JPH0661864B2 - Breathable foam sheet and method for producing the same - Google Patents
Breathable foam sheet and method for producing the sameInfo
- Publication number
- JPH0661864B2 JPH0661864B2 JP1125503A JP12550389A JPH0661864B2 JP H0661864 B2 JPH0661864 B2 JP H0661864B2 JP 1125503 A JP1125503 A JP 1125503A JP 12550389 A JP12550389 A JP 12550389A JP H0661864 B2 JPH0661864 B2 JP H0661864B2
- Authority
- JP
- Japan
- Prior art keywords
- moisture
- resin
- sheet
- permeable
- foam sheet
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は包装材、被服、医療用素材等種々の分野に使用
される透湿性発泡シート及びその製造方法に関する。TECHNICAL FIELD The present invention relates to a moisture-permeable foam sheet used in various fields such as packaging materials, clothing, and medical materials, and a method for producing the same.
一般に合成樹脂シートとしては、ポリ塩化ビニルシート
等の軟質合成樹脂シートが広く用いられている。また発
泡ポリエチレン樹脂等の発泡軟質合成樹脂シートは包装
材料等として広く用いられている。Generally, a soft synthetic resin sheet such as a polyvinyl chloride sheet is widely used as the synthetic resin sheet. Foamed soft synthetic resin sheets such as foamed polyethylene resin are widely used as packaging materials and the like.
更に水蒸気は透過するが、液状の水は透過しない程度の
微細孔を多数設けた合成樹脂製の微孔性フイルムが知ら
れ、この種微孔性フイルムは合成樹脂溶液を展延後に溶
剤を水と置換させる湿式法或いは物理的、機械的に微孔
を穿ける乾式法により製造されている。Further, a microporous film made of synthetic resin is known, which is provided with a large number of micropores that allow water vapor to pass through but not liquid water to permeate. It is manufactured by a wet method of substituting with or a dry method of physically and mechanically forming fine holes.
また塩化ビニル樹脂中に高給水性樹脂よりなる高分子吸
湿剤を添加してシート状に成形し、そのシート状塩化ビ
ニル樹脂層中に高分子吸湿剤微粉末を分散して埋設する
ことにより、塩化ビニル樹脂シートに吸湿性を付与しよ
うとする試みもなされている。Further, by adding a polymer hygroscopic agent consisting of a highly water-repellent resin in vinyl chloride resin to form a sheet, and by embedding by dispersing the polymer hygroscopic agent fine powder in the sheet-shaped vinyl chloride resin layer, Attempts have also been made to impart hygroscopicity to vinyl chloride resin sheets.
上記従来の合成樹脂シートのうち、ポリ塩化ビニルシー
ト等の軟質合成樹脂シートはシート表面が汚れにくく、
汚れても払拭し易いが、透湿性がないため、蒸れや結露
が起こり易く、又用途によっては、その表面の艶、手触
り等の風合いは充分満足すべきものではない。Of the above-mentioned conventional synthetic resin sheets, soft synthetic resin sheets such as polyvinyl chloride sheets are less likely to stain the sheet surface,
Although it is easily wiped off even if it becomes dirty, it does not have moisture permeability, so that it is apt to cause stuffiness or dew condensation, and depending on the application, the texture of the surface such as gloss and touch is not sufficiently satisfactory.
発泡ポリエチレンシート等の発泡軟質合成樹脂シート
は、断熱性による結露の防止や、若干の手触りの改善は
認められるものの、透湿性に乏しく、蒸れ防止の効果は
ない。A foamed soft synthetic resin sheet such as a foamed polyethylene sheet has a low moisture permeability and does not have an effect of preventing stuffiness, although it is confirmed that dew condensation is prevented by heat insulation and a slight improvement in touch is recognized.
また微細孔を多数設けた合成樹脂シートは透湿性はある
ものの、単に微細孔を設けただけでは、シートの風合い
は改善されず、表面の微細孔により汚れが着きやすく、
汚れを払拭しがたいと言う欠点があり、その製造工程も
複雑である。Further, although the synthetic resin sheet provided with a large number of fine pores has moisture permeability, the texture of the sheet is not improved by simply providing fine pores, and the surface fine pores easily cause stains.
