JPH03149233A - Moisture-permeable stretchable film - Google Patents
Moisture-permeable stretchable filmInfo
- Publication number
- JPH03149233A JPH03149233A JP28843589A JP28843589A JPH03149233A JP H03149233 A JPH03149233 A JP H03149233A JP 28843589 A JP28843589 A JP 28843589A JP 28843589 A JP28843589 A JP 28843589A JP H03149233 A JPH03149233 A JP H03149233A
- Authority
- JP
- Japan
- Prior art keywords
- film
- component
- iii
- calcium carbonate
- polyolefin
- 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
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 20
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 12
- 229920000098 polyolefin Polymers 0.000 claims abstract description 9
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims abstract description 8
- 229920001971 elastomer Polymers 0.000 claims abstract description 8
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims abstract description 8
- 239000000806 elastomer Substances 0.000 claims abstract description 6
- 229920006302 stretch film Polymers 0.000 claims description 9
- 230000035699 permeability Effects 0.000 abstract description 17
- 238000002156 mixing Methods 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract description 5
- 229920001684 low density polyethylene Polymers 0.000 abstract description 4
- 239000004702 low-density polyethylene Substances 0.000 abstract description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000004416 surface enhanced Raman spectroscopy Methods 0.000 abstract 1
- 229920001169 thermoplastic Polymers 0.000 abstract 1
- 239000004416 thermosoftening plastic Substances 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- VSKJLJHPAFKHBX-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 VSKJLJHPAFKHBX-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 150000001993 dienes Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 2
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 2
- PMJHHCWVYXUKFD-SNAWJCMRSA-N (E)-1,3-pentadiene Chemical group C\C=C\C=C PMJHHCWVYXUKFD-SNAWJCMRSA-N 0.000 description 1
- -1 0-methylstyrene Chemical compound 0.000 description 1
- JZHGRUMIRATHIU-UHFFFAOYSA-N 1-ethenyl-3-methylbenzene Chemical compound CC1=CC=CC(C=C)=C1 JZHGRUMIRATHIU-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000277331 Salmonidae Species 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野》 本発明は、透湿性に優れた伸縮フィルムに関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a stretch film with excellent moisture permeability.
（従来の技術）
従来より、例えば紙おむつなどの装着時に太腿部への密
着性を良くして漏れを防止する目的で、紙おむつの両サ
イドには薄肉で肌触りの良い伸縮性のフィルムが接着さ
れている。(Prior art) Traditionally, thin, stretchable films that are comfortable to the touch have been bonded to both sides of disposable diapers in order to improve adhesion to the thighs and prevent leakage when the diaper is worn, for example. ing.
このような伸縮性フィルムとしては、シラン架橋ポリオ
レフィンに熱可塑性ポリウレタンやブタジエン樹脂など
を配合し、Ｔダイ成型等のフィルム成型を行って製造す
るもの（例えば特開昭６２−２２０５２４号）等が従来
より知られている。Conventionally, such stretchable films are manufactured by blending thermoplastic polyurethane, butadiene resin, etc. with silane crosslinked polyolefin, and performing film molding such as T-die molding (for example, JP-A No. 62-220524). better known.
しかしながら、これら従来の伸縮性フィルムは、おむつ
力バーとの接着性や耐熱性などに優れる反面、透湿性が
極めて小さく、装着時にはむれてフィルム接触部分の肌
荒れや不快感を生しるという欠点があった。However, while these conventional stretchable films have excellent adhesion to the diaper force bar and heat resistance, they have extremely low moisture permeability and have the disadvantage that they peel when worn, causing rough skin and discomfort in the area in contact with the film. there were.
一方、一般にプラスチックフィルムに透湿性を付与する
には炭酸カルシウム等の無機充填剤を多量に混合してプ
ラスチックの融点付近の温度で延伸し、プラスチックと
無機充填剤との界面に剥離を生ぜしめて多孔質化すると
いう方法が取られているが、上記のような伸縮性フィル
ムにおいては、フィルムが非常に柔軟で良く伸びるため
、延伸しても無機充填剤との界面に剥離が生じにくい、
また延伸後にフィルムが収縮し易いといったことから、
充分に多孔質化が計れないという問題が生じている。On the other hand, in general, in order to impart moisture permeability to plastic films, a large amount of inorganic filler such as calcium carbonate is mixed and stretched at a temperature near the melting point of the plastic, which causes peeling at the interface between the plastic and the inorganic filler and creates porosity. However, since the stretchable film described above is very flexible and stretches well, it is difficult to peel off at the interface with the inorganic filler even when stretched.
