JPH0160596B2 - - Google Patents
Info
- Publication number
- JPH0160596B2 JPH0160596B2 JP58238255A JP23825583A JPH0160596B2 JP H0160596 B2 JPH0160596 B2 JP H0160596B2 JP 58238255 A JP58238255 A JP 58238255A JP 23825583 A JP23825583 A JP 23825583A JP H0160596 B2 JPH0160596 B2 JP H0160596B2
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- artificial leather
- polyurethane resin
- nylon
- laminate
- 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
Links
- 239000000835 fiber Substances 0.000 claims description 57
- 239000002649 leather substitute Substances 0.000 claims description 46
- 229920001778 nylon Polymers 0.000 claims description 40
- 239000004677 Nylon Substances 0.000 claims description 38
- 229920005749 polyurethane resin Polymers 0.000 claims description 35
- 239000004745 nonwoven fabric Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 27
- 239000002904 solvent Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000004080 punching Methods 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 6
- 229920001410 Microfiber Polymers 0.000 description 21
- 239000010410 layer Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 18
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 15
- 239000010985 leather Substances 0.000 description 12
- 210000003491 skin Anatomy 0.000 description 12
- 239000000839 emulsion Substances 0.000 description 7
- 239000004744 fabric Substances 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- -1 polyethylene terephthalate Polymers 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 230000001112 coagulating effect Effects 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 239000003658 microfiber Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 229920001748 polybutylene Polymers 0.000 description 2
- 229920001610 polycaprolactone Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920003225 polyurethane elastomer Polymers 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- ZXHZWRZAWJVPIC-UHFFFAOYSA-N 1,2-diisocyanatonaphthalene Chemical compound C1=CC=CC2=C(N=C=O)C(N=C=O)=CC=C21 ZXHZWRZAWJVPIC-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- KIQKWYUGPPFMBV-UHFFFAOYSA-N diisocyanatomethane Chemical compound O=C=NCN=C=O KIQKWYUGPPFMBV-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000921 polyethylene adipate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Description
【発明の詳細な説明】 本発明は人工皮革用基材の製造方法に関する。[Detailed description of the invention] The present invention relates to a method for producing a base material for artificial leather.
従来より人工皮革用基材としては0.5デニール
以上の短繊維ウエツブにゴムラテツクスやポリウ
レタンエラストマー溶液等を含浸させた後、乾
燥、凝固させた所謂不織布が用いられており、該
不織布に表皮層を設けて人工皮革としていた。し
かしながらこの種の不織布は、短繊維ウエツブに
おける繊維間の空隙が大きく、特に表面部分には
ゴムラテツクスやポリウレタンエラストマーが十
分に含浸され難いため凹凸ができて表面平滑性に
乏しく、しかも空隙の多いことにより密度が小さ
いため、このような不織布を基材として用いた人
工皮革は、不織布表面の凹凸が表皮層を通して外
側に表われる結果、外観を損ね、天然皮革様の風
合、感触に乏しいものであつた。 Conventionally, so-called non-woven fabrics have been used as base materials for artificial leather, which are short fiber webs of 0.5 denier or more impregnated with rubber latex or polyurethane elastomer solutions, etc., and then dried and coagulated. It was made of artificial leather. However, this type of nonwoven fabric has large voids between the fibers in the short fiber web, making it difficult to sufficiently impregnate the rubber latex or polyurethane elastomer in the surface area, resulting in unevenness and poor surface smoothness. Due to its low density, artificial leather using such non-woven fabric as a base material has irregularities on the surface of the non-woven fabric that appear outward through the skin layer, impairing its appearance and lacking in the texture and feel of natural leather. Ta.
これらの欠点を解消するために分割繊維や海島
繊維等の極細繊維を用いた高密度不織布上に表面
平滑性向上の目的でポリウレタン樹脂からなるミ
クロポーラス層を形成し、更にこの上に表皮層を
設けた人工皮革も知られているが、この種の不織
布にあつても表面平滑性は未だ十分なものとはい
えず、このためミクロポーラス層を設けることに
よつて人工皮革表面は天然皮革様の風合を一応有
するものの、折り曲げ等によつて人工皮革表面に
不自然なシワが入り易く商品価値低下をきたす欠
点がある。しかも分割繊維や海島繊維等の極細繊
維は製造工程が煩雑であるためコスト高となり、
このような高コストの繊維よりなる不織布上に更
にミクロポーラス層を設ける工程を必要とするこ
の種の人工皮革は高価で汎用的とは言い難い面が
あつた。 In order to eliminate these drawbacks, a microporous layer made of polyurethane resin is formed on a high-density nonwoven fabric using ultrafine fibers such as split fibers and sea-island fibers to improve surface smoothness, and a skin layer is further added on top of this. Artificial leather is also known, but even with this type of nonwoven fabric, the surface smoothness is still not sufficient. Therefore, by providing a microporous layer, the surface of artificial leather can be made to resemble natural leather. However, it has the disadvantage that unnatural wrinkles tend to form on the surface of artificial leather due to bending, etc., which reduces its commercial value. Moreover, ultrafine fibers such as split fibers and sea-island fibers require complicated manufacturing processes, resulting in high costs.
