CN112109981A - Package and method for manufacturing same - Google Patents
Package and method for manufacturing same Download PDFInfo
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- CN112109981A CN112109981A CN202010552203.7A CN202010552203A CN112109981A CN 112109981 A CN112109981 A CN 112109981A CN 202010552203 A CN202010552203 A CN 202010552203A CN 112109981 A CN112109981 A CN 112109981A
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- China
- Prior art keywords
- region
- film
- package
- package according
- radially outward
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- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 47
- 239000011347 resin Substances 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 238000003466 welding Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 12
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 4
- 239000005001 laminate film Substances 0.000 claims 2
- 239000012528 membrane Substances 0.000 abstract description 8
- 239000002344 surface layer Substances 0.000 abstract description 4
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 13
- 239000005033 polyvinylidene chloride Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 10
- -1 polyethylene terephthalate Polymers 0.000 description 10
- 239000000178 monomer Substances 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- 239000012760 heat stabilizer Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 4
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 229920001519 homopolymer Polymers 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 239000001530 fumaric acid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 235000013580 sausages Nutrition 0.000 description 2
- 238000010557 suspension polymerization reaction Methods 0.000 description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 description 2
- 239000008158 vegetable oil Substances 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 241000251468 Actinopterygii Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 150000008360 acrylonitriles Chemical class 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229920003145 methacrylic acid copolymer Polymers 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004209 oxidized polyethylene wax Substances 0.000 description 1
- 235000013873 oxidized polyethylene wax Nutrition 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010558 suspension polymerization method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
- B65D75/06—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes
- B65D75/12—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes with the ends of the tube closed by flattening and heat-sealing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B5/00—Packaging individual articles in containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, jars
- B65B5/02—Machines characterised by incorporation of means for making the containers or receptacles
- B65B5/022—Machines characterised by incorporation of means for making the containers or receptacles for making bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B69/00—Unpacking of articles or materials, not otherwise provided for
- B65B69/0033—Unpacking of articles or materials, not otherwise provided for by cutting
-
- 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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Package Closures (AREA)
Abstract
The present invention relates to a package and a method for manufacturing the same. The present invention addresses the problem of reducing the possibility of a film having a surface layer portion peeling off and failing to open a package when a sealing portion of a cylindrical package formed by a resin film is cut and opened. A cylindrical package (1) in the form of an envelope pouch has a seal part (10), and the seal part (10) is a first region (P) of a laminated film (P) formed by overlapping two resin film sheets (F)1) And a second region (P)2) Are respectively arranged at the radial outer side and the radial inner side and are sealed in an overlapped state, wherein the sealing part (10) is a first area (P) which is arranged at the radial outer side1) Two films (F)1A,F1B) And is configured in radial directionA second region (P) to the inner side2) Two films (F)2A,F2B) A radially outer membrane (F) of2A) And welding the components together.
Description
Technical Field
The present invention relates to a package and a method for manufacturing the same.
Background
Various proposals have been made on a cylindrical package formed of a resin film for packaging a content such as a sausage. For example, the following techniques are proposed: the inner surfaces of both edge portions of a film wound in a cylindrical shape are joined to each other in a palm-like state, thereby forming a cylindrical outer skin portion and a seal portion protruding radially outward from the outer skin portion and extending in a longitudinal direction, and the seal portion is laid flat and joined together with the outer skin portion by welding, thereby forming a cylindrical package (see patent document 1). In recent years, a technique has been proposed in which a seal portion formed by joining both edge portions of a film is formed of a specific material to achieve both characteristics of easy-opening property and retort resistance (see patent document 2).
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 1-139356
Patent document 1: japanese patent laid-open publication No. 2015-164860
Disclosure of Invention
Problems to be solved by the invention
In addition, in the techniques described in patent documents 1 and 2, so-called high-frequency welding is sometimes used in which welding is performed by sandwiching a portion to be sealed between electrodes and applying an electric field to heat the portion. When such high-frequency welding is employed, when the sealed portion is cut to open the package, only the surface layer portion (the portion located on the outermost side in the radial direction) of the film may be peeled, and the opening may fail.
