JP2002242083A - Method for producing artificial leather - Google Patents
Method for producing artificial leatherInfo
- Publication number
- JP2002242083A JP2002242083A JP2001039925A JP2001039925A JP2002242083A JP 2002242083 A JP2002242083 A JP 2002242083A JP 2001039925 A JP2001039925 A JP 2001039925A JP 2001039925 A JP2001039925 A JP 2001039925A JP 2002242083 A JP2002242083 A JP 2002242083A
- Authority
- JP
- Japan
- Prior art keywords
- polyvinyl alcohol
- artificial leather
- degree
- mol
- fiber
- 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 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 48
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 48
- 239000000835 fiber Substances 0.000 claims abstract description 42
- 229920000642 polymer Polymers 0.000 claims abstract description 20
- 238000007127 saponification reaction Methods 0.000 claims abstract description 20
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000000704 physical effect Effects 0.000 abstract description 6
- 238000005470 impregnation Methods 0.000 abstract description 4
- 230000005012 migration Effects 0.000 description 19
- 238000013508 migration Methods 0.000 description 19
- 238000000034 method Methods 0.000 description 15
- 239000000047 product Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 7
- 229920003169 water-soluble polymer Polymers 0.000 description 7
- 239000002344 surface layer Substances 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- -1 for example Substances 0.000 description 2
- 230000002040 relaxant effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010036 direct spinning Methods 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、繊維絡合体と高分
子弾性体とからなる人工皮革の風合い柔軟化技術に関す
る。更に詳しくは、繊維絡合体と高分子弾性体との接着
性を緩和する技術の改善に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for softening the feel of artificial leather comprising a fiber entangled body and an elastic polymer. More specifically, the present invention relates to an improvement in technology for relaxing the adhesiveness between a fiber entangled body and an elastic polymer.
【０００２】[0002]
【従来の技術】従来、繊維絡合体と高分子弾性体とから
なる人工皮革の風合い柔軟化技術は、繊維絡合体に水溶
性高分子、例えば澱粉、ポリビニールアルコール（ＰＶ
Ａ）、あるいはカルボキシメチルセルロースなどを付与
し、形態固定による寸法変形防止と高分子弾性体との接
着性を緩和する方法が主体である。2. Description of the Related Art Conventionally, a technique for softening the feel of artificial leather comprising a fiber entangled body and a polymer elastic body is based on a technique in which a water-soluble polymer such as starch, polyvinyl alcohol (PV) is added to a fiber entangled body.
A) or a method of imparting carboxymethylcellulose or the like to prevent dimensional deformation by fixing the form and alleviate the adhesiveness with the elastic polymer.
【０００３】この種の方法は、水溶性高分子が乾燥時に
マイグレーションのため、繊維絡合体の表層部に移行
し、絡合体内部は高分子弾性体との接着性が高くなり、
風合いが硬くなり、水溶性高分子の付着量を多くすると
物性が低下するという問題点があった。[0003] In this type of method, the water-soluble polymer migrates to the surface layer of the fiber entangled body due to migration during drying, and the inside of the entangled body has high adhesion to the elastic polymer,
When the texture becomes hard and the amount of the water-soluble polymer attached is increased, the physical properties deteriorate.
【０００４】特公昭４９−１０６３３号公報には、一
度、付与した水溶性高分子を再度、溶解し、再度固化さ
せ、または同じ水溶性高分子を二度にわたり付与し、柔
軟化させる方法が開示されている。この方法によると、
同じ水溶性高分子を用いるため、付与するときに、先に
付与した水溶性高分子が溶出し、また、水で溶解させた
後、再度固化させるため、繊維絡合体の厚み方向におけ
るマイグレーション分布が一定化し難く、製品品位が安
定しないと言った問題点があった。Japanese Patent Publication No. 49-10633 discloses a method in which a water-soluble polymer once applied is again dissolved and solidified again, or the same water-soluble polymer is applied twice and softened. Have been. According to this method,
Since the same water-soluble polymer is used, the water-soluble polymer previously applied is eluted when applied, and after being dissolved in water and solidified again, the migration distribution in the thickness direction of the fiber entangled body is reduced. There was a problem that it was difficult to stabilize and the product quality was not stable.
