WO2004041508A1 - Mold and method for the manufacture of holders such as tub-shaped containers - Google Patents
Mold and method for the manufacture of holders such as tub-shaped containers Download PDFInfo
- Publication number
- WO2004041508A1 WO2004041508A1 PCT/NL2003/000765 NL0300765W WO2004041508A1 WO 2004041508 A1 WO2004041508 A1 WO 2004041508A1 NL 0300765 W NL0300765 W NL 0300765W WO 2004041508 A1 WO2004041508 A1 WO 2004041508A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mold
- male
- female part
- female
- cavity
- Prior art date
Links
Classifications
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
- B29C45/561—Injection-compression moulding
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C2045/4078—Removing or ejecting moulded articles using stripping means
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
- B29C45/561—Injection-compression moulding
- B29C2045/5635—Mould integrated compression drive means
-
- 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
- B29L2031/712—Containers; Packaging elements or accessories, Packages
-
- 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
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7132—Bowls, Cups, Glasses
Definitions
- the invention relates to a mold for the manufacture of holders.
- the invention further relates to a method for the manufacture of holders.
- a mold is used wherein plastic is forced from the bottom surface into a longitudinal wall.
- plastic With small wall thicknesses and/or long flow paths and/or a large projected surface and/or low melt plastics, particularly high closing pressures and injection pressures need to be used, particularly if a multi-cavity mold is used.
- especially bottom surfaces of such holders are of relatively thick design.
- the invention contemplates a mold for manufacturing holders with which, with relatively low closing pressure and/or low injection pressure, relatively thin-walled holders can be injection molded.
- a mold according to the invention is characterized by the features of claim 1.
- the plastic be introduced through the part against which the label is not provided.
- this will mean that the plastic is introduced through the male part into a bottom forming part of the mold cavity, while the label is inserted at the opposite side thereof in or over the female part.
- the design of the male and female part is preferably such that in the first position and the second position, the distance between the female part and the male part substantially only varies in or near the bottom forming part of the mold cavity, between the forward end of the male part and the bottom surface of the female part.
- the male part and/or the female part is biased in the second position. As a result, it will have to be actively brought into the first position, and it will automatically be moved to the second position.
- a pressure member can, for instance, be used in the opposite mold part for pushing the respective male or female part into the first position.
- Such a pressure member can, for instance, be a stripping plate or stripping ring or the like, which can also be used for forcing a ready product off the male part or from the female part.
- the respective part, biased in the second position is preferably biased in the second position by simple spring means, for instance a gas filled spring means.
- the respective part, biased in the second position is moved by the injection pressure of the plastic to the first position and only when the injection pressure falls is it pushed back to the second position by the spring means or the like.
- Fig. 3 shows, in cross-sectional side view, a part of a first embodiment of a mold according to the invention
- Figs. 4A-C schematically show, in cross sectional side view, a mold according to the invention, in three steps of a method according to the invention.
- Fig. 5 schematically shows, in cross-sectional side view, a mold according to the invention, in an alternative embodiment.
- a mold 10 for forming a holder, for instance according to Fig. 1 or 2.
- This mold 10 comprises a first part 11 and a second part 12, moveable relative to each other.
- the second part can be moved actively, as will be elucidated further with reference to Fig. 4, for opening and closing the mold.
- a supply device 13 is provided in the first part 11.
- the first part 11 comprises a male part 14, which is substantially formed by a frustoconical or truncate block-shaped part 15, fixedly connected to a first base plate 16.
- a stripper ring 17 or such pressure means is provided which extends around the wide end of the part 15 and is moveable in the direction S with the aid of an ejector plate 18.
- the ejector plate 18 and hence the stripper ring 17 are shown in a retracted, second position.
- the second part 12 comprises a female part 19, which is substantially formed by a block 20 having a cavity 21 therein which corresponds as to shape to that of part 15 and has dimensions such that, as shown in Fig. 3, with the mold 10 in the closed position and the stripper ring 17 retracted, between the male part 14 and the female part 19, a mold cavity 22 is left open, at least defined which has, substantially, the shape of the desired holder 3.
- the block 20 is included in, for instance, a cylindrical space
- a chamber 25 is formed, filled with, for instance, gas or oil or a similar medium for forming a pressure chamber.
