JPH01314789A - Synthetic leather - Google Patents
Synthetic leatherInfo
- Publication number
- JPH01314789A JPH01314789A JP14082788A JP14082788A JPH01314789A JP H01314789 A JPH01314789 A JP H01314789A JP 14082788 A JP14082788 A JP 14082788A JP 14082788 A JP14082788 A JP 14082788A JP H01314789 A JPH01314789 A JP H01314789A
- Authority
- JP
- Japan
- Prior art keywords
- skin layer
- leather
- layer
- natural leather
- polyurethane resin
- 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 46
- 239000010410 layer Substances 0.000 claims abstract description 82
- 239000010985 leather Substances 0.000 claims abstract description 67
- 239000000843 powder Substances 0.000 claims abstract description 46
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 40
- 239000002245 particle Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 18
- 239000002335 surface treatment layer Substances 0.000 claims description 14
- 239000006260 foam Substances 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 abstract description 14
- 239000004814 polyurethane Substances 0.000 abstract description 14
- 239000000758 substrate Substances 0.000 abstract description 8
- 229920000728 polyester Polymers 0.000 abstract description 6
- 239000004744 fabric Substances 0.000 abstract description 4
- 239000002344 surface layer Substances 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract description 3
- 239000004677 Nylon Substances 0.000 abstract description 2
- 229920001778 nylon Polymers 0.000 abstract description 2
- 239000011247 coating layer Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 210000003491 skin Anatomy 0.000 description 43
- 238000000034 method Methods 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 210000002615 epidermis Anatomy 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 241000219146 Gossypium Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000010409 thin film Substances 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〕 本発明は合成皮革に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to synthetic leather.
〔従来の技術〕 ・
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、合成皮革は表面がウェットで、しかも寒
冷時に表面に触れるとひんやりとした感触を与えるため
、ドライタッチで寒冷時にも温もりを惑しる天然皮革様
の表面感触により近づけるために種々の改良が加えられ
ている。[Conventional technology] - In recent years, artificial leather and synthetic leather, which are formed by laminating a synthetic resin elastic material such as polyurethane on a base material such as woven fabric or non-woven fabric, have become widely used in place of natural leather. However, these artificial leathers and synthetic leathers have a wet surface and give a cool feeling when touched in cold weather, so in order to make the surface feel closer to that of natural leather, which has a dry touch and gives off a sense of warmth even in cold weather. Various improvements have been made.
人工皮革、合成皮革の風合、触感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屯量％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。As a method to bring the texture, touch, etc. of artificial leather and synthetic leather closer to those of natural leather, a method has been proposed in which natural leather powder is added to synthetic resin. Natural leather powder is added to a thermoplastic resin compound in a weight ratio of 70 to 30 tonne based on the leather powder, and a foaming agent is further added to this and mixed, followed by hot rolling to form a foam sheet. Artificial leather (Japanese Unexamined Patent Publication No. 63-10641) is known.
（発明が解決しようとする課題〕
しかし公から上記特開昭６３−１０６４１号公報に記載
された人口「皮革は加熱圧延して発泡してシーＩ・状に
形成しているため、表皮部分に所謂スー１−ン層か形成
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か阻害される。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
然皮革わ）末を多量に添加すると、表面感触の向上はｊ
コ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。(Problem to be Solved by the Invention) However, the population stated in the above-mentioned Japanese Patent Application Laid-Open No. 10641/1983 is that "leather is heat-rolled and foamed to form a sheet shape, so the outer skin part A so-called skin layer is formed, and this skin layer inhibits the natural leather-like feel obtained by adding natural leather powder.Therefore, it is necessary to slice and remove the skin layer.
In addition to making the manufacturing process more complicated, since natural leather powder is added to the resin and foamed, the natural leather powder is dispersed throughout the artificial leather, so unless a large amount of natural leather powder is added, the surface If a sufficient improvement in the feel of the surface is not obtained, and if a large amount of natural leather powder is added, the improvement in the surface feel is
Although it was broken, the strength of the entire leather decreased, making it unusable for practical use, which is a contradictory drawback.
本発明は−１−記の従来技術の欠点を解決し、表面の感
触に優れた合成皮革を提供することを目的とする。The object of the present invention is to solve the drawbacks of the prior art described in -1- and to provide synthetic leather with an excellent surface feel.
