JPS63216722A - Polyolefin film - Google Patents
Polyolefin filmInfo
- Publication number
- JPS63216722A JPS63216722A JP62050783A JP5078387A JPS63216722A JP S63216722 A JPS63216722 A JP S63216722A JP 62050783 A JP62050783 A JP 62050783A JP 5078387 A JP5078387 A JP 5078387A JP S63216722 A JPS63216722 A JP S63216722A
- Authority
- JP
- Japan
- Prior art keywords
- ethylene
- vinyl acetate
- film
- melt index
- weight
- 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.)
- Pending
Links
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 12
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000155 melt Substances 0.000 claims abstract description 9
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 9
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims abstract description 8
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 8
- 239000004711 α-olefin Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 230000003746 surface roughness Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、所謂梨地状であって、適度な不透明性、木目
細かい肌荒れを有すると共に、柔軟性があって風合の優
れたポリオレフィンフィルムに関し、各種包装用資材等
に用いられるポリオレフィンフィルムに関スル。Detailed Description of the Invention (a) Industrial Application Field The present invention provides a polyolefin film that has a so-called satin finish, moderate opacity, fine roughness, and is flexible and has an excellent texture. Regarding polyolefin films used for various packaging materials, etc.
←）従来の技術
従来より、梨地状のポリオレフィンフィルムとして、低
密度ポリエチレン等のフィルムを梨地彫刻ロールに押圧
することにより梨地をフィルムに転写するという機械的
方法により得られたものが多く用いられている。また、
高密度ポリエチレンのようにそのフィルム自体の表面が
荒れ不透明性を有するというものも知られている。←) Conventional technology Conventionally, satin-like polyolefin films have often been obtained by a mechanical method in which the satin finish is transferred to the film by pressing a film such as low-density polyethylene against a satin engraving roll. There is. Also,
It is also known that the surface of the film itself is rough and opaque, such as high-density polyethylene.
ｆ→発明が解決しようとする問題点
従来の梨地状のポリオレフィンフィルムは、前者におい
ては、低密度ポリエチレン自体の性質および機械的押圧
に起因して、また、後者においては、高密度ポリエチレ
ン自体の性質に起因して、いずれ共に柔軟性が不足し風
合の劣ったものであ妙、用途によってはそれが問題とな
っている。f→Problem to be Solved by the Invention Conventional satin-like polyolefin films are caused by the properties of low-density polyethylene itself and mechanical pressure in the former, and due to the properties of high-density polyethylene itself in the latter. Due to this, they tend to lack flexibility and have poor texture, which can be a problem depending on the application.
本発明は、この問題に着目してなされたものであり、適
度な不透明性、木目細かい肌荒れを有すると共に、柔軟
性があって風合の優れたボリオレフインフイルムを提供
することを目的とする。The present invention has been made in view of this problem, and an object of the present invention is to provide a polyolefin film that has appropriate opacity, fine roughness, flexibility, and excellent texture.
に）間頂点を解決するための手段
本発明のポリオレフィンフィルムは、酢酸ビニル含量が
１５〜３５重量％、メルトインデックスが１０〜３０ｆ
／１０分のエチレン−酢酸ビニル共重合体５０〜８０重
量％と、密度が０．９５０以下、メルトインデックスが
０．３〜１．０ｆ／１０分のエチレン−α−オレフイン
共重合体５０〜２０重量％からなる組成物を押出成形し
てなる。The polyolefin film of the present invention has a vinyl acetate content of 15 to 35% by weight and a melt index of 10 to 30f.
/10 min ethylene-vinyl acetate copolymer 50-80% by weight and 50-20% ethylene-α-olefin copolymer having a density of 0.950 or less and a melt index of 0.3-1.0 f/10 min. % by weight is extruded.
本発明におけるエチレン−酢酸ビニル共重合体は、酢酸
ビニル含量（ＪＩＳ Ｋ６７３０に準拠）が１５〜３
５重１ｔ％、好ましくは２０〜３５重量％、メルトイン
デックス（ＪＩＳ Ｋ６７６０に準拠）が１０〜３０
ｆ／１０分、好ましくは１５〜３０ｆ／１０分のもので
ある。The ethylene-vinyl acetate copolymer in the present invention has a vinyl acetate content (according to JIS K6730) of 15 to 3.
5 weight 1t%, preferably 20-35% by weight, melt index (according to JIS K6760) 10-30
f/10 minutes, preferably 15 to 30 f/10 minutes.
酢酸ビニル含量が１５重量％未満では、フィルムが不透
明性に欠け、さらに、木目細かい肌荒れを有しないもの
となると共に柔軟性が不足し、また、メルトインデック
スが１ ａｔｌｘ ｏ分未満でも、フィルムが不透明性
に欠け、木目細かい肌荒れを有しないものとなる。一方
、酢酸ビニル含量が３５重量％を越えた場合、および、
メルトインデックスがａｏｒ／ｌｏ分を越えた場合には
、いずれ共にフィルムの押出成形時の成膜安定性が劣り
膜厚均一性に欠けたフィルムしか得られないこととなる
。If the vinyl acetate content is less than 15% by weight, the film will lack opacity, will not have fine grain roughness and will lack flexibility, and even if the melt index is less than 1 atlx o min, the film will be opaque. It lacks texture and does not have fine grain or rough skin. On the other hand, when the vinyl acetate content exceeds 35% by weight, and
If the melt index exceeds aor/lo, the film formation stability during extrusion molding of the film will be poor and only a film lacking in film thickness uniformity will be obtained.
