CA1266837A - Polyester with oriented crystallized thread finish for hot fill applications and method of making same - Google Patents
Polyester with oriented crystallized thread finish for hot fill applications and method of making sameInfo
- Publication number
- CA1266837A CA1266837A CA000505971A CA505971A CA1266837A CA 1266837 A CA1266837 A CA 1266837A CA 000505971 A CA000505971 A CA 000505971A CA 505971 A CA505971 A CA 505971A CA 1266837 A CA1266837 A CA 1266837A
- Authority
- CA
- Canada
- Prior art keywords
- neck finish
- preform
- crystallinity
- order
- polyester container
- 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
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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6409—Thermal conditioning of preforms
- B29C49/6436—Thermal conditioning of preforms characterised by temperature differential
- B29C49/6445—Thermal conditioning of preforms characterised by temperature differential through the preform length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
-
- 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
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6604—Thermal conditioning of the blown article
- B29C49/6605—Heating the article, e.g. for hot fill
-
- 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
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
-
- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0039—Amorphous
-
- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/004—Semi-crystalline
-
- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0041—Crystalline
-
- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/005—Oriented
- B29K2995/0053—Oriented bi-axially
-
- 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
- B29L2031/7158—Bottles
-
- 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
- B29L2031/7158—Bottles
- B29L2031/716—Bottles of the wide mouth type, i.e. the diameters of the bottle opening and its body are substantially identical
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/907—Direct application of fluid pressure differential to shape, reshape, i.e. distort, or sustain an article or preform and crystallizing of nonstretched or molecularly unoriented portion thereof
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/91—Product with molecular orientation
-
- 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
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1397—Single layer [continuous layer]
Abstract
ABSTRACT OF THE DISCLOSURE
This relates to the formation of wide mouth bottles and jars for receiving a hot fill product where the jars and bottles are formed of a suitable polyester such as PET. The bottle or jar is initially formed as part of an intermediate article including an upper adapter portion which is reusable so that substantially all of the resultant bottle and jar, particularly the neck finish thereof is biaxially oriented. The intermediate article is formed from a preform which is blow molded within a conventional type of blow mold. In the reheating of the preform, that portion of the preform which becomes the neck finish of the bottle or jar is heated to a higher temperature than the remainder of the preform and to a temperature wherein thermal crystallization in addition to strain crystallization occurs. This results in the neck finish having a higher density than other portions of the bottle or jar and being more resistant to shrinkage during hot filling.
This relates to the formation of wide mouth bottles and jars for receiving a hot fill product where the jars and bottles are formed of a suitable polyester such as PET. The bottle or jar is initially formed as part of an intermediate article including an upper adapter portion which is reusable so that substantially all of the resultant bottle and jar, particularly the neck finish thereof is biaxially oriented. The intermediate article is formed from a preform which is blow molded within a conventional type of blow mold. In the reheating of the preform, that portion of the preform which becomes the neck finish of the bottle or jar is heated to a higher temperature than the remainder of the preform and to a temperature wherein thermal crystallization in addition to strain crystallization occurs. This results in the neck finish having a higher density than other portions of the bottle or jar and being more resistant to shrinkage during hot filling.
Description
~266837 IMPROVED POLYESTER CONTAINER WITH
ORIENTED, C~YSTALLIZED THREAD FINISH
FOR HOT FILL APPLICATIONS
AND METHOD OF MAKING SAME
This invention relates in general to ^-~ new and useful improvements in polyester i` containers, and more particularly to a polyester container in the form of a wide mouth jar or bottle having a threaded neck finish for receiving a replaceable closure.
Most particularly, this invention relates to improving the thread finish dimensional stability of polyester containers when hot filled at temperatures up to and including 212F.
There is currently being developed polyester containers utilizing a controlled and improved version of the forming method disclosed in Beck et al, U.S. Patent N~, 4,496,064 which will yield a wide mouth jar or bottle that exhibits a 4 - 6% volume loss when filled with a hot product at 212F. In this particular container, major container diameters are reduced by 2 - 3~ after hot filling. Shrinkage levels to this degree will be excessive in the thread finish area for many closures.
It has been taught by U.S. Patent No. 4,375,422 that the thread finish of a preform may be purposely crystallized to raise the glass transition temperature (Tg) and thus the thermal distortion resistance of the . .
thread finish of an essentially amorphous preform prior to reheat below molding. However, in accordance with the teaching of this patent, the original finish of the preform becomes the final finish of the resultant 5 container.
The present invention provides a polyester container comprising a body terminating in a large diameter mouth, said mouth having a diameter generally approaching the diameter of said body, said mouth being defined by a neck finish of the type for releasably receiving a closure, said neck finish being biaxially oriented, and said neck finish having a greater density than said body to provide a diameter reduction when the container is hot filled that is materially less than that of said body in accordance with this invention it is proposed, in the reheating of a previously formed preform as part of a blow molding process to apply sufficient heat to a preselected band of the preform body to provide a zone of semi-opaque crystallinity, which z~ne of semi-opaque crystallinity will be aligned with the neck finish of a resultant polyester container which is biaxially oriented in accordance with U. S. Patent No.