The present invention has been made in view of the above circumstances, and an object thereof is to reduce the possibility of a failure in opening due to peeling of a surface layer portion of a film when a sealing portion of a cylindrical package formed by resin film formation is cut and opened.
Means for solving the problems
In order to achieve the above object, a package according to the present invention is a tubular package in the form of an envelope bag having a seal portion formed by arranging a first region and a second region of two laminated films, each of which is formed by laminating two resin films, on the radially outer side and the radially inner side, respectively, and sealing the first region and the second region in an overlapped state, wherein the seal portion is formed by welding the two films forming the first region arranged on the radially outer side and one film forming the radially outer side of the two films forming the second region arranged on the radially inner side.
The method for manufacturing a package according to the present invention includes the steps of: a first step of forming a tubular body in the form of an envelope by arranging and overlapping a first region and a second region of a laminated film, which is formed by laminating two resin films, on the radially outer side and the radially inner side, respectively; and a second step of forming a package having a seal portion by sandwiching the first region and the second region overlapped with each other in the first step between an outer electrode disposed on the radially outer side and an inner electrode disposed on the radially inner side and sealing the first region and the second region by high-frequency dielectric heating, wherein the second step is performed by welding the two films constituting the first region disposed on the radially outer side to the one film constituting the second region disposed on the radially inner side, the one film being positioned on the radially outer side, thereby forming the seal portion.
In the case of adopting this configuration and method, the seal portion may be formed by welding the two sheets of film constituting the first region disposed radially outside the cylindrical body in the form of an envelope bag to the one sheet of film located radially outside of the two sheets of film constituting the second region disposed radially inside the cylindrical body. Thus, when the sealed portion is cut to open the package, the film positioned radially outward and the film positioned radially inward of the two films constituting the first region arranged radially outward can be prevented from peeling. As a result, the possibility of unsealing failure can be reduced.
In the package and the method for producing the same of the present invention, a vinylidene chloride film having a thickness of 15 to 25 μm can be used as a resin film.
In the manufacturing method of the present invention, in the second step, the high-frequency dielectric heating may be performed in a state in which the object to be sandwiched, which is not sealed by the high-frequency dielectric heating, is sandwiched between the first region disposed radially outward and the external electrode. In this case, a sandwich having a thickness of 10 to 300 μm may be used.
In the package of the present invention, a region of the laminated film having a predetermined width from an outermost end portion of an edge portion adjacent to the first region disposed radially outward may be a non-sealed portion, and at least one row of through holes disposed at a predetermined interval in a longitudinal direction may be formed in the non-sealed portion. In this case, the region having a width of 4 to 8mm from the outermost end of the edge portion may be used as the non-sealing portion, and the through holes may be arranged at intervals of 3 to 30mm in the longitudinal direction.
In the manufacturing method of the present invention, in the second step, a region of the laminated film having a predetermined width from an extreme end portion of the edge portion close to the first region disposed radially outward may be used as the non-sealing portion. The method may further include a third step of forming at least one row of through holes arranged at a predetermined interval in a longitudinal direction in a portion of the laminated film corresponding to the non-sealing portion. In this case, the region having a width of 4 to 8mm from the outermost end of the edge portion may be used as the non-sealing portion, and the through holes may be arranged at intervals of 3 to 30mm in the longitudinal direction.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, when the sealed portion of the cylindrical package formed of the resin film is cut and opened, the possibility of the surface layer portion of the film peeling off and the opening failure can be reduced.
Drawings
Fig. 1 is a sectional view of a package according to an embodiment of the present invention.
Fig. 2 is a plan view of the package according to the embodiment of the present invention.
Fig. 3 is an enlarged sectional view of a seal portion (portion III in fig. 1) of the package according to the embodiment of the present invention.
Fig. 4 is an explanatory view for explaining a method of manufacturing a package according to the embodiment of the present invention.
Description of the symbols
1 … packaging body
10 … sealing part
20 … non-sealing part
30 … through hole
100 … sandwich
F … resin film
F1A·F1B… form two sheets of film in a first region
F2A·F2B… form the two sheets of film in the second region
P … laminated film
P1… first region
P2… second region
PE1… edge portion proximate to the first region
PA… is formed in a region having a predetermined width from the extreme end of the edge portion close to the first region
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings. The following embodiments are merely suitable application examples, and the scope of application of the present invention is not limited to these.
