JPS6071777A - Silvered artificial leather - Google Patents

Abstract

PURPOSE:Silvered artificial leather that is produced by forming in turns a porous resin layer and a nonporous resin layer of specific thickness, respectively, on the surface layer of a densely interwinding fine fiber and/or bundle fabric thus showing excellent smoothness, expecially when extended. CONSTITUTION:The base material has, at least on one surface, a densely intertwinding fiber structure in which very fine fibers or bundles of less than 0.2, perferably less than 0.05 denier interwinding one another so that the distance between intercrossing points of fibers is less than 200 micros, preferably less than 100 microns. Then, a porous resin layer which is mainly composed of polyurethane elastomer of 3-500 micron, preferably 10-200 micron thickness (preferably containing gigantic pores from view points of moisture and gas permeation) and further the top coat of 0.1-20, preferably 1-10 micron thick nonporous resin layer are formed on the surface.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a silver material with excellent smoothness, especially smoothness during elongation.
Regarding artificial leather.

Conventionally, a porous layer of a resin such as polyurethane, nylon, vinyl chloride, or polyamino acid is provided on a base material such as a non-woven fabric or a woven or knitted fabric.
A variety of materials have been proposed and put into practical use as moisture-permeable leather substitutes by adding a layer to the material. The quality of such a substitute material is largely determined by the Ii fiber structure constituting the base fabric and the pores M4'M of the laminated layer 11A. In recent years, advances have been made in the processing technology of nonwoven fabrics, the selection of the type of resin for the welt layer, and the technology for forming porous layer structures, and products with good appearance and quality are becoming available.

However, the point where such leather substitutes are most inferior to the natural leather that serves as a model is the process of molding the collars of clothing, the toes of shoes, and the elongation that occurs sequentially in the process of molding the toes of shoes. 5
tL Poor lubricity C exists. This prevents the occurrence of unevenness (so-called roughness or A-range peel) during stretching during molding! 1lII. Many proposals have been made to improve this property, including inserting fabrics, impregnating polymeric substances, shrinking fibers, heat pressing, and using temporary fixing agents to tightly distribute the binder (= I). However, this was not a wooden solution and was still insufficient.

Flat like this? 11 In order to prevent defects, the thickness of the m layer, especially the porous layer, is increased to deal with the problem.J35
However, the rubber feel 15 has a strong rebound feeling and is of inferior quality.
I haven't been yed.

The present inventors have carried out extensive studies with the aim of obtaining a leather-like sheet material that has a soft texture and prevents the occurrence of unevenness during stretching, and is suitable for clothing and shoe making materials, and has developed the present invention. reached.

The objective of the present invention is achieved by the following configuration.

A linear layer structure in which the distance between the fiber entanglement points of the ultrafine fiber d3 and/or a bundle thereof is 200μ or less is applied to at least one surface layer of the J8 fibrous profiteer layer. A porous resin layer having a thickness of 3 to 500 μm is provided on top, and the L 1. An artificial netsuke that is characterized by being provided with a non-porous resin layer with a thickness of 0.1 to 20μ.

In other words, the silver (=J artificial leather) of the present invention uses a super-III fiber cord and/or a base material b that allows a dense fiber structure of a bundle thereof, which has not been seen before. It is characterized by IC material C, and has a high density that is completely different from the density of ordinary needle-punched non-woven fabrics or woven or knitted fabrics, and this 114-structure fiber greatly helps eliminate defects such as the above-mentioned irregularities. In addition, 1 AIi siliceous matrix layer is provided, and a porous resin layer with a specific thickness and a dense LF
Due to the synergistic effect of the construction, defects such as roughness are eliminated.
7 There is a headline C that will be erased. In addition, according to the present invention, the porous resin layer with a specific thickness provided in the porous resin layer 11 makes use of the flexible and good control surface properties of the porous resin R1, and also has scratch resistance, gloss, etc. The appearance of (e
[Rel,: Gintsukin] skin Φ is provided.