This type of artificial leather, which requires a step of further forming a microporous layer on a nonwoven fabric made of such high-cost fibers, is expensive and cannot be said to be widely used.
一方、メルトブロー法によれば簡単に極細繊維
を製造することができ、分割繊維、海島繊維のか
わりにメルトブロー法により紡糸された極細繊維
を用いれば、不織布、ひいては人工皮革のコスト
低減を図ることができるが、メルトブロー法は特
に延伸処理を施さずに繊維化するため、繊維の強
度が不十分であり、単に分割繊維、海島繊維のか
わりにメルトブロー法による極細繊維を用いたの
みでは強度に優れた人工皮革を得ることはできな
かつた。 On the other hand, the melt-blowing method allows the production of ultra-fine fibers easily, and if ultra-fine fibers spun by the melt-blowing method are used instead of split fibers or sea-island fibers, it is possible to reduce the cost of nonwoven fabrics and even artificial leather. However, because the melt-blown method converts fibers into fibers without any particular stretching process, the strength of the fibers is insufficient.If only ultrafine fibers produced by the melt-blown method were used instead of split fibers or sea-island fibers, it would not be possible to achieve excellent strength. It was not possible to obtain artificial leather.
本発明は上記の点に鑑みなされたもので、きわ
めて天然皮革に似た風合、感触を有する人工皮革
を得ることのできる人工皮革用基材を安価に提供
し得る人工皮革用基材の製造方法を提供すること
を目的とする。 The present invention has been made in view of the above points, and is the production of a base material for artificial leather that can provide a base material for artificial leather at a low cost that can produce artificial leather having a texture and feel very similar to natural leather. The purpose is to provide a method.
即ち本発明は0.5デニール以上の短繊維よりな
る短繊維交絡体に、メルトブロー法により紡糸さ
れた0.5デニール未満の６−ナイロン極細繊維よ
りなるナイロンウエツブを重ね合わせニードルパ
ンチングにより両者を交絡一体化して交絡積層体
を得、ついで該交絡積層体にポリウレタン樹脂溶
液を含浸せしめた後脱溶媒してポリウレタン樹脂
を凝固せしめて得た不織布の前記ナイロンウエツ
ブを重ね合わせた側の表面を加熱体表面に接触さ
せてポリウレタン樹脂と交絡積層体表面層の繊維
とを融着一体化せしめることを特徴とする人工皮
革用基材の製造方法を要旨とする。 That is, in the present invention, a nylon web made of ultrafine 6-nylon fibers of less than 0.5 denier spun by melt blowing is superimposed on a short fiber entangled body made of short fibers of 0.5 denier or more, and the two are entangled and integrated by needle punching. Obtain an entangled laminate, then impregnate the entangled laminate with a polyurethane resin solution, and then remove the solvent to solidify the polyurethane resin. The surface of the nonwoven fabric on which the nylon web is overlapped is placed on the surface of the heating element. The gist of the present invention is a method for producing a base material for artificial leather, which is characterized in that the polyurethane resin and the fibers of the surface layer of the intertwined laminate are brought into contact with each other to fuse and integrate them.
本発明においてはまず短繊維交絡体と極細繊維
との交絡積層体を得る。極細繊維としては安価に
提供され、かつ後述するポリウレタン系樹脂との
融着一体化が容易に行ない得ることからメルトブ
ロー法により紡糸された0.5デニール未満の６−
ナイロン極細繊維が用いられる。上記交絡積層体
は0.5デニール以上の短繊維よりなる短繊維交絡
体に上記メルトブロー法により紡糸された0.5デ
ニール未満の６−ナイロン極細繊維よりなるナイ
ロンウエツブを重ね合わせ、ニードルパンチング
を行ない短繊維と極細繊維とを交絡一体化せしめ
て得られる。ニードルパンチングは短繊維交絡体
上にメルトブロー法による極細繊維ウエツブを重
ね合せ両面より行うか、又は、充分な強度を有す
る短繊維交絡体上にメルトブロー法による極細繊
維ウエツブを重ね合せ該メルトブロー法極細繊維
側からのみニードルパンチングを行つても良い。
表面の平滑性及び緻密度の点から後者の方法が好
ましい。メルトブロー法極細繊維はニードルパン
チングの際、きわめて切断しやすく繊維の移動も
少なく、表面近くに集中して存在するため短繊維
交絡体の空隙を該メルトブロー法極細繊維の切断
片が充填し、極めて緻密で充実感のある表面平滑
性良好な交絡積層体が得られる。 In the present invention, first, an intertwined laminate of intertwined short fibers and ultrafine fibers is obtained. As ultrafine fibers, 6-denier fibers of less than 0.5 denier are spun by the melt-blowing method because they are inexpensive, and can be easily fused and integrated with polyurethane resins, which will be described later.
