JPS58120654A - Ethylene-alpha-olefin copolymer composition - Google Patents
Ethylene-alpha-olefin copolymer compositionInfo
- Publication number
- JPS58120654A JPS58120654A JP265982A JP265982A JPS58120654A JP S58120654 A JPS58120654 A JP S58120654A JP 265982 A JP265982 A JP 265982A JP 265982 A JP265982 A JP 265982A JP S58120654 A JPS58120654 A JP S58120654A
- Authority
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- Japan
- Prior art keywords
- ethylene
- vinyl acetate
- olefin
- copolymer
- alpha
- 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.)
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はホット・タック性に優れたエチレン・α−オレ
フィン共重合体組成物に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ethylene/α-olefin copolymer composition having excellent hot tack properties.
エチレン・酢酸ビニル共重合体、高圧法低密度ポリエチ
レン等の低融点のポリエチレン系樹脂は低温シール性、
透明性等に浸れるのでフィルムのシール材として大量に
使用されている。しかしながらかかる樹脂はホット・タ
ック性（ヒートシール直後にシール部に剥離力をかけた
奢合の抵抗力あるいは温度中）に劣るので、自動充填包
装に用いる場合には、包装速度、適正温度の管理等に充
分注意を払う必要があった。一方、ホット・タック性に
優れる樹脂の１つとしてアイオノマーが知られているが
かかるフィルムはホット・タック性は優れるものの引裂
強度、あるいは吸湿性を有するために成形時に発泡する
懸念がある等の欠点があった。本発明者らはかかる現状
に鑑みアイオノマーに代わるホット・タック性に優れる
樹脂の開発について検討した結果、特定のエチレン・α
−オレフィン共重合体に酢酸ビニル含有量が多いエチレ
ン・酢酸ビニル共重合体を添加してなる組成物がホット
・タック性に優れしかも引裂強度、透明性、耐衝撃強度
、機械的強度及び成形性に優れる事が分かり本発明に到
達した。Low-melting point polyethylene resins such as ethylene/vinyl acetate copolymer and high-pressure low-density polyethylene have low-temperature sealing properties,
Because of its transparency, it is used in large quantities as a sealing material for films. However, such resins have poor hot tack properties (resistance when peeling force is applied to the sealed portion immediately after heat sealing or during temperature), so when used for automatic filling packaging, packaging speed and appropriate temperature must be controlled. It was necessary to pay sufficient attention to this. On the other hand, ionomers are known as one of the resins with excellent hot tack properties, but although such films have excellent hot tack properties, they have drawbacks such as poor tear strength and hygroscopicity, which may cause foaming during molding. was there. In view of the current situation, the present inventors investigated the development of a resin with excellent hot tack properties to replace ionomers, and found that a specific ethylene-α
-A composition made by adding an ethylene/vinyl acetate copolymer with a high vinyl acetate content to an olefin copolymer has excellent hot tack properties, as well as tear strength, transparency, impact strength, mechanical strength, and moldability. It was found that the present invention is excellent.
すなわち本発明はメルトフローレート０．１ないし２０
ｇ／１０ｍｔｎ、密度０．９１０ないし０．９４０ｇ／
ａＩ３及び融点１１５ないし１３０°Ｃのエチレンと炭
素数４ないし２０のα−オレフィンとの共重合体（Ａ）
：９５ないし６０重量部と′メルトフローレート０．１
ないし５０ ｇ／ １０ ｍ ｉ ｎ ％密度０．９２
０ないし０．９８０ｇ／３３、融点１００ないし４０°
Ｃ及び酢酸ビニル含有量１０ないし５０重量％のエチレ
ン・酢酸ビニル共重合体（Ｂ）：５ないし４０重量部（
但しくＡ）十申）＝ Ｉ ００重量部となる。）とから
なるエチレン・α−オレフィン共重合体組成物を提供す
るものである。That is, the present invention has a melt flow rate of 0.1 to 20.