即ち本発明は、
（１）基材の片面に粒径３０μ以下の天然皮革微粉末を
含有するポリウレタン樹脂よりなる表皮層が積層一体化
されていることを特徴とする合成皮革。That is, the present invention provides: (1) A synthetic leather characterized in that a skin layer made of a polyurethane resin containing fine natural leather powder with a particle size of 30 μm or less is laminated and integrated on one side of a base material.
（２）基材の片面にポリウレタン樹脂の微多孔層が積層
一体化され、更にその表面に粒径３０μ以下の天然皮革
微粉末を含有するポリウレタン樹脂よりなる表皮層が積
層一体化されていることを特徴とする合成皮革。(2) A microporous layer of polyurethane resin is laminated and integrated on one side of the base material, and a skin layer made of polyurethane resin containing fine natural leather powder with a particle size of 30μ or less is further laminated and integrated on the surface. Synthetic leather characterized by
（３）基材の片面にポリウレタン樹脂の発泡体層が積層
一体化され、更にその表面に粒径３０μ以下の天然皮革
微粉末を含有するポリウレタン樹脂よりなる表皮層が積
層一体化されていることを特徴とする合成皮革。(3) A foam layer of polyurethane resin is laminated and integrated on one side of the base material, and a skin layer made of polyurethane resin containing fine natural leather powder with a particle size of 30μ or less is further laminated and integrated on the surface. Synthetic leather characterized by
（４）請求項１〜３のいずれかに記載の合成皮革におい
て、表皮層の表面に更に粒径３０μ以下の天然皮革微粉
末を含有するポリウレタン樹脂により表面処理層を設Ｌ
Ｊたことを特徴とする合成皮革。(4) In the synthetic leather according to any one of claims 1 to 3, a surface treatment layer is further provided on the surface of the skin layer using a polyurethane resin containing fine natural leather powder with a particle size of 30 μm or less.
Synthetic leather characterized by J.
を要旨とするものである。The main points are as follows.
以下、本発明の一実施例を図面に基き説明する。 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１の一実施例を示し、２ばｖ
５祠、ｊ３は基材２に積層一体化された表皮層であり、
表皮層３中には天然皮革微粉末４が含有されている。FIG. 1 shows an embodiment of the synthetic leather 1 of the present invention, and
5, j3 is a skin layer that is laminated and integrated with the base material 2,
The skin layer 3 contains natural leather fine powder 4.
上記基材２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ｍ糺よりなる織布、
不織布、編布等が用いられる。表皮層３はポリウレタン
樹脂により構成され、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、
ラクトン系ポリウレタン、ポリカーボネート系ポリウレ
タン等のいずれても使用可能である。表皮層３中に含有
される天然皮革微粉末４は天然皮革を乾燥状態で粉砕し
たりり゛ンディング等によって削って得られた粉末であ
るか、本発明において用いる天然皮革微粉末４は最大粒
径が３０μ以下のものを用いることが必要である。最大
粒径が３０μを超えるものを用いると表皮層となる薄膜
を形成させる時に塗布糊のスジ発生の原因となる。天然
皮革微粉末４は好ましくは最大粒径２０μ以下のもので
ある。The base material 2 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. The skin layer 3 is made of polyurethane resin, and examples of the polyurethane resin include polyester polyurethane, polyether polyurethane,
Any of lactone-based polyurethane, polycarbonate-based polyurethane, etc. can be used. The fine natural leather powder 4 contained in the skin layer 3 is a powder obtained by grinding natural leather in a dry state or scraping it by grinding or the like, or the fine natural leather powder 4 used in the present invention has a maximum particle size. It is necessary to use a material with a diameter of 30μ or less. If the maximum particle size exceeds 30 μm, it will cause streaks in the applied paste when forming a thin film that will become the skin layer. The natural leather fine powder 4 preferably has a maximum particle size of 20 μm or less.
天然皮革微粉末４は表皮層３を構成するポリウレタン樹
脂に対し５０重景％を超える量を添加すると分散性が低
下し、て表皮層３の強度低下を招く虞れがあるため、５
０〜１０重量％が好ましく、特に３０〜２０重景％が好
ましい。If the natural leather fine powder 4 is added in an amount exceeding 50% to the polyurethane resin constituting the skin layer 3, the dispersibility will decrease, which may lead to a decrease in the strength of the skin layer 3.