Nylon ultrafine fibers are used. The above intertwined laminate is produced by superimposing a nylon web made of 6-nylon ultrafine fibers of less than 0.5 denier spun by the melt blowing method on a short fiber entangled body made of short fibers of 0.5 denier or more, and then needle-punching the short fibers. Obtained by intertwining and integrating ultrafine fibers. Needle punching is carried out from both sides by superimposing a melt-blown ultra-fine fiber web on a short fiber tangled body, or by superimposing a melt-blown ultra-fine fiber web on a short fiber tangled body with sufficient strength. Needle punching may be performed only from the side.
The latter method is preferred from the viewpoint of surface smoothness and density. Melt-blown ultra-fine fibers are extremely easy to cut during needle punching, with little fiber movement, and are concentrated near the surface, so the cut pieces of melt-blown ultra-fine fibers fill the voids in the short fiber entanglement, creating an extremely dense structure. An entangled laminate with a full feeling and good surface smoothness can be obtained.
上記交絡積層体を構成する短繊維交絡体は目付
量50〜250ｇ／m2が好ましく、短繊維の繊度は0.5
〜3.0デニールが好ましく、特に0.5〜1.5デニール
であることが好ましい。短繊維としては６−ナイ
ロン、６，６−ナイロン、ポリエチレンテレフタ
レート等よりなるものが挙げられるが、特に６−
ナイロン短繊維が好ましい。またメルトブロー法
による極細繊維ナイロンウエツブは目付量20〜
100ｇ／m2のものが好ましく、６−ナイロン極細
繊維の繊度は0.001〜0.5デニール未満、特に0.001
〜0.1デニールのものが好ましい。ナイロンウエ
ツブの目付量が20ｇ／m2未満となると不織布表面
の緻密性に低下をきたし易く、またナイロンウエ
ツブの目付量が増加すると表面の平滑性はより向
上するが、目付量が100ｇ／m2を超えると不織布
の強度が低下し易い。 The intertwined short fibers constituting the above-mentioned intertwined laminate preferably have a basis weight of 50 to 250 g/ m2 , and the fineness of the short fibers is 0.5.
~3.0 denier is preferred, particularly 0.5-1.5 denier. Examples of short fibers include those made of 6-nylon, 6,6-nylon, polyethylene terephthalate, etc., but especially 6-nylon.
Nylon staple fibers are preferred. In addition, the ultrafine fiber nylon web produced by the melt blow method has a basis weight of 20~
100 g/m 2 is preferable, and the fineness of the 6-nylon ultrafine fiber is 0.001 to less than 0.5 denier, especially 0.001
~0.1 denier is preferred. If the basis weight of the nylon web is less than 20 g/m 2 , the density of the surface of the nonwoven fabric will tend to deteriorate, and as the basis weight of the nylon web increases, the surface smoothness will improve, but if the basis weight is less than 100 g/m 2 If it exceeds m2 , the strength of the nonwoven fabric tends to decrease.