4,496,064. The net result is a container neck finish 25 which exhibits substantially less than 1% diameter change versus 2 - 3% diameter change in the body of such container. The 1% and less diameter change in the container finish has demonstrated effective capping and sealing performance.
With the above and other objects in view that will hereinafter appear, the nature of the invention will be more clearly understood by reference to the following detailed description, the appendex claims, and the several views illustrated in the accompanying drawings.
Figure l is a vertical sectional view taken through a typical preform utilized in conjunction with this invention and schematically shows the manner of heating the same.
~266837 .
Figure 2 is a half sectional view taken through a blow mold formed in accordance with this invention and the heated preform of Figure 1 positioned therein.
Figure 3 i9 a half sectional view taken through an intermediate article formed by blow molding the preform of Figure 1 in t-he blow mold of Figure 2.
-- Figure 4 is a half sectional view of a resultant container formed by severing the intermediate article of Figure 3 generally as indicated by the arrow A, which container is the subject of this invention.
Referring now to the drawings in detail, reference is first made to Figure 1 wherein there is illustrated a preform, generally identified by the numeral 10, of the type utilized in accordance with this invention. The preform 10 has an open upper neck portion 12 which terminates at a radially outwardly directed flange or shoulder portion 14 by which the preform is carried in a manner which does not form part of this invention.
Below the flange 14 the preform 10 includes a portion 16 of increased thickness which terminates in a body portion 18. The lower end of the preform 10 is generally hemispherical as at 20.
Preforms, such as the preform 10, are generally heated by pasQing the same along a path which i8 normal to the plane of Figure 1 and which i9 parallel to a plurality of heating elements. In Figure 1, these heating elements are identified as quartz lamps 22.
At least one of the quartz lamps 22 is ~Z66837 po7itioned between ~hield elements 24, 26 which are vertical~y spaced and which are aligned with a zone 26 of the preform body 18.
If desired, the quartz lamp between the shields 24 may be of a higher capacity than the other quartz lamp or there may be several such quartz lamps between the shields 24. ~In any event, the shields 24 serve to effect a heating of the preform l~` in~a zone- 26-to a : 10 temperature above that to which the remainder of the preform is heated. The zone 26 will be heated to the point`where the zone 26 becomes a zone of semi-opaque crystallinity with the zone being purposely created at a specific site on the preform so that the zone, after strétch biowing of the preform, is .. . .., i , . ... .. . . . . . . .
specifically aligned with a portion of a special mold which is ili~strated in Figure 2 and will be described in detail at thiCi time.
~eferring now to Figure 2, it will be seen that there is illustrated a typical blow mold 26 which will be formed in two halves and which define a mold cavity 28. The mold cavity 28 is particularly configurated to define; an intèimediate articlé such as thàt illustrated in Figure 3 and which will be described in more detail hereinafter.
It is to be understood that in the blow molding of the preform 10 within the mold cavity 28, conventional equipment will be utilized including a blow tube which will extend into the neck 12 of the preform 10 and be sealed relative thereto. Further, the equipment will normally include a ~tretch rod which will engage the bottom 20 of the preform ~266837 serve to axially elongate the preform either in advance of the axial extension of the preform due to internal pressurization or during the ~ame.
It i9 to be noted that the cavity 28 has a lower portion 30 to define a container and that an upper part 32 of the lower porti-on 30 defines a neck finish for the container.
.
Above the upper part 32 the mold cavity 28 has a portion 34 which defines an adapter. If desired, immediately adjacent the upper part 32 the upper portion 34 may include a lower part 36 which is configurated so as to form a general interlock between the resultant intermediate article and the service of the mold cavity 28.
Reference is now made to Figure 3 wherein there i9 illustrated an intermediate article generally identified by the numeral 38. The intermediate article 38 was blow molded from the preform 10 in the mold cavity .28. The intermediate article 38 includes the neck 12 and flange 14 of the preform 10.
These portions of the preform 10 have not been stretched in either the hoop direction or in an axial direction and remain constant from the condition of the preform.
Below the flange 14 the intermediate article 38 includes a tapered adapter portion 40 which progressively increases in diameter and is biaxially oriented to an increasing degree as it increases in diameter. If desired, the adapter 40 may have a lower part 42 of a configuration which will stiffen the same and which provides for an interlock with 126683'7 the mold 26.
The lower part of the intermediate article 38 i9 in the form of a container which is generally identified by the numeral 44.
The container 44 includes a bottom wall 46 which has a radially outer base portion -48 joined to a resultant body 50. If deAired, the body 50 may be provided with reinforcing beads 52 which preferably extend radially inwardly of the body 50 and are formed by beads 54 of the mold 26.
The body 50 terminates at an upper part thereof in a generally rounded shoulder 56 which, in turn, terminates in a neck finish 58. The neck finish 58 may be of the "threaded" type and include thread 60 as illustrated or thread elements or lugs of the conventional type. The neck finish- 58 is joined to the lower portion 42 of the adapter 40 by a qenerally horizontal flange portion 62. 1 -It is t~.o be understood that the container 44, with the exception of a central portion of the body wall 46, is highly biaxially oriented. It will also be seen that the zone 25 of the preform 10 has become axially elongated and extends from the top of the shoulder portion 56 above the part 42 of the adapter 40.
