JPH02160980A - Production of artificial leather - Google Patents
Production of artificial leatherInfo
- Publication number
- JPH02160980A JPH02160980A JP31726188A JP31726188A JPH02160980A JP H02160980 A JPH02160980 A JP H02160980A JP 31726188 A JP31726188 A JP 31726188A JP 31726188 A JP31726188 A JP 31726188A JP H02160980 A JPH02160980 A JP H02160980A
- Authority
- JP
- Japan
- Prior art keywords
- leather
- natural leather
- powder
- artificial leather
- natural
- 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 23
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000010985 leather Substances 0.000 claims abstract description 67
- 239000000843 powder Substances 0.000 claims abstract description 31
- 239000004744 fabric Substances 0.000 claims abstract description 9
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 9
- 239000000057 synthetic resin Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims 2
- 238000000465 moulding Methods 0.000 claims 1
- 239000000123 paper Substances 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 10
- 102000008186 Collagen Human genes 0.000 abstract description 7
- 108010035532 Collagen Proteins 0.000 abstract description 7
- 229920001436 collagen Polymers 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000002759 woven fabric Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 238000010298 pulverizing process Methods 0.000 description 5
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 241000218645 Cedrus Species 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、天然皮革粉末を用いた人工皮革の製造方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for producing artificial leather using natural leather powder.
（従来技術）
従来、皮革片を長時間水に漬けて膨潤させた後ビータ−
などで繊維状に解体した後乾燥し粉砕するか、あるいは
加熱蒸気で蒸煮後充分乾燥し粉砕して製造した天然皮革
粉末を合成樹脂と混合し基布上に被覆もしくはフィルム
状にし接着して人工皮革を製造していた。(Prior art) In the past, leather pieces were soaked in water for a long time to swell and then beater.
The natural leather powder is made by dismantling it into fibers, drying and pulverizing it, or by steaming it with heated steam, drying it thoroughly and pulverizing it, then mixing it with synthetic resin and coating it on a base fabric or making it into a film and bonding it to create an artificial leather. It manufactured leather.
（発明が解決しようとする課題）
基布上に天然皮革粉末を接着させることにより人工皮革
を製造する技術として例えば特公昭５８−３０９２０号
公報がある。しかし、主原料となる天然皮革粉末をビー
タ−による打解法で製造した場合は原料皮に含まれるコ
ラ−ケン繊維が強靭な為に、微粉砕する時粒径分布が不
均一になったり、繊維の長いものが生成して皮革粉末の
粒子同志が絡み合い、合成樹脂との均一な混合が困難と
なり、その結果、製造した人工皮革に天然皮革に固有な
性質を与えることが困難で、更には成型した樹脂の性質
まで劣化させることになっていた。この欠点を補う方法
として、微粉砕して得られた天然皮革粉末を繊維状では
無く粒状にすれば良いとの観点から加熱蒸気で原料とな
る天然皮革の細片を蒸煮後、強制的に含有水分が４％以
下になるまで乾燥した後に粉砕する方法が考えられた。(Problems to be Solved by the Invention) For example, Japanese Patent Publication No. 58-30920 discloses a technique for manufacturing artificial leather by adhering natural leather powder onto a base fabric. However, when natural leather powder, which is the main raw material, is manufactured using a beating method using a beater, the Kolaken fibers contained in the raw leather are tough, so the particle size distribution becomes uneven when pulverized, and the fibers As long particles of leather powder are formed, particles of leather powder become entangled with each other, making it difficult to mix uniformly with synthetic resin.As a result, it is difficult to give manufactured artificial leather the properties unique to natural leather, and furthermore, it becomes difficult to mold. It was supposed to deteriorate the properties of the resin. As a way to compensate for this drawback, from the viewpoint that it is better to make the natural leather powder obtained by fine pulverization into granules rather than fibers, after steaming the raw material natural leather thin pieces with heated steam, the raw material is forcibly contained. A method was considered in which the material was dried until the moisture content was 4% or less and then pulverized.
（特開昭６３−１５６５５２号公報）しかし、この方法
によると原料皮革が杉潤状態で長時間熱水により加熱さ
れるため、コラーゲン繊維が熱的変化を強く受けて劣悪
なゼラチンに変化し、その乾燥品は比較的破壊に対して
脆く、粘弾性も低いものとなる。(Japanese Unexamined Patent Publication No. 63-156552) However, according to this method, the raw material leather is heated with hot water for a long time in a moist cedar state, so the collagen fibers undergo strong thermal changes and turn into inferior gelatin. The dried product is relatively fragile to fracture and has low viscoelasticity.