It has the drawback that it is difficult to wipe off dirt, and its manufacturing process is complicated.
更に高分子吸湿剤を分散埋設した塩化ビニル樹脂シート
では、シート表面に露出した吸湿剤はよく吸湿するが、
樹脂層内部に埋没している吸湿剤は透湿性のない塩化ビ
ニル樹脂で被覆されているため、吸湿能力が著しく阻害
され、また一旦これに吸収された水分は同様の理由によ
り、放散され難く、充分な吸放湿性を期待することはで
きない。Further, in a vinyl chloride resin sheet in which a polymeric hygroscopic agent is dispersed and embedded, the hygroscopic agent exposed on the sheet surface absorbs moisture well,
Since the hygroscopic agent buried in the resin layer is covered with a vinyl chloride resin having no moisture permeability, the hygroscopic ability is significantly impaired, and the water once absorbed is difficult to be released due to the same reason, Sufficient moisture absorption and desorption cannot be expected.
従って、本発明は透湿性に及び防汚性にすぐれ、しかも
風合のよい透湿性シートとその簡単な製造方法を提供す
ることを目的とする。Therefore, an object of the present invention is to provide a moisture-permeable sheet having excellent moisture permeability and antifouling property, and having a good feeling, and a simple manufacturing method thereof.
上記目的を達成すべく、本発明者らは鋭意研究を重ねた
結果、透湿性ポリウレタン樹脂等の透湿性合成樹脂を発
泡させた発泡体層よりなるシートは透湿性に優れ、風合
いや手触りが温かく、表面が平滑で防汚性に優れること
を見出し、またその樹脂層中に吸湿剤を分散埋設するこ
とにより、大気中の湿気は、比較的薄い透湿性の樹脂層
を通して単時間に発泡体内部の吸湿剤に到達して吸収さ
れ、また逆に放散されるので、吸放湿性に優れ、ること
を見出し、更にこの発泡体層は気化性液体を封入したマ
イクロカプセルを配合した透湿性樹脂を基材表面に塗布
した後、加熱発泡せしめることにより、極めて容易に形
成しうることを見出し、本発明を完成するに至った。In order to achieve the above object, the inventors of the present invention have conducted extensive studies, and as a result, a sheet made of a foam layer obtained by foaming a moisture-permeable synthetic resin such as a moisture-permeable polyurethane resin has excellent moisture permeability, and the texture and the feel are warm. It has been found that the surface is smooth and has excellent antifouling properties, and by embedding a hygroscopic agent in the resin layer, moisture in the atmosphere can pass through the relatively thin moisture permeable resin layer for a single time inside the foam. It is found that it has excellent moisture absorption and desorption properties because it reaches and is absorbed by the hygroscopic agent of the above, and is also released on the contrary, and this foam layer is made of a moisture permeable resin containing microcapsules encapsulating a vaporizable liquid. The present invention has been completed by finding that it can be formed extremely easily by applying heat-foaming after coating on the surface of a substrate.
即ち、本発明は実質的に独立気泡からなる透湿性樹脂発
泡体層よりなることを特徴とする透湿性発泡シートを要
旨とする。That is, the gist of the present invention is a moisture-permeable foam sheet characterized by comprising a moisture-permeable resin foam layer substantially composed of closed cells.
更に本発明は気化性液体を熱可塑性樹脂で包埋してなる
熱膨張性マイクロカプセルと透湿性を有する樹脂を均一
に混合し、得られたコンパウンドを基材の表面に塗布
し、加熱発泡させた後、得られた発泡シートを基材より
剥離する透湿性発泡シートの製造方法を要旨とする。Furthermore, the present invention uniformly mixes a thermally expansive microcapsule obtained by embedding a vaporizable liquid with a thermoplastic resin and a resin having moisture permeability, and applying the obtained compound to the surface of a base material to heat-foam it. After that, the gist is a method for producing a moisture-permeable foam sheet, in which the obtained foam sheet is peeled from the base material.