g/10mtn, density 0.910 to 0.940g/
Copolymer (A) of ethylene and α-olefin having 4 to 20 carbon atoms and having aI3 and a melting point of 115 to 130°C
:95 to 60 parts by weight and melt flow rate 0.1
to 50 g/10 min% density 0.92
0 to 0.980g/33, melting point 100 to 40°
Ethylene/vinyl acetate copolymer (B) with C and vinyl acetate content of 10 to 50% by weight: 5 to 40 parts by weight (
However, A) 100% = I 00 parts by weight. ) to provide an ethylene/α-olefin copolymer composition comprising:
本発明の組成物に用いるエチレン−α−オレフィン共重
合体とは、メルトフローレート（ＡＳＴＭＤ１２３Ｂ：
Ｅ）が０．１ないし２０ ｇ／ １０ ｍ ｉ ｎ ｓ
好ましくは０．５ないし５ ｇ７１０ ｍｉｎ ％密度
が０．９１０ないし０．９４０ｇ／（７）３、好ましく
は０．９１５ないし０．９３５ ｇ／画３及び融点が１
１５ないし１３０°Ｃ１好ましくは１１８ないし１２５
℃の範囲のエチレンと炭素数４ないし２０のα−オレフ
ィン、好ましくけ６ないし１８のα−オレフィンとの共
重合体である。The ethylene-α-olefin copolymer used in the composition of the present invention has a melt flow rate (ASTMD123B:
E) is 0.1 to 20 g/10 min s
Preferably 0.5 to 5 g710 min % density 0.910 to 0.940 g/(7)3, preferably 0.915 to 0.935 g/(7)3 and melting point 1
15 to 130°C1 preferably 118 to 125
It is a copolymer of ethylene and an α-olefin having 4 to 20 carbon atoms, preferably 6 to 18 carbon atoms.
メルトフローレートが０−１ ｇ／ｌ ０ｍｔｎ未満の
ものは溶融粘度が高く成形性に劣り、２０ ｇ／ １０
ｍ１ｎを越えるものは溶融粘度が低く成形性に劣り、且
つ機械的強度も低い。密度が０．９１０ｇ／ｃｒＩｔ３
未満のものはフィルムにした場合表面がべたつき、また
耐油性、耐熱性に劣り、０．９４０ｇ／ｃ７Ｎ５を越え
るものは後述のエチレン・酢酸ビニル共重合体（Ｂ）を
添加してもホット・タック性が改善されない。融点が１
１５°Ｃ未満のものは耐熱性に劣り、１３０°Ｃを越え
るものはエチレン・酢酸ビニル共重合体（Ｂ）を添加し
てもホット・タック性が改善されない。尚本発明におけ
る融点とは示差走査型熱量計（ＤＳＯ）による昇温速度
１０°Ｃ／ｍｉｎでの吸熱曲線から求めた吸熱ピークを
示す点の最高温度のことである。本発明に用いるエチレ
ン・α−オレフィン共重合体（Ａ）は吸熱ピークが１個
ないし複数個、多くの場合２個ないし３個存在する。エ
チレンと共重合される炭素数４ないし２０のα−オレフ
ィンとは具体的には、１−ブテン、１−ペンテン、１−
ヘキセン、４−メチル−１−ペンテン、１−オクテン、
１−デセン、１−テトラデセン、１−オクタデセンある
いはこれらの混合物である。プロピレンと共重合したも
のは機械的強度、ヒートシール強度に劣るので好ましく
ない。とくに炭素数６以上のα−オレフィンとの共重合
体は耐衝撃性に優れるので好ましい。If the melt flow rate is less than 0-1 g/l 0mtn, the melt viscosity is high and the moldability is poor, and the melt flow rate is less than 20 g/10 mtn.
Those exceeding m1n have low melt viscosity, poor moldability, and low mechanical strength. Density is 0.910g/crIt3
If the value is less than 0.940g/c7N5, the surface will be sticky when made into a film, and the oil resistance and heat resistance will be poor. sex is not improved. melting point is 1
If the temperature is less than 15°C, the heat resistance is poor, and if the temperature exceeds 130°C, the hot tack property will not be improved even if the ethylene/vinyl acetate copolymer (B) is added. The melting point in the present invention refers to the highest temperature at a point showing an endothermic peak determined from an endothermic curve measured by a differential scanning calorimeter (DSO) at a heating rate of 10°C/min. The ethylene/α-olefin copolymer (A) used in the present invention has one or more endothermic peaks, often two or three. Specifically, the α-olefin having 4 to 20 carbon atoms to be copolymerized with ethylene includes 1-butene, 1-pentene, 1-
hexene, 4-methyl-1-pentene, 1-octene,
1-decene, 1-tetradecene, 1-octadecene or a mixture thereof. Those copolymerized with propylene are not preferred because they have poor mechanical strength and heat seal strength. In particular, copolymers with α-olefins having 6 or more carbon atoms are preferred because they have excellent impact resistance.
また本発明に用いる上記範囲のエチレン・α−オレフィ
ン共重合体（Ａ）として更に分子量分布（重量平均分子
量／数平均分子量の値）が６以下のものを用いるとより
透明性に優れるフィルムが得られるので好ましい。尚分
子量分布の値はゲルパーミェーションクロマトグラフ（
ａｐｃ）法により分子量分布曲線を求め、重量平均分子
量及び数平均分子量とを算出することにより求めた値で
ある。Further, if the ethylene/α-olefin copolymer (A) in the above range used in the present invention is one with a molecular weight distribution (weight average molecular weight/number average molecular weight) of 6 or less, a film with even better transparency can be obtained. This is preferable because it allows The molecular weight distribution values were determined using gel permeation chromatography (
This is a value obtained by obtaining a molecular weight distribution curve by the apc) method and calculating the weight average molecular weight and number average molecular weight.