しかし、これを粉砕したところ初期粉砕は容易であるも
のの、ある粒径以下に粉砕しようとすると非常に困難と
なり、平均粒径２０μｍ前後の微粉を得ようとすれば、
粉砕した製品を分級して微粉のみを回収する方法をとら
なければならない。つまり充分に天然皮革の風合を備え
た良質の人工皮革を作るには、天然皮革粉末を均一に合
成樹脂と混合すると共に天然皮革粉末の含有量を高くす
る必要がある、しかるに、このようにして製造した天然
皮革粉は平均粒径が５０μ川程度と粗いので、樹脂との
均一混合が極めて困難となり、また製品の人工皮革を顕
微鏡でミクロ的に観察すると天然皮革粉末同志の隙間が
不均一で、その隙間を埋める合成樹脂の量が多くなり風
合を損なう結果となっていた。本発明の目的は天然皮革
のコラーゲン繊維の絡み合いを効果的に解きほぐすこと
によって、次工程の微粉砕を容易にし、よって素材とし
て良質の天然皮革粉末を得、これを用いて天然皮革の風
合を充分に有する人工皮革を安価に大量供給出来る製造
方法にある。However, when this was pulverized, although the initial pulverization was easy, it became very difficult to pulverize it below a certain particle size, and if you tried to obtain a fine powder with an average particle size of around 20 μm,
A method must be used to classify the pulverized product and collect only the fine powder. In other words, in order to produce high-quality artificial leather that has the feel of natural leather, it is necessary to uniformly mix natural leather powder with synthetic resin and to increase the content of natural leather powder. The natural leather powder produced by this process has a rough average particle size of about 50μ, making it extremely difficult to mix it uniformly with the resin.Also, when the artificial leather product is microscopically observed under a microscope, the gaps between the natural leather powders are uneven. However, the amount of synthetic resin that fills the gaps increases, resulting in a loss of texture. The purpose of the present invention is to effectively disentangle the collagen fibers of natural leather to facilitate the next step of fine pulverization, thereby obtaining high-quality natural leather powder as a raw material, and using this to improve the texture of natural leather. The manufacturing method is such that a sufficient amount of artificial leather can be supplied in large quantities at low cost.
（課題を解決するための手段）
本発明の特徴手段は、加水した天然皮革細片を密閉した
圧力容器に入れ、一定時間加熱と同時に加圧した後、該
圧力容器を瞬間的に開放減圧させることにより皮革細片
を膨化させると同時に解砕し、それを乾燥、微粉砕して
得られた天然皮革微粉末を用いての人工皮革を製造する
＃ことにあり、その作用は以下の通りである。(Means for Solving the Problems) The characteristic means of the present invention is to put the hydrated natural leather strips in a closed pressure vessel, heat and pressurize them for a certain period of time, and then momentarily open the pressure vessel to reduce the pressure. The purpose of this method is to simultaneously swell and crush leather strips, dry them, and pulverize them to produce artificial leather using fine natural leather powder obtained.The operation is as follows. be.
