JPS63117043A - Production of air-permeable propylene resin film - Google Patents
Production of air-permeable propylene resin filmInfo
- Publication number
- JPS63117043A JPS63117043A JP26214486A JP26214486A JPS63117043A JP S63117043 A JPS63117043 A JP S63117043A JP 26214486 A JP26214486 A JP 26214486A JP 26214486 A JP26214486 A JP 26214486A JP S63117043 A JPS63117043 A JP S63117043A
- Authority
- JP
- Japan
- Prior art keywords
- film
- resin
- propylene
- stretching
- temperature
- 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
- 229920005989 resin Polymers 0.000 title claims abstract description 35
- 239000011347 resin Substances 0.000 title claims abstract description 35
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000011256 inorganic filler Substances 0.000 claims abstract description 16
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 16
- 239000004711 α-olefin Substances 0.000 claims abstract description 15
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 230000035699 permeability Effects 0.000 abstract description 12
- 239000005022 packaging material Substances 0.000 abstract description 3
- 229920006026 co-polymeric resin Polymers 0.000 abstract description 2
- 238000004891 communication Methods 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- -1 polypropylene Polymers 0.000 description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 229920001400 block copolymer Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000012760 heat stabilizer Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 229920005604 random copolymer Polymers 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 1
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 101150027973 hira gene Proteins 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005673 polypropylene based resin Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920001384 propylene homopolymer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
【発明の詳細な説明】
げ）産業上の利用分野
本発明は、プロピレン系樹脂と無機充填剤との組成物か
らなるフィルムを少くとも一軸方向に延伸することより
なる通気性プロピレン系樹脂フィルムの製造方法に関し
、紙おむつ、あるいは生理用品等の衛生用品、包装材等
への利用に適する、高度の通気性を有するプロピレン系
樹脂フィルムの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION G) Industrial Application Field The present invention relates to the production of an air-permeable propylene resin film by stretching a film made of a composition of a propylene resin and an inorganic filler in at least one direction. The present invention relates to a method for producing a highly breathable propylene resin film suitable for use in disposable diapers, sanitary products such as sanitary products, packaging materials, and the like.
（口）従来の技術
従来より、ポリプロピレン、ポリエチレン等のポリオレ
フィン系樹脂と無機充填剤との組成物からなるフィルム
を一軸あるいは二軸方向に延伸して、フィルムに連通し
たボイドを発生させて通気性フィルムを製造する方法は
多数提案されており、この通気性フィルムは、紙おむつ
、あるいは生理用品等の衛生用品、包装材料等用途への
応用が試みられ始めている。(Example) Conventional technology Conventionally, a film made of a composition of a polyolefin resin such as polypropylene or polyethylene and an inorganic filler is stretched uniaxially or biaxially to generate voids that communicate with the film to improve air permeability. Many methods for producing films have been proposed, and attempts are being made to apply these breathable films to sanitary products such as disposable diapers or sanitary products, packaging materials, and the like.
しかしながら、ポリプロピレンを基材樹脂としたものは
、無機充填剤との組成物の延伸性が劣っていて充分な通
気性を発現し得す、また、各種添加剤を加えて延伸性の
改良を図っても、高度の通気性を得るには到っていなか
った。However, polypropylene-based resins have poor stretchability in compositions with inorganic fillers and cannot exhibit sufficient air permeability, and various additives may be added to improve stretchability. However, it was not possible to achieve a high degree of breathability.
ヒラ発明が解決しようとする問題点
以上のように、プロピレン系樹脂と無機充填剤との組成
物からなるフィルム！少くとも一軸方向に延伸して通気
性フィルムを製造する従来の方法では、高度の通気性を
有するプロピレン系樹脂フィルムを製造するには到って
いないのが現状であり、本発明は、従来の製造方法にお
けるこの問題点を屏決することを目的としてなされたも
のである０
に）問題点全解決するための手段
本発明の通気性プロピレン系樹脂フィルムの製造方法は
、プロピレン−α−オレフィン共共重合樹脂４御〜８７
係との組成物からなるフィルムを、該プロピレン−α−
オレフィン共重合樹脂の融点より１００℃から２５℃低
い範囲の温度で、少くとも一軸方向に延伸することを特
徴とする。Problems to be Solved by the Hira Invention As mentioned above, a film made of a composition of propylene resin and an inorganic filler! At present, the conventional method of producing a breathable film by stretching in at least one direction has not been able to produce a propylene-based resin film with a high degree of breathability. The present invention was made with the aim of solving this problem in the manufacturing method. 0) Means for solving all the problems The method for manufacturing a breathable propylene resin film of the present invention uses a co-propylene-α-olefin. A film consisting of a composition of polymeric resins 4 to 87 is coated with the propylene-α-
It is characterized by stretching in at least one direction at a temperature in the range of 100°C to 25°C lower than the melting point of the olefin copolymer resin.
