JP2018024437A - Film for opening piece, opening piece, base material film for package, package having opening piece, and method for producing film for opening piece - Google Patents
Film for opening piece, opening piece, base material film for package, package having opening piece, and method for producing film for opening piece Download PDFInfo
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- JP2018024437A JP2018024437A JP2016155464A JP2016155464A JP2018024437A JP 2018024437 A JP2018024437 A JP 2018024437A JP 2016155464 A JP2016155464 A JP 2016155464A JP 2016155464 A JP2016155464 A JP 2016155464A JP 2018024437 A JP2018024437 A JP 2018024437A
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- film
- opening piece
- package
- base material
- opening
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- 239000000463 material Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 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 abstract description 36
- 239000011342 resin composition Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 26
- 238000004806 packaging method and process Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000002040 relaxant effect Effects 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 230000006866 deterioration Effects 0.000 abstract description 2
- 239000000654 additive Substances 0.000 description 10
- 229920005989 resin Polymers 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 9
- 238000001125 extrusion Methods 0.000 description 8
- 239000000178 monomer Substances 0.000 description 8
- 229920006280 packaging film Polymers 0.000 description 8
- 239000012785 packaging film Substances 0.000 description 8
- 229920001577 copolymer Polymers 0.000 description 7
- 239000000314 lubricant Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- QZCLKYGREBVARF-UHFFFAOYSA-N Acetyl tributyl citrate Chemical compound CCCCOC(=O)CC(C(=O)OCCCC)(OC(C)=O)CC(=O)OCCCC QZCLKYGREBVARF-UHFFFAOYSA-N 0.000 description 5
- -1 alkyl vinyl ether Chemical compound 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 235000021067 refined food Nutrition 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- PYGXAGIECVVIOZ-UHFFFAOYSA-N Dibutyl decanedioate Chemical compound CCCCOC(=O)CCCCCCCCC(=O)OCCCC PYGXAGIECVVIOZ-UHFFFAOYSA-N 0.000 description 4
- 206010013647 Drowning Diseases 0.000 description 4
- 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
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 4
- 239000004014 plasticizer Substances 0.000 description 4
- 239000005033 polyvinylidene chloride Substances 0.000 description 4
- 239000004094 surface-active agent Substances 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
- 238000004804 winding Methods 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 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
- 125000000217 alkyl group Chemical group 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 239000001530 fumaric acid Substances 0.000 description 2
- 239000007788 liquid Substances 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
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 235000014059 processed cheese Nutrition 0.000 description 2
- 235000013580 sausages Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 235000012424 soybean oil Nutrition 0.000 description 2
- 239000003549 soybean oil Substances 0.000 description 2
- 229940037312 stearamide Drugs 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 1
- WDQMWEYDKDCEHT-UHFFFAOYSA-N 2-ethylhexyl 2-methylprop-2-enoate Chemical compound CCCCC(CC)COC(=O)C(C)=C WDQMWEYDKDCEHT-UHFFFAOYSA-N 0.000 description 1
- JTHZUSWLNCPZLX-UHFFFAOYSA-N 6-fluoro-3-methyl-2h-indazole Chemical compound FC1=CC=C2C(C)=NNC2=C1 JTHZUSWLNCPZLX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- 206010013642 Drooling Diseases 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-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
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 1
- 229920001214 Polysorbate 60 Polymers 0.000 description 1
- 208000008630 Sialorrhea Diseases 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229920001986 Vinylidene chloride-vinyl chloride copolymer Polymers 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 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
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 238000012856 packing Methods 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
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Landscapes
- Packages (AREA)
- Wrappers (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
本発明は、開封片、例えばソーセージ、プロセスチーズ等の加工食品の内容物を密封している包装体を開封するためのもの、及びその開封片を備えた包装体に関する。 The present invention relates to an opening piece, for example, for opening a package body that seals the contents of processed foods such as sausage and processed cheese, and to a package body including the opening piece.
ソーセージ、プロセスチーズなどの加工食品の包装体は、通常包装フィルムにより筒状に形成されており、その内部に加工食品が充填され、筒体の長手方向両端部がアルミワイヤクリップなどにより密封された構造となっている。
この種の包装体は、包装フィルムを剥して内容物である加工食品を露出させる必要があるが、そのために、カットテープあるいはオープナと称される開封片が設けられているものがある。
A package of processed foods such as sausages and processed cheeses is usually formed into a cylindrical shape with a packaging film, the processed food is filled inside, and both longitudinal ends of the cylinder are sealed with aluminum wire clips or the like It has a structure.
In this type of package, it is necessary to peel off the packaging film to expose the processed food, which is the content, and for this purpose, there is a package provided with an opening piece called a cut tape or an opener.
開封片は、包装フィルムと組成の近い塩化ビニリデン系樹脂組成物からなるものが知られているが、加工食品包装体を殺菌する際のレトルト加熱処理によって収縮してしまい、開封片の捲れを発生することとなり、食品の安全性の確保に好ましくない状況が生まれていた。
その問題を解消するため、熱収縮率の異なる樹脂組成物の積層体による開封片が提案されている（特許文献１）
Opening pieces are known to be composed of vinylidene chloride resin compositions that are similar in composition to the packaging film, but they shrink due to retort heat treatment when sterilizing processed food packaging, causing the opening pieces to curl As a result, an unfavorable situation for food safety was born.
In order to solve the problem, an opening piece using a laminate of resin compositions having different thermal shrinkage rates has been proposed (Patent Document 1).