First, the structure of the package 1 according to the embodiment of the present invention will be described with reference to fig. 1 to 3. As shown in fig. 1, a package 1 of the present embodiment is a cylindrical package in the form of an envelope bag having a seal portion 10, and the seal portion 10 is a first region P of a laminated film P formed by overlapping two resin film sheets F1And a second region P2Respectively arranged at the radial outer side and the radial inner side and sealed in an overlapped state.
In the present embodiment, as shown in fig. 3 and the like, the first region P is a laminated film P1Using a slave laminated film P having an edge portion PE1Is slightly (width W) at the extreme end1Amount of) as a second region P of the laminated film P2Using the other edge part P of the slave laminated film PE2Is slightly (width W) at the extreme end2Amount of) is greater than a predetermined width. Namely, the first region P1One edge portion P of the laminated film P is not includedE1The region near the edge portion of (1), a second region P2The other edge part P of the laminated film P is not includedE2In the vicinity of the edge portion.
Examples of the resin material constituting the resin film F include polyvinylidene chloride resin, polyvinyl chloride resin, polyester resin (polyethylene terephthalate, etc.), polyamide resin (nylon-6, etc.), polyolefin resin (polyethylene, polypropylene, etc.), and the like. Among these resin materials, the resin film F is preferably formed of a polyvinylidene chloride resin from the viewpoint of oxygen barrier properties and water vapor barrier properties.
The polyvinylidene chloride resin (hereinafter sometimes referred to as "PVDC") may be a homopolymer of vinylidene chloride, but is usually a copolymer of 60 to 98 mass% of vinylidene chloride and 2 to 40 mass% of other monomer copolymerizable with vinylidene chloride. Examples of other monomers copolymerizable with vinylidene chloride include: vinyl chloride; alkyl acrylates (alkyl having 1 to 18 carbon atoms), such as methyl acrylate, ethyl acrylate, butyl acrylate, and lauryl acrylate; alkyl methacrylates (alkyl groups having 1 to 18 carbon atoms) such as methyl methacrylate, butyl methacrylate, and lauryl methacrylate; vinyl cyanides such as acrylonitrile; aromatic vinyl compounds such as styrene; vinyl esters of aliphatic carboxylic acids having 1 to 18 carbon atoms such as vinyl acetate; alkyl vinyl ether having 1 to 18 carbon atoms; vinyl polymerizable unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid, and fumaric acid; and alkyl esters (including partial esters, in which the number of carbon atoms in the alkyl group is 1 to 18) of vinyl polymerizable unsaturated carboxylic acids such as maleic acid, fumaric acid, and itaconic acid. More preferably at least one selected from vinyl chloride, methyl acrylate or lauryl acrylate. The other monomers copolymerizable with vinylidene chloride may be used alone in 1 kind, or may be used in combination in 2 or more kinds. The copolymerization ratio of the other monomer is more preferably in the range of 3 to 35% by mass, still more preferably 3 to 25% by mass, and particularly preferably 4 to 22% by mass. If the copolymerization ratio of the other monomer is too small, melt processability tends to be lowered, while if it is too large, gas barrier properties tend to be lowered. In addition, 2 or more kinds of PVDC may be mixed for improving melt processability.
PVDC can be synthesized by any polymerization method such as suspension polymerization, emulsion polymerization, and solution polymerization, and when a composite as a powder resin is formed, it is preferably synthesized by suspension polymerization. In the case of synthesis by the suspension polymerization method as described above, the pulverization step for adjusting the particle size of the powder resin formed of PVDC tends to be unnecessary. The particle size of the powder resin made of PVDC is preferably in the range of 40 μm to 2mm, more preferably in the range of 50 μm to 1mm, and still more preferably in the range of 60 to 700 μm. The particle size of the powder resin is measured, for example, by a dry sieving method using a standard sieve.
