JPS6071773A - Sheet like leather - Google Patents

Abstract

PURPOSE:An artificial leather having a specific relationship between a void ratio, water permeability, and water vapor transmission, having improved appearance, feeling, resistance to scratching, mechanical strength and comfortableness, comprising a fiber structure of finely entangled extremely thin fibers and/or their bundles, and a resin existing in the void parts of them. CONSTITUTION:A sheet like leather having at least one silver face layer made of a composite material consisting of a fiber structure wherein extremely thin fibers having <=0.05 denier, preferably <=0.01 denier fineness and/or their bundles are densely entangled in such a way that it has <=200mu, preferably <=100mu distance between the entangled points of fibers, and a resin (especially preferably polyurethane resin) existing in the void parts of them, having 60-85%, especially 65-80% voids, >=2,500g/cm<2>.24hr, especially >=3,000g/m<2>.24hr water vapor transmission rate, and <=200cc/cm<2>.minute, especially <=100cc/m<2>.minute water permeability. Preferably the lower layer of the silver face layer consists essentially of the entangled bundles of the extremely thin fibers, and the silver face layer has a structure wherein extremely thin fibers (bundles) branched from the fiber bundles are further finely entangled.

Description

[Detailed Description of the Invention] The present invention provides excellent appearance quality, texture, and scratch resistance i! Introducing a novel leather-like material with excellent functions for I d3 J, and +i.

In recent years evening 1. ? It has excellent i11 texture, excellent mechanical properties and scratch resistance, and does not smear when used on clothes or shoes.
Sweat is easily released from the towel, it is not sticky, and water droplets from outside will not stain stains, giving you a comfortable feeling! A leather-based shrine is strongly recommended.

From this point of view, attempts have been made to provide gas permeability functions such as moisture permeability. The conventional grain layer of artificial anti-moulds is formed from a porous or non-porous layer made of resin such as polyurethane elastomer, or a laminated and integrated layer of a porous layer and a non-porous layer. C
There is.

From the point of view of gas permeability such as air permeability, a porous layer or a thin non-porous layer is preferable, and many of the substitutes have a porous layer or a thin non-porous layer. It's good to be able to take advantage of it (there are known C. However, there are people who cover these silver layers) = Single leather has a poor overall sense of unity, has a strong rubbery feeling of repulsion, is hard, l!l! It has many scratches, the surface has a rough texture and there is no depth to the light.

Moreover, the feeling of stuffiness still remains, and the situation is far from comfortable. People like this 1 Skin・°1′・Smell 6
In an attempt to further improve the 1ξ months, increasing the porosity of the porous layer or increasing the 11P content of the non-porous layer results in a decrease in scratch resistance and grain strength. There was a contradiction.This J, sea urchin, conventional artificial bogo, C was said to have moisture permeability, but only the one of Hell could be obtained.

In addition, from the viewpoint of providing such gas permeability (q), conventional artificial leather is made of non-woven leather impregnated with porous binder.
It is also well known that C uses a basic shrine that is the main body. However, in order to increase the gas permeability in such conventional nonwoven fabric substrates, the voids must be increased.
The structure inevitably becomes loose, strong horns, flexibility, 11
4) It was unavoidable that mechanical properties such as kneading properties would deteriorate, and there was also a limit to gas permeability.

Furthermore, due to the loose construction, the water resistance and other functions may deteriorate slightly, and if the product is exposed to a mountain, water may seep in more easily or water may leak. If you have a small sense of becoming ``Riya 1'', it will produce 4 defects.
＼b shows a soft texture and has a soft texture.In the range of 4j4 structures, those with high gas permeability, such as moisture permeability, have low water resistance and low strength; There was a contradiction in that even if water resistance was covered, gas permeability could not be improved. In other words, there is a vertical relationship between gas permeability and water resistance f/l (there has never been anything that has been able to achieve a level of comfort for both of them).

Therefore, the desire for artificial leather that has all of the above-mentioned appearance, texture, scratch resistance, mechanical strength, and comfort is unrealistic. I couldn't satisfy you.

The first object of the present invention is that it has excellent appearance quality and texture, good scratch resistance and mechanical properties, and is suitable for use in clothes and shoes.
There are 17 skin-like products that provide comfort, such as not getting stuffy, not getting sticky, and not allowing water to seep in from the outside.