本発明に用いるエチレン・α−オレフィン共重合体（Ａ
）に添加するエチレン・酢酸ビニル共重合体（Ｂ）とは
、メルト７０−レート（ＡＳＴＭＤ １２５Ｂ ：Ｅ）
が０．１ないし５０ ｇ／ １０ ｍｉｎ ｓ好ましく
は０．５ないし３０ｇ７１０ｍｉｎ、密度が０．９２０
ないし０．９８０ｇ／α３、好ましくは０．９３０ない
し０．９６０ ｇ／ａｘ’、融点が１００ないし４０°
Ｃ１好ましくは９５ないし５５℃及び酢酸ビニル含有量
が１０ないし５０重量％、好ましくは１０ないし３５重
量％の範囲のものでアル。メルトフローレートがＯ−１
ｇ／ １０ ｍｉｎ 未満のものは成形性が悪＜ 、５
０ｇ／１０ｍ１ｎを越えるものは機械的強度が低く、ま
たホット・り゛ンク性が改良されない。密度が０．９２
０ ｇ／ｆｆ１３未満のものはホット・タック性改良効
果が乏しく 、０．９８０ｇ／（７）３を越えるものは
、成形性に問題がある。融点が４０’Ｃ未満のものは、
耐熱性、耐油性に劣り、１００°Ｃを越えるものはホッ
ト・タック性が改良されない。酢酸ビニル含有量が１０
重量％未満はホット・タック性の改良効果が少なく、５
０重量％を越えるものは機械的強度が低い。Ethylene/α-olefin copolymer (A
) The ethylene/vinyl acetate copolymer (B) to be added to the melt 70-rate (ASTMD 125B:E)
is 0.1 to 50 g/10 min s, preferably 0.5 to 30 g710 min, and the density is 0.920
to 0.980 g/α3, preferably 0.930 to 0.960 g/ax', melting point 100 to 40°
C1 preferably at 95 to 55°C and with a vinyl acetate content in the range of 10 to 50% by weight, preferably 10 to 35% by weight. Melt flow rate is O-1
g/ less than 10 min, the moldability is poor < , 5
If it exceeds 0 g/10 m1n, mechanical strength will be low and hot linkability will not be improved. Density is 0.92
If it is less than 0 g/ff13, the effect of improving hot tack properties is poor, and if it is more than 0.980 g/(7)3, there is a problem in moldability. Those with a melting point of less than 40'C are
It has poor heat resistance and oil resistance, and hot tack properties cannot be improved if the temperature exceeds 100°C. Vinyl acetate content is 10
If it is less than 5% by weight, the effect of improving hot tack properties is small;
If it exceeds 0% by weight, the mechanical strength is low.
本発明の組成物は前記エチレン・α−オレフィン共重合
体（Ａ）とエチレン・酢酸ビニル共重合体（Ｂ）とを９
５１５ないし６０／４０（重量部）、好ましくは９０／
１０ないし７０／３０ （重量部）の範囲で混合したも
のである。エチレン・酢酸ビニル共重合体（Ｂ）の量が
５重量部未満ではホット・タック性が改良されず４０重
量部を越えると機械的強度の低下が著しくなる。The composition of the present invention contains the ethylene/α-olefin copolymer (A) and the ethylene/vinyl acetate copolymer (B) at 9%
515 to 60/40 (parts by weight), preferably 90/
It is a mixture in a range of 10 to 70/30 (parts by weight). If the amount of the ethylene/vinyl acetate copolymer (B) is less than 5 parts by weight, the hot tack properties will not be improved, and if it exceeds 40 parts by weight, the mechanical strength will be significantly reduced.
本発明のエチレン・ａ−オレフィン共重合体組成物を得
るには、エチレン・α−オレフィン共重合体（Ａ）とエ
チレン・酢酸ビニル共重合体（ト））とを前記範囲で公
知の種々の方法、例えばＶ−ブレンダー、リボンブレン
ブールヘンシェルミキサー、タンブラーブレンダー等で
混合する方法、混合後押出機等で造粒する方法、あるい
は押出機に−ダー、バンバリーミキサ−等で混練造粒す
る方法等を採りうる。In order to obtain the ethylene/a-olefin copolymer composition of the present invention, the ethylene/α-olefin copolymer (A) and the ethylene/vinyl acetate copolymer (g)) are mixed in various known manners within the above-mentioned ranges. Examples of methods include mixing with a V-blender, ribbon Bremburg Henschel mixer, tumbler blender, etc., granulating with an extruder after mixing, or kneading and granulating with an extruder, Banbury mixer, etc. can be taken.