The resin material (preferably PVDC) for forming the resin film F may contain, as necessary, various additives such as a heat stabilizer, a plasticizer, a processing aid, a colorant, an ultraviolet absorber, a pH adjuster, and a dispersing aid, which are added for the purpose of improving various properties and molding processability. Examples of the heat stabilizer include epoxy compounds such as epoxidized vegetable oils, epoxidized animal oils, epoxidized fatty acid esters, and epoxy resin prepolymers; epoxy group-containing resins and the like, preferably epoxidized vegetable oils. When the heat stabilizer is used, the content thereof is preferably in the range of 0.05 to 6 parts by mass, more preferably in the range of 0.08 to 5 parts by mass, and particularly preferably in the range of 0.1 to 4 parts by mass, per 100 parts by mass of the resin material, preferably PVDC. If the content of the heat stabilizer is too small, the heat stability cannot be sufficiently improved, and the molding process is difficult, which may cause blackening. On the other hand, if the content of the heat stabilizer is too large, the gas barrier property and the cold resistance of the cylindrical resin film may be reduced, or bleeding or fish eyes may be caused. The type and amount of the other additives can be selected in the same manner as those of various additives conventionally used for tubular resin film formation in a filled package. These additives may be used alone in 1 kind, or may be used in combination in 2 or more kinds. In addition, a part or all of the amount of these additives may be contained in the monomer composition in the polymerization step of the resin material such as PVDC, or may be blended in the resin material such as PVDC after polymerization.
The PVDC may contain, as necessary, other resins such as polyethylene wax, oxidized polyethylene wax, polyethylene (low density polyethylene or high density polyethylene), ethylene-vinyl acetate copolymer, homopolymer or copolymer of acrylic acid ester, homopolymer or copolymer of methacrylic acid ester, and methyl methacrylate-butadiene-styrene copolymer for the purpose of improving various properties and molding processability. The properties, shape, and size of the other resin may be appropriately selected as desired in consideration of uniform dispersibility of the resin material forming the resin film F. For example, the solid may be in the form of granules, powder or pellets, or may be in the form of liquid or melt. The surface of another resin may be surface-treated as desired.
The size and thickness of the resin film F are determined according to the size of the content to be filled. The circumferential length of the resin film F is usually 15 to 400mm, most often 30 to 300mm, and widely used is in the range of 40 to 200mm, and the length of the resin film F in the longitudinal direction is usually 50 to 400mm, most often 70 to 300mm, and widely used is in the range of 80 to 250 mm. The thickness of the resin film F is determined by considering the strength, barrier property, etc. of the film according to the content to be filled, and is usually 15 to 300 μm, in many cases 18 to 200 μm, and a range of 20 to 150 μm is widely used. In this range, a thickness of 15 to 25 μm is preferable because the resin film F has a suitable strength and is easily cut.
As shown in FIGS. 1 and 3, the seal portion 10 is a first region P of the laminated film P which is disposed radially outward1Two sheets of film F1A,F1BAnd a second region P of the laminated film P arranged radially inward2Two sheets of film F2A,F2BA radially outer sheet of membrane F2AAnd welding the components together. In this embodiment, these 3 films F are subjected to high-frequency dielectric heating described later1A,F1B,F2AAnd (4) welding.
In the laminated film P, a first region P arranged radially outward from the laminated film P1Approaching edge part PEHas a predetermined width W from the extreme end1Region P ofAIs provided as a non-sealing portion 20. Two rows of through holes 30 are formed in the non-seal portion 20 at a predetermined interval d in the longitudinal direction. The non-sealing portion 20 (region P) having the through-hole 30 formed therein in this mannerA) Is to doThe region at the starting point when the seal portion 10 is cut is easily torn by the user's hand. Width W of the non-sealing portion 201The distance d between the through holes 30 may be set to be in the range of 4 to 8mm, and the distance d between the through holes 30 may be set to be in the range of 3 to 30 mm. In the present embodiment, although an example in which two rows of through holes 30 are formed is shown, one row of through holes may be formed, and three or more rows of through holes may be formed.
Next, a method for manufacturing the package 1 according to the present embodiment will be described with reference to fig. 4 and the like.