【０００５】また、重合度、ケン化度を調整したＰＶＡ
を用い、逆にマイグレーションを抑えて、絡合体内部の
接着性を緩和させる方法が特許第２９８０２６１号公報
に記載されている。この方法は、風合いは柔軟になるも
のの、耐摩耗性、強力などが低下しやすく、特に製品表
面の立毛品位と物性の両立には限界があった。Further, PVA having a controlled degree of polymerization and saponification degree
On the other hand, Japanese Patent No. 2980261 describes a method for suppressing migration and relaxing the adhesiveness inside the entangled body. In this method, the texture becomes soft, but the abrasion resistance, strength, and the like are apt to be reduced. In particular, there is a limit in achieving both the napped quality of the product surface and the physical properties.
【０００６】[0006]
【発明が解決しようとする課題】上述したような問題点
に鑑み、本発明の目的は、人工皮革の外観品位、風合い
柔軟性、物性のバランス化が容易な製造方法を提供する
ことにあるSUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a manufacturing method which makes it easy to balance the appearance quality, texture flexibility and physical properties of artificial leather.
【０００７】[0007]
【課題を解決するための手段】本発明は、かかる課題を
解決するために、下記（１）の構成からなり、さらに好
ましくは（２）の構成からなる。 （１）繊維絡合体と高分子弾性体とからなる人工皮革を
製造する方法において、繊維絡合体に重合度２０００以
上、ケン化度９０〜９９モル％のポリビニールアルコー
ルを付与し固化させた後、該ポリビニールアルコールが
溶解しない熱水温度において溶解可能なケン化度８０〜
８９モル％のポリビニールアルコールを付与し固化さ
せ、しかる後、高分子弾性体の含浸処理と、ポリビニー
ルアルコールの除去処理とを行うことを特徴とする人工
皮革の製造方法。 （２）ケン化度８０〜８９モル％のポリビニールアルコ
ールが、重合度１５００以下のものであることを特徴と
する上記（１）記載の人工皮革の製造方法。The present invention has the following configuration (1), and more preferably the configuration (2), in order to solve the above-mentioned problems. (1) In a method for producing an artificial leather comprising a fiber entangled body and a polymer elastic body, after imparting polyvinyl alcohol having a degree of polymerization of 2,000 or more and a saponification degree of 90 to 99 mol% to the fiber entangled body and solidifying the same. A saponification degree of 80 to 80 which can be dissolved at a hot water temperature at which the polyvinyl alcohol does not dissolve.
A process for producing artificial leather, comprising applying 89 mol% of polyvinyl alcohol to solidify, and thereafter subjecting the polymer to an impregnation treatment with an elastic polymer and a treatment to remove the polyvinyl alcohol. (2) The method for producing artificial leather according to (1), wherein the polyvinyl alcohol having a saponification degree of 80 to 89 mol% has a polymerization degree of 1500 or less.
【０００８】[0008]
【発明の実施の形態】以下、さらに詳しく本発明につい
て説明する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail.
【０００９】本発明においては、繊維絡合体と高分子弾
性体とからなる人工皮革を製造するに当たり、該繊維絡
合体に重合度２０００以上、ケン化度９０〜９９モル％
のポリビニールアルコールを付与し、固化させた後、更
に、前記ポリビニールアルコールが溶解しない熱水温度
において溶解可能なケン化度８０〜８９モル％のポリビ
ニールアルコールを付与し、固化させた後、高分子弾性
体を含浸させるものである。In the present invention, in producing an artificial leather comprising a fiber entangled body and an elastic polymer, the fiber entangled body has a polymerization degree of 2,000 or more and a saponification degree of 90 to 99 mol%.
Polyvinyl alcohol having a saponification degree of 80 to 89 mol% which can be dissolved at a hot water temperature at which the polyvinyl alcohol does not dissolve is applied and solidified. It impregnates a polymer elastic body.
【００１０】本発明で使用される繊維絡合体とは、人工
皮革などの製品に用いられる不織布、織編物あるいは、
これらを絡合一体化したものなどが用いられるものであ
る。The fiber entangled body used in the present invention is a nonwoven fabric, a woven or knitted fabric used for products such as artificial leather or the like.
