WO2007144939A1 - 樹脂製広口容器、及び樹脂製容器の口部の熱結晶化方法 - Google Patents
樹脂製広口容器、及び樹脂製容器の口部の熱結晶化方法 Download PDFInfo
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- WO2007144939A1 WO2007144939A1 PCT/JP2006/311823 JP2006311823W WO2007144939A1 WO 2007144939 A1 WO2007144939 A1 WO 2007144939A1 JP 2006311823 W JP2006311823 W JP 2006311823W WO 2007144939 A1 WO2007144939 A1 WO 2007144939A1
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- WIPO (PCT)
- Prior art keywords
- container
- mouth
- resin
- heat
- wide
- Prior art date
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Classifications
-
- 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
- B65D51/00—Closures not otherwise provided for
- B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
- B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
-
- 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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/0063—After-treatment of articles without altering their shape; Apparatus therefor for changing crystallisation
-
- 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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
-
- 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
- B65D79/00—Kinds or details of packages, not otherwise provided for
- B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
- B65D79/008—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars
- B65D79/0084—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars in the sidewall or shoulder part thereof
-
- 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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
- B29C2071/022—Annealing
-
- 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
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/003—PET, i.e. poylethylene terephthalate
-
- 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
- B29K2067/006—PBT, i.e. polybutylene terephthalate
Definitions
- the present invention provides a resin wide-mouthed container that ensures high sealing performance and heat resistance during high-temperature sterilization, and has improved internal pressure change absorption performance of the container, and such a resin wide-mouthed container.
- the present invention relates to a thermal crystallization method for a mouth portion of a resin container that can be suitably used for the above.
- a container suitable for taking out a small amount of contents such as a jam, and the like
- a container body made of glass with a large opening (outlet) diameter to facilitate the removal of the contents
- a wide-mouth container combined with a metal cap is generally used.
- containers made of thermoplastic resins such as polyethylene terephthalate have been widely used in various applications, and various containers have been made into resin.
- Patent Document 1 the wide-mouthed container as described above is also required to be replaced with a light-weight and hard-to-break resin container.
- Patent Document 1 Japanese Utility Model Publication No. 63-88912
- the cap is also made of resin and its shrinkage rate is matched with the shrinkage rate of the container body, it is possible to ensure sealing performance, but in addition to sealing performance, oxygen barrier properties are required.
- the oxygen barrier property of the cap greatly affects. For this reason, selection of the cap material is limited, and it becomes difficult to ensure oxygen barrier properties. If a multi-layered cap provided with an oxygen barrier layer, an oxygen absorption layer, and the like is used, the oxygen barrier property cannot be secured. However, such a cap is expensive and has a problem of cost.
- the resin at the opening of the container body is used to increase its heat resistance and prevent deformation during high temperature sterilization.
- heat crystallization is generally performed, heat resistance can be improved by heat crystallization of the resin in the opening, while heat resistance can be increased. There is a problem of being inferior.
- Patent Document 1 the opening edge portion is made an uncrystallized portion, the mouth tube portion is crystallized, and an aluminum foil is attached to the opening end surface while maintaining the high strength of the mouth tube portion.
- a wide-mouth container made of polyethylene terephthalate resin that can be thermally bonded at a low temperature is disclosed.
- the opening edge portion of the mouth tube portion is covered with a cylindrical shielding tube, and the heat is applied. The heat from the filter is not directly transferred to the opening edge part, and the other part of the mouth tube part is thermally crystallized except for the opening edge part.
- the present invention has been made in view of the above circumstances, and when replacing a conventional wide-mouthed container in which a metal cap is combined with a glass container body with a resin container, high sealing performance, A resin wide-mouthed container that secures heat resistance during high-temperature sterilization and improves the internal pressure change absorption performance of the container, and a resin-made container that can be suitably used to obtain such a resin wide-mouthed container It is an object of the present invention to provide a method for thermal crystallization of the mouth of the above.