Also, since the film tends to shrink after stretching,
A problem arises in that sufficient porosity cannot be measured.
（発明が解決しようとする課題）
以上の点に鑑みて、本発明は伸縮性フィルムにおいて、
その伸縮性や柔軟性を損なうことなく、充分に多孔質化
し透湿性を大幅に向上させた透湿性伸縮フィルムを提供
することを目的とする。(Problems to be Solved by the Invention) In view of the above points, the present invention provides a stretch film that includes:
The purpose of the present invention is to provide a moisture permeable stretch film that is sufficiently porous and has significantly improved moisture permeability without impairing its stretchability or flexibility.
（課題を解決するための手段》
本発明はずなわち、（イ）熱可塑性ポリウレタンと、（
ロ）スチレン系エラストマーと、（ハ）ポリオレフィン
とからなる組成物１００重量部に、炭酸カルシウム５０
〜２００重量部を添加混合し、この混合物を０〜３５℃
の温度で延伸することを特徴とする透湿性伸縮フィルム
に関する。(Means for Solving the Problems) The present invention is supposed to include (a) thermoplastic polyurethane, (
b) 50 parts by weight of calcium carbonate to 100 parts by weight of a composition consisting of a styrene elastomer and (c) polyolefin.
~200 parts by weight was added and mixed, and the mixture was heated to 0~35°C.
The present invention relates to a moisture permeable stretch film that is stretched at a temperature of .
本発明は、（ハ）ポリオレフィンを配合することにより
、（イ）熱可塑性ポリウレタンのような柔らかくゴム弾
性に富む樹脂における延伸後の収縮を低減させることが
できるので、炭酸カルシウムを混合して延伸、多孔質化
させた後の樹脂の縮みを防止し、従って透湿性を大幅に
向上させることができる。さらに延伸の温度を０〜３５
℃の範囲内に規定することにより、柔らかくゴム弾性に
富む組成物においても炭酸カルシウムとの界面剥離を生
ぜしめて多孔質化を計り、また多孔質化させた後の樹脂
の縮みを防止し透湿性を向上させる効果をいっそう高め
ることができる。また、（イ）熱可塑性ポリウレタンと
（ハ）ポリオレフィンは比較的相溶性が悪いが、（ロ）
スチレン系エラストマーを添加することにより相溶性は
改善され各成分は均質に混合される。In the present invention, by blending (c) polyolefin, it is possible to reduce (i) shrinkage after stretching in a soft and rubber-elastic resin such as thermoplastic polyurethane. It is possible to prevent the resin from shrinking after it is made porous, and therefore to greatly improve its moisture permeability. Furthermore, the stretching temperature was set to 0 to 35.
By setting the temperature within the range of °C, even in soft and rubbery elastic compositions, interfacial separation with calcium carbonate is caused to make them porous, and shrinkage of the resin after being made porous is prevented and moisture permeability is improved. The effect of improving can be further enhanced. In addition, (a) thermoplastic polyurethane and (c) polyolefin are relatively incompatible, but (b)
By adding the styrene elastomer, compatibility is improved and each component is mixed homogeneously.
本発明の成分（イ）熱可塑性ポリウレタンは、ゴム弾性
、伸び、引裂き強度等の特性を得られるフィルムに付与
し、またその配合割合は（イ）、（ロ）および（ハ）よ
りなる組成物の２０〜８０重量％が望ましく、これより
少ないと伸びが小さく、これより多いと透湿性が低下す
る傾向がある。Component (a) of the present invention is a thermoplastic polyurethane that is added to a film that provides properties such as rubber elasticity, elongation, and tear strength, and its blending ratio is a composition consisting of (a), (b), and (c). A content of 20 to 80% by weight is desirable; if it is less than this, the elongation will be low, and if it is more than this, the moisture permeability will tend to decrease.