As is schematically illustrated in Figure 3, the upper part of the intermediate article 38 will include an amorphous transparent region (64), an intermediate crystalline opaque region (25) and a lower oriented transparent region (66).
lZ66837 The container 44 will be separated from the adapter 40 by cutting the flange 62 as indicated by the arrow A. This cutting is preferably effected by use of a laser which will be fiYed while the adapter 38 is rotated.
The container 44, after being severed from the remainder of the intermedi~te article 38 appears in Figure 4. As pointed ~ out above, the entire container 44 will be : 10 biaxially oriented, with the exception of a central part of the bottom wall 46, and this biaxial orientation, together with other control features which are not the subject of thi~ invention, will result in a polyester container (PET) wherein the density of the biaxially oriented (strain crystallized only) transparent region 66 will be generally below 1.36 grams/cc whereas the density of the thermal and strain crystallized finish region (25) will be substantially above 1.37 grams/cc. With respect to this, density as measured by ASTM 1.505 is a direct measure of percent crystallinity. Thus the oriented transparent region will have a crystallinity below 22% while the crystallized finish region will have a crystallinity above 30~.
Thus by having a high degree of biaxial orientation together with an increased density due to the increase in the crystallization thermally, the threaded neck finish 58 will have a much smaller degree of shrinkage when the container 44 is filled with a hot product at temperatures up to and including 212 F. As stated above, the shrinkage of the neck finish 58 will be no i266837 greater and generally substantially less than 1~ whereas major diameters of the container 44 outside of the threaded neck finish area, will have a permissible shrinkage of 2 - 3% after hot filling. This great reduction in shrinkage of the neck finish 58 permits conventional closures to be applied to the container 44-after hot filling t'o provide the necessary seal and the- ne-cessary benefits of removal and replacement of conventional clo~ures.
~ Although-only a preferred embodim'e'n't' of the container and the method of forming the same have been specifically illustrated and described herein, it is to be understood that the details of the container and the method of making the same may be varied without departing from the spirit and scope of the invention as defined by the appended claims.
- '-'
ORIENTED, C~YSTALLIZED THREAD FINISH
FOR HOT FILL APPLICATIONS
AND METHOD OF MAKING SAME
This invention relates in general to ^-~ new and useful improvements in polyester i` containers, and more particularly to a polyester container in the form of a wide mouth jar or bottle having a threaded neck finish for receiving a replaceable closure.
Most particularly, this invention relates to improving the thread finish dimensional stability of polyester containers when hot filled at temperatures up to and including 212F.
There is currently being developed polyester containers utilizing a controlled and improved version of the forming method disclosed in Beck et al, U.S. Patent N~, 4,496,064 which will yield a wide mouth jar or bottle that exhibits a 4 - 6% volume loss when filled with a hot product at 212F. In this particular container, major container diameters are reduced by 2 - 3~ after hot filling. Shrinkage levels to this degree will be excessive in the thread finish area for many closures.
It has been taught by U.S. Patent No. 4,375,422 that the thread finish of a preform may be purposely crystallized to raise the glass transition temperature (Tg) and thus the thermal distortion resistance of the . .
thread finish of an essentially amorphous preform prior to reheat below molding. However, in accordance with the teaching of this patent, the original finish of the preform becomes the final finish of the resultant 5 container.
The present invention provides a polyester container comprising a body terminating in a large diameter mouth, said mouth having a diameter generally approaching the diameter of said body, said mouth being defined by a neck finish of the type for releasably receiving a closure, said neck finish being biaxially oriented, and said neck finish having a greater density than said body to provide a diameter reduction when the container is hot filled that is materially less than that of said body in accordance with this invention it is proposed, in the reheating of a previously formed preform as part of a blow molding process to apply sufficient heat to a preselected band of the preform body to provide a zone of semi-opaque crystallinity, which z~ne of semi-opaque crystallinity will be aligned with the neck finish of a resultant polyester container which is biaxially oriented in accordance with U. S. Patent No.
4,496,064. The net result is a container neck finish 25 which exhibits substantially less than 1% diameter change versus 2 - 3% diameter change in the body of such container. The 1% and less diameter change in the container finish has demonstrated effective capping and sealing performance.
With the above and other objects in view that will hereinafter appear, the nature of the invention will be more clearly understood by reference to the following detailed description, the appendex claims, and the several views illustrated in the accompanying drawings.
Figure l is a vertical sectional view taken through a typical preform utilized in conjunction with this invention and schematically shows the manner of heating the same.
~266837 .
Figure 2 is a half sectional view taken through a blow mold formed in accordance with this invention and the heated preform of Figure 1 positioned therein.
Figure 3 i9 a half sectional view taken through an intermediate article formed by blow molding the preform of Figure 1 in t-he blow mold of Figure 2.
-- Figure 4 is a half sectional view of a resultant container formed by severing the intermediate article of Figure 3 generally as indicated by the arrow A, which container is the subject of this invention.
