JPS6071752A - Interlaced nonwoven fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that the ultrafine fibers and the ultrafine fiber bundle in which the eastward facing ultrafine fiber bundles are movable relative to each other are three-dimensionally intertwined over substantially the entire layer. Concerning interlaced nonwoven fabrics.

Conventionally known non-woven fabrics include: (1) A stable web of ordinary fibers is formed into a random web, and (2) a fiber bundle obtained by needle punching, and (2) a fiber bundle in which a large number of single fibers are bundled together. As a living body, the fiber bundle is a non-woven structure in which the Sli fiber bundles are intertwined with the phase H while still being in the fiber bundle state. ) A non-woven fabric having a structure in which fiber bundles formed by self-adhesion of single fibers are intertwined; ■ A fiber bundle in which single fibers and single fibers made of self-adhesive dark blue or splittable staple fibers are combined; The fabric is intertwined with the woven or knitted fabric to create an integrated structure, and the non-woven fabric has a 4M structure in which the short ultra-fine single fibers and the fabric are intertwined and integrated.11 Non-woven fabrics [I, etc.] are known.

However, the non-woven fabric that came after ■ had a structure in which each relatively thick 1ili fiber was intertwined three-dimensionally, and therefore lacked flexibility and had an extremely unpleasant feel. has been severely restricted. (2) The latter type has better flexibility than the former type, but the shape retention of the non-woven East German fabric is extremely poor. The shape retention of the product (■) is better than that of the product (2), but it is still insufficient. Furthermore, since the 4J& fiber bundle included in the nonwoven fabric has a structure in which the ultra-Ill fiber 1F is self-adhered to the phase H, even the a-string bundle made of ultrafine fibers is inflexible and highly rigid. For this reason,
This affected the texture and other properties of the nonwoven fabric, making it impossible to obtain a nonwoven fabric with particularly high flexibility. Also, when you look at this nonwoven fabric with your hands, the self-adhesive fiber bundles get caught in your hands, giving it a rough feel. Furthermore, when you bend the nonwoven fabric, it folds like paper,
It has an unsightly shape with a bent outer shell. (2) Since the latter contains woven and knitted fabrics, its shape retention is good. However, the fiber sheath bundle included in A11 non-woven IJ has a rigid structure in which ultrafine fibers are bonded to phase Z7, as in the case of ■, so it still has the same drawbacks as in ■. There are things that I have. Furthermore, peeling is slow at the interface of woven and knitted materials, there is considerable variation in the way the fibers elongate in the plane direction, and the length of the fibers is extremely long, making it difficult for ultrafine fibers and l1Ii fiber bundles to be pulled out. 1
It has disadvantages such as the texture of the woven or knitted material being raised or too small on the surface, and the fibers of the woven or knitted material sometimes fraying from the cut end of the lifting platform.3. As with ① Nora-no-do, ① contains fabric and has good shape retention. In addition, since it is composed only of ultrafine single fibers and fabric and does not contain rigid fiber bundles, it does not have the drawbacks of item (3).

but. In addition to the disadvantage that only ultra-fine single fibers are intertwined with the fabric, the intertwining becomes dense and the texture is hard and easy to get. Disadvantages include the fact that the elongation in the plane direction is quite uneven, the fiber length is extremely short, so the ultra-fine single fibers tend to fall off easily, and in some cases, the U and navy blue of the fabric may fray from the cuts. There is a thing C that has .

The object of the present invention is that it does not have the disadvantages of conventional nonwoven fabrics, has excellent flexibility, and has good shape retention even though no woven or knitted fabric is contained inside. It is an object of the present invention to provide an interlaced nonwoven fabric which has a similar feel, does not easily come out when folded, has a smooth curved shape, and has high strength even if it is thin.

In order to achieve the object of the present invention, the present invention has the following configuration.

Substantially all layers of the intertwined nonwoven fabric include (△) ultrafine fibers of 0.5 deniers or less, (3) a degree of freedom in which the ultrafine Ili strings constituting the ultrafine fiber bundle can move in the phase -U of the ultrafine fibers; An intertwined nonwoven fabric characterized by having a structure in which eight ultrafine fiber bundles having a 4rIff structure are arranged in a certain state and are densely intertwined three-dimensionally.