しかしながら従来のフィルムは、円筒状包装体において熱収縮によるカールの発生を前提とした改良効果を狙っていたため、その効果にはバラツキが大きく、場合によっては発生したカールによって包装体への密着性が劣化したため、更なる改良が求められている。 However, the conventional film aimed at an improvement effect on the premise of curling due to heat shrinkage in the cylindrical package, so the effect varies widely, and in some cases the generated curl has good adhesion to the package. Due to the deterioration, further improvements are required.
本発明は、上記の問題に鑑みてなされたものであり、その目的は、円筒状包装体であっても密着性に優れる開封片用フィルム、それから形成した開封片、その開封片を備えた包装体用母材フィルム、その包装体用母材フィルムを使用した包装体、そして開封片用フィルムの製造方法を提供することである。 The present invention has been made in view of the above problems, and its purpose is to provide a film for an opening piece that is excellent in adhesiveness even if it is a cylindrical package, an opening piece formed from the film, and a package provided with the opening piece It is providing the manufacturing method of the base material film for bodies, the package which uses the base material film for the packages, and the film for an opening piece.
本発明者らは、下記によって課題を解決できることを見出した。
１．塩化ビニリデン系樹脂組成物からなる、２層構造を有している開封片を備えた包装体であって、該開封片捲り端から６ｍｍの位置を溶着した場合の捲れ高さが１ｍｍ未満であることを特徴とする包装体。
２．開封片を形成するための開封片用フィルムであって、１２０℃で３０分加熱処理した後に２３℃で２時間冷却した時のカール量が７ｍｍ以下であることを特徴とする開封片用フィルム。
３．前記開封片用フィルムから形成された開封片。
４．開封片を備えた包装体用母材フィルムにおいて、開封片は、開封片を形成するための開封片用フィルムが、１２０℃で３０分加熱処理した後に２３℃で２時間冷却した時に凹面となる面で包装体用母材フィルムに備えられていることを特徴とする包装体用母材フィルム。
５．前記包装体用母材フィルムを使用した包装体。
６．塩化ビニリデン系樹脂を含有する開封片用フィルムを製造する方法であって、少なくとも下記工程を順に有することを特徴とする開封片用フィルムの製造方法。
１．塩化ビニリデン系樹脂組成物を溶融押出する工程
２．前記溶融押出された組成物を延伸によりフィルムとし緩和する工程
３．前記緩和したフィルムを加熱ロールにより再緩和する工程
７．前記加熱ロール緩和工程による再緩和率がＭＤ方向に０．５〜２０％、ＴＤ方向に０．５〜４０％であることを特徴とする前記6記載の開封片用フィルムの製造方法。
The present inventors have found that the problem can be solved by the following.
1. A package comprising a vinylidene chloride-based resin composition and having an opening piece having a two-layer structure, and a fringing height when welding a position of 6 mm from the end of the opening piece is less than 1 mm A package characterized by that.
2. An opening piece film for forming an opening piece, wherein the curling amount is 7 mm or less when heated at 120 ° C for 30 minutes and then cooled at 23 ° C for 2 hours.
3. An opening piece formed from the film for opening piece.
4). In the base material film for a packaging body provided with an opening piece, the opening piece becomes concave when the opening piece film for forming the opening piece is heated at 120 ° C. for 30 minutes and then cooled at 23 ° C. for 2 hours. A base material film for packaging body, characterized in that the base material film for packaging body is provided with a surface.
5. A package using the base material film for a package.
6). A method for producing an opening piece film comprising a vinylidene chloride-based resin, comprising at least the following steps in order.
1. 1. Step of melt-extruding a vinylidene
本発明によれば、密着性に優れる開封片用フィルム、それから形成した開封片、その開封片を備えた包装体用母材フィルム、その包装体用母材フィルムを使用した包装体、そして開封片用フィルムの製造方法を提供することができる。 According to the present invention, an opening piece film having excellent adhesion, an opening piece formed therefrom, a base material film for a packaging body provided with the opening piece, a packaging body using the base material film for the packaging body, and an opening piece The manufacturing method of the film for medical use can be provided.
本発明の包装体は、塩化ビニリデン系樹脂組成物からなる２層構造を有している開封片を備えた包装体であって、該開封片捲り端から６ｍｍの位置を溶着した場合、の捲れ高さが１ｍｍ未満であることを特徴とする。 The package of the present invention is a package including an opening piece having a two-layer structure made of a vinylidene chloride-based resin composition, and the container is bent when a position 6 mm from the end of the opening of the opening piece is welded. The height is less than 1 mm.
本発明の開封片は、開封片用フィルムを所望の大きさに切り出すことによって形成される。本発明の開封片用フィルムは、塩化ビニリデン系樹脂組成物からなる。
＜塩化ビニリデン系樹脂組成物＞
塩化ビニリデン系樹脂組成物は塩化ビニリデン系樹脂を主成分とする。ここで主成分とは塩化ビニリデン系樹脂を５０％以上含有することをいう。塩化ビニリデン系樹脂は、塩化ビニリデン共重合体を主成分として含有する。塩化ビニリデン共重合体は、塩化ビニリデン６０〜９８重量％および塩化ビニリデンと共重合可能な単量体の少なくとも一種２〜４０重量％から形成される共重合体であり、塩化ビニリデンモノマー（単量体）と塩化ビニリデンと共重合可能な単量体とを、懸濁重合または乳化重合して製造されるものである。
The opening piece of this invention is formed by cutting out the film for opening pieces to a desired magnitude | size. The film for opening pieces of the present invention comprises a vinylidene chloride resin composition.