For the ultra-fine fibers used in the base material layer of the present invention, ultra-fine fibers produced internally by a method such as mel blow or super draw may be used, but if the fibers become thin, spinning becomes difficult. Because it is stable, and difficult to handle, we use the ultrafine fiber-forming type fibers described below, which are transformed into ultrafine fibers at an appropriate time in the processing culm. Delicious. That is, 1l used in the present invention
Ii thin! 11i iff-forming type fibers are, for example, ultra-fine fibers immediately after spinning; , multilayer bimetal type! l
I string, a large number of polar 11I fibers that are continuous in the direction of the donor axis are arranged and assembled and combined with other components.
Polymer mutual array fibers that form book fibers, etc.
A mixture or combination C of two or more of these fibers may be used. Ultrafine fiber-forming fibers with a cross section in which multiple cores are mediated and/or partially bonded by other components are subject to physical action or removal of bonded components. It is preferably used because ultrafine fibers can be easily obtained. Therefore, after dissolving and removing at least one component, it is less than 0.2 denier, preferably 0.0 denier.
From multi-component polymer mutual arrays and seabird type ultrafine fiber forming fibers such as sea-island type mixed spinning IJi navy blue, fiber bundles mainly consisting of ultrafine fibers of 5 deniers or less can be obtained.
In particular, it is preferably used because it yields silver (=J artificial leather) which has an excellent effect of preventing rust and has a supple texture. This is because the array IJ is arranged without being glued to each other, so it is highly flexible.
+ Fibers enhance Ili fibril formation ability. Consisting of H'sI molecular substances, for example, polyamides such as nylon 5, buoyin 66, nylon 12, copolymerized nylon, polyethylene terephthalate 1-, copolymerized polyethylene terephthalate 1-, polybutylene terephthalate. Examples include polyesters such as copolymerized polystyrene) phthalate, polyurethanes such as polyethylene and polypropylene, polyurethanes, and polyacrylonyl and hinyl Φ combinations. In addition, examples of the bonding component or the dissolving and removing component of the ultrafine fibers include polystyrene, polypropylene, polypropylene, polyamide, polyurethane, copolymerized polyJ-brene-j phthalate that is easily soluble in alkaline solutions, and copolymerized polyvinyl Alni l, j
l-polymerized polyvinyl alcohol, styrene-acrylic [1
A nitrile copolymer, a copolymer of styrene and a) class alni-1-ruethal J3 of 7-acrylic acid and/or a higher alcohol ester of methacrylic acid, etc. are used.

In terms of ease of spinning and ease of dissolution and removal, boristyrene, styrene-acrylonyl copolymer, higher flucol esters of styrene and acrylic acid, and/or higher nonorcol esters of methacrylic acid are preferred. Copolymers with are often used. Further, copolymers of styrene and higher alcohol esters of acrylic acid and/or higher alcohol esters of methacrylic acid are particularly preferably used because they have a high drawing ratio and can yield fibers with a high strength of 1α. 1 = The point of branching and slicing the ultrafine fibers C1 The combination of polyethylene glycol and the like is added to the binding component or the dissolving and removing component by 0, 5 to 3.
It is preferable to use it in combination with 0% heavy lead. To 4 I
The fineness of the II fiber-forming type fiber is limited to 14, but there is no possibility that it will decrease by 1゛, but from the viewpoint of stability during spinning, seams 1 to formation, and J-shape, etc. preferable.

The ultrafine fibers in the base vU surface layer of the present invention have a degree of
．． Preferably, it has a denier of 2 deniers or less. If it is thicker than 0.2 denier, the stiffness of the fibers may be too high, and the flexibility of the leather or the form of wrinkles on the surface may be affected. O52 denier or less,
Preferably, by using ultrafine fibers of 0.05 denier or less, it is possible to create artificial leather with fine intertwining of the 11 fibers and good smoothness at elongation of 11'f. iru.