本発明の成分（０）スチレン系エラストマーは、（イ）
熱可塑性ポリウレタンと（ハ）ポリオレフィンの双方に
対して相溶性が良く−具体的にはスチレンと共役ジエン
の共重合体等がある。スチレン−共役ジエン共重合体と
しては、スチレン、α−メチルスチレン、０−メチルス
チレン、ｍ−メチルスチレン、ｐ−メチルスチレン等の
スチレン ーと、エチレン、ブタジエン、イソプレン、
ピペリレン等の共役ジエンとの共重合体がある。特にス
チレンブタジエンスチレン（ＳＢＳ） 、スチレンエチ
レンブタジエンスチレン（ＳＥＢＳ）、スチレンイソプ
レンスチレン（ＳＩＳ）等が好適する。The component (0) styrenic elastomer of the present invention is (a)
It has good compatibility with both thermoplastic polyurethane and (iii) polyolefin; specific examples include copolymers of styrene and conjugated diene. Examples of styrene-conjugated diene copolymers include styrene such as styrene, α-methylstyrene, 0-methylstyrene, m-methylstyrene, and p-methylstyrene; ethylene, butadiene, isoprene,
There are copolymers with conjugated dienes such as piperylene. Particularly suitable are styrene-butadiene-styrene (SBS), styrene-ethylene-butadiene-styrene (SEBS), styrene-isoprene-styrene (SIS), and the like.
また、成分（ロ）の配合割合は（イ）、（ロ）、（ハ）
の合計に対して１０〜５０重量％が望ましく、これより
少ないとこれら三つの成分の相溶性が悪くなり、またゴ
ム弾性も低下し、これより多いと透湿性等が低下する。Also, the blending ratio of component (B) is (A), (B), and (C).
It is desirable that the amount is 10 to 50% by weight based on the total amount of .If the amount is less than this, the compatibility of these three components will be poor and the rubber elasticity will also be decreased, and if it is more than this, the moisture permeability etc. will be decreased.
本発明の成分（ハ）ポリオレフィンは、ゴム状の（イ）
と（ロ）とともに配合した組成物の延伸後の収縮を低減
させることができ、例えば低密度ポリエチレン（ＬＤＰ
Ｒ）−直鎖状低密度ポリエチレン（Ｌ−ＬＤＰＦ、）、
エチレン−酢酸ビニル共重合＃（Ｆ、ＶＡ）等がある。Component (c) polyolefin of the present invention is rubber-like (i)
It is possible to reduce the shrinkage after stretching of the composition blended with and (b), for example, low density polyethylene (LDP).
R)-Linear low density polyethylene (L-LDPF, ),
Examples include ethylene-vinyl acetate copolymer #(F, VA).
また、成分（ハ）の配合割合は（イ）、（ロ）、（ハ）
の合計に対して１０〜５０重量％が望ましく、これより
少ないと透湿性が悪く、これより多いと引裂き強度や＝
５ −
伸びが悪くなる。In addition, the blending ratio of component (c) is (a), (b), and (c).
It is desirable that the amount is 10 to 50% by weight based on the total weight of
5 - Poor elongation.
本発明の透湿性伸縮フィルムは、上記成分（イ）、ｃ口
）および（ハ）を配合した組成物１００重量部に、炭酸
カルシウム５０〜２００重量部を添加混合し充分に混練
した混合物をフィルム加工し、次いでこれを０〜３５℃
の温度で延伸して多孔質化することにより製造される。The moisture permeable stretch film of the present invention is produced by adding and mixing 50 to 200 parts by weight of calcium carbonate to 100 parts by weight of the composition containing the above components (a), c) and (c), and kneading the mixture thoroughly. processed, then heated to 0-35℃
It is produced by stretching at a temperature of
炭酸カルシウムは透湿性を良好にするために平均粒径５
μ以下、より好ましくは１〜２μのものを使用すると良
い。またその配合量が５０重量部未満であると充分な透
湿性が付与できず、２００重量部を越えると伸び等が低
下しふうあいも悪くなる。Calcium carbonate has an average particle size of 5 to improve moisture permeability.
It is preferable to use a particle size of less than μ, more preferably 1 to 2 μ. If the amount is less than 50 parts by weight, sufficient moisture permeability cannot be imparted, and if it exceeds 200 parts by weight, elongation etc. will be reduced and the fit will be poor.