本発明に用いられる透湿性樹脂としては、溶剤に可溶
で、水により膨潤し難く、フイルム形成能を有する透湿
性樹脂であれば、特に制限はないが、例えばビニルアル
コール系樹脂、酢酸ビニル系樹脂、アクリル系樹脂、ウ
レタン系樹脂、アミノ酸系樹脂などであって、ＪＩＳ
Ｚ−０２０８ Ｂ法により測定したフイルム（膜厚１０
μ）の透湿率が１０００ｇ／m2・２４Ｈ以上であるもの
が好適である。これらの樹脂は通常有機溶媒に溶解し
て、或いはエマルジョンの形で用いられるが、この場
合、溶液中の固形分は１０〜５０重量％、溶液粘度は１
００〜７０００CPSになるように調節される。ついで、
この溶液に熱膨張性マクロカプセルおよび必要に応じ
て、吸湿剤その他の添加剤を適宜配合し、均一に混合し
てコンパウンドを調製する。The moisture-permeable resin used in the present invention is not particularly limited as long as it is a moisture-permeable resin that is soluble in a solvent, is difficult to swell with water, and has a film-forming ability. For example, vinyl alcohol-based resin, vinyl acetate-based resin Resin, acrylic resin, urethane resin, amino acid resin, etc.
Film measured by Z-0208 B method (film thickness 10
It is preferable that the water vapor permeability (μ) is 1000 g / m 2 · 24H or more. These resins are usually dissolved in an organic solvent or used in the form of an emulsion. In this case, the solid content in the solution is 10 to 50% by weight and the solution viscosity is 1
It is adjusted to be 00-7000 CPS. Then,
A thermally expandable macrocapsule and, if necessary, a hygroscopic agent and other additives are appropriately blended with this solution and uniformly mixed to prepare a compound.
本発明に用いられる熱膨張性マイクロカプセルは気化性
液体を熱可塑性樹脂膜で包埋した微小球であって、適度
の温度に加熱すると、中に包埋された液体が気化し、そ
の圧力でカプセル全体が膨張し、体積の拡大した気泡体
を与える（以下発泡と略記する）。該マイクロカプセル
を構成する熱可塑性樹脂としては、５０〜２００℃の軟
化点を有するものが好ましく、この種の樹脂としては、
ポリ塩化ビニル、ポリ塩化ビニリデン、ポリアクリロニ
トリル、ポリメチルアクリレート、ポリメチルメタクリ
レート、ポリビニルアセテートなどのホモポリマーまた
はこれらのコポリマーおよびこれらの混合物等を例示す
ることができる。The heat-expandable microcapsules used in the present invention are microspheres in which a vaporizable liquid is embedded in a thermoplastic resin film, and when heated to an appropriate temperature, the liquid embedded therein is vaporized, and at that pressure. The entire capsule expands to give a foam having an expanded volume (hereinafter abbreviated as foaming). As the thermoplastic resin forming the microcapsules, those having a softening point of 50 to 200 ° C. are preferable, and as this type of resin,
Examples thereof include homopolymers such as polyvinyl chloride, polyvinylidene chloride, polyacrylonitrile, polymethyl acrylate, polymethyl methacrylate, polyvinyl acetate, copolymers thereof, and mixtures thereof.
包埋する気化性液体としては、容易にマイクロカプセル
化し易く、安価な低級炭化水素、例えば液体ブタンなど
が適当である。発泡前のマイクロカプセルの粒径は５〜
３０μであり、これを５０〜２００℃で数分間加熱した
ときに数倍ないし数十倍に発泡する性質を有する。As the vaporizable liquid to be embedded, an inexpensive lower hydrocarbon, such as liquid butane, which is easily microencapsulated and is inexpensive, is suitable. The particle size of the microcapsules before foaming is 5
It is 30 μm and has a property of foaming several times to several tens of times when heated at 50 to 200 ° C. for several minutes.
上記の熱膨張性マイクロカプセルと透湿性樹脂の混合割
合は溶液中の樹脂固形分１００重量部当り、マイクロカ
プセル0.1〜５００重量部、好ましくは0.5〜２００重量
部の範囲である。0.1重量部以下では発泡後、ソフト感
に欠け、５００重量部以上では透湿性樹脂発泡体層の強
度が弱く、且つ透湿性も損なわれて好ましくない。この
マイクロカプセルの混合に際しては、例えばディゾルバ
ー、ホモディスパー、ペイントロールなど適当な方法を
用い、均一に混合分散させることが肝要である。The mixing ratio of the heat-expandable microcapsules and the moisture-permeable resin is in the range of 0.1 to 500 parts by weight, preferably 0.5 to 200 parts by weight, per 100 parts by weight of the resin solid content in the solution. If the amount is 0.1 parts by weight or less, the soft feeling after foaming is lacking, and if it is 500 parts by weight or more, the strength of the moisture-permeable resin foam layer is weak and the moisture permeability is also impaired, which is not preferable. When mixing the microcapsules, it is important to uniformly mix and disperse them by using an appropriate method such as a dissolver, a homodisper or a paint roll.