Those in which these are entangled and integrated are used.
【００１１】これらの繊維絡合体を形成する方法として
は、少なくとも一成分を溶解除去または剥離、分割可能
な海島型、チップブレンド型、花弁型、サイドバイサイ
ド型などの複合紡糸法や直接紡糸法により得られた繊維
を、例えばニードルパンチ、ウオータージェットパンチ
あるいはこれらを組み合わせた絡合手段が常用されてい
るが、特に限定されるものではない。また、これらの繊
維の断面形態も特に限定されるものではない。[0011] As a method of forming these fiber entangled bodies, at least one component is obtained by dissolving or removing or separating, a splittable sea-island type, a chip blend type, a petal type, a side-by-side type, etc., or a direct spinning method. For example, a needle punch, a water jet punch, or an entanglement means combining these is usually used for the obtained fiber, but is not particularly limited. Also, the cross-sectional form of these fibers is not particularly limited.
【００１２】本発明に用いられるポリビニールアルコー
ルは、繊維絡合体の厚み方向において、マイグレーショ
ンを極力抑える役目を果たすものと、逆に積極的にマイ
グレーションを行う役目を果たすものとを組み合わせ用
いることが重要である。また、そのポリビニールアルコ
ールの温水溶解性として、先に付与されるものは、例え
ば６０℃以上などの熱水でのみ溶解可能であり、後で付
与するものはそれよりも低い温水に溶解する特性のもの
を使用することが重要なポイントなのである。It is important to use a combination of the polyvinyl alcohol used in the present invention that plays the role of minimizing migration in the thickness direction of the fiber entangled body and the one that actively plays the role of migration. It is. As the solubility of the polyvinyl alcohol in hot water, the property given earlier can be dissolved only in hot water such as 60 ° C. or higher, and the property given later dissolves in hot water lower than that. The important point is to use things.
【００１３】かかる技術思想のもと、本発明において、
先に付与するポリビニールアルコールは、重合度が２０
００以上であることが重要であり、好ましく２０００以
上５０００以下であり、また、ケン化度は９０〜９９モ
ル％であることが重要であり、好ましくは９５〜９９モ
ル％のものである。すなわち、重合度が２０００未満で
は溶液粘度が低くなり、マイグレーションが起こりやす
く、ケン化度が９０モル未満であると水溶解温度が低く
なり好ましくない。また、重合度が５０００を超え、ケ
ン化度が９９モル％を超えると熱水溶解性が低下して、
脱ポリビニールアルコール加工（ＰＶＡの除去加工）に
時間を要する場合があり好ましくない。[0013] Based on such a technical idea, in the present invention,
The polyvinyl alcohol applied first has a degree of polymerization of 20.
It is important that it is 00 or more, preferably 2,000 or more and 5,000 or less, and it is important that the degree of saponification is 90 to 99 mol%, preferably 95 to 99 mol%. That is, if the degree of polymerization is less than 2,000, the solution viscosity is low, and migration is likely to occur. If the degree of saponification is less than 90 mol, the water dissolution temperature is undesirably low. When the degree of polymerization exceeds 5,000 and the degree of saponification exceeds 99 mol%, the solubility in hot water decreases,
Undesirably, it may take time to remove polyvinyl alcohol (PVA removal).
【００１４】本発明の方法においては、繊維絡合体に上
述のポリビニールアルコールを含浸し、熱風乾燥し固化
させるが、このポリビニールアルコール水溶液中にマイ
グレーション防止剤を添加すること、また、乾燥に際し
てはマイクロ波乾燥機を用いたりして繊維絡合体の厚み
方向において、より均一に付着させる手段を講ずること
は好ましいものである。In the method of the present invention, the fiber entangled body is impregnated with the above-mentioned polyvinyl alcohol, dried with hot air and solidified, and a migration inhibitor is added to the aqueous polyvinyl alcohol solution. It is preferable to use a microwave drier or the like to take measures to make the fiber entangled body adhere more uniformly in the thickness direction.
