JPH0291278A - Production of synthetic leather - Google Patents
Production of synthetic leatherInfo
- Publication number
- JPH0291278A JPH0291278A JP24568788A JP24568788A JPH0291278A JP H0291278 A JPH0291278 A JP H0291278A JP 24568788 A JP24568788 A JP 24568788A JP 24568788 A JP24568788 A JP 24568788A JP H0291278 A JPH0291278 A JP H0291278A
- Authority
- JP
- Japan
- Prior art keywords
- polymer substance
- water
- polyurethane resin
- synthetic leather
- natural polymer
- 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
- 239000002649 leather substitute Substances 0.000 title claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 62
- 239000000126 substance Substances 0.000 claims abstract description 57
- 102000004190 Enzymes Human genes 0.000 claims abstract description 20
- 108090000790 Enzymes Proteins 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 229920005615 natural polymer Polymers 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 26
- 230000000593 degrading effect Effects 0.000 claims description 14
- 238000009981 jet dyeing Methods 0.000 claims description 13
- 229920002635 polyurethane Polymers 0.000 claims description 13
- 239000004814 polyurethane Substances 0.000 claims description 13
- 239000002904 solvent Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 2
- 230000035699 permeability Effects 0.000 abstract description 30
- 239000010985 leather Substances 0.000 abstract description 19
- 239000003292 glue Substances 0.000 abstract description 9
- 229920000728 polyester Polymers 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 229920000642 polymer Polymers 0.000 abstract description 7
- 229920002472 Starch Polymers 0.000 abstract description 5
- 235000019698 starch Nutrition 0.000 abstract description 4
- 239000004677 Nylon Substances 0.000 abstract description 3
- 229920001778 nylon Polymers 0.000 abstract description 3
- 239000008107 starch Substances 0.000 abstract description 3
- 229920000742 Cotton Polymers 0.000 abstract description 2
- 108010010803 Gelatin Proteins 0.000 abstract description 2
- 229920000159 gelatin Polymers 0.000 abstract description 2
- 239000008273 gelatin Substances 0.000 abstract description 2
- 235000019322 gelatine Nutrition 0.000 abstract description 2
- 235000011852 gelatine desserts Nutrition 0.000 abstract description 2
- 230000003301 hydrolyzing effect Effects 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 62
- 210000003491 skin Anatomy 0.000 description 23
- 239000005018 casein Substances 0.000 description 11
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 11
- 235000021240 caseins Nutrition 0.000 description 11
- 229920001592 potato starch Polymers 0.000 description 11
- 210000002615 epidermis Anatomy 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 108091005804 Peptidases Proteins 0.000 description 4
- 239000004365 Protease Substances 0.000 description 4
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 239000002335 surface treatment layer Substances 0.000 description 4
- 239000004382 Amylase Substances 0.000 description 3
- 102000013142 Amylases Human genes 0.000 description 3
- 108010065511 Amylases Proteins 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 235000019418 amylase Nutrition 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 241000193830 Bacillus <bacterium> Species 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001610 polycaprolactone Polymers 0.000 description 2
- 239000004632 polycaprolactone Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 235000018102 proteins Nutrition 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 241000228212 Aspergillus Species 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 102000008186 Collagen Human genes 0.000 description 1
- 108010035532 Collagen Proteins 0.000 description 1
- 229920002261 Corn starch Polymers 0.000 description 1
- 101100145155 Escherichia phage lambda cIII gene Proteins 0.000 description 1
- 229920001407 Modal (textile) Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 102000005158 Subtilisins Human genes 0.000 description 1
- 108010056079 Subtilisins Proteins 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 229920001436 collagen Polymers 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 229940099112 cornstarch Drugs 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229940100445 wheat starch Drugs 0.000 description 1
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、合成皮革及の製造方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to synthetic leather and a method for producing the same.
近年、天然皮革にかわって織布、不織布等の基材にポリ
ウレタン等の合成樹脂弾性体を積層して形成した人工皮
革、合成皮革が広く利用されるようになっているが、こ
れら人工皮革、合成皮革の外観、風合、感触をより天然
皮革に近いものとするために種々の改良が加えられてい
る。In recent years, instead of natural leather, artificial leather and synthetic leather, which are formed by laminating a synthetic resin elastic body such as polyurethane on a base material such as woven fabric or non-woven fabric, have become widely used. Various improvements have been made to make the appearance, texture, and feel of synthetic leather more similar to natural leather.
人工皮革、合成皮革の風合、舷窓等を天然皮革に近づけ
るための方法として、合成樹脂中に天然皮革粉末を添加
する方法が提案されており、例えば50〜250メツシ
ユ(約300〜60μ)の天然皮革粉末を、該皮革粉末
に対して重量比で70〜30重量%の熱可塑性樹脂コン
パウンドに添加し、更にこれに発泡剤を添加してこれら
を混合した後、加熱圧延して発泡シートとした人工皮革
(特開昭63−10641号公報)等が知られている。A method of adding natural leather powder to synthetic resin has been proposed as a method to bring the texture, portholes, etc. of artificial leather and synthetic leather closer to those of natural leather. Natural leather powder is added to a thermoplastic resin compound in a weight ratio of 70 to 30% based on the leather powder, and a blowing agent is further added to this and mixed, followed by heat rolling to form a foamed sheet. Artificial leather (Japanese Unexamined Patent Publication No. 10641/1983) and the like are known.