Referring now to the drawings in detail, reference is first made to Figure 1 wherein there is illustrated a preform, generally identified by the numeral 10, of the type utilized in accordance with this invention. The preform 10 has an open upper neck portion 12 which terminates at a radially outwardly directed flange or shoulder portion 14 by which the preform is carried in a manner which does not form part of this invention.
Below the flange 14 the preform 10 includes a portion 16 of increased thickness which terminates in a body portion 18. The lower end of the preform 10 is generally hemispherical as at 20.
Preforms, such as the preform 10, are generally heated by pasQing the same along a path which i8 normal to the plane of Figure 1 and which i9 parallel to a plurality of heating elements. In Figure 1, these heating elements are identified as quartz lamps 22.
At least one of the quartz lamps 22 is ~Z66837 po7itioned between ~hield elements 24, 26 which are vertical~y spaced and which are aligned with a zone 26 of the preform body 18.
If desired, the quartz lamp between the shields 24 may be of a higher capacity than the other quartz lamp or there may be several such quartz lamps between the shields 24. ~In any event, the shields 24 serve to effect a heating of the preform l~` in~a zone- 26-to a : 10 temperature above that to which the remainder of the preform is heated. The zone 26 will be heated to the point`where the zone 26 becomes a zone of semi-opaque crystallinity with the zone being purposely created at a specific site on the preform so that the zone, after strétch biowing of the preform, is .. . .., i , . ... .. . . . . . . .
specifically aligned with a portion of a special mold which is ili~strated in Figure 2 and will be described in detail at thiCi time.
~eferring now to Figure 2, it will be seen that there is illustrated a typical blow mold 26 which will be formed in two halves and which define a mold cavity 28. The mold cavity 28 is particularly configurated to define; an intèimediate articlé such as thàt illustrated in Figure 3 and which will be described in more detail hereinafter.
It is to be understood that in the blow molding of the preform 10 within the mold cavity 28, conventional equipment will be utilized including a blow tube which will extend into the neck 12 of the preform 10 and be sealed relative thereto. Further, the equipment will normally include a ~tretch rod which will engage the bottom 20 of the preform ~266837 serve to axially elongate the preform either in advance of the axial extension of the preform due to internal pressurization or during the ~ame.
It i9 to be noted that the cavity 28 has a lower portion 30 to define a container and that an upper part 32 of the lower porti-on 30 defines a neck finish for the container.
.
Above the upper part 32 the mold cavity 28 has a portion 34 which defines an adapter. If desired, immediately adjacent the upper part 32 the upper portion 34 may include a lower part 36 which is configurated so as to form a general interlock between the resultant intermediate article and the service of the mold cavity 28.
Reference is now made to Figure 3 wherein there i9 illustrated an intermediate article generally identified by the numeral 38. The intermediate article 38 was blow molded from the preform 10 in the mold cavity .28. The intermediate article 38 includes the neck 12 and flange 14 of the preform 10.
These portions of the preform 10 have not been stretched in either the hoop direction or in an axial direction and remain constant from the condition of the preform.
Below the flange 14 the intermediate article 38 includes a tapered adapter portion 40 which progressively increases in diameter and is biaxially oriented to an increasing degree as it increases in diameter. If desired, the adapter 40 may have a lower part 42 of a configuration which will stiffen the same and which provides for an interlock with 126683'7 the mold 26.
The lower part of the intermediate article 38 i9 in the form of a container which is generally identified by the numeral 44.
The container 44 includes a bottom wall 46 which has a radially outer base portion -48 joined to a resultant body 50. If deAired, the body 50 may be provided with reinforcing beads 52 which preferably extend radially inwardly of the body 50 and are formed by beads 54 of the mold 26.
The body 50 terminates at an upper part thereof in a generally rounded shoulder 56 which, in turn, terminates in a neck finish 58. The neck finish 58 may be of the "threaded" type and include thread 60 as illustrated or thread elements or lugs of the conventional type. The neck finish- 58 is joined to the lower portion 42 of the adapter 40 by a qenerally horizontal flange portion 62. 1 -It is t~.o be understood that the container 44, with the exception of a central portion of the body wall 46, is highly biaxially oriented. It will also be seen that the zone 25 of the preform 10 has become axially elongated and extends from the top of the shoulder portion 56 above the part 42 of the adapter 40.
As is schematically illustrated in Figure 3, the upper part of the intermediate article 38 will include an amorphous transparent region (64), an intermediate crystalline opaque region (25) and a lower oriented transparent region (66).
lZ66837 The container 44 will be separated from the adapter 40 by cutting the flange 62 as indicated by the arrow A. This cutting is preferably effected by use of a laser which will be fiYed while the adapter 38 is rotated.
The container 44, after being severed from the remainder of the intermedi~te article 38 appears in Figure 4. As pointed ~ out above, the entire container 44 will be : 10 biaxially oriented, with the exception of a central part of the bottom wall 46, and this biaxial orientation, together with other control features which are not the subject of thi~ invention, will result in a polyester container (PET) wherein the density of the biaxially oriented (strain crystallized only) transparent region 66 will be generally below 1.36 grams/cc whereas the density of the thermal and strain crystallized finish region (25) will be substantially above 1.37 grams/cc. With respect to this, density as measured by ASTM 1.505 is a direct measure of percent crystallinity. Thus the oriented transparent region will have a crystallinity below 22% while the crystallized finish region will have a crystallinity above 30~.