本発明のエチレン・ａ−オレフィン共重合体組成物はフ
ィルムとしてそれ自体、ホット・タック性に優れしかも
引裂強度、透明性、低温ヒートシール性、耐衝撃強度、
適度なフィルムの腰等を有しているので単独でも包装用
フィルム、農業用フィルム、保護フィルムとして使用で
きるが、ホット・タック性を生かして各種の基材と貼り
合わせることにより各種重速に適した包装用フィルムが
得られる。The ethylene/a-olefin copolymer composition of the present invention itself as a film has excellent hot tack properties, tear strength, transparency, low temperature heat sealability, impact strength,
Since it has an appropriate film stiffness, it can be used alone as a packaging film, agricultural film, or protective film, but it is suitable for various heavy speeds by taking advantage of its hot tack properties and laminating it with various base materials. A packaging film is obtained.
これら基材としては、フィルム形成能を有する任意の重
合体あるいは紙、アルミニウム箔、セロで１ン等を使用
することができる。また重合体としては、例えば、高密
度ポリエチレン、中、低密度ポリエチレン、エチレン・
酢酸ビニル共重合体、エチレン・アクリル酸エステル共
重合体、アイオノマー、ポリプロピレン、ポリ−１−ブ
テン、ボＩＪ−４−メチルー１−ペンテン等のオレフィ
ン系重合体、ポリ塩化ビニル、ポリ塩化ビニリデン、ポ
リスチレン、ポリアクリレート）ポリアクリロニトリル
等のビニル系重合体、ナイロン６Ｓナイロン６６、ナイ
ロン７、ナイロン１０、ナイロン１１、ナイロン１２、
ナイロン６１０、ポリメタキシリレンアジパミド等のポ
リアミド、ポリエチレンテレフタレート１ポリエチレン
テレフタレート／イソフタレート、ポリブチレンテレフ
タレート等のポリエステル、ポリビニルアルコール、エ
チレン・ビニルアルコール共重合体、ポリカーボネート
等を挙げることができる。これらの基材は目的、被包装
物により適宜選択することができる。例えば・被包装物
が腐食しやすい食品の場合には・ポリアミド、ポリ塩化
ビニリデン１エチレン・ビニルアル：ｌ Ａ／ 共重
合体、ポリビニルアルコール１ポリエステルの如く、透
明性、剛性、ガス透過抵抗性の優れた樹脂が選択される
。菓子や繊維包装等に対しては、透明性、剛性、水分透
過抵抗性の良好なポリプロピレン等を外層として選択す
ることができる。又基材が重合体であれば一軸または二
軸に延伸されていてもよい。As these base materials, any polymer having film-forming ability, paper, aluminum foil, cellulose, etc. can be used. Examples of polymers include high-density polyethylene, medium- and low-density polyethylene, and ethylene.
Vinyl acetate copolymer, ethylene/acrylic acid ester copolymer, ionomer, polypropylene, poly-1-butene, olefin polymers such as BoIJ-4-methyl-1-pentene, polyvinyl chloride, polyvinylidene chloride, polystyrene , polyacrylate) vinyl polymers such as polyacrylonitrile, nylon 6S, nylon 66, nylon 7, nylon 10, nylon 11, nylon 12,
Examples include polyamides such as nylon 610 and polymethaxylylene adipamide, polyesters such as polyethylene terephthalate, polyethylene terephthalate/isophthalate, and polybutylene terephthalate, polyvinyl alcohol, ethylene/vinyl alcohol copolymers, and polycarbonates. These base materials can be appropriately selected depending on the purpose and the item to be packaged. For example, if the packaged item is a food that is easily corroded, use materials such as polyamide, polyvinylidene chloride 1 ethylene/vinyl alcohol:l A/copolymer, polyvinyl alcohol 1 polyester, which have excellent transparency, rigidity, and gas permeation resistance. resin is selected. For confectionery, textile packaging, etc., polypropylene or the like having good transparency, rigidity, and moisture permeation resistance can be selected as the outer layer. Further, if the base material is a polymer, it may be uniaxially or biaxially stretched.
本発明のエチレン・ａ−オレフィン共重合体組成物から
なるフィルムと前記基材とを貼り合わせた複合フィルム
の製造方法としては、ドライラミネート法、押出ラミネ
ート法、サンドインチラミネート法、共押出法等公知の
種々の方法が採用できる。Methods for producing a composite film in which a film made of the ethylene/a-olefin copolymer composition of the present invention and the base material are laminated include a dry lamination method, an extrusion lamination method, a sandwich lamination method, a coextrusion method, etc. Various known methods can be employed.
