CA2173068C - Uv curable ink for game ball and method of printing - Google Patents
Uv curable ink for game ball and method of printing Download PDFInfo
- Publication number
- CA2173068C CA2173068C CA002173068A CA2173068A CA2173068C CA 2173068 C CA2173068 C CA 2173068C CA 002173068 A CA002173068 A CA 002173068A CA 2173068 A CA2173068 A CA 2173068A CA 2173068 C CA2173068 C CA 2173068C
- Authority
- CA
- Canada
- Prior art keywords
- ink
- indicia
- game ball
- curable
- oligomer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000007639 printing Methods 0.000 title description 8
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 239000000049 pigment Substances 0.000 claims description 18
- 239000000178 monomer Substances 0.000 claims description 17
- 239000002904 solvent Substances 0.000 claims description 16
- 238000001723 curing Methods 0.000 claims description 14
- 238000010998 test method Methods 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 239000012749 thinning agent Substances 0.000 claims description 9
- 239000003086 colorant Substances 0.000 claims description 7
- 230000002860 competitive effect Effects 0.000 claims description 6
- 238000007649 pad printing Methods 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000003848 UV Light-Curing Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000000977 initiatory effect Effects 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims 5
- 238000009877 rendering Methods 0.000 claims 1
- 239000000976 ink Substances 0.000 description 120
- 238000012360 testing method Methods 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- FZUGPQWGEGAKET-UHFFFAOYSA-N parbenate Chemical compound CCOC(=O)C1=CC=C(N(C)C)C=C1 FZUGPQWGEGAKET-UHFFFAOYSA-N 0.000 description 7
- 239000000975 dye Substances 0.000 description 5
- -1 isocyanate compound Chemical class 0.000 description 5
- YIKSHDNOAYSSPX-UHFFFAOYSA-N 1-propan-2-ylthioxanthen-9-one Chemical compound S1C2=CC=CC=C2C(=O)C2=C1C=CC=C2C(C)C YIKSHDNOAYSSPX-UHFFFAOYSA-N 0.000 description 4
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 description 4
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000000080 wetting agent Substances 0.000 description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000001931 aliphatic group Chemical group 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 125000004386 diacrylate group Chemical group 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000008096 xylene Substances 0.000 description 3
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 description 1
- JHWGFJBTMHEZME-UHFFFAOYSA-N 4-prop-2-enoyloxybutyl prop-2-enoate Chemical compound C=CC(=O)OCCCCOC(=O)C=C JHWGFJBTMHEZME-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 108091092920 SmY RNA Proteins 0.000 description 1
- 241001237710 Smyrna Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- TUOBEAZXHLTYLF-UHFFFAOYSA-N [2-(hydroxymethyl)-2-(prop-2-enoyloxymethyl)butyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(CC)COC(=O)C=C TUOBEAZXHLTYLF-UHFFFAOYSA-N 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 229920006397 acrylic thermoplastic Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003849 aromatic solvent Substances 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N tetraethylene glycol Chemical compound OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/40—Printing on bodies of particular shapes, e.g. golf balls, candles, wine corks
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0022—Coatings, e.g. paint films; Markings
- A63B37/00221—Coatings, e.g. paint films; Markings characterised by the material
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B45/00—Apparatus or methods for manufacturing balls
- A63B45/02—Marking of balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/16—Surface shaping of articles, e.g. embossing; Apparatus therefor by wave energy or particle radiation, e.g. infrared heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/007—Characteristics of the ball as a whole
- A63B37/0072—Characteristics of the ball as a whole with a specified number of layers
- A63B37/0075—Three piece balls, i.e. cover, intermediate layer and core
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/12—Special coverings, i.e. outer layer material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2795/00—Printing on articles made from plastics or substances in a plastic state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0085—Copolymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/54—Balls
- B29L2031/545—Football balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5209—Coatings prepared by radiation-curing, e.g. using photopolymerisable compositions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0027—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers by lamination or by fusion of the coatings or layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
- Y10T428/24736—Ornamental design or indicia
Abstract
Disclosed herein is a game ball, such as a golf ball, having an indicia formed from a UV curable ink. An ink composition and a method for applying an indicia to a game ball also are disclosed. The UV
curable ink has excellent pad transfer properties and durability.
curable ink has excellent pad transfer properties and durability.
Description
21 ~~a~~8 UV Curable Ink for Game Ball and Method of Printing Background of the Invention The present invention generally relates to inks, and more particularly to UV curable inks.
UV curable inks are quick-curing inks and therefore are advantageous for use in continuous-type processes in which subsequent treatment of an ink-printed substrate is involved. A number of UV curable inks are known. For example, U.S. Patent No. 4,271,258 discloses a photopolymerizable ink composition containing acrylate resin, methacrylate monomer or oligomer, acrylate monomer or oligomer, photoinitiator, and a particular type of an epoxy resin. U.S.
Patent No. 5,391,685 discloses a UV curable ink having an isocyanate compound added thereto. U.S. Patent No. 5,391,685 contends that the ink disclosed therein is particularly well suited for printing on slightly adhesive plastic bases, such as those made of polyoxymethylenes and polypropylenes.
Screen printing on spherical surfaces such as golf balls can be difficult. As a result, pad printing customarily is used for marking golf ball surfaces. However, many of the known UV curable inks are not well suited for pad printing due to difficulties in transferring the ink from a pad to a substrate. Furthermore, UV curable inks that can be pad printed have not been found suitable for use on golf balls. More specifically, when applied to a golf ball, these inks are not sufficiently durable (impact resistant) to withstand multiple blows by a golf club.
!t would be useful to obtain a highly durable UV curable ink which has favorable pad transfer properties when used for printing indicia on surfaces such as a curved and dimpled surface of a golf ball, and which provides an image having good durability.
2I 73(~~8 Summary of the Invention An object of the invention is to provide a new and improved UV
curable ink.
Another object of the invention is to provide a UV curable ink which is particularly well suited for application by pad transfer.
A further object of the invention is to provide a quick curing ink for use on a game ball, such as golf ball, thereby enabling more rapid production.
Another object of the invention is to provide a pad printable, UV
curable ink having good impact resistance.
Yet another object of the invention is to provide a game ball, such as a golf ball, having a clear and durable ink image printed thereon.
A further object of the invention is to provide a method for printing an indicia on a game ball, the indicia comprising a UV curable ink.