【００１５】繊維絡合体が複合繊維、例えば一成分を溶
解除去するを前提とする海島型複合繊維の場合は、上記
のポリビニールアルコールを付与した後、海成分を除去
する。または分割型複合繊維の場合は、分割後に付与し
てもよいし、分割前でもよく、最終製品の風合い柔軟
性、外観品位などを勘案して適宜に行えばよい。重要な
ポイントは、マイグレーションを防止し、いかにして厚
み方向に均一化したポリビニールアルコール皮膜を形成
するかである。When the fiber entangled body is a conjugate fiber, for example, a sea-island conjugate fiber on the premise that one component is dissolved and removed, the sea component is removed after the polyvinyl alcohol is applied. Alternatively, in the case of a splittable conjugate fiber, it may be applied after splitting or before splitting, and may be appropriately performed in consideration of the texture flexibility and appearance quality of the final product. The important point is how to prevent migration and form a polyvinyl alcohol film that is uniform in the thickness direction.
【００１６】このポリビニールアルコールの好ましい付
着量としては、繊維絡合体の形態によって異なるが、溶
剤などで一成分を溶解除去する複合繊維の絡合体である
場合、剥離、分割型や単成分の直接紡糸型繊維の場合な
ど、後工程における高分子弾性体との接着をどの程度緩
和するかによるため、一概には限定されるものではない
が、通常好ましくは５〜２０重量％、より好ましくは５
〜１５重量％の範囲が一応の目安となる。溶液濃度によ
ってもマイグレーションが変化するため、付着量を少な
くする場合は、低濃度溶液中に増粘剤、例えばアルギン
酸ソーダ、ポリアクリルアミドなどを混合あるいは併用
するのが好ましい。The preferable adhesion amount of the polyvinyl alcohol varies depending on the form of the fiber entangled body. However, in the case of a conjugated fiber of a conjugate fiber in which one component is dissolved and removed with a solvent or the like, a peeling, a split type or a single component direct For example, in the case of a spun fiber, it is not particularly limited as it depends on how much the adhesion to the polymer elastic body in the subsequent step is relaxed, but it is usually preferably 5 to 20% by weight, more preferably 5 to 20% by weight.
The range of about 15% by weight is a rough guide. Since migration changes depending on the solution concentration, it is preferable to mix or use a thickener, for example, sodium alginate, polyacrylamide, etc. in a low-concentration solution when the amount of adhesion is reduced.
【００１７】本発明において、ポリビニールアルコール
を皮膜化させた後、好ましくは１２０℃〜１８０℃、よ
り好ましくは１４０℃〜１７０℃の熱風中で、好ましく
は１〜１０分、最も好ましくは３〜７分の熱処理を行う
ことが、脱ポリビニールアルコール（ＰＶＡの除去加
工）に時間を要することによる液の再含浸による繊維絡
合体の寸法変化防止や、先に付与したポリビニールアル
コールの膨潤、部分溶解等を極力防止するのに好ましい
ものである。In the present invention, after the polyvinyl alcohol is formed into a film, it is preferably in hot air at 120 to 180 ° C., more preferably 140 to 170 ° C., preferably 1 to 10 minutes, most preferably 3 to 10 minutes. Performing the heat treatment for 7 minutes prevents dimensional change of the fiber entangled body due to re-impregnation of the liquid due to the time required for removing polyvinyl alcohol (removal processing of PVA), and swelling and partial It is preferable to prevent dissolution and the like as much as possible.
【００１８】本発明に用いられる後から付与するポリビ
ニールアルコールは、先に付与したポリビニールアルコ
ールが溶解しない熱水温度において溶解可能な重合度が
好ましくは１５００以下のもので、より好ましく１００
０以下３００以上で、一方、ケン化度は８０〜８９モル
％のもので、好ましくは８０〜８８モル％のものであ
る。重合度が１５００を越えると溶液の粘性が高まりマ
イグレーションが起こり難くなり、ケン化度が８９モル
％を越えると熱水溶解温度が高くなり、先に付与したポ
リビニールアルコールを膨潤、部分溶解しやすくなり好
ましくない。また、重合度が３００未満、ケン化度が８
０モル％未満となると低粘度化し、マイグレーション分
布の傾斜が付け難くなる場合があり、かつ、後工程にお
いて、高分子弾性体の溶剤がジメチルホルムアミド（Ｄ
ＭＦ）の場合は寸法変化がしやすく、不安定である場合
があり好ましくない。このときのポリビニールアルコー
ル溶液温度は、先に付与したポリビニールアルコールの
皮膜が膨潤、部分溶解する温度以下で含浸処理すること
が重要である。The polyvinyl alcohol to be added later used in the present invention preferably has a degree of polymerization at a hot water temperature at which the previously applied polyvinyl alcohol does not dissolve is preferably 1500 or less, more preferably 100 or less.