- a resin wide-mouthed container includes a container body having a mouth part, a body part, and a bottom part, and a lid attached to the mouth part, and at least the container body is made of a thermoplastic resin.
- the body portion has an internal pressure change absorption panel, and the film material is heat-sealed in the mouth portion, whereby the opening portion of the container body is formed by the film material.
- the structure is hermetically sealed.
- the resin wide-mouthed container according to the present invention can be configured such that the lid is attached to the mouth so that a gap is formed between the lid and the film material.
- the film material can be bent outward in the lid to absorb the increase in pressure.
- the resin wide-mouthed container according to the present invention can be configured such that at least the film material has an oxygen barrier property.
- the resin wide-mouthed container according to the present invention includes the film material on the mouth portion thermally crystallized by removing the upper end surface while making the upper end surface of the mouth portion an amorphous portion. Can be heat sealed.
- the resin wide-mouthed container according to the present invention has a convex portion formed on the upper end surface of the mouth portion as an amorphous portion, and the mouth portion thermally crystallized except for the convex portion,
- the film material may be heat sealed.
- the seal width with the film material can be adjusted as appropriate so that the seal portion at the upper end surface of the mouth does not protrude in the container radial direction, and the appearance after peeling is good. It is possible to maintain high sealing performance when re-sealing with a lid that is not just laid.
- the resin wide-mouthed container according to the present invention may have a configuration in which the lid body is attached to the mouth portion so as to be resealable.
- the container can be resealed after opening, and can be suitably used as a container for long-term storage of contents to be taken out and used in small amounts.
- the resin wide-mouthed container according to the present invention may have a configuration in which an inner surface of the top plate of the lid has an annular protrusion that contacts the upper end surface of the mouth portion through the film material.
- the resin wide-mouthed container according to the present invention has a configuration in which an inner surface of the top plate of the lid has an annular protrusion positioned closer to the inner side of the container than the inner peripheral edge of the mouth. Can do. With such a configuration, it is possible to effectively avoid peeling of the film material from the inner side of the container and prevent the contents from entering between the upper end surface of the mouth portion and the film material. it can.
- the top of the container or the preform of the container is reversed and the inner surface of the container or the preform of the container is used.
- the contact portion with the pedestal is selectively in an amorphous state.
- a shielding plate is provided in a portion where it is desired to suppress the progress of thermal crystallization so that heat from the heat source is not directly covered. It can be a method.
- the thermal crystallization method for the mouth portion of the resin container according to the present invention may be a method in which the inner surface of the container or the preform of the container is supported by the jig. With such a method, it is possible to more effectively suppress the progress of the thermal crystallization in the portion where the thermal crystallization is not desired due to the heat dissipation effect of the jig.
- the end portion on the pedestal side of the jig is allowed to proceed with thermal crystallization with a portion where progress of thermal crystallization is desired to be suppressed. It can be a method of being located at the boundary with the desired part.
- the end portion on the pedestal side of the shielding plate and the end portion on the pedestal side of the jig are on substantially the same horizontal plane. It is possible to use a method located in
- the present invention it is possible to ensure high sealing performance and heat resistance during high-temperature sterilization, to improve the internal pressure change absorption performance of the container, and to easily provide oxygen barrier properties. Therefore, the conventional glass wide-mouthed container can be replaced with a resin container that is light in weight and hard to break.
- FIG. 1 is a front view showing an embodiment of a resin wide-mouthed container according to the present invention.
- FIG. 2 is a cross-sectional view taken along the line AA in FIG.
- FIG. 3 is an enlarged cross-sectional view of a main part showing an embodiment of a resin wide-mouthed container according to the present invention.
- 4] A front view showing an outline of a preform used for forming a container body.
- FIG. 5] is an explanatory view showing an amorphous part formed on the upper end surface side of the mouth part.
- FIG. 6 is an explanatory view showing an embodiment of a thermal crystallization method for the mouth of a resin container according to the present invention.