The fiber structure in at least the outer surface layer of the artificial leather base 4A of the present invention requires that the frame fence fibers 113J and/or a bundle thereof are densely intertwined with the phase U.

1, that is, the fiber entanglement density is high. II
The fiber entanglement density is 1. One way to do this is to measure the fiber entanglement λ opening fJl, which will be described later.However, for the fibers in the surface layer of the foundation, the measurement value of this method C indicates an entanglement density of 200μ or less. 3, this value is 20
Those with a structure larger than 0 μ, for example, those with a fiber structure in which the entanglement of the wire layer 1 is needle bumped (wavy) with few entanglements, or those with a structure in which thin fibers or bundles thereof are arranged in a plane on the illumination surface, or In addition, the bundles of extremely thin fibers grow densely in a fluff-like manner on the surface of the base material, and those with a structure made by sprinkling this on to form hematopoiesis have almost no or only a small amount of fiber entanglement (2), so when pulled, the fibers The gaps between fibers become larger, the coating layer collapses, and roughness becomes more apparent.In order to eliminate this defect 5:a, the distance between fiber entanglement points should be
It is necessary that it is 0μ or less. More preferable results can be obtained when the thickness is 100μ or more.

Here C, the distance between the fiber entanglement points is determined by the following method.
i'i is a measure of the density of intertwining of fibers, and the smaller the value, the more dense the intertwining. This figure is an enlarged schematic diagram of the constituent fibers when the constituent fibers in the surface layer of the beam material are observed from the surface side. Composition I! The fibers are 1"1, f2, f3..., and any two of them II navy blue 1'1, f2 are the intertwined reel points.
Then, go to the point where the fiber ILf2, which is above al, intersects with another fiber below, and take the intersection point a2h (intersection point of 1"2 and f3). Similarly, take a3, a4, a5...Next, 1 & line horizontal ranger 211a 2, a between the two intersecting points
2 a 3 , a 3 a 4 , a 4 a 5 ,
a5a6, a6a7. a7a3. a3a3, a3a7
, a7a9, a9a(i...) are measured, and the average value of these many measured values is referred to as RK Iff inter-interlacing point distance 1.

The object of the present invention can be achieved if the material is made of four materials based on the method for opening the m-dark blue intertwined points, and the surface layer of the thread is made of dense ultrafine fibers of C1200μ or less and/or intertwining of bundles thereof. . 144.4 The structure of the lower layer of the surface layer is not particularly limited, and may be a non-woven structure, a knitted fabric structure, or a combination of these structures. When the non-woven A11 structure is in the first layer, the lower layer of the surface layer of the base material is also composed of the Ise silk fiber bundles and the extremely 11 fibers derived therefrom.
The fiber structure is intertwined with the base material surface layer and the lower layer and is substantially continuous.The sheet material has a unified texture and good strength. It is preferable.

Furthermore, the lower layer of the surface layer of the base material is mainly composed of ultrafine fiber bundles intertwined with each other, and the ultrafine l1li navy blue and/or bundles of the base material surface layer are the ultrafine fiber bundles of the lower layer branched and entangled more closely. and 41 for the base material surface layer and the lower layer.
Ift is substantially continuous J: A four-part fiber structure in which portions with different degrees of entanglement are unevenly distributed in the thickness direction of the ridge,
Netsuketo 1 leather, which has a sense of unity and a more flexible texture, is particularly preferably used.