- a holder 3 can be formed by introduction of plastic in substantially liquid, at least, moldable form. To that end, steps can be traversed as shown in Figs. 4A-C.
- Fig. 4A the mold 10 is shown in opened condition.
- the block 20 has been pushed by the medium into the chamber 25 into the second position, maximally forward (towards the right in Fig. 4).
- the stripper ring 17 in the first part 11 is moved outwards (towards the left in Fig. 4) with the aid of the ejector plate 18.
- Fig. 4B the mold 10 is shown in closed condition.
- the stripper ring 17 is held in the position moved in outwards direction, shown in Fig. 4A.
- the stripper ring 17 then abuts against the block 20, so that the block 20 is moved backwards, in the direction of the end 24, thereby reducing the volume of the chamber 25 and compressing the medium therein.
- Fig. 4B shows the second position.
- the foremost end 26 of the male end 15 (facing the left in Fig. 4) is at a relatively large distance D from the bottom surface 27 of the cavity 21.
- This distance D is, in particular, larger than the distance between the male part 15 and the wall of the cavity 21 in the female part 19.
- a bottom forming space 29 is formed into which the plastic is introduced via the supply means 13 (not shown in Fig. 4).
- the volume of the bottom forming space 29 is relatively large, for instance approximately equal to the volume of material required for the entire holder. Consequently, the plastic can be introduced into the mold cavity 22 rapidly and in a simple manner, with little counter pressure.
- the ejector plate is moved backwards (to the right in Fig.
- the stripper ring 17 is then no longer retained (or actively pulled back) so that the block 20 can be pushed by the medium into the chamber 25 to the first position (to the right in Fig. 4C).
- the bottom forming space 29 is then considerably reduced.
- the distance Dl between the end 26 and the bottom surface 27 is reduced to the desired wall thickness, for instance equal to the wall thickness of the wall 6 of the holder.
- the plastic is then pressed, for the larger part, from the bottom forming space 29, between the male part 15 and the wall of the cavity 21, for completely filling the mold cavity 22 and hence forming the desired product 3.
- the mold can be opened again to the position shown in Fig. 4A, while the ejector plate 18 and hence the stripper ring 17 are moved forwards, thereby forcing the ready product from the male part 15.
- the stripper rings 17 can force the base plate 40 with male parts 15 backwards in the direction away from the second part 12 or not, or the base plate can be actively withdrawn from the second part or, conversely, be moved thereagainst.
- the distance D between the end 26 of the male parts 15 and the bottom surface 27 of the cavities 21 can be set.
- the pressure in the chamber 41 can be set to be such that, due to the pressure of the plastic flowing into the mold cavities 22, the base plate can be pushed away and only be moved back if the injection pressure falls after all plastic has been introduced.
- the springs can then be omitted or be replaced by controlled gas springs with which the stripper rings 17 can be actively moved for ejecting the holders and/or abutting against the base plate 41.
- a label can be inserted, for instance over or in the cavity 21 or on the male part 15, for in-mold labeling.
- this is symbolically shown by the chain-dotted line L.