また本発明のエチレン・α−オレフィン共重合体組成物
には、耐候安定剤、耐熱安定剤、帯電防止剤、防曇剤、
アンチブロッキング剤、スリップ剤、滑剤、顔料、染料
、流滴剤等の通常ポリオレフィンに添加して使用される
各種配合剤を本発明の目的を損わない範囲で配合してお
いてもよい。In addition, the ethylene/α-olefin copolymer composition of the present invention includes a weathering stabilizer, a heat stabilizer, an antistatic agent, an antifogging agent,
Various additives such as anti-blocking agents, slip agents, lubricants, pigments, dyes, droplet agents, etc. which are usually added to polyolefins may be added to the extent that the purpose of the present invention is not impaired.
本発明のエチレン・α−オレフィン共重合体組成物は包
装用フィルムとして、種々の被包装用物の包装に用いる
ことができるが、ホット・タック性、低温ヒートシール
性、耐引裂性、透明性に優れるので・例えば冷凍食品包
装分野、漬物、豆腐、こんにゃく等の水もの包装袋、カ
レー、焼肉用タレ、スープ１バター、チーズ等の油性食
品包装袋、みそ、ジャム等のペースト状物包装袋等に好
適に使用できる。The ethylene/α-olefin copolymer composition of the present invention can be used as a packaging film for packaging various items, but it has excellent hot tack properties, low temperature heat seal properties, tear resistance, and transparency. For example, in the frozen food packaging field, packaging bags for watery foods such as pickles, tofu, konnyaku, etc., packaging bags for oil-based foods such as curry, yakiniku sauce, soup 1 butter, cheese, etc., packaging bags for pasty items such as miso, jam, etc. It can be suitably used for etc.
次に実施例を挙げて本発明を更に詳しく説明するが、本
発明はその要旨を越えない限りこれらの例に何ら制約さ
れるものではない。Next, the present invention will be explained in more detail with reference to examples, but the present invention is not limited to these examples in any way unless the gist of the invention is exceeded.
実施例１
メルトフローレート’ ２−５ ｇ／ １０ ｍ ｉｎ
ｓ密度：０＝９１５、融点：１２４℃（１１９°０，
１０１°Ｃにもピーク有り）及び分子量分布：３．６の
エチレン・４−メチル−１−ペンテン共重合体Ｃ以下Ｅ
Ｉｌｉ Ｐ−工と略す）ニア０重量部とメルト７０−
レート： ２．Ｏｇ ／ＩＱｍｉｎ、密度： ０．９５
０ ｇ／ｃＭ３、融点ニア８°Ｃ及び酢酸ビニル含有量
：２５５重量のエチレン！酢酸ビニル共重合体（エバフ
レックス■Ｐ−２５０５三井ポリケミ力ル株製：以下Ｋ
ＶＡ−１と略す）２５０重量部とをタンブラープレンダ
ーで混合後５ｏ闘φの押出機（設定温度＝１８０℃）で
溶５融し、ｉｏｏｍｍφのサーキュラ−ダイ（ダイリッ
プ：１．２闘、設定温度＝１７０℃）よりバブルを押出
し空冷した後指幅２３０ｍｍ、厚さ３０μのインフレー
ション・フィルムを得た。次いで以下の方法により物性
評価を行った。Example 1 Melt flow rate' 2-5 g/10 min
s density: 0=915, melting point: 124°C (119°0,
There is a peak at 101°C) and molecular weight distribution: 3.6 ethylene/4-methyl-1-pentene copolymer C or lower E
(abbreviated as Ili P-work) Nia 0 parts by weight and Melt 70-
Rate: 2. Og/IQmin, density: 0.95
0 g/cM3, melting point near 8°C and vinyl acetate content: 255 weight of ethylene! Vinyl acetate copolymer (Evaflex P-2505 manufactured by Mitsui Polychemil Co., Ltd.: hereinafter K
VA-1) was mixed with 250 parts by weight in a tumbler blender, melted in an extruder with a diameter of 5°C (temperature set at 180°C), and then put into a circular die with a diameter of iomm diameter (die lip: 1.2mm, set). After extruding the bubble at a temperature of 170° C. and cooling it in air, a blown film with a finger width of 230 mm and a thickness of 30 μm was obtained. Next, physical properties were evaluated by the following method.
霞度（％） ： ＡＳＴＭ Ｄ １００３光沢（％）：
ＡＳＴＭＤ２４５７ 入射角：２０度衝撃強度（ｋｔ
ｉ−Ｃｍ１０ｆｔ） ： ＡＳＴＭ Ｄ ３４２０引裂
強度（ｋｇ／ｌ） ： 、Ｔ Ｉ Ｓ Ｚ １７０２曲
げ剛性（ｋＱ１０１１２） ： １４０ Ｘ １４０ｍ
ｍ（７）試験片を用意し、Ｈａｎ４１ｅ−０−Ｍｅｔｅ
ｒ（ＴｈｗｉｎｇＡｌｂｅｒｔ社製；米国）を用い、ス
リット幅を５ｍｍにして試験片に曲げ応力を加え最大応
力を求め試験片の厚みで除した値を曲げ剛性（ｋｇ／Ｃ
ＩＩＪ２）とした。尚曲げ剛性は試料の縦方向及び横方
向の二点について求めた。Haze (%): ASTM D 1003 Gloss (%):
ASTM D2457 Incident angle: 20 degrees Impact strength (kt
i-Cm10ft): ASTM D 3420 Tear Strength (kg/l): , TIS Z 1702 Bending Stiffness (kQ10112): 140 x 140m
m(7) test piece was prepared, and Han41e-0-Mete
r (manufactured by Thwing Albert, USA), apply bending stress to the test piece with a slit width of 5 mm, calculate the maximum stress, and calculate the bending stiffness (kg/C) by dividing the value by the thickness of the test piece.
