JP3462532B2 - Flexible film - Google Patents
Flexible filmInfo
- Publication number
- JP3462532B2 JP3462532B2 JP20737593A JP20737593A JP3462532B2 JP 3462532 B2 JP3462532 B2 JP 3462532B2 JP 20737593 A JP20737593 A JP 20737593A JP 20737593 A JP20737593 A JP 20737593A JP 3462532 B2 JP3462532 B2 JP 3462532B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- flexibility
- weight
- stress relaxation
- styrene
- 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 - Fee Related
Links
Landscapes
- Materials For Medical Uses (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、柔軟性フィルム、特に
患部への貼り付け、または患者の皮膚にものを固定する
ための絆創膏用フィルム、特に救急絆創膏用フィルムに
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible film, particularly a bandage film for sticking to an affected area or fixing something on the skin of a patient, and more particularly to a film for a first-aid bandage.
【０００２】[0002]
【従来の技術】従来、絆創膏フィルムのような柔軟性が
要求されるフィルムには、軟質ポリ塩化ビニル、ポリオ
レフィン系等のプラスチックの基材フィルムに粘着剤を
塗布したものが用いられており、特に、軟質ポリ塩化ビ
ニルフィルムが多く用いられている。しかしながら、軟
質ポリ塩化ビニルフィルムには多量の可塑剤を含むため
に、その滲み出しにより粘着力の低下が生じることか
ら、アンカーコート剤による処理が必要であった。ま
た、ポリ塩化ビニルは焼却時に有害な塩素系ガスを発生
するため、世界的に使用が制限される傾向にある。2. Description of the Related Art Conventionally, films such as adhesive plaster films which are required to have flexibility have been prepared by applying an adhesive to a base film made of a plastic such as soft polyvinyl chloride or polyolefin. , Soft polyvinyl chloride film is often used. However, since the soft polyvinyl chloride film contains a large amount of a plasticizer, the exudation of the plasticizer causes a decrease in the adhesive strength, so that treatment with an anchor coating agent is necessary. Further, since polyvinyl chloride generates harmful chlorine-based gas when incinerated, its use tends to be restricted worldwide.
【０００３】これに対して、ポリエチレンやポリプロピ
レン等のポリオレフィン系フィルム、あるいは特公平５
−２７４２４号公報に示されるオレフィン系とジエン系
のエラストマーからなるフィルムがポリ塩化ビニル代替
材料として考えられるが、柔軟性、伸びおよび応力緩和
性のバランスがとれず、ポリ塩化ビニル基材を用いた絆
創膏フィルムに比べて患部へ貼付したときの締め付け感
や違和感の問題があった。即ち、従来のオレフィン系と
ジエン系のエラストマーからなるフィルムでは、柔軟性
と応力緩和性が相反する特性となり、エラストマー比率
が増せば柔軟性は上がるが、応力緩和性は低下し、エラ
ストマー比率が下がれば応力緩和性は向上するが、柔軟
性は低下する問題があった。On the other hand, a polyolefin film such as polyethylene or polypropylene, or Japanese Patent Publication No.
Although a film composed of olefin-based and diene-based elastomers disclosed in Japanese Patent Publication No. 27424 is considered as a substitute material for polyvinyl chloride, the polyvinyl chloride base material was used because of its unbalanced flexibility, elongation and stress relaxation property. There was a problem of tightness and discomfort when applied to the affected area, as compared with the adhesive plaster film. That is, in a film made of a conventional olefin-based and diene-based elastomer, the flexibility and the stress relaxation property are contradictory to each other. If the elastomer ratio increases, the flexibility increases, but the stress relaxation property decreases and the elastomer ratio decreases. For example, the stress relaxation property is improved, but the flexibility is decreased.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記の問題
点を解決し、可塑剤移行防止のためのアンカーコート剤
の処理を必要とせず、燃焼時に有害なガスが発生せず、
適度な応力緩和性、柔軟度、強伸度を有する柔軟性フィ
ルムを提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention solves the above problems, does not require treatment of an anchor coating agent for preventing migration of plasticizer, does not generate harmful gas during combustion,
It is an object of the present invention to provide a flexible film having appropriate stress relaxation property, flexibility and strong elongation.
【０００５】[0005]
【課題を解決するための手段】本発明は、スチレン５〜
５０重量％とジエン系炭化水素９５〜５０重量％からな
る共重合体の水素添加物２５〜７５重量％、およびポリ
オレフィン７５〜２５重量％の組成からなる柔軟性フィ
ルムである。ジエン系炭化水素としては、イソプレン、
ブタジエン等があげられる。The present invention is based on styrene 5-5.
A flexible film having a composition of 25 to 75% by weight of a hydrogenated product of a copolymer of 50% by weight and 95 to 50% by weight of a diene hydrocarbon, and 75 to 25% by weight of a polyolefin. As the diene hydrocarbon, isoprene,
Butadiene, etc. may be mentioned.
