JPH0234979B2 - - Google Patents
Info
- Publication number
- JPH0234979B2 JPH0234979B2 JP57202023A JP20202382A JPH0234979B2 JP H0234979 B2 JPH0234979 B2 JP H0234979B2 JP 57202023 A JP57202023 A JP 57202023A JP 20202382 A JP20202382 A JP 20202382A JP H0234979 B2 JPH0234979 B2 JP H0234979B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- weight
- parts
- present
- resin
- 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 - Lifetime
Links
- 239000012785 packaging film Substances 0.000 claims description 11
- 229920006280 packaging film Polymers 0.000 claims description 11
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 8
- 239000005977 Ethylene Substances 0.000 claims description 8
- 229920001519 homopolymer Polymers 0.000 claims description 8
- -1 polyoxyethylene Polymers 0.000 claims description 5
- 239000011342 resin composition Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 125000005037 alkyl phenyl group Chemical group 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 3
- 229920005989 resin Polymers 0.000 description 19
- 239000011347 resin Substances 0.000 description 19
- 239000002736 nonionic surfactant Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 4
- 229920001684 low density polyethylene Polymers 0.000 description 4
- 239000004702 low-density polyethylene Substances 0.000 description 4
- 239000005033 polyvinylidene chloride Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 238000010411 cooking Methods 0.000 description 3
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- VBICKXHEKHSIBG-UHFFFAOYSA-N beta-monoglyceryl stearate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- HSEMFIZWXHQJAE-UHFFFAOYSA-N hexadecanamide Chemical compound CCCCCCCCCCCCCCCC(N)=O HSEMFIZWXHQJAE-UHFFFAOYSA-N 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- AUHZEENZYGFFBQ-UHFFFAOYSA-N mesitylene Substances CC1=CC(C)=CC(C)=C1 AUHZEENZYGFFBQ-UHFFFAOYSA-N 0.000 description 1
- 125000001827 mesitylenyl group Chemical group [H]C1=C(C(*)=C(C([H])=C1C([H])([H])[H])C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Description
本発明は包装用フイルムに関し、詳しくは自己
粘着性（ラツプ性）にすぐれ、しかもカツト性、
耐熱性、透明性にすぐれた包装用フイルムに関す
る。
従来、家庭用、業務用に用いられるいわゆるラ
ツプフイルムとしては、ポリ塩化ビニリデン樹脂
や高圧法低密度ポリエチレン樹脂を製膜してなる
フイルムが実用化されている。これらラツプフイ
ルムとしては、自己粘着性の他に使用時のカツト
性、強度、透明性、耐熱性などの性能が要求され
ている。
しかしながら、ポリ塩化ビニリデン樹脂や塩化
ビニル樹脂などは塩素を多量に含んでいるため、
焼却時に塩素ガスを発生したり、多量に含まれる
可塑性の有害性などが問題となつている。このた
め、このような問題点の少ない高圧法低密度ポリ
エチレン樹脂も使用されているが、これ自身自己
粘着性が非常に低く、種々の粘着付与剤を添加し
なければならないという欠点があると共に、カツ
ト性に劣る欠点がある。
また、ポリ塩化ビニリデン製ラツプフイルム
は、二軸延伸されているためカツト時に斜めに裂
けやすく、また電子レンジで加熱した場合など著
しく収縮する。一方、高圧法低密度ポリエチレン
製ラツプフイルムは耐熱性が十分ではなく、従つ
て近時めざましく普及している電子レンジで調
理、加熱する場合に使用すると、フイルムが溶融
して破損したり、あるいはフイルム同士が融着し
て破れたり溶融して容器などに付着したりする欠
点があるため、その用途は大幅に制限されてい
る。
これらの問題点を解消するものとして、高密度
ポリエチレン樹脂やポリプロピレン樹脂を用いる
ことも提案されている。しかし、これらは耐熱性
という点では満足できるものであるが、自己粘着
性やカツト性が十分でないという欠点を有してい
る。他方、エチレン−α−オレフイン共重合体に
高圧法低密度ポリエチレン樹脂を配合する方法
（特公昭54−25952号）や高圧法ポリオレフインを
積層する方法（特開昭55−41298号）が提案され
ている。
しかしながら、これらの方法で得られるフイル
ムは必ずしも自己粘着性、カツト性、耐熱性など