（作用）
まず、天然皮革から人工皮革の素材となる天然皮革粉末
を作る段階において、従来方法のひとつである蒸煮処理
によって天然皮革のコラーゲン繊維の絡み合いをほぐす
工稈を更に効果的に行なうには如何なる手段が好適であ
るかを各種実験で調べたところ、密閉した圧力容器内で
一定時間蒸気と接触させ、次に該容器を瞬時に解放し、
急激に容器内圧力を減圧させて皮革の細片に膨化作用を
起こさせて解砕することにより、単に蒸気加熱するだけ
の従来手段に比べ、短時間にコラーゲン繊維が解きほぐ
され、かつ効果的に解砕される事を見出した。つまり、
水を含ませた天然皮革の細片を密閉した圧力容器に入れ
て水の気化温度以上に加熱すると、皮革細片内部の水は
加熱され一部は蒸気となるが、大部分の水は容器内が加
圧状態のため加圧熱水として原料皮革内に留まり、蒸気
と共に原料皮革を全体にわたって膨潤させ、皮革組織中
のコラーゲン繊維の絡みを解きほぐす。そして、高温高
圧状態にある容器を瞬時に解放して急激に減圧すると、
原料皮革内の熱水が急激な圧力変化に依り気化膨張し、
あらかじめ解きほぐされている皮革繊維があたかも内部
から爆発されたように急激な膨化作用により解砕される
。このようにして得られた天然皮革の解砕品は組織の内
部にまで歪みが加えられているため、次工程の粉砕機に
よる微粉砕処理を極めて効果的に行なうことが出来るの
で天然皮革の微粉末を効率よく製造することが出来る。(Function) First, at the stage of producing natural leather powder, which is the raw material for artificial leather, from natural leather, in order to more effectively disentangle the collagen fibers of natural leather by steaming, which is one of the conventional methods. After conducting various experiments to find out what method is suitable, we found that the method is to contact steam for a certain period of time in a closed pressure container, then immediately release the container,
By rapidly reducing the pressure inside the container to cause the leather pieces to swell and shatter, the collagen fibers are loosened in a shorter time and more effective than the conventional method of simply heating with steam. It was found that it was broken down into pieces. In other words,
When a strip of natural leather moistened with water is placed in a sealed pressure vessel and heated above the vaporization temperature of water, the water inside the strip of leather is heated and some of it becomes steam, but most of the water remains in the container. Since the interior is pressurized, it stays in the raw leather as pressurized hot water, swells the raw leather throughout with steam, and loosens the entanglements of collagen fibers in the leather tissue. Then, if the container, which is in a high temperature and high pressure state, is instantly released and the pressure is suddenly reduced,
The hot water inside the raw leather vaporizes and expands due to the sudden pressure change.
The leather fibers that have been loosened beforehand are crushed by the rapid swelling action, as if they were exploded from within. The crushed natural leather obtained in this way has distortion applied to the inside of its structure, so it can be pulverized very effectively using a crusher in the next step. It can be manufactured efficiently.
更に、操作条件を変えることにより皮革組織中のコラー
ゲン蛋白の熱変化状態を調整し、製品皮革粉末に微妙な
物性を与えることが出来るので、より一層用途に適した
天然皮革粉末を製造することが出来るようになった。か
くして、得られた天然皮革の微粉末を樹脂と混合して天
然皮革の風合を充分に有する０浪質の人工皮革を製造す
る。Furthermore, by changing the operating conditions, it is possible to adjust the thermal change state of collagen protein in the leather tissue and give subtle physical properties to the product leather powder, making it possible to produce natural leather powder that is even more suitable for various uses. Now I can do it. The thus obtained fine powder of natural leather is mixed with a resin to produce a zero-corrosion artificial leather having a sufficient feel of natural leather.
（発明の効果）
このように、本発明によれば、従来品に比べ極めて微細
な天然皮革粉末を容易に、エネルギー効率良く製造でき
、これを用いることにより天然皮革の良さを充分に備え
た人工皮革製品を大量に供給出来るようになった。つま
り、本発明により製造した天然皮革粉末を合成樹脂と混
合して人工皮革を造ると、天然皮革粉末が凝集しないで
均一に分散した状態で分布し、しかも容量的に天然皮革
粉末の量を増やして、天然皮革の風合と優れた吸放湿性
、非帯電性を備え、且つ、耐水性、耐久性、耐菌性など
において天然皮革よりも優れた特性を備えた良質な人工
皮革を製造することができる。(Effects of the Invention) As described above, according to the present invention, extremely fine natural leather powder can be easily and energy-efficiently produced compared to conventional products, and by using this, an artificial leather powder that fully has the advantages of natural leather can be produced. It became possible to supply large quantities of leather products. In other words, when artificial leather is made by mixing the natural leather powder produced according to the present invention with a synthetic resin, the natural leather powder is distributed in a uniformly dispersed state without agglomeration, and the amount of natural leather powder is increased in terms of volume. To produce high-quality artificial leather that has the texture of natural leather, excellent moisture absorption and desorption properties, and non-static properties, and also has properties superior to natural leather in terms of water resistance, durability, antibacterial properties, etc. be able to.
また、本発明により天然皮革粉末を造る時に操作条件を
変えることにより、各種の用途に適した特性、風合を有
する人工皮革を製造することが可能になった〇
（実施例）
次に実施例を示す。In addition, according to the present invention, by changing the operating conditions when producing natural leather powder, it has become possible to produce artificial leather with characteristics and textures suitable for various uses.〇 (Example) Next, Example shows.