- the invention is not limited in any manner to the embodiments as shown and described. Many variations thereon are possible within the framework of the invention. Naturally, the pump 45 and 47 can be combined in a double acting pump.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03772947A EP1583646A1 (en) | 2002-11-05 | 2003-11-04 | Mold and method for the manufacture of holders such as tub-shaped containers |
US10/533,939 US7686610B2 (en) | 2002-11-05 | 2003-11-04 | Mold and method for the manufacture of holders such as tub-shaped containers |
AU2003279610A AU2003279610A1 (en) | 2002-11-05 | 2003-11-04 | Mold and method for the manufacture of holders such as tub-shaped containers |
US12/710,795 US20100148400A1 (en) | 2002-11-05 | 2010-02-23 | Mold and Method for the Manufacture of Holders Such as Tub-Shaped Containers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1021837 | 2002-11-05 | ||
NL1021837A NL1021837C2 (en) | 2002-11-05 | 2002-11-05 | Mold and method for the manufacture of containers such as tub-shaped containers. |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/710,795 Division US20100148400A1 (en) | 2002-11-05 | 2010-02-23 | Mold and Method for the Manufacture of Holders Such as Tub-Shaped Containers |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004041508A1 true WO2004041508A1 (en) | 2004-05-21 |
Family
ID=32310916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NL2003/000765 WO2004041508A1 (en) | 2002-11-05 | 2003-11-04 | Mold and method for the manufacture of holders such as tub-shaped containers |
Country Status (6)
Country | Link |
---|---|
US (2) | US7686610B2 (en) |
EP (2) | EP2314439A1 (en) |
CN (1) | CN100548618C (en) |
AU (1) | AU2003279610A1 (en) |
NL (1) | NL1021837C2 (en) |
WO (1) | WO2004041508A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1034658C2 (en) * | 2007-11-08 | 2009-05-11 | Green Invest Bvba | Injection molding method and injection molding device. |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6082358A (en) | 1998-05-05 | 2000-07-04 | 1263152 Ontario Inc. | Indicating device for aerosol container |
GB2410001A (en) * | 2004-01-16 | 2005-07-20 | Im Pak Technologies Ltd | Injection compression moulding |
SE0401773D0 (en) * | 2004-07-02 | 2004-07-02 | Astrazeneca Ab | An inhalation and a method for assessing said inhalation device |
SE0401787D0 (en) * | 2004-07-05 | 2004-07-05 | Astrazeneca Ab | Inhaler device counter |
SE0401786D0 (en) * | 2004-07-05 | 2004-07-05 | Astrazeneca Ab | Inhaler device |
US20070063386A1 (en) * | 2005-09-01 | 2007-03-22 | Seaver Richard T | Mold tool having movable core |
CN102126276B (en) * | 2010-06-23 | 2013-05-08 | 宁波乐士实业有限公司 | Injection molding mould for tumble dryer of washing machine |
FR3019773B1 (en) | 2014-04-15 | 2017-02-10 | Plastisud | TANDEM MOLD FOR THE PRODUCTION OF SYNTHETIC INJECTED PARTS |
CN111255770B (en) * | 2020-01-18 | 2021-09-03 | 上海超日精密模具有限公司 | Stable self-locking structure for oil hydraulic cylinder |
Citations (6)
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BE559392A (en) * | ||||
US3692456A (en) | 1970-12-28 | 1972-09-19 | J L Mfg Co | Apparatus for converting molten thermoplastic in cup-like articles |
WO1990014207A1 (en) * | 1989-05-18 | 1990-11-29 | Maus Steven M | Plastic injection molding via adaptive mold process |
DE4306973A1 (en) * | 1993-03-05 | 1994-09-08 | Kautex Werke Gmbh | Process for producing hollow bodies from thermoplastic |
DE10051843A1 (en) * | 2000-10-19 | 2002-04-25 | Krauss Maffei Kunststofftech | Device for carrying out injection compression molding in injection molding machine comprises centering ring on movable mold half which can be moved axially and which has springs mounted in it which bias it towards closed position |
EP1314534A2 (en) * | 2001-11-26 | 2003-05-28 | Sumitomo Heavy Industries, Ltd. | A compression injection molding method of a resin molded articles, the mold apparatus, the resin molded article and a molding machine having the mold apparatus |
Family Cites Families (14)
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US3016574A (en) * | 1958-08-06 | 1962-01-16 | Colgate Palmolive Co | Casting apparatus |