【０００６】本発明の柔軟性フィルムは、構成素材中に
スチレン骨格を含むことで可塑剤を添加しなくても、柔
軟性を出しながら、かつ応力緩和性を付与することを特
徴とする。スチレンとジエン系炭化水素の共重合体の水
素添加物は、スチレン含量が５〜５０重量％で、メルト
フローレート（ＭＦＲ）がＡＳＴＭ Ｄ１２３８；２３
０℃、２．１６kgで２〜１０g/10分のものが好ましい。
スチレン含量が５％未満の場合は応力緩和性が低下、５
０％を越えた場合は柔軟性が低下する傾向がある。医療
用包帯、絆創膏フィルム、救急絆創膏用フィルムのよう
に柔軟性が特に要求されるフィルムでは、スチレンとジ
エン系炭化水素の共重合体は、柔軟性のあるランダム共
重合体が好ましい。The flexible film of the present invention is characterized by containing a styrene skeleton in the constituent material so as to provide flexibility and stress relaxation properties without adding a plasticizer. The hydrogenated product of a copolymer of styrene and a diene hydrocarbon has a styrene content of 5 to 50% by weight and a melt flow rate (MFR) of ASTM D1238; 23.
It is preferably 2 to 10 g / 10 minutes at 0 ° C. and 2.16 kg.
When the styrene content is less than 5%, the stress relaxation property decreases, 5
If it exceeds 0%, the flexibility tends to decrease. In a film particularly required to have flexibility such as a medical bandage, a bandage film, and a film for a first-aid bandage, the copolymer of styrene and a diene hydrocarbon is preferably a flexible random copolymer.
【０００７】ポリオレフィンとしては、ポリプロピレ
ン、ポリエチレン、エチレンとα−オレフィンの共重合
体である、ハイα−オレフィン樹脂、エチレンを主成分
とするポリマー連鎖間に金属イオン結合を有するアイオ
ノマー樹脂、エチレンとメチルメタクリレートの共重合
体等があげられ、ＭＦＲがＡＳＴＭ Ｄ１２３８；２３
０℃、２．１６kgで２〜６０g/10分またはＡＳＴＭ Ｄ
１２３８；１９０℃、２．１６kgで０．１〜２０g/10分
のものが好ましい。As the polyolefin, polypropylene, polyethylene, a high α-olefin resin which is a copolymer of ethylene and α-olefin, an ionomer resin having a metal ion bond between polymer chains containing ethylene as a main component, ethylene and methyl are used. Examples thereof include copolymers of methacrylate, and MFR of ASTM D1238; 23.
2-60g / 10min at 0 ℃, 2.16kg or ASTM D
1238; 190 ° C., 2.16 kg, 0.1 to 20 g / 10 minutes are preferable.
【０００８】フィルム組成のうち、スチレンとジエンの
共重合体の水素添加物が２５重量％未満、またはポリオ
レフィンが７５重量％を越える場合には、柔軟度が低下
して硬いフィルムとなり、皮膚に貼付したときの違和感
が大きくなる。一方、スチレンとジエンの共重合体の水
素添加物が７５重量％を越えるか、またはポリオレフィ
ンが２５重量％未満の場合には、応力緩和性が低下し、
貼付後、患部への締め付けが大きくなり、絆創膏用フィ
ルム基材として適さない。When the hydrogenated product of the copolymer of styrene and diene in the film composition is less than 25% by weight or the polyolefin is more than 75% by weight, the flexibility is lowered to give a hard film which is applied to the skin. The feeling of strangeness when doing is increased. On the other hand, when the hydrogenated product of the copolymer of styrene and diene exceeds 75% by weight or the content of polyolefin is less than 25% by weight, the stress relaxation property decreases,
After sticking, the tightening on the affected area becomes large, and it is not suitable as a film base material for bandages.
【０００９】本発明のフィルムは、上記のスチレンとジ
エンの共重合体の水素添加物およびポリオレフィンを溶
融混練した後、製膜することができる。製膜の方法は、
インフレ法、Ｔダイ法等公知の方法が用いられる。フィ
ルムの厚さは、要求される強伸度、柔軟度などにより適
宜選択されるが、通常３０〜２００μm 程度である。The film of the present invention can be formed into a film after melt-kneading the above hydrogenated product of a copolymer of styrene and a diene and polyolefin. The method of film formation is
Known methods such as the inflation method and the T-die method are used. The thickness of the film is appropriately selected depending on the required strength and elongation, flexibility, etc., but is usually about 30 to 200 μm.