0 to 10% by weight is preferred, particularly 30 to 20% by weight.
第２図は基材２と表皮層３との間に湿式法によって形成
したポリウレタン樹脂の微多孔層５を設りた合成皮革Ｉ
を示し、このような微多孔層５を設は乙と柔軟性が向上
し更に天然皮革に類似した感触を有する合成皮革となる
。上記微多孔層５は基材２表向に親水性有機溶媒（例え
ばＤＭＦ等）に）審問したポリウレタン樹脂を塗布した
後に水中に浸漬して脱溶媒し、ポリウレタン樹脂を凝固
させろことによって形成することができる。また湿式法
に、Ｊ、って形成した微多孔層５のかわりに乾式法によ
って形成したポリウレタン樹脂の発泡体層を設りてもよ
い。Figure 2 shows synthetic leather I with a microporous layer 5 of polyurethane resin formed by a wet method between the base material 2 and the skin layer 3.
By providing such a microporous layer 5, the resulting synthetic leather has improved flexibility and has a feel similar to natural leather. The microporous layer 5 is formed by applying a polyurethane resin mixed with a hydrophilic organic solvent (such as DMF) onto the surface of the base material 2, then immersing it in water to remove the solvent, and solidifying the polyurethane resin. I can do it. Further, in place of the microporous layer 5 formed by the wet method, a polyurethane resin foam layer formed by the dry method may be provided.
本発明の合成皮革１は第３図に示ずようにシボ（′、１
き離型紙６のシホ面に、天然皮革微わ）末を含有する表
皮層形成用ポリウレタン樹脂の溶液を塗布し７て１クタ
ーナイフ７等によって均一厚さとした後、加熱オーフン
８中で乾燥させて表皮層を形成し、次いて基体９（基材
２単体又は基材２の表面層こ微多孔層５を設けたもの）
と重ね合わせて加熱ロール１０によちて加熱して両者を
熱圧着し更に加熱オーブン１１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６を剥離することに
より表皮層３を基体９に転写して得ることができる。上
記表皮層形成用ポリウレタン樹脂の溶液としては例えば
、天然皮革微粉末を含有するポリウレタン樹脂の有機溶
媒溶液か用いられる。ポリウレタン表皮層３の着色の目
的で表皮層３中又は必要により表皮層３の接着の目的で
設置Ｊられる接着剤層中に頗料、染料等の着色剤を添加
することができる。尚、表皮層３中には天然皮革微粉末
４が含有されているため、表皮層３を構成するウレタン
樹脂か染料によって染色不可能である場合でも、天然皮
革微粉末４が染料によって染色され、表皮層３の染料に
よる着色が可能である。表皮層３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。The synthetic leather 1 of the present invention has grains (', 1
A solution of a polyurethane resin for forming a skin layer containing fine powder of natural leather is applied to the grain side of the release paper 6, and the thickness is made uniform with a knife 7 or the like, and then dried in a heated oven 8. to form a skin layer, and then a substrate 9 (substrate 2 alone or a surface layer of substrate 2 provided with microporous layer 5).
The skin layer 3 is layered by heating with a heating roll 10 to bond them together by thermocompression, passing through a heating oven 11 to completely volatilize the remaining solvent, and then peeling off the release paper 6 to form the skin layer 3. It can be obtained by transferring it to the substrate 9. As the solution of the polyurethane resin for forming the skin layer, for example, an organic solvent solution of the polyurethane resin containing fine natural leather powder is used. A coloring agent such as a paint or a dye can be added to the polyurethane skin layer 3 for the purpose of coloring it or, if necessary, to an adhesive layer installed for the purpose of adhering the skin layer 3. In addition, since the natural leather fine powder 4 is contained in the skin layer 3, even if the urethane resin constituting the skin layer 3 cannot be dyed with the dye, the natural leather fine powder 4 can be dyed with the dye. It is possible to color the epidermal layer 3 with a dye. Other additives such as various stabilizers and fillers may also be added to the skin layer 3 if necessary.