ここで、プロピレン−α−オレフィン共重合樹脂とは、
プロピレンと、エチＶン、ブテン−１、ペンテン−１１
ヘキセン−１、４−メチルペンテン−１等のα−オレフ
ィンとのブロックまたはランダム共重合体をいい、α−
オレフィン含有量が好ましくは０．２〜２０重ｉチ、特
に好ましくは０、５〜１５重量％のものである。α−オ
レフィン含有量が少いと、無機充填剤の分散性が不良と
なって延伸性が劣り、ボイドを連通させることが困難と
なる傾向が大となり、また、α−オレフィンの含有量が
多過ぎると、延伸によってボイドを発生させることが困
難となる傾向が大となり、いずれにしろ開度の通気性を
有するフィルムが得られにくくなる。Here, the propylene-α-olefin copolymer resin is
Propylene, ethyl V, butene-1, pentene-11
Refers to block or random copolymers with α-olefins such as hexene-1, 4-methylpentene-1, and α-
The olefin content is preferably from 0.2 to 20% by weight, particularly preferably from 0.5 to 15% by weight. If the α-olefin content is low, the dispersibility of the inorganic filler will be poor, resulting in poor stretchability, and it will be difficult to connect voids, and if the α-olefin content is too high, In this case, it becomes more difficult to generate voids by stretching, and in any case, it becomes difficult to obtain a film having good air permeability.
なお、この共重合樹脂のメルトフローＶ−）は、０、５
〜１ ５ ｔ ７ １ ０分であるのが好ましく、１〜
１ ２ ｔ ７ １ ０分であるのが特に好ましい。The melt flow V-) of this copolymer resin is 0,5
It is preferable that it is 15t710 minutes, and 1 to 710 minutes.
Particularly preferred is 12t710 minutes.
また、無機充填剤は、炭酸カルシウム、酸化カルシウム
、メルク、クレー、シリカ、酸化チタン、アルミナ、硫
酸アルミニウム等であり、単独あるいは混合状態で用い
ることができる。好ましい無機充填剤の形態としては、
板状、棒状、針状以外の球状、粒状、不定形等であり、
その平均粒径は０、１〜５μ、好ましくは０．６〜３μ
である。平均粒径が０．１μ未満になるとフィルムの延
伸時の伸びがなくなって延伸が困難になり、５μを越え
ると延伸フィルムの表面の凹凸が荒くなり通気性フィル
ムとして望ましくなくなるとともに、６０μ以下の薄い
フィルムを製造するにおいて連続安定延伸性が損われる
。Inorganic fillers include calcium carbonate, calcium oxide, Merck, clay, silica, titanium oxide, alumina, aluminum sulfate, etc., and can be used alone or in a mixed state. Preferred forms of the inorganic filler include:
They are spherical, granular, irregular shapes, etc. other than plate-like, rod-like, and needle-like.
Its average particle size is 0.1-5μ, preferably 0.6-3μ
It is. If the average particle size is less than 0.1μ, the film will not elongate during stretching, making it difficult to stretch, and if it exceeds 5μ, the surface of the stretched film will become rough, making it undesirable as a breathable film. Continuous stable stretchability is impaired in film production.
プロピレン−α−オレフィン共重合樹脂と無機充填剤と
の組底比は、プロピレン−α−オレフィン共重合樹脂が
４２〜８７体積係、好ましくは５５〜８０体積係、無機
充填剤が５８〜１３体槓チ、好ましくは４５〜２０体積
チの範囲である。無機充填剤が１３体積チ未？！４にな
ると、プロビンノーα−オレフィン共重合樹脂と無機充
填剤との界面が剥離してできる＠接したボンドどうしが
連通しなくなり、通気性が得られなくなる。また、５８
体積チを越えると、フィルムの延伸時の伸びがなくなり
、延伸が困難になる。The composition ratio of the propylene-α-olefin copolymer resin and the inorganic filler is such that the propylene-α-olefin copolymer resin is 42 to 87 volume parts, preferably 55 to 80 volume parts, and the inorganic filler is 58 to 13 parts. It is preferably in the range of 45 to 20 volumes. Is the inorganic filler not 13 volumes thick? ! When it becomes 4, the interface between the provin no α-olefin copolymer resin and the inorganic filler peels off, and the bonds that are in contact with each other no longer communicate with each other, making it impossible to obtain air permeability. Also, 58
When the volume exceeds 1, the film loses its elongation during stretching, making stretching difficult.