The object of the present invention is to create a composite material made of a fiber 114 structure in which the distance between ultrafine fibers and/or fiber entanglement points on the east thereof is 200 μm or less, and a resin existing in the voids. (A) porosity is 60 to 85%, ()3
) Tomo is at least 250 (1/Td, ・241+r
(C) A leather-like sheet-like material having a landscape degree of 200 CC/cM and a fraction F of at least 1 is achieved.

In other words, the present invention provides the above-mentioned ifat! II
! The relationship that 1'J and water resistance are unavoidable is comprehensively solved in addition to the required characteristics of 11!2.

The present invention uses a completely new concept! l ljspecial 4r ff By adding the N-oriented layer, significant improvements in grain surface appearance, quality, feel, n (scratch resistance and mechanical strength) can be achieved, and this specific grain surface structure and texture are flexible. (゛, [ノ/, +1!
There is +.

In the present invention ("moisture permeability" refers to JIS K6549)
1 says J and Rumu. This value is 2500'J/rIt
-2/lt+r or more is one of the requirements for achieving the objective of having good moisture permeability of the present invention. 3000
g/ is more preferably 24hr or more, 4000
g/m or more is particularly good.

The water resistance of the present invention is expressed in terms of water permeability. In the present invention, water permeability is defined as 120 mml-1 (1 water passing per min per 1 cr of leather grass-like material under pressure of 120 mml-1 (1)
cc). Another requirement for achieving the object of the present invention, which is good water resistance, is that this value is below 200 CC/cm2.

Particularly preferred is 100 CC/c#I.

In the present invention, the porosity of the leather-like sheet is 60%.
It is necessary that it be in the range of ~85%. The porosity C here is defined by the following equation.

△; Leather weight-like sheet-like material 11 density 1~ has the balance of moisture permeability and water permeability that is the objective of the present invention.
'I [L becomes. Is it transparent when the porosity is lower than 60%? 1I
Achieved 11 stones r: 'I didn't get it, I! r! If the porosity is higher than 85%, the water permeability may not be achieved or the strong horns and scratch resistance will be reduced. Preferably 6
-C ranges from 5 to 80%.

However, the present invention utilizes fibers 4 that create an extremely dense 4+m structure.
A special grain layer made of a composite material consisting mainly of the 14-structure and the resin present in its voids is created, and a skin with a specific porosity is created. In (13), it is necessary that the desired balance between moisture permeability and water permeability f1 is achieved, and the structure has ultrafine fibers and/or bundles thereof densely intertwined with each other. This means that the density of confounding is high.

It is thought that this J property contributes to the property that even if the structure has a high moisture permeability, the water resistance 1j1 is good. One method of measuring the entanglement density of fibers is to measure the distance between fiber entanglement points, which will be described later, but the fibers in the grain layer have an entanglement density of 200μ or less as measured by this method. It is necessary that the Those with a structure in which this value is greater than 200μ, those with a fiber structure in which the fibers are entangled by needle punching (・fiber structures with less entanglement), those with a +iN structure in which ultrafine fiber shoulders 1 or bundles thereof are simply arranged in a plane, or In addition, polar 111vi shoulder 1 or i no shi 13 grows densely in a fluff-like manner on the surface of the base and causes it to sag. Massage, repeat I! / υ Receive force, etc.
When pressed, the surface becomes fluffy, cracks appear, and the surface tends to be stiff, and the water resistance is completely inferior. In order to eliminate these drawbacks,
The distance between the fiber entanglement points must be 200μ or more. If the distance is 100μ or less, incorrect results can be obtained.

Here, it is the value obtained using the method of 1 (#I [distance between interlacing points, -)], which indicates the density of the interlacing in Revision 1. As a measure, if I+f+ is small, the interlacing is There are some words that show how detailed this is. Figure [Maginmen 1 "・1 to 1 noru (
(Viewed from the front side of the 8-piece woven cloth.) There is an enlarged human figure of the shoulder f of the composition of the kotoki. Composition revision f is "1.12, "3...
....Let the point where the fibers ``1, f2 intertwine with each other be al, and the set C where the fibers ``1 and f2 intertwine, a, 1 '(' -1, ill f 2, and the 1 of other fiber ill・Intersect in the form of;
lj blasphemy a3, a4, a5...drill. next(
The water of 114Del between the confounding Jj1 requested here
'tf11#I F, l I a ;), a 2 a
3, d 3 0 4, a 4 d 5, a 5
cJ ++ , a6 a 7 , a 7 a 3 ,
a 3 a r), F) 8a 7, a 7 a
9, F,:1 g ali..., and take the average (111) of these multiple measurements and divide this by the distance between the fiber entanglement points.