尚、乾式法によるポリウレタン樹脂の発泡体層を設ける
場合、シボ付き離型紙６に表皮層を形成した後、表皮層
側に発泡性ポリウレタン樹脂を塗布して発泡させ、次い
で基体９（この場合の基体は通常１単体）と重ね合わせ
て加熱圧着し、次いで離型紙６を！、１１離することに
よって基材２と表皮層３との間に乾式法によって形成し
た発泡体層を存する合成皮革１を得ることかできる。In addition, when forming a foam layer of polyurethane resin by a dry method, after forming a skin layer on the textured release paper 6, foamable polyurethane resin is applied to the skin layer side and foamed, and then the base material 9 (in this case The base is usually a single piece) and heat-pressed, then release paper 6 is applied! , 11, it is possible to obtain a synthetic leather 1 having a foam layer formed by a dry process between the base material 2 and the skin layer 3.
天然皮革微粉末４を含有するポリウレタン樹脂よりなる
表皮層３の表面には第４図に示すように更に粒径３０μ
以下の天然皮革微粉末４を含有ずろポリウレタン４Ｒ＋
脂による表面処理層１２を設けることかできる。この表
面処理層１２は天然皮革微粉末を含ＹＩＪるポリウレタ
ン樹脂溶液をグラヒアコ−１・法等によって、乾燥時の
塗布量が１〜５ｇ／＋ｒｒ程度となるように塗布乾燥し
て形成することかできる。この表面処理層１２を形成す
るために用いる天然皮革微粉末を含有するポリウレタン
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１４１ボリウレクン樹脂、アミノ変性ポリウレタン
手・１１脂、ポリアミＩ・変性ポリウレタン樹脂等か用
いられる。天然皮革粉末を含有する表面層３の表面に更
に天然皮革微粉末を含有する表面処理層１２を設けると
、表面の感触を更に天然皮革の感触に類似さ−ヒるごと
ができる。On the surface of the skin layer 3 made of polyurethane resin containing fine natural leather powder 4, as shown in FIG.
Zero polyurethane 4R+ containing the following natural leather fine powder 4
A surface treatment layer 12 made of oil may be provided. This surface treatment layer 12 may be formed by coating and drying a YIJ polyurethane resin solution containing fine natural leather powder using the Grahiaco-1 method or the like so that the coating amount when dry is approximately 1 to 5 g/+rr. can. The polyurethane resin solution containing natural leather fine powder used to form this surface treatment layer 12 includes, in addition to ordinary polyurethane resins, silicone-modified polyurethane resin, amino-modified polyurethane resin, and polyamide-I modified polyurethane resin. etc. is used. By further providing a surface treatment layer 12 containing fine natural leather powder on the surface of the surface layer 3 containing natural leather powder, the feel of the surface can be made to resemble that of natural leather.
尚、第４図においては第１図に示す合成皮革１の表皮層
３の表面に表面処理層を設けた場合を示したが、第２図
に示すような微多孔層５を設けた合成皮革の表皮層３の
表面に表面処理層１２を設けてもよく、また特に図示し
ていないが微多孔層５のかわりに乾式法によって形成し
た発泡体層を有する合成皮革の表皮層の表面に表面処理
層１２を設けることもできる。Although FIG. 4 shows a case in which a surface treatment layer is provided on the surface of the skin layer 3 of the synthetic leather 1 shown in FIG. 1, synthetic leather provided with a microporous layer 5 as shown in FIG. A surface treatment layer 12 may be provided on the surface of the skin layer 3 of synthetic leather, and although not particularly shown, a surface treatment layer 12 may be provided on the surface of the skin layer of synthetic leather having a foam layer formed by a dry process instead of the microporous layer 5. A treatment layer 12 may also be provided.
以下、具体的実施例を挙げて本発明を更に訂細に説明す
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、粒径５μ〜１５μの天然皮革
微粉末を２５重量％含有する１００％モジュラスが７０
ｋｇ／ｃｆｆｌのポリウレタン樹脂（ポリエステル系ポ
リウレタン、大日本インキ製、クリスポンＮＢ−６３１
３）の２０％ＤＭＦ、、ＭＥＫ溶液を乾燥時の厚さが３
０μとなるように塗布して乾燥させ表皮層を形成した。Example 1 The surface of the textured release paper contains 25% by weight of natural leather fine powder with a particle size of 5 μm to 15 μm, and the 100% modulus is 70.
kg/cffl polyurethane resin (polyester polyurethane, manufactured by Dainippon Ink, Crispon NB-631
3) 20% DMF, MEK solution with a dry thickness of 3
It was applied to a thickness of 0μ and dried to form a skin layer.