The ultra-fine fibers used in the present invention are made by bundling ultra-fine fibers directly produced by a super draw method, a method of discharging through a large number of micropores, a method of spinning using a gas flow, etc. (If a single composite fiber is bonded with another bonding component, the bonding component may be removed at an appropriate time in the nonwoven fabric manufacturing process and recycled into ultrafine fibers. However, if the fibers become thin, spinning becomes unstable. It is difficult to process and difficult to handle, as fibers may peel off during the manufacturing process, and it is difficult to manufacture ultra-fine fibers by direct spinning. Due to its slightly inferior flexibility, it is recommended to use ultrafine fiber-forming type II fibers made of multiple components as described below, dissolve and remove at least one component at an appropriate time during the nonwoven fabric manufacturing process, and use them to convert them into C ultrafine fibers. More preferred.The ultrafine fiber-forming fiber preferably used in the present invention is, for example, a U&string with a chrysanthemum-shaped cross section in which one component is intentionally interposed between other components, or a multilayer bimetallic type. Fibers, multilayer bimetallic fibers with a doughnut-shaped cross section, and chips or beads of two or more types of polymeric substances are melted and mixed, or the molten components of two or more types of polymeric substances are mixed and spun into a so-called mixture. There are spun fibers, polymer mutually arranged fibers in which a large number of ultrafine fibers continuous in the fiber axis direction are arranged and aggregated and combined with other components to form a single 11 navy blue, etc., and two or more of these fibers are mixed or They may be used in combination.Ultra-fine fiber-forming fibers such as polymer mutual array fibers and mixed spun fibers having a sea-island structure consisting of two or more types of polymer substances with different solubility in solvents require that at least one of the components be dissolved. By removing it, it has particularly excellent flexibility, has an extremely smooth feel that feels like it is sucking on your hand, and has excellent shape retention (0
This method is most preferably used because it provides a nonwoven fabric with a soft texture.

In addition, according to the present invention, (Puru 44i fine fibers are made of polymeric substances having fiber-forming ability, such as polyamides such as nylon 6, nylon 66, nylon 12, copolymerized nylon, polyethylene terephthalate 1 ~, copolymerized polyethylene derephmerate, polybutylene terephthalate,
Examples include polyesters such as copolymerized polybutylene terephthalate, polyolefins such as polyethylene and polypropylene, polyurethanes, polyacrylonitrile, and vinyl polymers. Further, the ultrafine fibers used in the present invention may be composite fibers made of different or the same types of iridescent molecular substances, and crimped m5It, irregular cross-section fibers, hollow fibers, and lotus root-like porous fibers may also be used. Furthermore, different kinds of ultrafine fibers such as 4fA fine fibers contained in the nonwoven fabric may be mixed.Furthermore, -C is a binding component or a dissolving and removal component of the ultrafine fiber forming type fiber 11. C
For example, polystyrene, polyethylene, polypropylene, polyamide, polyethylene terephthalate, polyethylene terephthalate easily soluble in alkaline solutions, polyvinyl alcohol, copolyvinyl alcohol, styrene-acryloyl copolymer, styrene. [I] A copolymer of acrylic acid with higher alcohol ester J3 and/or methacrylic acid with higher alcohol Nisdel, etc. are used. Polystyrene, copolymers of styrene and Krylon I to Ryl, higher alcohols of styrene and acrylic acid are used because they are difficult to spin composites, are difficult to dissolve and remove, and are easily destroyed by the impact of high-speed fluid flow. Polystyrene polymers such as esters and/or copolymers of methacrylic acid with higher alcohol esters are preferably used. Furthermore, a copolymer of styrene and a higher alcohol nysdel of acrylic acid and/or a higher alcohol nysdel of methacrylic acid is more preferably used in that it is possible to obtain ultrafine fibers with a draw ratio of -6 and high strength. In addition, in order to reduce branching of the ultrafine fiber-forming fibers during treatment with high-speed fluid flow, 0.5 to 30% of polymers such as polyalkylene glycols are used as binding components or dissolving and removing components. It is preferable to use them in combination. The fineness of the pole 111 fiber-forming type fiber 11 is not particularly limited, but is 0.5 to 1o-5'' based on the stability of spinning, the stiffness of nonwoven fabric formation, etc.
- - is preferred.

Binding components used to bundle microfibers and temporarily adhesive them include those that can be removed with water due to their industrial cost, such as Tadoe Podenbu/U, polyvinyl alcohol ruboxymethyl cell E1-su, etc. is preferable, and in addition to these, polyvinyl latex which can be dissolved in other solvents,
Synthetic glues, natural glues, and adhesives such as polybutane adhesives, polyurethane adhesives, polyester adhesives, and polyamide adhesives are used.