The degree of saponification is from 80 to 89 mol%, preferably from 80 to 88 mol%. If the degree of polymerization exceeds 1500, the viscosity of the solution increases and migration hardly occurs. If the degree of saponification exceeds 89 mol%, the hot water dissolution temperature increases, and the previously applied polyvinyl alcohol is easily swollen and partially dissolved. It is not preferable. Further, the degree of polymerization is less than 300 and the degree of saponification is 8
If the amount is less than 0 mol%, the viscosity may be reduced, the inclination of the migration distribution may not be easily imparted, and the solvent for the polymer elastic material may be dimethylformamide (D
In the case of (MF), the dimensional change is apt to occur, and it may be unstable, which is not preferable. It is important that the polyvinyl alcohol solution temperature at this time is not more than the temperature at which the previously applied polyvinyl alcohol film swells and partially dissolves.
【００１９】ここでのポリビニールアルコールの役目と
しては、繊維絡合体の厚み方向において、積極的にマイ
グレーションを発生させ、表層部の繊維と高分子弾性体
との接着を極力緩和し、後加工におけるサンドペーパー
などの起毛処理において、効率的に立毛を発生せしめる
ものである。付着量としては、先に付与したポリビニー
ルアルコールの付着量との兼ね合いで、目標とする最終
製品の物性、風合い柔軟性を考慮して付与すればよい。
含浸後の乾燥は、マイグレーションを抑えない方法、条
件であればよいのであり、特に限定されるものではな
い。The role of the polyvinyl alcohol here is to positively cause migration in the thickness direction of the fiber entangled body, to reduce the adhesion between the fibers in the surface layer and the elastic polymer as much as possible, In the raising treatment of sandpaper or the like, nap is efficiently generated. The amount of adhesion may be given in consideration of the physical properties and texture flexibility of the target final product in consideration of the amount of adhesion of the polyvinyl alcohol previously applied.
Drying after impregnation is not particularly limited as long as the method and conditions do not suppress migration.
【００２０】この繊維絡合体と二種類のポリビニールア
ルコールを付与したシートは、その後、高分子弾性体を
付与し、ポリビニールアルコールを除去し、必要に応じ
て厚み方向に半裁（１／２厚さにスライス裁断するこ
と）し、少なくとも片面を起毛処理、または銀面加工処
理を行うことにより、製品品位、柔軟性および物性のバ
ランスの優れた人工皮革を製造することができるもので
ある。The sheet to which the fiber entangled body and the two types of polyvinyl alcohol have been applied is then provided with a polymer elastic body to remove the polyvinyl alcohol and, if necessary, cut in half in the thickness direction (1/2 thickness). Then, by performing a brushing treatment or a grain finishing treatment on at least one surface, an artificial leather having an excellent balance of product quality, flexibility and physical properties can be produced.
【００２１】[0021]
【実施例】以下に本発明を実施例にて詳細に説明する。The present invention will be described below in detail with reference to examples.
【００２２】なお、実施例中に記載したポリビニールア
ルコールのマイグレーション、製品の耐摩耗性、風合い
柔軟性、外観品位は下記によって評価した。 （１）ポリビニールアルコールのマイグレーション：先
に付与したシートを厚み方向に切断し、この切断面にヨ
ウ素のホウ酸水溶液を付与して、実体顕微鏡で着色分布
を肉眼で観察し評価した。評価基準は下記のようにし
た。The migration of polyvinyl alcohol described in the examples, the abrasion resistance of the product, the softness of the hand, and the appearance quality were evaluated as follows. (1) Migration of polyvinyl alcohol: The previously applied sheet was cut in the thickness direction, an aqueous solution of boric acid of iodine was applied to the cut surface, and the color distribution was visually observed and evaluated with a stereoscopic microscope. The evaluation criteria were as follows.