- FIG. 1 shows an embodiment of a resin wide-mouthed container according to the present invention
- FIG. FIG. 2 is a front view of the resin wide-mouthed container according to the embodiment
- FIG. 2 is a cross-sectional view taken along the line AA in FIG.
- FIG. 3 is an enlarged cross-sectional view of a main part showing a part surrounded by a chain line in FIG.
- a container 1 shown in FIG. 1 has a container shape generally referred to as a wide-mouth container, and is attached to a container body 2 having a mouth portion 3, a body portion 4, and a bottom portion 5, and a mouth portion 3.
- the opening diameter of the mouth portion 3 is increased (for example, the diameter is 40 mm or more).
- the lid 6 can be configured to be resealable even after opening by attaching to the mouth 3 of the container body 2 by screw fitting.
- the material is not particularly limited, and a known metal cap that has been used for this type of wide-mouth container may be used as it is.
- a thermoplastic resin such as polypropylene or polyethylene may be formed into a predetermined shape, or may be formed of a composite material of these resins and a metal or a film material.
- the specific configuration of the lid body 6 is not particularly limited, and may be a multilayer configuration including an oxygen layer and a rear layer as necessary.
- the container main body 2 is made of a thermoplastic resin, and the container main body 2 is, for example, a bottomed cylindrical preform 10 manufactured by known injection molding or extrusion molding. Can be manufactured by stretch blow molding (see Fig. 4).
- thermoplastic resin constituting the container body 2 any resin can be used as long as it can be molded into a desired container shape by stretch blow molding or the like.
- polyethylene terephthalate, polyethylene Preferred are thermoplastic polyesters such as isophthalate, polybutylene terephthalate, polyethylene naphthalate, polycarbonate, polyarylate, polylactic acid or copolymers thereof, and those blended with these resins or other resins, especially polyethylene.
- Ethylene terephthalate thermoplastic polyesters such as terephthalate are preferably used.
- acrylonitrile resin, polypropylene, propylene monoethylene copolymer, polyethylene and the like can also be used.
- Ethylene terephthalate-based thermoplastic polyester is composed of most of ester repeating units (eg, Eg to 70 mole 0/0 or more) to account for ethylene terephthalate units, a glass transition point (Tg) of 5 0 to 90 ° C, the melting point (Tm) is preferably those in the range of 200 ⁇ 275 ° C.
- ester repeating units eg, Eg to 70 mole 0/0 or more
- Tg glass transition point
- Tm melting point
- polyethylene terephthalate As an ethylene terephthalate thermoplastic polyester, polyethylene terephthalate (PET) is particularly superior in terms of pressure resistance, heat resistance, heat pressure resistance, etc.
- PET polyethylene terephthalate
- cyclohexanedicarboxylic acid, isophthalic acid, naphthalene Copolyesters containing dibasic acids such as dicarboxylic acid and diols such as propylene glycol, 1,4-butanediol, and cyclohexanedimethanol can also be used.
- the container body 2 can be composed of two or more thermoplastic polyester layers in addition to the case where it is composed of a single layer (one layer) of thermoplastic polyester layer. Furthermore, an intermediate layer sealed between an inner layer and an outer layer composed of two or more thermoplastic polyester layers can be provided, and the intermediate layer can be an oxygen barrier layer or an oxygen absorption layer. Thus, by providing an oxygen barrier layer and an oxygen absorption layer, the permeation of oxygen from the outside into the container is suppressed, and alteration of the contents M in the container by oxygen from the outside is prevented. Power S can be.
- any layer can be used as long as it absorbs oxygen and prevents permeation of oxygen, but a combination of an oxidizable organic component and a transition metal catalyst, or substantially oxidized. It is preferred to use a combination of non-gas barrier resin, oxidizable organic component and transition metal catalyst.
- an internal pressure change absorption panel 4a is formed on the body 4 of the container body 2.