Thus by having a high degree of biaxial orientation together with an increased density due to the increase in the crystallization thermally, the threaded neck finish 58 will have a much smaller degree of shrinkage when the container 44 is filled with a hot product at temperatures up to and including 212 F. As stated above, the shrinkage of the neck finish 58 will be no i266837 greater and generally substantially less than 1~ whereas major diameters of the container 44 outside of the threaded neck finish area, will have a permissible shrinkage of 2 - 3% after hot filling. This great reduction in shrinkage of the neck finish 58 permits conventional closures to be applied to the container 44-after hot filling t'o provide the necessary seal and the- ne-cessary benefits of removal and replacement of conventional clo~ures.
~ Although-only a preferred embodim'e'n't' of the container and the method of forming the same have been specifically illustrated and described herein, it is to be understood that the details of the container and the method of making the same may be varied without departing from the spirit and scope of the invention as defined by the appended claims.
- '-'
Claims (18)
1. A polyester container comprising a body terminating in a large diameter mouth, said mouth having a diameter generally approaching the diameter of said body, said mouth being defined by a neck finish of the type for releasably receiving a closure, said neck finish being biaxially oriented, and said neck finish having a greater density than said body to provide a diameter reduction when the container is hot filled that is materially less than that of said body.
2. A polyester container according to claim 1 wherein when said container is filled with a hot fill at a temperature on the order of 212°F said neck finish diameter reduction is on the order of 1% and less.
3. A polyester container according to claim 1 wherein said neck finish has a density on the order of 1.37 grams/cubic centimeter and above as compared to a density on the order of 1.36 grams/cubic centimeter and below for said body.
4. A polyester container according to claim 1 wherein said neck finish is strain and thermally crystallized and said body is strain crystallized only.
5. A polyester container according to claim 1 wherein said neck finish is strain and thermally crystallized and said body is strain crystallized only, said body having a crystallinity on the order of 22% and below and said neck finish having a crystallinity on the order of 30% and above.
6. A polyester container according to claim 4 wherein said neck finish is of semi-opaque crystallinity.
7. A polyester container according to claim 1 wherein said container is formed as part of an intermediate article including an upper adapter element, and said shrink characteristics of said adapter element adjacent said neck finish being generally the same as that of said neck finish.
8. An intermediate article according to claim 7 wherein said adapter element has a band of semi-opaque crystallinity which includes said neck finish and an adjacent portion of said adapter element.
9. A method of forming a polyester container comprising a body terminating in a large diameter mouth, said mouth being defined by a neck finish of the type for releasably receiving a closure, said neck finish being biaxially oriented and having a diameter reduction when the container is hot filled that is materially less than that of said body, said method comprising the steps of providing a blow mold having a mold cavity defining a one piece intermediate article including said container and an adapter element, providing a preform of a size and shape to form said intermediate article within said mold cavity, heating said preform to a blow molding temperature, said heating including the heating of an intermediate band of said preform to a higher temperature than that of the remainder of said preform to provide in said preform a zone of semi-opaque crystallinity, axially elongating said preform during a blow molding of said preform in said cavity and thereby aligning said zone of semi-opaque crystallinity with that portion of said mold cavity which defines said neck finish and an adjacent portion of said adapter element.
10. A method according to claim 9 wherein said heating of said preform is effected by a plurality of separate heaters, and means are provided for heating said preform zone to a higher temperature than other portions of said preform.
11. A polyester container having a biaxially oriented neck finish, said neck finish having a higher degree of crystallinity than the body of the container, said container formed from a preform having a portion heat treated such that this portion becomes a zone of semi-opaque crystallinity, and said zone forming the neck finish of said container, such that hot fill shrinkage of the diameter of the neck finish is less than 1% at a filling temperature on the order of 212°F.
12. A polyester container according to claim 11 wherein said neck finish has a density on the order of 1.37 grams/cubic centimeter and above as compared to a density on the order of 1.36 grams/cubic centimeter and below for said body.
13. A polyester container according to claim 11 wherein said neck finish is strain and thermally crystallized and said body is strain crystallized only.
14. A polyester container according to claim 11 wherein said neck finish is strain and thermally crystallized and said body is strain crystallized only, said body having a crystallinity on the order of 22%
and below and said neck finish having a crystallinity on the order of 30% and above.
and below and said neck finish having a crystallinity on the order of 30% and above.
15. A polyester container according to claim 13 wherein said neck finish is of semi-opaque crystallinity.
16. A polyester container according to claim 1 wherein said neck finish is of semi-opaque crystallinity.
17. A polyester container according to claim 11 wherein said body has a crystallinity on the order of 22%
and below and said neck finish has a crystallinity on the order of 30% and above.
and below and said neck finish has a crystallinity on the order of 30% and above.