しかしながら上記特開昭63−10641号公報に記載
された人工皮革は加熱圧延して発泡してシート状に形成
しているため、表皮部分に所謂スキン層が形成され、こ
のスキン層によって天然皮革粉末を添加したことにより
得られる天然皮革様の触感が阻害されるとともに、透湿
性、通気性にも劣ったものとなる。このためスキン層部
分をスライスして除去する必要があり、製造作業が煩雑
になるとともに、樹脂中に天然皮革粉末を添加して発泡
しているために、天然皮革粉末が人工皮革全体に分散し
ており、このため天然皮革粉末を多量に添加しないと表
面感触の充分な向上が得られず、また天然皮革粉末を多
量に添加すると、表面感触の向上は得られるものの皮革
全体の強度が低下して実用に耐え得ないものとなるとい
う相矛盾する欠点があった。However, since the artificial leather described in JP-A No. 63-10641 is heat-rolled and foamed to form a sheet, a so-called skin layer is formed on the epidermis, and this skin layer allows natural leather powder to be The addition of this material impairs the natural leather-like feel, and also results in poor moisture permeability and air permeability. For this reason, it is necessary to slice and remove the skin layer, which complicates the manufacturing process, and because natural leather powder is added to the resin and foamed, the natural leather powder is dispersed throughout the artificial leather. Therefore, unless a large amount of natural leather powder is added, the surface feel cannot be sufficiently improved, and if a large amount of natural leather powder is added, although the surface feel can be improved, the strength of the entire leather decreases. However, it had contradictory drawbacks, such as making it impractical for practical use.
本発明は上記の従来技術の欠点を解決し、外観、風合、
感触等に優れるとともに透湿性、通気性等の物性にも優
れた合成皮革の製造方法を提供することを目的とする。The present invention solves the above-mentioned drawbacks of the prior art, improves appearance, texture,
The purpose of the present invention is to provide a method for producing synthetic leather that has excellent feel and physical properties such as moisture permeability and air permeability.
即ち本発明は、
(1) 基材の少なくとも片面に水溶性天然高分子物
質を含有するポリウレタン樹脂層を形成した後、該積層
体を上記水溶性天然高分子物質の分解酵素を含む温水中
に浸漬して水溶性天然高分子物質を溶解除去して多孔性
の表皮層を形成することを特徴とする合成皮革の製造方
法。That is, the present invention provides the following steps: (1) After forming a polyurethane resin layer containing a water-soluble natural polymer substance on at least one side of a base material, the laminate is placed in hot water containing an enzyme that decomposes the water-soluble natural polymer substance. A method for producing synthetic leather, which comprises soaking to dissolve and remove a water-soluble natural polymer substance to form a porous skin layer.
(2)基材の少なくとも片面にポリウレタン樹脂の親水
性有機溶媒溶液を塗布した後、水中に浸漬して溶媒を除
去するとともにポリウレタンを凝固させてポリウレタン
樹脂の微多孔層を形成し、次いでその表面に水溶性天然
高分子物質を含有するポリウレタン樹脂層を形成した後
、該積層体を上記水溶性天然高分子物質の分解酵素を含
む温水中に浸漬して水溶性天然高分子物質を溶解除去し
て多孔性の表皮層を形成することを特徴とする合成皮革
の製造方法。(2) After coating a hydrophilic organic solvent solution of polyurethane resin on at least one side of the substrate, immerse it in water to remove the solvent and coagulate the polyurethane to form a microporous layer of polyurethane resin, and then form a microporous layer of polyurethane resin on the surface. After forming a polyurethane resin layer containing a water-soluble natural polymer substance, the laminate is immersed in hot water containing a degrading enzyme for the water-soluble natural polymer substance to dissolve and remove the water-soluble natural polymer substance. A method for producing synthetic leather, characterized by forming a porous skin layer.
(3)請求項1または2記載の合成皮革の製造方法にお
いて、液流染色機にて水溶性天然高分子物質を溶解除去
することを特徴とする合成皮革の製造方法。(3) The method for producing synthetic leather according to claim 1 or 2, characterized in that the water-soluble natural polymer substance is dissolved and removed using a jet dyeing machine.
を要旨とするものである。The main points are as follows.
〔実施例] 以下、本発明の一実施例を図面に基き説明する。〔Example] Hereinafter, one embodiment of the present invention will be described based on the drawings.
第1図は本発明の合成皮革の製造方法の一例を示し、ま
ず例えばシボ付き離型紙lのシボ面に、水溶性天然高分
子物質2(第2図)を含有する表皮層形成用ポリウレタ
ン樹脂の溶液を塗布してドクターナイフ3等によって均
一厚さとした後、加熱オープン4中で乾燥させて水溶性
天然高分子物質2を含有するポリウレタン樹脂層5を形
成し、次いで基材6と重ね合わせて加熱ロール7によっ
て加熱して両者を熱圧着し更に加熱オーブン8中を通過
させて残存する溶剤を完全に揮散させた後に離型紙1を
剥離することにより水溶性天然高分子物質2を含有する
ポリウレタン樹脂層5を基材6に転写積層した積層体9
を得る。FIG. 1 shows an example of the method for producing synthetic leather of the present invention. First, for example, a skin layer-forming polyurethane resin containing a water-soluble natural polymer substance 2 (FIG. 2) is applied to the grained surface of a grained release paper L. After applying the solution to a uniform thickness using a doctor knife 3 or the like, it is dried in a heating oven 4 to form a polyurethane resin layer 5 containing a water-soluble natural polymer substance 2, and then layered with a base material 6. The mixture is heated by a heating roll 7 to bond them together under heat and then passed through a heating oven 8 to completely volatilize the remaining solvent, and then the release paper 1 is peeled off to contain the water-soluble natural polymer substance 2. A laminate 9 in which a polyurethane resin layer 5 is transferred and laminated onto a base material 6
get.
上記基材1としてはナイロン、ポリエステル、綿、レー
ヨン等の繊維単独又はこれらの混紡繊維よりなる織布、
不織布、編布等が用いられる。The base material 1 may be a woven fabric made of fibers such as nylon, polyester, cotton, or rayon alone or a blend of these fibers;
Nonwoven fabrics, knitted fabrics, etc. are used.
