JP6343238B2 - Oxygen absorber - Google Patents
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- JP6343238B2 JP6343238B2 JP2015017402A JP2015017402A JP6343238B2 JP 6343238 B2 JP6343238 B2 JP 6343238B2 JP 2015017402 A JP2015017402 A JP 2015017402A JP 2015017402 A JP2015017402 A JP 2015017402A JP 6343238 B2 JP6343238 B2 JP 6343238B2
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- oxygen absorbent
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims description 127
- 229910052760 oxygen Inorganic materials 0.000 title claims description 127
- 239000001301 oxygen Substances 0.000 title claims description 127
- 239000006096 absorbing agent Substances 0.000 title claims description 9
- 239000002250 absorbent Substances 0.000 claims description 94
- 230000002745 absorbent Effects 0.000 claims description 94
- 238000004806 packaging method and process Methods 0.000 claims description 80
- 235000013305 food Nutrition 0.000 claims description 63
- 239000005022 packaging material Substances 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 28
- 229910001868 water Inorganic materials 0.000 claims description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 25
- -1 polyethylene Polymers 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 18
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 15
- 239000012785 packaging film Substances 0.000 claims description 15
- 229920006280 packaging film Polymers 0.000 claims description 15
- 229920006255 plastic film Polymers 0.000 claims description 14
- 239000002985 plastic film Substances 0.000 claims description 14
- 239000002356 single layer Substances 0.000 claims description 14
- 230000035699 permeability Effects 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 239000004745 nonwoven fabric Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 229960005070 ascorbic acid Drugs 0.000 claims description 7
- 150000002894 organic compounds Chemical class 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 229910001882 dioxygen Inorganic materials 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 5
- 235000010323 ascorbic acid Nutrition 0.000 claims description 5
- 239000011668 ascorbic acid Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 229910021536 Zeolite Inorganic materials 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 4
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 4
- 239000010457 zeolite Substances 0.000 claims description 4
- 229920000298 Cellophane Polymers 0.000 claims description 3
- 229920002978 Vinylon Polymers 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000010455 vermiculite Substances 0.000 claims description 3
- 229910052902 vermiculite Inorganic materials 0.000 claims description 3
- 235000019354 vermiculite Nutrition 0.000 claims description 3
- 238000004643 material aging Methods 0.000 claims description 2
- 238000007740 vapor deposition Methods 0.000 claims description 2
- 239000000123 paper Substances 0.000 description 27
- 238000010521 absorption reaction Methods 0.000 description 13
- 239000003795 chemical substances by application Substances 0.000 description 11
- 238000007789 sealing Methods 0.000 description 7
- CIWBSHSKHKDKBQ-DUZGATOHSA-N D-isoascorbic acid Chemical compound OC[C@@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-DUZGATOHSA-N 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000004831 Hot glue Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000009920 food preservation Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000002211 L-ascorbic acid Substances 0.000 description 2
- 235000000069 L-ascorbic acid Nutrition 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000002506 iron compounds Chemical class 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012858 packaging process Methods 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 1
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 235000012216 bentonite Nutrition 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001622 calcium bromide Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- WGEFECGEFUFIQW-UHFFFAOYSA-L calcium dibromide Chemical compound [Ca+2].[Br-].[Br-] WGEFECGEFUFIQW-UHFFFAOYSA-L 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- SHFGJEQAOUMGJM-UHFFFAOYSA-N dialuminum dipotassium disodium dioxosilane iron(3+) oxocalcium oxomagnesium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Na+].[Na+].[Al+3].[Al+3].[K+].[K+].[Fe+3].[Fe+3].O=[Mg].O=[Ca].O=[Si]=O SHFGJEQAOUMGJM-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000010350 erythorbic acid Nutrition 0.000 description 1
- 239000004318 erythorbic acid Substances 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 229940026239 isoascorbic acid Drugs 0.000 description 1
- OTCKOJUMXQWKQG-UHFFFAOYSA-L magnesium bromide Chemical compound [Mg+2].[Br-].[Br-] OTCKOJUMXQWKQG-UHFFFAOYSA-L 0.000 description 1
- 229910001623 magnesium bromide Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
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- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Gas Separation By Absorption (AREA)
- Laminated Bodies (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
- Packages (AREA)
Description
本発明は、密封包装内に食品と共に封入して用いる酸素吸収剤に関する。 The present invention relates to an oxygen absorbent which is used by being enclosed with food in a sealed package.
食品と共に包装体内に封入して食品の変性、変色、酸化等による劣化を防止するための酸素吸収剤が広く用いられている。代表的な酸素吸収剤としては、鉄等を主剤とする無機系のものと、アスコルビン酸等を主剤とする有機系のものが知られており、食品の種類や目的によってこれらの酸素吸収剤が使い分けられている。 2. Description of the Related Art Oxygen absorbers that are enclosed in a package together with food to prevent the food from being deteriorated, discolored, oxidized or the like are widely used. Typical oxygen absorbers are known to be inorganic based on iron or the like and organic based on ascorbic acid or the like. Depending on the type and purpose of the food, these oxygen absorbents It is used properly.
また、酸素吸収剤の反応様式としては、水分を剤自体に含有する自力反応型と水分を共存する食品からの水蒸気として得ることにより反応する水分依存型に分類されている。このような酸素吸収剤は、従来、食品包装体内に単に投入する形で利用されてきたが、食品との混同を招きやすく、場合によっては、消費者が誤食してしまうおそれがあった。そのため、近年においては、酸素吸収剤を食品包装袋の内面にホットメルト接着剤や両面テープによって貼着し、誤食等の発生を防止する取組みがなされている。 In addition, the reaction mode of the oxygen absorbent is classified into a self-reactive type that contains water in the agent itself and a moisture-dependent type that reacts by obtaining water vapor from food that coexists with water. Conventionally, such oxygen absorbents have been used in the form of simply being put into food packaging, but they are likely to be confused with food, and in some cases, the consumer may accidentally eat. For this reason, in recent years, efforts have been made to prevent the occurrence of accidental eating by attaching an oxygen absorbent to the inner surface of a food packaging bag with a hot melt adhesive or a double-sided tape.
一方、食品の包装形態としては、食の個食化などの進展により、個別包装が増加する傾向にある。個別包装は、自動包装機によって行われているが、その中でもピロー包装機による個別包装が主流となっている。 On the other hand, as a packaging form of food, individual packaging tends to increase due to progress such as a single meal. Individual packaging is performed by an automatic packaging machine, and among these, individual packaging by a pillow packaging machine is the mainstream.
ピロー包装機による包装方法は、概ね以下のように説明できる。原反ロールに巻き取られた帯状フィルムを連続して製袋器に供給し、製袋器を通過させることによりフィルムが筒状に丸められ、端部が重ね合わされる。そして、製袋器の下流側に配置されたセンターシール装置にて、重ね合わされたフィルム端部をシールすることにより筒状フィルムを形成する。また、この製袋器の上流側には食品搬送供給装置を配置し、その食品搬送供給装置から所定間隔毎に搬送される食品が、製袋器内に供給される。これにより、食品が製袋器内を通過すると、筒状フィルム内に所定間隔毎に収納されることになり、その食品は筒状フィルムとともに搬送される。そして、ピロー包装機の搬出側に配置されたエンドシール装置にて、筒状フィルムを所定間隔毎に横方向に横断するようにシール・カットすることにより、食品を内包する包装体が製造される。 The packaging method by the pillow packaging machine can be generally described as follows. The belt-shaped film wound around the raw roll is continuously supplied to the bag making machine, and the film is rolled into a cylindrical shape by passing through the bag making machine, and the end portions are overlapped. And a cylindrical film is formed by sealing the overlapped film edge part with the center seal apparatus arrange | positioned in the downstream of a bag making machine. Moreover, the food conveyance supply apparatus is arrange | positioned in the upstream of this bag making machine, and the food conveyed from the food conveyance supply apparatus for every predetermined interval is supplied in a bag making apparatus. Thereby, if a foodstuff passes the inside of a bag making machine, it will be accommodated in a cylindrical film for every predetermined interval, and the foodstuff will be conveyed with a cylindrical film. And the package which encloses a foodstuff is manufactured by sealing and cutting so that a cylindrical film may be transversely crossed every predetermined space | interval with the end seal apparatus arrange | positioned at the carrying-out side of the pillow packaging machine. .
