JPH086261B2 - Synthetic leather manufacturing method - Google Patents
Synthetic leather manufacturing methodInfo
- Publication number
- JPH086261B2 JPH086261B2 JP62080805A JP8080587A JPH086261B2 JP H086261 B2 JPH086261 B2 JP H086261B2 JP 62080805 A JP62080805 A JP 62080805A JP 8080587 A JP8080587 A JP 8080587A JP H086261 B2 JPH086261 B2 JP H086261B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- synthetic leather
- resin
- foam
- foam layer
- 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
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
- D06N3/005—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by blowing or swelling agent
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Laminated Bodies (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は合成皮革の製造方法に関し、詳しくは、発泡
層が極めて軽量でありながら、大きい層間強度を有する
合成皮革を所謂乾式法にて製造する方法に関する。Description: FIELD OF THE INVENTION The present invention relates to a method for producing synthetic leather, and more specifically, a method for producing synthetic leather having a very light foam layer and high interlaminar strength by a so-called dry method. Regarding
従来の技術 従来、合成皮革の製造方法として、湿式法と乾式法と
が知られている。このうち、乾式法とは、先ず、離型紙
上に表皮層を形成する樹脂を塗布乾燥させ、その上に樹
脂と発泡剤とを含有する樹脂組成物を塗布し、加熱し
て、発泡剤の分解によつて発生したガスにて発泡セルを
形成させて、発泡層を形成し、更に、接着剤にて基布を
接着した後、離型紙を剥離することによつて製造する方
法である。例えば、発泡層を形成する樹脂として、ポリ
塩化ビニルペーストレンジを用いる場合は、レジン100
重量部に対して、可塑剤60〜100重量部及びアゾジカー
ボンアミドのような発泡剤２〜５重量部を含む発泡性樹
脂組成物を加熱して、発泡層を形成させる。2. Description of the Related Art Conventionally, a wet method and a dry method are known as methods for producing synthetic leather. Among them, the dry method, first, a resin for forming a skin layer is applied and dried on a release paper, a resin composition containing a resin and a foaming agent is applied thereon, and heated to form a foaming agent. This is a method in which foamed cells are formed by the gas generated by decomposition, a foamed layer is formed, the base cloth is bonded with an adhesive, and then the release paper is peeled off. For example, when using a polyvinyl chloride paste range as the resin forming the foam layer, the resin 100
A foaming resin composition containing 60 to 100 parts by weight of a plasticizer and 2 to 5 parts by weight of a foaming agent such as azodicarbonamide is heated to form a foam layer.
しかし、このような乾式法によつては、従来、軽量の
発泡層を有する合成皮革を得ることが困難である。特
に、樹脂として、ポリ塩化ビニルペーストレジンを用い
る場合は、その比重が大きいために、得られる合成皮革
が重く、しかも、上記のように、可塑剤を多量に用いる
必要があるために、所謂ぼつてりした感触及び外観を有
する。他方、発泡層を軽量化するために、発泡セルによ
る空隙率を高めるときは、発泡剤の加熱発泡に際して、
ガス抜けが起こつて、発泡層が所謂へたりを起こす。However, it has been conventionally difficult to obtain a synthetic leather having a lightweight foam layer by such a dry method. In particular, when a polyvinyl chloride paste resin is used as the resin, the resulting synthetic leather is heavy due to its large specific gravity, and, as described above, it is necessary to use a large amount of plasticizer. It has a dry feel and appearance. On the other hand, to increase the porosity of the foam cells in order to reduce the weight of the foam layer, when heating and foaming the foaming agent,
Outgassing occurs and the foamed layer causes so-called sag.