また、炭酸カルシウムと上記成分（イ）、（ロ）および
（ハ）を混練する際には、連続混練機、加圧ニーダーな
どを用い、混練して得られた混合物はインフレーション
フィルム成型やＴダイ成型等、溶融押し出し成型法によ
りフィルム状に成型することができる。こうして得られ
たフィルムをθ〜３５℃の温度でロール延伸等通常の延
伸処理を施すことにより、フィルムは多孔質化して優れ
た透湿性を有するようになる。延伸温度を３５℃より高
くすると、炭酸カルシウムと組成物間の界面剥離が生じ
にくくなり透湿性が著しく低下する。また０℃よりも温
度が低いとフィルムに延伸が掛りにくくなる。In addition, when kneading calcium carbonate and the above components (a), (b), and (c), a continuous kneader, a pressure kneader, etc. are used, and the mixture obtained by kneading is molded into a blown film or by T-die. It can be formed into a film by a melt extrusion method such as molding. By subjecting the film thus obtained to a normal stretching process such as roll stretching at a temperature of θ to 35°C, the film becomes porous and has excellent moisture permeability. When the stretching temperature is higher than 35° C., interfacial peeling between calcium carbonate and the composition becomes difficult to occur, resulting in a significant decrease in moisture permeability. Further, if the temperature is lower than 0°C, it becomes difficult to stretch the film.
なお、本発明の透湿性伸縮フィルムは、粘着剤や接着剤
による層を設けて粘着テープとすることも可能であるが
、フィルム自体の熱可塑性を利用してその使用部位ヘヒ
ートシールにより取り付けることができる。Note that the moisture permeable stretch film of the present invention can be made into an adhesive tape by providing a layer of adhesive or adhesive, but it can also be attached to the site of use by heat sealing using the thermoplasticity of the film itself. .
（実施例） 本発明の実施例について説明する。(Example) Examples of the present invention will be described.
実施例１〜８
第１表に示す配合割合で成分（イ）、（ロ）、（ハ）お
よび炭酸カルシウムを加圧ニーダーにより混練し−この
混合物をインフレーションフィルム成型機によりフィル
ム状に成型した。ついでこれを温度２０℃、延伸倍率２
倍の条件で延伸処理して膜厚４０μの透湿性伸縮フィル
ムを製達した。Examples 1 to 8 Components (a), (b), (c) and calcium carbonate were kneaded in the proportions shown in Table 1 using a pressure kneader, and the mixture was molded into a film using a blown film molding machine. Then, this was stretched at a temperature of 20°C and a stretching ratio of 2.
A moisture permeable stretch film with a thickness of 40 μm was produced by stretching under twice the conditions.
得られたフィルムについて次のように試験を行った。The obtained film was tested as follows.
透ｍ 性ｉ、ｔ、ＪＩＳ Ｚ ０２０８に準拠して
２４時間、■ｄ当たりに透過した水蒸気の重量を測定し
た６引き裂き強度はＪＩＳ Ｋ ６７７２に準拠し
て４０μ厚さのフィルムにおける引き裂き荷重を測定し
た。また、伸び（％）の測定とふうあいの評価を行った
。m Permeability i, t, 24 hours in accordance with JIS Z 0208, the weight of water vapor permeated per d was measured 6 Tear strength was measured in accordance with JIS K 6772 by measuring the tearing load on a 40μ thick film did. In addition, elongation (%) was measured and texture was evaluated.
次に、延伸温度による透湿度の変化を第２表に示す。こ
れは実施例４と同様の配合および方法により成型したフ
ィルムを８０．３０．２０、ｌＯ℃の各温度において延
伸し、同様に透湿性を測定したものである。Next, Table 2 shows the change in moisture permeability depending on the stretching temperature. A film formed using the same formulation and method as in Example 4 was stretched at temperatures of 80°C, 30°C, and 10°C, and its moisture permeability was measured in the same manner.
比較例１
比較としてし−ＬＤＰＲと炭酸カルシウムのみを１対１
に混合した混合物を、実施例１と同様にしてフィルム成
型し、これを８０℃の温度において延伸して透湿フィル
ムを製造した。このフィルムを用いて実施例１と同様の
試験をした。結果を第１表に示す。Comparative Example 1 As a comparison, only LDPR and calcium carbonate were mixed 1:1
The mixture was formed into a film in the same manner as in Example 1, and this was stretched at a temperature of 80° C. to produce a moisture permeable film. The same test as in Example 1 was conducted using this film. The results are shown in Table 1.