IIJ2). The bending rigidity was determined at two points in the longitudinal and lateral directions of the sample.
ヒートシール部剥離強度（ｇ／１５ｍｍ）：フイルム面
を重ね合せ、１００°Ｃ，１０５°Ｃ，，１１０°Ｃ１
１２０°Ｃ１１３０°Ｃ，１４０℃、１５０°Ｃの温度
１幅５ｍｍのシールバーにより２ｋｇ／ａｎ２の圧力で
１秒間シールした後放冷した。これらから１５ｍｍ幅の
試験片を切り取り、クロスヘッド速度２００ｍｍ／ｍｉ
ｎでヒートシール部を剥離し翫その際の強度を剥離強度
とした。Peel strength of heat-sealed part (g/15mm): Overlapping film surfaces, 100°C, 105°C, 110°C1
The sample was sealed at 120°C, 1130°C, 140°C, and 150°C for 1 second using a seal bar with a width of 5 mm and a pressure of 2 kg/an2, and then allowed to cool. A 15 mm wide test piece was cut from these and the crosshead speed was 200 mm/mi.
The heat-sealed portion was peeled off at n, and the strength at that time was defined as the peel strength.
ホットタック試験（ｍｍ）：長さ５５０ｍｍＸ幅２０ｍ
ｍの試験片を重ね合せ１０５°Ｃ，１１０°Ｃ１１２０
°Ｃ，１３０℃、１４０°Ｃ，１５０’Ｃの温度、幅５
ｍｍ、長さ３００ｍｍのシールバーにより、２ ｋｇ／
ａｒｔ２の圧力で１秒間シール後、除圧と同時に各試験
片に４３ｇの荷重をかけてシール部を強制剥離し、剥離
した距離（ｍｍ）によりホットタック性の評価を行った
。すなわち、剥離距離の短いもの程ホットタック性に優
れる。Hot tack test (mm): length 550mm x width 20m
Layer m test pieces at 105°C and 110°C at 1120°C.
°C, 130°C, 140°C, 150'C temperature, width 5
mm, with a seal bar of length 300 mm, 2 kg/
After sealing at art 2 pressure for 1 second, the sealed portion was forcibly peeled off by applying a load of 43 g to each test piece at the same time as the pressure was removed, and the hot tack property was evaluated based on the peeling distance (mm). That is, the shorter the peeling distance, the better the hot tack properties.
結果を第１表に示す。The results are shown in Table 1.
実施例２．３
実施例１ （７） ＫＭＰ−Ｉ／ＥＶＡ−Ｉ ＝ ７０
／ ５０の混合比を、７７／２５及び９０／１０（重
量部）とする以外は実施例１と同様に行った。結果を第
１表に示す。Example 2.3 Example 1 (7) KMP-I/EVA-I = 70
The same procedure as in Example 1 was carried out except that the mixing ratio of 1/50 was changed to 77/25 and 90/10 (parts by weight). The results are shown in Table 1.
実施例４
実施例１で用いたＥｖｉ−１の代わりに、メルトフロー
レート： ２．５ ｇ／ｌ ０ ｍｉｎ ％密度：ｏ、
＋；＋４ｇ／ｃＷ１３、融点：８５℃及び酢酸ビニル含
有量：１９重量％のエチレン・酢酸ビニル共重合体（エ
バフレックス■Ｐ−１９０５三井ポリケミカル株製二以
下ＩＶＡ−１と略す）を用いる以外は実施例１と同様に
行った。結果を第１表に示す。Example 4 Instead of Evi-1 used in Example 1, melt flow rate: 2.5 g/l 0 min % density: o,
+; +4 g/cW13, melting point: 85°C, vinyl acetate content: 19% by weight ethylene/vinyl acetate copolymer (Evaflex P-1905 manufactured by Mitsui Polychemical Co., Ltd. 2 hereinafter abbreviated as IVA-1) was used. was carried out in the same manner as in Example 1. The results are shown in Table 1.