このようなピロー包装により、食品の個別包装を行う場合、前述の酸素吸収剤の食品包装袋内面への貼着が内容物たる食品の供給と同時に行われている。 When food is individually packaged by such pillow packaging, the aforementioned oxygen absorbent is stuck to the inner surface of the food packaging bag simultaneously with the supply of the food as the contents.
係る包装体を製造する場合、原反ロールから製袋器に至る帯状フィルムの搬送経路において、包装体の内面となる帯状フィルムの内面中央付近に酸素吸収剤を貼着することで、食品包装袋内面に酸素吸収剤が貼り付けられた包装体を製造することができる。しかし、この方法により製造される包装体は、酸素吸収剤が食品包装袋の正面側内面へ貼着されるため、食品包装袋の表面に印刷された商品名などと共に酸素吸収剤の存在が顕在化することで商品の美観を損ね、また、消費者に不安感を与えることがあった。 When manufacturing such a package, a food packaging bag can be obtained by sticking an oxygen absorbent near the center of the inner surface of the strip film that is the inner surface of the package in the transport path of the strip film from the raw roll to the bag making machine. A package with an oxygen absorbent attached to the inner surface can be produced. However, in the package manufactured by this method, since the oxygen absorbent is adhered to the inner surface on the front side of the food packaging bag, the presence of the oxygen absorbent along with the product name printed on the surface of the food packaging bag is obvious. In some cases, the aesthetics of the product are impaired, and the consumer is anxious.
そのため、近年、ピロー包装により食品の個別包装を行う場合、帯状フィルムの内面端部付近に酸素吸収剤を貼着することで、酸素吸収剤を食品包装袋の背面側内面に位置させる場合が増加している。 Therefore, in recent years, when individually packaging food by pillow packaging, the oxygen absorbent is often placed on the back side inner surface of the food packaging bag by sticking the oxygen absorbent near the inner edge of the strip film. doing.
しかしながら、ピロー包装において、包装袋の背面側内面、すなわちセンターシール側の内面に酸素吸収剤を貼着する場合、包装フィルムがピロー包装機の製袋器（フォーマー）によって筒状に形成される際、包装フィルムの酸素吸収剤貼着部分が急激に変形するため、酸素吸収剤が脱落することがあった。また、筒状フィルム形成時に脱落しなかった場合でも、酸素吸収剤がセンターシール側の内面に移行する際、食品との接触により脱落することがあった。さらに、食品が饅頭等の比較的柔らかい物である場合には、貼着された酸素吸収剤が食品に損傷を与えることがあった。特に酸素吸収剤が自力反応型である場合、水を保持させるための保水材を含有するため、水分依存型の酸素吸収剤に比べ内剤量が多く、小袋が厚くなるために、上記問題の発生が顕著であった。 However, in pillow packaging, when an oxygen absorbent is attached to the inner surface on the back side of the packaging bag, that is, the inner surface on the center seal side, the packaging film is formed into a cylindrical shape by a bag making machine (former) of the pillow packaging machine. The oxygen absorbent sticking part of the packaging film is deformed rapidly, so that the oxygen absorbent may fall off. Moreover, even when it did not fall off at the time of cylindrical film formation, when the oxygen absorbent moved to the inner surface on the center seal side, it might fall off due to contact with food. Furthermore, when the food is a relatively soft object such as a bun, the adhered oxygen absorbent may damage the food. In particular, when the oxygen absorbent is self-reactive, it contains a water retention material for retaining water, so the amount of internal agent is larger than the moisture-dependent oxygen absorbent and the sachet is thick. Occurrence was remarkable.
このような問題を解決するために、これまでにも酸素吸収剤をセンターシール側内面へ貼着させる提案がなされている。例えば、特許文献１には、包装袋内面にシート状鮮度保持剤を貼着している包装体が記載されている。しかし、特許文献１に記載されるようなシート状鮮度保持剤は、ラベル状となっているため、酸素の吸収が片面のみからとなり、酸素吸収速度の点で劣る上、自力反応型酸素吸収剤のように内剤量が多く、嵩高いタイプの酸素吸収剤には適さないものであった。 In order to solve such problems, proposals have been made so far to attach an oxygen absorbent to the inner surface on the center seal side. For example, Patent Document 1 describes a package in which a sheet-like freshness-keeping agent is adhered to the inner surface of a packaging bag. However, since the sheet-like freshness-keeping agent as described in Patent Document 1 is in the form of a label, the oxygen absorption is only on one side, and the oxygen absorption rate is inferior, and the self-reactive oxygen absorber Thus, the amount of the internal agent was large, and it was not suitable for a bulky type oxygen absorbent.
従って、ピロー包装による背面貼着においても、脱落や食品に対する損傷が発生しない酸素吸収剤が望まれていた。 Therefore, there has been a demand for an oxygen absorbent that does not drop off or damage food even when attached to the back surface by pillow packaging.
本発明は、食品をピロー包装する際に包装袋のセンターシール側内面へ貼着する酸素吸収剤であって、包装工程中に脱落や食品に対する損傷が生じにくく、且つ、優れた食品保存効果を発揮する酸素吸収剤を提供することを目的とする。 The present invention is an oxygen absorbent that sticks to the center seal side inner surface of a packaging bag when a food is pillow-wrapped, and is unlikely to drop off or damage food during the packaging process, and has an excellent food preservation effect. It aims at providing the oxygen absorber which exhibits.
本発明者等は、酸素吸収剤の包装袋について鋭意研究した結果、特定の材料からなる積層フィルムを用い、周縁部に形成されたヒートシール部の強度を調整して包装袋を構成すると共に酸素吸収組成物の充填率を調整することにより、ピロー包装の際に生じる酸素吸収剤の脱落や食品に対する損傷などの不具合が解消されることを見出し、本発明を完成させるに至った。 As a result of diligent research on the oxygen absorbent packaging bag, the present inventors use a laminated film made of a specific material, adjust the strength of the heat seal portion formed at the peripheral portion, and configure the packaging bag as well as oxygen. By adjusting the filling rate of the absorbent composition, it has been found that problems such as dropping off of the oxygen absorbent and damage to foods that occur during pillow packaging are eliminated, and the present invention has been completed.