<Vinylidene chloride resin composition>
The vinylidene chloride-based resin composition is mainly composed of a vinylidene chloride-based resin. Here, the main component means containing 50% or more of vinylidene chloride resin. The vinylidene chloride-based resin contains a vinylidene chloride copolymer as a main component. The vinylidene chloride copolymer is a copolymer formed of 60 to 98% by weight of vinylidene chloride and 2 to 40% by weight of at least one monomer copolymerizable with vinylidene chloride. ) And a monomer copolymerizable with vinylidene chloride are produced by suspension polymerization or emulsion polymerization.
塩化ビニリデンと共重合可能な単量体（以下、共単量体）としては、例えば塩化ビニル、アクリル酸メチル、アクリル酸エチル、アクリル酸ブチル、アクリル酸２−エチルヘキシル、アクリル酸ラウリルおよびアクリル酸ステアリル等のアクリル酸アルキルエステル（アルキル基の炭素数１〜１８）；メタクリル酸メチル、メタクリル酸ブチル、メタクリル酸２−エチルヘキシル、メタクリル酸ラウリルおよびタクリル酸ステアリル等のメタクリル酸アルキルエステル（アルキル基の炭素数１〜１８）；アクリロニトリルおよびメタクリロニトリル等のシアン化ビニル；スチレン等の芳香族ビニル；酢酸ビニル等の炭素数１〜１８の脂肪族カルボン酸のビニルエステル；炭素数１〜１８のアルキルビニルエーテル；アクリル酸、メタクリル酸、マレイン酸、フマル酸およびイタコン酸等のビニル重合性不飽和カルボン酸；マレイン酸、フマル酸およびイタコン酸等のビニル重合性不飽和カルボン酸のアルキルエステル（部分エステルを含み、アルキル基の炭素数１〜１８）；その他、ジエン系単量体、官能基含有単量体ならびに多官能性単量体等を挙げられる。 Examples of the monomer copolymerizable with vinylidene chloride (hereinafter, comonomer) include, for example, vinyl chloride, methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, lauryl acrylate, and stearyl acrylate. Acrylic acid alkyl esters (alkyl group having 1 to 18 carbon atoms); methyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, lauryl methacrylate and stearyl tacrylate, etc. 1-18); vinyl cyanide such as acrylonitrile and methacrylonitrile; aromatic vinyl such as styrene; vinyl ester of aliphatic carboxylic acid having 1 to 18 carbon atoms such as vinyl acetate; alkyl vinyl ether having 1 to 18 carbon atoms; Acrylic acid, methacrylic acid Vinyl polymerizable unsaturated carboxylic acids such as maleic acid, fumaric acid and itaconic acid; alkyl esters of vinyl polymerizable unsaturated carboxylic acids such as maleic acid, fumaric acid and itaconic acid (including partial esters, carbon number of alkyl group 1 -18); other examples include diene monomers, functional group-containing monomers, and polyfunctional monomers.
これらの共単量体は、単独でまたは２種以上を組み合わせて用いることができる。共単量体の中でも、塩化ビニル、アクリル酸メチルまたはアクリル酸ブチルが好ましく、塩化ビニルがより好ましい。したがって、より好ましい塩化ビニリデン共重合体は、塩化ビニリデン−塩化ビニル共重合体である。塩化ビニリデン共重合体における塩化ビニリデンの含有比率は、７０重量％以上が好ましく、８０重量％以上がより好ましい。塩化ビニリデンの含有比率の上限は、特にないが、押出加工性等の観点から、通常９８重量％、多くの場合９５重量％である。 These comonomer can be used individually or in combination of 2 or more types. Among the comonomer, vinyl chloride, methyl acrylate or butyl acrylate is preferable, and vinyl chloride is more preferable. Therefore, a more preferred vinylidene chloride copolymer is a vinylidene chloride-vinyl chloride copolymer. The content ratio of vinylidene chloride in the vinylidene chloride copolymer is preferably 70% by weight or more, and more preferably 80% by weight or more. The upper limit of the content ratio of vinylidene chloride is not particularly limited, but is usually 98% by weight and in most cases 95% by weight from the viewpoint of extrudability.
塩化ビニリデン系樹脂の還元粘度は、０．０３５〜０．０７０の範囲であることが好ましく、０．０４０〜０．０６５の範囲であることがより好ましく、０．０４５〜０．０６３の範囲であることがさらに好ましい。還元粘度が小さすぎると、フィルムの成形品への押出加工性が不足し、大きすぎると、着色傾向を有したり、溶融成形が困難となったりすることがある。 The reduced viscosity of the vinylidene chloride resin is preferably in the range of 0.035 to 0.070, more preferably in the range of 0.040 to 0.065, and in the range of 0.045 to 0.063. More preferably it is. When the reduced viscosity is too small, the extrudability of the film into a molded product is insufficient, and when the reduced viscosity is too large, the film tends to be colored or melt molding may be difficult.
［添加剤］
塩化ビニリデン系樹脂は、さらに種々の添加剤を含有することができる。添加剤としては、有機物質（重合体でもよい）または無機物質のいずれも使用することができる。添加剤としては、例えば、可塑剤、界面活性剤および滑剤等が挙げられる。
（可塑剤）
可塑剤としては、ジオクチルフタレート、アセチルクエン酸トリブチル、ジブチルセバケート、ジオクチルセバケート、アセチル化モノグリセライド、アセチル化ジグリセライドおよびアセチル化トリグリセライド等が挙げられる。
（界面活性剤）
界面活性剤としては、グリセリン脂肪酸エステル、ポリグリセリン脂肪酸エステル、ソルビタン脂肪酸エステルおよびポリオキシエチレンソルビタン脂肪酸エステルなどのノニオン系界面活性剤等が挙げられる。
（滑剤）
滑剤としては、例えば、二酸化珪素、ゼオライトおよび炭酸カルシウム等の無機滑剤、ならびに有機滑剤等が挙げられ、これらを併用して使用することができる。
有機滑剤としては、例えば、飽和脂肪酸アミド、不飽和脂肪酸アミド、置換アミドおよびチオエーテル系化合物等が挙げられる。
[Additive]
The vinylidene chloride-based resin can further contain various additives. As the additive, either an organic substance (which may be a polymer) or an inorganic substance can be used. Examples of the additive include a plasticizer, a surfactant and a lubricant.