発明が解決しようとする問題点 そこで、本発明者は、従来の合成皮革における上記し
た問題を解決するために鋭意研究した結果、従来の発泡
剤に代えて、熱膨張性マイクロカプセルを含む樹脂混合
物を用い、これを加熱発泡させることによつて、乾式法
にても、湿式法と同等の軽量の発泡層を形成し得ること
を既に見出している（特願昭61−181642号明細書）。し
かし、このようにして得られる合成皮革は、その発泡層
の層間強度が1.0kg/cm程度であつて、用途によつては、
一層大きい層間強度が要求されている。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention Therefore, as a result of intensive research for solving the above-mentioned problems in conventional synthetic leather, the present inventor has found that instead of a conventional foaming agent, a resin mixture containing thermally expandable microcapsules is used. It has already been found that a light-weight foam layer equivalent to that of the wet method can be formed by heat-foaming the same with a dry method (Japanese Patent Application No. 61-181642). However, the synthetic leather thus obtained has an interlayer strength of the foam layer of about 1.0 kg / cm, and depending on the application,
Greater interlayer strength is required.
そこで、本発明者らは、かかる問題を解決するために
鋭意研究した結果、特に、マイクロカプセルを二液性ウ
レタン樹脂接着剤との混合物となし、これを基布として
の起毛布の起毛面に含浸させ、加熱して、マイクロカプ
セルを発泡させると共に、ウレタン樹脂接着剤を硬化さ
せ、かくして、発泡層中に起毛を接着固定すると共に、
膨張発泡したマイクロカプセルをも発泡層中に接着固定
することによつて、極めて軽量でありながら、層間強度
を大幅に改善した発泡を得ることができることを見出し
て、本発明に至つたものである。Therefore, the inventors of the present invention have conducted extensive studies in order to solve such a problem. As a result, in particular, a microcapsule is formed as a mixture with a two-component urethane resin adhesive, which is used as a base cloth on a raised surface of a raised cloth. While impregnating and heating, the microcapsules are foamed, and the urethane resin adhesive is hardened, thus fixing and raising the nap in the foam layer,
By adhering the expanded and expanded microcapsules also in the foamed layer by adhesion, it has been found that foaming with significantly improved interlayer strength can be obtained while being extremely lightweight, which led to the present invention. .
問題点を解決するための手段 本発明による合成皮革の製造方法は、基布の上に樹脂
発泡層及び表皮層が積層されてなる合成皮革の製造方法
において、基布としての起毛布上にウレタン樹脂接着剤
と平均粒径５〜50μｍの熱膨張性マイクロカプセルとを
含む混合物を含浸させ、混合物を加熱して、層中に起毛
を含む発泡層を形成すると共に、マイクロカプセルを発
泡層中に接着固定することを特徴とする。Means for Solving the Problems A method for producing synthetic leather according to the present invention is a method for producing synthetic leather in which a resin foam layer and a skin layer are laminated on a base cloth, and urethane is provided on a raised cloth as a base cloth. A mixture containing a resin adhesive and heat-expandable microcapsules having an average particle size of 5 to 50 μm is impregnated, and the mixture is heated to form a foamed layer containing naps in the layer, and the microcapsules in the foamed layer. It is characterized by being adhesively fixed.
本発明において基布として用いる起毛布は、好ましく
は長さ400〜1100μｍを長さの起毛を有し、本発明によ
れば、起毛布の原撚糸層まで、起毛を含んで、発泡層を
形成させる。このようにして、樹脂混合物を起毛布に含
浸させた後、マイクロカプセルを発泡させると共に、二
液性ウレタン樹脂を硬化させることによつて、起毛布の
原撚糸層まで起毛を含む発泡層を形成させることができ
る。The napped cloth used as the base cloth in the present invention preferably has naps having a length of 400 to 1100 μm, and according to the present invention, the woven cloth is formed up to the original twisted yarn layer of the napped cloth to form a foamed layer. Let In this way, after the resin mixture is impregnated into the raised fabric, the microcapsules are foamed and the two-component urethane resin is cured to form a foamed layer including raised fabric up to the original twisted yarn layer of the raised fabric. Can be made.