【００２３】○：厚み方向に均一に着色している。：: Colored uniformly in the thickness direction.
【００２４】△：内層部と中心部でやや着色差が認めら
れる。Δ: A slight coloring difference is observed between the inner layer portion and the central portion.
【００２５】×：表層部が極めて着色している。X: The surface layer is extremely colored.
【００２６】後で付与したシートについても同じように
サンプリングし評価した。評価基準は下記のようにし
た。The sheet applied later was similarly sampled and evaluated. The evaluation criteria were as follows.
【００２７】○：表層部が内層部より濃く着色してい
る。：: The surface layer is colored deeper than the inner layer.
【００２８】△：表層部が内層部よりやや濃く着色して
るい。Δ: The surface layer is slightly darker than the inner layer.
【００２９】×：厚み方向に均一に着色している。 （２）製品の風合い柔軟性：染色、仕上げ処理された最
終製品を触感により評価した。評価基準は下記のように
した。×: Colored uniformly in the thickness direction. (2) Texture flexibility of the product: The dyed and finished finished product was evaluated by touch. The evaluation criteria were as follows.
【００３０】○：柔軟である。○: Flexible.
【００３１】△：やや硬い。Δ: Somewhat hard.
【００３２】×：硬い。 （３）耐摩耗性：直径４．５ｃｍのサンプルを採取し、
島津製作所製のシーファー織物摩耗試験機を用い、その
立毛面をブラシ長さ１．１ｍｍ、直径０．４ｍｍのナイ
ロン糸を１００本揃えて束とし、該束を直径１１０ｃｍ
の円内に６重の同心円状に９７個配置し、計９７００本
植えた円形ブラシに重さ３６２８．８ｇの荷重を加え、
ブラシ回転速度６５ｒｐｍで、サンプル回転速度６２ｒ
ｐｍで４５回転させた後の重量減少を測定した。評価基
準は下記のようにした。×: Hard. (3) Abrasion resistance: A 4.5 cm diameter sample was collected,
Using a Shifazu fabric abrasion tester manufactured by Shimadzu Corporation, the brushed surface is made up of a bundle of 100 nylon yarns having a brush length of 1.1 mm and a diameter of 0.4 mm.
97 concentric circles are arranged in a circle, and a weight of 3628.8 g is applied to a total of 9700 round brushes.
With a brush rotation speed of 65 rpm, a sample rotation speed of 62 r
The weight loss after 45 rotations at pm was measured. The evaluation criteria were as follows.
【００３３】○：摩耗減量が１５ｍｇ以下である。：: Loss on wear is 15 mg or less.
【００３４】△：摩耗減量が１５〜２５ｍｇの範囲内で
ある。Δ: Abrasion loss is in the range of 15 to 25 mg.
【００３５】×：摩耗減量が２５ｍｇ以上である。 実施例１ 海成分がポリスチレン、島成分がポリプロピレンテレフ
タレート、島／海＝６０／４０重量％、島本数５０本、
繊維太さ約４．２ｄｔｅｘの高分子相互配列体繊維を捲
縮し、繊維長さ５１ｍｍにカットしたステープル繊維を
準備した。×: The loss on wear is 25 mg or more. Example 1 The sea component is polystyrene, the island component is polypropylene terephthalate, island / sea = 60/40% by weight, the number of islands is 50,
A staple fiber was prepared by crimping a polymer inter-arrayed fiber having a fiber thickness of about 4.2 dtex and cutting the fiber to a fiber length of 51 mm.
【００３６】このステープルをカード・クロスラッパー
に通し、ウェブとなし、ニードルパンチを施し、熱水で
収縮処理した後、乾燥し、目付約７００ｇ／ｍ2 、見掛
密度０．３６ｇ／ｃｍ3 の繊維絡合体を得た。The staple is passed through a card / cloth wrapper, formed into a web, subjected to needle punching, shrunk with hot water, dried, and dried to a weight of about 700 g / m 2 and an apparent density of 0.36 g / cm 3 . A fiber entangled body was obtained.