本発明において用いられる吸湿性としては、公知の高分
子吸湿剤または無機吸湿剤であって、環境に応じて吸放
湿性能を発揮しうるものであれば、いずれも使用可能で
あり、それらを各々単独あるいは混合して使用する。As the hygroscopic property used in the present invention, any known polymer hygroscopic agent or inorganic hygroscopic agent can be used as long as it can exhibit moisture absorption and desorption performance depending on the environment. Use them individually or as a mixture.
好ましい高分子吸湿剤としては、公知の高吸水性樹脂が
用いられ、例えばポリアクリル酸塩類、カルボキシメチ
ルセルロース、イソブチレン−マレイン酸共重合体、澱
粉−アクリル酸グラフト重合体、酢酸ビニル−アクリル
酸エステル共重合体けん化物、酢酸ビニル−不飽和ジカ
ルボン酸系共重合体けん化物、ポリエチレンオキシド系
吸湿剤等を例示することができ、またパルプ、皮革等の
吸湿性有機天然物の粉末を吸湿剤として用いることもで
きる。As the preferred polymer hygroscopic agent, a known super absorbent polymer is used, and examples thereof include polyacrylic acid salts, carboxymethyl cellulose, isobutylene-maleic acid copolymer, starch-acrylic acid graft polymer, vinyl acetate-acrylic acid ester copolymer. Polymer saponification products, vinyl acetate-unsaturated dicarboxylic acid copolymer saponification products, polyethylene oxide-based hygroscopic agents, and the like can be exemplified, and powders of hygroscopic organic natural products such as pulp and leather are used as hygroscopic agents. You can also
これらの高分子吸湿剤の乾燥時の粒径は通常２０μ以下
であり、できる限り細かい方が吸放湿性能が良好とな
り、好ましい。またこれらの高分子吸湿剤は吸水倍率が
２〜２００倍の性能を有する範囲のものが好ましく、特
に吸水率５〜１００倍のものが好ましい。The particle size of these polymeric hygroscopic agents when dried is usually 20 μm or less, and it is preferable that the particle size is as small as possible because the moisture absorbing / releasing performance is good. Further, these polymeric hygroscopic agents preferably have a water absorption capacity of 2 to 200 times, and particularly preferably a water absorption rate of 5 to 100 times.
また無機吸湿剤としては、ベントナイト、シリカゲル、
セピオライト、焼成タルク、ゼオライト、その他各種の
無機塩類および吸着性能を有する天然石粉等が用いられ
るが、これらもできる限り粒径の小さい方が表面積が大
きく、吸放湿性能が良好であって好ましい。Further, as the inorganic moisture absorbent, bentonite, silica gel,
Sepiolite, calcined talc, zeolite, various other inorganic salts, and natural stone powder having an adsorbing property are used, and it is also preferable that the particle size is as small as possible because the surface area is large and the moisture absorbing / releasing property is good.
これらの吸湿剤の添加量は溶液中の樹脂固形分１００重
量部当り、通常１０〜３００重量部の範囲が好ましい。The amount of these hygroscopic agents added is usually preferably in the range of 10 to 300 parts by weight per 100 parts by weight of the resin solid content in the solution.
この発明を実施するに当たっては、上記の配合剤の他
に、各種の顔料、耐候剤、脱臭剤、芳香剤、防黴剤など
を必要に応じて適宜添加することができる。In carrying out the present invention, various pigments, weathering agents, deodorants, fragrances, mildew-proofing agents and the like can be appropriately added, in addition to the above-mentioned compounding agents.