(a) The material has a random non-woven structure of ultra-fine fibers, the surface of which is densely entangled according to the present invention, and the lower layer has a thickness that prevents the loose entanglement of the ultra-fine fibers. (b) A fabric with a fiber structure in which the degree of entanglement is unevenly distributed in one direction, (b) A fabric made by laminating ultra-fine fibers or ultra-fine fiber-forming fibers on one or both sides of a woven or knitted fabric using a paper-making method or a shaking-off method. The eel itself is made into a single piece, and the surface layer of the eel is made into a finely interwoven structure. A fiber structure in which the base material layer is formed using ultrafine fiber-forming fibers, and at least the surface layer is divided and densely intertwined can achieve a high degree of ultrafineness. However, it is difficult to obtain the fiber entanglement point opening of 200μ or less, which is required in the present invention, and silver oxide also makes the texture of the artificial leather hard, which is not very preferable. There is no problem in using it if the distance between the weave Ill intersection end points can be made to be 200μ or less.

The B-6ttA of the present invention is provided with a resin such as polyurethane chorus 1 by impregnation or filling.The amount of resin applied varies depending on the intended use of the sheet material. In case of using it as a coat, it is preferable to apply it in an amount of 0 to 80 parts per 10.00 parts of IBB of the fiber.

The amount may be even higher for shoes and materials. Generally 2
Used up to about 00 copies.

There are no particular restrictions on the adhesion structure of the resin, but wet coagulation can be used to create a porous structure. (1) Those that appear to be attached as emulsion particles are generally preferred.

": The high molecular weight polymer to be impregnated and filled into the fiber trade base. C is a conventionally known polyurethane or this polyurethane and natural rubber, styrene-butadiene copolymer, acrylonitrile-butadiene copolymer. A composition mainly composed of polyurethane mixed with rubber-based bullets such as neoprene is used, and these compositions are used in the form of a solution dissolved in a solvent or an aqueous dispersion.
This invention is not particularly limited.

Further, on the base material layer of the silver A1 artificial leather of the present invention, a porous resin consisting of a polymer of substantially the same type as the polyurethane-based polymer contained in the fiber base A layer 4A is formed. It has layers. However, from the viewpoint of strength, it is preferable that this porous resin layer be a microporous coating film, but from the viewpoint of moisture permeability and air permeability, a porous resin layer containing some macropores is preferable. In addition, the thickness of the porous resin layer is within the range of 3 to 00 microns depending on the base material (the fineness of the I11 fibers, the number of fibers or the degree of entanglement, the resin content M, etc.) It is desirable that 19 is more than 500 microns, the characteristics of the base layer (9) will be impaired, and only a product of inferior quality with a hard and rubbery feel will be obtained; Roughness cannot be sufficiently prevented if it is less than 1 minute.
The range is from 5 mm to 300 mm, most preferably from 10 mm to -200 mm.

Furthermore, in A3 of the present invention, top row 1 to layers are present on the porous resin layer. This layer is necessary to improve the flexibility of the porous resin layer, its good flexibility, and its poor appearance, such as scratch resistance and gloss.
It is preferably formed from a non-porous resin layer having non-porous v'1 or microholes. The thickness of the groove depends on the structure of the porous resin layer and the type of top coat layer resin, but it is 0. '1 to 20 microns. 20 Miku C
If the material is harder than the material, the surface will become harder and cracks will appear, the rubbery feel will become stronger, and the moisture permeability and air permeability will also deteriorate. More than 0.1 micron? +v decreases scratch resistance.

, preferably in the range of 0.5 microns to 15 microns, more preferably 1 micron to 10 microns.

1 The resin used for the heb coat layer is, for example, polyamide, polyester, polyvinyl chloride, polyacrylic acid Nisder copolymer, polyurethane, measles (butaib polyurethane, neorene, styrene-butadiene copolymer, acryloni) to Synthetic resins such as butadiene copolymers, polyamino acids, polyj-mino acid polyurethane copolymers, silicone resins, natural polymer resins, or mixtures of these resins. Add to the above multiple layers to create a multi-layer top coat layer.
Of course, this is the preferred method.

If necessary, plasticizers, fillers, stabilizers, dyes, crosslinking agents, etc. may be added to the porous resin layer and the top coat layer. I straining with additives is used sparingly because it provides a grain layer with a particularly soft texture and feel and good bending resistance f1.

