JPS6039696B2 - packaging film - Google Patents
packaging filmInfo
- Publication number
- JPS6039696B2 JPS6039696B2 JP51156979A JP15697976A JPS6039696B2 JP S6039696 B2 JPS6039696 B2 JP S6039696B2 JP 51156979 A JP51156979 A JP 51156979A JP 15697976 A JP15697976 A JP 15697976A JP S6039696 B2 JPS6039696 B2 JP S6039696B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- film
- properties
- sealing
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000012785 packaging film Substances 0.000 title claims description 5
- 229920006280 packaging film Polymers 0.000 title claims description 5
- 238000007789 sealing Methods 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 12
- 150000008051 alkyl sulfates Chemical class 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 9
- 229920001169 thermoplastic Polymers 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000002985 plastic film Substances 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 239000004627 regenerated cellulose Substances 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims 1
- 229920000728 polyester Polymers 0.000 claims 1
- 238000000034 method Methods 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 6
- 239000004416 thermosoftening plastic Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 125000003438 dodecyl group Chemical group [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])* 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- -1 sodium and potassium Chemical class 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- QLUXVUVEVXYICG-UHFFFAOYSA-N 1,1-dichloroethene;prop-2-enenitrile Chemical compound C=CC#N.ClC(Cl)=C QLUXVUVEVXYICG-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 125000002704 decyl group Chemical group [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])* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000007759 kiss coating Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 125000001421 myristyl 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])[H] 0.000 description 1
- 125000002347 octyl 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])[H] 0.000 description 1
- 125000000913 palmityl 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])[H] 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- XTUSEBKMEQERQV-UHFFFAOYSA-N propan-2-ol;hydrate Chemical compound O.CC(C)O XTUSEBKMEQERQV-UHFFFAOYSA-N 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- BTURAGWYSMTVOW-UHFFFAOYSA-M sodium dodecanoate Chemical compound [Na+].CCCCCCCCCCCC([O-])=O BTURAGWYSMTVOW-UHFFFAOYSA-M 0.000 description 1
- 229940082004 sodium laurate Drugs 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 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
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Landscapes
- Wrappers (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】 この発明は包装用フィルムに関する。[Detailed description of the invention] This invention relates to packaging films.
更に詳しくは、本発明は、再生セルロース、ポリオレフ
ィン、ポリエステル、ポリアミド等の熱可塑性プラスチ
ックフィルムの両面又は片面を防湿性、ガス遮断性およ
びヒートシール性を有する樹脂で被覆し、更にその両面
または片面にアルキル硫酸塩を塗布して耐スティック性
を改善した包装用フィルムに関する。More specifically, the present invention involves coating both or one side of a thermoplastic film such as regenerated cellulose, polyolefin, polyester, or polyamide with a resin having moisture-proofing properties, gas-barrier properties, and heat-sealing properties, and further coating both or one side of the thermoplastic film with a resin having moisture-proofing properties, gas-barrier properties, and heat-sealing properties. This invention relates to a packaging film coated with an alkyl sulfate to improve stick resistance.
従来、食品、薬品、その他一般包装用のフィルムに望ま
れる特性の一つにヒートシール性がある。Conventionally, heat sealability is one of the characteristics desired for films for food, medicine, and other general packaging.
このヒートシール性は、落着温度より高い温度に保たれ
た発熱体、例えばヒートシールバー・ヒートシールジヨ
ーズ、ヒートシールダイロール等を直接又は、緩衝物を
介してフィルムに庄接し、熱伝導により溶着（ヒートシ
ール）する場合におけるその溶着性を意味する。更にこ
のヒートシール（加熱溶着）に際しては、フィルムが半
溶融から溶融状態にあるので、フィルムが発熱体に貼着
することがあり、フィルムの特性としては、この粘着が
起こりにくいことが望まれる。この性質を耐スティック
と称しているが、前記ヒートシール性とは一般的には相
反する性質であり、両方の性質を適当に兼ね備えた、つ
まりヒートシール性をそこなわないで耐スティック性を
付与できるフィルムの開発が期待されていた。この発明
の発明者らは、種々研究した結果、防湿性、ガス遮断性
、ヒートシ−ル性を付与した熱可塑性プラスチックフィ
ルム、、アルキル硫酸塩を塗布することにより基本フィ
ルムに付与された性質ことにヒートシール性を維持し、
かつ基本フィルム自体の外観を含めた特性を維持し、そ
の上に耐スティックを改善した包装用フィルムを見出す
に至った。This heat-sealing property is achieved by attaching a heating element maintained at a temperature higher than the settling temperature, such as a heat-sealing bar, heat-sealing roller, heat-sealing die roll, etc., to the film directly or through a cushioning material to conduct thermal conduction. It means the weldability when welding (heat sealing). Furthermore, during this heat sealing (thermal welding), since the film is in a semi-molten to molten state, the film may stick to the heating element, and it is desirable that the film has characteristics that prevent this sticking from occurring. This property is called stick resistance, but it is generally a contradictory property to the heat sealability described above, and it is a property that appropriately combines both properties, that is, it provides stick resistance without impairing heat sealability. There were high hopes for the development of a film that could do this. As a result of various studies, the inventors of this invention discovered that a thermoplastic film with moisture-proofing properties, gas-barrier properties, and heat-sealing properties was obtained. Maintains heat sealability,
In addition, we have found a packaging film that maintains the properties of the basic film itself, including its appearance, and has improved stick resistance.