水溶性天然高分子物質2としてはせ薯デンプン、馬鈴薯
デンプン、小麦デンプン、クビオカデンプン、コーンス
ターチ等のデンプン質、にかわ、ゼラチン、カゼイン、
コラーゲン等の蛋白質等が挙げられる。これら水溶性天
然高分子物質2は粒径30μ以下、特に20μ以下のも
のを用いることが好ましく、粒径が大きすぎるとこれら
の水溶性天然高分子物質2を含むポリウレタン樹脂を塗
布した際に均一な塗布ができ難くなり、表面にスジ等が
生じ易くなる。上記水溶性天然高分子物質2のポリウレ
タン樹脂中への添加量は、樹脂に対して100〜20重
量%、特に70〜30重量%が好ましい。水溶性天然高
分子物質2の添加量が少なすぎると透湿性、通気性の向
上が望めず、また多すぎると透湿性、通気性は良好とな
るが、膜強度が著しく低下する。Water-soluble natural polymer substances 2 include starches such as potato starch, potato starch, wheat starch, kubioka starch, cornstarch, glue, gelatin, casein,
Examples include proteins such as collagen. It is preferable to use these water-soluble natural polymer substances 2 with a particle size of 30μ or less, particularly 20μ or less; if the particle size is too large, the polyurethane resin containing these water-soluble natural polymer substances 2 will not be uniform when applied. It becomes difficult to apply the product in a consistent manner, and streaks are more likely to occur on the surface. The amount of the water-soluble natural polymer substance 2 added to the polyurethane resin is preferably 100 to 20% by weight, particularly 70 to 30% by weight based on the resin. If the amount of the water-soluble natural polymer substance 2 added is too small, no improvement in moisture permeability or air permeability can be expected, and if it is too large, the moisture permeability or air permeability will be good, but the membrane strength will drop significantly.
上記水溶性天然高分子物質2が添加されるポリウレタン
樹脂としてはポリエステル系ポリウレタン、ポリエーテ
ル系ポリウレタン、ポリカプロラクトン系ポリウレタン
、ポリカーボネート系ポリウレタン等のいずれでも使用
可能である。As the polyurethane resin to which the water-soluble natural polymer substance 2 is added, any of polyester polyurethane, polyether polyurethane, polycaprolactone polyurethane, polycarbonate polyurethane, etc. can be used.
次いで上記積層体9を、ポリウレタン樹脂層5中に含ま
れる水溶性天然高分子物質2の分解酵素を含有する温水
中に浸漬して水溶性天然高分子物質2を溶解除去するこ
とにより、第3図に示す如き微細孔10を有する表皮層
11を形成した合成皮革12が得られる。Next, the laminate 9 is immersed in hot water containing a degrading enzyme for the water-soluble natural polymer substance 2 contained in the polyurethane resin layer 5 to dissolve and remove the water-soluble natural polymer substance 2, thereby forming a third layer. A synthetic leather 12 having a skin layer 11 having micropores 10 as shown in the figure is obtained.
上記分解酵素としてはポリウレタン樹脂層5中に含まれ
る水溶性天然高分子物質2がデンプン質である場合には
アミラーゼが、水溶性天然高分子物質2が蛋白質である
場合にはプロテアーゼが使用される。これらの分解酵素
が水溶性高分子物質を溶解処理するための温水中に含ま
れていることにより、分解酵素を含まない場合に比べて
低温で効率よく水溶性天然高分子物質の溶解処理を行う
ことができ、ポリウレタン樹脂の劣化を防止できるとも
に、水溶性天然高分子物質の溶解除去時間の短縮、除去
率の向上を図ることができる。これらの分解酵素の添加
量は浸漬処理するシートのポリウレタン樹脂中に含まれ
る水溶性天然高分子物質の重量の0.01−5重量%が
好ましい。水溶性天然高分子物質2の溶解除去に際し、
処理液のpl+を分解酵素の活性が高(なる範囲に調整
することが好ましく、酵素がアミラーゼの場合にはpH
=5〜7が、プロテアーゼの場合にはpH=7〜11と
することが好ましい。水溶性天然高分子物質2の溶解除
去は50〜70’C程度の温水中に積層体9を0.5〜
2時間程度浸漬して行うことが好ましい。As the degrading enzyme, amylase is used when the water-soluble natural polymer substance 2 contained in the polyurethane resin layer 5 is starch, and protease is used when the water-soluble natural polymer substance 2 is a protein. . By containing these degrading enzymes in the hot water for dissolving water-soluble polymeric substances, the dissolution process of water-soluble natural polymeric substances can be carried out more efficiently at lower temperatures than when no degrading enzymes are included. This makes it possible to prevent deterioration of the polyurethane resin, shorten the time for dissolving and removing the water-soluble natural polymer substance, and improve the removal rate. The amount of these degrading enzymes added is preferably 0.01 to 5% by weight of the water-soluble natural polymer substance contained in the polyurethane resin of the sheet to be immersed. When dissolving and removing water-soluble natural polymer substance 2,
It is preferable to adjust the pl+ of the treatment solution to a range where the activity of the degrading enzyme is high.If the enzyme is amylase, the pH
In the case of protease, pH=5 to 7 is preferably set to pH=7 to 11. The water-soluble natural polymer substance 2 is dissolved and removed by dissolving and removing the laminate 9 in hot water of about 50 to 70'C.
It is preferable to soak for about 2 hours.
水溶性天然高分子物質2の溶解除去を揉み処理を施しな
がら行うと、溶解除去率が向上するとともに、柔軟処理
を同時に行うことができる。この揉み処理は液流染色機
により行うと良好に行うことができ好ましい。When the water-soluble natural polymeric substance 2 is dissolved and removed while being subjected to the rubbing treatment, the dissolution and removal rate is improved, and the softening treatment can be performed at the same time. This rubbing treatment is preferably carried out using a jet dyeing machine because it can be carried out well.