18. A polyester container according to claim wherein said body has a crystallinity on the order of 22%
and below and said neck finish has a crystallinity on the order of 30% and above.
and below and said neck finish has a crystallinity on the order of 30% and above.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US720,504 | 1985-04-05 | ||
US06/720,504 US4618515A (en) | 1985-04-05 | 1985-04-05 | Polyester container with oriented, crystallized thread finish for hot fill applications and method of making same |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1266837A true CA1266837A (en) | 1990-03-20 |
Family
ID=24894233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000505971A Expired - Fee Related CA1266837A (en) | 1985-04-05 | 1986-04-07 | Polyester with oriented crystallized thread finish for hot fill applications and method of making same |
Country Status (8)
Country | Link |
---|---|
US (1) | US4618515A (en) |
EP (1) | EP0197780A3 (en) |
JP (1) | JPS61293829A (en) |
AU (1) | AU579720B2 (en) |
CA (1) | CA1266837A (en) |
DK (1) | DK153686A (en) |
FI (1) | FI861459A (en) |
NO (1) | NO861332L (en) |
Families Citing this family (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4665682A (en) * | 1985-05-03 | 1987-05-19 | Continental Pet Technologies, Inc. | Method for producing a hot fillable, collapse resistant polyester container without the need to utilize set process techniques and/or non-conventional container geometries |
US4863046A (en) * | 1987-12-24 | 1989-09-05 | Continental Pet Technologies, Inc. | Hot fill container |
US4927680A (en) * | 1987-12-24 | 1990-05-22 | Continental Pet Technologies, Inc. | Preform and method of forming container therefrom |
US5011648A (en) * | 1989-02-14 | 1991-04-30 | Van Dorn Company | System, method and apparatus for hot fill PET container |
US4982854A (en) * | 1989-07-18 | 1991-01-08 | Kabushikikaisha Matumotoya Shokuhin | Beverage container with sipping tube |
US5067622A (en) * | 1989-11-13 | 1991-11-26 | Van Dorn Company | Pet container for hot filled applications |
US5066528A (en) * | 1990-03-05 | 1991-11-19 | Continental Pet Technologies, Inc. | Refillable polyester container and preform for forming the same |
US5198248A (en) * | 1990-03-05 | 1993-03-30 | Continental Pet Technologies, Inc. | Blow mold for forming a refillable polyester container |
JP3128764B2 (en) * | 1990-10-19 | 2001-01-29 | 三井化学株式会社 | Bottle made of saturated polyester for carbonated drinks |
DE4107011A1 (en) * | 1991-03-05 | 1992-09-10 | Wild Rudolf Gmbh & Co | METHOD AND DEVICE FOR PRODUCING BLOW-MOLDED HOLLOW BODIES |
EP0521212A1 (en) * | 1991-07-03 | 1993-01-07 | Toyo Seikan Kaisha Limited | Highly drawn and blow-molded polyester bottle and method of manufacturing thereof |
US5344912A (en) * | 1992-02-03 | 1994-09-06 | Therma-Plate Corporation | Elevated temperature dimensionally stable polyester with low gas permeability |
US5346733A (en) * | 1992-04-03 | 1994-09-13 | Therma-Plate Corporation | Elevated temperature dimensionally stable polyester articles with low gas permeability |
US5281387A (en) * | 1992-07-07 | 1994-01-25 | Continental Pet Technologies, Inc. | Method of forming a container having a low crystallinity |
ATE157927T1 (en) * | 1992-07-07 | 1997-09-15 | Continental Pet Technologies | METHOD FOR SHAPING A CONTAINER HAVING A HIGH CRYSTALLINITY SIDEWALL AND A LOW CRYSTALLINITY BOTTOM |
US5474735A (en) * | 1993-09-24 | 1995-12-12 | Continental Pet Technologies, Inc. | Pulse blow method for forming container with enhanced thermal stability |
US5431291A (en) * | 1994-03-28 | 1995-07-11 | Hoover Universal, Inc. | Heat set neck finish with segmented threads |
FR2732924B1 (en) * | 1995-04-12 | 1997-06-13 | Sidel Sa | METHOD AND DEVICE FOR SELECTIVE HEATING OF A CONTAINER PREFORM |
IT1282433B1 (en) * | 1995-10-02 | 1998-03-23 | Sipa Spa | PROCESS AND SINGLE-STAGE APPARATUS FOR THE PRODUCTION OF THERMOPLASTIC RESIN CONTAINERS |
EP0839632A1 (en) * | 1996-10-31 | 1998-05-06 | Constar International Holland (Plastics) BV | Process and device for crystallising and forming preform necks by blow moulding hollow bodies |
WO1998023425A2 (en) * | 1996-11-28 | 1998-06-04 | Constar International Holland B.V. | Process and apparatus for neck crystallisation of a preform |
US6062408A (en) * | 1997-04-09 | 2000-05-16 | Dtl Technology Limited Partnership | Wide mouth hot fill container |
US5988416A (en) | 1998-07-10 | 1999-11-23 | Crown Cork & Seal Technologies Corporation | Footed container and base therefor |