更にかかるこの発明のフィルムは、帯電防止性、防雲性
、すべり性の効果が付随的に付与される。また、塗布剤
として使用するァルキル硫酸塩は、一般に食品衛生上の
問題がなく、この発明のフィルムを食品関係の包装に使
用するときは利点となる。この発明によれば、基本フィ
ルムとして再生セルロース、ポリオレフイン、ポリエス
テル又はポリァミド等の熱可塑性プラスチックフィルム
が用いられる。Furthermore, the film of the present invention is additionally provided with antistatic properties, cloudproof properties, and slip properties. Furthermore, alkyl sulfates used as coating agents generally do not pose any food hygiene problems, which is an advantage when the film of the present invention is used for food-related packaging. According to the invention, a thermoplastic film such as regenerated cellulose, polyolefin, polyester or polyamide is used as the basic film.
その両面又は片面に防湿性、ガス遮断性およびヒートシ
ール性を有する樹脂被膜、例えば塩化ビニルー酢酸ビニ
ルー不飽和カルボン酸共重合樹脂あるいは塩化ビニリデ
ンーアクリロニトリル共重合樹脂等を強固に接着するよ
うに塗布される。この被膜上にアルキル硫酸塩を適当な
溶剤に溶解し塗布される。アルキル硫酸塩のアルキル基
としては、オクチル、デシル、ドデシル（ラウリル）、
テトラデシル、ヘキサデシル、オクタデシル等、および
それらの分枝鎖を有する基が含まれる。A resin coating having moisture-proofing properties, gas-barrier properties, and heat-sealing properties, such as vinyl chloride-vinyl acetate-unsaturated carboxylic acid copolymer resin or vinylidene chloride-acrylonitrile copolymer resin, is applied to both or one side of the film to ensure strong adhesion. Ru. An alkyl sulfate dissolved in a suitable solvent is applied onto this coating. The alkyl groups of alkyl sulfates include octyl, decyl, dodecyl (lauryl),
Included are tetradecyl, hexadecyl, octadecyl, etc., and groups having branched chains thereof.
更にアルキル硫酸塩の塩としては、ナトリウム、カリウ
ムなどのアルカリ金属の塩やマグネシウムのような土類
金属塩が含まれる。この中でラゥリル酸ナトリウムは陰
イオン性界面活性剤で乳化剤として多用されているが、
これを包装用の耐スティック性塗布剤として採用された
ことは未だかつて報告されていない。この発明における
防湿性、ガス遮断性およびヒートシール性を付与した熱
可塑性プラスチックフィルムのヒートシール性が耐ステ
ィック性コート剤により損なわれることがないようにす
るために、ァルキル硫酸塩の塗布層は固形分として通常
３〜１００柵／〆程度に調節するのがよい。Furthermore, the salts of alkyl sulfates include salts of alkali metals such as sodium and potassium, and salts of earth metals such as magnesium. Among these, sodium laurate is an anionic surfactant that is often used as an emulsifier.
It has never been reported that this has been used as a stick-resistant coating agent for packaging. In order to prevent the heat-sealability of the thermoplastic plastic film imparted with moisture-proofing, gas-barrier and heat-sealing properties in this invention from being impaired by the stick-resistant coating agent, the alkyl sulfate coating layer is solid. It is usually best to adjust the amount to about 3 to 100 per minute.