以上のごとく各種配合剤成分を混合し、調製したコンパ
ウンドを離型紙等の基材に塗布する方法としては、グラ
ビアコーティング、ドクターブレードコーティング、リ
バースロールコーティングなどの公知のコーティング法
を適宜採用しうる。また熱可塑性のある樹脂は溶剤なし
でエクストルージョンコーティング等の方法も採用する
ことができる。As a method of mixing various compounding agent components as described above and applying the prepared compound to a substrate such as release paper, a known coating method such as gravure coating, doctor blade coating, reverse roll coating and the like can be appropriately adopted. Further, for the thermoplastic resin, a method such as extrusion coating can be adopted without using a solvent.
離型紙等の基材の上に前記コンパウンドを５〜１００μ
の一定の厚みに連続的に塗布し、所定温度に加熱する
と、マイクロカプセルが膨張、発泡して、膜厚１０〜１
０００μの透湿性樹脂発泡体層が形成される。5-100 μ of the compound on a base material such as release paper
When it is continuously applied to a certain thickness and heated to a predetermined temperature, the microcapsules expand and foam to a film thickness of 10 to 1
A 000μ moisture-permeable resin foam layer is formed.
発泡時の加熱温度は、使用するマイクロカプセルの材質
によって適宜選択されるものであるが、通常５０〜２０
０℃が用いられ、この温度で数分間（例えば１２０℃で
１分間）加熱すれば、溶剤が飛散すると同時に発泡が起
こり、ついで冷却した後、基材からシートを剥離させて
巻き取る。また溶剤を蒸発させる工程と発泡工程を分離
し、２段階で成形することもできる。発泡はフリー発泡
でもよいが、上部から離型紙を介して適当な方法で押圧
し、発泡厚みを制御することも可能である。The heating temperature at the time of foaming is appropriately selected depending on the material of the microcapsules used, but is usually 50 to 20.
0 ° C. is used, and if heated at this temperature for several minutes (for example, 120 ° C. for 1 minute), the solvent is scattered and foaming occurs at the same time, and after cooling, the sheet is peeled from the base material and wound up. It is also possible to separate the step of evaporating the solvent and the foaming step and perform the molding in two steps. The foaming may be free foaming, but it is also possible to control the foaming thickness by pressing from above with a release paper by an appropriate method.
また、表面の化粧法としては、成形後コーティング面に
エンボス加工したり、各種の色彩、模様を印刷するなど
種々の方法を採用しうる。As the surface makeup method, various methods such as embossing the coated surface after printing, printing various colors and patterns, and the like can be adopted.
本発明のシートは透湿性ウレタン樹脂発泡体層よりなる
透湿性発泡シートであり、更に発泡体中に吸放湿性の吸
湿剤を添加することにより、シートに吸放湿性を付与す
ることができる。The sheet of the present invention is a moisture-permeable foam sheet composed of a moisture-permeable urethane resin foam layer, and a moisture-absorbing / releasing agent can be added to the sheet to further impart moisture-absorbing / releasing ability to the sheet.
かかる構造のシートは優れた透湿性を持つので、包装材
や被服等として用いたとき、湿性が籠もったり、蒸れた
りせず、また樹脂層が発泡体よりなるため、断熱効果を
有し、風合い、手触りがソフトで温い。またその発泡体
が実質的に独立気泡よりなり、その表面は無孔性であっ
て、汚れが付着しても目詰まりがなく、乾布や水拭きに
より、容易に汚れを払拭することができるので、長く美
観を保つことができると共に透湿性が低下しない。更に
シートが吸湿性を有するので、静電防止効果もある。Since the sheet having such a structure has excellent moisture permeability, when used as a packaging material, clothing, etc., it has a moistness and does not get damp, and since the resin layer is a foam, it has a heat insulating effect, The texture and feel are soft and warm. Further, since the foam body is substantially composed of closed cells, the surface thereof is non-porous, does not clog even if dirt adheres, and the dirt can be easily wiped off with a dry cloth or water wipe. , The appearance can be maintained for a long time and the moisture permeability does not deteriorate. Further, since the sheet has hygroscopicity, it also has an antistatic effect.