第１表
第２表
■鱒醒（Ｃ） １８０１３０１２０１１０１対１ｂ
ｉ！ｔ（ｔ／−・２４μ）口３００留２２００署３００
０署３８００１□９□
（発明の効果）
以上、本発明の透湿性伸縮フィルムは、伸縮性や柔軟性
を良好に保持しながら、多孔質化を実現しており透湿性
が大幅に向上している。Table 1 Table 2 ■ Trout (C) 1801301201101 vs. 1b
i! t (t/-・24μ) mouth 300 station 2200 station 300
0 38001□9□ (Effects of the Invention) As described above, the moisture permeable stretch film of the present invention has achieved porousness while maintaining good elasticity and flexibility, and has greatly improved moisture permeability. There is.
Claims (1)
系エラストマーと、（ハ）ポリオレフィンとからなる組
成物１００重量部に、炭酸カルシウム５０〜２００重量
部を添加混合し、この混合物を０〜３５℃の温度で延伸
することを特徴とする透湿性伸縮フィルム。(1) Add and mix 50 to 200 parts by weight of calcium carbonate to 100 parts by weight of a composition consisting of (a) thermoplastic polyurethane, (b) styrene elastomer, and (c) polyolefin, and mix this mixture with 0 to 200 parts by weight. A moisture permeable stretch film characterized by being stretched at a temperature of 35°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28843589A JPH03149233A (en) | 1989-11-06 | 1989-11-06 | Moisture-permeable stretchable film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28843589A JPH03149233A (en) | 1989-11-06 | 1989-11-06 | Moisture-permeable stretchable film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03149233A true JPH03149233A (en) | 1991-06-25 |
Family
ID=17730178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28843589A Pending JPH03149233A (en) | 1989-11-06 | 1989-11-06 | Moisture-permeable stretchable film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03149233A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0659808A1 (en) * | 1993-12-24 | 1995-06-28 | Tokuyama Corporation | Porous film and process for production thereof |
| WO1999060050A1 (en) * | 1998-05-15 | 1999-11-25 | Clopay Plastic Products Company, Inc. | High speed method of making microporous film products |
| EP1834993A1 (en) * | 2006-02-27 | 2007-09-19 | Industrial Technology Research Institute | Water-vapor permeable polyurethane-based films and textiles |
| CN103739962A (en) * | 2014-01-02 | 2014-04-23 | 上海紫华企业有限公司 | Polyolefin microporous air-permeable membrane and preparation method thereof |
| JP2016538364A (en) * | 2013-10-25 | 2016-12-08 | ダウ グローバル テクノロジーズ エルエルシー | Polyolefin-based film having improved water vapor transmission rate |
-
1989
- 1989-11-06 JP JP28843589A patent/JPH03149233A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0659808A1 (en) * | 1993-12-24 | 1995-06-28 | Tokuyama Corporation | Porous film and process for production thereof |
| WO1999060050A1 (en) * | 1998-05-15 | 1999-11-25 | Clopay Plastic Products Company, Inc. | High speed method of making microporous film products |
| AU739260B2 (en) * | 1998-05-15 | 2001-10-11 | Clopay Plastic Products Company, Inc. | High speed method of making microporous film products |
| EP1482005A2 (en) * | 1998-05-15 | 2004-12-01 | Clopay Plastic Products Company, Inc. | High speed method of making microporous film products |
| CZ298026B6 (en) * | 1998-05-15 | 2007-05-30 | Clopay Plastic Products Company, Inc. | High-speed process for producing products in the form of microporous thermoplastic film and film produced thereby |
| EP1834993A1 (en) * | 2006-02-27 | 2007-09-19 | Industrial Technology Research Institute | Water-vapor permeable polyurethane-based films and textiles |
| JP2016538364A (en) * | 2013-10-25 | 2016-12-08 | ダウ グローバル テクノロジーズ エルエルシー | Polyolefin-based film having improved water vapor transmission rate |
| CN103739962A (en) * | 2014-01-02 | 2014-04-23 | 上海紫华企业有限公司 | Polyolefin microporous air-permeable membrane and preparation method thereof |
| CN103739962B (en) * | 2014-01-02 | 2016-10-12 | 上海紫华企业有限公司 | Polyolefin micropore ventilated membrane and preparation method thereof |
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