(Plasticizer)
Examples of the plasticizer include dioctyl phthalate, tributyl acetylcitrate, dibutyl sebacate, dioctyl sebacate, acetylated monoglyceride, acetylated diglyceride, and acetylated triglyceride.
(Surfactant)
Examples of the surfactant include nonionic surfactants such as glycerin fatty acid ester, polyglycerin fatty acid ester, sorbitan fatty acid ester, and polyoxyethylene sorbitan fatty acid ester.
(Lubricant)
Examples of the lubricant include inorganic lubricants such as silicon dioxide, zeolite and calcium carbonate, and organic lubricants, and these can be used in combination.
Examples of the organic lubricant include saturated fatty acid amides, unsaturated fatty acid amides, substituted amides, and thioether compounds.
添加剤の含有量としては、添加剤が可塑剤等の液体添加剤である場合には、塩化ビニリデン系樹脂１００重量部に対して０．０５〜１０重量部の範囲であることが好ましく、０．５〜８．０重量部の範囲であることがより好ましく、１．０〜６．０重量部の範囲であることがさらに好ましい。特に液体添加剤の配合割合の上限が上記範囲内であれば、ブリードアウトによるベタツキを抑えることができる。また、添加剤が界面活性剤および滑剤等の紛体添加剤である場合には、塩化ビニリデン系樹脂１００重量部に対して０．１〜１０重量部の範囲であることが好ましく、０．５〜８．０重量部の範囲であることがより好ましく、１．０〜６．０重量部の範囲であることがさらに好ましい。 The content of the additive is preferably in the range of 0.05 to 10 parts by weight with respect to 100 parts by weight of the vinylidene chloride resin when the additive is a liquid additive such as a plasticizer. The range is more preferably in the range of 0.5 to 8.0 parts by weight, and still more preferably in the range of 1.0 to 6.0 parts by weight. In particular, if the upper limit of the blending ratio of the liquid additive is within the above range, stickiness due to bleed out can be suppressed. In addition, when the additive is a powder additive such as a surfactant and a lubricant, it is preferably in the range of 0.1 to 10 parts by weight with respect to 100 parts by weight of vinylidene chloride resin, 0.5 to The range is more preferably 8.0 parts by weight, and still more preferably 1.0 to 6.0 parts by weight.
＜２層構造の開封片＞
本発明の開封片を形成するための開封片用フィルムは、溶融押出法、溶液流延法およびカレンダー法等の成形方法によって製造できるが、生産効率の面で溶融押出法が好ましい。溶融押出法としては、Ｔダイ法およびインフレーション法等があり、密着性の点からインフレーション法が好ましい。１層ずつを巻き取り後積層することも可能であるが、インフレーション法により２軸延伸後そのまま２枚を重ねることにより２層構造とするのが好ましい。
<Two-layer unsealed piece>
The film for opening pieces for forming the opening pieces of the present invention can be produced by a molding method such as a melt extrusion method, a solution casting method and a calender method, but the melt extrusion method is preferred in terms of production efficiency. Examples of the melt extrusion method include a T-die method and an inflation method, and the inflation method is preferable from the viewpoint of adhesion. Although it is possible to laminate after layering one layer at a time, it is preferable to have a two-layer structure by stacking two sheets as they are after biaxial stretching by an inflation method.
各２層の厚みには特に制限はなく同じでも異なっても良いが、各層として２０〜６０μｍ、２層として４０〜１２０μｍであることが、開封性の点から好ましい。 The thickness of each of the two layers is not particularly limited and may be the same or different, but 20 to 60 μm for each layer and 40 to 120 μm for the two layers are preferable from the viewpoint of openability.
本発明においては、通常のインフレーション二軸延伸法を採用することができる。 In the present invention, a normal inflation biaxial stretching method can be employed.
＜開封片の捲れ高さが１ｍｍ未満＞
本発明では、食品等を充填した包装体に備えられた開封片が、捲り端から６ｍｍの位置を溶着した場合、包装体からの捲れ高さが１ｍｍ未満であることを特徴とする。こうすることにより包装体の開封性を落とすことなく、開封片の捲れの発生を抑制し包装体の事故を減少させることができる。
<The twist height of the unsealed piece is less than 1 mm>
In the present invention, when the opening piece provided in the package filled with food or the like is welded at a position of 6 mm from the punched end, the height of the punch from the package is less than 1 mm. By doing so, it is possible to suppress the occurrence of curling of the opened piece and reduce the number of accidents of the packaged body without degrading the openability of the packaged body.
本発明の開封片は包装体に超音波などの方法により溶着され、その一端を担持して引き剥がす際に、包装体との溶着部が破壊し開封される。本発明の捲れ高さは、担持する一端の捲れ高さを評価したものであり、担持して引き剥がす端を本発明の捲り端とし、対向する端を他端とする。 The opening piece of the present invention is welded to the package by a method such as ultrasonic waves, and when the one end is held and peeled off, the welded portion with the package is broken and opened. The curling height of the present invention is an evaluation of the curling height of one end to be supported, and the end to be supported and peeled is the curled end of the present invention, and the opposite end is the other end.