ァルキル硫酸塩の溶剤として好ましい例は、水ーィソブ
ロピルアルコール（以下ＩＰＡと略す）の混合溶媒であ
る。ＩＰＡは消泡剤の役目と、防湿性等付与の熱可塑性
プラスチックフィルムとアルキル硫酸塩との親和性を高
めるのに役立つであろう。混合比率は水−ＩＰＡ（８０
：２０）を後述の実施例に示したが、これに限定されな
い。溶解さすアルキル硫酸塩の濃度はグラビアロールで
転写する場合、０．２〜１０％望ましくは１％が適当で
ある。上述のアルキル硫酸塩の溶液をこの発明のプラス
チックフィルムに塗布する方法は、エアーナイフ方式、
ノズル散布方式、プラスチックフィルムをディップして
両面にコートするディツプ方式、グラビアロールを使用
する印刷方式、リバースロールあるいは、キスコーテイ
ング、ドクターロール方式スクイズロール方式等の何れ
を使用してもよいが、均一に塗布することが肝要である
。又、塗布した後、赤外線ヒータ、熱風ヒータその他の
通常の乾燥方式により溶剤が完全に除去される。この発
明のフィルムは食品、薬品その他一般包装の何れにも使
用されるが、特にヒートシール面が大きい及び／又はヒ
ートシール圧力が高いストップ包装用に効果を発揮する
。なお、この発明のフィルムは特にすべり性が良好であ
る場合によっては微粉末シリカ（Ｓｉｏ２）、炭酸カル
シウム（ＣａＣ０３）等を塗布液に添加して調節すれば
よい。A preferred example of the solvent for the alkyl sulfate is a mixed solvent of water and isopropyl alcohol (hereinafter abbreviated as IPA). IPA may serve as an antifoaming agent and increase the compatibility of the alkyl sulfate with the thermoplastic film that provides moisture resistance. The mixing ratio is water-IPA (80
:20) is shown in the Examples below, but is not limited thereto. When transferring with a gravure roll, the concentration of the dissolved alkyl sulfate is preferably 0.2 to 10%, preferably 1%. The method of applying the alkyl sulfate solution described above to the plastic film of the present invention includes an air knife method,
Any of the following methods may be used: a nozzle spraying method, a dip method in which plastic film is dipped to coat both sides, a printing method using a gravure roll, a reverse roll, a kiss coating, a doctor roll, a squeeze roll, etc. It is important to apply it. After coating, the solvent is completely removed by using an infrared heater, hot air heater, or other conventional drying method. The film of the present invention can be used for food, medicine, and other general packaging, but is particularly effective for stop packaging with a large heat-sealing surface and/or high heat-sealing pressure. If the film of the present invention has particularly good slip properties, it may be adjusted by adding finely powdered silica (Sio2), calcium carbonate (CaC03), etc. to the coating solution.
次にこの発明を実施例によって説明する。Next, the present invention will be explained with reference to examples.
実施例 １〜３
まず、ラウリル硫酸ナトリウム（ＮａＬｓ）０．４重基
部を水／インプロピルアルコール（８０′２０）の混合
溶媒９９．６部に溶解し、塗布液とする。Examples 1 to 3 First, 0.4 parts of sodium lauryl sulfate (NaLs) is dissolved in 99.6 parts of a mixed solvent of water/impropyl alcohol (80'20) to prepare a coating solution.
次いでこの塗布液を表−１に示したフィルムの片面ある
いは両面に、グラビアロール（１５０メッシュ，深度約
２８一）を用いて、均一に塗布し、乾燥した。そして耐
スティック性の測定を行った。この測定法は次の通りで
ある。横型三方シール製袋機にＮａＬＳ塗布面をヒート
シール板に当るように当該フィルムを通して、連続的に
ヒートシール板の空打ちを行い、順次ヒートシール坂の
温度を上げてゆき、スティック（ヒートシール板にフィ
ルムが粘着する）し始める温度を読みとる。Next, this coating solution was uniformly applied to one or both sides of the films shown in Table 1 using a gravure roll (150 mesh, depth of about 28 mm), and dried. Then, stick resistance was measured. This measurement method is as follows. Pass the film through a horizontal three-sided seal bag making machine so that the NaLS-coated surface is in contact with the heat-seal plate, and then continuously dry-beat the heat-seal plate. Read the temperature at which the film starts to stick).