本発明のシートは食品の包装、服、スポーツウエア等の
裏地、ハンドルカバー、ラケットやゴルフクラブ等のグ
リップテープ、鞄の取手等の防汚、汗かき防止用のテー
プ等のテープ類、靴の内張り、プラスター基材、パップ
基材、経皮薬テープ基材等の医療用素材、手袋、おむつ
カバーや生理用品、老人用防汚シート等多岐に亙る用途
に適用しうる。The sheet of the present invention is used for food packaging, clothes, linings for sportswear and the like, handle covers, grip tapes for rackets and golf clubs, antifouling tapes for bags and the like, tapes for preventing sweating, shoes, etc. It can be applied to a wide variety of uses such as liners, plaster bases, pap bases, transdermal drug tape bases and other medical materials, gloves, diaper covers and sanitary products, and antifouling sheets for the elderly.
実施例１ 透湿性ウレタン樹脂（東洋ゴム工業株式会社製：ＮＹ８
１４）の溶液から製膜した厚さ２０μのフィルムを作成
し、その透湿度を測定すると、４３００ｇ／m2・２４Ｈ
であった。ついでこの溶液にその固形分１００重量部当
り熱膨張性マイクロカプセル（商品名、マイクロスフェ
アーＦ−３０：松本油脂製薬株式会社製）５０重量部の
割合で添加し、ペイントロールを用いて均一に混合し
て、コンパウンドを調製した。このコンパウンドをグラ
ビヤコーティング法により、離型紙上に均一に塗布し、
加熱炉中で１２０℃に１分間加熱し、冷却後、離型紙か
ら剥離することにより、実質的に独立気泡からなる透湿
性ウレタン樹脂発泡体層よりなる１００μ厚のシートを
得た。Example 1 Breathable urethane resin (manufactured by Toyo Tire & Rubber Co., Ltd .: NY8)
A film with a thickness of 20μ formed from the solution of 14) was prepared, and the moisture permeability was measured to be 4300 g / m 2 · 24H.
Met. Then, 50 parts by weight of heat-expandable microcapsules (trade name, Microsphere F-30: manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.) were added to this solution at a solid content of 100 parts by weight, and uniformly added using a paint roll. A compound was prepared by mixing. This compound is uniformly coated on the release paper by the gravure coating method,
After heating at 120 ° C. for 1 minute in a heating furnace, cooling, and peeling from the release paper, a 100 μ-thick sheet made of a moisture-permeable urethane resin foam layer consisting of substantially closed cells was obtained.
第１図は上記の方法により得られた透湿性発泡シートの
構成を示す断面図である。図面において、(1)は透湿性
樹脂発泡体層、(2)は熱膨張性マイクロカプセルの加熱
により形成された独立気泡、(3)はウレタン重合体より
なる透湿性樹脂である。FIG. 1 is a cross-sectional view showing the structure of a moisture-permeable foam sheet obtained by the above method. In the drawings, (1) is a moisture-permeable resin foam layer, (2) is a closed cell formed by heating a heat-expandable microcapsule, and (3) is a moisture-permeable resin made of a urethane polymer.
上記のシートを用いて絆創膏を製作し、市販のポリ塩化
ビニルシートを基材とする絆創膏と比較試験した。両者
の絆創膏のサンプルを人体の手の指部の皮膚に貼着して
１日間放置したところ、市販の絆創膏は皮膚の蒸れが甚
だしかったが、本発明の透湿性シートを用いた絆創膏で
は蒸れが認められなかった。An adhesive plaster was produced using the above-mentioned sheet, and a comparative test was conducted with an adhesive plaster based on a commercially available polyvinyl chloride sheet. When a sample of both bandages was applied to the skin of the finger part of the human body and left for 1 day, the commercially available bandages showed severe stuffy skin, but the bandages using the moisture-permeable sheet of the present invention made them stuffy. Was not recognized.
実施例２ 実施例１と同様のシートを用いて手袋を製作し、炊事の
ために１時間着用して、市販のポリエチレン製の手袋と
比較したところ、ポリエチレン製の手袋は蒸れたり、汗
をかいたりしたが、本発明のシートを用いた手袋は蒸れ
たり、汗をかいたりせず、手触りも良好であった。Example 2 A glove was manufactured using the same sheet as in Example 1, and was worn for one hour for cooking, and compared with a commercially available polyethylene glove, the glove made of polyethylene was damp and sweated. However, the gloves using the sheet of the present invention did not get stuffy or sweat and had a good feel to the touch.