The fineness of the ultra-fine m shoulder used in the present invention must be 0.5 denier or less. If the platform is thicker than 0.5 denier, the stiffness of the fibers will be too high, the softness of the nonwoven fabric will be poor, and it will be difficult to intertwine the fibers in a dense manner.Preferably 0.1 denier or less. , more preferably o,
A suitable C is below oi denier. Furthermore, in the case of O, OO5 denier non-vortex, the fibers can be intertwined very densely,
This is particularly preferred because the nonwoven fabric has extremely good shape retention.

The ultrafine fiber bundle of the present invention is one in which a large number of different or similar types of staple or filament-like ultrafine fibers are mutually arranged in parallel.
111 fibers have a shape with a degree of freedom in which the microfibers can move relative to each other, so they are flexible. C is an extremely important requirement in the present invention. In other words, in a fiber bundle formed by self-adhesion or bonding of ultrafine fibers, the ultrafine fibers cannot move in the east direction,
Although it is an ultra-fine fiber bundle, it actually exhibits the same behavior as one thick single fiber whose total fineness corresponds to the fiber bundle's total fineness. Therefore, only nonwoven fabrics with the drawbacks mentioned above can be obtained.

The nonwoven fabric of the present invention has the ultrafine fibers and the above-mentioned ultrafine fiber bundle 1 having a free structure in which the eastward ultrafine fibers can mutually move.
It has a structure in which substantially all layers of the nonwoven fabric are interwoven with the wood body and are densely intertwined in three dimensions.

Since the interlaced nonwoven fabric of the present invention has such a structure, it does not give a sense of unity, has excellent flexibility,
Moreover, even though there is no woven or knitted material inside,
It has good shape retention, feels like it's sucking on your hand, and has a smooth curved shape when folded. 7, and has high strength even if it is thin.

In addition, in most of the folding shoulders f made of 4RTFCη of the interlaced nonwoven fabric of the present invention, the parts where each ultrafine fiber is present constitute a bundle, and in some parts it is branched, so that it is not possible to separate the single fibers and the bundles. Shino is preferable because it has an incomprehensible structure. For this reason, it is possible to obtain an interlaced non-woven fabric that has an even better sense of unity and that the ultrafine fibers are less likely to fall off.

In addition, the fiber bundle 111 is substantially made up of ultra-fine fibers 1 (only bundles).
[It has a part where the fibers are intertwined with each other while remaining in the state of fiber bundles, and a part where ultrafine fiber bundles and ultrafine fibers are mainly densely intertwined,
Non-woven material 5 has a structure in which both parts are unevenly distributed in the thickness direction.
Fiber filling in both parts / υ degree 1, that is, the apparent density of the fibers and the fineness of the entanglement are large, so if you bend it with the loose side facing out, it will have a paper-like deep wrinkle] It becomes. Furthermore, deep creases also occur when loose parts are inside the nonwoven fabric. On the other hand, if the loose portion is on the outside, the surface fibers become unsightly and fluffy, and furthermore, there is a disadvantage that pilling is more likely to occur. Tl
However, these drawbacks can only be overcome by creating a fiber structure in which ultrafine fibers and ultrafine III bundles are densely intertwined over substantially the entire layer of the nonwoven fabric, as in nonwoven fabric A5 of the present invention. It is.

In addition, in the nonwoven fabric of the present invention, the thickness of the ultra-fine fiber bundles (vl) of the ultra-fine fibers included in the ultra-fine fiber bundles does not necessarily have to be the same in thickness, but can be varied from thin to thick. It is something.

As for the shape of the bundles, the distances between the ultrafine fiber bundles may be very wide, others may be small and close together, or the ultrafine fibers may be in contact with each other. Furthermore,
The length of the ultra-fine fiber bundle is not clearly -6 from where to where, but varies depending on the way the ultra-111 fibers are branched from the ultra-fine 1iIi fiber bundle. In this way, the nonwoven fabric of the present invention has various shapes of ultrafine fiber bundles and poles 111.
Some fibers are mixed and intertwined in a complicated manner.

In addition, regarding the denseness of the entanglement of the fibers, it is possible to determine the fineness of the fibers by a bundle of ultra-fine mechanical fibers struck by a strong []] blow of a high-speed fluid flow or by ultra-fine In
The fibers are pushed in various directions with the dispersion of the high-speed fluid flow, and a high degree of entanglement is achieved by interpolating, twisting, and entangling the fibers. The density of this entanglement is so high that it cannot be achieved by conventional interlacing using only needle punching, shrinkage, or shrinkage, such as in the direction of the entanglement density of -L. Furthermore, if the length of the ultrafine fibers constituting the nonwoven fabric or the ultrafine fibers in the fiber bundle are too short, the strong horns of the nonwoven fabric will become weak.