Yet another object of the invention is to provide a method for applying a smudge resistant and durable indicia to a visible surface of a game ball.
Other objects of the invention will be in part obvious and in part painted out more in detail hereafter.
The invention in a preferred form is a game ball with a surface and an indicia comprising a UV curable ink adhered to the surface. The impact resistance of the ink and the adhesion between the indicia and the surface are sufficient to render the ball suitable for use in competitive play.
The indicia can be applied directly to the cover of a 1-piece, or two-piece or multi-piece game ball. Alternatively, one or more primer coats can be positioned between the game ball cover and indicia.
Furthermore, one or more top coats are positioned over the indicia. The indicia is sufficiently durable that after the game ball is subjected to the 2 ~ ~~0;68 wet barrel durability test procedure, at least about 50%, preferably at least about 70%, and more preferably at least about 80% of the surface area of the original image remains on the game ball.
Another preferred form of the invention is a UV curable ink. The ink comprises a UV curable resin, a coloring agent, such as a pigment or dye, and a photoinitiator for initiating polymerization of the UV
curable resin. The ink has a sward hardness (ASTM D 2134-66) of no more than about 40 after curing is complete and has adhesive properties and impact resistance sufficient to render it suitable for use on a game ball to be used in competitive play. A thinning agent which includes a monomer andlor solvent also is preferably included. A
wetting agent and/or extender pigment also can be added. To facilitate pad transfer, the ink has a viscosity of 1 ,000 - 28,000 centipoise, preferably 4,000 - 28,000 centipoise, and more preferably 6,000 -28,000 centipoise at the time of application.
Yet another preferred form of the invention is a method of applying an indicia to a game ball. The method comprises the steps of (a) obtaining a UV curable ink containing a coloring agent, such as a pigment or dye, a photoinitiator, and a UV-curable resin, the ink having a viscosity of 1,000 - 28,000 and preferably 4,000 - 27,000 centipoise, (b) applying the ink to the game ball in the form of the indicia, (c) curing the ink to form a cured film having a sward hardness (ASTM D
2134-66) of no more than about 40, and (d) applying a coating over the ink. The indicia has an impact resistance sufficient to render the game ball suitable for use in competitive play. The ink preferably is applied by pad printing. The step of UV curing preferably includes placing the indicia under a UV lamp at conditions of lamp intensity, lamp distance and time sufficient to commence curing of the ink. Curing preferably is substantially complete within about 1 second.
The invention accordingly comprises the several steps and the relation of one or more of such steps with respect to each of the others and the article possessing the features, properties, and the relation of elements exemplified in the following detailed disclosure.
Brief Description of the Drawing The Figure shows a game ball having an indicia comprising a UV
curable ink in accordance with the present invention.
Detailed Description of the Invention The UV curable ink of the present invention is unique in that it exhibits a combination of favorable transfer properties and good durability or impact resistance. The ink can be used for printing indicia on golf balls, softballs, baseballs and other game balls, particularly on ionomeric resins. The ink also can be used on polybutadiene, synthetic leathers based on polyurethane or polyvinyl chloride, and other game ball cover materials.
As indicated above, the ink comprises a UV curable resin, a coloring agent, such as a pigment or dye, and a photoinitiator. A
thinning agent which includes a monomer and/or a solvent can be added. If necessary, a wetting agent also can be included.
The UV curable resin preferably comprises an oligomer. Non-limiting examples of the oligomer include one or more epoxies, acrylics, acrylated urethanes, elastomeric acrylates, unsaturated polyesters, and polyethers. Specific examples of suitable oligomers include methacrylates such as bisphenoi A ethoxylate dimethacrylate and acrylated epoxies. Blends of different oligomers can be used. The oligomer must provide the ink with characteristics of flexibility and impact resistance that are sufficient to withstand the conditions to which the substrate is to be subjected. For example, if the substrate is a golf ball, the oligomer must impart to the ink more flexibility than is inherent in the underlying substrate. When a top coat is to be placed 217~0~~
over the ink, the ink should not be so highly cross-linked that adhesion of the top coat to the ink is substantially hindered.
The ink preferably comprises about 10 - 90 wt % oligomer, more preferably about 20 - 80 wt % oligomer, and most preferably about 50 -5 70 wt % oligomer.
The coloring agent can be any type of pigment, dye or the like which will withstand UV treatment, i.e., which is not UV labile.
Furthermore, the coloring agent should permit sufficient passage of UV
light through the ink, by any combination of transmission, reflection, or refraction mechanisms, to initiate photocrosslinking. Liquids or powders can be used. One preferred form of the ink is a powder which is dispersed in liquid monomer. Carbon black and iron oxide black are non-limiting examples of suitable pigments for making black inks.
Blends of different pigments and/or dyes can be used. The ink preferably contains about 2 - 60 wt% pigment, more preferably about 5 - 30 wt % pigment, and most preferably about 5 - 10 wt % pigment.
The photoinitiator is selected to respond to the wavelength of UV
radiation to be used for photoinitiation_ It is also important to consider the color of the ink in selecting the photoinitiator because, as indicated above, it is necessary for the UV light to penetrate in the ink composition to initiate the cure. More specifically, penetration is required in order to cure the portion of the ink which is beneath the surface. Penetration typically is most difficult when black or white pigments are used. Non-limiting examples of photoinitiators to be used in conjunction with black pigment include sulfur-type photoinitiators such as isopropyl thioxanthone, and benzophenone and its derivatives including acetophenone types and thioxanthones. Photoactivators can be used in conjunction with one or more photoinitiators. Non-limiting examples of suitable photoactivators are amine-type photoactivators such as ethyl 4-dimethylamino benzoate. The ink preferably contains about 0.3 - 5 wt % photoinitiator, more preferably about 1 - 4 wt ~~o.~s photoinitiator, and most preferably about 3 - 4 wt% photoinitiator.
Blends of different photoinitiators, or photoinitiators and photoactivators, can be used.
A thinning agent is added if it is needed to lower the viscosity of the uncured ink composition or to contribute to impact resistance or flexibility_ When monomer is used as a thinning agent, it should be a photopolymerizable monomer which forms a polymeric structure upon irradiation. In contrast, when solvents are used as thinning agents, they evaporate during curing. The monomer can be a monofunctional, difunctional or multifunctional acrylate. Non-limiting examples of suitable monomers include 1,6 hexane dioldiacrylate, butane dioldiacrylate, trimethylol propane diacrylate, tripropylene glycol diacrylate arid tetraethylene glycol diacry(ate.