尚、揉み処理は水溶性天然高分子物質の溶解除に後に別
工程で行ってもよい。Note that the rubbing treatment may be performed in a separate step after dissolving the water-soluble natural polymer substance.
上記の例では水溶性天然高分子物質2を含有するポリウ
レタン樹脂層5を加熱ラミネートにより基材lに積層一
体化する場合について示したが、接着剤により基材lに
接着してもよく、この場合、接着剤中にも水溶性天然高
分子物質2を含有させておく。これは表皮層を形成する
ためのポリウレタン樹脂層中に含有される水溶性天然高
分子物質2が積層体9の表面側からも裏面側からも効率
良(溶解除去されるようにするためである。接着剤とし
てはポリエステル系ポリウレタン、ポリエーテル系ポリ
ウレタン、ポリカプロラクトン系ポリウレタン、ポリカ
ーボネート系ポリウレタン等の2液型ポリウレタン樹脂
等を用いることができる。The above example shows the case where the polyurethane resin layer 5 containing the water-soluble natural polymer substance 2 is laminated and integrated with the base material l by heating lamination, but it may also be adhered to the base material l with an adhesive. In this case, the water-soluble natural polymer substance 2 is also contained in the adhesive. This is to ensure that the water-soluble natural polymer substance 2 contained in the polyurethane resin layer for forming the skin layer is efficiently (dissolved and removed) both from the front side and the back side of the laminate 9. As the adhesive, two-component polyurethane resins such as polyester polyurethane, polyether polyurethane, polycaprolactone polyurethane, and polycarbonate polyurethane can be used.
本発明においては基材1の少なくとも片面にポリウレタ
ン樹脂の親水性有i溶媒溶液(例えばDMF等)を塗布
した後、水中に浸漬して溶媒を除去してポリウレタンを
凝固させるとともに、脱溶媒による孔13を有する微多
孔N14を形成し、しかる後、この表面に前記と同様に
して水溶性天然高分子物質2を含有するポリウレタン樹
脂層5を形成し、次いでこのポリウレタン樹脂層5中の
水溶性天然高分子物質2を同様にして溶解除去して微細
孔10を有する表皮層11を設けた第4図に示す如き合
成皮革とすることもできる。このような微多孔層14を
設けると柔軟性がより向上し更に天然皮革に類似した感
触を有する合成皮革とな石。In the present invention, after applying a hydrophilic solvent solution (for example, DMF, etc.) of a polyurethane resin to at least one side of the base material 1, the polyurethane is solidified by immersing it in water to remove the solvent, and pores are formed by removing the solvent. After that, a polyurethane resin layer 5 containing a water-soluble natural polymer substance 2 is formed on the surface of the microporous N14 having a water-soluble natural polymer substance 2 in the same manner as described above. The polymer substance 2 can also be dissolved and removed in the same manner to produce synthetic leather as shown in FIG. 4, in which a skin layer 11 having micropores 10 is provided. By providing such a microporous layer 14, the flexibility of the synthetic leather is further improved and the synthetic leather has a feel similar to natural leather.
更に表皮層11の表面又は表皮層11を形成するための
ポリウレタン樹脂層5の表面に水溶性天然高分子物質を
含有するポリウレタン樹脂層をグラビアコート法等によ
って塗布し、次いで水溶性天然高分子物質を溶解除去し
て微細孔10を有する表面処理層15を設けた第5図に
示す如き合成皮革とすることもできる。表面処理層15
を形成するためのポリウレタン樹脂は、乾燥時の塗布量
が1〜5g/rrf程度となるように塗布することが好
ましい。この表面処理層15を形成するために用いるポ
リウレタン樹脂溶液としては通常のポリウレタン樹脂の
他にシリコン変性ポリウレタン樹脂、アミノ酸変性ポリ
ウレタン樹脂、ポリアミド変性ポリウレタン樹脂等が用
いられる。表皮層11の表面に更に微細孔IOを有する
表面処理層15を設けると、表面の感触を更に天然皮革
の感触に類似させることができる。Further, a polyurethane resin layer containing a water-soluble natural polymer substance is coated on the surface of the skin layer 11 or the surface of the polyurethane resin layer 5 for forming the skin layer 11 by a gravure coating method, and then the water-soluble natural polymer substance is applied. It is also possible to obtain a synthetic leather as shown in FIG. 5 in which a surface treatment layer 15 having micropores 10 is provided by dissolving and removing the pores. Surface treatment layer 15
It is preferable to apply the polyurethane resin for forming the film so that the dry coating amount is about 1 to 5 g/rrf. As the polyurethane resin solution used to form this surface treatment layer 15, in addition to ordinary polyurethane resins, silicon-modified polyurethane resins, amino acid-modified polyurethane resins, polyamide-modified polyurethane resins, etc. are used. If a surface treatment layer 15 having micropores IO is further provided on the surface of the skin layer 11, the feel of the surface can be made more similar to that of natural leather.
尚、本発明において表皮層11の着色の目的で表皮層1
1を形成するポリウレタン樹脂層5中又は必要により上
記ポリウレタン樹脂N5の接着の目的で設けられる接着
剤層中に顔料、染料等の着色剤を添加することができる
。また表皮層11中には更に必要により各種安定剤、充
填剤等、その他の添加剤を添加することもできる。In addition, in the present invention, for the purpose of coloring the epidermal layer 11, the epidermal layer 1
A coloring agent such as a pigment or dye can be added to the polyurethane resin layer 5 forming the polyurethane resin N5 or, if necessary, to the adhesive layer provided for the purpose of adhering the polyurethane resin N5. Furthermore, other additives such as various stabilizers and fillers may be added to the skin layer 11 if necessary.
以下、具体的実施例を挙げて本発明を更に詳細に説明す
る。Hereinafter, the present invention will be explained in more detail by giving specific examples.