次いで上記交絡積層体にポリウレタン樹脂溶液
を含浸せしめた後脱溶媒してポリウレタン樹脂を
凝固せしめ不織布を得るが、この方法としてはポ
リウレタン樹脂のジメチルフオルムアミド溶液を
交絡積層体に含浸させた後、交絡積層体を水中に
浸漬し、水にジメチルフオルムアミドを溶解除去
してポリウレタン樹脂を凝固せしめ乾燥する等の
方法が採用される。ここで用いられるポリウレタ
ン樹脂としては例えばポリエチレンアジペート、
ポリブチレンアジペート、ポリエチレンブチレン
アジペート、ポリεカプロラクトン等のポリエス
テルポリオール、ポリプロピレングリコール、ポ
リブチレングリコール等のポリエーテルポリオー
ルあるいはこれらの混合物、更にポリεカプロラ
クトン−ポリブチレングリコールブロツクコポリ
マー等とジフエニルメタンジイソシアネート、ヘ
キサメチレンジイソシアネート、ナフタレンジイ
ソシアネート、トリレンジイソシアネート等のポ
リイソシアネートとを反応せしめてなるポリウレ
タン樹脂が挙げられるが、６−ナイロンの軟化点
と同程度かそれ以下の軟化点を有するものが好ま
しい。これらポリウレタン樹脂には必要に応じて
顔料、抗酸化剤、紫外線吸収剤、柔軟剤や界面活
性剤、脂肪酸、アルコール等の脱溶媒速度調整剤
等を添加することができる。またポリウレタン樹
脂溶液を含浸せしめる前に交絡積層体にパラフイ
ンエマルジヨン、ワツクスエマルジヨン、シリコ
ーンエマルジヨン等による含浸処理を施すことに
より、不織布の柔軟性、引裂強度向上を図ること
ができる。更にポリウレタン樹脂を含浸せしめて
凝固させて得た不織布にシリコーンエマルジヨ
ン、パラフインエマルジヨン、ワツクスエマルジ
ヨン、弗素系撥水撥油剤エマルジヨン等を含浸せ
しめて処理することにより不織布の防水性向上、
風合調整等を図ることができる。 Next, the entangled laminate is impregnated with a polyurethane resin solution, and then the solvent is removed to coagulate the polyurethane resin to obtain a nonwoven fabric.This method involves impregnating the entangled laminate with a dimethyl formamide solution of polyurethane resin, and then removing the solvent from the entangled laminate. A method is employed in which the laminate is immersed in water, dimethyl formamide is dissolved and removed in the water, the polyurethane resin is coagulated, and then dried. Examples of the polyurethane resin used here include polyethylene adipate,
Polyester polyols such as polybutylene adipate, polyethylene butylene adipate, poly epsilon caprolactone, polyether polyols such as polypropylene glycol, polybutylene glycol, or mixtures thereof, poly epsilon caprolactone-polybutylene glycol block copolymers, etc., diphenylmethane diisocyanate, hexa Examples include polyurethane resins made by reacting polyisocyanates such as methylene diisocyanate, naphthalene diisocyanate, and tolylene diisocyanate, but those having a softening point comparable to or lower than that of 6-nylon are preferred. Pigments, antioxidants, ultraviolet absorbers, softeners, surfactants, fatty acids, alcohols, and other solvent removal rate regulators can be added to these polyurethane resins as necessary. Furthermore, by impregnating the entangled laminate with paraffin emulsion, wax emulsion, silicone emulsion, etc. before impregnating it with the polyurethane resin solution, the flexibility and tear strength of the nonwoven fabric can be improved. Furthermore, the waterproof property of the nonwoven fabric can be improved by impregnating and treating the nonwoven fabric obtained by impregnating and coagulating polyurethane resin with silicone emulsion, paraffin emulsion, wax emulsion, fluorine-based water and oil repellent emulsion, etc.
It is possible to adjust the texture, etc.
本発明においては上記交絡積層体にポリウレタ
ン樹脂を含浸、凝固せしめて得られる不織布のナ
イロンウエツブを重ね合わせた側の表面を加熱体
表面に接触させてポリウレタン樹脂と交絡積層体
表面層の繊維（主として６−ナイロン極細繊維）
とを融着一体化せしめる。加熱体としては、熱ロ
ール、熱板等が用いられる。このようにしてポリ
ウレタン樹脂と交絡積層体表面層の繊維とを融着
一体化せしめることによりきわめて平滑性に優
れ、緻密で充実感に富んだ表面を有する人工皮革
用基材が得られる。 In the present invention, the surface of the layered nylon web of the nonwoven fabric obtained by impregnating and coagulating the polyurethane resin into the entangled laminate is brought into contact with the surface of the heating element to mix the polyurethane resin and the fibers of the surface layer of the entangled laminate ( Mainly 6-nylon microfiber)
and are fused and integrated. As the heating body, a heat roll, a hot plate, etc. are used. By fusing and integrating the polyurethane resin and the fibers of the surface layer of the interlaced laminate in this manner, an artificial leather base material having an extremely smooth, dense, and full surface can be obtained.
本発明において得られる人工皮革基材は該基材
の平滑な表面に直接表皮層を設けるか、またはミ
クロポーラス層を設けた後表皮層を設け、表皮層
に着色、エンボス等を施すことにより人工皮革が
得られるがミクロポーラス層を設けずとも天然皮
革に酷似の風合、感触を有する優れた人工皮革が
得られる。 The artificial leather base material obtained in the present invention can be manufactured by directly providing a skin layer on the smooth surface of the base material, or by providing a microporous layer, followed by a skin layer, and applying coloring, embossing, etc. to the skin layer. Leather can be obtained, but even without providing a microporous layer, excellent artificial leather can be obtained that has a texture and feel that closely resembles natural leather.