The ink preferably contains about 10 - 70 wt % monomer, more 1 5 preferably about 10 - 60 wt % monomer, and most preferably about 10 - 55 wt % monomer. Preferably, the combination of monomer plus oligomer constitutes about 45 - 80 wt % of the ink, more preferably about 50 - 80 wt %, and most preferably about 60 - 80 wt % of the ink.
When a solvent is used, it typically is a liquid with a fast to moderate evaporation rate which, upon partial evaporation causes the ink to be tacky, and thereby promotes transfer onto and off an ink pad.
Solvent also can be the medium in which photoinitiator is dissolved.
Non limiting examples of suitable solvents include aromatic solvents 2 5 such as toluene ~ xylene ~ ester types such as butyl acetate The ink preferably includes about 1 - 30 wt % solvent, more preferably about 5 - 20 wt % solvent, and most preferably about 8 - 10 wt % solvent.
Wetting agents can be added if necessary to prevent beading of the ink upon application to the golf ball. Suitable wetting agents include, but are not limited to, silicon surfactants and fluorocarbon surfactants. The ink preferably includes about 0 - 2 wt % wetting 21 ~,~Q68 agent. Other additives that do not adversely affect the pad transfer and impact resistance of the ink also can be incorporated into the ink composition.
Extender pigments such as talc, barium sulfate and the like can be added as long as sufficient durability is maintained. Such materials may be used to improve transferability. Typically, if such materials are used, they constitute about 10 - 40 wt%, or more preferably 20 - 30 wt %, of the ink formulation.
The surface tension of the ink affects pad transfer. The surface tension of the ink should not be substantially higher than the surface tension of the substrate upon which it is printed. The viscosity of the ink will determine the thickness of the indicia on the cover. if the indicia is too thick, the UV radiation will not penetrate the indicia and complete curing may become difficult. On the other hand, if the indicia is too thin, the durability of the ink layer may be insufficient for conditions of play. The indicia has a thickness of less than 100 microns, preferably about 10 - 40 microns, more preferably 13 - 30 microns, and most preferably 20 - 25 microns.
The cured ink should be sufficiently flexible that it exhibits good impact resistance. it is advantageous for the top coat which is applied over the ink to react with the ink to hold the ink in place, or to have adhesion by hydrogen bonding and/or Van Der Waals forces. As a non limiting example, the ink can be used in conjunction with a two component polyurethane top coat, such as a top coat based on polyester or acrylic polyols and aliphatic isocyanates such as hexamethylene diisocyanate or isophorane diisocyanate trimers.
It is essential for a top coat to be applied over the indicia to protect the indicia unless the indicia has sufficient adhesion to the surface to which it is applied. e.g., the cover or a primer layer, to render the use of a top coat unnecessary. The adhesion between the ink and the top coat and/or substrate should be sufficiently strong that the SPALDl140lUS -- P-4277 ~ ~ ~~o.~s indicia remains substantially intact when the game ball is used.
Standards for image retention vary depending upon the intended use of the game ball and the degree and frequency of impact that the image is required to withstand. When applied to a golf ball, the ink durability should be sufficient in order that after the ball is subjected to the wet barrel durability test procedure described below, at least 50% of the surface area of the original image remains, more preferably at least 70%, and most preferably at least 80%.
A formulation of UV curable ink of the invention which is for golf ball printing is prepared and used in the following way. The photoinitiator is dissolved in the thinning agent, which is then mixed with oligomer and pigment. The mixture is placed in an open or closed cup dispenser of a pad printing device. A primed but unfinished golf ball such as that shown in the Figure, which is designated as 8, is 7 5 obtained. The ball 8 includes, for example, a core 10, and a durable cover layer 12 having a dimpled surface. Alternatively, the core and cover can be formed in one piece. An indicia 14 is pad printed over the golf ball cover 12. The ink indicia can either be stamped directly on tt~e cover or can be stamped on a primer which is placed over the cover.
The unfinished golf ball 8 is then subjected to UV treatment under conditions sufficient to commence curing of the ink. After photoinitiation, curing of the ink is substantially complete withiri a time period of between less than one second and a few seconds.
A top coat layer i 6 is placed over the ink indicia after the ink is cured. The top coat layer 16 assists in keeping the indicia on the golf ball surface, as indicated above, and therefore the adhesion of indicia to the golf ball does not need to be as strong as would be required if the ink were to constitute the outer layer of the ball. The top coat typically has a thickness of 10 - 40 microns.
The conditions of UV exposure which are appropriate to cure the ink can be ascertained by one having ordinary skill in the art. For 17.306$
UV curable inks are quick-curing inks and therefore are advantageous for use in continuous-type processes in which subsequent treatment of an ink-printed substrate is involved. A number of UV curable inks are known. For example, U.S. Patent No. 4,271,258 discloses a photopolymerizable ink composition containing acrylate resin, methacrylate monomer or oligomer, acrylate monomer or oligomer, photoinitiator, and a particular type of an epoxy resin. U.S.
Patent No. 5,391,685 discloses a UV curable ink having an isocyanate compound added thereto. U.S. Patent No. 5,391,685 contends that the ink disclosed therein is particularly well suited for printing on slightly adhesive plastic bases, such as those made of polyoxymethylenes and polypropylenes.
Screen printing on spherical surfaces such as golf balls can be difficult. As a result, pad printing customarily is used for marking golf ball surfaces. However, many of the known UV curable inks are not well suited for pad printing due to difficulties in transferring the ink from a pad to a substrate. Furthermore, UV curable inks that can be pad printed have not been found suitable for use on golf balls. More specifically, when applied to a golf ball, these inks are not sufficiently durable (impact resistant) to withstand multiple blows by a golf club.
!t would be useful to obtain a highly durable UV curable ink which has favorable pad transfer properties when used for printing indicia on surfaces such as a curved and dimpled surface of a golf ball, and which provides an image having good durability.
2I 73(~~8 Summary of the Invention An object of the invention is to provide a new and improved UV
curable ink.
Another object of the invention is to provide a UV curable ink which is particularly well suited for application by pad transfer.
A further object of the invention is to provide a quick curing ink for use on a game ball, such as golf ball, thereby enabling more rapid production.