この後、発泡層をバフイング等の適宜手段によつて表
面を平滑にし、この上に接着剤を介して、表皮層を接着
すれば、本発明による合成皮革を得ることができる。After that, the surface of the foamed layer is smoothed by an appropriate means such as buffing, and the skin layer is adhered onto the foamed layer via an adhesive to obtain the synthetic leather of the present invention.
第１図は、このようにして得られる本発明による合成
皮革の断面図を示し、起毛１を有する起毛布２を基布と
して、その原撚糸層３まで起毛を含む発泡層４が形成さ
れ、この発泡層が接着剤層５を介して、表皮層６に接着
されている。特に、限定されるものではないが、このよ
うにして形成される合成皮革においては、起毛布の原撚
糸層の厚さが100μｍ程度、発泡層の厚さが700μｍ程
度、接着剤層の厚さ及び表皮層の厚さがいずれも20〜30
μｍ程度であるのが好適である。FIG. 1 shows a cross-sectional view of the synthetic leather according to the present invention thus obtained, in which a raised fabric 2 having raised fabric 1 is used as a base fabric, and a foam layer 4 including raised fabric is formed up to the original twisted yarn layer 3. This foam layer is adhered to the skin layer 6 via the adhesive layer 5. Although not particularly limited, in the synthetic leather thus formed, the thickness of the original twisted yarn layer of the raised fabric is about 100 μm, the thickness of the foamed layer is about 700 μm, and the thickness of the adhesive layer. And the thickness of the skin layer is 20-30
It is preferably about μm.
本発明においては、発泡層を形成するウレタン樹脂接
着剤としては、特に、二液性ウレタン樹脂接着剤好まし
く用いられる。これによつて、起毛布の起毛とマイクロ
カプセルの発泡体を発泡層中に特に強固に接着固定し得
るので、発泡層の層間強度が大幅に改善される。In the present invention, a two-component urethane resin adhesive is particularly preferably used as the urethane resin adhesive forming the foam layer. As a result, the raised fabric of the raised fabric and the foam of the microcapsules can be bonded and fixed particularly firmly in the foam layer, so that the interlayer strength of the foam layer is significantly improved.
熱膨張性マイクロカプセルは、上記二液性ウレタン樹
脂接着剤との樹脂混合物において、１〜10重量％、好ま
しくは、１〜５重量％の範囲で含有される。尚、樹脂混
合物は、必要に応じて、充填剤、酸化防止剤、着色剤等
の通常の配合剤を適宜量含有していてもよい。The heat-expandable microcapsules are contained in the resin mixture with the two-component urethane resin adhesive in an amount of 1 to 10% by weight, preferably 1 to 5% by weight. Incidentally, the resin mixture may contain an appropriate amount of a usual compounding agent such as a filler, an antioxidant and a colorant, if necessary.
本発明において用いる熱膨張性マイクロカプセルと
は、熱軟化性樹脂の殻壁とし、内部にブタン等の炭化水
素のような低沸点有機化合物を含むマイクロカプセルを
意味し、例えば、松本油脂製薬（株）から「マツモトマ
イクロスフエアー」として、平均粒径や殻壁の熱軟化温
度の種々異なるものが市販されている。本発明において
は、特に、平均粒径５〜50μｍである熱膨張性マイクロ
カプセルが好ましく用いられる。殻壁の熱軟化温度は、
用いる二液性ウレタン樹脂接着剤の硬化温度によもよる
が、通常、100〜200℃の範囲にあるあるものが好まし
い。The heat-expandable microcapsules used in the present invention means a microcapsule containing a low-boiling organic compound such as a hydrocarbon such as butane as a shell wall of a thermosoftening resin, and for example, Matsumoto Yushi-Seiyaku Co., Ltd. ), "Matsumoto Microspheres" having various average particle diameters and thermal softening temperatures of shell walls are commercially available. In the present invention, heat-expandable microcapsules having an average particle size of 5 to 50 μm are particularly preferably used. The thermal softening temperature of the shell wall is
Although it depends on the curing temperature of the two-component urethane resin adhesive used, it is usually preferably in the range of 100 to 200 ° C.