実施例1
シボ付き離型紙の表面に、平均粒径15μのカゼインを
45重量%含有する100%モジュラスが70kg/c
+flのポリエステル系ポリウレタン樹脂(大日本イン
キ製:クリスポンNB−6313)の19%DMF−M
EK溶液(着色剤をポリウレタン樹脂100重量部当た
りに対して15重量部含有)を乾燥時の厚さが20μと
なるようにナイフコーターにて塗布して90″Cで1.
5分間熱風乾燥させ、ポリウレタン樹脂層を形成した。Example 1 The surface of textured release paper contains 45% by weight of casein with an average particle size of 15μ, and the 100% modulus is 70kg/c.
+fl polyester polyurethane resin (Dainippon Ink: Crispon NB-6313) 19% DMF-M
An EK solution (containing 15 parts by weight of colorant per 100 parts by weight of polyurethane resin) was coated with a knife coater to a dry thickness of 20 μm and heated at 90″C for 1.
It was dried with hot air for 5 minutes to form a polyurethane resin layer.
次いでこのポリウレタン樹脂層表面に平均粒径が15μ
のカゼインを50重量%含有する100%モジュラスが
20kg/cIIIの2波型ポリウレタン接着剤(大日
本インキ製:クリスボンTA−465)の40%MEK
−トルエン溶液を目付量が100g/ボとなるように塗
布し、これを90″Cで1.5分間熱風乾燥させた後、
厚さ0.5 mmのウーリーナイロントリコッl−W布
(基材)と貼合わせ、更に加熱乾燥して接着剤を硬化さ
せ、しかる後、離型紙を剥離し、基材にカゼインを含有
するポリウレタン樹脂層を転写して積層体を形成した。Next, on the surface of this polyurethane resin layer, particles having an average particle size of 15 μm were coated.
40% MEK of two-wave type polyurethane adhesive (Dainippon Ink Co., Ltd.: Crisbon TA-465) with a 100% modulus of 20 kg/cIII containing 50% by weight of casein.
- After applying a toluene solution to a basis weight of 100 g/bottom and drying it with hot air at 90"C for 1.5 minutes,
It is laminated with a woolly nylon tricot L-W cloth (base material) with a thickness of 0.5 mm, and then heated and dried to harden the adhesive. After that, the release paper is peeled off, and the base material contains casein. A laminate was formed by transferring the polyurethane resin layer.
この積層体を液流染色機により、カゼイン分解酵素であ
るアルカラーゼ2.OT(ノボ社製バチルスリケニルフ
ォルミス細菌プロテアーゼ)を2重量%含有するpH=
8.0の50°Cの温水に60分間浸漬して揉み処理し
ながらカゼインを溶解除去し、微細孔を有する表皮層を
形成して合成皮革とした。This laminate was dyed with Alcalase 2, a casein degrading enzyme, using a jet dyeing machine. pH containing 2% by weight of OT (Bacillus lichenylformis bacterial protease manufactured by Novo) =
The casein was dissolved and removed while being immersed in 50°C warm water of 8.0°C for 60 minutes and rubbed, forming a skin layer with micropores to obtain synthetic leather.
得られた合成皮革は風合がソフトでドレープ性があり、
かつ揉み皺が長期間に亘って保持され、きわめて柔軟性
に富み、外観、風合ともに天然皮革に酷似し、衣料用素
材として好適なものであった。この合成皮革の透湿度(
JIS Z−0208による)は2870g/rd・2
4時間であり、また通気度(JIS L−1096によ
る)は0.5 cc/c++1 ・秒であった。The resulting synthetic leather has a soft texture and drapability.
Moreover, it retained its wrinkles after being rubbed for a long period of time, was extremely flexible, and had an appearance and feel very similar to natural leather, making it suitable as a material for clothing. The moisture permeability of this synthetic leather (
According to JIS Z-0208) is 2870g/rd・2
4 hours, and the air permeability (according to JIS L-1096) was 0.5 cc/c++1·sec.
また表皮層中のカゼインの除去率は95%であった。Furthermore, the removal rate of casein in the epidermal layer was 95%.
実施例2
厚さ0.4 mmのアクリル不織布(基材)の粗起毛面
に100%モジュラスが20kg/c+ITのポリエス
テル系ポリウレタン樹脂(大日本インキ製:クリスボン
MP812NB)の11%DMF溶液を目付量が600
g/rriとなるように塗布した後、20°Cの水中
で脱溶媒して凝固し、次いで脱水後130°Cの熱風下
で乾燥して厚さ0.55 mmの微多孔層を有する基材
を得た。Example 2 A 11% DMF solution of a polyester polyurethane resin (manufactured by Dainippon Ink: Crisbon MP812NB) with a 100% modulus of 20 kg/c+IT was applied to the roughly brushed surface of a 0.4 mm thick acrylic nonwoven fabric (base material). is 600
g/rri, then desolvated in water at 20°C to solidify, dehydrated and dried under hot air at 130°C to form a base having a microporous layer with a thickness of 0.55 mm. I got the material.
一方、シボ付きに1型紙の表面に、平均粒径12μのに
かわを50重量%含有する100%モジュラスが60k
g/cnlのポリエステル系ポリウレタン樹脂(大日精
化製:レザミンME3614LP)の20%DMF−M
EK溶液(着色剤をポリウレタン樹脂100重量部に対
して15重量部含有)を乾燥時の厚さが25μとなるよ
うにナイフコーターにて塗布して10°Cにて2分間熱
風乾燥させ、ポリ・ウレタン樹脂層を形成し、このポリ
ウレタン樹脂層の表面に前記微多孔層を形成した基材の
微多孔層面を加熱しながら140°Cにて熱圧着した後
、離型紙を剥離して微多孔層表面ににかわを含有するポ
リウレタン樹脂層を転写した積層体を得た。この積層体
を液流染色機により、にかわの分解酵素であるエンチロ
ンSA(洛東化成製:バチルス属の細菌プロテアーゼ)
を1.5重量%含有するp11=7.5の60°Cの温
水に60分間浸漬して揉み処理しながらにかわを溶解除
去し、微細孔を有する表皮層を形成して合成皮革とした
。On the other hand, the 100% modulus of paper containing 50% by weight of glue with an average particle size of 12μ on the surface of pattern 1 paper is 60k.