すなわち本発明は、以下の包材Ａ及び包材Ｂを積層して成るシートを、包材Ｂの内面同士が対向するようにシートの周縁部を熱接着して構成された包装袋の中に、（ａ）鉄粉または還元性有機化合物、（ｂ）アルカリ性化合物および（ｃ）水を含有する酸素吸収組成物を封入してなる酸素吸収剤であって、熱接着により包装袋の周縁部に形成されたヒートシール部のこわさ値（縦）が３〜１０ｍＮ、こわさ値（横）が１〜５ｍＮである酸素吸収剤を提供する。
包材Ａ：紙または不織布
包材Ｂ：ポリエチレン、ポリエステル、ポリプロピレン、ナイロン、ビニロン、セロファンおよび蒸着フィルムからなる群から選択される有孔単層プラスチックフィルム、または酸素ガス透過度が５０００ｍｌ／ｍ２・２４ｈ・ａｔｍ以上の無孔単層プラスチックフィルム
That is, in the present invention, a sheet formed by laminating the following packaging material A and packaging material B is placed in a packaging bag configured by thermally bonding the peripheral edge of the sheet so that the inner surfaces of the packaging material B face each other. , (A) an oxygen absorbent comprising an oxygen absorbing composition containing iron powder or a reducing organic compound, (b) an alkaline compound, and (c) water, which is bonded to the peripheral edge of the packaging bag by thermal bonding. An oxygen absorbent having a stiffness value (vertical) of 3 to 10 mN and a stiffness value (horizontal) of 1 to 5 mN of the formed heat seal part is provided.
Wrapping material A: Paper or non-woven fabric Wrapping material B: Perforated single layer plastic film selected from the group consisting of polyethylene, polyester, polypropylene, nylon, vinylon, cellophane and vapor deposition film, or oxygen gas permeability of 5000 ml / m 2. Non-porous single layer plastic film of 24h · atm
また、本発明は、ピロー包装により作成される食品包装袋のセンターシール側内面に相当する製袋前の包装フィルム上の位置に上記の酸素吸収剤を貼着する工程、および該酸素吸収剤が貼着された包装フィルムを用いて食品をピロー包装する工程を含む食品の包装方法を提供する。 The present invention also includes a step of attaching the oxygen absorbent to a position on the packaging film before bag making corresponding to the center seal side inner surface of a food packaging bag made by pillow packaging, and the oxygen absorbent Provided is a food packaging method including a step of pillow-wrapping food using an attached packaging film.
さらに、本発明は、ピロー包装により作成される食品包装袋のセンターシール側内面に相当する製袋前の包装フィルム上の位置に上記の酸素吸収剤を貼着する工程、および該酸素吸収剤が貼着された包装フィルムを用いて食品をピロー包装する工程を含む食品包装体の製造方法、ならびに該方法により製造される食品包装体を提供する。 Furthermore, the present invention provides a process for attaching the oxygen absorbent to a position on a packaging film before bag making corresponding to the center seal side inner surface of a food packaging bag made by pillow packaging, and the oxygen absorbent Provided are a method for producing a food package including a step of pillow-wrapping food using an attached packaging film, and a food package produced by the method.
本発明の酸素吸収剤の包装袋は、包材Ａと包材Ｂとを積層したシートで構成され、包材Ｂの内面同士が対向するように周縁部で接着されている。包装袋の内部には、鉄粉または還元性有機化合物のいずれかと、アルカリ性化合物および水を含有する酸素吸収組成物が充填されている。 The oxygen absorbent packaging bag of the present invention is composed of a sheet in which the packaging material A and the packaging material B are laminated, and is bonded at the periphery so that the inner surfaces of the packaging material B face each other. The inside of the packaging bag is filled with either an iron powder or a reducing organic compound, an oxygen absorbing composition containing an alkaline compound and water.
包材Ａは、紙または不織布であり、採用可能な紙としては、耐油紙、耐水紙、耐水耐油紙、和紙、洋紙、レイヨン紙、化繊布、レイヨンと化繊布の混合紙、耐油剤または耐水剤を塗布した紙などが挙げられ、その中でも耐油紙、耐水紙、耐水耐油紙が好ましい。 The packaging material A is paper or non-woven fabric, and usable papers are oil-resistant paper, water-resistant paper, water-resistant and oil-resistant paper, Japanese paper, paper, rayon paper, chemical fiber, mixed paper of rayon and chemical fiber, oil resistant agent or water resistant Examples include paper coated with an agent, among which oil-resistant paper, water-resistant paper, and water-resistant and oil-resistant paper are preferable.
また、包材Ａに採用可能な不織布としては、ポリエチレンテレフタレート、ポリオレフィン、各種ナイロン等の材質からなるものが挙げられる。ポリエチレンテレフタレートは単一成分であってもイソフタル酸等を含んだ共重合体であってもよい。またポリオレフィンは、ポリエチレン、ポリプロピレン等の単一成分であっても、エチレン、プロピレン、ブテン、ヘキセンおよびオクテン等のオレフィン類との共重合体であってもよく、また、オレフィン以外の成分との共重合体であってもよい。その中でも不織布としては２軸延伸ポリプロピレンからなるものが好ましい。 Moreover, as a nonwoven fabric employable as the packaging material A, what consists of materials, such as a polyethylene terephthalate, polyolefin, various nylon, is mentioned. Polyethylene terephthalate may be a single component or a copolymer containing isophthalic acid or the like. The polyolefin may be a single component such as polyethylene or polypropylene, or a copolymer with olefins such as ethylene, propylene, butene, hexene and octene, or a copolymer with components other than olefins. It may be a polymer. Among them, the nonwoven fabric is preferably made of biaxially oriented polypropylene.
紙または不織布は、いずれも目付量が１５〜７０ｇ／ｍ２のものが好ましく、２０〜５０ｇ／ｍ２のものがより好ましい。紙または不織布の目付量が１５ｇ／ｍ２未満の場合はヒートシール時に破損するおそれがあり、７０ｇ／ｍ２を超える場合はヒートシールによる製袋が困難となる傾向がある他、ピロー包装時に食品に対する損傷が発生し易くなる傾向がある。 The paper or nonwoven fabric preferably has a basis weight of 15 to 70 g / m 2 , more preferably 20 to 50 g / m 2 . If the basis weight of paper or non-woven fabric is less than 15 g / m 2 , there is a risk of breakage during heat sealing. If it exceeds 70 g / m 2 , it tends to be difficult to make bags by heat sealing, and food during pillow packaging Damage tends to occur.
包材Ｂに使用されるプラスチックフィルムとしては、ポリエチレン、ポリエステル、ポリプロピレン、ナイロン、ビニロン、セロファン、およびアルミ、酸化アルミまたはシリカの蒸着フィルムからなる群から選択される単層フィルムが例示され、その中でも強度、ヒートシール性およびコストバランスの点で優れた、ポリエチレン、ポリエステル、延伸ポリプロピレンおよび無延伸ポリプロピレンが好ましく使用される。特に、包材Ｂに使用される単層プラスチックフィルムとしては、直鎖状低密度ポリエチレンがより好ましく使用される。包材Ｂとしてこれらの単層プラスチックフィルムを採用する場合には、貫通孔を穿設した有孔フィルム（以下、有孔単層プラスチックフィルムとも称する）を用いる。貫通孔の穿設方法としては、例えば針、加熱針、剣山状の金属ブラシ金型、レーザー光等を用いた方法を採用し得る。また、包材Ｂは、酸素ガス透過度が５０００ｍｌ／ｍ２・２４ｈ・ａｔｍ以上、好ましくは８０００〜１０００００ｍｌ／ｍ２・２４ｈ・ａｔｍの無孔単層プラスチックフィルムであってもよい。かかる酸素ガス透過度を有する無孔単層プラスチックフィルムとしては、エチレン−酢酸ビニル共重合体が例示される。包材Ｂとしては、酸素吸収速度の点で、直鎖状低密度ポリエチレンに貫通孔を穿設したものが最も好ましい。 Examples of the plastic film used for the packaging material B include polyethylene, polyester, polypropylene, nylon, vinylon, cellophane, and a single-layer film selected from the group consisting of aluminum, aluminum oxide, and silica deposited films. Polyethylene, polyester, stretched polypropylene and unstretched polypropylene, which are excellent in terms of strength, heat sealability and cost balance, are preferably used. In particular, as the single-layer plastic film used for the packaging material B, linear low density polyethylene is more preferably used. When these single-layer plastic films are employed as the packaging material B, a perforated film having a through hole (hereinafter also referred to as a perforated single-layer plastic film) is used. As a method for forming the through hole, for example, a method using a needle, a heating needle, a sword mountain-shaped metal brush mold, a laser beam, or the like may be employed. Further, the packaging material B is an oxygen gas permeability 5000ml / m 2 · 24h · atm or more, preferably be a non-porous single layer plastic film 8000~100000ml / m 2 · 24h · atm . An example of the non-porous single-layer plastic film having such oxygen gas permeability is an ethylene-vinyl acetate copolymer. The packaging material B is most preferably a material in which a through hole is formed in a linear low density polyethylene in terms of oxygen absorption rate.