本発明の方法によれば、合成皮革の製造工程におい
て、かかる熱膨張性マイクロカプセルは、加熱によつ
て、その殻壁が熱軟化すると共に、内部の低沸点化合物
が膨張し、次いで、冷却する過程で殻壁が再凝固して、
微細な独立セルからなる均質な発泡層が形成される。According to the method of the present invention, in the manufacturing process of synthetic leather, such a heat-expandable microcapsule has its shell wall thermally softened by heating, and the low boiling point compound inside expands, and then cools. In the process, the shell wall re-solidifies,
A homogeneous foam layer consisting of fine closed cells is formed.
例えば、従来のポリ塩化ビニルペーストレジンを樹脂
として用いる乾式法によれば、発泡剤を分解して生じる
ガスを樹脂のマトリツクス内に内包させることによつ
て、発泡層を形成する。従つて、マトリツクスとしての
樹脂は、これを比較的多量に用いることが必要とされる
ので、発泡層の密度は、通常、0.3〜0.5g/cm3であつ
て、湿式法で得られる発泡層の密度0.1〜0.4g/cm3に比
べて著しく大きい。For example, according to a dry method using a conventional polyvinyl chloride paste resin as a resin, a foam layer is formed by including a gas generated by decomposing a foaming agent in a matrix of the resin. Therefore, since the resin as a matrix needs to be used in a relatively large amount, the density of the foam layer is usually 0.3 to 0.5 g / cm 3, and the foam layer obtained by the wet method is The density is significantly higher than that of 0.1-0.4 g / cm 3 .
しかしながら、本発明の方法によれば、前記した樹脂
混合物を加熱することによつて、熱膨張性マイクロカプ
セルの殻壁が軟化膨張し、相互に融着し、冷却の過程で
殻壁が凝固して、発泡層を形成するので、樹脂は、膨張
したマイクロカプセルを相互に接合するバインダーとし
ての量があれば足りることとなり、従つて、本発明の方
法によれば、従来の乾式法に比べて、用いる樹脂量を大
幅に低減することができる。更に、発泡セルは、膨張し
たマイクロカプセルによつて形成されるから、かかる発
泡セルは、独立した微細な球状であり、且つ、均質であ
り、その結果、従来、乾式法によつては得ることが困難
であつた軽量な発泡層を得ることができる。However, according to the method of the present invention, by heating the above-mentioned resin mixture, the shell walls of the heat-expandable microcapsules are softened and expanded, fused to each other, and solidified in the process of cooling. Therefore, since the foam layer is formed, the resin only needs to have an amount as a binder for bonding the expanded microcapsules to each other, and therefore, according to the method of the present invention, compared with the conventional dry method. The amount of resin used can be greatly reduced. Furthermore, since the foam cells are formed by the expanded microcapsules, such foam cells are independent fine spheres and are homogeneous, and as a result, are conventionally obtainable by the dry method. It is difficult to obtain a lightweight foam layer.
本発明によれば、通常、発泡セル径が実質的に30〜10
0μｍ、セル密度が7000〜13000個/cm2、密度が0.1〜0.4
g/cm3であつて、極めて軽量でありながら、層間強度が
1.5〜2.0kg/cm又はそれ以上に大きい発泡層を有する合
成皮革を得ることができる。尚、ここに、セル数密度と
は、発泡構造の単位断面において、発泡セルが占める数
をいう。According to the present invention, the foamed cell diameter is generally substantially 30 to 10
0 μm, cell density 7000 to 13000 cells / cm 2 , density 0.1 to 0.4
It's g / cm 3 , and it's extremely lightweight, but the interlayer strength is
It is possible to obtain synthetic leather having a foam layer having a large size of 1.5 to 2.0 kg / cm or more. Here, the cell number density means the number occupied by the foam cells in the unit cross section of the foam structure.