In addition, the lower layer of the small white layer is mainly composed of ultra-fine fiber bundles, and the ultra-fine fibers and/or their bundles in the grain layer are intertwined with each other. The grain layer and the F layer e have a fibrous structure in which the fibers are substantially continuous, and b is a preferable structure because the moisture permeability and water permeability of the present invention are well balanced. Because it does not cross over, it is also powerful and is preferably used.

In addition to δ, the lower layer of the grain layer also has an intertwined structure of ultra-fine fibers branched from it, such as ultrafil + fiber bundles, and the ultra-fine fibers and/or bundles of the grain layer 7j are the ultra-fine fibers of the lower layer.
It is also preferable to have a fiber structure in which one string bundle is branched, or one in which the fibers are continuous with the lower layer of pole 1111 fibers, and these are intertwined very closely. In terms of moisture permeability, the structure in which the lower layer is mainly composed of ultrafine fiber bundles is highly preferable.

1 to 111 fibers in the grain layer of the present invention 1; L,
Beef with a fineness of 0.2 denier or less is no good. If the fiber is thicker than 0.02 denier, the stiffness of the fiber 1 (1 is too large (the beam-like properties of the grain layer and the wrinkle form on the surface will be damaged), or the cracks will shine due to rubbing etc.)
4T
It is difficult to form a grain layer, and it is more difficult to form a grain layer than 0.2 denier, preferably 0.05 denier or less.

However, by using ultrafine fibers with a diameter of 0.01 tenier or less, the C fibers are tightly intertwined with each other.
The fiber 414 structure of the present invention is formed C.

Components forming such ultra-fine toothpicks include, for example, polyamides such as Ny1'6, Ny1'66, Ny1.1'12, copolymerized nylon, polyester dilene terenothalate, and copolymerized nylon. Poly[butylene terephthalate, polybutylene terephthalate 1~, copolymerized polybutylene terephthalate]
Examples include polyolefins such as polynisdales, polyethylene and polypropylene, polyurethanes, polyacrylonitrile, and small vinyl polymers. Among these, polyamides and polynisdels are preferred, and neuron 6, nylon 66, and polyethylene terephthalate are particularly preferred.

The grain layer of the present invention is formed on a composite body in which resin is present in the voids of the fibers forming the densely intertwined state, and Regarding the resin coating on the body, it is not necessary to cover all the layers of the textile structure, but only on the very thin layer on the outermost surface of the fiber structure (4 coatings, and other layers such as t). It is also good to have no layer at all.When flexibility and soft feel are particularly required, such as for clothing, it is preferable to use - (f6
4 Those with a structure that has a lot of fat attached, the very thin layer of resin on the top surface of the grain layer is particularly common, and the rest have no resin at all.
4M construction, such as a 4-sided can, or a 4T construction in which the resin on the surface is non-porous and the rest is porous. This is preferable when particularly high scratch resistance is required. This cannot be said unambiguously because it is related to the way the above-mentioned Mechanism 1 structure is formed and the state of the underlying layer.If the Mechanism 1 structure is densely packed in a porous state, Fat filling thickness is 30
It is preferable not to exceed microns. However, this is not the case (in the case of the 4j resin structure), where the surface portion is non-porous and the portions from C1 to 1ζ are porous. Furthermore, a resin may be applied to the lower layer of the grain layer, but the number, state and structure of the 4DI resin in the upper layer are also relevant. Considering these,
In the present invention, the f-balance is limited to the requirements of porosity, moisture permeability, and water permeability, and the properties of the skin-like material are made to fall within this range. It is necessary to do so.

In the present invention, the resins used for C1 silver are, for example, polyamide, polyester, polyvinyl chloride, polyacrylic acid ester (polymer, polyurethane, neorene, sulfur butadiene copolymer, acrylonitrile butadiene). Synthetic resins such as copolymers, polyamino acids, polyamino acid polyurethane derivatives, silicone resins, natural polymers, or a mixture of these resins. Plasticizers, fillers, stabilizers, additives), dyes, crosslinking agents, etc. may be added. Polyurethane resins or polyurethane resins to which other resins or additives are added are often used because they provide a grain layer with a particularly soft texture and feel and good ILG bending resistance.