【００３７】次いで、重合度３５００、ケン化度９８モ
ル％のポリビニールアルコール水溶液を固形分で１０重
量％となるように付与し、６０℃で乾燥した。Next, an aqueous solution of polyvinyl alcohol having a polymerization degree of 3500 and a saponification degree of 98 mol% was applied to a solid content of 10% by weight, and dried at 60 ° C.
【００３８】このシートのマイグレーション状態は表１
に示した如く、厚み方向にほぼ均一に着色した。Table 1 shows the migration state of this sheet.
As shown in the figure, coloring was substantially uniform in the thickness direction.
【００３９】このシートをトリクレンに浸漬し、マング
ルで圧搾する操作を繰り返し、前記繊維の海成分の除去
加工をした後、１００℃で乾燥した。This sheet was immersed in trichlene and squeezed with a mangle repeatedly to remove the sea component of the fiber, and then dried at 100 ° C.
【００４０】次いで、重合度６００、ケン化度８６モル
％の温度３０℃のポリビニールアルコール水溶液を固形
分で１５重量％となるように付与し、１００℃で乾燥し
た。このシートのマイグレーション状態は、表１に示し
たように表層部が内層部より濃く着色していた。Next, an aqueous polyvinyl alcohol solution having a polymerization degree of 600 and a saponification degree of 86 mol% at a temperature of 30 ° C. was applied to a solid content of 15% by weight, and dried at 100 ° C. As shown in Table 1, the migration state of this sheet was such that the surface layer was colored deeper than the inner layer.
【００４１】このシートにＤＭＦで希釈したポリエステ
ル・ポリエーテル系ポリウレタン溶液を固形分として対
繊維当たり２８重量％となるように付与し、湿式凝固さ
せた後、湯洗（ＰＶＡの除去加工を兼ねる）して乾燥し
た。このシートを厚み方向に約１／２に半裁した後、２
４０メッシュのサンドペーパーで半裁面を軽く研削し、
非半裁面を仕上げ面として研削した。A polyester / polyether-based polyurethane solution diluted with DMF is applied to the sheet so as to have a solid content of 28% by weight based on the fiber, and after wet coagulation, washing with hot water (also serves as a process for removing PVA). And dried. After cutting this sheet in half in the thickness direction,
Lightly cut the half cut surface with 40 mesh sandpaper,
The non-half cut surface was ground as a finished surface.
【００４２】このシートをサーキュラー染色機でブラウ
ン系の分散染料を用いて染色し、仕上げ処理を行い乾燥
した。The sheet was dyed with a brown disperse dye using a circular dyeing machine, finished, and dried.
【００４３】かくして得られた人工皮革は、表１に示し
た如く外観品位、風合い、柔軟性、耐摩耗性とも優れた
ものであった。 実施例２〜３、比較例１〜３ 実施例１の繊維絡合体を用い、表１に記載したポリビニ
ールアルコールを使用して、実施例１と同様にして人工
皮革を加工した。The artificial leather thus obtained was excellent in appearance quality, texture, flexibility and abrasion resistance as shown in Table 1. Examples 2 to 3 and Comparative Examples 1 to 3 Using the fiber entangled body of Example 1 and polyvinyl alcohol described in Table 1, artificial leather was processed in the same manner as in Example 1.
【００４４】中間工程におけるポリビニールアルコール
のマイグレーション状態および得られた人工皮革の特性
を表１に示す。Table 1 shows the migration state of the polyvinyl alcohol in the intermediate step and the properties of the artificial leather obtained.
【００４５】[0045]
【表１】 [Table 1]
【００４６】[0046]
【発明の効果】本発明の製造方法によれば、重合度、ケ
ン化度の違いからくるマイグレーション性、熱水溶解性
あるいは皮膜接着強力性などをうまく組み合わせること
により、製品表面の品位を損なうことなく、風合い柔軟
性、耐摩耗性のバランスがとれた人工皮革を製造するこ
とが可能である。According to the production method of the present invention, the quality of the product surface is impaired by properly combining the migration property, hot water solubility, or film adhesion strength resulting from the difference in the degree of polymerization and the degree of saponification. In addition, it is possible to manufacture artificial leather having a good balance of texture flexibility and abrasion resistance.