包材Ｂとして用い得る有孔単層プラスチックフィルムの貫通孔の孔径及び孔数は、酸素吸収剤のサイズおよび包材Ａの透気度によって適宜定めればよいが、包材Ａと包材Ｂを積層したシートのガーレー式透気度が２０００ｓ／１００ｍｌ以下、好ましくは５〜１５００ｓ／１００ｍｌとなるように、孔径及び孔数を設定するのが良い。包材Ａと包材Ｂを積層したシートの透気度が５ｓ／１００ｍｌ未満である場合、酸素吸収剤の投入作業中に酸素を吸収してしまい、食品と共に封入された後の酸素吸収能が低下する傾向がある。 The hole diameter and the number of holes of the perforated single-layer plastic film that can be used as the packaging material B may be determined as appropriate depending on the size of the oxygen absorbent and the air permeability of the packaging material A. The hole diameter and the number of holes may be set so that the Gurley type air permeability of the laminated sheet is 2000 s / 100 ml or less, preferably 5 to 1500 s / 100 ml. When the air permeability of the sheet obtained by laminating the packaging material A and the packaging material B is less than 5 s / 100 ml, oxygen is absorbed during the operation of introducing the oxygen absorbent, and the oxygen absorption capacity after being encapsulated with food There is a tendency to decrease.
本明細書において、「酸素ガス透過度」とは、ガス透過率測定装置を用いて、ＪＩＳ Ｋ ７１２６に準拠した方法により測定される値をいう。 In this specification, “oxygen gas permeability” refers to a value measured by a method in accordance with JIS K 7126 using a gas permeability measuring device.
本明細書において、「ガーレー式透気度」はＪＩＳ Ｐ８１１７に準拠して王研式透気度試験機（旭精工（株）製）を用いて測定される透気度の値をいう。 In this specification, “Gurley type air permeability” refers to a value of air permeability measured using a Oken type air permeability tester (manufactured by Asahi Seiko Co., Ltd.) in accordance with JIS P8117.
適当な酸素吸収速度を達成するためには、有孔単層プラスチックフィルムの開孔率を０．００１〜１０％、好ましくは０．０１〜７％、より好ましくは０．０３〜５％とするのが良く、例えば、酸素吸収組成物０．２〜０．４ｇ程度を含有し、サイズが２×３ｃｍの酸素吸収剤の場合、孔径２００μｍ未満、好ましくは１５０μｍ未満、より好ましくは１０〜１００μｍの孔を１平方センチメートルあたり５〜５０個、好ましくは１０〜３０個程度穿設するとよい。 In order to achieve an appropriate oxygen absorption rate, the aperture ratio of the perforated single-layer plastic film is 0.001 to 10%, preferably 0.01 to 7%, more preferably 0.03 to 5%. For example, in the case of an oxygen absorbent containing about 0.2 to 0.4 g of an oxygen absorbing composition and having a size of 2 × 3 cm, the pore diameter is less than 200 μm, preferably less than 150 μm, more preferably 10 to 100 μm. About 5 to 50 holes per square centimeter, preferably about 10 to 30 holes may be formed.
貫通孔の形状についても限定されるものではないが、酸素吸収剤の包装袋の強度の点で円形または楕円形が好ましい。 The shape of the through hole is not limited, but a circular or elliptical shape is preferable from the viewpoint of the strength of the oxygen absorbent packaging bag.
包材Ａの厚さは、５〜１００μｍであることが好ましく、１５〜９０μｍであることがより好ましく、２５〜８０μｍであることがさらに好ましい。包材Ａの厚みが５μｍ未満の場合には酸素吸収剤の強度が不十分となる傾向があり、１００μｍを超える場合には酸素の吸収が阻害され、食品の保存効果が不十分になる傾向がある他、ピロー包装時に食品に対する損傷が発生し易くなる傾向がある。 The thickness of the packaging material A is preferably 5 to 100 μm, more preferably 15 to 90 μm, and still more preferably 25 to 80 μm. When the thickness of the wrapping material A is less than 5 μm, the strength of the oxygen absorbent tends to be insufficient, and when it exceeds 100 μm, the absorption of oxygen is inhibited and the food preservation effect tends to be insufficient. In addition, there is a tendency that food damage is likely to occur during pillow packaging.
包材Ｂに使用する有孔または無孔の単層プラスチックフィルムの厚みは、５〜６０μｍであることが好ましく、７〜５０μｍであることがより好ましく、１０〜４５μｍであることがさらに好ましい。単層プラスチックフィルムの厚みが５μｍ未満の場合には酸素吸収剤の強度が不十分となる傾向があり、６０μｍを超える場合には酸素の吸収が阻害され、食品の保存効果が不十分になる傾向がある他、ピロー包装時に食品に対する損傷が発生し易くなる傾向がある。 The thickness of the perforated or non-porous single-layer plastic film used for the packaging material B is preferably 5 to 60 μm, more preferably 7 to 50 μm, and still more preferably 10 to 45 μm. When the thickness of the single-layer plastic film is less than 5 μm, the strength of the oxygen absorbent tends to be insufficient, and when it exceeds 60 μm, oxygen absorption is hindered and the food preservation effect tends to be insufficient. In addition, there is a tendency that damage to the food tends to occur during pillow packaging.
本発明の酸素吸収剤の包装袋に使用し得る積層シートの例としては、厚さ６０〜７５μｍ、目付量２５〜４５ｇ／ｍ２の耐油紙、耐水紙または耐水耐油紙（包材Ａ）と厚さ１５〜４０μｍ、開孔率０．０３〜５％の直鎖状低密度ポリエチレン、ポリエステルまたはポリプロピレン（包材Ｂ）を積層したもの、および、厚さ５０〜６５μｍ、目付量２５〜４５ｇ／ｍ２の耐油紙、耐水紙または耐水耐油紙（包材Ａ）と厚さ１５〜４０μｍ、酸素ガス透過度１００００〜１３０００ｍｌ／ｍ２・２４ｈ・ａｔｍのエチレン−酢酸ビニル共重合体（無孔）（包材Ｂ）を積層したもの等が挙げられる。 Examples of the laminated sheet that can be used for the oxygen absorbent packaging bag of the present invention include an oil-resistant paper, water-resistant paper or water-resistant oil-resistant paper (wrapping material A) having a thickness of 60 to 75 μm and a basis weight of 25 to 45 g / m 2. 15 to 40 μm in thickness, 0.03 to 5% linear low density polyethylene, polyester or polypropylene (packaging material B) laminated, and a thickness of 50 to 65 μm, basis weight 25 to 45 g / m 2 oil resistant paper, water resistant paper or water resistant oil resistant paper (wrapping material A) and ethylene-vinyl acetate copolymer (non-porous) having a thickness of 15 to 40 μm and oxygen gas permeability of 10,000 to 13000 ml / m 2 · 24 h · atm The thing etc. which laminated | stacked (wrapping material B) are mentioned.