First, a first region P of a laminated film P formed by overlapping two resin films F1And a second region P2The cylindrical bodies are arranged outside and inside in the radial direction, respectively, and are overlapped to form a cylindrical body in the form of an envelope bag (first step). Next, as shown in fig. 4, the first region P overlapped in the first step is formed1And a second region P2By means of an external electrode E arranged radially outside1And an inner electrode E arranged radially inward2The package 1 having the sealing portion 10 is formed by sandwiching and sealing the package by high-frequency dielectric heating (second step). In the second step, the first region P arranged radially outward of the laminated film P is formed1Approaching edge part PE1Has a predetermined width W from the extreme end1Region P ofAAs the non-seal portion 20.
In the second step, as shown in fig. 4, the first region P arranged radially outward of the laminated film P is1And an external electrode E1The object 100 is sandwiched between the two members, which are not sealed by the high-frequency dielectric heating, and the high-frequency dielectric heating is performed in this state. By doing so in the first region P1And an external electrode E1The position of the portion (the darkest colored portion in fig. 4) that receives the most heat by the high-frequency dielectric heating can be shifted radially outward by sandwiching the sandwiched object 100 therebetween. Thus, as shown in fig. 3, the first region P disposed radially outward of the laminated film P can be configured1Two sheets of film F1A,F1BAnd a second region P arranged radially inward2Two sheets of film F2A,F2BA radially outer sheet of membrane F2AAnd welded to form the seal portion 10.
As the insert 100, for example, a Teflon tape having a thickness of 10 to 300 μm can be used. Other materials (for example, tapes or films of polyethylene, polypropylene, polyamide, polyimide, cellulose, polyester, polyacetal, ceramics, glass fiber, etc.) which are less heat-generating under high-frequency dielectric heating may be used as the insert 100.
As shown in fig. 2, two rows of through holes 30 are formed in the laminated film P at a predetermined interval in the longitudinal direction at a portion corresponding to the non-sealing portion 20 (third step). As described above, the width W of the non-sealing portion 201The distance d between the through holes 30 may be set to be in the range of 4 to 8mm, and the distance d between the through holes 30 may be set to be in the range of 3 to 30 mm. The third step is performed before the first step.
Next, a method of opening the package 1 of the present embodiment will be described.
When opening the package 1 in which contents such as sausage are packaged, a user first pinches the non-seal portion 20 of the package 1 with a finger and tears the package in a direction (width direction) substantially perpendicular to the longitudinal direction of the package 1, thereby applying a force to cut the seal portion 10. When such a force is applied, the seal portion 10 is broken in the width direction, and in this case, the first region P can be formed1Two sheets of film F1A,F1BOf (2) a radially outer membrane F1ADoes not contact the radially inner membrane F1BThe first region P is removed1And the second region P2The sealing state is released surely by separation. Thereafter, the user cuts the laminated film P along the width direction of the package 1 or cuts the seal portion 10 along the longitudinal direction of the package 1, thereby opening the package 1.
In the package 1 of the embodiment described above, the first region P constituting the radially outer side of the cylindrical body in the form of an envelope is arranged1Two sheets of film F1A,F1BAnd a second region P arranged radially inside the cylindrical body2Two sheets of film F2A、F2BA radially outer sheet of membrane F2AAnd welded to form the seal portion 10. Therefore, when the sealed portion 10 is cut to open the package 1, the first region P arranged radially outward can be prevented from being formed1Two sheets of film F1A,F1BOf (2) a radially outer membrane F1AWith the membrane F radially inside1BAnd (6) stripping. As a result, the possibility of unsealing failure can be reduced.
In the above embodiment, the first regions P are overlapped with each other1And a second region P2Although the example of "the region near the edge portion" and "the region including the edge portion" of the laminated film P is shown, a region distant from the edge portion of the laminated film P may be used as the first region P1(second region P)2)。
The present invention is not limited to the above-described embodiments, and a configuration obtained by appropriately modifying the design of the above-described embodiments by those skilled in the art as long as the features of the present invention are provided is also included in the scope of the present invention. That is, the elements, the arrangement, the materials, the conditions, the shapes, the sizes, and the like of the elements included in the above embodiments are not limited to those illustrated, and can be appropriately changed. The elements included in the above embodiments may be technically combined as much as possible, and a combination of the elements is also included in the scope of the present invention as long as the combination includes the features of the present invention.