Based on the length of the ultrafine fibers used in MA construction of the non-woven material 1i, the length is 15 mm or more, preferably 25 mm or more, and even more preferably 35 mm or more.

The intertwined nonwoven fabric of the present invention can be specifically realized by the novel method described below.

First, a garment is formed using the ultrafine bonded fiber bundle produced by the above-mentioned direct production method τ, the filament of the ultrafine fiber forming type 11 Iff, or the stenible cut into an appropriate length.

Next, the primary assembly is formed by applying needling or other methods without needling. Alternatively, garments or nonwoven fabrics made of different fibers are laminated to form a needle link. After that, a high-speed fluid stream is collided with the fibers to destroy or separate the bonded components or dissolved and removed components.
Separate the IW spoon into 4 bundles, and at the same time, carefully combine each other into secondary combinations. The fluid referred to here as C is a liquid, and in special cases, it contains an extremely small amount of solid.bJ
However, from the viewpoint of ease of handling and dissipation of collision energy as a lost fluid, water or water with a small amount of polyalurine Δkylide or polyacrylamide added is most preferably used. Further, depending on the purpose, various organic solvents capable of dissolving some of the components of the polar wire 1 fiber-forming card cord, or aqueous solutions of alkali or acids such as 1-lium hydroxide may also be used. These fluids are pressurized and jetted from small-diameter nozzles or narrowly spaced sulins 1 to form a high-speed columnar flow or curtain-like flow, which impinges on the fiber sheet. Branching and interlacing of the woven shoulder f is performed.

The pressure applied to the liquid varies depending on the ease of branching of the fiber-forming type fiber or the fiber bundle.
A relatively low pressure of 0.00 Kg/crJ is sufficient, but it is also possible to increase the degree of branching and entanglement by using polymer array fibers and mixed materials, and the pressure can be changed with each treatment. I'll let you. It is also preferably employed to swing the nozzle.

Next, the bound component or the dissolved and removed component is dissolved and removed using a solvent that can dissolve only the bound component or the dissolved and removed component.
Ru. Here, the high-speed fluid flow treatment may be performed after the removal of the bound components or the dissolved and removed components. In this case, after performing needling etc. to form an entangled structure, a sizing agent such as polyvinyl alcohol is applied to temporarily fix the entire nonwoven fabric, and the bonding components or dissolved components are removed.After the components are dissolved and removed, the sizing agent is removed. Or perform high-speed fluid treatment at the same time as adhesive removal,
It is also a preferable method to include a step to prevent the nonwoven fabric from deforming when the binding component is dissolved and removed. Further, high-speed fluid flow treatment may be performed before and after the step of dissolving and removing some components.

However, the interlaced nonwoven fabric 11 of the present invention cannot be achieved simply by implementing the above method, but by appropriately combining some of the many factors described below. The effects of these factors on the structure of the interlaced nonwoven fabric are intricately related, and the combination of the above factors that is sufficient to achieve the present invention is -11! Although it stipulates that
For example, by referring to the influence of the various devices described in 1.

△, − order entangled structure 1f) Density, thickness Primary combination before high-speed fluid flow processing iF4) 'A If the apparent density of the body is too low, the fibers due to the high-speed fMj fluid flow Excessive movement occurs, simply as a result of high-speed fluid flow penetrating the primary entangled structure, and the fibers and their bundles cannot form a channel in which they are tightly intertwined in three dimensions. Conversely, if this apparent density becomes too high, the influence of the high-speed fluid flow will remain close to the surface of the primary entangled structure, and will cause the
A nonwoven fabric having a structure in which fiIIJ fibers and ultrafine bundles are abundantly intertwined cannot be obtained. - The interpolation of the next union structure is preferably between 0.15y/- and 0.25'j/C
i is appropriate.

On the other hand, if the thickness of the -order lattice structure is too thin, the bonded components and dissolved/removed components may be destroyed or peeled off by the high-speed fluid flow, and when attempting to obtain a nonwoven fabric having the structure of the present invention, -
Next, the combined structure is destroyed or cut, and the object of the present invention cannot be achieved. - If the thickness of the secondary combination structure is excessively thick, the shadow of the high-speed fluid flow will hardly reach all of the primary entangled structures. In the latter case, the influence of the high-speed fluid flow can be reduced by increasing the hole diameter of the fluid jet nozzle to 0.2 mmφ to 0.5 mmφ and performing high-speed fluid flow treatment from both the front and center surfaces. can be applied to all layers of the primary entangled structure.