比較例１
実施例１で用いたＥＶＡ−工の代わりに、メルト７０−
レー） ： １．７ ｇ／ １０ ｍｉｎ 、密度：０
．９３ｇ／ｃＩＪＩ３、融点：９８°Ｃ及び酢酸ビニル
含有量８重量％のエチレン・酢酸ビニル共重合体（エバ
フレックス■Ｐ−０８０３三井ポリケミカル株製二以下
ＥＶＡ−１と略す）を用い、混合比を８０／２０とする
以外は実施例１と同様に行った。結果を第１表に示す。Comparative Example 1 Instead of the EVA coating used in Example 1, Melt 70-
): 1.7 g/10 min, density: 0
．． Using an ethylene/vinyl acetate copolymer (EVAFLEX P-0803 manufactured by Mitsui Polychemical Co., Ltd., hereinafter abbreviated as EVA-1) with a melting point of 98°C and a vinyl acetate content of 8% by weight, the mixing ratio was 93g/cIJI3. The same procedure as in Example 1 was carried out except that the ratio was changed to 80/20. The results are shown in Table 1.
比較例２
実施例１のＥＭＰ−工／ＥＶＡ−１＝７０／３０の混合
比を５０１５０（重量部）とする以外は実施例１と同様
に行った。結果を第１表に示す。Comparative Example 2 The same procedure as in Example 1 was carried out except that the mixing ratio of EMP-E/EVA-1=70/30 was 50,150 (parts by weight). The results are shown in Table 1.
実施例５
実施例１で用いたＥ Ｍ Ｐ−■の代わりに、メルト７
０−レー） ： ２．５ ｇ／ １０ ｍｉｎ 、密度
：ｆｌ、９２３ｇ／Ｇ３、融点＝１２６°Ｃ（１１９°
Ｃ，１０４℃にもピーク有り）及び分子量分布：３．６
のエチレン−４−メチル−１−ペンテン共重合体（以下
ＥＭＰ−１と略す）を用いる以外は実施例１と同様に行
った。結果を第１表に示す。Example 5 Melt 7 was used instead of EMP-■ used in Example 1.
0-Le): 2.5 g/10 min, density: fl, 923 g/G3, melting point = 126°C (119°
C, there is also a peak at 104°C) and molecular weight distribution: 3.6
The same procedure as in Example 1 was conducted except that the ethylene-4-methyl-1-pentene copolymer (hereinafter abbreviated as EMP-1) was used. The results are shown in Table 1.
比較例６．４
実施例１で用いたＥＭＰ−■及び実施例５で用いたＥＭ
Ｐ−１をそれぞれ単体でフィルムとする以外は実施例１
と同様に行った。結果を第１表に不す０
怠者例
実施例１で用いた組成物の代わりにアイオノマー（ハイ
ミラン■１６５０、三井ポリケミカル株製；以下１Ｍと
略す）を用いる以外は実施例１と同様に行った。結果を
第１表に示す。Comparative Example 6.4 EMP-■ used in Example 1 and EM used in Example 5
Example 1 except that P-1 was made into a film alone.
I did the same thing. The results are not shown in Table 10 Lazy Example Same as Example 1 except that an ionomer (Himilan ■ 1650, manufactured by Mitsui Polychemical Co., Ltd.; hereinafter abbreviated as 1M) was used instead of the composition used in Example 1. went. The results are shown in Table 1.
Claims (1)
１０ ｍｉｎ ｓ密度０．９１０’ないし０．９４０
ｇ／♂及び融点１１５℃ないし１ろ０°Ｃのエチレン
と炭素数４ないし２０のα−オレフィンとの共重合体（
Ａ）：９５ないし６０重量部と、 メルトフローレート０．１ないし５０ｇ／ｌ ０ｍ１ｎ
。 密度０．９２０ないしＯ−９８０ｇ／ａｘ３、融点１０
０℃ないし４０°Ｃ及び酢酸ビニル含有量１０重量％な
いし５０重量％のエチレン・酢酸ビニル共重合体（Ｂ）
：５ないし４０重量部とからなることを特徴とするエチ
レン・α−オレフィン共重合体組成物。(1) Melt flow rate 0.1 to 20 g/
10 min s density 0.910' to 0.940
Copolymer of ethylene and α-olefin having 4 to 20 carbon atoms (g/♂ and melting point of 115°C to 10°C)
A): 95 to 60 parts by weight, melt flow rate 0.1 to 50g/l 0mln
. Density 0.920 to O-980g/ax3, melting point 10
Ethylene-vinyl acetate copolymer (B) with a temperature of 0°C to 40°C and a vinyl acetate content of 10% to 50% by weight
: 5 to 40 parts by weight of an ethylene/α-olefin copolymer composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP265982A JPS58120654A (en) | 1982-01-13 | 1982-01-13 | Ethylene-alpha-olefin copolymer composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP265982A JPS58120654A (en) | 1982-01-13 | 1982-01-13 | Ethylene-alpha-olefin copolymer composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58120654A true JPS58120654A (en) | 1983-07-18 |
| JPS643228B2 JPS643228B2 (en) | 1989-01-20 |
Family
ID=11535464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP265982A Granted JPS58120654A (en) | 1982-01-13 | 1982-01-13 | Ethylene-alpha-olefin copolymer composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58120654A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59109543A (en) * | 1982-12-16 | 1984-06-25 | Sumitomo Chem Co Ltd | Ethylene copolymer resin composition for use in production of improved film |