【００１０】本発明のフィルムは、上記の組成に必要に
応じて、タルク、ステアリン酸アミド、ステアリン酸カ
ルシウム、酸化チタン等の滑剤や充填剤、あるいは酸化
防止剤、紫外線吸収剤等を適宜添加することができる。
本発明のフィルムは、縦方向の応力緩和率が３０％以
上、柔軟度が２以上で、横方向の応力緩和率が３５％以
上、柔軟度が２以上であることが好ましい。To the film of the present invention, if necessary, lubricants and fillers such as talc, stearic acid amide, calcium stearate, titanium oxide, etc., or antioxidants, ultraviolet absorbers, etc. may be appropriately added to the above composition. You can
The film of the present invention preferably has a longitudinal stress relaxation rate of 30% or more and a flexibility of 2 or more, and a lateral stress relaxation rate of 35% or more and a flexibility of 2 or more.
【００１１】本発明のフィルムは、製膜過程や製膜後に
印刷適性を向上させるためのコロナ放電処理を行った
り、あるいは通気性を向上させるための孔開け加工、更
には表面にエンポス加工等を施してもよい。また、絆創
膏に用いるときは裏面に粘着剤を塗布し、ガーゼ、剥離
紙などをフィルムに貼付したものが用いられる。以下、
実施例をあげて更に具体的に説明する。The film of the present invention is subjected to corona discharge treatment for improving printability during or after the film forming process, or perforation processing for improving air permeability, and further embossing on the surface. May be given. When used in a plaster, a backside coated with an adhesive and a film such as gauze or release paper is used. Less than,
A more specific description will be given with reference to examples.
【００１２】[0012]
実施例１〜７
スチレンとジエンのランダム共重合体の水素添加物、ポ
リオレフィン、滑剤を表１に示す割合で配合し、１８０
〜２２０℃で溶融混練した後に、２００〜２３０℃でＴ
ダイ製膜機にて厚さ９０μm のフィルムを製膜した。フ
ィルムの縦方向、横方向について各々、柔軟度、応力緩
和率、引張強度、伸び、弾性率を測定した結果を表２に
示す。Examples 1 to 7 A hydrogenated product of a random copolymer of styrene and a diene, a polyolefin, and a lubricant were mixed in the proportions shown in Table 1, and 180
After melt-kneading at ~ 220 ℃, T at 200 ~ 230 ℃
A film having a thickness of 90 μm was formed by a die film forming machine. Table 2 shows the results of measuring the flexibility, the stress relaxation rate, the tensile strength, the elongation, and the elastic modulus in the machine direction and the transverse direction of the film, respectively.
【００１３】柔軟度
初期長さ５０mm、巾１８mmの試料を引張速度２００mm/
分で引っ張ったときの、５０％モジュラスを５％モジュ
ラスで割った値である。
応力緩和率
初期長さ５０mm、巾１８mmの試料を引張速度２００mm/
分で初期試料長の５０％増の長さに引っ張ったときの、
初期応力に対する１分後に緩和した応力の割合である。
引張強度
長さ５０mm、巾１０mmの試料を引張速度３００mm/ 分で
引っ張ったときの破断応力である。
伸び
長さ５０mm、巾１０mmの試料を引張速度３００mm/ 分で
引っ張ったときの破断点伸びである。
弾性率
長さ５０mm、巾１０mmの試料を引張速度３００mm/ 分で
引っ張ったときの初期弾性率である。Flexibility An initial length of 50 mm and a width of 18 mm were applied to a sample at a pulling speed of 200 mm /
It is the value of 50% modulus divided by 5% modulus when pulled in minutes. Stress relaxation rate Initial length of 50mm, width of 18mm sample 200mm /
When pulled to 50% of the initial sample length in minutes,
It is the ratio of the stress relaxed after 1 minute to the initial stress. Tensile strength This is the breaking stress when a sample with a length of 50 mm and a width of 10 mm is pulled at a pulling rate of 300 mm / min. It is the elongation at break when a sample with an elongation length of 50 mm and a width of 10 mm is pulled at a pulling speed of 300 mm / min. Elastic modulus This is the initial elastic modulus when a sample with a length of 50 mm and a width of 10 mm is pulled at a pulling speed of 300 mm / min.
【００１４】比較例１〜５
スチレンとジエンのランダム共重合体の水素添加物、ポ
リオレフィンを表１に示す割合で配合し、１８０〜２２
０℃で溶融混練した後に、２００〜２３０℃でＴダイ製
膜機にて厚さ９０μm のフィルムを製膜した。フィルム
の縦方向、横方向について各々、実施例１〜７で測定し
たのと同様の方法で、柔軟度、応力緩和率、引張強度、
伸び、弾性率を測定した結果を表２に示す。Comparative Examples 1 to 5 A hydrogenated product of a random copolymer of styrene and a diene and a polyolefin were blended in the proportions shown in Table 1, and 180 to 22 were added.