従来のポリ塩化ビニルシート等では透湿性がなく、蒸れ
や結露が生じ易く、また表面の艶、手触り等の風合いが
好ましくないと言う欠点があったが、本発明の透湿性発
泡シートは透湿性に優れ、ソフトで、温かい手触りや風
合いを持ち、防汚性に優れ、透湿性、防汚性、吸放湿性
を必要とする多岐の用途に適用可能である。Conventional polyvinyl chloride sheets, etc. have the drawbacks of not having moisture permeability, easily causing stuffiness and dew condensation, and having unfavorable textures such as surface gloss and touch, but the moisture-permeable foam sheet of the present invention has moisture permeability. It is excellent in softness, has a warm touch and texture, has excellent antifouling properties, and can be applied to a wide variety of applications that require moisture permeability, antifouling properties, and moisture absorption / desorption properties.
またその製造工程は簡単で、特殊な装置を必要とせず、
極めて安価に製造することができる。In addition, the manufacturing process is simple, no special equipment is required,
It can be manufactured at extremely low cost.
第１図は本発明の透湿性発泡シートの一実施例の断面図
である。 (1)……透湿性樹脂発泡体層、 (2)……独立気泡、 (3)……透湿性樹脂。FIG. 1 is a sectional view of an embodiment of the moisture-permeable foam sheet of the present invention. (1) …… Moisture permeable resin foam layer, (2) …… Closed cells, (3) …… Moisture permeable resin.
Claims (3)
体層よりなることを特徴とする透湿性発泡シート。1. A moisture-permeable foam sheet comprising a moisture-permeable resin foam layer substantially composed of closed cells.
熱膨張性マイクロカプセルと透湿性を有する樹脂を均一
に混合し、得られたコンパウンドを基材の表面に塗布
し、加熱発泡させた後、得られた発泡シートを基材より
剥離する透湿性発泡シートの製造方法。2. A heat-expandable microcapsule obtained by embedding a vaporizable liquid in a thermoplastic resin and a resin having moisture permeability are uniformly mixed, and the resulting compound is applied to the surface of a base material and heated and foamed. After that, the method for producing a moisture-permeable foam sheet, in which the obtained foam sheet is peeled from the base material.
熱膨張性マイクロカプセルと透湿性を有する樹脂及び吸
湿剤を均一に混合し、得られたコンパウンドを基材の表
面に塗布し、加熱発泡させた後、得られた発泡シートを
基材より剥離する透湿性発泡シートの製造方法。3. A heat-expandable microcapsule obtained by embedding a vaporizable liquid in a thermoplastic resin, a resin having moisture permeability and a hygroscopic agent are uniformly mixed, and the obtained compound is applied to the surface of a base material. A method for producing a moisture-permeable foam sheet, which comprises heat-foaming and then peeling the obtained foam sheet from a substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1125503A JPH0661864B2 (en) | 1989-05-17 | 1989-05-17 | Breathable foam sheet and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1125503A JPH0661864B2 (en) | 1989-05-17 | 1989-05-17 | Breathable foam sheet and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02303818A JPH02303818A (en) | 1990-12-17 |
| JPH0661864B2 true JPH0661864B2 (en) | 1994-08-17 |
Family
ID=14911730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1125503A Expired - Lifetime JPH0661864B2 (en) | 1989-05-17 | 1989-05-17 | Breathable foam sheet and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0661864B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7285576B2 (en) * | 2003-03-12 | 2007-10-23 | 3M Innovative Properties Co. | Absorbent polymer compositions, medical articles, and methods |
| JP4832821B2 (en) * | 2005-07-19 | 2011-12-07 | セーレン株式会社 | Moisture permeable waterproof windproof film having heat retention and breathability, and composite material obtained by laminating this on fabric |
| US20070166399A1 (en) | 2006-01-13 | 2007-07-19 | 3M Innovative Properties Company | Silver-containing antimicrobial articles and methods of manufacture |
| CN106275545B (en) * | 2016-08-11 | 2018-11-02 | 陈朱亨 | A kind of product shoes multifunctional packaging processing unit |
-
1989
- 1989-05-17 JP JP1125503A patent/JPH0661864B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02303818A (en) | 1990-12-17 |
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