本発明での溶着位置は、捲り端から６ｍｍ他端に寄った位置を基準とし、他端は捲れ高さの測定に邪魔にならない程度に溶着していればよい。図２では、本発明に好ましい位置で溶着された包装体を示している。図３では、もっとも捲れ高さを測定するのに好ましい溶着位置を示している。図３中１，２，３は溶着部位であり、それぞれ第１接合部、第２接合部、第３接合部である。なお、図中のサイズを示す数字の単位はミリメートルである。 The welding position in the present invention is based on the position near the other end of 6 mm from the winding end, and the other end only needs to be welded so as not to interfere with the measurement of the bending height. FIG. 2 shows the package welded at a preferred position in the present invention. FIG. 3 shows a welding position that is most preferable for measuring the height of bending. In FIG. 3, 1, 2 and 3 are welding parts, which are a first joint part, a second joint part and a third joint part, respectively. In addition, the unit of the number which shows the size in a figure is a millimeter.
第１接合部１は、開封片を剥がした際に、包装フィルムを面状に裂くことの起点となる接合部である。第２接合部２は、第１接合部よりも剥り方向の下流側に位置し、開封片を剥がした際に第１接合部によって面状に裂かれた包装フィルムが到達すると、面状に裂かれる包装フィルムの胴周方向の幅をさらに広げることの起点となる接合部である。
The 1st junction part 1 is a junction part used as the starting point of tearing a packaging film in planar shape, when peeling an opening piece. The second
第３接合部は、開封片を剥がした際に、第２接合部によって面状に裂かれた包装フィルムを開封片付き包装体の後方に引き下げると、包装フィルムを包装体の胴周方向に開裂させることの起点となる接合部である。本発明では捲り端からこの第３接合部までの位置が６ｍｍである。この距離にすることにより、実際の製品に近い捲れ高さを再現することができる。 When the 3rd junction part pulls down the packaging film which was torn in the shape of a plane by the 2nd junction part at the time of peeling off an opening piece, it will cleave a packaging film in the body circumference direction of a packaging body This is the joint that is the starting point. In the present invention, the position from the turn edge to the third joint is 6 mm. By using this distance, it is possible to reproduce the heel height close to the actual product.
捲れ高さは、図１で示すように開封片を上にした包装体を真横から観察し、その高さをもって評価する。
＜開封片用フィルムのカール量＞
本発明の開封片用フィルムは、１２０℃で３０分加熱処理した後に２３℃で２時間冷却した時のカール量が７ｍｍ以下であることを特徴とする。こうすることによりレトルト加熱後の包装体に備えられた開封片用フィルム自体のカール量が小さいため、そこから形成される開封片もカールが小さく、円筒状の包装体に備えられた場合、開封片の捲れ発生を抑制するという本発明の効果を発揮することができる。カール量の絶対値は小さい方が好ましいが、２〜６ｍｍが好ましい。
なお、カール量は、開封片用フィルムから、２０ｍｍ×２０ｍｍのフィルム片を作製した。このフィルム片を１２０℃、３０分間オーブン中で加熱処理した後に取出し、２３℃で２時間冷却したフィルムの最大のカールのＲ（直径φ：ｍｍ）とした。
As shown in FIG. 1, the drooping height is evaluated by observing the package with the unsealed piece up from the side and measuring the height.
<Curl amount of film for opening piece>
The film for opening pieces of the present invention is characterized in that the curl amount is 7 mm or less when heated at 120 ° C. for 30 minutes and then cooled at 23 ° C. for 2 hours. By doing this, the curl amount of the opening piece film itself provided in the package after the retort heating is small, so the opening piece formed from the curl is also small, and when the case is provided in the cylindrical package, The effect of the present invention that suppresses the occurrence of curling of the pieces can be exhibited. The absolute value of the curl amount is preferably small, but is preferably 2 to 6 mm.
In addition, the curl amount produced a 20 mm x 20 mm film piece from the film for opening pieces. The film piece was heat-treated in an oven at 120 ° C. for 30 minutes, taken out, and taken as R (diameter φ: mm) of the maximum curl of the film cooled at 23 ° C. for 2 hours.
＜包装体用母材フィルム＞
本発明の開封片を備えた包装体用母材フィルム（開封片付き母材フィルムともいう）は、開封片が、開封片を形成するための開封片用フィルムを１２０℃で３０分加熱処理した後に２３℃で２時間冷却した時に凹面となる面で包装体用母材フィルムに備えられていることを特徴とする。
開封片をこのように備えることにより、開封片のカールと包装体用母材フィルムに内容物充填後の形状が近似することにより、捲れ高さを低く維持することができる。
開封片を包装体用母材フィルムに備える方法としては、接着剤、熱融着、超音波シール等による方法が知られているが、開封性の点から超音波シールによる方法が好ましい。
包装体用母材フィルムは、食品包装体として通常使用できるものを使用することができるが、密着性の点から本発明の開封片用フィルムと同様の塩化ビニリデン系樹脂組成物を使用することが好ましい。
<Base material film for packaging>
The base material film for packaging body (also referred to as a base material film with an opening piece) provided with the opening piece of the present invention is obtained by heating the opening piece film for forming an opening piece at 120 ° C. for 30 minutes. It is provided in the base material film for packaging bodies on a surface that becomes a concave surface when cooled at 23 ° C. for 2 hours.
By providing the opening piece in this manner, the curling height can be kept low by approximating the curl of the opening piece and the shape of the package base material after filling the contents.
As a method of providing the opening piece on the base material film for a package, a method using an adhesive, heat fusion, ultrasonic sealing, or the like is known, but a method using ultrasonic sealing is preferable from the viewpoint of opening.