以上説明したように本発明によれば平滑性に優
れ、緻密で充実感のある人工皮革用基材を安価に
製造することができ、この人工皮革用基材を用い
た人工皮革は天然皮革に酷似の風合、感触を現出
できる効果を有し、本発明は人工皮革用基材の製
造方法としてきわめて有益なものである。 As explained above, according to the present invention, it is possible to inexpensively produce a base material for artificial leather that has excellent smoothness, is dense, and has a solid feel, and the artificial leather using this base material for artificial leather is similar to natural leather. This invention has the effect of producing a very similar texture and touch, and is extremely useful as a method for producing a base material for artificial leather.
以下に実施例、比較例を挙げて本発明を更に詳
細に説明する。 The present invention will be explained in more detail by giving examples and comparative examples below.
実施例 １
繊維長51mm、繊度1.5デニールの６−ナイロン
短繊維よりなる目付量50ｇ／m2の短繊維交絡体
に、メルトブロー法により紡糸された平均繊度
0.03デニールの６−ナイロン極細繊維よりなる目
付量50ｇ／m2のナイロンウエツブを重ね合わせナ
イロンウエツブ側よりニードルパンチングを行な
い両者を交絡一体化せしめ、厚さ0.7mmの交絡積
層体を得た。この交絡積層体にポリεカプロラク
トンと４，4′−ジフエニルメタンジイソシアネー
トとを反応せしめてなるポリウレタン樹脂（乾式
皮膜100％モジユラス40Kg／cm2、熱軟化点175℃）
の10％ジメチルフオルムアミド溶液を含浸せしめ
た後、25℃の水中に浸漬して脱溶媒し、ポリウレ
タン樹脂を凝固させ、次いで120℃で通風乾燥さ
せて不織布を得た。この不織布の繊維に対するポ
リウレタン樹脂の重量比は100：45であつた。次
いでこの不織布の６−ナイロン極細繊維よりなる
ナイロンウエツブを重ね合わせた側の表面を150
℃の表面温度の熱ロールによりプレスしてポリウ
レタン樹脂と不織布表面層の繊維を融着一体化し
て人工皮革用基材を得た。この人工皮革用基材表
面は平滑性に優れ、緻密で充実感のあるものであ
つた。Example 1 A short fiber entangled body with a fabric weight of 50 g/m 2 made of 6-nylon short fibers with a fiber length of 51 mm and a fineness of 1.5 denier was spun by the melt blow method to have an average fineness.
Nylon webs made of 6-nylon ultrafine fibers of 0.03 denier and having a basis weight of 50 g/m 2 were stacked together and needle punched from the nylon web side to intertwine and integrate the two to obtain an interlaced laminate with a thickness of 0.7 mm. . A polyurethane resin made by reacting polyε-caprolactone and 4,4'-diphenylmethane diisocyanate with this intertwined laminate (100% dry coating, modulus 40 Kg/cm 2 , thermal softening point 175°C)
After impregnating the fabric with a 10% dimethyl formamide solution, the fabric was immersed in water at 25°C to remove the solvent, coagulate the polyurethane resin, and then dried with ventilation at 120°C to obtain a nonwoven fabric. The weight ratio of polyurethane resin to fibers in this nonwoven fabric was 100:45. Next, the surface of this nonwoven fabric on the side where the nylon web made of 6-nylon ultrafine fibers was overlaid was
The polyurethane resin and the fibers of the surface layer of the nonwoven fabric were fused and integrated by pressing with a heated roll having a surface temperature of 0.degree. C. to obtain a base material for artificial leather. The surface of this base material for artificial leather had excellent smoothness, was dense, and had a solid feel.
次に離型紙（大日本印刷(株)製：DNTP−AP−
Ｔ−DE−３）上に易染性ポリウレタン樹脂（三
洋化成(株)製：サンプレンLQ3524DX3）を固形分
で８ｇ／m2となるように塗布し、110℃で乾燥せ
しめた後、ポリウレタン樹脂層上に白色に着色し
た二液型接着剤（大日本インキ(株)製：クリスボン
4070）を固形分で60ｇ／m2となるように塗布し、
70℃で３分間加熱して溶媒を除去した後接着剤層
側を上記人工皮革用基材の熱プレスを施した面に
当接せしめて圧着し、室温にて放置し接着剤の硬
化が完全に終了した後離型紙を剥離し、基材に表
皮層を転写形成した。表皮層をKayakalan
Brown GL（日本化薬(株)製）を用いてジツカーに
て染色したところ天然皮革に酷似の外観、風合、
感触を有する人工皮革が得られた。 Next, release paper (manufactured by Dai Nippon Printing Co., Ltd.: DNTP-AP-
T-DE-3) was coated with easily dyeable polyurethane resin (Samprene LQ3524DX3 manufactured by Sanyo Kasei Co., Ltd.) at a solid content of 8 g/m 2 and dried at 110°C, followed by a polyurethane resin layer. A two-component adhesive colored white on top (manufactured by Dainippon Ink Co., Ltd.: Crisbon)
4070) at a solid content of 60g/ m2 ,
After heating at 70°C for 3 minutes to remove the solvent, the adhesive layer side was brought into contact with the heat-pressed surface of the artificial leather base material and pressed, and left at room temperature for complete hardening of the adhesive. After completing the process, the release paper was peeled off, and the skin layer was transferred and formed on the base material. Kayakalan epidermal layer
When dyed using Brown GL (manufactured by Nippon Kayaku Co., Ltd.) with Zitzker, the appearance and texture are very similar to natural leather.