The method for producing the silver f'' artificial leather of the present invention will be exemplified below.

First, the above-mentioned ultra full abrasion forming type fiber is manufactured using a spinning apparatus C shown in Japanese Patent Publication No. 44-18369, for example.
After forming the ultra-fine fibers into a fiber sheet, the web is formed by passing it through the cart and the J-slutper.
form. Alternatively, the extremely III fiber-forming type fibers are spun and subsequently stretched and placed randomly on a wire mesh;
Needle punch the 1YI web in the same way as above?
Form a non-woven fiber sheet. Alternatively, a non-woven material 11 made of neck fiber or another type III fiber-forming fiber shoulder 1,
The ultrafine fiber forming type fibers are placed on a woven fabric or a knitted fabric, and are entwined and inseparably integrated to form fiber sheets 1 to 1.

Next, the ultrafine fiber bundles generated by the high-speed fluid are intertwined densely with the ultrafine fibers and/or (1) in the fiber sheet thus obtained. (A special lifting platform may contain very fine solids, but water is most preferably used in terms of ease of handling, first thrust, and suspension of impact energy as a fluid.) Furthermore, depending on the purpose, it is also possible to use various battering machine solvents that can dissolve some of the components of the 41i navy blue, or aqueous alkali or acid solutions such as sodium hydroxide. The fluid is pressurized and sprayed from a small-diameter nozzle or narrowly spaced slits into a high-speed columnar or curtain-like flow, and is sprayed onto the fiber sheet 1-C to branch and entangle the fibers. The pressure point applied to the liquid differs depending on the degree of branching of the ultrafine fiber-forming fiber or the ultrafine fiber bundle, and for fibers with a low branching rate, it is 5 to 5.
70 Kg/r:M relatively low L1. '(Okay, for fibers that are difficult to branch, 70 to 3001 (9/
The high pressure of the CD is amazing. It is also possible to increase the degree of branching and entanglement by increasing the number of injections to 110 injections, and the pressure may be changed each time the injection is made. Use a pulsed flow or move the nozzle!
7j It is also good to spray from an oblique direction. After that, I
The lifting platform required for conversion to the pole 1111 [
A solvent 'Cf'J that fuses some components of the formed m-fiber! The processed fiber sheet is treated to dissolve and remove some of the components.

In addition, if necessary, it is impregnated with a solution or dispersion of a resin such as polyurethane "Ruston" and coagulated by a wet or dry method. , here (,1+:δ velocity fluid number C treatment 1jJ−
In this case, the -f; II acid component) may be removed by dissolving some of the components before the addition. The formation of ultrafine fibers in the fiber sheet (11" fibers) is transformed into a bundle of 111 fibers or extremely thin fibers, so it can be easily branched into one fiber under low fluid pressure. This is a cumbersome method because it can cause confusion.

First, before and after the removal of some of the components by melting.
:f ;'M Even if the fluid flow is processed, J: is not possible. Also,
Some of the solvent components may be used after the resin is impregnated and solidified.

By this method, the base material layer according to the present invention is formed, and at least the surface layer of the base material is made of ultra-fine #& fibers and/or fibers in which bundles thereof are densely intertwined. A porous resin layer is formed on the base material layer.

A method for forming a porous resin layer on the surface of a base material is to apply a polymer solution mainly composed of polyurethane onto a flat film or sheet 1- or a textured sheet 1-. After coating, place the base material on top of it with the densely entangled side facing down, solidify or apply the solution to the surface of the base material, and then cover it with a smooth film or the like. Alternatively, either method of making it a side dish and letting it solidify is also good.

As the coating method, methods such as reverse roll coating, gravure coating, knife coating, slit coating, and spraying can be used.