発明の効果 以上のように、本発明による合成皮革によれば、発泡
層中に起毛と膨張したマイクロカプセルが接着剤によつ
て接着固定されているので、発泡層は、極めて軽量であ
りながら、通常、1.5kg/cm以上の大きい層間強度を有
し、例えば、スポーツ・シユーズの胛被としても好適に
用いることができる。Effects of the Invention As described above, according to the synthetic leather of the present invention, since the raised and expanded microcapsules are adhesively fixed in the foam layer by the adhesive, the foam layer is extremely lightweight, Usually, it has a large interlayer strength of 1.5 kg / cm or more, and can be suitably used, for example, as a cover for sports shoes.
しかも、本発明の方法によつて得られる発泡セルは、
独立した微細な球状であり、且つ、均質であるので、風
合にもすぐれる。Moreover, the foamed cells obtained by the method of the present invention,
Independent fine sphere shape and homogeneity, it has excellent texture.
実施例 以下に実施例を挙げて本発明を説明するが、本発明は
これら実施例により何ら限定されるものではない。EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to these examples.
尚、以下において、二液性ウレタン樹脂接着剤とし
て、「レザミンUD−603」及び「レザミンUD−750SA」
（共に、大日精化（株）製）をポリオール成分とし、こ
れにイソシアネート成分「UD架橋剤」及びアミンを主成
分とする架橋促進剤「UD−102A」（共に、大日精化
（株）製）を用いた。また、部数は重量部を示す。In the following, as a two-component urethane resin adhesive, "Resamine UD-603" and "Resamine UD-750SA"
(Both manufactured by Dainichiseika Co., Ltd.) as a polyol component, and an isocyanate component "UD crosslinker" and a crosslinking accelerator "UD-102A" containing amine as a main component (both manufactured by Dainichiseika Co., Ltd.) ) Was used. Further, the number of parts indicates parts by weight.
実施例１ レザミンUD−603 100部 UD架橋剤 ８部 UD−102A ８部 マイクロカプセルF80D（松本油脂製薬（株）製、殻壁軟
化温度140〜145℃） ４部 からなる樹脂混合物をナイフコーターにて起毛布に塗布
し、170℃で１分間加熱し、樹脂を硬化させると共に、
マイクロカプセルを膨張させ、冷却して、発泡層を形成
した。Example 1 Resamine UD-603 100 parts UD cross-linking agent 8 parts UD-102A 8 parts Microcapsule F80D (manufactured by Matsumoto Yushi-Seiyaku Co., Ltd., shell wall softening temperature 140-145 ° C.) 4 parts A resin mixture in a knife coater. And apply it to a raised cloth and heat at 170 ° C for 1 minute to cure the resin and
The microcapsules were expanded and cooled to form a foam layer.
別に、離型紙上にポリウレタン樹脂溶液（大日精化
（株）、レザミン2825LP）を厚さ10μｍに塗布し、100
℃で２分間加熱乾燥し、この後、この離型紙を上記発泡
層上に貼り合わせ、170℃で１分間加熱し、冷却させた
後、離型紙を剥離して、合成皮革を得た。Separately, apply a polyurethane resin solution (Resamine 2825LP, Dainichiseika Co., Ltd.) to a thickness of 10 μm on the release paper, and apply 100
After heat-drying at 2 ° C. for 2 minutes, this release paper was laminated on the foam layer, heated at 170 ° C. for 1 minute, cooled, and then the release paper was peeled off to obtain a synthetic leather.
得られた合成皮革は、発泡セル径50〜70μｍ、セル数
密度10000〜12000個/cm2、比重0.33g/cm3、層間強度2.0
kg/cmであつた。The obtained synthetic leather has a foam cell diameter of 50 to 70 μm, a cell number density of 10000 to 12000 cells / cm 2 , a specific gravity of 0.33 g / cm 3 , and an interlayer strength of 2.0.
It was kg / cm.