Artificial leather with a tactile feel was obtained.
実施例 ２
繊維長60mm、繊度1.5デニールの６−ナイロン
短繊維よりなる目付量100ｇ／m2の短繊維交絡体
に、メルトブロー法により紡糸された平均繊度
0.03デニールの６−ナイロン極細繊維よりなる目
付量50ｇ／m2のナイロンウエツブを重ね合わせナ
イロンウエツブ側よりニードルパンチングを行な
い両者を交絡一体化せしめ、厚さ1.1mmの交絡積
層体を得た。この交絡積層体に実施例１と同様の
ポリウレタン樹脂を含浸、凝固せしめ不織布を
得、該不織布のナイロンウエツブを重ね合わせた
側の表面を実施例１と同様の方法により熱プレス
してポリウレタン樹脂と不織布表面層の繊維とを
融着一体化して人工皮革用基材を得た。この人工
皮革用基材の表面は平滑性に優れ、緻密で充実感
のあるものであつた。Example 2 A short fiber entangled body with a basis weight of 100 g/m 2 consisting of 6-nylon short fibers with a fiber length of 60 mm and a fineness of 1.5 denier was spun by the melt blow method.
Nylon webs made of 0.03 denier 6-nylon ultrafine fibers with a basis weight of 50 g/m 2 were stacked together and needle punched from the nylon web side to intertwine and integrate the two to obtain an interlaced laminate with a thickness of 1.1 mm. . This intertwined laminate was impregnated with the same polyurethane resin as in Example 1 and coagulated to obtain a nonwoven fabric, and the surface of the nonwoven fabric on the side where the nylon web was overlapped was hot pressed in the same manner as in Example 1 to make the polyurethane resin. A base material for artificial leather was obtained by fusing and integrating the fibers of the surface layer of the nonwoven fabric. The surface of this base material for artificial leather was excellent in smoothness, and had a dense and solid feel.
次に平滑な表面を有する離型紙（大日本印刷(株)
製DNTP−AP−Ｔ−DE−３）上にポリウレタ
ン樹脂（ハニー化成(株)製：ハニトツプ7256E）の
8μの皮膜を形成し、更にこの上にポリウレタン
樹脂（大日本インキ化学工業(株)製：クリスボン
5516S、溶剤：ジメチルフオルムアミド、メチル
エチルケトン）を塗布し60℃で２分間乾燥させて
着色皮膜を形成した後、該着色皮膜側を上記人工
皮革用基材の熱プレスを施した面に当接せしめて
圧着し室温で24時間放置後離型紙を剥離し表皮層
を転写形成した。この表皮層上に150℃の彫刻ロ
ールでエンボスを施したところ天然皮革に酷似の
風合、感触を有する人工皮革が得られた。 Next, release paper with a smooth surface (Dainippon Printing Co., Ltd.)
DNTP-AP-T-DE-3) was coated with polyurethane resin (Honey Kasei Co., Ltd.: Honeytop 7256E).
A film of 8μ is formed, and on top of this a polyurethane resin (manufactured by Dainippon Ink and Chemicals Co., Ltd.: Crisbon) is applied.
5516S, solvent: dimethylformamide, methyl ethyl ketone) and dried at 60°C for 2 minutes to form a colored film, and then the colored film side was brought into contact with the heat-pressed surface of the above substrate for artificial leather. After pressing and leaving at room temperature for 24 hours, the release paper was peeled off and the skin layer was transferred and formed. When this skin layer was embossed with an engraving roll at 150°C, artificial leather with a texture and feel very similar to natural leather was obtained.