が十分でなく、包装用フイルムとしての機能を十
分に果たすことができないものであつた。
本発明はこれらの欠点を解消した包装用フイル
ムを提供することを目的とするものである。
すなわち本発明は、密度0.928〜0.940ｇ／cm3の
高圧法エチレン単独重合体100重量部に、ポリオ
キシエチレンアルキルフエニルエーテル0.5〜５
重量部を配合してなる樹脂組成物を製膜してなる
包装用フイルムを提供するものである。
本発明の第一成分として用いる高圧法エチレン
単独重合体としては、密度0.928〜0.940ｇ／cm3の
ものを用いることが本発明の特徴である。ここで
密度が0.928ｇ／cm3未満のものを用いたのでは、
フイルムの腰が弱いためカツト性が劣り、またフ
イルムをカツトした際や包装する際にフイルム同
志がまとわりついて作業性が阻害され、良好なラ
ツプフイルムを得ることができない。さらに、こ
のような密度0.928ｇ／cm3未満の高圧法エチレン
単独重合体を用いると、フイルムの耐熱性が劣
り、特に油性物質と接触した状態で加熱すると著
しく軟化して破れることが多い。従つて、電子レ
ンジを用いた食品の調理や再加熱の際の包装には
適さないものとなる。
密度0.928〜0.940ｇ／cm3の高圧法エチレン単独
重合体は通常、酸素、ベンゾイルパーオキサイ
ド、ラウロイルパーオキサイドなどの遊離基開始
剤を用いて公知の方法で製造されるものである。
ここで高圧法エチレン単独重合体のメルトインデ
ツクス（MI）としては、１〜10、好ましくは２
〜８の範囲のものが用いられる。
次に、第二成分としては、非イオン界面活性剤
のうちポリオキシエチレンアルキルフエニルエー
テル（以下、単に非イオン界面活性剤と言うこと
がある。）を用いる。
本発明の包装用フイルムに用いる樹脂組成物に
おける高圧法エチレン単独重合体と非イオン性界
面活性剤との配合比は、高圧法エチレン単独重合
体100重量部に対し、非イオン性界面活性剤0.5〜
５重量部の範囲で用いる。非イオン性界面活性剤
の配合量が0.5重量部未満であると、十分な自己
粘着性が得られず、また５重量部を超えるとフイ
ルム表面にブリードした非イオン性界面活性剤が
被包装物面に移行するので好ましくない。また、
非イオン性界面活性剤としては常温において液状
のものが好ましい。
なお、本発明にあつては上記第一成分および第
二成分を配合してなる樹脂組成物中に、必要によ
り適宜粘着付与剤、各種の添加剤や他の樹脂を加
えることもできる。
粘着付与剤としては分子量3000以下の比較的低
分子量の樹脂が用いられる。樹脂の具体例として
石油樹脂、テルペン樹脂、クマロン樹脂、クマロ
ン−インデン樹脂、キシレン樹脂、メシチレン樹
脂などのほか低重合度ポリオレフイン（ポリエチ
レン、ポリブテン、ポリイソブチレレンなど）を
挙げることができる。
また添加剤としては滑剤やアンチブロツキング
剤等が挙げられ、具体的にはステアリン酸カルシ
ウム、ステアリン酸バリウムなどの金属石けん、
ステアリン酸アミド、パルミチン酸アミドなどの
脂肪酸アミド、ステアリン酸モノグリセライドや
粉末シリカ、ケイ藻土、カオリン、タルクなどを
例示することができる。
本発明にあつては、これら樹脂組成物をＴ−ダ
イ法、インフレーシヨン法などの手段によつて溶
融押出製膜して目的とする包装用フイルムを得る
ことができる。ここでフイルムの厚みは６〜
50μ、好ましくは８〜20μである。
本発明の包装用フイルムは自己粘着性（ラツプ
性）にすぐれているとともに、鋸歯状カツター等
によるカツト性もすぐれている。しかも、耐熱性
にもすぐれており、電子レンジで調理、加熱する
場合に好適に使用することができる。さらに、本
発明の包装用フイルムは透明性や防曇性にすぐれ
ているばかりか、焼却廃棄時にポリ塩化ビニリデ
ン樹脂が塩化ビニル樹脂などのように塩素ガスを
発生することがなく、安全性が高いものである。
したがつて、本発明の包装用フイルムは、家庭
用、業務用ラツプフイルムとしてはもちろん、各
種ストレツチ包装用フイルムとして有用である。
次に本発明を実施例によつて説明する。
実施例１〜13および比較例１〜２
第１表に示す配合組成物を、Ｔ−ダイ方式フイ
ルム成形機（押出機50mmφ、Ｌ／Ｄ〕26、ダイス
500mm幅、ダイリツプ0.8mm）を用いてダイ温度
270℃で押出した後、30℃の水を通したチルロー
ルを介して100ｍ／minで引取り、厚み10〜14μの
フイルムを得た。なお、添加剤は８重量％のマス
ターバツチを用いて配合した。
得られたフイルムの物性、ラツプフイルムとし
ての性能評価結果を第１表に示す。
The present invention relates to a packaging film, and more specifically, it has excellent self-adhesiveness (wrappability), cuttability,
This invention relates to a packaging film with excellent heat resistance and transparency. Conventionally, films made from polyvinylidene chloride resin or high-pressure low-density polyethylene resin have been put into practical use as so-called wrap films used for household and commercial purposes. In addition to self-adhesiveness, these wrap films are required to have properties such as cuttability, strength, transparency, and heat resistance during use. However, polyvinylidene chloride resin and vinyl chloride resin contain large amounts of chlorine, so