プロピレン−α−オレフィン共重合樹脂と無機充填剤と
は、必要に応じて、他のポリオレフィン系樹脂等、およ
び、脂肪族アルコール系脂肪酸エステル、低分子量炭化
水素重合体等の軟化剤、分散剤、熱安定剤、紫外線吸収
剤、滑剤、顔料、帯電防止剤等ｔさらに添加して、−軸
あるいは二軸押出機、バンバリーミキサ−、ニーダ−、
ミキシングロール等によって加熱混練することにより組
成物とした後、公知のＴダイ底形、インフレーション成
形等でフィルムとなして、該フィルムを一軸あるいは二
軸方向に延伸する。The propylene-α-olefin copolymer resin and inorganic filler may include other polyolefin resins, softeners such as aliphatic alcohol fatty acid esters, low molecular weight hydrocarbon polymers, dispersants, etc., as necessary. Heat stabilizers, ultraviolet absorbers, lubricants, pigments, antistatic agents, etc. can be added to a -screw or twin-screw extruder, Banbury mixer, kneader, etc.
A composition is prepared by heating and kneading with a mixing roll or the like, and then formed into a film by known T-die bottom molding, inflation molding, etc., and the film is stretched uniaxially or biaxially.
この延伸方法としては、例えば、−軸延伸ではフラット
状でのロール延伸、オープン延伸、およびチューブ状延
伸等、二軸延伸ではフラット状でのテンター延伸、チュ
ーブ状でのインフレーション延伸、マンドレル延伸等、
公知の方法が用いられる。Examples of this stretching method include, for example, flat roll stretching, open stretching, and tubular stretching for -axial stretching, and tenter stretching for a flat shape, inflation stretching for a tubular shape, and mandrel stretching for biaxial stretching.
Known methods are used.
本発明においては、この延伸において、延伸温ｉ’ｒ，
用いたプロピレン−α−オレフィン共重合樹脂の融点
より１００℃から２５℃低い範囲の温度とすることが必
須である。この延伸温度が、前記の下限温度より低い場
曾には延伸することが因離となり、一方、前記の上限温
度より高い場合には、高度の通気性を有する延伸フィル
ムが得られないこととなる。In the present invention, in this stretching, the stretching temperature i'r,
It is essential that the temperature be 100°C to 25°C lower than the melting point of the propylene-α-olefin copolymer resin used. If this stretching temperature is lower than the above-mentioned lower limit temperature, stretching will be impossible, whereas if it is higher than the above-mentioned upper limit temperature, a stretched film having a high degree of air permeability will not be obtained. .
なお、延伸倍率は１．５〜１２倍程度とする。Note that the stretching ratio is approximately 1.5 to 12 times.
また、延伸フィルムの寸法精度全安定化させるため、通
常は、延伸後に熱処理する。Further, in order to fully stabilize the dimensional accuracy of the stretched film, heat treatment is usually performed after stretching.
本発明によって製造される通気性プロピレン系樹脂フィ
ルムの物性は、プロピレン−α−オレフィン共重合樹脂
の種類、物性、無機充填剤の種類、粒径、充填割合、延
伸方向および延伸温度、延伸倍率等により自由にコント
ロール可能である。通気性フィルムの厚みが２５〜１５
０μの場合、ＪＩＳ ＺＯ２０８で測定シタ透湿度は
３００〜２５０００１／ｒｒ？−２４時間の範囲の値！
有するのが望ましく、厚みは、６０μ以下が好ましく、
特には５０μ以下が好ましい。The physical properties of the breathable propylene resin film produced by the present invention include the type and physical properties of the propylene-α-olefin copolymer resin, the type of inorganic filler, particle size, filling ratio, stretching direction and temperature, stretching ratio, etc. can be freely controlled by The thickness of the breathable film is 25-15
In the case of 0μ, the moisture permeability measured by JIS ZO208 is 300 to 250001/rr? -Values in the 24 hour range!