Claims (14)
1. A package in the form of an envelope bag having a seal portion formed by disposing a first region and a second region of a laminate film formed by laminating two resin films on each other radially outward and radially inward, respectively, and sealing the first region and the second region in a superposed state,
the seal portion is formed by welding two films constituting the first region arranged radially outward to one film located radially outward of two films constituting the second region arranged radially inward.
2. The package according to claim 1, wherein the resin film has a thickness of 15 to 25 μm.
3. The package according to claim 1 or 2, wherein the resin film is a vinylidene chloride film.
4. The package according to any one of claims 1 to 3,
in the laminated film, a region having a predetermined width from an outermost end portion of an edge portion adjacent to the first region disposed radially outward is a non-sealing portion,
the non-sealing portion is formed with at least one row of through holes arranged at a predetermined interval in a longitudinal direction.
5. The package according to claim 4, wherein the non-seal portion is a region having a width of 4mm to 8mm from an extreme end portion of the edge portion.
6. The package according to claim 4 or 5, wherein the through-holes are arranged at intervals of 3mm to 30mm in a longitudinal direction.
7. A method for manufacturing a package, comprising the steps of:
a first step of forming a tubular body in the form of an envelope by arranging and overlapping a first region and a second region of a laminated film, which is formed by laminating two resin films, on the radially outer side and the radially inner side, respectively; and
a second step of forming a package having a sealed portion by sandwiching the first region and the second region overlapped with each other in the first step between an outer electrode disposed on a radially outer side and an inner electrode disposed on a radially inner side and sealing the regions by high-frequency dielectric heating,
wherein,
in the second step, the two films constituting the first region disposed radially outward are welded to one of the two films constituting the second region disposed radially inward, thereby forming the seal portion.
8. The method for producing a package according to claim 7, wherein the resin film has a thickness of 15 to 25 μm.
9. The method for producing a package according to claim 7 or 8, wherein the resin film is a vinylidene chloride film.
10. The method of manufacturing a package according to any one of claims 7 to 9, wherein in the second step, a sandwich that is not sealed by high-frequency dielectric heating is sandwiched between the first region disposed radially outward and the external electrode, and high-frequency dielectric heating is performed in this state.
11. The method of manufacturing a package according to claim 10, wherein the insert has a thickness of 10 μm to 300 μm.
12. The method of manufacturing a package according to any one of claims 7 to 11,
in the second step, a region of the laminated film having a predetermined width from an outermost end of an edge portion adjacent to the first region disposed radially outward is defined as a non-sealing portion,
the method comprises the following steps:
and a third step of forming at least one row of through holes arranged at a predetermined interval in a longitudinal direction in a portion of the laminate film corresponding to the non-sealing portion.
13. The method of manufacturing a package according to claim 12, wherein the non-seal portion is a region having a width of 4mm to 8mm from an outermost end portion of the edge portion.
14. The method of manufacturing a package according to claim 12 or 13, wherein the through-holes are arranged at an interval of 3mm to 30mm in a longitudinal direction.