また、本発明におけるエチレン−α−オレフイン共重合
体とは、エチレンと、プロピレン、フテンー１．４−メ
チルペンテン−１、ヘキセン−１１オクテン−１等のα
−オレフインとの共重合体でろって、その密度が０．９
ｓｏｙ／ｃｄ以下、好ましくは０．９１０〜０．９３０
ｆ／ｄｉ、メルトインデックス（ＪＩＳ Ｋ６７６
０に準拠）が０．３〜１．Ｏｒ７１０分、好ましくは０
．３〜０．８ ｆ ／ Ｉ ０分のものでおる。密度が
０．９５０ｔ／ｃｄを越えるとフィルムの柔軟性がなく
風合の劣るものとなる。また、メルトインデックスがｏ
、３ｒ／ｌｏ分未満ではフィルムの不透明性、肌荒れが
大きくなし過ぎて梨地状フィルムとして不適とな抄、一
方、１−Ｏｆ ／ １０分を越えると、フィルムの押出
成形時の成膜安定性が劣９、得られるフィルムは膜厚均
一性に欠は木目細かい肌荒れを有しないものとなる。In addition, the ethylene-α-olefin copolymer in the present invention refers to ethylene and α such as propylene, phthene-1,4-methylpentene-1, hexene-11-octene-1, etc.
- It is a copolymer with olefin, and its density is 0.9
soy/cd or less, preferably 0.910 to 0.930
f/di, melt index (JIS K676
0) is 0.3 to 1. Or710 minutes, preferably 0
．． 3 to 0.8 f/I 0 minutes. If the density exceeds 0.950 t/cd, the film will not have flexibility and will have poor feel. Also, the melt index is o
If it is less than 3r/lo minutes, the film becomes too opaque and rough, making it unsuitable for use as a satin-like film.On the other hand, if it exceeds 1-Of/10 minutes, the film formation stability during extrusion molding becomes poor. Poor 9: The resulting film lacks film thickness uniformity and does not have fine grain or rough skin.
本発明において、エチレン−酢酸ビニル共重合体とエチ
レン−α−オレフイン共重合体の組成比は、前者を５０
〜８０重量％で後者を５０〜２０重量％、好ましくは前
者を６０〜７５重量％、後者を４０〜２５重量％とする
。前者が５０重量％未満では、木目細かい肌荒れを有す
るフィルムを得ることが困難とな９、一方、前者が８０
重量％を越えると、フィルムの押出成形時の成膜安定性
に欠けると共に、フィルムの不透明性、肌荒れが不充分
となる。In the present invention, the composition ratio of the ethylene-vinyl acetate copolymer and the ethylene-α-olefin copolymer is 50%
~80% by weight, the latter 50-20% by weight, preferably 60-75% by weight of the former, and 40-25% by weight of the latter. If the former is less than 50% by weight, it will be difficult to obtain a film with fine rough texture9, while if the former is less than 50% by weight,
If it exceeds % by weight, film formation stability during extrusion molding of the film will be lacking, and the film will have insufficient opacity and surface roughness.
本発明のフィルムは、インフレーション成形法、Ｔダイ
成形法等の公知のフィルム成形法によって製造し得る。The film of the present invention can be manufactured by a known film forming method such as an inflation molding method or a T-die molding method.
また、本発明のフィルムの厚みは、通常、１５〜１５０
μ程度である。Further, the thickness of the film of the present invention is usually 15 to 150
It is about μ.
（ホ）作用および効果
本発明のポリオレフィンフィルムは、特定の酢酸ビニル
含量およびメルトインデックスを有するエチレン−酢酸
ビニル共重合体と、特定の密度およびメルトインデック
スを有するエチレン−α−オレフイン共重合体との、特
定比率の組成物を押出成形してなるので、適度な不透明
性、木目細かい肌荒れを有すると共に、柔軟性があって
風合の優れたものとなる。(e) Function and Effect The polyolefin film of the present invention is composed of an ethylene-vinyl acetate copolymer having a specific vinyl acetate content and melt index, and an ethylene-α-olefin copolymer having a specific density and melt index. Since it is made by extrusion molding a composition of a specific ratio, it has appropriate opacity, fine grained roughness, and is flexible and has an excellent texture.