DE1779504B2 (en) * | 1968-08-21 | 1972-05-31 | Eckert & Ziegler Gmbh, 8832 Weissenburg | METHOD FOR PROCESSING HEAT-RESISTANT PLASTICS, IN PARTICULAR THERMAL PLASTICS FROM THE AMINOPLASTIC FAMILY ON INJECTION MOLDING MACHINES |
US3660002A (en) * | 1969-09-25 | 1972-05-02 | Peter J Morroni | Apparatus for molding open containers |
US3846526A (en) * | 1970-02-12 | 1974-11-05 | Scott Paper Co | Method of forming a plastic container |
JPS5610181B2 (en) * | 1972-10-10 | 1981-03-06 | ||
US3942755A (en) * | 1974-10-09 | 1976-03-09 | Pioneer Plastic Containers Limited | Moulds for use on injection moulding machines |
JPS5812738A (en) * | 1981-07-16 | 1983-01-24 | Matsushita Electric Ind Co Ltd | Heat cycle injection compression molding method |
JPS6115117U (en) * | 1984-07-02 | 1986-01-29 | マツダ株式会社 | Plastic in-mold molding equipment |
US4822553A (en) * | 1986-11-06 | 1989-04-18 | Marshall Floyd M | Apparatus and method for thermoforming a plastic article having an undercut |
IT1247883B (en) * | 1991-05-03 | 1995-01-05 | Devi Spa | PROCEDURE AND MACHINE FOR THE MOLDING OF COUPLED PLASTIC MATERIAL |
US5225213A (en) * | 1991-12-16 | 1993-07-06 | John Brown Inc. | Apparatus for differential pressure forming and trimming |
US5800759A (en) * | 1992-12-27 | 1998-09-01 | Nissha Printing Co., Ltd. | Insert molded article, and apparatus and method for producing the insert molded article |
SE510712C2 (en) * | 1997-10-13 | 1999-06-14 | Asea Brown Boveri | Method and apparatus for casting objects |
CA2228458C (en) * | 1998-02-02 | 2008-08-05 | Mold-Masters Limited | Injection molding cooled gate insert |
-
2002
- 2002-11-05 NL NL1021837A patent/NL1021837C2/en not_active IP Right Cessation
-
2003
- 2003-11-04 US US10/533,939 patent/US7686610B2/en not_active Expired - Fee Related
- 2003-11-04 EP EP10180816A patent/EP2314439A1/en not_active Withdrawn
- 2003-11-04 EP EP03772947A patent/EP1583646A1/en not_active Withdrawn
- 2003-11-04 CN CNB2003801083105A patent/CN100548618C/en not_active Expired - Fee Related
- 2003-11-04 AU AU2003279610A patent/AU2003279610A1/en not_active Abandoned
- 2003-11-04 WO PCT/NL2003/000765 patent/WO2004041508A1/en not_active Application Discontinuation
-
2010
- 2010-02-23 US US12/710,795 patent/US20100148400A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE559392A (en) * | ||||
US3692456A (en) | 1970-12-28 | 1972-09-19 | J L Mfg Co | Apparatus for converting molten thermoplastic in cup-like articles |
WO1990014207A1 (en) * | 1989-05-18 | 1990-11-29 | Maus Steven M | Plastic injection molding via adaptive mold process |
DE4306973A1 (en) * | 1993-03-05 | 1994-09-08 | Kautex Werke Gmbh | Process for producing hollow bodies from thermoplastic |
DE10051843A1 (en) * | 2000-10-19 | 2002-04-25 | Krauss Maffei Kunststofftech | Device for carrying out injection compression molding in injection molding machine comprises centering ring on movable mold half which can be moved axially and which has springs mounted in it which bias it towards closed position |
EP1314534A2 (en) * | 2001-11-26 | 2003-05-28 | Sumitomo Heavy Industries, Ltd. | A compression injection molding method of a resin molded articles, the mold apparatus, the resin molded article and a molding machine having the mold apparatus |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1034658C2 (en) * | 2007-11-08 | 2009-05-11 | Green Invest Bvba | Injection molding method and injection molding device. |
WO2009061200A2 (en) * | 2007-11-08 | 2009-05-14 | Green Investments Bvba | Injection molding method and injection molding apparatus |
WO2009061200A3 (en) * | 2007-11-08 | 2009-06-25 | Green Invest Bvba | Injection molding method and injection molding apparatus |
Also Published As
Publication number | Publication date |
---|---|
CN1735496A (en) | 2006-02-15 |
EP1583646A1 (en) | 2005-10-12 |
AU2003279610A1 (en) | 2004-06-07 |
US20100148400A1 (en) | 2010-06-17 |
NL1021837C2 (en) | 2004-05-07 |
CN100548618C (en) | 2009-10-14 |
US20060018991A1 (en) | 2006-01-26 |
EP2314439A1 (en) | 2011-04-27 |
US7686610B2 (en) | 2010-03-30 |
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