After melt-kneading at 0 ° C., a film having a thickness of 90 μm was formed by a T-die film forming machine at 200 to 230 ° C. The flexibility, the stress relaxation rate, the tensile strength, and the longitudinal strength of the film were measured in the same manner as in Examples 1 to 7 in the longitudinal and transverse directions, respectively.
The results of measuring elongation and elastic modulus are shown in Table 2.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【表２】 [Table 2]
【００１７】実施例１〜７から明らかなように、スチレ
ンとジエンのランダム共重合体の水素添加物２５〜７５
重量％およびポリオレフィン７５〜２５重量％からなる
フィルムは、柔軟で適度な伸び、強度を示し、更に応力
緩和性についても優れている。また、比較例１〜２のよ
うにスチレンとジエンのランダム共重合体の水素添加物
が２５重量％未満または７５重量％より大きい場合、比
較例３〜５のようにスチレンとジエンのランダム共重合
体の水素添加物を用いず、オレフィン系とジエン系エラ
ストマーのフィルムの場合には、柔軟度、応力緩和性の
バランスがとれず、柔軟性フィルムとしては適さない。As is clear from Examples 1 to 7, hydrogenated products of random copolymers of styrene and diene 25 to 75
A film composed of 50% by weight and a polyolefin of 75 to 25% by weight is flexible, exhibits appropriate elongation and strength, and is also excellent in stress relaxation property. When the hydrogenated product of the random copolymer of styrene and diene is less than 25% by weight or more than 75% by weight as in Comparative Examples 1 and 2, the random copolymerization of styrene and diene as in Comparative Examples 3 and 5 is performed. In the case of an olefin-based and diene-based elastomer film that does not use a combined hydrogenated product, the flexibility and the stress relaxation property cannot be balanced, and it is not suitable as a flexible film.
【００１８】[0018]
【発明の効果】本発明のフィルムは、柔軟で、適度な伸
び、強度を有し、更に応力緩和性についても優れてお
り、燃焼時に塩素系等の有害ガスも発生しない。EFFECT OF THE INVENTION The film of the present invention is flexible, has appropriate elongation and strength, is excellent in stress relaxation property, and does not generate toxic gases such as chlorine during combustion.
フロントページの続き (72)発明者 高津 敏明 東京都千代田区九段南２丁目２番４号 ニチバン株式会社内 (56)参考文献 特開 平７−24049（ＪＰ，Ａ) 特開 平３−47884（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C08L 9/06 C08L 23/00 - 23/36 Front Page Continuation (72) Inventor Toshiaki Takatsu 2-4, 9-2 Minamidan, Chiyoda-ku, Tokyo Nichiban Co., Ltd. (56) Reference JP-A-7-24049 (JP, A) JP-A-3-47884 ( (58) Fields surveyed (Int.Cl. 7 , DB name) C08L 9/06 C08L 23 / 00-23 / 36
Claims (2)
水素９５〜５０重量％からなる共重合体の水素添加物２
５〜７５重量％、およびポリオレフィン７５〜２５重量
％の組成からなる柔軟性フィルム（ただし、不織布を除
く）。1. A hydrogenated product 2 of a copolymer comprising 5 to 50% by weight of styrene and 95 to 50% by weight of a diene hydrocarbon.
A flexible film having a composition of 5 to 75% by weight and a polyolefin of 75 to 25% by weight (excluding non-woven fabric).
度が２以上で、横方向の応力緩和率が３５％以上、柔軟
度が２以上である請求項１記載のフィルム。2. The film according to claim 1, which has a longitudinal stress relaxation rate of 30% or more and a flexibility of 2 or more, and a lateral stress relaxation rate of 35% or more and a flexibility of 2 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20737593A JP3462532B2 (en) | 1993-08-23 | 1993-08-23 | Flexible film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20737593A JP3462532B2 (en) | 1993-08-23 | 1993-08-23 | Flexible film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0762154A JPH0762154A (en) | 1995-03-07 |
| JP3462532B2 true JP3462532B2 (en) | 2003-11-05 |
Family
ID=16538689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20737593A Expired - Fee Related JP3462532B2 (en) | 1993-08-23 | 1993-08-23 | Flexible film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3462532B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6436531B1 (en) | 1998-07-20 | 2002-08-20 | 3M Innovative Properties Company | Polymer blends and tapes therefrom |
| US6869666B2 (en) | 2001-05-02 | 2005-03-22 | 3M Innovative Properties Company | Controlled-puncture films |
| JP6995461B2 (en) * | 2015-05-29 | 2022-01-14 | 株式会社クラレ | Fiber sheet with reduced winding |
| KR20220127343A (en) | 2015-05-29 | 2022-09-19 | 주식회사 쿠라레 | Fiber sheet |
-
1993
- 1993-08-23 JP JP20737593A patent/JP3462532B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0762154A (en) | 1995-03-07 |
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