The thickness is preferably 60μ or less,
In particular, it is preferably 50μ or less.
（ホ）作用および効果
本発明の通気性プロピレン系樹脂フィルムの製造方法は
、プロピレン系樹脂としてグロビレンーα−オレフィン
共重合樹脂を用いるので、無機光項剤が該樹脂中に微細
に分散し、ボイドの発生を微細化すると共にその連通を
均一化し、かつ、特定範囲の温度で延伸することと相俟
って、高度の通気性を有するプロピレン系樹脂フィルム
を製造することができるものである。(e) Functions and Effects Since the method for producing a breathable propylene resin film of the present invention uses a globylene-α-olefin copolymer resin as the propylene resin, the inorganic photovoltaic agent is finely dispersed in the resin and voids are formed. By miniaturizing the generation of particles, making their communication uniform, and stretching at a specific temperature range, it is possible to produce a propylene-based resin film with a high degree of air permeability.
（へ）実施例
実施例１
プロピレン−エチレンブロック共重合樹脂（エチレン含
有ｔ３重ｉ％、メルトフローレート９２／１０分、融点
１６４℃）パウダー６５体積チ、重質炭酸カルシウム（
平均粒径１．２μ）３５体積係、フロピレン−エチレン
ブロック共重合樹脂１００重量部に対して熱安定剤（２
，６−ジーｔ−ブチル−ｐ−クレゾール）０．１重量部
、重質炭酸カルシウム１００重量部に対して分散剤（オ
ンフィン酸）１．０重量部、およびこれらの合計量１０
０重量部に対して精製ヒマシ油（グリセリントリリシル
レート８５チ以上含有、伊藤製油社製）５重量部全スー
パーミキサーで５分間混合した後、二軸押出機より２０
０℃でストランド状に押出した後、ベレット状に切断し
た。(To) Examples Example 1 65 volumes of propylene-ethylene block copolymer resin (ethylene content t3 weight i%, melt flow rate 92/10 minutes, melting point 164°C) powder, heavy calcium carbonate (
Average particle size: 1.2 μ) 35 volume ratio, heat stabilizer (2
, 6-di-t-butyl-p-cresol) 0.1 part by weight, 1.0 parts by weight of a dispersant (onphiic acid) per 100 parts by weight of heavy calcium carbonate, and a total amount of these 10 parts by weight.
0 parts by weight to 5 parts by weight of refined castor oil (containing 85% or more glycerin trilysyllate, manufactured by Ito Oil Co., Ltd.). After mixing in a super mixer for 5 minutes, 20 parts by weight using a twin-screw extruder.
After extruding into a strand shape at 0°C, it was cut into a pellet shape.
／Ｄ２５の押出機に取り付けたＴダイより２３０℃で押
出した後、２５℃の表面温度の冷却ロールにて冷却固化
して厚み７５μのフィルムとした。It was extruded at 230°C through a T-die attached to a /D25 extruder, and then cooled and solidified using a cooling roll with a surface temperature of 25°C to form a film with a thickness of 75μ.
このフィルム全１ ロール延伸法により、延伸温度１０
０℃、延伸倍率４．０倍で縦方向に延伸し、厚み４０μ
の通気性プロピレン系樹脂フィルムを製造した。This entire film was stretched at a stretching temperature of 10% by roll stretching method.
Stretched in the longitudinal direction at 0°C and a stretching ratio of 4.0 times to a thickness of 40μ
A breathable propylene resin film was manufactured.
得られた通気性フィルムについて、ＪＩＳ ＺＯ２０
８に基づいて測定した透湿度を表に示す０実施例２
実施例１におけるフロピレンーエチレンブロック共重合
樹脂に代えて、プロピレン−エチレンランダム共重合樹
脂（エチレン含有量２．３重量％、メルトフローレート
９ ｆ ／ １０分、融点１５２℃）を用いた外は、実
施例１と同様にして通気性フィルムを製造した。Regarding the obtained breathable film, JIS ZO20
Example 2 In place of the fluoropylene-ethylene block copolymer resin in Example 1, propylene-ethylene random copolymer resin (ethylene content 2.3% by weight, melt A breathable film was produced in the same manner as in Example 1, except that a flow rate of 9 f/10 min and a melting point of 152°C were used.