Although the base material film for a package can use what can be normally used as a food package, it can use the vinylidene chloride resin composition similar to the film for opening pieces of the present invention from the viewpoint of adhesion. preferable.
＜開封片用フィルムの製造方法＞
本発明は、開封片用フィルムの新たな製造方法を見出すことにより、本発明の効果を発現することが可能となった。
本発明の開封片用フィルムの製造方法は、塩化ビニリデン系樹脂を含有する開封片用フィルムを製造する方法であって、少なくとも下記工程を順に有することを特徴とする。
１．塩化ビニリデン系樹脂組成物を溶融押出する工程
２．前記溶融押出された組成物を延伸によりフィルムとし緩和する工程
３．前記緩和したフィルムを加熱ロールにより再緩和する工程
１．溶融押出する工程、２．延伸によりフィルムとし緩和する工程の各工程においては、通常の溶融押出方法、たとえばインフレーション二軸延伸法を採用することができ、本発明では３．加熱ロールにより再緩和工程を有することを特徴とする。
<Method for producing film for opening piece>
The present invention has made it possible to express the effects of the present invention by finding a new method for producing an opening piece film.
The manufacturing method of the film for opening pieces of this invention is a method of manufacturing the film for opening pieces containing vinylidene chloride resin, Comprising: It has the following process in order.
1. 1. Step of melt-extruding a vinylidene
＜溶融押出する工程及び延伸し緩和する工程＞
本発明においては、塩化ビニリデン系樹脂フィルムを製造する通常の方法を適用することができる。塩化ビニリデン系樹脂組成物を溶融押出する工程、次いで前記溶融押出された組成物を延伸によりフィルムとし緩和する工程を有している。
溶融押出法、延伸法としては、Ｔダイ法につぐテンター法、インフレーション法等があり、本発明では溶融押出後インフレーション法により延伸することが好ましい。インフレーション法は設備そのものが簡易であり、小さな金型から幅の広いフィルムを製造できる。
<Process for melt extrusion and process for stretching and relaxation>
In the present invention, a usual method for producing a vinylidene chloride resin film can be applied. A step of melt-extruding the vinylidene chloride resin composition, and then a step of relaxing the melt-extruded composition into a film by stretching.
Examples of the melt extrusion method and the stretching method include a tenter method, an inflation method, and the like following the T-die method. In the present invention, it is preferable to stretch by the inflation method after melt extrusion. The inflation method is simple in equipment and can produce a wide film from a small mold.
カール量の調整の点から、延伸倍率はＭＤ方向に２〜５倍、ＴＤ方向に２〜５倍が好ましく、緩和率はＭＤ方向が１〜２０％、ＴＤ方向が１〜２０％であることが好ましい。
＜加熱ロールにより再緩和する工程＞
From the viewpoint of adjusting the curl amount, the draw ratio is preferably 2 to 5 times in the MD direction and 2 to 5 times in the TD direction, and the relaxation rate is 1 to 20% in the MD direction and 1 to 20% in the TD direction. Is preferred.
<Step of re-relaxing with heating roll>
本発明の加熱ロールにより再緩和する工程では、延伸し緩和する工程で延伸後ＭＤ方向、ＴＤ方向にフィルムを緩和した後、加熱ロールに接触させることにより、再度ＭＤ方向、ＴＤ方向に緩和することを特徴とする。 In the step of re-relaxing with the heating roll of the present invention, the film is relaxed in the MD direction and TD direction after stretching in the stretching and relaxation step, and then relaxed in the MD direction and TD direction again by bringing it into contact with the heating roll. It is characterized by.
加熱ロールの温度はカール量の調整の点から、好ましくは８０〜１５０℃であり、より好ましくは、１００〜１４０℃である。同様の理由により緩和率はＭＤ方向が０．５〜３０％、好ましくは２〜２０％であり、ＴＤ方向が、０．５〜５０％、好ましくは１０〜４０％である。 The temperature of the heating roll is preferably 80 to 150 ° C., more preferably 100 to 140 ° C. from the viewpoint of adjusting the curl amount. For the same reason, the relaxation rate in the MD direction is 0.5 to 30%, preferably 2 to 20%, and the TD direction is 0.5 to 50%, preferably 10 to 40%.
加熱ロールとしては、例えばクロームメッキされた鉄製ロール等を使用することができる。 As the heating roll, for example, a chrome-plated iron roll or the like can be used.
このように加熱ロール緩和工程を有することにより、本発明の効果が顕著に得られるようになる。 Thus, by having a heating roll relaxation process, the effect of this invention comes to be acquired notably.
以下、実施例を示して本発明を更に具体的に説明するが、本発明の範囲は、これらの実施例に限定されるものではない。 EXAMPLES Hereinafter, although an Example is shown and this invention is demonstrated further more concretely, the scope of the present invention is not limited to these Examples.
［実施例１］
（包装体用母材フィルムの製造）
塩化ビニリデン（ＶＤ）および塩化ビニル（ＶＣ）の重合時におけるモノマー仕込み質量比（ＶＤ／ＶＣ）が８１／１９である共重合体（１００質量部）に、アセチルトリブチルサイトレート（ＡＴＢＣ）、ジブチルセバケート（ＤＢＳ）およびエポキシ化大豆油（ＥＳＢＯ）を合計８質量部配合し、さらにステアリン酸アミド、炭酸カルシウムおよびポリグリセリンモノベヘネートを合計０．３質量部加えて、ポリ塩化ビニリデン系樹脂組成物を得た。
次に、得られたポリ塩化ビニリデン系樹脂組成物を、直径９０ｍｍの押出機スクリューを用いて溶融押出した後、二軸延伸することにより、包装体用母材フィルムを得た。
[Example 1]
(Manufacture of base material film for packaging)
A copolymer (100 parts by mass) having a monomer charge mass ratio (VD / VC) of 81/19 during polymerization of vinylidene chloride (VD) and vinyl chloride (VC) was added to acetyltributyl citrate (ATBC), dibutyl seba A total of 8 parts by mass of Kate (DBS) and epoxidized soybean oil (ESBO) is added, and a total of 0.3 parts by mass of stearamide, calcium carbonate and polyglycerin monobehenate is added, and a polyvinylidene chloride resin composition Got.