加水し含有水分を４９％としたクロムなめし皮のシェー
ビング屑を加熱ジャケット付き圧力容器に投入し、蒸気
圧が２ 、９ ｋｇ ／’ＣＴＩＴの蒸気を容器内とジ
ャケットに１０分分間時に供給し原料を加熱した後、圧
力容器の排出口を一挙に解放して解砕した原料皮革を含
有水分が１０％前後になるまで乾燥し、しかる後に衝撃
式粉砕機で粉砕したところ平均粒径が１４μｍである天
然皮革微粉末を製造することが出来た。この天然皮革微
粉末をメチルエチルケトンに溶解したポリウレタン樹脂
に重量割合で各々５０％になるような割合で混合し剥型
紙上でフィルムを造り、それをあらかじめ接着剤を塗付
した不織布表面に接着し、圧力を調整したロールを通過
させて圧着した後１５０’Ｃで３分間加熱乾燥させ、そ
の後、再度ロールを通過させて一体化を行なった結果、
天然皮革の風合を持った人工皮革を得ることが出来た。Shaving scraps of chromium tanned leather with water added to make the moisture content 49% are placed in a pressure vessel with a heating jacket, and steam with a steam pressure of 2.9 kg/'CTIT is supplied into the vessel and the jacket for 10 minutes to remove the raw material. After heating, the outlet of the pressure vessel was opened all at once, and the crushed raw leather was dried until the moisture content was around 10%, and then crushed with an impact crusher, and the average particle size was 14 μm. We were able to produce a certain natural leather fine powder. This natural leather fine powder is mixed with a polyurethane resin dissolved in methyl ethyl ketone at a weight ratio of 50% for each, a film is made on release paper, and it is adhered to a nonwoven fabric surface coated with adhesive in advance. After being crimped by passing through rolls with adjusted pressure, it was heated and dried at 150'C for 3 minutes, and then passed through rolls again to integrate.
We were able to obtain artificial leather that has the texture of natural leather.
以上 出願人 ホソカワミクロン株式会社that's all Applicant: Hosokawa Micron Co., Ltd.
Claims (3)
間加熱と同時に加圧した後、該圧力容器を瞬間的に開放
減圧させて皮革細片を解砕し、更に乾燥粉砕して得た天
然皮革粉末を合成樹脂液と混合し、該混合物を基布に塗
布して人工皮革を製造することを特徴とする人工皮革の
製造方法。(1) Add water to the natural leather pieces, heat and pressurize them for a predetermined time in a sealed container, then instantly open the pressure vessel to reduce the pressure to crush the leather pieces, and then dry and crush them. A method for producing artificial leather, which comprises mixing the obtained natural leather powder with a synthetic resin liquid and applying the mixture to a base fabric to produce artificial leather.
間加熱と同時に加圧した後、該圧力容器を瞬間的に開放
減圧させて皮革細片を解砕し、更に乾燥粉砕して得た天
然皮革粉末を合成樹脂液と混合し、該混合物をフィルム
状に成型し、該フィルムを基布に接着して人工皮革を製
造することを特徴とする人工皮革の製造方法。(2) After adding water to the natural leather strips, heating and pressurizing them for a predetermined time in a sealed container, the pressure container is instantly opened to reduce the pressure to crush the leather strips, and then dry and crush them. A method for producing artificial leather, which comprises mixing the obtained natural leather powder with a synthetic resin liquid, molding the mixture into a film, and adhering the film to a base fabric to produce artificial leather.
革を用いることを特徴とする請求項１及び２記載の人工
皮革の製造方法(3) The method for producing artificial leather according to claims 1 and 2, characterized in that cloth, nonwoven fabric, paper, synthetic or natural leather is used as the base fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31726188A JPH02160980A (en) | 1988-12-14 | 1988-12-14 | Production of artificial leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31726188A JPH02160980A (en) | 1988-12-14 | 1988-12-14 | Production of artificial leather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02160980A true JPH02160980A (en) | 1990-06-20 |
Family
ID=18086269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31726188A Pending JPH02160980A (en) | 1988-12-14 | 1988-12-14 | Production of artificial leather |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02160980A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652138A (en) * | 2014-11-11 | 2015-05-27 | 韩宏宇 | Polyurethane artificial leather |
-
1988
- 1988-12-14 JP JP31726188A patent/JPH02160980A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652138A (en) * | 2014-11-11 | 2015-05-27 | 韩宏宇 | Polyurethane artificial leather |
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