実施例 ３
繊維長60mm、繊度1.2デニールの６ナイロン短
繊維よりなる目付量200ｇ／m2の短繊維交絡体に、
メルトブロー法により紡糸された平均繊度0.05デ
ニールの６−ナイロン極細繊維よりなる目付量40
ｇ／m2のナイロンウエツブを重ね合わせ両側より
ニードルパンチングを行ない両者を交絡一体化せ
しめ厚さ1.2mmの交絡積層体を得た。この交絡積
層体に実施例１と同様のポリウレタン樹脂を含
浸、凝固せしめて不織布を得た。この不織布のナ
イロンウエツブを重ね合わせた側を実施例１と同
様の方法で熱プレスして表面平滑性に優れ、緻密
で充実感のある人工皮革用基材を得た。この基材
の熱プレスを施した面上に、ポリウレタン樹脂
（大日精化工業(株)製：レザミンCU−4210）のジメ
チルフオルムアミド溶液（固形分22％）を塗布し
た後水中に浸漬して脱溶媒しポリウレタン樹脂を
凝固せしめてミクロポーラス層を形成した。次い
でこのミクロポーラス層上に実施例１と同様にし
て表皮層を転写形成して人工皮革を得た。得られ
た人工皮革は天然皮革と酷似の風合、感触を有
し、折り曲げによつて表面に不自然なシワが生じ
ることもなかつた。Example 3 A short fiber entangled body with a basis weight of 200 g/m 2 was made of 6 nylon short fibers with a fiber length of 60 mm and a fineness of 1.2 denier.
Fabric weight: 40 made of 6-nylon microfiber with an average fineness of 0.05 denier spun using the melt blow method
g/m 2 nylon webs were overlapped and needle punched from both sides to intertwine and integrate them to obtain an interlaced laminate having a thickness of 1.2 mm. This intertwined laminate was impregnated with the same polyurethane resin as in Example 1 and coagulated to obtain a nonwoven fabric. The side of this nonwoven fabric overlaid with nylon webs was hot pressed in the same manner as in Example 1 to obtain a substrate for artificial leather with excellent surface smoothness, denseness, and a sense of fullness. A dimethyl formamide solution (solid content 22%) of a polyurethane resin (manufactured by Dainichiseika Kagyo Co., Ltd.: Rezamin CU-4210) was applied to the heat-pressed surface of this base material, and then immersed in water. The solvent was removed and the polyurethane resin was solidified to form a microporous layer. Next, a skin layer was transferred and formed on this microporous layer in the same manner as in Example 1 to obtain artificial leather. The obtained artificial leather had a texture and feel very similar to natural leather, and no unnatural wrinkles were formed on the surface when folded.
比較例 １
繊維長51mm、繊度1.5デニールの６−ナイロン
短繊をニードルパンチングして得た目付量150
ｇ／m2の短繊維交絡体に実施例１と同様のポリウ
レタン樹脂を含浸、凝固せしめて不織布を得、つ
いで該不織布表面を実施例１と同様に熱プレスし
て人工皮革用基材を得た。この人工皮革用基材の
熱プレスを施した面は、緻密性、充実感に欠け、
また平滑性にも乏しかつた。つぎにこの人工皮革
用基材の熱プレスを施した面に実施例１と同様に
して表皮層を形成し人工皮革を得た。得られた人
工皮革は天然皮革様の風合、感触に乏しいもので
あつた。Comparative Example 1 Fabric weight 150 obtained by needle punching 6-nylon short fibers with a fiber length of 51 mm and a fineness of 1.5 denier.
A nonwoven fabric was obtained by impregnating and coagulating the same polyurethane resin as in Example 1 into a short fiber entanglement of g/m 2 , and then heat pressing the surface of the nonwoven fabric in the same manner as in Example 1 to obtain a base material for artificial leather. Ta. The heat-pressed surface of this base material for artificial leather lacks denseness and fullness,
It also lacked smoothness. Next, a skin layer was formed on the heat-pressed surface of this base material for artificial leather in the same manner as in Example 1 to obtain artificial leather. The obtained artificial leather lacked the texture and feel of natural leather.
比較例 ２
実施例１と同様の短繊維交絡体とナイロンウエ
ツブを同様の方法で交絡一体化せしめてなる交絡
積層体より実施例１と同様にして不織布を得た。
この不織布のナイロンウエツブを重ね合わせた側
に、熱プレス処理を施さずに実施例１と同様の方
法により表皮層を形成し人工皮革を得た。得られ
た人工皮革は基材表面の平滑性に乏しいことに起
因して天然皮革様の風合、感触に乏しいものであ
つた。Comparative Example 2 A nonwoven fabric was obtained in the same manner as in Example 1 from an intertwined laminate obtained by interlacing and integrating the same short fiber intertwined body and nylon web in the same manner as in Example 1.
A skin layer was formed on the side of the nonwoven fabric on which the nylon webs were superimposed, using the same method as in Example 1 without performing heat press treatment to obtain artificial leather. The obtained artificial leather lacked the texture and feel of natural leather due to the poor smoothness of the base material surface.