Another object of the invention is to provide a pad printable, UV
curable ink having good impact resistance.
Yet another object of the invention is to provide a game ball, such as a golf ball, having a clear and durable ink image printed thereon.
A further object of the invention is to provide a method for printing an indicia on a game ball, the indicia comprising a UV curable ink.
Yet another object of the invention is to provide a method for applying a smudge resistant and durable indicia to a visible surface of a game ball.
Other objects of the invention will be in part obvious and in part painted out more in detail hereafter.
The invention in a preferred form is a game ball with a surface and an indicia comprising a UV curable ink adhered to the surface. The impact resistance of the ink and the adhesion between the indicia and the surface are sufficient to render the ball suitable for use in competitive play.
The indicia can be applied directly to the cover of a 1-piece, or two-piece or multi-piece game ball. Alternatively, one or more primer coats can be positioned between the game ball cover and indicia.
Furthermore, one or more top coats are positioned over the indicia. The indicia is sufficiently durable that after the game ball is subjected to the 2 ~ ~~0;68 wet barrel durability test procedure, at least about 50%, preferably at least about 70%, and more preferably at least about 80% of the surface area of the original image remains on the game ball.
Another preferred form of the invention is a UV curable ink. The ink comprises a UV curable resin, a coloring agent, such as a pigment or dye, and a photoinitiator for initiating polymerization of the UV
curable resin. The ink has a sward hardness (ASTM D 2134-66) of no more than about 40 after curing is complete and has adhesive properties and impact resistance sufficient to render it suitable for use on a game ball to be used in competitive play. A thinning agent which includes a monomer andlor solvent also is preferably included. A
wetting agent and/or extender pigment also can be added. To facilitate pad transfer, the ink has a viscosity of 1 ,000 - 28,000 centipoise, preferably 4,000 - 28,000 centipoise, and more preferably 6,000 -28,000 centipoise at the time of application.
Yet another preferred form of the invention is a method of applying an indicia to a game ball. The method comprises the steps of (a) obtaining a UV curable ink containing a coloring agent, such as a pigment or dye, a photoinitiator, and a UV-curable resin, the ink having a viscosity of 1,000 - 28,000 and preferably 4,000 - 27,000 centipoise, (b) applying the ink to the game ball in the form of the indicia, (c) curing the ink to form a cured film having a sward hardness (ASTM D
2134-66) of no more than about 40, and (d) applying a coating over the ink. The indicia has an impact resistance sufficient to render the game ball suitable for use in competitive play. The ink preferably is applied by pad printing. The step of UV curing preferably includes placing the indicia under a UV lamp at conditions of lamp intensity, lamp distance and time sufficient to commence curing of the ink. Curing preferably is substantially complete within about 1 second.
The invention accordingly comprises the several steps and the relation of one or more of such steps with respect to each of the others and the article possessing the features, properties, and the relation of elements exemplified in the following detailed disclosure.
Brief Description of the Drawing The Figure shows a game ball having an indicia comprising a UV
curable ink in accordance with the present invention.
Detailed Description of the Invention The UV curable ink of the present invention is unique in that it exhibits a combination of favorable transfer properties and good durability or impact resistance. The ink can be used for printing indicia on golf balls, softballs, baseballs and other game balls, particularly on ionomeric resins. The ink also can be used on polybutadiene, synthetic leathers based on polyurethane or polyvinyl chloride, and other game ball cover materials.
As indicated above, the ink comprises a UV curable resin, a coloring agent, such as a pigment or dye, and a photoinitiator. A
thinning agent which includes a monomer and/or a solvent can be added. If necessary, a wetting agent also can be included.
The UV curable resin preferably comprises an oligomer. Non-limiting examples of the oligomer include one or more epoxies, acrylics, acrylated urethanes, elastomeric acrylates, unsaturated polyesters, and polyethers. Specific examples of suitable oligomers include methacrylates such as bisphenoi A ethoxylate dimethacrylate and acrylated epoxies. Blends of different oligomers can be used. The oligomer must provide the ink with characteristics of flexibility and impact resistance that are sufficient to withstand the conditions to which the substrate is to be subjected. For example, if the substrate is a golf ball, the oligomer must impart to the ink more flexibility than is inherent in the underlying substrate. When a top coat is to be placed 217~0~~
over the ink, the ink should not be so highly cross-linked that adhesion of the top coat to the ink is substantially hindered.
The ink preferably comprises about 10 - 90 wt % oligomer, more preferably about 20 - 80 wt % oligomer, and most preferably about 50 -5 70 wt % oligomer.
The coloring agent can be any type of pigment, dye or the like which will withstand UV treatment, i.e., which is not UV labile.
Furthermore, the coloring agent should permit sufficient passage of UV
light through the ink, by any combination of transmission, reflection, or refraction mechanisms, to initiate photocrosslinking. Liquids or powders can be used. One preferred form of the ink is a powder which is dispersed in liquid monomer. Carbon black and iron oxide black are non-limiting examples of suitable pigments for making black inks.
Blends of different pigments and/or dyes can be used. The ink preferably contains about 2 - 60 wt% pigment, more preferably about 5 - 30 wt % pigment, and most preferably about 5 - 10 wt % pigment.
The photoinitiator is selected to respond to the wavelength of UV
radiation to be used for photoinitiation_ It is also important to consider the color of the ink in selecting the photoinitiator because, as indicated above, it is necessary for the UV light to penetrate in the ink composition to initiate the cure. More specifically, penetration is required in order to cure the portion of the ink which is beneath the surface. Penetration typically is most difficult when black or white pigments are used. Non-limiting examples of photoinitiators to be used in conjunction with black pigment include sulfur-type photoinitiators such as isopropyl thioxanthone, and benzophenone and its derivatives including acetophenone types and thioxanthones. Photoactivators can be used in conjunction with one or more photoinitiators. Non-limiting examples of suitable photoactivators are amine-type photoactivators such as ethyl 4-dimethylamino benzoate. The ink preferably contains about 0.3 - 5 wt % photoinitiator, more preferably about 1 - 4 wt ~~o.~s photoinitiator, and most preferably about 3 - 4 wt% photoinitiator.
Blends of different photoinitiators, or photoinitiators and photoactivators, can be used.