The resin used for the grain layer 1 is also 1111, but the porous Y! It is preferable to use JFj, and polyurethane is preferable. Ultrafine fibers and/or polyurethane are preferable, so it is preferable to use binder resin. 1'8. Mr. Sea I~
This sheet-like material is extremely flexible and drapeable, but has low water permeability. The effect of the present invention is maximized because it gives the i and negative claws, and the present invention is particularly advantageous in its graceful aspect.
In the case of ~, the binder resin should be at least 10%, preferably 5% or more.

The Bogo-like sheet 1 of the present invention can be produced by a novel method exemplified below. TL, it's a solvent! I 'tIru dissolution'll [(1) ')'i 'X6
It is a fiber consisting of two or more 1-0 components (by dissolving and removing one of the components). Using multi-component Kiken 1 to form C1 Fukai 4I Sea 1-1, Nraro Δ7
Non-woven fabrics with woven or knitted fabric integrated into the middle or back side of non-woven fabrics are preferable.

A high-speed fluid flow such as a 4+-shaped water flow is applied to at least one side of the non-woven sheet 1-, and a high-speed fluid flow is applied to at least 6 surface layers of the jet flow. At the same time, one component of the multi-component fiber is split apart to expose the countless ultra-fine wire layers, and at the same time, these ultra-fine fibers are processed into ultra-fine fibres.
In addition, (the distance 01 between the intertwining points of the fibers in the bundle of fibers is 200μ or less.) Then, the (H fat for the silver surface layer described above is added to the interlacing irr + of the 44 fine fibers) in a solution. Ya”-
The resin is applied in the form of a resin, and a heated roll such as an embossing roll is used to integrate the resin to form a grain surface. At this time, it is preferable to use a saw embossing roll, which is engraved with an uneven pattern like the skin's pores or suspension grains, because the uneven pattern on the surface of the grain layer is sculpted, creating an appearance that is different from that of a natural seat wheel. .

According to the present invention, a C grain layer is formed in this way, and then the components of the multi-component fiber are dissolved and removed. , Kazuai Eika Yano 6th Takelow 1.11 (ku. Therefore, this, J
, Una 4) Removal of dissolved components from multicomponent fibers after Zores (
J (There is no limit to how much space you want.

In order to achieve the necessary balance between the porosity of the present invention and moisture permeability such as 11I and water permeability, it is necessary to appropriately select the 11-removal strip 111 of the dissolution-removal component of the multicomponent fiber. 1, which must be 9v, dissolves like a crab -) li'+
＼The proper conditions for this are the structure and composition of Sea 1~ (f to 8).
It is related to the denseness f1 of the interlaced layer of the structure (~fine fibers). For example, if you cut a strong chive 1 with the aim of completely removing the 1d-removed component, you may cause a leather-like sheet to become a personal item, piles of O, sag, and have a low porosity, or the removal of the components by dissolution may become difficult. It is necessary to dissolve and remove the H-removal component so that it falls within the range of 60 to 85%. Or, for example, extract the extraction liquid (regionally or [yo convex 1+'; In the clearance method, N"j L/'l' (+5,
- Due to the influence of J1, it is necessary to add ``A'' to the appropriate 4, so detailed conditions cannot be stated. What is necessary is that the porosity of the seat wheel-like material falls within the range of 60 to 85%, and that the porosity is dissolved and removed.

When carrying out dyeing or I-cutting processing, the dissolution and removal strips 1'1 may be set so that the properties of the final leather-like sheath-like material fall within the scope of the present invention.

In the present invention (the multi-component adhesive layer 1 consisting of two or more components having different solubility to the agent A8 to be used), for example, two types including the above-mentioned 4. Beads or dope of the above polymers were mixed and spun at 81°C (°C), and the glue layer (1 component) with a rod-shaped flat cross section was interposed between the saccharide components in the shape of OaJ. A glue layer 1 with a chrysanthemum-shaped cross section, a core-sheath type fiber, a bimetal type fiber, a large number of ultra-fine kumites 11 continuous in the direction of the left 11 axis) are arranged and assembled, and other polymeric substances (enveloped and one 881iII
These include the polymer phase 77 arrayed dormant weave that formed the I, the island component finer polymer mutually arrayed fiber shoulder 1, etc.