The coagulation method includes spraying a coagulation liquid, passing through a steam bath, or immersing the membrane in a coagulation bath to produce a giant porous or microporous membrane. Examples of methods that can be used include microporous and single-person pores. In addition to these wet iF4 internal methods, there is also a dry coagulation method to create porosity.For example,
Adding 1 There is a method to cover the porosity.

After impregnating the base H layer with a resin such as polyurethane,
A method in which coating is performed immediately and the base material and coating film are wet-solidified at the same time is preferable because the resin layer such as the porous resin layer and the base material layer are continuously integrated.

In addition, using a resin impregnated with a resin such as polyurethane, the resin that is applied to the surface of the base material's surface layer is adhered to the J part of the rest area b without scraping it off. The porous resin layer that is continuously integrated with the impregnated resin can also be coagulated using a wet discharge method. In addition, it is possible to form a thin porous resin layer with an eaves of about 3 to 50 microns, so this method is also preferable.

After the formation of the porous resin layer, a resin solution for the top coat layer and a dispersion are applied using the same method as described above to obtain the inverted sheet-like article of the present invention. A method in which the process is carried out in several batches, a method in which the hot press step for smoothing the surface is carried out before or during the process, or in a moderate manner are recommended. After performing such hot pressing, some components of the polar 11I fiber-forming fiber may be dissolved and removed in step 11. If you use an embossing roll or grain-forming sheet with a horizontal grain pattern on the surface during heat pressing, it will be integrated, and tIL digestion and grain-forming will be the same.
This is preferable because it can be performed at 1f. Roughly as needed °C1
Treatments such as dyeing, finishing, applying an Lengthening agent, and rubbing may also be performed.

In addition, during the above process, shrinkage of the nonwoven fabric, temporary fixation of the shape using a temporary fixation agent such as polyvinyl alcohol, etc.
Slice for fine adjustment, surface layer or back 11i1
It is preferable that the upper part of the layer is inserted as appropriate.

At least the surface layer of the silver 11 artificial leather of the present invention has a density that far exceeds that of conventional woven or knitted fabrics or non-woven fabrics. The poor smoothness known as A-range beer during elongation has been resolved in 8 months' (Also, a porous resin layer and a 1-tube coat layer have been laminated on that 1 area. It can be used as a wet skin (1) or as a silver material with good air permeability and excellent scratch resistance.For this reason, the silver 1 of the present invention
81 people's epithelium, IF is silver for clothing, including artificial fabric,
For shoes? (1) It is preferably used for various purposes such as handbags, bags, Bell l-1 bags, gloves, and ball leather.

The examples given below will make the invention more clear. , fr, and the present invention is not limited thereto. In the examples, unless otherwise specified, ``parts'' and ``%'' refer to the amount of vehicles. In addition, the average distance between intertwining points, 4f, was taken as the average value of 100 measured values.

Example 1 One filament 1 has 16 island components 8i in the ratio of 50 parts of poly J-lene as a bonding component and 50 parts of nylon 6 as an ultrafine fiber component, and 1+ in - ;
4.0 denier of island component refined Hatake molecular phase Ll array fiber in a form in which a large number of ultrafine fiber components are included in knee component BY;
Using a 51 mm stable, pass through the slapper to form a sheave, then punch with a needle with a knock count of 1 to 21 dollars (see 11). Single molecule phase! A U non-woven fabric was created by intertwining the arrayed fibers. Non-woven A0 (Δ)
1] I4 is 405 Sj / Go, Mi11) Mitsumaro is 0,
209/- Guatar. Average thickness of polar 1111 fibers (0,001 denier "Cv)" 13° hole 1 yen 0.1 mm hole, distance between hole centers 0.6 mm
100 K9/r from a row of nozzles with a bit of
: While shaking the nozzle, pour water under pressure of RL.
The surface of the non-woven fabric was treated with 1!1 speed C1f1 and sprayed five times under the same conditions. 18 branched and closely intertwined with each other
It was based on the group structure.