実施例２ 実施例１において、樹脂混合物として、 レザミンUD−750SA 100部 UD架橋剤 12部 UD−102A 12部 マイクロカプセルF80D（松本油脂製薬（株）製、殻壁軟
化温度140〜145℃） ４部 からなる組成物を用いた以外は、実施例１と同様にし
て、合成皮革を製造した。Example 2 In Example 1, as a resin mixture, resamine UD-750SA 100 parts UD cross-linking agent 12 parts UD-102A 12 parts Microcapsule F80D (Matsumoto Yushi-Seiyaku Co., Ltd., shell wall softening temperature 140-145 ° C.) 4 Synthetic leather was produced in the same manner as in Example 1 except that the composition of parts was used.
得られた合成皮革は、発泡セル径40〜70μｍ、セル数
密度12000〜13000個/cm2、比重0.34g/cm3、層間強度2.2
kg/cmであつた。The obtained synthetic leather has a foam cell diameter of 40 to 70 μm, a cell number density of 12000 to 13000 cells / cm 2 , a specific gravity of 0.34 g / cm 3 , and an interlayer strength of 2.2.
It was kg / cm.
第１図は、本発明による合成皮革の断面図を示す。 １……起毛、２……起毛布、３……原撚糸層、４……発
泡層、５……接着剤層、６……表皮層。FIG. 1 shows a sectional view of a synthetic leather according to the present invention. 1 ... Raised fabric, 2 ... Raised fabric, 3 ... Original twisted yarn layer, 4 ... Foamed layer, 5 ... Adhesive layer, 6 ... Skin layer.
Claims (2)
れてなる合成皮革の製造方法において、基布としての起
毛布上にウレタン樹脂接着剤と平均粒径５〜50μｍの熱
膨張性マイクロカプセルとを含む混合物を含浸させ、混
合物を加熱して、層中に起毛を含む発泡層を形成すると
共に、マイクロカプセルを発泡層中に接着固定すること
を特徴とする合成皮革の製造方法。1. A method for producing synthetic leather comprising a resin foam layer and a skin layer laminated on a base cloth, wherein a urethane resin adhesive and a thermal expansion having an average particle size of 5 to 50 μm are provided on a raised cloth as the base cloth. Of a synthetic leather, wherein the mixture is impregnated with a conductive microcapsule, and the mixture is heated to form a foamed layer containing raised hair in the layer, and the microcapsule is adhesively fixed in the foamed layer. .
ｍ、セル数密度が7000〜13000個/cm2、密度が0.1〜0.4g
/cm3であることを特徴とする特許請求の範囲第１項記載
の合成皮革の製造方法。2. The foam layer has a foam cell diameter of 30 to 100 μm.
m, cell number density is 7000 to 13000 cells / cm 2 , density is 0.1 to 0.4 g
The method for producing the synthetic leather according to claim 1, wherein the synthetic leather is / cm 3 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62080805A JPH086261B2 (en) | 1987-03-31 | 1987-03-31 | Synthetic leather manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62080805A JPH086261B2 (en) | 1987-03-31 | 1987-03-31 | Synthetic leather manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63249787A JPS63249787A (en) | 1988-10-17 |
| JPH086261B2 true JPH086261B2 (en) | 1996-01-24 |
Family
ID=13728680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62080805A Expired - Lifetime JPH086261B2 (en) | 1987-03-31 | 1987-03-31 | Synthetic leather manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH086261B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6433423B2 (en) * | 2013-05-27 | 2018-12-05 | アキレス株式会社 | Synthetic leather |
| JP7176838B2 (en) * | 2017-10-11 | 2022-11-22 | 富士紡ホールディングス株式会社 | polishing pad |
| JP7111523B2 (en) * | 2018-06-25 | 2022-08-02 | 帝人コードレ株式会社 | Sheet-shaped article and method for producing the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6059180A (en) * | 1983-09-09 | 1985-04-05 | Sunstar Giken Kk | Manufacture of leathery sheet |
-
1987
- 1987-03-31 JP JP62080805A patent/JPH086261B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63249787A (en) | 1988-10-17 |
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