A thinning agent is added if it is needed to lower the viscosity of the uncured ink composition or to contribute to impact resistance or flexibility_ When monomer is used as a thinning agent, it should be a photopolymerizable monomer which forms a polymeric structure upon irradiation. In contrast, when solvents are used as thinning agents, they evaporate during curing. The monomer can be a monofunctional, difunctional or multifunctional acrylate. Non-limiting examples of suitable monomers include 1,6 hexane dioldiacrylate, butane dioldiacrylate, trimethylol propane diacrylate, tripropylene glycol diacrylate arid tetraethylene glycol diacry(ate.
The ink preferably contains about 10 - 70 wt % monomer, more 1 5 preferably about 10 - 60 wt % monomer, and most preferably about 10 - 55 wt % monomer. Preferably, the combination of monomer plus oligomer constitutes about 45 - 80 wt % of the ink, more preferably about 50 - 80 wt %, and most preferably about 60 - 80 wt % of the ink.
When a solvent is used, it typically is a liquid with a fast to moderate evaporation rate which, upon partial evaporation causes the ink to be tacky, and thereby promotes transfer onto and off an ink pad.
Solvent also can be the medium in which photoinitiator is dissolved.
Non limiting examples of suitable solvents include aromatic solvents 2 5 such as toluene ~ xylene ~ ester types such as butyl acetate The ink preferably includes about 1 - 30 wt % solvent, more preferably about 5 - 20 wt % solvent, and most preferably about 8 - 10 wt % solvent.
Wetting agents can be added if necessary to prevent beading of the ink upon application to the golf ball. Suitable wetting agents include, but are not limited to, silicon surfactants and fluorocarbon surfactants. The ink preferably includes about 0 - 2 wt % wetting 21 ~,~Q68 agent. Other additives that do not adversely affect the pad transfer and impact resistance of the ink also can be incorporated into the ink composition.
Extender pigments such as talc, barium sulfate and the like can be added as long as sufficient durability is maintained. Such materials may be used to improve transferability. Typically, if such materials are used, they constitute about 10 - 40 wt%, or more preferably 20 - 30 wt %, of the ink formulation.
The surface tension of the ink affects pad transfer. The surface tension of the ink should not be substantially higher than the surface tension of the substrate upon which it is printed. The viscosity of the ink will determine the thickness of the indicia on the cover. if the indicia is too thick, the UV radiation will not penetrate the indicia and complete curing may become difficult. On the other hand, if the indicia is too thin, the durability of the ink layer may be insufficient for conditions of play. The indicia has a thickness of less than 100 microns, preferably about 10 - 40 microns, more preferably 13 - 30 microns, and most preferably 20 - 25 microns.
The cured ink should be sufficiently flexible that it exhibits good impact resistance. it is advantageous for the top coat which is applied over the ink to react with the ink to hold the ink in place, or to have adhesion by hydrogen bonding and/or Van Der Waals forces. As a non limiting example, the ink can be used in conjunction with a two component polyurethane top coat, such as a top coat based on polyester or acrylic polyols and aliphatic isocyanates such as hexamethylene diisocyanate or isophorane diisocyanate trimers.
It is essential for a top coat to be applied over the indicia to protect the indicia unless the indicia has sufficient adhesion to the surface to which it is applied. e.g., the cover or a primer layer, to render the use of a top coat unnecessary. The adhesion between the ink and the top coat and/or substrate should be sufficiently strong that the SPALDl140lUS -- P-4277 ~ ~ ~~o.~s indicia remains substantially intact when the game ball is used.
Standards for image retention vary depending upon the intended use of the game ball and the degree and frequency of impact that the image is required to withstand. When applied to a golf ball, the ink durability should be sufficient in order that after the ball is subjected to the wet barrel durability test procedure described below, at least 50% of the surface area of the original image remains, more preferably at least 70%, and most preferably at least 80%.
A formulation of UV curable ink of the invention which is for golf ball printing is prepared and used in the following way. The photoinitiator is dissolved in the thinning agent, which is then mixed with oligomer and pigment. The mixture is placed in an open or closed cup dispenser of a pad printing device. A primed but unfinished golf ball such as that shown in the Figure, which is designated as 8, is 7 5 obtained. The ball 8 includes, for example, a core 10, and a durable cover layer 12 having a dimpled surface. Alternatively, the core and cover can be formed in one piece. An indicia 14 is pad printed over the golf ball cover 12. The ink indicia can either be stamped directly on tt~e cover or can be stamped on a primer which is placed over the cover.
The unfinished golf ball 8 is then subjected to UV treatment under conditions sufficient to commence curing of the ink. After photoinitiation, curing of the ink is substantially complete withiri a time period of between less than one second and a few seconds.
A top coat layer i 6 is placed over the ink indicia after the ink is cured. The top coat layer 16 assists in keeping the indicia on the golf ball surface, as indicated above, and therefore the adhesion of indicia to the golf ball does not need to be as strong as would be required if the ink were to constitute the outer layer of the ball. The top coat typically has a thickness of 10 - 40 microns.
The conditions of UV exposure which are appropriate to cure the ink can be ascertained by one having ordinary skill in the art. For 17.306$
example, it has been found that when a golf ball passes through a UV
treatment apparatus at a rate of 10 ft/min. at a distance of about 1'/<
3~4 inches from a UV light source which has an intensity of e.g. 200 -300 watts/in2, the indicia should be exposed to UV radiation for no more than a few seconds, preferably, no more than about 1 second, and more preferably no more than about 0.7 seconds. Higher and lower UV lamp intensities may be used as long as the cured ink meets the applicable durability requirements. Excess UV exposure is avoided in order to prevent degradation of the substrate. The ink is UV cured prior to application of any top coat.
The pad to be used for transfer of the UV ink preferably contains silicone. This type of pad has good elasticity, durability and softness and an appropriate surface tension. Other types of pads also can be used.
The ink can be applied on a non-UV-labile surface of a game ball.
According to the invention, it is generally not necessary to pretreat the surface prior to application of the ink. If it is desired to apply the UV
curable ink on an extremely smooth surface upon which transfer is poor, the portion of the surface to be stamped can be chemically or physically etched or abraded in order to provide an ink-receptive surface.
The ink of the invention has a sward hardness after curing of no more than 40, more preferably no more than 20, and most preferably no more than about 14. The UV curable ink of the invention provides for durability sufficient to meet stringent durability standards required for commercial grade golf balls. The durability of the ink can be determined by testing stamped golf balls in a variety of ways, including using the wet barrel durability test procedure.