上記の包材Ａ及び包材Ｂを積層して成るシートは、引張強度（縦）が２０〜５０ＭＰａであることが好ましく、２５〜４５ＭＰａであることがより好ましく、３０〜４０ＭＰａであることがさらに好ましい。また、該シートの引張強度（横）が５〜３５ＭＰａであることが好ましく、１０〜３０ＭＰａであることがより好ましく、１４〜２５ＭＰａであることがさらに好ましい。積層シートの引張強度（縦）が２０ＭＰａ未満であるかまたは引張強度（横）が５ＭＰａ未満である場合は、酸素吸収剤の強度が不十分となる傾向がある。積層シートの引張強度（縦）が５０ＭＰａを超えるかまたは引張強度（横）が３５ＭＰａを超える場合は、食品の保存効果が不十分になる傾向がある他、ピロー包装時に食品に対する損傷が発生し易くなる傾向がある。 The sheet formed by laminating the packaging material A and the packaging material B preferably has a tensile strength (longitudinal) of 20 to 50 MPa, more preferably 25 to 45 MPa, and further preferably 30 to 40 MPa. preferable. Moreover, it is preferable that the tensile strength (horizontal) of this sheet | seat is 5-35 MPa, It is more preferable that it is 10-30 MPa, It is further more preferable that it is 14-25 MPa. When the tensile strength (longitudinal) of the laminated sheet is less than 20 MPa or the tensile strength (lateral) is less than 5 MPa, the strength of the oxygen absorbent tends to be insufficient. If the tensile strength (longitudinal) of the laminated sheet exceeds 50 MPa or the tensile strength (horizontal) exceeds 35 MPa, the food storage effect tends to be insufficient, and damage to the food is likely to occur during pillow packaging. Tend to be.
本明細書において、引張強度とは、引張試験機を用いて、長さ２５０ｍｍ×幅５ｍｍの試験片を５ｍｍ／分の試験速度で測定し、試験片が破断した時点における引張応力の値をいう。引張強度を測定するために用い得る引張試験機としては、株式会社島津製作所製のオートグラフＡＧＳ−１０ｋＮＧ等が例示される。なお、引張強度（縦）とは、包材Ａ（紙または不織布）の流れ目（繊維の方向）と平行な方向における測定値を意味し、引張強度（横）とは、包材Ａの流れ目に対し直角の方向における測定値を意味する。 In this specification, the tensile strength means a value of tensile stress at the time when a test piece having a length of 250 mm and a width of 5 mm is measured at a test speed of 5 mm / min using a tensile tester and the test piece is broken. . Examples of the tensile tester that can be used to measure the tensile strength include Autograph AGS-10kNG manufactured by Shimadzu Corporation. The tensile strength (longitudinal) means a measured value in a direction parallel to the flow line (fiber direction) of the packaging material A (paper or non-woven fabric), and the tensile strength (horizontal) means the flow of the packaging material A. It means the measured value in the direction perpendicular to the eye.
本発明の酸素吸収剤の包装袋の周縁部は、ヒートシールにより接着される。ヒートシールによる製袋方法には折り込み三方シールおよび四方シールがあり、本発明においてはいずれの製袋方法でもよいが、様々なサイズの袋を効率良く製造できる点やヒートシール時のトラブルが少ない点で折り込み三方シール包装体とするのが好ましい。 The peripheral edge portion of the oxygen absorbent packaging bag of the present invention is bonded by heat sealing. There are folding three-side seals and four-side seals as bag making methods by heat sealing, and any bag making method may be used in the present invention, but there are few troubles at the time of efficiently producing bags of various sizes and heat sealing. It is preferable to make a three-way sealed package by folding.
本発明の酸素吸収剤の包装袋は、その周縁部に形成されたヒートシール部が特定のこわさ値（強度）を有するものである。 In the oxygen absorbent packaging bag of the present invention, the heat seal portion formed at the peripheral edge portion has a specific stiffness value (strength).
本明細書における「こわさ値」は、ガーレーこわさ試験機を用いてＪ ＴＡＰＰＩ Ｎｏ．４０（荷重曲げ法による紙及び板紙のこわさ試験方法（ガーレー法））に準拠した方法によって測定される値を意味する。こわさ値（縦）とは、包材Ａ（紙または不織布）の流れ目（繊維の方向）と平行な方向における測定値を意味し、こわさ値（横）とは、包材Ａの流れ目に対し直角の方向における測定値を意味する。 The “stiffness value” in the present specification is determined using a Gurley stiffness tester using J TAPPI No. It means a value measured by a method in accordance with 40 (paper and paperboard stiffness test method (Gurley method) by load bending method). The stiffness value (longitudinal) means a measured value in a direction parallel to the flow (fiber direction) of the packaging material A (paper or non-woven fabric), and the stiffness value (horizontal) means the flow of the packaging material A. It means a measured value in a direction perpendicular to the direction.
本発明において、酸素吸収剤の包装袋の周縁部に形成されたヒートシール部のこわさ値は、こわさ値（縦）が３〜１０ｍＮ、且つ、こわさ値（横）が１〜５ｍＮであればよい。また、該ヒートシール部は、こわさ値（縦）が４〜９ｍＮ、且つ、こわさ値（横）が１．５〜４．５ｍＮであることが好ましく、こわさ値（縦）が５〜８ｍＮ、且つ、こわさ値（横）が２〜４ｍＮであることがより好ましい。こわさ値（縦）が３ｍＮ未満、またはこわさ値（横）が１ｍＮ未満である場合、酸素吸収剤が強度不足により破袋する頻度が高くなり、こわさ値（縦）が１０ｍＮを超えるかまたはこわさ値（横）が５ｍＮを超える場合、酸素吸収剤が柔軟性を欠き、ピロー包装時に酸素吸収剤の脱落や食品に対する損傷が発生する頻度が高くなる。 In the present invention, the stiffness value of the heat seal portion formed on the peripheral edge of the oxygen absorbent packaging bag may be 3 to 10 mN in stiffness value (vertical) and 1 to 5 mN in stiffness value (horizontal). . The heat seal part preferably has a stiffness value (vertical) of 4 to 9 mN, a stiffness value (horizontal) of 1.5 to 4.5 mN, a stiffness value (vertical) of 5 to 8 mN, and The stiffness value (horizontal) is more preferably 2 to 4 mN. If the stiffness value (longitudinal) is less than 3 mN, or the stiffness value (horizontal) is less than 1 mN, the oxygen absorber will break more frequently due to insufficient strength, and the stiffness value (vertical) will exceed 10 mN or the stiffness value. When (horizontal) exceeds 5 mN, the oxygen absorbent lacks flexibility, and the frequency of dropping of the oxygen absorbent and damage to food during the pillow packaging increases.
尚、本明細書に規定したこわさ値を測定するために用い得るガーレーこわさ試験機としては、例えば、熊谷理機工業株式会社製のガーレーステフネステスター Ｎｏ．２０４９−Ｄ等が例示される。 In addition, as a Gurley stiffness tester that can be used to measure the stiffness value defined in this specification, for example, Garlace Tefness Tester No. manufactured by Kumagai Riki Kogyo Co., Ltd. 2049-D etc. are illustrated.