次いでこの表皮層上に２版型ポリウレタン接着剤を目（
＝Ｊ量１４０ｇ／ ｒｄで塗布した後、綿起毛布（基材
）の起毛面と貼合わせ、加熱乾燥して接着剤を固化させ
、次いで離型紙を剥離して合成皮革を得た。Next, apply a 2-plate polyurethane adhesive onto this skin layer (
=J amount of 140 g/rd, the adhesive was laminated to the raised surface of a cotton raised cloth (base material), heated and dried to solidify the adhesive, and then the release paper was peeled off to obtain synthetic leather.
得られた合成皮革は風合、外観において天然皮革に酷似
し、且つ表面感触も天然皮革様の１・−ライタンチを有
し、寒冷時に触れた時でも表面が温もり感を有していた
。The resulting synthetic leather closely resembled natural leather in texture and appearance, and had a surface feel of 1.-lithium tantalum similar to natural leather, and the surface felt warm even when touched in cold weather.
実施例２
実施例１で得た合成皮革の表皮層の上に、更に粒径５μ
〜１５μの天然皮革微粉末を２０重量％含有するポリウ
レタン樹脂（ポリエステル系ポリウレタン、１００％モ
ジ１ラス１．４０ ｋｇ／ｃ苗、大Ｉ］精化製、レザロ
イｌ” Ｌ ｕ −１５００）の１２％１）ＭＦ、Ｍｌ
凡１〈）容液をグラビアコート法によって乾燥時の厚さ
が２μとなるように塗布して乾燥させ′（表面処理層を
形成した。この合成皮革は更に天然皮革に近い表面触感
を有していた。Example 2 On the skin layer of the synthetic leather obtained in Example 1, a particle size of 5 μm was added.
12 of polyurethane resin (polyester polyurethane, 100% Moji 1 las 1.40 kg/c seedlings, Dai I] Seika Co., Ltd., Rezalo I" Lu-1500) containing 20% by weight of fine natural leather powder of ~15μ %1) MF, Ml
1.) The solution was applied using a gravure coating method to a dry thickness of 2 μm and dried (a surface treatment layer was formed). This synthetic leather also had a surface texture similar to that of natural leather. was.
実施例３
実施例１て用いた起毛布の起毛面に、１００％モジュラ
スが４０ｋｇ／−のポリウレタン樹脂（ポリエステル系
ポリウレタン、大日本インキ製、クリスボンＭ Ｐ−８
２３）の１３％ＤＭＦ）容液を目（’Ｊ量９０ ［）
Ｂ ／ ｎｒとなるように塗布した後、水中に浸油して
ポリウレタン樹脂を湿式凝固して微多孔層を形成した。Example 3 Polyurethane resin (polyester polyurethane, manufactured by Dainippon Ink, Crisbon MP-8) with a 100% modulus of 40 kg/- was applied to the raised surface of the raised fabric used in Example 1.
23) 13% DMF) solution ('J amount 90 [)]
After coating to give B/nr, the polyurethane resin was wet coagulated by immersion in water to form a microporous layer.
ごの微多孔層面に実施例１と同様にして表皮層及び接着
剤層を形成した離型紙を重ね合わせて加熱して圧着し、
更に接着剤を加熱固化せしめた後、離型紙を剥離して合
成皮革を得た。得られた合成皮革は風合、外観において
天然皮革に酷似し、且つ表面感触も天然皮革様のドライ
タッチを有し、寒冷時に触れた時でも表面が温もり感を
有するとともに、更に皮革の柔軟性が向に し ノこ。A release paper on which a skin layer and an adhesive layer were formed in the same manner as in Example 1 was superimposed on the microporous layer surface of the iron, heated and pressed,
After further heating and solidifying the adhesive, the release paper was peeled off to obtain synthetic leather. The resulting synthetic leather closely resembles natural leather in texture and appearance, has a dry touch on the surface similar to natural leather, has a warm feeling even when touched in cold weather, and has the flexibility of leather. Shinoko is on the other side.