Next, a mixed diol of polyethylene adipate and p, p'-diphenylmethane diisodino':? - 1 sol polymer was impregnated with 7% dimethylborumamide 1- (hereinafter referred to as DMF) solution of the obtained polyurethane with ethylene glycol C chain elongation 14: Furthermore, the same composition C was obtained, but the hardness w <25% I of the polyurethane) MF solution was reversed and coated with 1 l/21-ter (1 l/L).
It was introduced into water and solidified. After that, it is thoroughly washed in hot water at 80"C to remove (1) Ml-. (2) After drying, the M-I layer has IIJ and thick pores in the middle, and the area near the surface is It becomes a porous resin layer that is microporous, and is continuous with the polyurethane soaked in the base material.
-C was hydrated. 1 of the porous resin layer on the base material layer Jz
9mm was about 150 microns.

Next, the seams 1 to 1 were immersed in trichlorethylene, immersion and squeezing were repeated to almost completely extract and remove the AS resin,
Subsequently, it was dried to remove residual trichlorodiylene by evaporation. The texture of Sea 1~ is very soft due to C part 1 (1).Next, from the surface of this Sea 1~, pigment is added to a 10% solution of Poly1 stellate polyurethane, which has a slightly harder hardness. The added solution was applied with a gravure coater, and after drying, it was passed through a heated embossing roll and C-pressed to emboss a support-like grain pattern.The same polyurethane solution as PJ hemp was applied as a finishing agent with a gravure coater.Top to 1
~ The warp of the layer was approximately 5 microns.

(The resulting artificial netsuke has a flexible texture and a scratch-resistant surface. When we tested the degree of unevenness during elongation by hanging shoes, we found that there were no problems at all. There was a level C.

Remove this silver (polyurethane of J artificial seedlings) with a solvent,
The distance between fiber entanglement points on the surface layer of the base material was measured and was 80μ.
Met.

On the other hand, for comparison, when 7i% silver leather was manufactured in exactly the same manner except without the high-pressure water jet treatment, unevenness occurred at the toe area in the shoe hanging test, and the A fresh and hot item with a diameter of 1° [t
It was 380μ.

Example 2 A mixture of 95 parts of borisdyrene and 5 parts of polyethylene glycol was used as a binding component, and 45 parts of U was used as a binding component, and 1 to 55 parts of poly]-ethylene terephthalate was used as an ultrafine fiber component in large numbers in one filament. Using 3.8 denier, 51 mm mixed spun fibers containing polar II fibers, King's I was made using the example method and Kima's Ij method. The mesh size of this nonwoven fabric was 44051/lri, and the thickness was 2.0 mm. Also, the thickness of the ultrafine fibers was 0.
Thickness and thinness were shown in the range from 0009 to 0.02 denier.

This nonwoven fabric was heated to 95℃ for 7J[? im Soaked in a 5% aqueous solution of polyvinyl alcohol (hereinafter referred to as PVA), the nonwoven fabric was shrunk at the same time as the PVA impregnation, dried to remove moisture, and then soaked in (-Liku III luni-1-tylene). The AS resin was extracted and removed by repeating dipping and squeezing, and then dried.

This non-woven fabric was heated using the same nozzle as in Example 1.
00j (pi/cm) Sing a stream of water spouted with + royal power while shaking the nozzle, repeat the same stream twice, lower the pressure saw to 30 I (9/ctl) It was then treated twice (J.