Problems include the generation of chlorine gas when incinerated and the harmful nature of the plastic contained in large amounts. For this reason, high-pressure low-density polyethylene resins, which have fewer such problems, are also used, but they have the disadvantage that they themselves have very low self-adhesiveness and require the addition of various tackifiers. It has the disadvantage of poor cutability. In addition, polyvinylidene chloride wrap film is biaxially stretched, so it tends to tear diagonally when cut, and also shrinks significantly when heated in a microwave oven. On the other hand, wrap films made of high-pressure low-density polyethylene do not have sufficient heat resistance, so if they are used for cooking or heating in microwave ovens, which are becoming increasingly popular these days, the film may melt and break, or the films may break apart. Its use is severely limited because it can fuse and tear, or melt and adhere to containers, etc. In order to solve these problems, it has also been proposed to use high-density polyethylene resin or polypropylene resin. However, although these are satisfactory in terms of heat resistance, they have the disadvantage of insufficient self-adhesiveness and cuttability. On the other hand, a method of blending high-pressure low density polyethylene resin with ethylene-α-olefin copolymer (Japanese Patent Publication No. 54-25952) and a method of laminating high-pressure polyolefin (Japanese Patent Publication No. 55-41298) have been proposed. There is. However, the films obtained by these methods do not necessarily have sufficient self-adhesiveness, cuttability, heat resistance, etc., and cannot function satisfactorily as packaging films. The object of the present invention is to provide a packaging film that eliminates these drawbacks. That is, in the present invention, 0.5 to 5 parts by weight of polyoxyethylene alkyl phenyl ether is added to 100 parts by weight of a high-pressure ethylene homopolymer having a density of 0.928 to 0.940 g/ cm3 .
The object of the present invention is to provide a packaging film formed by forming a resin composition containing parts by weight. A feature of the present invention is that the high-pressure ethylene homopolymer used as the first component of the present invention has a density of 0.928 to 0.940 g/cm 3 . If a material with a density of less than 0.928 g/cm 3 is used here,
Since the film is weak, its cutting properties are poor, and when the film is cut or packaged, the films cling to each other, impeding workability and making it impossible to obtain a good wrapped film. Furthermore, if such a high-pressure ethylene homopolymer having a density of less than 0.928 g/cm 3 is used, the film will have poor heat resistance, and in particular, will often soften significantly and break when heated in contact with an oily substance. Therefore, it is not suitable for packaging when cooking or reheating food using a microwave oven. High-pressure ethylene homopolymers having a density of 0.928 to 0.940 g/cm 3 are usually prepared by known methods using oxygen and free radical initiators such as benzoyl peroxide or lauroyl peroxide.
Here, the melt index (MI) of the high-pressure ethylene homopolymer is 1 to 10, preferably 2.