ステイックし始める温度が高い程、熱貼着性が少なく加
工適性が優れている。なお、製袋機として西部機械製〔
ＫＳ−２０７型〕を用い、シール時間は０．乳砂であっ
た。比較例 １〜２
実施例１〜３と同様な測定をＮａＬＳ非塗布品について
各々行つた。The higher the temperature at which the material starts to stick, the less the thermal adhesion and the better the processability. The bag making machine manufactured by Seibu Kikai [
KS-207 type], and the sealing time was 0. It was milk sand. Comparative Examples 1 to 2 Measurements similar to those in Examples 1 to 3 were performed on products not coated with NaLS.
この結果も表一１に並記した。実施例 ４〜６
実施例１〜３で得られたフィルムに４０山の低密度ポリ
エチレンフィルムをラミネートした（Ｎａは）が片面塗
布のものは、その反対面にラミネートする）複合フィル
ムについて、タテピ。The results are also listed in Table 1. Examples 4 to 6 Composite films in which 40 low-density polyethylene films were laminated to the films obtained in Examples 1 to 3 (Na is coated on one side, and those coated on one side are laminated on the opposite side) were tested vertically.
−型製袋機で、乾燥菓子の包装テストを行った。〔製袋
条件〕ヒートシール温度：サイドシール部 １５０
００天地シール部 １４０ｑ○毅 袋 速 度
：４の袋／分
製 袋 機 名 ：東京自動車機械製
〔ＴＷＳ−２型〕
ヒートシール面：ポリエチレン／ポリエチレン〔判定方
法〕ヒートシール板にフィルムが貼着する（スティック
する）ため、フィルム送りが円滑でなくなり、そのため
に切断位置がずれたもの及びヒートシール部がヒートシ
ール板への粘着のため、剥離現象を起しているものを不
良品とし、１０母袋中の不良率を算出した。A dry confectionery packaging test was carried out using a - type bag making machine. [Bag making conditions] Heat sealing temperature: Side seal part 150
00 top and bottom seal part 140q○ Takeshi bag speed
: 4 bags/minute bag making Machine name: Tokyo Jidosha Kikai [TWS-2 type] Heat sealing surface: Polyethylene/polyethylene [Judgment method] The film sticks to the heat sealing plate, so the film feed is difficult. Items that were no longer smooth and the cutting position was shifted due to this, and items that had peeled off due to adhesion of the heat-sealed portion to the heat-seal plate were considered to be defective items, and the percentage of defective items among the 10 mother bags was calculated.
比較例 ３〜４
実施例４〜６と同様なテストを非Ｎａは塗布フィルムに
ついて行った。Comparative Examples 3-4 Tests similar to Examples 4-6 were conducted on non-Na coated films.
この結果も表−２に併記した。（表一１）
備考 ヒートシール性については何れも問題なく良好で
あった。This result is also listed in Table-2. (Table 1) Remarks Heat sealability was good without any problems.
なお、（ ）内は商品名を示す。（表一２）Note that the number in parentheses indicates the product name. (Table 1 2)
Claims (1)
ポリアミド等の熱可塑性プラスチツクフイルムの両面又
は片面を防湿性、ガス遮断性およびヒートシール性を有
する樹脂で被覆し、更にその両面又は片面に炭素数８〜
１８のアルキル硫酸塩を塗布して耐ステイツク性を改善
したことを特徴とする包装用フイルム。1 Regenerated cellulose, polyolefin, polyester,
Both sides or one side of a thermoplastic plastic film such as polyamide is coated with a resin having moisture-proofing properties, gas-barrier properties, and heat-sealing properties, and furthermore, both sides or one side are coated with a resin having carbon atoms of 8 to 8.
A packaging film characterized in that it has improved stick resistance by coating with No. 18 alkyl sulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51156979A JPS6039696B2 (en) | 1976-12-24 | 1976-12-24 | packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51156979A JPS6039696B2 (en) | 1976-12-24 | 1976-12-24 | packaging film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5379693A JPS5379693A (en) | 1978-07-14 |
| JPS6039696B2 true JPS6039696B2 (en) | 1985-09-07 |
Family
ID=15639503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51156979A Expired JPS6039696B2 (en) | 1976-12-24 | 1976-12-24 | packaging film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6039696B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6484864A (en) * | 1987-09-21 | 1989-03-30 | Toho Kako Kk | Food packaging film and packaging method |
-
1976
- 1976-12-24 JP JP51156979A patent/JPS6039696B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5379693A (en) | 1978-07-14 |
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