The wet barrel durability test is performed by first soaking (immersing) the test golf balls in water for at least 3 hours. Thereafter each ball is fired 100 times at a velocity of 134 ft/sec at 72°F into a five-sided container, the walls of which are steel plates that have had grooves milled therein to simulate the grooves present on a golf club face. The balls are then examined for adhesion of the ink.
Having generally described the invention, the following examples 5 are included for purposes of illustration so that the invention may be more readily understood and are in no way intended to limit the scope of the invention unless otherwise specifically indicated.
A golf ball printing ink was prepared which contains:
treatment apparatus at a rate of 10 ft/min. at a distance of about 1'/<
3~4 inches from a UV light source which has an intensity of e.g. 200 -300 watts/in2, the indicia should be exposed to UV radiation for no more than a few seconds, preferably, no more than about 1 second, and more preferably no more than about 0.7 seconds. Higher and lower UV lamp intensities may be used as long as the cured ink meets the applicable durability requirements. Excess UV exposure is avoided in order to prevent degradation of the substrate. The ink is UV cured prior to application of any top coat.
The pad to be used for transfer of the UV ink preferably contains silicone. This type of pad has good elasticity, durability and softness and an appropriate surface tension. Other types of pads also can be used.
The ink can be applied on a non-UV-labile surface of a game ball.
According to the invention, it is generally not necessary to pretreat the surface prior to application of the ink. If it is desired to apply the UV
curable ink on an extremely smooth surface upon which transfer is poor, the portion of the surface to be stamped can be chemically or physically etched or abraded in order to provide an ink-receptive surface.
The ink of the invention has a sward hardness after curing of no more than 40, more preferably no more than 20, and most preferably no more than about 14. The UV curable ink of the invention provides for durability sufficient to meet stringent durability standards required for commercial grade golf balls. The durability of the ink can be determined by testing stamped golf balls in a variety of ways, including using the wet barrel durability test procedure.
The wet barrel durability test is performed by first soaking (immersing) the test golf balls in water for at least 3 hours. Thereafter each ball is fired 100 times at a velocity of 134 ft/sec at 72°F into a five-sided container, the walls of which are steel plates that have had grooves milled therein to simulate the grooves present on a golf club face. The balls are then examined for adhesion of the ink.
Having generally described the invention, the following examples 5 are included for purposes of illustration so that the invention may be more readily understood and are in no way intended to limit the scope of the invention unless otherwise specifically indicated.
A golf ball printing ink was prepared which contains:
10 5 parts by weight 1,6 hexane dioldiacrylate (sold by Sartomer, Exton, PA 19341 ), 17.5 parts by weight black pigment paste in diacrylate monomer, sold as Carbon Black UV Dispersion 998415 (Penn Color, Doylestown, PA), 35 parts by weight of an aliphatic urethane acrylate oligomer (CN965, sold by Sartomer, Exton, PA 19341 ).
0.5 parts by weight isopropyl thioxanthone, C,6H,40S, a sulfur-type photoinitiator (ITX, distributed by Aceto Chemical, Lake Success, NY), 1 part by weight ethyl 4-dimethylamino benzoate, C"H,SNOz, an amine-type photoactivator (EDB, distributed by Aceto Chemical, Lake Success, NY), 4.4 parts by weight xylene solvent, and 4.4 parts by butyl acetate solvent.
The photoinitiator and photoactivator were dissolved in the xylene/butyl acetate solvent blend. The ink was pad printed using a silicone pad on unprimed, dimpled ionomeric covers of several dozen golf balls. The ink had a viscosity of about 27,500 (centipoise) cps at the time of application. The balls containing the stamped indicia were passed through a Uvex UV treatment apparatus Lab Model #14201 at a rate of *Trade-mark feet/min, using a lamp intensity of 235 watt/in2 and wavelength range of 200 - 400 nm with the indicia being located about 1 3/4 inches from the UV light source. The ink was cured in less than about 1 second and had a sward hardness of about 14 after curing was 5 complete. The golf balls were then coated with a solvent borne polyurethane top coat formed from a polyester type hexamethylene diisocyanate. The adhesion of the indicia on the balls was tested for durability according to the wet barrel durability test procedure described above. After wet barrel durability testing, the balls were examined and 10 it was found that no more than about 20% of the surface area of the original ink logo was removed.
The procedure of Example 1 was repeated with the exception that the ink formulation that was used contained:
1 5 10 parts by weight 1 ,6 hexane dioldiacrylate (sold by Sartomer), 35 parts by weight black pigment paste in diacrylate monomer, sold as Carbon Black UV Dispersion 998415, 70 parts by weight of a difunctional aliphatic urethane acrylate oligomer (Ebecryl 4833 RadCure, Smyrna, GA), 1 part by weight isopropyl thioxanthone, C,6H,40S (ITX), and 2 parts by weight ethyl 4-dimethylamino benzoate (EDB).
The ink had a viscosity of about 25,000 cps. The ink was cured in about 1 second and produced a film having a sward hardness of about 12. The balls were subjected to the wet barrel durability test procedure. After the wet barrel durability testing, it was found that no more than about 20% of the ink logo was removed.
*Trade-mark :i '=
The procedure of Example 1 was repeated with the exception that the CN965 oligomer was replaced by a difunctional oligomer sold as Ebecryl 8402 (Rad-Cure, Smyrna, GA). The ink had a viscosity of about 18,000 cps. The ink was cured in about 1 second and produced a film having a sward hardness of about 14. The ink was found to be as nearly as durable as that of Examples 1 and 2.
The procedure of Example 1 was repeated with the exception that the ink formulation that was used contained:
7.3 parts by weight 1,6 hexane dioldiacrylate (sold by Sartomer, Exton, PA 19341 ), 19.2 parts by weight black pigment paste in diacrylate monomer, sold as ICU 366 BLK (Industrial Color Ink, Joliette, IL), 1 5 21 .0 parts by weight aliphatic polyether urethane oligomer (BR-571, Bomar Specialties Company, Winsted, CT), 0.5 parts by weight isopropyl thioxanthone, C,6H,40S, a sulfur-type photoinitiator (ITX, distributed by Aceto Chemical, Lake Success, NY), 1 part by weight ethyl 4-dimethylamino benzoate (EDB), 1 1.4 parts by weight talc (Vantalc 6H, Vanderbilt, Norwalk, CT), 22.9 parts by weight barium sulfate (106 Low-Micron White Barytles, Whittaker, Clark & Daniels, Inc., South Plainfield, NJ), 12.1 parts by weigh butyl acetate solvent, and 4.6 parts by weight propylene glycol monomethyl ether acetate solvent.