比較例１
天然皮革粉末として粒径５０μ〜６０μのものを用いた
他は実施例１と同様にして合成皮革を得た。得られた皮
革は表面感触（ドライタッチ、温もり感）に劣り、また
ポリウレタン表皮層作成時にスジ引が発生し、正常作業
ができなかった。Comparative Example 1 Synthetic leather was obtained in the same manner as in Example 1, except that natural leather powder having a particle size of 50 μm to 60 μm was used. The resulting leather had poor surface feel (dry touch, warm feeling), and streaks occurred during the preparation of the polyurethane skin layer, making normal work impossible.
以上説明したように本発明の合成皮革は基材の表面に粒
径３０μ以下の天然皮革微粉末を含有するポリウレタン
樹脂の表皮層を設けたことにより、ドライタッチで寒冷
時でも温もりを感じる天然皮革様の表面感触を有し、且
つ外観、風合においてもきわめて天然皮革に類似した合
成皮革である。As explained above, the synthetic leather of the present invention has a surface layer of polyurethane resin containing natural leather fine powder with a particle size of 30μ or less on the surface of the base material, so it is a natural leather that is dry to the touch and feels warm even in cold weather. It is a synthetic leather that has a similar surface feel and is very similar in appearance and feel to natural leather.
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
孔層又は乾式法によって形成した発泡体層を設りると柔
軟性を更に向トすることができる。Furthermore, flexibility can be further improved by providing a microporous layer formed by a wet method or a foam layer formed by a dry method between the skin layer and the base material.
更に表皮層の上に天然皮革微粉末を含有するポリ・１ル
タン樹脂よりなる表面処理層を設けると、更に表面の触
感を向上することができる。しかも本発明の合成皮革は
粒径が３０μ以下という微粉状の天然皮革わ〕末を用い
、しかもこの天然皮革微粉末を皮革全体に分散さ−Ｕる
こよなく表皮層又は表皮層と表面処理層にのみに含有さ
せたことにより、天然皮革微わ〕末の添加量が少なくて
も優れた触感を付与でき、また皮革の強度等の物性を低
下させるごとがない等の効果を有する。Furthermore, if a surface treatment layer made of poly-1 ruthane resin containing fine natural leather powder is provided on the skin layer, the tactile feel of the surface can be further improved. Moreover, the synthetic leather of the present invention uses finely powdered natural leather powder with a particle size of 30μ or less, and furthermore, this fine natural leather powder is dispersed throughout the leather - thoroughly applied to the epidermis layer or the epidermis layer and the surface treatment layer. By including it only in the natural leather powder, it is possible to impart an excellent feel even if the amount of natural leather powder is small, and it has the effect that it does not reduce the physical properties such as the strength of the leather.
図面４Ｊ木発明の一実施例を示し、第１図は本発明の合
成皮革の一実施例を示す縦断面図、第２図は暴利と表皮
層との間に微多孔層を設けた本発明の合成皮革の縦断面
図、第３図は本発明の合成皮革の製造方法の一例を示す
工程図、第４図は表皮層の表面に更に表面処理層を設け
た本発明の合成皮革の縦断面図である。
■・・・合成皮革 ２・・・基材 ３・・・表皮層 ４
・・・天然皮革微粉末 訃・・微多孔層 １２・・・表
面処理層Drawing 4J shows an embodiment of the invention; Fig. 1 is a longitudinal sectional view showing an embodiment of the synthetic leather of the invention; Fig. 2 shows the synthetic leather of the invention in which a microporous layer is provided between the profiteering layer and the skin layer. FIG. 3 is a process diagram showing an example of the method for manufacturing the synthetic leather of the present invention, and FIG. 4 is a longitudinal cross-sectional view of the synthetic leather of the present invention in which a surface treatment layer is further provided on the surface of the skin layer. It is a front view. ■...Synthetic leather 2...Base material 3...Skin layer 4
...Natural leather fine powder ...Microporous layer 12...Surface treatment layer
Claims (4)
含有するポリウレタン樹脂よりなる表皮層が積層一体化
されていることを特徴とする合成皮革。(1) Synthetic leather characterized in that a skin layer made of a polyurethane resin containing fine natural leather powder with a particle size of 30 μm or less is laminated and integrated on one side of a base material.