Next, the obtained polyvinylidene chloride resin composition was melt-extruded using an extruder screw having a diameter of 90 mm, and then biaxially stretched to obtain a base material film for a package.
（開封片用フィルムの製造）
先ず、塩化ビニリデン（ＶＤ）および塩化ビニル（ＶＣ）の重合時におけるモノマー仕込み質量比（ＶＤ／ＶＣ）が８０／２０である共重合体（１００質量部）に、アセチルトリブチルサイトレート（ＡＴＢＣ）、ジブチルセバケート（ＤＢＳ）およびエポキシ化大豆油（ＥＳＢＯ）を合計８質量部配合し、さらにステアリン酸アミドおよび二酸化珪素を合計０．１質量部加えて、ポリ塩化ビニリデン系樹脂組成物を得た。
(Manufacture of film for opening pieces)
First, a copolymer (100 parts by mass) of monomer charge mass ratio (VD / VC) at the time of polymerization of vinylidene chloride (VD) and vinyl chloride (VC) is 80/20, acetyltributyl citrate (ATBC), A total of 8 parts by mass of dibutyl sebacate (DBS) and epoxidized soybean oil (ESBO) was blended, and a total of 0.1 parts by mass of stearamide and silicon dioxide was added to obtain a polyvinylidene chloride resin composition.
次に、得られたポリ塩化ビニリデン系樹脂組成物を、直径９０ｍｍの押出機スクリューを用いて溶融押出した後、インフレーション二軸延伸して（ＭＤ：２．７倍、ＴＤ：４．１倍）、ダブルフィルム（厚さ３０μｍのフィルムの２枚重ね）とし、ヒーター１４０℃設定でＭＤ方向に８％、ＴＤ方向に７％緩和した後、さらに、ハードクロムメッキされた直径２ｍの鉄製ロールを１１５℃に加熱し、送り出し速度４９．６ｍ／ｍｉｎ、巻き取り速度４６．４ｍ／ｍｉｎでフィルムを接触させる（接触長４．７ｍ）ことにより、ＭＤ方向に６．５％、ＴＤ方向に２５％緩和し、開封片用フィルムａを得た。 Next, the obtained polyvinylidene chloride resin composition was melt-extruded using an extruder screw having a diameter of 90 mm, and then subjected to inflation biaxial stretching (MD: 2.7 times, TD: 4.1 times). , A double film (two layers of 30 μm thick film) was made, and after heating was set at 140 ° C., 8% in the MD direction and 7% in the TD direction were relaxed. Heated to ℃ and brought into contact with the film at a feeding speed of 49.6 m / min and a winding speed of 46.4 m / min (contact length 4.7 m), thereby relaxing 6.5% in the MD direction and 25% in the TD direction. As a result, an opening piece film a was obtained.
（開封片付き筒状包装体の製造）
包装体用母材フィルムを幅８０ｍｍに裁断した。また、開封片用フィルムを幅２０ｍｍ長さ１３ｍｍに裁断し、開封片を作製した。超音波シールによって、母材フィルムに開封片（シール部形状は図３に示したように、開封片の下端捲り端から６ｍｍの位置に設けられている。）を溶融シールする（開封片用フィルム片を１２０℃、３０分間オーブン中で加熱処理した後に２３℃で２時間冷却したフィルムのカールの凹面が母材フィルムと対向するように溶融シールする）ことで、開封片付き母材フィルムを得た。
(Manufacture of tubular packaging with open pieces)
The base material film for packaging bodies was cut into a width of 80 mm. Moreover, the film for opening pieces was cut | judged to width 20mm and length 13mm, and the opening piece was produced. By ultrasonic sealing, the base material film is melt-sealed (sealing portion shape is provided at a position 6 mm from the lower end of the opening piece as shown in FIG. 3) (film for opening piece) The piece was heat-treated in an oven at 120 ° C. for 30 minutes and then cooled at 23 ° C. for 2 hours to melt and seal the curled concave surface of the film so as to face the base material film. Thus, a base material film with an open piece was obtained. .
開封片付き母材フィルムを筒状に成形しながら、充填物を自動充填包装機（クレハ社製、商品名：ＫＡＰ３０００型自動充填包装機）にて充填し、超音波シールによって開封片付き母材フィルムの端部を収束しつつ、補強テープを添えて溶融シールし、密封して筒状包装体を得た。
なお、筒状の開封片付き母材フィルムにおいては、折幅（円周の半分の長さ）が３６ｍｍ、カット長（筒状包装体から充填物を抜き取り、筒状の開封片付き母材フィルムを平らに押し広げて長手方向に測定した際の長さ）が２１０ｍｍ、質量が６５ｇとなるように条件を調整した。
While forming the base material film with an opening piece into a cylindrical shape, the filling material is filled with an automatic filling and packaging machine (trade name: KAP3000 type automatic filling and packaging machine manufactured by Kureha Co., Ltd.), and the base material film with the opening piece is sealed by ultrasonic sealing. While converging the ends, a reinforcing tape was attached and melt-sealed and sealed to obtain a cylindrical package.