20% DMF-M of polyester polyurethane resin (Rezamin ME3614LP manufactured by Dainichiseika Chemical Co., Ltd.) of g/cnl
EK solution (containing 15 parts by weight of coloring agent per 100 parts by weight of polyurethane resin) was applied with a knife coater to a dry thickness of 25μ, dried with hot air at 10°C for 2 minutes, and coated with polyurethane resin.・After forming a urethane resin layer and thermocompression bonding at 140°C while heating the microporous layer surface of the base material with the microporous layer formed on the surface of this polyurethane resin layer, the release paper is peeled off to form the microporous layer. A laminate was obtained in which a polyurethane resin layer containing glue was transferred to the layer surface. This laminate is dyed using a jet dyeing machine using Enthiron SA (manufactured by Rakuto Kasei: bacterial protease of the genus Bacillus), which is a glue-degrading enzyme.
The material was immersed in warm water at 60° C. containing 1.5% by weight of P11 = 7.5 for 60 minutes and rubbed while dissolving and removing the glue, forming a skin layer with micropores to obtain synthetic leather.
得られた合成皮革は風合がソフトでドレープ性があり、
かつ揉み皺が長期間に亘って保持され、きわめて柔軟性
に富み、外観、風合ともに天然皮革に酷似し、衣料用素
材として好適なものであった。この合成皮革の透湿度は
3650 g/%・24時間であり、また通気度は0.
7 cc / cla・秒であった。また表皮層中のに
かわの除去率は98%であった。The resulting synthetic leather has a soft texture and drapability.
Moreover, it retained its wrinkles after being rubbed for a long period of time, was extremely flexible, and had an appearance and feel very similar to natural leather, making it suitable as a material for clothing. The moisture permeability of this synthetic leather is 3650 g/% for 24 hours, and the air permeability is 0.
It was 7 cc/cla·sec. The removal rate of glue in the epidermal layer was 98%.
実施例3
厚さ0.45 mraのポリノジック礒布(基材)の起
毛面に100%モジュラスが25kg/cfflのポリ
エステル系ポリウレタン樹脂(大日精化製:レザミンC
US−100)の10%DMF溶液を目付量が600
g/rrfとなるように塗布した後、20°Cの水中で
脱溶媒して凝固し、次いで脱水後130°Cの熱風下で
乾燥して厚さ0.60a++の微多孔層を有する基材を
得た。Example 3 A polyester polyurethane resin (manufactured by Dainichiseika Chemical Co., Ltd.: Rezamin C) with a 100% modulus of 25 kg/cffl was applied to the raised surface of a polynosic cloth (base material) with a thickness of 0.45 mra.
US-100) 10% DMF solution with a basis weight of 600
g/rrf, then desolvated in water at 20°C to solidify, then dehydrated and dried under hot air at 130°C to form a base material having a microporous layer with a thickness of 0.60a++. I got it.
一方、シボ付き離型紙の表面に、平均粒径17μの馬鈴
薯デンプンを60重量%含有する100%モジュラスが
40kg/cdのポリエステル系ポリウレタン樹脂(大
日精化製:レザミンME3412LP)の18%DMF
−MEK溶液(着色剤をポリウレタン樹脂100重量部
に対して20重量部含有)を乾燥時の厚さが20μとな
るようにナイフコーターにて塗布して90°Cにて2分
間熱風乾燥させ、ポリウレタン樹脂層を形成し、このポ
リウレタン樹脂層の表面に前記微多孔層を形成した基材
の微多孔層面を加熱しなから145°Cにて熱圧着した
後、離型紙を剥離して微多孔層表面にに馬鈴薯デンプン
を含有するポリウレタン樹脂層を転写した積層体を得た
。この積層体を液流染色機により、馬鈴薯デンプンの分
解酵素であるエンチロンFA(洛東化成製:アスペルギ
ルス属の細菌アミラーゼ)を2重量%含有するpH−5
,5の60°Cの温水に60分間浸漬して揉み処理しな
がら馬鈴薯デンプンを溶解除去し、微細孔を有する表皮
層を形成して合成皮革とした。On the other hand, on the surface of the textured release paper, 18% DMF of a polyester-based polyurethane resin (Rezamin ME3412LP, manufactured by Dainichiseika Chemical Co., Ltd.) with a 100% modulus of 40 kg/cd and containing 60% by weight of potato starch with an average particle size of 17 μm was applied.
- MEK solution (containing 20 parts by weight of coloring agent per 100 parts by weight of polyurethane resin) was applied with a knife coater to a dry thickness of 20μ, and dried with hot air at 90°C for 2 minutes, A polyurethane resin layer is formed, and the microporous layer surface of the base material on which the microporous layer is formed is thermocompressed at 145°C without heating, and the release paper is peeled off to form the microporous layer. A laminate was obtained in which a polyurethane resin layer containing potato starch was transferred to the layer surface. This laminate was dyed using a jet dyeing machine with a pH-5 dye containing 2% by weight of Enthiron FA (manufactured by Rakuto Kasei: Aspergillus amylase), which is a potato starch degrading enzyme.
, 5 in warm water at 60°C for 60 minutes, the potato starch was dissolved and removed while being rubbed, and a skin layer with micropores was formed to obtain synthetic leather.