一体化され、更にその表面に粒径３０μ以下の天然皮革
微粉末を含有するポリウレタン樹脂よりなる表皮層が積
層一体化されていることを特徴とする合成皮革。(2) A microporous layer of polyurethane resin is laminated and integrated on one side of the base material, and a skin layer made of polyurethane resin containing fine natural leather powder with a particle size of 30μ or less is further laminated and integrated on the surface. Synthetic leather characterized by
一体化され、更にその表面に粒径３０μ以下の天然皮革
微粉末を含有するポリウレタン樹脂よりなる表皮層が積
層一体化されていることを特徴とする合成皮革。(3) A foam layer of polyurethane resin is laminated and integrated on one side of the base material, and a skin layer made of polyurethane resin containing fine natural leather powder with a particle size of 30μ or less is further laminated and integrated on the surface. Synthetic leather characterized by
て、表皮層の表面に更に粒径３０μ以下の天然皮革微粉
末を含有するポリウレタン樹脂により表面処理層を設け
たことを特徴とする合成皮革。(4) The synthetic leather according to any one of claims 1 to 3, further comprising a surface treatment layer made of a polyurethane resin containing fine natural leather powder with a particle size of 30 μm or less on the surface of the skin layer. Synthetic leather.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14082788A JPH01314789A (en) | 1988-06-08 | 1988-06-08 | Synthetic leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14082788A JPH01314789A (en) | 1988-06-08 | 1988-06-08 | Synthetic leather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01314789A true JPH01314789A (en) | 1989-12-19 |
Family
ID=15277642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14082788A Pending JPH01314789A (en) | 1988-06-08 | 1988-06-08 | Synthetic leather |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01314789A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5534327A (en) * | 1990-05-11 | 1996-07-09 | Idemitsu Petrochemical Co., Ltd. | Powdered leather and method of producing the same |
| KR100890369B1 (en) * | 2007-06-14 | 2009-03-25 | 김지형 | Artificial leather manufacturing method using powdered natural leather |
| CN102492283A (en) * | 2011-12-01 | 2012-06-13 | 陈华 | Mixed resin capable of producing derma effects and used for synthetic leather and preparation method thereof |
| CN103469590A (en) * | 2012-06-06 | 2013-12-25 | 上海日多高分子材料有限公司 | Method for making waterborne surface treatment agent by replacing solvent polyurethane resin with waterborne polyurethane resin |
| CN104480740A (en) * | 2014-10-23 | 2015-04-01 | 合肥金伶俐服饰有限公司 | Polyurethane synthetic leather for imitated leather clothes and production method thereof |
| IT202200009125A1 (en) * | 2022-05-04 | 2023-11-04 | Carlo Andrea Borsani | ARTIFICIAL LEATHER AND PROCEDURE FOR THE PRODUCTION OF ARTIFICIAL SKIN |
-
1988
- 1988-06-08 JP JP14082788A patent/JPH01314789A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5534327A (en) * | 1990-05-11 | 1996-07-09 | Idemitsu Petrochemical Co., Ltd. | Powdered leather and method of producing the same |
| KR100890369B1 (en) * | 2007-06-14 | 2009-03-25 | 김지형 | Artificial leather manufacturing method using powdered natural leather |
| CN102492283A (en) * | 2011-12-01 | 2012-06-13 | 陈华 | Mixed resin capable of producing derma effects and used for synthetic leather and preparation method thereof |
| CN103469590A (en) * | 2012-06-06 | 2013-12-25 | 上海日多高分子材料有限公司 | Method for making waterborne surface treatment agent by replacing solvent polyurethane resin with waterborne polyurethane resin |
| CN104480740A (en) * | 2014-10-23 | 2015-04-01 | 合肥金伶俐服饰有限公司 | Polyurethane synthetic leather for imitated leather clothes and production method thereof |
| IT202200009125A1 (en) * | 2022-05-04 | 2023-11-04 | Carlo Andrea Borsani | ARTIFICIAL LEATHER AND PROCEDURE FOR THE PRODUCTION OF ARTIFICIAL SKIN |
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