The ink was applied directly to ionomeric covers of golf balls, and also over ionomeric covers to which a water borne polyurethane primer layer had been applied prior to application of the ink. The ink was cured in about 1 second and produced a film having a sward hardness of *Trade-mark A
0.5 parts by weight isopropyl thioxanthone, C,6H,40S, a sulfur-type photoinitiator (ITX, distributed by Aceto Chemical, Lake Success, NY), 1 part by weight ethyl 4-dimethylamino benzoate, C"H,SNOz, an amine-type photoactivator (EDB, distributed by Aceto Chemical, Lake Success, NY), 4.4 parts by weight xylene solvent, and 4.4 parts by butyl acetate solvent.
The photoinitiator and photoactivator were dissolved in the xylene/butyl acetate solvent blend. The ink was pad printed using a silicone pad on unprimed, dimpled ionomeric covers of several dozen golf balls. The ink had a viscosity of about 27,500 (centipoise) cps at the time of application. The balls containing the stamped indicia were passed through a Uvex UV treatment apparatus Lab Model #14201 at a rate of *Trade-mark feet/min, using a lamp intensity of 235 watt/in2 and wavelength range of 200 - 400 nm with the indicia being located about 1 3/4 inches from the UV light source. The ink was cured in less than about 1 second and had a sward hardness of about 14 after curing was 5 complete. The golf balls were then coated with a solvent borne polyurethane top coat formed from a polyester type hexamethylene diisocyanate. The adhesion of the indicia on the balls was tested for durability according to the wet barrel durability test procedure described above. After wet barrel durability testing, the balls were examined and 10 it was found that no more than about 20% of the surface area of the original ink logo was removed.
The procedure of Example 1 was repeated with the exception that the ink formulation that was used contained:
1 5 10 parts by weight 1 ,6 hexane dioldiacrylate (sold by Sartomer), 35 parts by weight black pigment paste in diacrylate monomer, sold as Carbon Black UV Dispersion 998415, 70 parts by weight of a difunctional aliphatic urethane acrylate oligomer (Ebecryl 4833 RadCure, Smyrna, GA), 1 part by weight isopropyl thioxanthone, C,6H,40S (ITX), and 2 parts by weight ethyl 4-dimethylamino benzoate (EDB).
The ink had a viscosity of about 25,000 cps. The ink was cured in about 1 second and produced a film having a sward hardness of about 12. The balls were subjected to the wet barrel durability test procedure. After the wet barrel durability testing, it was found that no more than about 20% of the ink logo was removed.
*Trade-mark :i '=
The procedure of Example 1 was repeated with the exception that the CN965 oligomer was replaced by a difunctional oligomer sold as Ebecryl 8402 (Rad-Cure, Smyrna, GA). The ink had a viscosity of about 18,000 cps. The ink was cured in about 1 second and produced a film having a sward hardness of about 14. The ink was found to be as nearly as durable as that of Examples 1 and 2.
The procedure of Example 1 was repeated with the exception that the ink formulation that was used contained:
7.3 parts by weight 1,6 hexane dioldiacrylate (sold by Sartomer, Exton, PA 19341 ), 19.2 parts by weight black pigment paste in diacrylate monomer, sold as ICU 366 BLK (Industrial Color Ink, Joliette, IL), 1 5 21 .0 parts by weight aliphatic polyether urethane oligomer (BR-571, Bomar Specialties Company, Winsted, CT), 0.5 parts by weight isopropyl thioxanthone, C,6H,40S, a sulfur-type photoinitiator (ITX, distributed by Aceto Chemical, Lake Success, NY), 1 part by weight ethyl 4-dimethylamino benzoate (EDB), 1 1.4 parts by weight talc (Vantalc 6H, Vanderbilt, Norwalk, CT), 22.9 parts by weight barium sulfate (106 Low-Micron White Barytles, Whittaker, Clark & Daniels, Inc., South Plainfield, NJ), 12.1 parts by weigh butyl acetate solvent, and 4.6 parts by weight propylene glycol monomethyl ether acetate solvent.
The ink was applied directly to ionomeric covers of golf balls, and also over ionomeric covers to which a water borne polyurethane primer layer had been applied prior to application of the ink. The ink was cured in about 1 second and produced a film having a sward hardness of *Trade-mark A
13 ~ 17 3068 about 14. The balls were top coated and subjected to the wet barrel durability test procedure. After the wet durability testing, it was found that no more than about 20% of the ink logo was removed.
The procedure of Example 1 was repeated with the exception that a commercially available UV curable ink was used, namely Blk #1700801 (Traps Tech, Carol Stream, IL). The ink had a viscosity of about 6,000 cps. The ink was cured in about 1 second and produced a film having a sward hardness of about 26. After the wet barrel durability test only the outline of the logo remained. Most of the ink in the dimples and on the land areas had been removed. Intercoat adhesion between the ink 'and top coat was poor.
The procedure of Example 1 was repeated on several golf balls with the exception that a commercially available UV curable ink was used, namely L-526-163-B (Qure Tech, Seabrook, NH). The ink had a viscosity of about 28,500 cps. The ink was cured in about 1 second and produced a film having a sward hardness of about 20. As a result of the wet barrel durability test, the ink on at least about 60% of the surface area of the logo had been removed. It is believed that the ink was too brittle to withstand the conditions of the wet barrel durability test.
As will be apparent to persons skilled in the art, various modifications and adaptations of the structure above described will become readily apparent without departure from the spirit and scope of the invention, the scope of which is defined in the appended claims.
*Trade-mark
The procedure of Example 1 was repeated with the exception that a commercially available UV curable ink was used, namely Blk #1700801 (Traps Tech, Carol Stream, IL). The ink had a viscosity of about 6,000 cps. The ink was cured in about 1 second and produced a film having a sward hardness of about 26. After the wet barrel durability test only the outline of the logo remained. Most of the ink in the dimples and on the land areas had been removed. Intercoat adhesion between the ink 'and top coat was poor.