得られた合成皮革は風合がソフトでドレープ性があり、
かつ揉み皺が長期間に亘って保持され、きわめて柔軟性
に冨み、外観、風合ともに天然皮革に酷似し、衣料用素
材として好適なものであった。この合成皮革の透湿度は
3790g/rrf・24時間であり、また通気度は0
.7cc/d・秒であった。また表皮層中の馬鈴薯デン
プンの除去率は97%であった。The resulting synthetic leather has a soft texture and drapability.
Moreover, it retained its wrinkles after being rubbed for a long period of time, was extremely flexible, and had an appearance and feel very similar to natural leather, making it suitable as a material for clothing. The moisture permeability of this synthetic leather is 3790g/rrf・24 hours, and the air permeability is 0.
.. It was 7 cc/d·sec. Moreover, the removal rate of potato starch in the epidermal layer was 97%.
比較例1
カゼインの溶解除去の処理液としてカゼイン分解酵素を
含有しないものを用いた他は実施例1と同様にして合成
皮革を得た(液流染色機による揉み処理も同様に施した
。)。得られた合成皮革の透湿度は1360g/rrr
・24時間であり、通気度はQ、’l cc / ci
・秒以下であった。また表皮層中のカゼインの除去率は
47%であった。Comparative Example 1 Synthetic leather was obtained in the same manner as in Example 1, except that a solution containing no casein degrading enzyme was used as the treatment solution for dissolving and removing casein (rubbing treatment using a jet dyeing machine was also performed in the same manner). . The moisture permeability of the obtained synthetic leather is 1360g/rrr
・24 hours, air permeability is Q,'l cc/ci
・It was less than seconds. Furthermore, the removal rate of casein in the epidermal layer was 47%.
比較例2
にかわの溶解除去の処理液としてにかわ分解酵素を含有
しないものを用いた他は実施例2と同様にして合成皮革
を得た(液流染色機による揉み処理も同様に施した。)
。得られた合成皮革の透湿度は1990g/m・24時
間であり、通気度は0、3 cc / CTM・秒以下
であった。また表皮層中のにかわの除去率は54%であ
った。Comparative Example 2 Synthetic leather was obtained in the same manner as in Example 2, except that a treatment solution containing no glue-degrading enzyme was used for dissolving and removing glue (rubbing treatment using a jet dyeing machine was also performed in the same manner).
. The resulting synthetic leather had a moisture permeability of 1990 g/m·24 hours and an air permeability of 0.3 cc/CTM·sec or less. The removal rate of glue in the epidermal layer was 54%.
比較例3
馬鈴薯デンプンの溶解除去の処理液として馬鈴薯デンプ
ン分解酵素を含有しないものを用いた他は実施例3と同
様にして合成皮革を得た(液流染色機による揉み処理も
同様に施した。)。得られた合成皮革の透湿度は216
0g/rrf・24時間であり、通気度は0.3Cc/
cI11・秒以下であった。Comparative Example 3 Synthetic leather was obtained in the same manner as in Example 3, except that a solution containing no potato starch degrading enzyme was used as the treatment solution for dissolving and removing potato starch (rubbing treatment using a jet dyeing machine was also performed in the same manner) ). The moisture permeability of the obtained synthetic leather is 216
0g/rrf・24 hours, air permeability 0.3Cc/
The cI was 11 seconds or less.
また表皮層中の馬鈴薯デンプンの除去率は57%であっ
た。Moreover, the removal rate of potato starch in the epidermal layer was 57%.
比較例4
表皮層形成用のポリウレタン樹脂がカゼインを含有しな
い他は実施例1と同様にして合成皮革を得た(液流染色
機による揉み処理も同様に施した。Comparative Example 4 Synthetic leather was obtained in the same manner as in Example 1, except that the polyurethane resin for forming the skin layer did not contain casein (rubbing treatment using a jet dyeing machine was also performed in the same manner).
)。得られた合成皮革の透湿度は130g/rrr・2
4時間であり、通気度はQ、2cc/c−・秒以下であ
った。). The moisture permeability of the obtained synthetic leather is 130g/rrr・2
The air permeability was Q, 2 cc/c-sec or less.
比較例5
表皮層形成用のポリウレタン樹脂かにかわを含有しない
他は実施例2と同様にして合成皮革を得た(液流染色機
による揉み処理も同様に施した。Comparative Example 5 Synthetic leather was obtained in the same manner as in Example 2 except that the polyurethane resin for forming the skin layer did not contain glue (rubbing treatment using a jet dyeing machine was also performed in the same manner).
)。得られた合成皮革の透湿度は1260g/rrr・
24時間であり、通気度は0. 2cc/cffl・秒
以下であった。). The resulting synthetic leather has a moisture permeability of 1260g/rrr.
It is 24 hours, and the air permeability is 0. It was less than 2cc/cffl·sec.
比較例6
表皮層形成用のポリウレタン樹脂が馬鈴薯デンプンを含
有しない他は実施例3と同様にして合成皮革を得た(液
流染色機による揉み処理も同様に施した。)。得られた
合成皮革の透湿度は1370g/ボ・24時間であり、
通気度は0.2cc/C艷・秒以下であった。Comparative Example 6 Synthetic leather was obtained in the same manner as in Example 3, except that the polyurethane resin for forming the skin layer did not contain potato starch (the rolling treatment using a jet dyeing machine was also performed in the same manner). The moisture permeability of the obtained synthetic leather was 1370 g/bo for 24 hours,
The air permeability was 0.2 cc/C⋅sec or less.