例えば、本発明のフィルムは、霞度（ＪＩＳＫ６７１４
に準拠）が６５％以上、光沢度（ＪＩＳ Ｚ８７４１
に準拠）が２％以下で、ヤング率（ＩＳＯＲ１１８４に
準拠）が５００ｋｌ／ｃｄ以下であり、柔軟の梨地状フ
ィルムとして、紙おむつ、生理用品等の衛生用品用量オ
、医療用テープ原反、使い捨て手袋、ショッピングバッ
ク、各種包装フィルム等に好適なものである。For example, the film of the present invention has a haze value (JISK6714
(according to JIS Z8741) is 65% or more, glossiness (JIS Z8741
The Young's modulus (according to ISOR1184) is 2% or less, and the Young's modulus (according to ISOR1184) is 500 kl/cd or less, and can be used as a flexible satin-like film for disposable diapers, sanitary products such as sanitary products, medical tape raw material, and disposable gloves. , shopping bags, various packaging films, etc.
（へ）実施例
実施例１〜５、比較例１〜４
表に示した、酢酸ビニル含量、メルトインデックスを有
するエチレン−酢酸ビニル共重合体と、α−オレフイン
種、密度、メルトインデックスを有するエチレン−α−
オレフイン共重合体との、表に示した比率の組成物を、
樹脂温度１４０℃で押出してインフレーション成形する
ことによ原厚み２０μおよび１００μのポリオレフィン
フィルムを製造した。(F) Examples Examples 1 to 5, Comparative Examples 1 to 4 Ethylene-vinyl acetate copolymers having the vinyl acetate content and melt index shown in the table, and ethylene having the α-olefin species, density, and melt index −α−
The composition with the olefin copolymer in the ratio shown in the table,
Polyolefin films with original thicknesses of 20 μm and 100 μm were manufactured by extrusion and inflation molding at a resin temperature of 140° C.
得られたフィルムについて、霞度、光沢度、および目視
による外観、並びに、ヤング率、および触感による風合
を評価し、結果を表に示した。The resulting film was evaluated for haze, gloss, visual appearance, Young's modulus, and texture, and the results are shown in the table.
比較例５．６
表に示したエチレン−酢酸ビニル共重合体（比較例５）
、高密度ポリエチレン（比較例６）をそれぞれ単独で用
いてフィルムを製造し評価した。Comparative Example 5.6 Ethylene-vinyl acetate copolymer shown in the table (Comparative Example 5)
and high-density polyethylene (Comparative Example 6) were produced and evaluated.
（以下余白）(Margin below)
Claims (1)
スが１０〜３０ｇ／１０分のエチレン−酢酸ビニル共重
合体５０〜８０重量％と、密度が０．９５０以下、メル
トインデツクスが０．３〜１．０ｇ／１０分のエチレン
−α−オレフイン共重合体５０〜２０重量％からなる組
成物を押出成形してなるポリオレフインフイルム。Ethylene-vinyl acetate copolymer with a vinyl acetate content of 15-35% by weight and a melt index of 10-30 g/10 min of 50-80%, a density of 0.950 or less, and a melt index of 0.3-80%. A polyolefin film formed by extrusion molding a composition comprising 50 to 20% by weight of an ethylene-α-olefin copolymer at a rate of 1.0 g/10 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62050783A JPS63216722A (en) | 1987-03-05 | 1987-03-05 | Polyolefin film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62050783A JPS63216722A (en) | 1987-03-05 | 1987-03-05 | Polyolefin film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63216722A true JPS63216722A (en) | 1988-09-09 |
Family
ID=12868422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62050783A Pending JPS63216722A (en) | 1987-03-05 | 1987-03-05 | Polyolefin film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63216722A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5578028A (en) * | 1993-09-17 | 1996-11-26 | Pall Corporation | Method and system for collecting, processing, and storing blood components |
| JP2002105252A (en) * | 2000-09-29 | 2002-04-10 | Sumitomo Chem Co Ltd | Polyethylene resin composition and low gloss polyethylene film |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59215343A (en) * | 1983-05-23 | 1984-12-05 | Toyo Soda Mfg Co Ltd | Polyolefin composition for use in producing film or sheet |
| JPS61106645A (en) * | 1984-10-30 | 1986-05-24 | Du Pont Mitsui Polychem Co Ltd | Plastic film silkish to touch |
-
1987
- 1987-03-05 JP JP62050783A patent/JPS63216722A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59215343A (en) * | 1983-05-23 | 1984-12-05 | Toyo Soda Mfg Co Ltd | Polyolefin composition for use in producing film or sheet |
| JPS61106645A (en) * | 1984-10-30 | 1986-05-24 | Du Pont Mitsui Polychem Co Ltd | Plastic film silkish to touch |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5578028A (en) * | 1993-09-17 | 1996-11-26 | Pall Corporation | Method and system for collecting, processing, and storing blood components |
| US5578027A (en) * | 1993-09-17 | 1996-11-26 | Pall Corporation | Method and system for collecting, processing, and storing blood components |
| US6045546A (en) * | 1993-09-17 | 2000-04-04 | Pall Corporation | Method and system for collecting, processing, and storing blood components |
| JP2002105252A (en) * | 2000-09-29 | 2002-04-10 | Sumitomo Chem Co Ltd | Polyethylene resin composition and low gloss polyethylene film |
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