The procedure of Example 1 was repeated on several golf balls with the exception that a commercially available UV curable ink was used, namely L-526-163-B (Qure Tech, Seabrook, NH). The ink had a viscosity of about 28,500 cps. The ink was cured in about 1 second and produced a film having a sward hardness of about 20. As a result of the wet barrel durability test, the ink on at least about 60% of the surface area of the logo had been removed. It is believed that the ink was too brittle to withstand the conditions of the wet barrel durability test.
As will be apparent to persons skilled in the art, various modifications and adaptations of the structure above described will become readily apparent without departure from the spirit and scope of the invention, the scope of which is defined in the appended claims.
*Trade-mark
Claims (20)
1. A game ball having a surface and an indicia comprising a UV curable ink adhered to the surface, the UV curable ink being formed from a composition comprising a UV curable resin and a photoinitiator, the impact resistance of the ink UV cured and the adhesion between the indicia and the surface after UV curing being sufficient to render the ball suitable for use in competitive play.
2. A game ball according to claim 1, wherein the game ball is a golf ball.
3. A game ball according to claim 1, wherein the UV curable ink is a pad transferable ink.
4. A game ball according to claim 1, wherein the surface to which the indicia is adhered comprises a top coat.
5. A game ball according to claim 3, wherein the top coat is formed over the indicia.
6. A game ball according to claim 2, wherein after being subjected to the wet barrel durability test procedure, the ink on at least about 50% of the surface area of the indicia has been retained.
7. A game ball according to claim 2, wherein after being subjected to a wet barrel durability test procedure, the ink on at least about 70%
of the surface area of the indicia has been retained.
of the surface area of the indicia has been retained.
8. A game ball according to claim 1, wherein after being subjected to a wet barrel durability test procedure, the ink on at least about 80%
of the surface area of the indicia has been retained.
of the surface area of the indicia has been retained.
9. A game ball according to claim 2, wherein after being subjected to a wet barrel durability test procedure, the ink on at least about 80% of the surface area of the indicia has been retained.
10. A UV curable ink composition, comprising:
a UV curable oligomer, a coloring agent, and a photoinitiator for initiating polymerization of the oligomer, the ink having a viscosity of about 1,000 - 28,000 cps and a sward hardness (ASTM D 2134-66) of no more than about 40 after curing, the adhesive properties and impact resistance of the ink rendering the ink suitable for use on a golf ball to be used in competitive play.
a UV curable oligomer, a coloring agent, and a photoinitiator for initiating polymerization of the oligomer, the ink having a viscosity of about 1,000 - 28,000 cps and a sward hardness (ASTM D 2134-66) of no more than about 40 after curing, the adhesive properties and impact resistance of the ink rendering the ink suitable for use on a golf ball to be used in competitive play.
11. A UV curable ink according to claim 10, further comprising a thinning agent.
12. A UV curable ink according to claim 11, wherein the thinning agent includes at least one member selected from the group consisting of a monomer and a solvent.
13. A UV curable ink according to claim 10, wherein the UV curable resin comprises 10 - 90 wt % oligomer.
14. A UV curable ink according to claim 10, wherein the ink has a viscosity of about 2,000 - 28,000 centipoise.
15. A UV curable ink according to claim 10, wherein the ink contains 2 - 60 wt % coloring agent and 1 - 5 wt % photoinitiator.
16 16. A method of applying an indicia to a game ball according to Claim 1, comprising the steps of:
a. obtaining an ink containing a pigment, a photoinitiator, and a UV-curable resin, b. applying the ink in the form of the indicia by pad printing, c. curing the ink to form a cured film having a sward hardness (ASTM D 2134-66) of no more than about 40, and d. applying a coating over the ink, the indicia having an impact resistance sufficient to render the game ball suitable for use in competitive play.
a. obtaining an ink containing a pigment, a photoinitiator, and a UV-curable resin, b. applying the ink in the form of the indicia by pad printing, c. curing the ink to form a cured film having a sward hardness (ASTM D 2134-66) of no more than about 40, and d. applying a coating over the ink, the indicia having an impact resistance sufficient to render the game ball suitable for use in competitive play.
17. A method according to claim 16, wherein the ink further includes a thinning agent.
18. A method according to claim 16, wherein the UV curable resin comprises an oligomer.
19. A method according to claim 16, wherein the game ball is a golf ball.
20. A method according to claim 19, wherein the ink is formulated and cured such that when the golf ball is subjected to the wet barrel durability test procedure, the ink on at least about 50% of the surface area of the indicia is retained.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/529,361 US5770325A (en) | 1995-09-18 | 1995-09-18 | UV curable ink for game ball and method of printing |
US529,361 | 1995-09-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2173068A1 CA2173068A1 (en) | 1997-03-19 |
CA2173068C true CA2173068C (en) | 2001-12-25 |
Family
ID=24109601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002173068A Expired - Fee Related CA2173068C (en) | 1995-09-18 | 1996-03-29 | Uv curable ink for game ball and method of printing |
Country Status (6)
Country | Link |
---|---|
US (1) | US5770325A (en) |
JP (1) | JP3924336B2 (en) |
KR (1) | KR970014795A (en) |
AU (1) | AU723923B2 (en) |
CA (1) | CA2173068C (en) |
GB (1) | GB2305183B (en) |
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-
1995
- 1995-09-18 US US08/529,361 patent/US5770325A/en not_active Expired - Lifetime
-
1996
- 1996-03-29 CA CA002173068A patent/CA2173068C/en not_active Expired - Fee Related
- 1996-04-04 AU AU50503/96A patent/AU723923B2/en not_active Ceased
- 1996-07-03 GB GB9613959A patent/GB2305183B/en not_active Expired - Fee Related
- 1996-07-15 JP JP20280596A patent/JP3924336B2/en not_active Expired - Lifetime
- 1996-09-06 KR KR1019960038556A patent/KR970014795A/en not_active Application Discontinuation
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AU723923B2 (en) | 2000-09-07 |
US5770325A (en) | 1998-06-23 |
GB2305183A (en) | 1997-04-02 |
JP3924336B2 (en) | 2007-06-06 |
GB2305183B (en) | 1999-10-06 |
GB9613959D0 (en) | 1996-09-04 |
AU5050396A (en) | 1997-03-20 |
JPH09122271A (en) | 1997-05-13 |
KR970014795A (en) | 1997-04-28 |
CA2173068A1 (en) | 1997-03-19 |
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