The thickness of the resulting interlaced nonwoven fabric was reduced to about 1.1 mm;
The layer of the ladle, which is as thick as the surface treated with water, is made up of bundles of very fine fibers branched from the lacrimal spun fibers, which are closely intertwined with each other at a high density, and the surface has very little unevenness. (Thereafter, b was impregnated once again with a 20% aqueous solution of polyvinylnoflucol, and after drying, impregnation was carried out in the same manner as in Example 1 using a slightly higher viscosity impregnating solution of 1111 degrees and 10% of polyurethane. , wash with hot water and dry.
It became s. At this time, no nips or snips were performed after impregnation, and the polyurethane used for impregnation was not applied to the hydroentangled surface.
Since wet coagulation was performed while the resin was still attached, a porous resin layer of about 25 microns was formed on the surface layer of the base material. The other side, which was not subjected to hydroentangling, was only 21 dollar punched and loosely entangled.Thus, a porous resin layer of 4F loaves like this was not formed, but it was puffed to normalize the temperature and the back side. The quality has been improved.

Coat 1 in which carbon black and dye were added to the surface layer polyurethane solution of the porous resin layer obtained in Sea 1 to 111.
Apply with a gravure coater and emboss once after drying.
(I carried out grain shaping. Furthermore, J-Kori 1FO-1 dark gravure was applied to the two-component polyurethane, and further dyeing was performed. The FF depth of the layer from 1 to Tsubuko 1 was 6 microns C Despite the fact that the resulting polyurethane layer covering the surface of the obtained Gli(.1) artificial leather of the present invention is approximately 30 μm thinner as a whole, it does not easily show roughness when stretched. The polyurethane was removed and the distance between the fiber entanglement points of the surface layer was measured, and it was found to be approximately 75 microns (.11 mm).

For comparison, we manufactured artificial leather in exactly the same way except that the high-pressure water jet was not applied. When I pulled it, a crack appeared on the chopsticks. The basic shrine table F
The distance between fiber entanglement peaks in the i part was 350μ.

Example 33 Ratio consisting of 50 parts of polystyrene as a bonding component and 50 parts of nylon 6 as an ultra-m fiber component, 1]-Iramen I ~ 3 of the form in which 200 ultra-f All fiber shoulders 1 are contained in , 8 denier polymer 1[1 time alignment fiber was made into a spun yarn of No. 20 twin yarn, C+r+(z), and made into a 5-ply satin fabric.

The fabric, which was treated with high pressure water using the same strips 1'1 as in Example 1, had numerous ultrafine fibers 11 [branched from the polymer mutual arrangement fiber shoulder 1], and a phase! j- was densely entangled.

Separately, a 20% solution of polyurethane was coated with Ninocoater'c on a transfer paper with a Bogo-like grain pattern on the right side, and the above fabric was layered with the water-treated surface in contact with the polyurethane coating solution, and then bonded together. Wet coagulated in water. After the transfer paper was peeled off after coagulation and drying, a porous membrane resin layer of 120 microns was formed on L of the mechanical base I. The porous llQ
On top of the resin layer, apply a mixture of 2-component Tyzo polyurethane and 1111 additive using a gravure coater. I ♂ I on the surface layer with
Miku [1n and lζ.

1-1 Silver material 4. Artificial leather, but the surface layer of the base part is densely interlaced, so it is difficult to get unevenness. Ta.

When removing the polyurethane, we measured the distance between the chess shoulders and the sills on the surface layer of the altar, and found that it was 115 mm [1 inch].

On the other hand, in the comparative example manufactured using the high-water treatment method (J), the weave was visible, and when pulled, smooth unevenness was generated.

There is an enlarged schematic diagram C of the borrowed textile cloth when it was observed.

In the figure, [1, f2, r3. I'4. f5 and f6
are constituent fibers, al, a2, a3, a4, a5, a6, a
t, aai13, yohi, and a9 indicate the points of intersection of the constituent fibers, respectively.

Claims (1)

[Claims] (1) 14Aill K'A hlia3 and/or a bundle thereof has a fiber structure in which the fiber entanglement point N1 is 200μ or more. on at least one side having IV
1. An artificial leather comprising a porous resin layer having a thickness of 3 to 500μ, and a non-porous resin layer having a thickness of 0.1 to 20μ on top of the porous resin layer.