A\To achieve the maximum effect of the invention, 7m island type 4
-Mixed spun fiber II with a large number of Shimano components
I, the polymeric mutual array fiber J3 and the 10-component equivalent part further have countless 115i fine fibers 11, and the island component finer part which has a sea-island structure has a phase 4j array fiber, especially +11' Delicious. The components bb < of such multi-component braids that are dissolved and removed are likely to be easily split into pieces by the high-speed main current, such as polystyrene, polyethylene, boriso-11-pyrene, polyamide, polyurethane, etc.
Easily soluble in alkaline solutions, copolymerized polyethylene terephthalate l-, Toshiji polyvinyl alcohol, copolymerized polyvinyl j' alcohol, styrene-acryloni-lyl copolymer Iho, Sburev and acrylic acid 1111 Grade Alborite Sprue J, and/or Methacrylic Acid Q) Grade 8 I1
Ru: -1-ru earth slurry etc. co-in combination etc. are used. 1. Flexibility of spinning and ease of dissolution and removal. ',i''
Q Polystyrene, styrene-acrylotri-1-lyl polymer, higher alcohol of styrene and j7 acrylic acid, l
methacrylic acid and/or high grade methacrylic acid.
Coalescence with the sprue (11) is particularly useful (3) The fibers of such a multi-component glue layer (113I) are not particularly limited, but the stability for spinning A material having a denier of 0.5 to 10 denier is preferable from the viewpoint of sheet forming properties.

The method for high-speed flow is to apply 4f of water to a high-speed columnar flow or curtain. Spray on the glue layer (4 sheets 1-) to split and branch the fiber #IE +3 and entangle the ultra-fine components. 1fff forming type 4I fiber or ultra-fine fiber Konto's warisaki ＼b branching l) and J size, depending on the warisaki 1b branching)
t:i +7) relatively (l(If (good, but difficult to split or branch 8kU III -(c, 70--3
001 meeting 7 cm height 11- or 11+':'a L/ii. d: k:, It is also possible to raise the Iij + Maro of the blowing C circulation to the hair 5J, and the split J5, O, and the intertwining Iij + Maro.
! i! '(Yes, Iji'i Sato(Nota 0, especially the moon-change l! l)(l(i'1
4I- is 1) lji'!
There is a right movement C because it disappears.

Pre-formed) type fiber! The type of solvent used for extracting and removing the components to be dissolved and removed in No. 11 is 4"n 5] ('+, Hunder 01 fat removed, Umu weakly contained 1.L
(111 fat's quadruple edition 1 J, riwari stomach or, for example, park 1 ru - [diref, 1 riff]' ru - II'
J relevhenbin, 1-ru 1in, xylene, j7hi1
-n, convex 1 acid, ``2 f-/ and 19 ka iJ.

The leather-like material made of wood should be further treated with a polishing agent, dyed, and rubbed, as necessary.

In this way, the skin of the present invention is
Shil, I: Has a gentle texture, 4T smooth surface feel,
Silver fiber for clothing that has good bending resistance (1), Vlυ1θi (fatigue resistance), and (4) scratch resistance (C1), water resistance (41), and comfort such as no stuffy or sticky feeling. ``Large 1-leather ``1r, shoe uppers, gloves, etc. 44 pieces each
It is preferably used for applications 1j.

The following examples are intended to make the present invention more clear (and the present invention is not limited thereto).
do not have. In the examples, d3-(parts and %) refer to the car 1d unless otherwise specified.

Example 1 Polystyrene was mixed with nlJ component (50 parts, extremely l114
A mixed spun fiber with a ratio of 11 components and 50 parts of nylon 6 and 1 filament 1 and a large number of ultra-fine mechanical components 1/l, (1) 'i''-le,
5) Using a 1mm staple, pass the card through the slipper to form a thread, then make the knock cloth.
: Approx./I (507/m, Mitsuhiki is 0.18 SJ/
ad (The average thickness of mouth 1 eye 11 is approximately 0.OOG denier.

A hole with a hole diameter of 0.13 mm is formed in a nonwoven fabric with a distance between the centers of the holes of 0,
6 mm pitch C-row parallel / υ nozzle sawtooth 1 (
-) OKH/ crA (7) Using the El force, turn the water at high speed 'C''11 negative (U'l 1! and -J' of the nonwoven A5)
Place the nozzle on the surface of J.
11iil same row a'1 and process 5 times t+', c-)
/child.