- the internal pressure change absorption panel 4a is gently deformed inward of the container 1 to absorb the decrease in pressure, and when the internal pressure of the container 1 increases, In the example shown in the figure, it absorbs the change in the internal pressure of the container 1 and gradually reduces the load acting on the container 1 as the internal pressure changes.
- a six-sided internal pressure change absorption panel 4a is formed along the circumferential direction of the body portion 4.
- the container 1 in the present embodiment provided with such a container body 2 is filled with the contents M, and then heat-sealed the film material 7 on the upper end surface of the mouth 3 to seal the opening, By attaching the lid 6 to the mouth 3, the contents M are filled and sealed with high sealing performance.
- the power to do S Even if the mouth part 3 contracts during high temperature sterilization and a gap is formed between the lid 6 and the film member 7 heat-sealed to the mouth part 3, the sealing performance is ensured, Therefore, the sealing performance of the container 1 is not impaired.
- the contents M are filled in the vicinity of the mouth 3 while leaving the headspace S, but the headspace S is increased due to the larger opening diameter of the mouth 3. Is increasing in the container (see Figure 1).
- the container is depressurized after being cooled. In addition, the pressure in the container increases.
- the film material 7 that is heat-sealed to the mouth portion 3 and seals the container 1 is preferably a film material having an oxygen-nore property, and a container body 2 having an oxygen barrier property.
- a film material having an oxygen-nore property preferably a film material having an oxygen-nore property
- a container body 2 having an oxygen barrier property By combining with, high oxygen barrier properties can be ensured regardless of whether or not the lid body 6 has an oxygen-nore property.
- a film material 7 for example, a film having a multilayer structure laminated in order through a base material layer, an intermediate layer (barrier layer), a sealant layer, and an adhesive layer can be used.
- Specific configurations include required tensile strength, drop impact resistance, pinhole resistance, content resistance, and high temperature heat sterilization such as hot water sterilization and retort sterilization. Can be appropriately selected in consideration of heat resistance.
- the base material layer it is preferable to use a film excellent in mechanical properties such as tensile strength, impact strength, and pinhole resistance.
- a polyester resin such as polyethylene terephthalate is used.
- a biaxially stretched film made of polyamide resin such as nylon or polyolefin resin such as polypropylene can be used as a base film.
- a metal such as aluminum, an inorganic oxide such as alumina (aluminum oxide) or silica (cyanide oxide), or the like can be deposited on such a base film.
- a barrier organic material such as polyacrylic acid, or in the base film, an oxygen-absorbing resin containing an oxidizable polymer or the like, an oxygen-absorbing agent comprising a reducing metal compound, etc.
- barrier properties may be imparted to the base film itself if necessary.
- a synthetic resin film having a barrier property against various gases and water vapor can be used.
- synthetic resin films include ethylene-vinyl alcohol copolymer films; vinylidene chloride copolymer films; metaxylenediamine (
- MXDA crystalline polyamide film obtained from polycondensation reaction of adipic acid (nylon M XD6); acrylonitrile copolymer film; polyglycolic acid and its copolymer film; polyglycolic acid film; clay nanocomposite synthesis Resin film; Inorganic film deposition film; Barrier organic material coating film such as polyvinylidene chloride and polyacrylic acid; Clay-based nanocomposite material coating film based on thermosetting resin such as phenol resin, epoxy resin and polyimide resin Etc.
- adipic acid nylon M XD6
- acrylonitrile copolymer film polyglycolic acid and its copolymer film
- polyglycolic acid film clay nanocomposite synthesis Resin film
- Inorganic film deposition film Barrier organic material coating film such as polyvinylidene chloride and polyacrylic acid
- Clay-based nanocomposite material coating film based on thermosetting resin such as phenol resin, epoxy resin and polyimide resin Et
- an oxygen-absorbing resin containing an oxidizing polymer or the like, an oxygen absorbent composed of a reducing metal compound, or the like may be appropriately blended.