US6228317B1 (en) | 1998-07-30 | 2001-05-08 | Graham Packaging Company, L.P. | Method of making wide mouth blow molded container |
US6296471B1 (en) * | 1998-08-26 | 2001-10-02 | Crown Cork & Seal Technologies Corporation | Mold used to form a footed container and base therefor |
US6666001B2 (en) | 1999-08-05 | 2003-12-23 | Pepsico Inc. | Plastic container having an outwardly bulged portion |
WO2001032386A2 (en) * | 1999-11-02 | 2001-05-10 | The Coca-Cola Company | Improved apparatus and method for concealing a promotional compartment |
US6749780B2 (en) * | 2000-06-27 | 2004-06-15 | Graham Packaging Company, L.P. | Preform and method for manufacturing a multi-layer blown finish container |
US6568156B2 (en) | 2000-06-30 | 2003-05-27 | Schmalbach-Lubeca Ag | Method of providing a thermally-processed commodity within a plastic container |
US6413466B1 (en) * | 2000-06-30 | 2002-07-02 | Schmalbach-Lubeca Ag | Plastic container having geometry minimizing spherulitic crystallization below the finish and method |
US6814923B2 (en) * | 2001-12-27 | 2004-11-09 | Graham Packaging Company, L.P. | Preform, intermediate article and method for manufacturing a blown finish container |
US7033656B2 (en) * | 2002-04-12 | 2006-04-25 | Graham Packaging Pet Technologies, Inc. | Graded crystallization of container finishes |
US6997336B2 (en) * | 2002-09-23 | 2006-02-14 | Graham Packaging Company, L.P. | Plastic cafare |
US20040091651A1 (en) * | 2002-11-01 | 2004-05-13 | Mark Rule | Pet copolymer composition with enhanced mechanical properties and stretch ratio, articles made therewith, and methods |
US20050260371A1 (en) * | 2002-11-01 | 2005-11-24 | Yu Shi | Preform for low natural stretch ratio polymer, container made therewith and methods |
US7138082B2 (en) * | 2002-12-24 | 2006-11-21 | Graham Packaging Pet Technologies Inc. | Swage-forming of container threads |
DE602004023195D1 (en) * | 2003-06-18 | 2009-10-29 | Coca Cola Co | METHOD FOR HOTFILLING CONTAINERS MADE FROM POLYESTERIC COMPOSITIONS |
US7531125B2 (en) * | 2003-08-25 | 2009-05-12 | Ring Container Technologies | Blow molded wide mouth pet container and method of manufacture |
US20050221036A1 (en) * | 2004-04-01 | 2005-10-06 | The Coca-Cola Company | Polyester composition with enhanced gas barrier, articles made therewith, and methods |
US7820257B2 (en) * | 2005-05-11 | 2010-10-26 | The Coca-Cola Company | Preforms for preparing lightweight stretch blow molded PET copolymer containers and methods for making and using same |
US7572493B2 (en) * | 2005-05-11 | 2009-08-11 | The Coca-Cola Company | Low IV pet based copolymer preform with enhanced mechanical properties and cycle time, container made therewith and methods |
US20070045216A1 (en) * | 2005-08-03 | 2007-03-01 | Graham Packaging Company, L.P. | Plastic container finish with structural rib |
WO2007056248A2 (en) * | 2005-11-04 | 2007-05-18 | Smucker Fruit Processing Company | Laser trimmed drip free bottle |
JP5063935B2 (en) * | 2006-06-02 | 2012-10-31 | 東洋製罐株式会社 | Polyester container for fuel cell cartridges |
US7770745B2 (en) * | 2006-06-19 | 2010-08-10 | Amcor Limited | Wide mouth jar with integral scraper |
EP1997603A1 (en) * | 2007-05-31 | 2008-12-03 | Alliance for business solutions A4BS | Modified hot runner systems for injection blow molding |
US7866496B2 (en) | 2007-09-21 | 2011-01-11 | Stokely-Van Camp, Inc. | Lightweight finish for hot-fill container |
JP5614609B2 (en) * | 2009-08-31 | 2014-10-29 | 株式会社吉野工業所 | Synthetic resin casing and manufacturing method thereof |
US9567128B2 (en) * | 2010-12-09 | 2017-02-14 | Ring Container Technologies | Wide mouth container and method of making the same |
CA2841083C (en) * | 2011-08-01 | 2015-03-24 | Graham Packaging Company Lp | Plastic aerosol container and method of manufacture |
AU2013223355B2 (en) * | 2012-02-23 | 2015-10-01 | Nissei Asb Machine Co., Ltd. | Blow molding method, blow mold, and blow-molded container |
US10737822B2 (en) * | 2015-03-30 | 2020-08-11 | Ring Container Technologies, Llc | Container and method of manufacture |
ES1228596Y (en) * | 2019-03-29 | 2019-07-25 | Partner Local Grup S L | BOTTLE OR CONTAINER WITH CUTTED MOUTH |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE7411960L (en) * | 1974-09-24 | 1976-03-25 | Fabriker As Haustrups | METHOD OF MANUFACTURING CONTAINERS LIKE POLYESTER BOTTLES OR CANS |