In addition, in the base material film with a cylindrical opening piece, the folding width (half the length of the circumference) is 36 mm, and the cut length (the packing material is extracted from the cylindrical package, and the base material film with the cylindrical opening piece is flattened) The conditions were adjusted so that the length (measured in the longitudinal direction) was 210 mm and the mass was 65 g.
［実施例２］
開封片用フィルムの製造において、実施例１と同様にして溶融押出した後、二軸延伸し（ＭＤ：２．７倍、ＴＤ：４．１倍）、１４０℃でＭＤ方向に８％、ＴＤ方向に７％緩和した後、さらに、ハードクロムメッキされた直径２ｍの鉄製ロールを１１５℃に加熱し、送り出し速度４９．６ｍ／ｍｉｎ、巻き取り速度４３．９ｍ／ｍｉｎでそのドラムに接触させることによりＭＤ方向に１１．５％、ＴＤ方向に２１％緩和することにより、開封片用フィルムｂを得た。
母材フィルムおよび開封片付き筒状包装体は、実施例１と同様にして製造した。
[Example 2]
In the production of the film for opening pieces, it was melt-extruded in the same manner as in Example 1 and then biaxially stretched (MD: 2.7 times, TD: 4.1 times), 8% in the MD direction at 140 ° C., TD After relaxing by 7% in the direction, a 2 m diameter iron roll coated with hard chrome is heated to 115 ° C. and brought into contact with the drum at a feeding speed of 49.6 m / min and a winding speed of 43.9 m / min. To 11.5% in the MD direction and 21% in the TD direction to obtain an opening piece film b.
The base material film and the cylindrical package with the opening piece were produced in the same manner as in Example 1.
［比較例１］
開封片用フィルムの製造において、実施例１と同様にして溶融押出した後、二軸延伸し（ＭＤ：２．７倍、ＴＤ：４．１倍）、１４０℃でＭＤ方向に８％、ＴＤ方向に７％緩和した後、さらに、ハードクロムメッキされた直径２ｍの鉄製ロールを１１５℃に加熱し、送り出し速度４９．６ｍ／ｍｉｎ、巻き取り速度４９．５ｍ／ｍｉｎでそのドラムに接触させることによりＭＤ方向に０．２％、ＴＤ方向に２９％緩和することにより、開封片用フィルムｃを得た。
母材フィルムおよび開封片付き筒状包装体は、実施例１と同様にして製造した。
[Comparative Example 1]
In the production of the film for opening pieces, it was melt-extruded in the same manner as in Example 1 and then biaxially stretched (MD: 2.7 times, TD: 4.1 times), 8% in the MD direction at 140 ° C., TD After relaxing by 7% in the direction, a 2 m diameter iron roll coated with hard chrome is heated to 115 ° C. and brought into contact with the drum at a feeding speed of 49.6 m / min and a winding speed of 49.5 m / min. By relaxing 0.2% in the MD direction and 29% in the TD direction, a film c for opening pieces was obtained.
The base material film and the cylindrical package with the opening piece were produced in the same manner as in Example 1.
［捲れ高さと捲れ発生率の算出方法］
図３に示す溶着処理を施した開封片付き筒状包装体を１００本作製し、１２０℃で１５分間加熱処理を行い、処理後の開封片の捲れ端側の捲れを観察した。捲れは開封片を真横から観察し、筒状包装体から最も離れている箇所の高さを「捲れ高さ」とし、「捲れ高さ」が１ｍｍ以上ある場合を「捲れ有り」と認定した。１００本の内、捲れ有りと認定された本数から捲れ発生率を算出した。観察は２３℃５０％ＲＨの部屋で行った。
[Calculation method of drowning height and drowning incidence]
100 cylindrical packages with unsealed pieces subjected to the welding treatment shown in FIG. 3 were produced, and heat-treated at 120 ° C. for 15 minutes, and the twisted end side of the unsealed pieces after the treatment was observed. For drooling, the unsealed piece was observed from the side, and the height of the part farthest from the cylindrical package was defined as “drown height”, and the case where “drown height” was 1 mm or more was recognized as “drown”. The drought occurrence rate was calculated from the number of 100 recognized as having drowning. Observation was performed in a room at 23 ° C. and 50% RH.
［カール量］
開封片用フィルムから、２０ｍｍ×２０ｍｍのフィルム片を作製した。このフィルム片を１２０℃、３０分間オーブン中で加熱処理した後に取出し、２３℃で２時間冷却したフィルムの最大のカールのＲ（直径φ：ｍｍ）をカール量とした。観察は２３℃５０％ＲＨの部屋で行った。
A 20 mm × 20 mm film piece was prepared from the opening piece film. The film piece was taken out in an oven at 120 ° C. for 30 minutes and then taken out, and the maximum curl R (diameter φ: mm) of the film cooled at 23 ° C. for 2 hours was defined as a curl amount. Observation was performed in a room at 23 ° C. and 50% RH.
表１から本発明はカール量が小さく、捲れ発生率も低いことが確認できる。 From Table 1, it can be confirmed that the present invention has a small curl amount and a low occurrence rate of curling.
Claims (7)
１．塩化ビニリデン系樹脂組成物を溶融押出する工程
２．前記溶融押出された組成物を延伸によりフィルムとし緩和する工程
３．前記緩和したフィルムを加熱ロールにより再緩和する工程 A method for producing an opening piece film comprising a vinylidene chloride-based resin composition, comprising at least the following steps in order.
1. 1. Step of melt-extruding a vinylidene chloride resin composition 2. Relaxing the melt-extruded composition into a film by stretching. Step of re-relaxing the relaxed film with a heating roll
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