- metal foil including alloy foil
- aluminum foil or steel foil can be used as another material for imparting barrier properties.
- the sealant layer has heat sealability (at least it must be capable of melting 'diffusion' and resolidification at a temperature lower than the melting point of the material constituting the base material layer), heat seal strength, and heat resistance ( Strength), content resistance, hygiene, etc. are required.
- Synthetic resin materials having heat sealing properties applicable to such sealant layers include, for example, low density polyethylene, linear low density polyethylene (Chidarer type (multisite catalyst), meta-mouth type (single noresite catalyst).
- Ethylene ⁇ -olefin copolymer ethylene-modified carboxylic acid grafted with ethylene unsaturated carboxylic acid or its anhydride, medium density polyethylene, high density polyethylene, polypropylene, propylene monoethylene copolymer, polybutene 1, polymethylpentene, ethylene-butyl acetate copolymer, ethylene monoacrylic acid copolymer, ethylene monomethacrylic acid copolymer, ethylene monomethacrylic acid copolymer, etc.
- Ion-crosslinked olefin fin copolymer ionomer
- Polyolefin resins such as polymers (cyclic olefin copolymers); Aromatic bur copolymers such as polystyrene and styrene-butadiene copolymer; Halogenated bur resins such as polysalt butadiene and polyvinylidene chloride; Atallononitrile Acrylonitrile copolymers such as styrene copolymers, acrylonitrile-butadiene-styrene copolymers; polylactic acid resins (including polymesolactide-containing systems); relatively low melting point polyester resins such as polybutylene terephthalate, etc. Is mentioned. These resins may be used alone or as a blend of several as required.
- polyethylene terephthalate is polybutylene terephthalate, a polyvalent carboxylic acid component such as isophthalic acid or adipic acid, and 1,4 butanediol or 1,4,4. It is preferable to use a copolymerized polyester modified with a polyhydric alcohol component such as cyclohexanedimethanol. Further, by blending such a copolyester with an incompatible synthetic resin material such as polyethylene or polypropylene, it is possible to impart easy peelability to the sealant layer.
- Materials for forming an adhesive layer for adhering these layers include polyether-based polyurethane resins, polyester-based polyurethane resins and other polyurethane resins, polyester-based resins, epoxy-based resins, acrylic resins, polar Examples include olefin-based resins with introduced groups.
- the synthetic resin film for forming each layer is an ordinary method such as a casting method, a die method, a calendar method or an inflation method. You can get more power S.
- the film material 7 can be obtained by a conventional method such as a dry lamination method of a pre-formed film, a sand germany lamination method using a molten resin, a laminate coating method, or a melt coextrusion method.
- the surface in contact with the adhesive layer of each layer is subjected to corona discharge treatment, flame treatment (flame treatment), ultraviolet treatment, Surface modification treatment using ozone treatment, primer coating treatment (coating with alkyl titanate, polyethyleneimine, silane coupling agent, isocyanate compound, polyurethane compound, etc.) can be performed.
- a projection 6 a that contacts the upper end surface of the mouth portion 3 via the film material 7 is formed annularly along the upper end surface of the mouth portion 3 on the inner surface of the top plate of the lid body 6. It is preferable that the film material 7 be pressed against the upper end surface of the mouth portion 3 by the annular protrusion 6a.
- the sealing strength of the film material 7 is filled and sealed with the content M.
- the sealing strength Prioritizing easy peelability without the need for consideration of later high temperature sterilization or peeling in the distribution process, for example, it can be set as appropriate in the range of 5 to 25 N / I 5 mm, especially 15 N / 15 mm or less By doing so, easy peelability of the film material 7 is realizable.
- the seal strength can be selected within the appropriate legal range defined as 23 NZl5 mm or more according to related laws and regulations.
- the resin of the mouth 3 is used.