本発明の酸素吸収剤の包装袋においてヒートシール部が占める面積は特に限定されないが、酸素吸収剤を平らに置いた時の上面（酸素吸収組成物による膨らみは考慮せず平面とみなす）の面積のうち好ましくは２５〜６５％、より好ましくは３５〜５５％、さらに好ましくは４０〜５０％である。 The area occupied by the heat seal portion in the oxygen absorbent packaging bag of the present invention is not particularly limited, but is the area of the upper surface when the oxygen absorbent is placed flat (considering swelling due to the oxygen absorbent composition and considered as a plane) Among these, Preferably it is 25-65%, More preferably, it is 35-55%, More preferably, it is 40-50%.
本発明の酸素吸収剤の厚みは特に限定されないが、酸素吸収組成物を包含する中央部の最大厚みをＸ（ｍｍ）とし、酸素吸収剤の長辺（正方形の場合はいずれかの辺）方向の長さをＹ（ｍｍ）とした場合に、Ｘ／Ｙの値が１／６以下であることが好ましく、１／８以下であることがより好ましく、１／１０〜１／３０であることがさらに好ましい。 Although the thickness of the oxygen absorbent of the present invention is not particularly limited, the maximum thickness of the central portion including the oxygen absorbent composition is X (mm), and the long side of the oxygen absorbent (one side in the case of a square) direction When the length is Y (mm), the value of X / Y is preferably 1/6 or less, more preferably 1/8 or less, and 1/10 to 1/30. Is more preferable.
本発明の酸素吸収剤は、主剤として鉄粉または還元性有機化合物を含有すると共に、アルカリ性化合物および水を含有するものである。 The oxygen absorbent of the present invention contains an iron powder or a reducing organic compound as a main agent, and also contains an alkaline compound and water.
主剤として用い得る鉄粉は、例えばガス還元された還元鉄粉、海綿状の噴霧鉄粉、高密度電流で生成する電解鉄粉などの鉄粉、および鋳鉄、鋼、鉄合金等の鉄製品を粉砕したものが挙げられる。また、この鉄粉は、不純物を含むものあるいは部分的に酸化されたものであってもよい。 The iron powder that can be used as the main agent is, for example, iron powder such as reduced iron powder reduced by gas, sponge-like sprayed iron powder, electrolytic iron powder generated by high-density current, and iron products such as cast iron, steel, and iron alloys. A pulverized one is mentioned. The iron powder may contain impurities or may be partially oxidized.
また、鉄粉の比表面積は好ましくは０.０５ｍ２／ｇ以上、より好ましくは０.１ｍ２／ｇ以上であり、鉄粉の平均粒径は好ましくは３０〜３００μｍ、より好ましくは３５〜１５０μｍである。鉄粉の比表面積が０.０５ｍ２／ｇ未満の場合は、錆の発生は少ないが低温における酸素吸収能が劣る傾向がある。鉄粉の平均粒径が３００μｍを超える場合は、酸素吸収速度が低下し、平均粒径が３０μｍ未満の場合は、他成分との混合が不均一となり、また粉塵等により作業性が著しく低下する傾向がある。 The specific surface area of the iron powder are preferably 0.05 m 2 / g or more, more preferably 0.1 m 2 / g or more, an average particle size of the iron powder are preferably 30 to 300 [mu] m, more preferably 35~150μm It is. When the specific surface area of the iron powder is less than 0.05 m 2 / g, the generation of rust is small, but the oxygen absorption ability at low temperatures tends to be poor. When the average particle size of the iron powder exceeds 300 μm, the oxygen absorption rate decreases, and when the average particle size is less than 30 μm, the mixing with other components becomes non-uniform, and the workability is remarkably reduced due to dust or the like. Tend.
主剤として用い得る還元性有機化合物としては、アスコルビン酸、グリセリン、カテコール等が挙げられ、その中でもアスコルビン酸が好ましい。アスコルビン酸は、Ｌ−アスコルビン酸の他、Ｄ−iso−アスコルビン酸(エリソルビン酸)を用いることができる。Ｌ−アスコルビン酸とＤ−iso−アスコルビン酸等、２種以上の還元性有機化合物を併用してもよい。 Examples of the reducing organic compound that can be used as the main agent include ascorbic acid, glycerin, catechol and the like, and among them, ascorbic acid is preferable. As for ascorbic acid, D-iso-ascorbic acid (erythorbic acid) can be used in addition to L-ascorbic acid. Two or more reducing organic compounds such as L-ascorbic acid and D-iso-ascorbic acid may be used in combination.
本発明の酸素吸収剤に用いるアルカリ性化合物は、アルカリ金属もしくはアルカリ土類金属の塩（ハロゲン化物および水酸化物を含む）である。アルカリ金属塩としては塩化ナトリウム、塩化カリウム、臭化ナトリウム、臭化カリウム等が挙げられ、アルカリ土類金属塩としては塩化マグネシウム、塩化カルシウム、臭化マグネシウム、臭化カルシウム、水酸化カルシウム等が挙げられる。また、２種以上のアルカリ性化合物を併用してもよい。 The alkaline compound used in the oxygen absorbent of the present invention is an alkali metal or alkaline earth metal salt (including halides and hydroxides). Examples of the alkali metal salt include sodium chloride, potassium chloride, sodium bromide and potassium bromide, and examples of the alkaline earth metal salt include magnesium chloride, calcium chloride, magnesium bromide, calcium bromide and calcium hydroxide. It is done. Two or more alkaline compounds may be used in combination.
本発明の酸素吸収剤において、酸素吸収作用を発現させるためには水が必要となるが、この水はどのような形で存在していてもよい。酸素吸収組成物に水を供給する方法としては、例えば、水を直接添加する方法、保水材に吸着ないし含浸させた形で添加する方法、他の成分中の結晶水として添加する方法等が挙げられるが、酸素吸収速度あるいは適応食品の広範さから、水を保水材に吸着ないし含浸させた形で酸素吸収組成物に含有させる方法が好ましい。この場合の水の割合は酸素吸収組成物全量の５〜５０重量％が好ましく、１０〜３５重量％がより好ましい。水の量が５重量％より少ないと酸素吸収能力が低下する傾向があり、飛散性も増大する。水の量が５０重量％より多い場合には酸素吸収組成物の流動性が悪化する傾向にある。 In the oxygen absorbent of the present invention, water is required to develop the oxygen absorbing action, but this water may be present in any form. Examples of the method for supplying water to the oxygen-absorbing composition include a method in which water is directly added, a method in which the water-absorbing material is adsorbed or impregnated, and a method in which water is added as crystallization water in other components. However, a method in which water is adsorbed or impregnated in a water-retaining material and contained in the oxygen-absorbing composition is preferable because of the oxygen absorption rate or the wide range of applicable foods. In this case, the proportion of water is preferably 5 to 50% by weight, more preferably 10 to 35% by weight based on the total amount of the oxygen-absorbing composition. If the amount of water is less than 5% by weight, the oxygen absorption capacity tends to decrease and the scattering property also increases. When the amount of water is more than 50% by weight, the fluidity of the oxygen-absorbing composition tends to deteriorate.
本発明の酸素吸収剤において、水を添加するために用いる保水材としては、ゼオライト、シリカ、焼成雲母、バーミキュライト、タルク、パーライト、ベントナイト、珪藻土、アルミナ、不織布、パルプ等、従来から酸素吸収剤に使用されているものを使用することができる。その中でもゼオライト、シリカ、焼成雲母、バーミキュライト、不織布およびパルプが好ましく、水の保水力の点でゼオライトおよびシリカがより好ましい。 In the oxygen absorbent of the present invention, as a water retention material used for adding water, zeolite, silica, calcined mica, vermiculite, talc, perlite, bentonite, diatomaceous earth, alumina, non-woven fabric, pulp, etc. are conventionally used as oxygen absorbents. You can use what is being used. Among these, zeolite, silica, calcined mica, vermiculite, non-woven fabric and pulp are preferable, and zeolite and silica are more preferable in terms of water retention capacity.