以上説明したように本発明方法は基材の表面に水溶性天
然高分子物質を含有するポリウレタン樹脂層を設けた後
、該ポリウレタン樹脂層中の水溶性天然高分子物質を、
該水溶性天然高分子物質の分解酵素を含有する温水中で
溶解除去して多孔性とした表皮層を形成する方法を採用
したことにより、透湿性、通気性に優れ、しかも感触が
ソフトでドレープ性を有するきわめて柔軟性に優れ、外
観、風合もきわめて天然皮革に類似した合成皮革を得る
ことができる。また表皮層と基材との間に湿式法によっ
て形成した微多孔層を設けると柔軟性を更に向上するこ
とができる。また本発明の方法によれば、表皮層形成用
ポリウレタン樹脂層中の水溶性天然高分子物質を効率良
く溶解除去できる。更に水溶性天然高分子物質の溶解除
去に液流染色機を用いると水溶性天然高分子物質の除去
と柔軟化処理とを同時に施すことができる等の効果を存
する。As explained above, in the method of the present invention, after providing a polyurethane resin layer containing a water-soluble natural polymer substance on the surface of a base material, the water-soluble natural polymer substance in the polyurethane resin layer is
By adopting a method of dissolving and removing the water-soluble natural polymer substance in warm water containing degrading enzymes to form a porous skin layer, it has excellent moisture permeability and air permeability, and is soft to the touch and drapey. Synthetic leather can be obtained that has excellent flexibility, has excellent elasticity, and has an appearance and feel very similar to natural leather. Further, the flexibility can be further improved by providing a microporous layer formed by a wet method between the skin layer and the base material. Further, according to the method of the present invention, the water-soluble natural polymer substance in the polyurethane resin layer for forming the skin layer can be efficiently dissolved and removed. Furthermore, if a jet dyeing machine is used to dissolve and remove the water-soluble natural polymeric substance, it is possible to perform the removal of the water-soluble natural polymeric substance and the softening treatment at the same time.
図面は本発明の一実施例を示し、第1図は本発明の製造
方法の一例を示す説明図、第2図は第1図の■−■線縦
線面断面図3図は本発明により得られる合成皮革の一例
を示す縦断面図、第4図、第5図は各々本発明により得
られる合成皮革の異なる態様を示す縦断面図である。
2・・・水溶性天然高分子物質 5・・・ポリレタン樹
脂層 6・・・基材 10・・・微細孔 11・・・表
皮層12・・・合成皮革 13・・・孔 14・・・微
多孔層第 1 図
I
第2図
6:基
材The drawings show one embodiment of the present invention, FIG. 1 is an explanatory diagram showing an example of the manufacturing method of the present invention, FIG. 2 is a cross-sectional view taken along the vertical line in FIG. A vertical cross-sectional view showing an example of the synthetic leather obtained, and FIGS. 4 and 5 are longitudinal cross-sectional views showing different aspects of the synthetic leather obtained by the present invention, respectively. 2... Water-soluble natural polymer substance 5... Polyurethane resin layer 6... Base material 10... Fine pores 11... Skin layer 12... Synthetic leather 13... Holes 14... Microporous layer Figure 1 Figure 2 Figure 6: Base material
Claims (3)
含有するポリウレタン樹脂層を形成した後、該積層体を
上記水溶性天然高分子物質の分解酵素を含む温水中に浸
漬して水溶性天然高分子物質を溶解除去して多孔性の表
皮層を形成することを特徴とする合成皮革の製造方法。(1) After forming a polyurethane resin layer containing a water-soluble natural polymer substance on at least one side of the base material, the laminate is immersed in hot water containing a degrading enzyme for the water-soluble natural polymer substance to dissolve the water-soluble natural polymer substance. A method for producing synthetic leather, characterized by forming a porous skin layer by dissolving and removing natural polymeric substances.
性有機溶媒溶液を塗布した後、水中に浸漬して溶媒を除
去するとともにポリウレタンを凝固させてポリウレタン
樹脂の微多孔層を形成し、次いでその表面に水溶性天然
高分子物質を含有するポリウレタン樹脂層を形成した後
、該積層体を上記水溶性天然高分子物質の分解酵素を含
む温水中に浸漬して水溶性天然高分子物質を溶解除去し
て多孔性の表皮層を形成することを特徴とする合成皮革
の製造方法。(2) After coating a hydrophilic organic solvent solution of polyurethane resin on at least one side of the substrate, immerse it in water to remove the solvent and coagulate the polyurethane to form a microporous layer of polyurethane resin, and then form a microporous layer of polyurethane resin on the surface. After forming a polyurethane resin layer containing a water-soluble natural polymer substance, the laminate is immersed in hot water containing a degrading enzyme for the water-soluble natural polymer substance to dissolve and remove the water-soluble natural polymer substance. A method for producing synthetic leather, characterized by forming a porous skin layer.
いて、液流染色機にて水溶性天然高分子物質を溶解除去
することを特徴とする合成皮革の製造方法。(3) The method for producing synthetic leather according to claim 1 or 2, characterized in that the water-soluble natural polymer substance is dissolved and removed using a jet dyeing machine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24568788A JPH0291278A (en) | 1988-09-29 | 1988-09-29 | Production of synthetic leather |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24568788A JPH0291278A (en) | 1988-09-29 | 1988-09-29 | Production of synthetic leather |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0291278A true JPH0291278A (en) | 1990-03-30 |
Family
ID=17137323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24568788A Pending JPH0291278A (en) | 1988-09-29 | 1988-09-29 | Production of synthetic leather |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0291278A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009041596A (en) * | 2007-08-06 | 2009-02-26 | Hi-Lex Corporation | Terminal fixing structure for control cable |
CN102899918A (en) * | 2012-10-11 | 2013-01-30 | 福建可利达合成纤维有限公司 | Method for producing wet-process waterborne polyurethane synthetic leather coating base |
-
1988
- 1988-09-29 JP JP24568788A patent/JPH0291278A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009041596A (en) * | 2007-08-06 | 2009-02-26 | Hi-Lex Corporation | Terminal fixing structure for control cable |
CN102899918A (en) * | 2012-10-11 | 2013-01-30 | 福建可利达合成纤维有限公司 | Method for producing wet-process waterborne polyurethane synthetic leather coating base |
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