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WO2023032632A1 (en) * | 2021-08-30 | 2023-03-09 | 株式会社クレハ | Vinylidene chloride-based resin composition, stretched film, and filling package |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4883698A (en) * | 1987-01-17 | 1989-11-28 | Hoechst Aktiengesellschaft | Multilayer film containing a biaxially oriented polypropylene film |
CN1126163A (en) * | 1993-12-28 | 1996-07-10 | 富士脉冲株式会社 | Heat-sealing apparatus |
JP2000141469A (en) * | 1998-11-06 | 2000-05-23 | Fuji Seal Inc | Tube object and its production |
CN1367127A (en) * | 2001-01-26 | 2002-09-04 | 日本特许管理株式会社 | Easy-to-open tubular sealed shell |
JP2003112739A (en) * | 2001-10-02 | 2003-04-18 | Tg Puratekku:Kk | Multi-layered film tube and bag member |
US20100181370A1 (en) * | 2009-01-20 | 2010-07-22 | Curwood, Inc. | Peelable Film and Package Using Same |
JP2014181076A (en) * | 2013-03-15 | 2014-09-29 | Daicel Value Coating Ltd | Slice cheese packaging film, and individual package |
JP2014219541A (en) * | 2013-05-08 | 2014-11-20 | グンゼ株式会社 | Heat shrinkable tubular label and container |
CN205770469U (en) * | 2016-06-30 | 2016-12-07 | 浙江一景乳业股份有限公司 | A kind of aseptic filler |
US20180255793A1 (en) * | 2017-03-09 | 2018-09-13 | Columbit (Pty) Ltd | Casing for food products |
JP2018187814A (en) * | 2017-04-28 | 2018-11-29 | 旭化成株式会社 | Multilayer film, and cylindrical package |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0641312B2 (en) | 1987-11-18 | 1994-06-01 | 呉羽化学工業株式会社 | Cylindrical film package filled with processed food |
JPH092427A (en) * | 1995-06-16 | 1997-01-07 | Material Eng Tech Lab Inc | Device and method for sealing resin sheet |
JP3608205B2 (en) * | 1996-10-17 | 2005-01-05 | セイコーエプソン株式会社 | Semiconductor device, manufacturing method thereof, and circuit board |
JP5385110B2 (en) * | 2009-12-03 | 2014-01-08 | 旭化成ケミカルズ株式会社 | Easy-open sealed package |
JP5903226B2 (en) * | 2011-08-22 | 2016-04-13 | 藤森工業株式会社 | Cylindrical sealed package and method for manufacturing the same |
JP5813568B2 (en) * | 2012-04-27 | 2015-11-17 | 旭化成ケミカルズ株式会社 | Vinylidene chloride-based resin laminated film and easy-open tubular sealed package using the same |
JP6285212B2 (en) * | 2014-03-03 | 2018-02-28 | 株式会社クレハ | Filled package with easy opening and retort resistance |
JP7219536B2 (en) * | 2017-10-16 | 2023-02-08 | 旭化成株式会社 | Cylindrical package |
-
2020
- 2020-04-22 JP JP2020075854A patent/JP7341942B2/en active Active
- 2020-06-12 KR KR1020200071300A patent/KR102457846B1/en active IP Right Grant
- 2020-06-17 CN CN202010552203.7A patent/CN112109981B/en active Active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4883698A (en) * | 1987-01-17 | 1989-11-28 | Hoechst Aktiengesellschaft | Multilayer film containing a biaxially oriented polypropylene film |
CN1126163A (en) * | 1993-12-28 | 1996-07-10 | 富士脉冲株式会社 | Heat-sealing apparatus |
JP2000141469A (en) * | 1998-11-06 | 2000-05-23 | Fuji Seal Inc | Tube object and its production |
CN1367127A (en) * | 2001-01-26 | 2002-09-04 | 日本特许管理株式会社 | Easy-to-open tubular sealed shell |
JP2003112739A (en) * | 2001-10-02 | 2003-04-18 | Tg Puratekku:Kk | Multi-layered film tube and bag member |
US20100181370A1 (en) * | 2009-01-20 | 2010-07-22 | Curwood, Inc. | Peelable Film and Package Using Same |
JP2014181076A (en) * | 2013-03-15 | 2014-09-29 | Daicel Value Coating Ltd | Slice cheese packaging film, and individual package |
JP2014219541A (en) * | 2013-05-08 | 2014-11-20 | グンゼ株式会社 | Heat shrinkable tubular label and container |
CN205770469U (en) * | 2016-06-30 | 2016-12-07 | 浙江一景乳业股份有限公司 | A kind of aseptic filler |
US20180255793A1 (en) * | 2017-03-09 | 2018-09-13 | Columbit (Pty) Ltd | Casing for food products |
JP2018187814A (en) * | 2017-04-28 | 2018-11-29 | 旭化成株式会社 | Multilayer film, and cylindrical package |
Non-Patent Citations (1)
Title |
---|
李良: "《食品包装学》", 31 July 2017, 中国轻工业出版社 * |
Also Published As
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CN112109981B (en) | 2022-06-24 |
JP2021001027A (en) | 2021-01-07 |
JP7341942B2 (en) | 2023-09-11 |
KR102457846B1 (en) | 2022-10-21 |
KR20200145702A (en) | 2020-12-30 |
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