得られた通気性フィルムの透湿度の測定結果を表に示す
。The measurement results of the moisture permeability of the obtained breathable film are shown in the table.
比較例１
実Ｍ例１におけるプロビンンーエチレンブロック共重合
樹脂に代えて、プロピレンの単独重合体（メルトフロー
レートｚ、３ｒ／１ｏ分、融点１６５℃）を用いた外は
、実施例１と同様にしてフィルムｗＭ造した。その透湿
度の測定結果を表に示す。Comparative Example 1 Same as Example 1 except that propylene homopolymer (melt flow rate z, 3r/1o min, melting point 165°C) was used instead of the propylene-ethylene block copolymer resin in Example M Example 1. I made the film wM. The measurement results of the moisture permeability are shown in the table.
実施例３．４、比較例２．３
実施例１における延伸温度全８０℃（実施例３）、１２
０℃（実施例４ン、１４０℃（比較例３）、および１６
０℃（比較例４）とした外は、実施例１と同様にしてフ
ィルムを製造した。Example 3.4, Comparative Example 2.3 Total stretching temperature in Example 1: 80°C (Example 3), 12
0°C (Example 4), 140°C (Comparative Example 3), and 16°C
A film was produced in the same manner as in Example 1, except that the temperature was 0°C (Comparative Example 4).
得られたフィルムの透湿度の測定結果を表に示すＯ
なお、各実施例、比較例とも、延伸フィルムの厚みが４
０μとなるように、押出機の吐出ｔｖ制御した。The measurement results of the moisture permeability of the obtained films are shown in the table.
The discharge tv of the extruder was controlled so that it was 0μ.
Claims (1)
％と無機充填剤５８〜１３体積％との組成物からなるフ
ィルムを、該プロピレン−α−オレフィン共重合樹脂の
融点より１００℃から２５℃低い範囲の温度で、少くと
も一軸方向に延伸することを特徴とする通気性プロピレ
ン系樹脂フィルムの製造方法。A film consisting of a composition of 42 to 87% by volume of a propylene-α-olefin copolymer resin and 58 to 13% by volume of an inorganic filler is prepared in a range from 100°C to 25°C lower than the melting point of the propylene-α-olefin copolymer resin. 1. A method for producing a breathable propylene resin film, comprising stretching in at least one axis at a temperature of .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26214486A JPS63117043A (en) | 1986-11-04 | 1986-11-04 | Production of air-permeable propylene resin film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26214486A JPS63117043A (en) | 1986-11-04 | 1986-11-04 | Production of air-permeable propylene resin film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63117043A true JPS63117043A (en) | 1988-05-21 |
Family
ID=17371664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26214486A Pending JPS63117043A (en) | 1986-11-04 | 1986-11-04 | Production of air-permeable propylene resin film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63117043A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5082900A (en) * | 1989-03-29 | 1992-01-21 | Chisso Corporation | Opacified molded product |
| US5084519A (en) * | 1990-02-20 | 1992-01-28 | Chisso Corporation | Stretched article having pearly gloss and process for preparing same |
| EP0566110A2 (en) * | 1992-04-17 | 1993-10-20 | Karl H. Sengewald GmbH & Co. KG | Reinforcing polymeric strips |
| JPH06100720A (en) * | 1990-11-13 | 1994-04-12 | Chem Inst Chinese Acad Sinica | Microporous film of superpermeable polypropylene and its production |
-
1986
- 1986-11-04 JP JP26214486A patent/JPS63117043A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5082900A (en) * | 1989-03-29 | 1992-01-21 | Chisso Corporation | Opacified molded product |
| US5114638A (en) * | 1989-03-29 | 1992-05-19 | Chisso Corporation & Maruzen Petrochemical Co., Ltd. | Process for producing an opacified molded product |
| US5084519A (en) * | 1990-02-20 | 1992-01-28 | Chisso Corporation | Stretched article having pearly gloss and process for preparing same |
| JPH06100720A (en) * | 1990-11-13 | 1994-04-12 | Chem Inst Chinese Acad Sinica | Microporous film of superpermeable polypropylene and its production |
| EP0566110A2 (en) * | 1992-04-17 | 1993-10-20 | Karl H. Sengewald GmbH & Co. KG | Reinforcing polymeric strips |
| EP0566110A3 (en) * | 1992-04-17 | 1995-05-17 | Sengewald Karl H Gmbh | Reinforcing polymeric strips. |
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