比較例 ３
繊維長51mm、繊度1.5デニールの６−ナイロン
短繊維よりなる目付量50ｇ／m2の短繊維交絡体
に、メルトブロー法により紡糸された平均繊度
0.03デニールのポリエステル極細繊維よりなる目
付量50ｇ／m2のポリエステルウエツブを重ね合わ
せ両側よりニードルパンチングを行ない交絡積層
体を得た。この交絡積層体より実施例１と同様の
方法で不織布を得、該不織布のポリエステルウエ
ツブを重ね合わせた側の面を170℃の加熱ロール
により熱プレスして人工皮革用基材を得た。この
人工皮革用基材は熱プレス処理を行なつた後もニ
ードルパンチングの際の針跡が残り表面平滑性に
乏しいものであつた。ついでこの人工皮革用基材
の熱プレス処理を施した面に実施例１と同様の方
法で表皮層を形成し、人工皮革を得た。得られた
人工皮革は天然皮革様の風合、感触に乏しいもの
であつた。Comparative Example 3 A short fiber entangled body with a fabric weight of 50 g/m 2 consisting of 6-nylon short fibers with a fiber length of 51 mm and a fineness of 1.5 denier was spun by the melt blow method.
Polyester webs made of ultrafine polyester fibers of 0.03 denier and having a basis weight of 50 g/m 2 were overlapped and needle punched from both sides to obtain an entangled laminate. A nonwoven fabric was obtained from this entangled laminate in the same manner as in Example 1, and the surface of the nonwoven fabric on the side where the polyester webs were overlapped was hot pressed using a heated roll at 170°C to obtain a base material for artificial leather. Even after the heat press treatment, this substrate for artificial leather still had needle marks from needle punching and had poor surface smoothness. Next, a skin layer was formed on the heat-pressed surface of this base material for artificial leather in the same manner as in Example 1 to obtain artificial leather. The obtained artificial leather lacked the texture and feel of natural leather.
Claims (1)
絡体に、メルトブロー法により紡糸された0.5デ
ニール未満の６−ナイロン極細繊維よりなるナイ
ロンウエツブを重ね合わせニードルパンチングに
より両者を交絡一体化して交絡積層体を得、つい
で該交絡積層体にポリウレタン樹脂溶液を含浸せ
しめた後脱溶媒してポリウレタン樹脂を凝固せし
めて得た不織布の前記ナイロンウエツブを重ね合
わせた側の表面を加熱体表面に接触させてポリウ
レタン樹脂と交絡積層体表面層の繊維とを融着一
体化せしめることを特徴とする人工皮革用基材の
製造方法。 ２ 短繊維交絡体が目付量50〜250ｇ／m2であり、
ナイロンウエツブが目付量20〜100ｇ／m2である
特許請求の範囲第１項に記載の人工皮革用基材の
製造方法。[Claims] 1. A nylon web made of ultrafine 6-nylon fibers of less than 0.5 denier spun by melt blowing is superimposed on a short fiber entangled body made of short fibers of 0.5 denier or more, and the two are entangled by needle punching. The intertwined laminate is integrated to obtain an intertwined laminate, and then the entangled laminate is impregnated with a polyurethane resin solution, and the solvent is removed to coagulate the polyurethane resin. The surface of the obtained nonwoven fabric on the side where the nylon web is overlapped is heated. A method for producing a base material for artificial leather, which comprises bringing the polyurethane resin into contact with the body surface to fuse and integrate the polyurethane resin and the fibers of the surface layer of the intertwined laminate. 2. The short fiber entangled body has a basis weight of 50 to 250 g/ m2 ,
The method for producing a base material for artificial leather according to claim 1, wherein the nylon web has a basis weight of 20 to 100 g/m 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23825583A JPS60134073A (en) | 1983-12-17 | 1983-12-17 | Production of base material for artificial leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23825583A JPS60134073A (en) | 1983-12-17 | 1983-12-17 | Production of base material for artificial leather |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60134073A JPS60134073A (en) | 1985-07-17 |
| JPH0160596B2 true JPH0160596B2 (en) | 1989-12-25 |
Family
ID=17027455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23825583A Granted JPS60134073A (en) | 1983-12-17 | 1983-12-17 | Production of base material for artificial leather |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60134073A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4128312B2 (en) * | 1999-02-24 | 2008-07-30 | 株式会社クラレ | Leather-like sheet with surface napping |
| CN104894880A (en) * | 2015-04-20 | 2015-09-09 | 天守(福建)超纤科技股份有限公司 | Super-soft hand-feeling super-fiber skin-imitated leather manufacturing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5063103A (en) * | 1973-10-02 | 1975-05-29 | ||
| JPS54122701A (en) * | 1978-03-12 | 1979-09-22 | Asahi Chemical Ind | Leather like sheet material and production thereof |
-
1983
- 1983-12-17 JP JP23825583A patent/JPS60134073A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5063103A (en) * | 1973-10-02 | 1975-05-29 | ||
| JPS54122701A (en) * | 1978-03-12 | 1979-09-22 | Asahi Chemical Ind | Leather like sheet material and production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60134073A (en) | 1985-07-17 |
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