- heat crystallization can be performed, if the resin in the mouth 3 is heat crystallized, the heat seal temperature when the film material 7 is heat sealed to the mouth 3 must be increased. It is inferior to sex.
- the heat sealability of the mouth part 3 can be improved, and the sealing ability of the container 1 can be further enhanced, and at the same time, no peeling marks can be left on the peeling surface of the film material 7. .
- the entire upper end surface of the mouth portion 3 is formed on the amorphous portion 3a.
- the width of the convex part 8 to be the amorphous part 3a is arbitrarily set, and the seal width with the film material 7 is appropriately adjusted. It is possible to prevent melt deformation and protrusion in the radial direction of the container, thereby maintaining high sealing performance when the lid 6 is re-sealed with only good aesthetics after peeling.
- the seal width is preferably set in the range of a force of 0.5 to 5 mm depending on the thickness of the mouth portion 3.
- the mouth portion is formed as follows. Thermal crystal in part 3 It is only necessary to apply a conversion process.
- the thermal crystallization treatment may be applied to the preform 10 after the preform 10 is molded into the desired container shape. Whichever case is subjected to the thermal crystallization treatment, the treatment can be carried out according to the same steps.
- the top of the preform 10 is reversed and the inner surface of the preform 10 is attached to the jig. 11 is supported on the support portion 13 and placed on the pedestal 12 with the upper end surface of the mouth portion 3 in contact.
- the jig 11 can be formed of a metal material having good thermal conductivity such as stainless steel, aluminum, and steel.
- the pedestal 12 is formed integrally with the jig 11, but the pedestal 12 and the jig 11 may be configured separately if necessary.
- the distance from the heat source 15 to the mouth 3 takes into consideration the range (angle) in which heat is generated from the heat source 15, the amount of heat (the angular distribution of the amount of heat), the shape and size of the preform 10 (mouth 3), etc. Determined.
- the heat source 15 for example, a carbon dioxide laser, a near infrared heater, a far infrared heater, a warm air heater, or the like can be used.
- a carbon dioxide laser is used as the heat source 15, the power that makes it easy to partially heat the mouth 3 by adjusting the laser spot diameter, output, etc. S, infrared heaters, hot air heaters, etc.
- the shielding plate 14 as shown in the figure, it is necessary to suppress the progress of thermal crystallization (stretched during molding). It is possible to prevent the heat from the heat source 15 from being directly applied to the part).
- the mouth 3 is heated in a state where the upper end surface side of the mouth portion 3 is in contact with the pedestal 12, but at this time, the upper end surface side of the mouth portion 3 is heated.
- the heat transferred to is highly conductive Heat is radiated from the contact surface of the base 12 made of a metal material.
- the resin on the upper end surface side of the mouth 3 can be suppressed to a temperature at which thermal crystallization does not proceed.
- 3 can be selectively thermally crystallized in the mouth 3 while making the upper end surface side of the amorphous portion 3a.
- the inner surface of the preform 10 is supported by the surface by forming the support portion 13 of the jig 11 in substantially the same shape as the inner surface of the preform 10. Even if it is not blocked by the shielding plate 14 or is transmitted to the part where the thermal crystallization is to be suppressed due to the thermal conduction of the resin itself, the contact of the support part 13 made of a metal material with good thermal conductivity is possible. Heat is dissipated from the surface.
- the portion to be thermally crystallized (mouth 3) is indicated by a halftone dot, and the other portion, that is, the cross section of the portion that is stretched when the container body 2 is formed is hatched. Omitted.
- the support portion 13 formed on the jig 11 has an end portion on the base 12 side, as shown in FIG. 6, and a portion where the progress of thermal crystallization is desired to be suppressed and the thermal crystallization is desired to proceed.
- This is preferably located at the boundary with the mouth 3, so that the boundary between the portion where thermal crystallization is suppressed and the portion where thermal crystallization is suppressed can be clearly formed.