Is the kneaded and spun fiber in the surface layer made of polystyrene? ;11♀
゛(Removed buoy) 21st 6th 46itlTl(etc.
1 is densely intertwined on the surface layer, and the inside is in the form of 1T co-spun rope shoulders 1 intertwined with J and J.

Next, on the nonwoven fabric, a prepolymer of borieleneazibyl-1-dylΔ-l and IJ,p'-Schif]nylmethane diisocyanate-1- was added to the nonwoven fabric by elongation of the dino-1-nylmethanecyamine C chain. 1)% dimedylformamide (
Impregnated with liver fluid (referred to as 1,
The person was clotted. After that, thoroughly wash in 80'U hot water to remove DMF (dry).

Next, a 10% solution of polyurethane, which has the same chemical composition as the polyurethane used for impregnation but has an Ib-yellow color, is applied to the surface onto which the high-pressure water jet was sprayed. It was coated with a gravure coater so that the amount was 4 g/tri.

After this, polyurethane (= J and heat embossed at 180'C on the surface.

After completing the Cheboi J' tJ above, polyvinyl aluminum
7) J% aqueous solution, impregnated with polyvinyl alcohol, dried, then immersed in 1 helichlorethylene (using a Nogo-iron mangle to reduce the clearance to -1), immersed and squeezed 15 times. Repeat, polystyrene 99.8
The extract was removed and dried until an extraction rate of 1.5% was achieved. After drying, wash with warm water at 80'C to remove the polyvinyl alcohol, and after drying, lightly puff the back side and dye from C.
-Add'- to iJ.-].

The obtained skin-1-sheet personal belongings are Noi 11 (5 or F).
35%, polyurethane 1%, l:l=J
is 350 W/yd, apparent density is 0.39 W
/ m', the porosity is 66% C, and it has a very good C feel, very similar to the top calf, and has a 4j and chewy texture.
Things that are hard to catch in January are C. Furthermore, the moisture permeability is excellent at 33,200 p/m・241+r (12'OCC/cm-min(: AV) in water f4-G(fM shi'(43ri, 41+Awa1)). This skin exhibits good properties.7.t.

11. After applying to the sheet 1, remove the urethane and finishing agent by extraction with solvent C and remove the silver surface H'?1 surface.
1. Measure the distance between the interlacing points of the weaving cord f(1) and calculate lJ and (
Niro I') 77 Miku I'n-C was there.

On the other hand, for comparison IJ, f=1 of poly-onylal-1!
l1rl polysprene removal without performing j 4.
1', l: The leather-like sheet 1~-like material obtained had an apparent ζmelon of 0.50 g/-1 and a porosity of 56%, and a transparent iW
The material of the C1 shoe, which is outside the scope of the present invention, has a T of 1200rI/TIL-241ir, and has a strong feeling of stuffiness.

Example 2 Polystyrene was mixed with a sea component (60 parts, 40 parts of ultra-fine carpet island formation 6), and 16 island components 8Y were added to 1 filament 1. , furthermore, the island component group contains a large number of ultrafine fibers, and the island component group is refined, and the island component group has a structure in which a large number of ultrafine fibers are included.
Using a 11 mm diameter sutaple (Lung 11 wool L brim), a needle punch of 1,193,000 pieces/aA was performed (non-woven fabric).
1-1 (J was approximately 420 Si/tri, density was 0.20 g/aa. The uniform thickness of the ultrafine fibers was approximately 0.001 i.

In the same manner as in Example 1, a high-speed water stream was applied U/1 times to both sides of the non-woven Tli.

Next, heat press only one side of the nonwoven fabric at a temperature of 150°C to smooth it, and then apply a polyurethane solution to this flat side with a graphite to reduce the solid content of the polyurethane to ζ3. I9 to become Sl/IIt
~did.

Next, on this polyurethane-applied surface, one grain pattern was applied using an emboss II-rule engraved with an adult grain pattern at 170°C.
It became 1.

Next, write this sheet as follows:
(soak while avoiding vibration) 71jl of Ci and squeezing liquid
Repeatedly, the roll clearance of the squeeze fluid is 90%, 80%, 70%, 60%, 50%, /1 of the sheet thickness in this order.
5%, /IO%, the extraction rate of polystyrene was reduced to -99.9%.