Claims (2)
皮革を製造する方法において、繊維絡合体に重合度２０
００以上、ケン化度９０〜９９モル％のポリビニールア
ルコールを付与し固化させた後、該ポリビニールアルコ
ールが溶解しない熱水温度において溶解可能なケン化度
８０〜８９モル％のポリビニールアルコールを付与し固
化させ、しかる後、高分子弾性体の含浸処理と、ポリビ
ニールアルコールの除去処理とを行うことを特徴とする
人工皮革の製造方法。1. A method for producing an artificial leather comprising a fiber entangled body and a polymer elastic body, wherein the fiber entangled body has a degree of polymerization of 20.
After giving polyvinyl alcohol having a saponification degree of 90 to 99 mol% and solidifying, a polyvinyl alcohol having a saponification degree of 80 to 89 mol% which can be dissolved at a hot water temperature at which the polyvinyl alcohol does not dissolve is added. A method for producing artificial leather, which comprises applying and solidifying a polymer, followed by impregnating the elastic polymer and removing polyvinyl alcohol.
アルコールが、重合度１５００以下のものであることを
特徴とする請求項１記載の人工皮革の製造方法。2. The method for producing artificial leather according to claim 1, wherein the polyvinyl alcohol having a saponification degree of 80 to 89 mol% has a polymerization degree of 1500 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001039925A JP2002242083A (en) | 2001-02-16 | 2001-02-16 | Method for producing artificial leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001039925A JP2002242083A (en) | 2001-02-16 | 2001-02-16 | Method for producing artificial leather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002242083A true JP2002242083A (en) | 2002-08-28 |
Family
ID=18902627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001039925A Pending JP2002242083A (en) | 2001-02-16 | 2001-02-16 | Method for producing artificial leather |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002242083A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013234409A (en) * | 2012-05-10 | 2013-11-21 | Toray Ind Inc | Sheet-like article and method for producing the same |
| WO2014042241A1 (en) * | 2012-09-14 | 2014-03-20 | 東レ株式会社 | Method for manufacturing sheet-shaped object and sheet-shaped object obtained via said method |
| EP2927368A4 (en) * | 2012-11-30 | 2016-06-29 | Toray Industries | SHEET-SHAPED OBJECT AND METHOD FOR PRODUCING SHEET-LIKE OBJECT |
-
2001
- 2001-02-16 JP JP2001039925A patent/JP2002242083A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013234409A (en) * | 2012-05-10 | 2013-11-21 | Toray Ind Inc | Sheet-like article and method for producing the same |
| WO2014042241A1 (en) * | 2012-09-14 | 2014-03-20 | 東レ株式会社 | Method for manufacturing sheet-shaped object and sheet-shaped object obtained via said method |
| CN104619909A (en) * | 2012-09-14 | 2015-05-13 | 东丽株式会社 | Method for manufacturing sheet-shaped object and sheet-shaped object obtained via said method |
| KR20150058268A (en) * | 2012-09-14 | 2015-05-28 | 도레이 카부시키가이샤 | Method for manufacturing sheet-shaped object and sheet-shaped object obtained via said method |
| JP5880721B2 (en) * | 2012-09-14 | 2016-03-09 | 東レ株式会社 | Manufacturing method of sheet-like material and sheet-like material obtained from this manufacturing method |
| EP2896741A4 (en) * | 2012-09-14 | 2016-06-08 | Toray Industries | METHOD FOR MANUFACTURING SHEET-SHAPED OBJECT AND SHEET-LIKE OBJECT OBTAINED BY SAID METHOD |
| CN104619909B (en) * | 2012-09-14 | 2017-09-22 | 东丽株式会社 | The manufacture method of tablet and the tablet obtained using the manufacture method |
| US10301770B2 (en) | 2012-09-14 | 2019-05-28 | Toray Industries, Inc. | Process for producing sheet-shaped material and sheet-shaped material obtained by said process |
| KR102131678B1 (en) * | 2012-09-14 | 2020-07-08 | 도레이 카부시키가이샤 | Method for manufacturing sheet-shaped object and sheet-shaped object obtained via said method |
| EP2927368A4 (en) * | 2012-11-30 | 2016-06-29 | Toray Industries | SHEET-SHAPED OBJECT AND METHOD FOR PRODUCING SHEET-LIKE OBJECT |
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