- the shielding plate 14 as described above is provided, and the end portion of the shielding plate on the pedestal 12 side and the end portion of the support portion 13 on the pedestal 12 side are positioned on substantially the same horizontal plane. By appropriately adjusting the installation position, the boundary can be formed more clearly.
- the support portion 13 is formed in the same cross-sectional shape as the inner surface of the preform 10, but the end portion on the base 12 side of the support portion 13 is The shape may be such that it is located at the boundary between the portion where it is desired to suppress the progress of thermal crystallization and the mouth portion 3 where thermal crystallization is desired to proceed, and at least its vicinity is supported by a surface.
- the jig 11 can be provided with a temperature adjustment function when the mouth portion 3 is crystallized.
- the temperature adjustment function may be achieved by forming a heat radiation fin in the jig 11 or circulating cooling water inside the jig 11.
- the degree of crystallinity of the heat seal portion on the upper end surface side of the mouth portion 3 is appropriately controlled within a range where the heat sealability is not impaired. Specifically, it is 20% or less. More preferably, it is 10% or less.
- the crystallinity of the resin in the mouth 3 can be calculated from the following equation (1) by, for example, the density method.
- kl intercept obtained from a calibration curve with the full width at half maximum as the vertical axis and the density as the horizontal axis
- k2 Gradient obtained from a calibration curve with the full width at half maximum as the vertical axis and the density as the horizontal axis
- the present invention can provide a resin wide-mouthed container that can replace the conventional glass wide-mouthed container.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Packages (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06766635A EP2028110A4 (en) | 2006-06-13 | 2006-06-13 | HIGH OPENING RESIN CONTAINER AND METHOD FOR THERMALLY CRYSTALLIZING THE OPENING PART OF A RESIN CONTAINER |
US12/226,925 US20090078669A1 (en) | 2006-06-13 | 2006-06-13 | Wide-Mouth Plastic Container and Method for Crystallization of Mouth Portion of Plastics Container |
CN2006800549900A CN101466604B (zh) | 2006-06-13 | 2006-06-13 | 树脂制广口容器、及树脂制容器的口部的热结晶化方法 |
PCT/JP2006/311823 WO2007144939A1 (ja) | 2006-06-13 | 2006-06-13 | 樹脂製広口容器、及び樹脂製容器の口部の熱結晶化方法 |
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Application Number | Priority Date | Filing Date | Title |
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PCT/JP2006/311823 WO2007144939A1 (ja) | 2006-06-13 | 2006-06-13 | 樹脂製広口容器、及び樹脂製容器の口部の熱結晶化方法 |
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WO2007144939A1 true WO2007144939A1 (ja) | 2007-12-21 |
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PCT/JP2006/311823 WO2007144939A1 (ja) | 2006-06-13 | 2006-06-13 | 樹脂製広口容器、及び樹脂製容器の口部の熱結晶化方法 |
Country Status (4)
Country | Link |
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US (1) | US20090078669A1 (ja) |
EP (1) | EP2028110A4 (ja) |
CN (1) | CN101466604B (ja) |
WO (1) | WO2007144939A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US20100280152A1 (en) * | 2009-04-29 | 2010-11-04 | Spartech Corporation | Thermoformable and RF Sealable Plastic Packaging Material |