Then 1. The leather-like sheet-like material obtained by dyeing this sea 1-1 has a grain size of 2207 and a grain size of 11 to 0.32! I/m', porosity is 72%, extremely U1. It was soft and drapeable (the surface was very similar to that of natural cloth, but it was even more supple). Furthermore, the moisture permeability is 1 good T, L7700g/Td, -24br]
Q (The soil, water permeability is 50 CC/c#I, and the daffodils are also good for dividing.) ?''Ah, :.

On the /j axis of the -jj ratio, -L of solvent removal was done in the same manner as in Comparative Example 1.
The one with 9.8% has a porosity of 157% and a moisture permeability of 16009/ni・241+R or 4 pieces.
N)ko.

Example 3 One filament had 9 island components in a ratio of 60 parts of polybrene as a sea component and polyethylene terephthalate as an ultrafine fiber island component of 1/IO part.
Real IIi using a 4.0 dale, 45mm snow pull of i1 molecular mutual array fiber! ! Example 1 A needle-punched non-woven fabric was obtained in the same manner as IC0 non-woven fabric with 11 meshes of 450 mm and density of 017 Sl/d. The average denier of the island's microfibers was 0.18 j'' ni.

851 from the nozzle of Example 1 to a piece of woven fabric (li)
(7/ cni moon - the power of 1 - J water was sent to this UT,
Do the processing four times.

Next, the non-woven material I was dyed according to the h method of Example 2) (dyed [6] The finished leather ♂ 1 was placed in a uniform sheet-like material, and the density was 11 (J was 240σ/TI1., older brother 1). is 0.28CI,y
'on, a soft texture with a porosity of 80% was obtained. In addition, moisture permeability 1u 8200 g/ TIL +
:% <lere(Jj ri, water permeability is 145CC/(
: #l·min, which was within the range of the present invention. This skin? It-sama sea 1 ~ kind person ini's conspiracy 911 father contact point distance is 185
Miku■Con℃ was there.

On the other hand, for comparison, only one culm was heated to 60' and the soaking was repeated without squeezing, and the extraction rate of polybrene was increased to 98.5.
The porosity of the skin-like material obtained by applying the 1j method, which is expressed as %, is 88%, and the porosity is 950.
0 Sl/1f・24゛C, but -14 water degree was 300 CC/cM・min, which was out of the scope of the present invention, and it was a significant water stain.

[Brief explanation of the drawing]

Figure titt Enlargement of the constituent fibers when observing the 17Iff fiber shoulder 1 in the grain layer from the surface side (Kuwa 2) fsJ
3J, Bi1' 6 Hari4 Seiwa Kaku, al, a2, a3
, al, knee 15 , aQ , a7 , a 8 oJ
ζbiaQ (shows the father point III of 111 synthetic cord)
j. 115 Items'1 Applicant Toshi Co., Ltd.'5 f
c.

Claims (1)

[Claims] +1+4@A composite mainly consisting of a fiber structure in which the intertwining point distance 1ill of fibers of a bundle of fine fibers and/or a bundle of fibers is 200 microns or less, and a resin existing in the voids thereof. It has a grainy layer formed by the body on at least -b lunar surface, (Δ) porosity is 60 to 85%, (B) moisture permeability is at least 2500 J/m・24 hr, (C) communication Water level is 20
A leather-like sheet-like material characterized by exhibiting at least the following properties under 0 cc/cm/minute yield. (2) (Δ) porosity is 65 to 80%, (B) moisture permeability is low but 3ooogz'nt-24br, and (C) water melon has at least 11i properties under 100 CC/crA/minute yield. A leather-like sheet material according to claim (1), characterized in that: (3) The IC according to claim (1) is characterized in that the 1!1llllIl fiber forming the grain layer has a repulsion of 0.05 denier or more, or the IC is leather-like as described in paragraph (2). sheet-like material. (4) Kogo pore-like J3 and/or IC are characterized by having an uneven pattern for leather grain formed on the surface of the grain layer.Claims (1) to (3) Ij The leather-like sheet material according to any one of 'i. (5) A product obtained by dissolving and removing at least one component of the ultrafine fibers and/or the polymer mutual array fibers.
1jj Claim No. (1) characterized in that
1. Leather-like sheet material according to any one of items 1 to 4. (6) Claims (1) to (1) characterized in that the 4ai fine fibers and/or their bundles are obtained by dissolving and removing at least one component of the mixed spun fibers. 4) The leather-like sheath according to any one of items 1 to 4).