| JPS6055044A (en) * | 1983-09-07 | 1985-03-29 | Asahi Chem Ind Co Ltd | Polyethylene resin composition for packaging bag |
| JPH03138148A (en) * | 1989-10-25 | 1991-06-12 | Asahi Chem Ind Co Ltd | Multilayered film |
| US5288531A (en) * | 1991-08-09 | 1994-02-22 | The Dow Chemical Company | Pouch for packaging flowable materials |
| US5508051A (en) * | 1993-06-24 | 1996-04-16 | The Dow Chemical Company | Process of preparing a pouch for packaging flowable materials |
| WO1999016796A1 (en) * | 1997-09-30 | 1999-04-08 | Japan Polyolefins Co., Ltd. | Low-density polyethylene resin for laminating, composition thereof, laminate produced therefrom and process for producing the same |
| WO2018062389A1 (en) * | 2016-09-30 | 2018-04-05 | 住友化学株式会社 | Film |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53125452A (en) * | 1977-04-09 | 1978-11-01 | Mitsui Petrochem Ind Ltd | Polyolefin composition |
| JPS5739957A (en) * | 1980-08-21 | 1982-03-05 | Kureha Chemical Ind Co Ltd | Thermal contractive laminated film |
| JPS57202336A (en) * | 1981-06-03 | 1982-12-11 | Showa Denko Kk | Shock absorber |
| JPS58102762A (en) * | 1981-12-15 | 1983-06-18 | 旭化成株式会社 | Low-temperature heat-shrinkable multilayer barrier film and its manufacture |
| JPS58113237A (en) * | 1981-12-28 | 1983-07-06 | Showa Denko Kk | Ethylenic polymer composition |
-
1982
- 1982-01-13 JP JP265982A patent/JPS58120654A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53125452A (en) * | 1977-04-09 | 1978-11-01 | Mitsui Petrochem Ind Ltd | Polyolefin composition |
| JPS5739957A (en) * | 1980-08-21 | 1982-03-05 | Kureha Chemical Ind Co Ltd | Thermal contractive laminated film |
| JPS57202336A (en) * | 1981-06-03 | 1982-12-11 | Showa Denko Kk | Shock absorber |
| JPS58102762A (en) * | 1981-12-15 | 1983-06-18 | 旭化成株式会社 | Low-temperature heat-shrinkable multilayer barrier film and its manufacture |
| JPS58113237A (en) * | 1981-12-28 | 1983-07-06 | Showa Denko Kk | Ethylenic polymer composition |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59109543A (en) * | 1982-12-16 | 1984-06-25 | Sumitomo Chem Co Ltd | Ethylene copolymer resin composition for use in production of improved film |
| JPS6055044A (en) * | 1983-09-07 | 1985-03-29 | Asahi Chem Ind Co Ltd | Polyethylene resin composition for packaging bag |
| JPH03138148A (en) * | 1989-10-25 | 1991-06-12 | Asahi Chem Ind Co Ltd | Multilayered film |
| US5288531A (en) * | 1991-08-09 | 1994-02-22 | The Dow Chemical Company | Pouch for packaging flowable materials |
| US5364486A (en) * | 1991-08-09 | 1994-11-15 | The Dow Chemical Company | Pouch for packaging flowable materials |
| US5508051A (en) * | 1993-06-24 | 1996-04-16 | The Dow Chemical Company | Process of preparing a pouch for packaging flowable materials |
| WO1999016796A1 (en) * | 1997-09-30 | 1999-04-08 | Japan Polyolefins Co., Ltd. | Low-density polyethylene resin for laminating, composition thereof, laminate produced therefrom and process for producing the same |
| US6521734B1 (en) | 1997-09-30 | 2003-02-18 | Japan Polyolefins Co., Ltd. | Low-density polyethylene resin for laminating, composition thereof, laminates produced therefrom and process for producing the same |
| WO2018062389A1 (en) * | 2016-09-30 | 2018-04-05 | 住友化学株式会社 | Film |
| CN109790334A (en) * | 2016-09-30 | 2019-05-21 | 住友化学株式会社 | Film |
| CN109790334B (en) * | 2016-09-30 | 2021-09-24 | 住友化学株式会社 | Film |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS643228B2 (en) | 1989-01-20 |
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