また、本発明の酸素吸収剤は、酸素吸収速度を向上させるために、反応促進物を含有するものであってもよい。本発明の酸素吸収剤に用い得る反応促進物は、活性炭ならびに遷移金属およびその塩からなる群より選択される物質である。遷移金属としては、鉄、銅、亜鉛、すずなどが挙げられる。反応促進効果及び安全性の点から、特に活性炭あるいは鉄を含む化合物（以下、鉄化合物という）が反応促進物として好ましい。鉄化合物としては第一鉄塩、第二鉄塩いずれであってもよく、あるいは有機酸との鉄塩であってもよい。具体的には、硫酸第一鉄、塩化第一鉄、硫酸第二鉄、塩化第二鉄等が例示される。これら反応促進物は２種以上を併用してもよい。 Further, the oxygen absorbent of the present invention may contain a reaction accelerator in order to improve the oxygen absorption rate. The reaction accelerator that can be used in the oxygen absorbent of the present invention is a substance selected from the group consisting of activated carbon and transition metals and salts thereof. Examples of the transition metal include iron, copper, zinc, and tin. From the viewpoint of the reaction promoting effect and safety, activated carbon or a compound containing iron (hereinafter referred to as iron compound) is particularly preferable as the reaction promoting substance. The iron compound may be either a ferrous salt or a ferric salt, or may be an iron salt with an organic acid. Specifically, ferrous sulfate, ferrous chloride, ferric sulfate, ferric chloride and the like are exemplified. Two or more of these reaction accelerators may be used in combination.
本発明の酸素吸収剤は、鉄粉または還元性有機化合物と、アルカリ性化合物および水、ならびに必要に応じて保水材および／または反応促進物を含有する酸素吸収組成物を、包材Ａおよび包材Ｂの積層シートで構成される包装袋の容積に対して、好ましくは３０〜９５体積％、より好ましくは５０〜８５体積％、さらに好ましくは６０〜７５体積％の充填率で封入することにより得られる。酸素吸収組成物の充填率が３０体積％未満の場合、酸素吸収能力が低くなる傾向があり、充填率が９５体積％を超える場合、ピロー包装時に酸素吸収剤の脱落や食品に対する損傷が発生し易い傾向がある。 The oxygen absorbent of the present invention comprises an oxygen absorbing composition containing iron powder or a reducing organic compound, an alkaline compound and water, and, if necessary, a water retention material and / or a reaction accelerator, a packaging material A and a packaging material. Preferably obtained by enclosing at a filling rate of 30 to 95% by volume, more preferably 50 to 85% by volume, and even more preferably 60 to 75% by volume with respect to the volume of the packaging bag composed of the laminated sheet of B. It is done. When the filling rate of the oxygen absorbing composition is less than 30% by volume, the oxygen absorbing ability tends to be low. When the filling rate is more than 95% by volume, the oxygen absorbent may fall off or damage to food may occur during pillow packaging. It tends to be easy.
本発明の酸素吸収剤は、ピロー包装機による食品の自動包装において、食品包装袋の背面側内面、すなわちセンターシール側の内面に酸素吸収剤を貼着する場合に特に好適に用いられる。ピロー包装機には、横ピロー包装機（正ピロー包装機および逆ピロー包装機）と縦ピロー包装機があるが、いずれの包装機であってもよい。 The oxygen absorbent according to the present invention is particularly preferably used in the automatic packaging of food by a pillow packaging machine when the oxygen absorbent is adhered to the inner surface on the back side of the food packaging bag, that is, the inner surface on the center seal side. The pillow packaging machine includes a horizontal pillow packaging machine (a normal pillow packaging machine and a reverse pillow packaging machine) and a vertical pillow packaging machine, and any packaging machine may be used.
本発明が提供する食品の包装方法および食品包装体の製造方法は、上述した特徴を有する本発明の酸素吸収剤を包装フィルム内面に貼着する事を特徴とする。かかる方法は、製袋前の包装フィルム内面の端部（具体的にはピロー包装後の食品包装袋のセンターシール側内面に相当する位置）に本発明の酸素吸収剤を貼着し、該包装フィルムを用いて食品をピロー包装するものである。かかる方法により、自力反応型酸素吸収剤等の嵩高い酸素吸収剤を、ピロー包装の工程中における脱落や食品との接触を起こすことなくピロー包装体のセンターシール側内面に位置させることができる。
製袋前の包装フィルム上において酸素吸収剤を貼着させる位置は、食品および包装体の形状やサイズ等に応じて適宜決定できる。酸素吸収剤を貼着するタイミングは、包装フィルムが製袋される前であれば特に限定されない。酸素吸収剤の貼着手段は特に限定されないが、例えばホットメルト接着剤や両面テープを用いることができる。
The food packaging method and the food packaging manufacturing method provided by the present invention are characterized in that the oxygen absorbent of the present invention having the above-described characteristics is adhered to the inner surface of a packaging film. Such a method is obtained by sticking the oxygen absorbent of the present invention to the end of the inner surface of the packaging film before bag making (specifically, the position corresponding to the inner surface on the center seal side of the food packaging bag after pillow packaging) Food is pillow-wrapped using a film. By such a method, a bulky oxygen absorbent such as a self-reactive oxygen absorbent can be positioned on the inner surface on the center seal side of the pillow package without causing dropout or contact with food during the pillow packaging process.
The position where the oxygen absorbent is pasted on the packaging film before bag making can be appropriately determined according to the shape and size of the food and the package. The timing for sticking the oxygen absorbent is not particularly limited as long as the packaging film is before bag making. The means for attaching the oxygen absorbent is not particularly limited, and for example, a hot melt adhesive or a double-sided tape can be used.
以下、実施例により本発明をさらに説明するが、本発明は実施例に記載の態様に限定されるものではない。 EXAMPLES Hereinafter, although an Example demonstrates this invention further, this invention is not limited to the aspect as described in an Example.
実施例１〜２及び比較例１〜２
こわさ値測定試験
表１に示す積層シート１〜４を用い、包材Ｂの内面同士が対向するように重ね、１４０℃に設定したアイロンで熱接着した後、２インチ（約５１ｍｍ）×３．５インチ（約８９ｍｍ）に切断し、試験片１〜４を製造した。
得られた試験片をガーレーこわさ試験機（ガーレーステフネステスター Ｎｏ．２０４９−Ｄ、熊谷理機工業株式会社製）を用い、Ｊ ＴＡＰＰＩ Ｎｏ．４０（荷重曲げ法による紙及び板紙のこわさ試験方法（ガーレー法））に準拠した方法により、こわさ値（縦）およびこわさ値（横）を測定した。各こわさ値は、５回測定し、その平均値を測定値とした。結果を表２に示す。
尚、シート１〜４の引張強度は、長さ２５０ｍｍ、幅５ｍｍの試験片を作成し、２３℃、５０％ＲＨの環境下で８８時間静置した後、株式会社島津製作所製オートグラフＡＧＳ−１０ｋＮＧを用いて、標線間距離１００ｍｍ、試験速度５ｍｍ／分の条件で測定し、５回の測定の平均値を引張強度とした（表１）。
Examples 1-2 and Comparative Examples 1-2
Stiffness value measurement test Using the laminated sheets 1 to 4 shown in Table 1, the packaging material B is overlapped so that the inner surfaces thereof face each other and thermally bonded with an iron set at 140 ° C., then 2 inches (about 51 mm) × 3. It cut | disconnected to 5 inches (about 89 mm), and manufactured the test pieces 1-4.