-8 is used. Next, as the second component, among nonionic surfactants, polyoxyethylene alkyl phenyl ether (hereinafter sometimes simply referred to as nonionic surfactant) is used. The blending ratio of the high-pressure ethylene homopolymer and the nonionic surfactant in the resin composition used for the packaging film of the present invention is 0.5 parts by weight of the nonionic surfactant per 100 parts by weight of the high-pressure ethylene homopolymer. ~
It is used in a range of 5 parts by weight. If the amount of nonionic surfactant is less than 0.5 parts by weight, sufficient self-adhesiveness cannot be obtained, and if it exceeds 5 parts by weight, the nonionic surfactant that bleeds onto the surface of the film may cause damage to the packaged object. It is not preferable because it migrates to the surface. Also,
The nonionic surfactant is preferably one that is liquid at room temperature. In the present invention, a tackifier, various additives, and other resins may be added to the resin composition formed by blending the first component and the second component, if necessary. As the tackifier, a relatively low molecular weight resin having a molecular weight of 3000 or less is used. Specific examples of the resin include petroleum resins, terpene resins, coumaron resins, coumaron-indene resins, xylene resins, mesitylene resins, and low polymerization degree polyolefins (polyethylene, polybutene, polyisobutyrelene, etc.). Additives include lubricants, anti-blocking agents, etc. Specifically, metal soaps such as calcium stearate and barium stearate,
Examples include fatty acid amides such as stearic acid amide and palmitic acid amide, stearic acid monoglyceride, powdered silica, diatomaceous earth, kaolin, and talc. In the present invention, the desired packaging film can be obtained by melt-extruding these resin compositions by means such as the T-die method or the inflation method. Here, the thickness of the film is 6~
50μ, preferably 8-20μ. The packaging film of the present invention has excellent self-adhesiveness (wrappability) and also has excellent cuttability with a serrated cutter or the like. Moreover, it has excellent heat resistance and can be suitably used when cooking and heating in a microwave oven. Furthermore, the packaging film of the present invention not only has excellent transparency and antifogging properties, but also has high safety because polyvinylidene chloride resin does not generate chlorine gas unlike vinyl chloride resin when disposed of by incineration. It is something. Therefore, the packaging film of the present invention is useful not only as a wrap film for household and commercial use, but also as a film for various stretch packaging applications. Next, the present invention will be explained with reference to examples. Examples 1 to 13 and Comparative Examples 1 to 2 The blended compositions shown in Table 1 were processed using a T-die type film molding machine (extruder 50 mmφ, L/D) 26, die
500mm width, die lip 0.8mm)
After extrusion at 270°C, the film was taken off at 100 m/min through a chill roll through which water at 30°C was passed, to obtain a film with a thickness of 10 to 14 μm. Note that the additives were blended using an 8% by weight masterbatch. Table 1 shows the physical properties of the obtained film and the results of evaluating its performance as a wrapped film.
【表】【table】
【表】【table】
Claims (1)
独重合体100重量部に、ポリオキシエチレンアル
キルフエニルエーテル0.5〜５重量部を配合して
なる樹脂組成物を製膜してなる包装用フイルム。1 A packaging film made of a resin composition prepared by blending 0.5 to 5 parts by weight of polyoxyethylene alkyl phenyl ether to 100 parts by weight of a high-pressure ethylene homopolymer having a density of 0.928 to 0.940 g/ cm3 . .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20202382A JPS5993743A (en) | 1982-11-19 | 1982-11-19 | Packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20202382A JPS5993743A (en) | 1982-11-19 | 1982-11-19 | Packaging film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5993743A JPS5993743A (en) | 1984-05-30 |
| JPH0234979B2 true JPH0234979B2 (en) | 1990-08-07 |
Family
ID=16450639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20202382A Granted JPS5993743A (en) | 1982-11-19 | 1982-11-19 | Packaging film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5993743A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59105041A (en) * | 1982-12-09 | 1984-06-18 | Mitsubishi Petrochem Co Ltd | Stretched film |
| WO2009012092A1 (en) * | 2007-07-13 | 2009-01-22 | Dow Global Technologies Inc. | Low dielectric loss power cable sheaths comprising high pressure polyolefins free of silane functionality |
| CN111465563B (en) * | 2018-02-07 | 2022-07-08 | 冈本株式会社 | Preservative film for food packaging |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4847546A (en) * | 1971-10-18 | 1973-07-06 | ||
| JPS5243880A (en) * | 1975-10-03 | 1977-04-06 | Asahi Dow Ltd | Lapping films and its method of manufacturing |
| JPS58152035A (en) * | 1982-03-05 | 1983-09-09 | Idemitsu Petrochem Co Ltd | Packaging film |
-
1982
- 1982-11-19 JP JP20202382A patent/JPS5993743A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4847546A (en) * | 1971-10-18 | 1973-07-06 | ||
| JPS5243880A (en) * | 1975-10-03 | 1977-04-06 | Asahi Dow Ltd | Lapping films and its method of manufacturing |
| JPS58152035A (en) * | 1982-03-05 | 1983-09-09 | Idemitsu Petrochem Co Ltd | Packaging film |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5993743A (en) | 1984-05-30 |
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