FR2320176A2 (en) * | 1975-08-06 | 1977-03-04 | Carnaud Total Interplastic | Producing hollow thermoplastic bodies - by decreasing diameter of preform by drawing axially-expanding to effect uniform biaxial orientation |
SE417592B (en) * | 1978-03-13 | 1981-03-30 | Plm Ab | CONTAINER OF THERMO-PLASTIC PLASTIC MATERIAL WITH STRENGTHS INSIDE THE CONTAINER WALL, AND PROCEDURE FOR THE PREPARATION OF SUCH A CONTAINER |
GB2024087B (en) * | 1978-06-29 | 1982-08-25 | Yoshino Kogyosho Co Ltd | Blow moulding polyester container |
AU514839B2 (en) * | 1979-08-31 | 1981-02-26 | Yoshino Kogyosho Co., Ltd. | Producing saturated polyester resin bottles |
AU549470B2 (en) * | 1979-11-08 | 1986-01-30 | Yoshino Kogyosho Co., Ltd. | Neck orientation |
AU521763B2 (en) * | 1979-11-08 | 1982-04-29 | Yoshino Kogyosho Co., Ltd. | Orienting neck of plastic parison |
US4466845A (en) * | 1980-09-24 | 1984-08-21 | Cosden Technology, Inc. | Methods of making bi-axially oriented, thin-walled, synthetic plastic containers/articles |
JPS6344337Y2 (en) * | 1981-01-29 | 1988-11-17 | ||
JPS57189824A (en) * | 1981-05-19 | 1982-11-22 | Yoshino Kogyosho Co Ltd | Method of strengthening cylindrical mouthpiece of bottle made of polyethylene telephthalate resin |
CA1184717A (en) * | 1981-08-20 | 1985-04-02 | Yoshiaki Hayashi | Blow-molded bottle-shaped container of biaxially oriented polyethylene terephthalate resin and method of molding the same |
US4496064A (en) * | 1981-11-23 | 1985-01-29 | The Continental Group, Inc. | Blow molded container and method of forming the same |
-
1985
- 1985-04-05 US US06/720,504 patent/US4618515A/en not_active Expired - Fee Related
-
1986
- 1986-04-04 AU AU55679/86A patent/AU579720B2/en not_active Ceased
- 1986-04-04 DK DK153686A patent/DK153686A/en not_active Application Discontinuation
- 1986-04-04 JP JP61078054A patent/JPS61293829A/en active Pending
- 1986-04-04 EP EP19860302520 patent/EP0197780A3/en not_active Withdrawn
- 1986-04-04 NO NO861332A patent/NO861332L/en unknown
- 1986-04-04 FI FI861459A patent/FI861459A/en not_active IP Right Cessation
- 1986-04-07 CA CA000505971A patent/CA1266837A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0197780A3 (en) | 1987-01-07 |
AU5567986A (en) | 1986-10-09 |
JPS61293829A (en) | 1986-12-24 |
FI861459A0 (en) | 1986-04-04 |
US4618515A (en) | 1986-10-21 |
FI861459A (en) | 1986-10-06 |
AU579720B2 (en) | 1988-12-08 |
NO861332L (en) | 1986-10-06 |
EP0197780A2 (en) | 1986-10-15 |
DK153686D0 (en) | 1986-04-04 |
DK153686A (en) | 1986-10-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1266837A (en) | Polyester with oriented crystallized thread finish for hot fill applications and method of making same | |
EP0511720B1 (en) | Method for producing a hot fillable, collapse resistant polyester container | |
AU629805B2 (en) | Hot fill container | |
US6555191B1 (en) | Wide mouth blow molded plastic container, method of making same, and preform used therein | |
EP0057504B1 (en) | Container of polyethylene terephthalate or saturated polyester resin | |
CA1304301C (en) | Refillable polyester bottle and preform for forming same | |
US8292102B2 (en) | Container thread design | |
US8308005B2 (en) | Preform and container having debossed support flange | |
US4927680A (en) | Preform and method of forming container therefrom | |
US7918355B2 (en) | Blow-molded container having thread groove | |
US4933135A (en) | Method of making a blow-moulded container from a thermoplastic polyester, in particular pet | |
JPH03197006A (en) | Plastic precursor and its manufacture and plastic container | |
US5648133A (en) | Biaxially oriented crystalline resin container and process of making the same | |
US4590028A (en) | Process for making a multilayered parison of thermoplastic material | |
KR20030081134A (en) | Graded crystallization of container finishes | |
EP0055595B1 (en) | Container of polyethylene terephthalate or saturated polyester resin | |
JPH05200839A (en) | Production of heat and pressure-resistant bottle | |
JPS5892536A (en) | Biaxially stretched plastic bottle | |
GB2212435A (en) | Blow moulded container | |
JPS60189418A (en) | Manufacture of heat resisting polyester bottle | |
JPS6160437A (en) | Heat-resistant plastic bottle | |
JPH0427928B2 (en) | ||
NZ245610A (en) | Hot fill blow moulded container with vacuum deformable panels | |
JPS58153618A (en) | Manufacture of polyester stretched blow molding bottle | |
JPH0656139A (en) | Preform and bottle for biaxial oriented blow molding |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKLA | Lapsed |