Using the Gurley stiffness tester (Garlace Tefness Tester No. 2049-D, manufactured by Kumagai Riki Kogyo Co., Ltd.) The stiffness value (vertical) and stiffness value (horizontal) were measured by a method based on 40 (paper bending test method for paper and paperboard (Gurley method)). Each stiffness value was measured five times, and the average value was taken as the measured value. The results are shown in Table 2.
In addition, the tensile strength of the sheets 1 to 4 is a test piece having a length of 250 mm and a width of 5 mm, and left to stand in an environment of 23 ° C. and 50% RH for 88 hours, and then Autograph AGS- manufactured by Shimadzu Corporation. Using 10 kNG, measurement was performed under the conditions of a distance between marked lines of 100 mm and a test speed of 5 mm / min, and the average value of five measurements was taken as the tensile strength (Table 1).
実施例３および比較例３
酸素吸収剤の製造
表３に示す組成の内剤（酸素吸収組成物）を十分に混合した後、表１に示すシート１または４で製造した小袋（２ｃｍ×３ｃｍ）に０．１３ｇ（充填率３０体積％）、０．３ｇ（充填率７０体積％）および０．４ｇ（充填率９５体積％）を封入して、各充填率につき１００個の酸素吸収剤（いずれも３方シール包装体）を製造した。
Example 3 and Comparative Example 3
Production of Oxygen Absorber After thoroughly mixing the internal agent (oxygen-absorbing composition) having the composition shown in Table 3, 0.13 g (filling rate) in a sachet (2 cm × 3 cm) produced with sheet 1 or 4 shown in Table 1 30% by volume), 0.3 g (filling rate 70% by volume) and 0.4g (filling rate 95% by volume) were enclosed, and 100 oxygen absorbents for each filling rate (both three-side sealed packages) Manufactured.
食品包装試験
上記の通りに製造した酸素吸収剤を、ピロー包装機に装着された塩化ビニリデンコートナイロン／ポリエチレン製の帯状フィルム（幅２５ｃｍ）の片方の端から３．５ｃｍの位置において、該帯状フィルムの長さ方向に１１．５ｃｍの間隔でホットメルト接着剤により貼着し、饅頭と共に１個ずつピロー包装した。得られた食品包装体について、酸素吸収剤の脱落、および饅頭に対する損傷の発生をカウントした。また、酸素吸収剤が適正に貼着された食品包装体において、袋内の酸素濃度が０．１００％以下となるまでに要する時間（以下、「酸素吸収時間」と表記）を食品用微量酸素分析計（ＩＳ−３００、飯島電子工業株式会社製）を用いて測定した。結果を表４に示す。
Food packaging test The oxygen absorbent produced as described above was used at a position of 3.5 cm from one end of a vinylidene chloride-coated nylon / polyethylene belt-like film (25 cm wide) mounted on a pillow packaging machine. In the length direction, the film was attached with a hot melt adhesive at an interval of 11.5 cm, and pillow-wrapped one by one with the wharf. About the obtained food packaging body, the fall of the oxygen absorbent and the occurrence of damage to the wharf were counted. In addition, the amount of time required for the oxygen concentration in the bag to become 0.100% or less (hereinafter referred to as “oxygen absorption time”) in the food packaging body in which the oxygen absorbent is properly attached is the trace amount of oxygen for food. Measurement was performed using an analyzer (IS-300, manufactured by Iijima Electronics Co., Ltd.). The results are shown in Table 4.
上記の結果より、本発明の酸素吸収剤は、包装フィルムの端部に貼着してピロー包装を行っても極めて脱落し難く、且つ、包装内の食品の損傷が極めて発生し難いものであることが確認された。 From the above results, the oxygen absorbent according to the present invention is extremely difficult to drop off even when it is attached to the end of a packaging film and pillow-wrapped, and damage to food in the packaging is extremely unlikely to occur. It was confirmed.
Claims (14)
包材Ａ：紙または不織布
包材Ｂ：ポリエチレン、ポリエステル、ポリプロピレン、ナイロン、ビニロン、セロファンおよび蒸着フィルムからなる群から選択される有孔単層プラスチックフィルム、または酸素ガス透過度が５０００ｍｌ／ｍ２・２４ｈ・ａｔｍ以上の無孔単層プラスチックフィルム A sheet formed by laminating the following packaging material A and packaging material B is placed in a packaging bag formed by thermally bonding the peripheral edges of the sheet so that the inner surfaces of the packaging material B face each other. An oxygen absorbent comprising an oxygen absorbing composition containing powder or a reducing organic compound, (b) an alkaline compound, and (c) water, wherein the heat seal is formed on the periphery of the packaging bag by thermal bonding The oxygen absorber whose stiffness value (vertical) is 3 to 10 mN and whose stiffness value (horizontal) is 1 to 5 mN.
Wrapping material A: Paper or non-woven fabric Wrapping material B: Perforated single layer plastic film selected from the group consisting of polyethylene, polyester, polypropylene, nylon, vinylon, cellophane and vapor deposition film, or oxygen gas permeability of 5000 ml / m 2. Non-porous single layer plastic film of 24h · atm
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| JPH03229610A (en) * | 1990-02-01 | 1991-10-11 | Ooe Kagaku Kogyo Kk | Sealing bag for adsorbent |
| JP3252866B2 (en) * | 1991-11-13 | 2002-02-04 | 三菱瓦斯化学株式会社 | Oxygen absorber |
| JP3149494B2 (en) * | 1991-12-19 | 2001-03-26 | 日本曹達株式会社 | Oxygen absorber |
| JPH09226843A (en) * | 1996-02-24 | 1997-09-02 | Mitsubishi Gas Chem Co Inc | Packing body and manufacturing device therefor, and manufacture of the packing body |
| JP3648323B2 (en) * | 1996-04-08 | 2005-05-18 | 株式会社常盤産業 | Method for producing iron-based oxygen absorbent |
| JP3921883B2 (en) * | 1999-07-28 | 2007-05-30 | 凸版印刷株式会社 | Laminated film for laminated tube |
| JP2002254542A (en) * | 2001-03-06 | 2002-09-11 | Idemitsu Unitech Co Ltd | Laminated sheet, moisture permeable sheet and container for dehumidification agent |
| JP2004115563A (en) * | 2002-09-24 | 2004-04-15 | Oji Paper Co Ltd | Pressure-sensitive adhesive sheet for recording |
| JP2005082163A (en) * | 2003-09-05 | 2005-03-31 | Sumitomo Bakelite Co Ltd | Cover tape for packaging electronic component |
| JP4686256B2 (en) * | 2005-05-25 | 2011-05-25 | 三菱樹脂株式会社 | Laminated porous film |
| JP4764839B2 (en) * | 2007-02-08 | 2011-09-07 | 大王製紙株式会社 | Process release paper |
| JP2011073744A (en) * | 2009-09-30 | 2011-04-14 | Mitsubishi Gas Chemical Co Inc | Oilproof deoxidizing agent packaging material |
| JP5511424B2 (en) * | 2010-02-12 | 2014-06-04 | 江崎グリコ株式会社 | Packaging bag |
| JP2011195185A (en) * | 2010-03-23 | 2011-10-06 | Powdertech Co Ltd | Non-iron system deoxidizer package |
| JP5931354B2 (en) * | 2011-06-09 | 2016-06-08 | フタムラ化学株式会社 | Film for gusset folded packaging bags |
| US9061800B2 (en) * | 2013-03-14 | 2015-06-23 | Carolyn Kay Jons | Bag for storage and removal of oxygen |
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