FI126981B (fi) | 2010-04-30 | 2017-09-15 | Stora Enso Oyj | Menetelmät pakkausmateriaalin kuumasaumautuvuuden parantamiseksi sekä kuumasaumatun astian tai pakkauksen valmistamiseksi |
EP2569251A4 (en) * | 2010-05-14 | 2013-12-04 | Aquasolix Corp | METHOD AND DEVICE FOR SOLAR ENERGY BASED WATER DISINFECTION |
WO2012097248A1 (en) * | 2011-01-14 | 2012-07-19 | The Procter & Gamble Company | A blow molded container |
US9994368B2 (en) | 2012-10-30 | 2018-06-12 | The Procter & Gamble Company | Closure for a container |
EP3792034A4 (en) * | 2018-05-10 | 2022-01-26 | Suntory Holdings Limited | METHOD OF APPLYING A COATING TO A PLASTIC BOTTLE GOB |
US11628998B2 (en) * | 2018-12-13 | 2023-04-18 | Johnson & Johnson Vision Care, Inc. | Ultraviolet light inhibiting contact lens package |
CN114341007B (zh) * | 2019-09-12 | 2024-04-30 | Sabic环球技术有限责任公司 | 容器组装件、容器组装件的封闭盖、容器组装件的容器、制造容器组装件的方法 |
USD923748S1 (en) * | 2019-12-20 | 2021-06-29 | Chun-Ling Lo | Dry battery sprinkling bottle |
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JPS6388912U (ja) | 1986-11-28 | 1988-06-09 | ||
JPH08198230A (ja) * | 1995-01-17 | 1996-08-06 | Toppan Printing Co Ltd | 減圧吸収容器 |
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WO1990003886A1 (en) * | 1988-10-12 | 1990-04-19 | Toyo Seikan Kaisha, Ltd. | Heat-sealable cap for polyester vessel and vessels capped with same |
JPH11235751A (ja) * | 1998-02-20 | 1999-08-31 | Ueno Hiroshi | プラスチック成形体の結晶化方法 |
US20050205575A1 (en) * | 2001-12-28 | 2005-09-22 | Toyo Seikan Kasha , Ltd. | Container sealing structure, container with the sealing structure, and method of manufacturing the sealing structure |
US6554146B1 (en) * | 2002-01-17 | 2003-04-29 | Owens-Brockway Plastic Products Inc. | Single serve plastic container and package incorporating same |
JP3918613B2 (ja) * | 2002-04-05 | 2007-05-23 | 東洋製罐株式会社 | 耐熱性ポリエステル容器及びその製造方法 |
JP3870867B2 (ja) * | 2002-07-19 | 2007-01-24 | 東洋製罐株式会社 | 熱可塑性樹脂容器の製造方法 |
JP4276823B2 (ja) * | 2002-07-31 | 2009-06-10 | 株式会社フロンティア | 耐熱性を有するプラスチック製のカップ状容器およびその一次成形品 |
FR2862290B1 (fr) * | 2003-11-17 | 2006-09-08 | Tetra Laval Holdings & Finance | Dispositif de bouchage d'un col de recipient et recipient muni d'un tel dispositif |
US20070215570A1 (en) * | 2003-11-17 | 2007-09-20 | Rachel Prioul | Container Neck Closure Device and Container Equipped With One Such Device |
WO2005070782A1 (en) * | 2004-01-16 | 2005-08-04 | Heyn William M | Overcap for a container |
JP4561519B2 (ja) * | 2004-07-27 | 2010-10-13 | 東洋製罐株式会社 | フランジ部の加熱処理方法、フランジ部の加熱処理装置及びフランジ付き樹脂製容器の製造方法 |
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2006
- 2006-06-13 CN CN2006800549900A patent/CN101466604B/zh active Active
- 2006-06-13 WO PCT/JP2006/311823 patent/WO2007144939A1/ja active Application Filing
- 2006-06-13 US US12/226,925 patent/US20090078669A1/en not_active Abandoned
- 2006-06-13 EP EP06766635A patent/EP2028110A4/en not_active Withdrawn
Patent Citations (2)
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JPS6388912U (ja) | 1986-11-28 | 1988-06-09 | ||
JPH08198230A (ja) * | 1995-01-17 | 1996-08-06 | Toppan Printing Co Ltd | 減圧吸収容器 |
Non-Patent Citations (1)
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See also references of EP2028110A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN101466604A (zh) | 2009-06-24 |
EP2028110A4 (en) | 2012-04-11 |
CN101466604B (zh) | 2011-08-31 |
US20090078669A1 (en) | 2009-03-26 |
EP2028110A1 (en) | 2009-02-25 |
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