In other words, the requirements for the high-speed fluid flow treatment to obtain the nonwoven fabric of the present invention are as follows: It is necessary to process in 1.

B. High-speed fluid flow processing method C: The main processing method for achieving the present invention is to increase the hole diameter of the fluid injection nozzle from 0.2 mmφ to C5 mmφ, and to reduce the pressure applied to the fluid. 10
Applying high pressure exceeding 0 kg/cm, maintaining the shape of the fluid flow in a columnar shape, quickly removing the ejected fluid from the body to the primary combination side to prevent fluid stagnation, and processing multiple times. For morning sickness, it is effective to reduce the hole diameter of the fluid jet nozzle.

C1-Next combination tla Characteristics of the bonded fiber bundles or ultrafine fiber-forming fibers that make up the structure The bonding components of the bonded fibers are 4f! It is necessary to take into account the characteristics of the dissolved and removed components of the Type II fibers formed in the 11i Edition 1 to be destroyed by the high-speed fluid flow of 41V.

In order to achieve the present invention, it is important to use a material with high breakage resistance. In addition, the thickness and form of the bonded fiber bundle or the pole 111 fiber-forming fiber, the thickness and shape of the pole 111 machine set to be formed, and the types and ratios of the components constituting these, etc. affect the above-mentioned breakage characteristics. It is necessary to take this into consideration.

In producing the nonwoven fabric of the present invention, it is not necessary to use 100% ultrafine fibers, and other fibers may be mixed in as long as the purpose of the present invention is not impaired. Further, the nonwoven fabric of the present invention may be subjected to treatments such as application of a binder resin, raising processing by puffing or It II, dyeing processing, rolling processing, etc., as necessary.
In order to expand the range of application of nonwoven fabrics, it is also preferable to add mechanical properties by adding a beam softener, fatliquor, antistatic agent, antibacterial agent, and fragrance agent. . In particular, by dyeing and finishing the nonwoven fabric of the present invention as it is, or by adding a small amount of binder resin, it is extremely soft and has a good feel, and has a fluffiness of 10 mm without any special napping treatment. The dense, nubuck-like appearance makes it comfortable to wear on bare skin.

The hobbed nonwoven fabric made in this way has excellent flexibility and does not easily lose its shape when used alone, and has a 1a shape retention property especially in wet conditions containing liquids such as water. It has a feeling of sucking in the hand wJ1 and high water absorption,
It has 16 unique features, such as being resistant to paper-like deep creases and strong even though it is thin. For this reason, J3 Mutsu, bandages, wet towels, Tishiko paper,
Cloth: various filters, chemical filters,
Handle parts such as grips, various 7J bars, artificial leather♂t'
It is preferably used for base fabrics for furniture, automobiles, glass river cloth, abrasive cloth, cassette pads, artificial chamois leather, fuel adjustment valves for lighters, various types of gloves, etc.

The following examples are intended to make the present invention more clear, but the present invention is not limited thereto. In the examples, parts and % refer to the serration type assembly unless otherwise specified.

Example 1 A mixture of 94 parts of borisdyrene and 6 parts of polyethylene glycol, including the binding component, is 45 parts, and the IIljMl fiber component is divided into 55 parts of polyethylene derephthalate, so that one filament contains 240 ultrafine 41% ill fibers. Using a 3.5 denier, 51 mm staple of a 1lli string of a polymeric interlayer array C manufactured using a device as shown in Japanese Patent Application Laid-open No. 57-39209, a web was formed through a card and a cross wrapper. Thereafter, needle punching was performed using a needle with one hook to entangle the polymer mutually arranged fibers to produce a nonwoven fabric (a). The apparent density of the nonwoven fabric (a) is approximately 0.19 g/
crj, the thickness was approximately 1.85 mm.

For holes with a hole diameter of 0.25 utrnφ, the distance between the centers of the holes is m2.
From the nozzles arranged in a row at a pitch of 2 mm, a pressure of 1051 ty/crA was applied while the nozzles were oscillated at 51-1 z. Non-HA' placed on a wire mesh support
1i (a) and treated twice with the same strip ('t 'C-C- surface) to obtain a nonwoven fabric (b).The obtained nonwoven fabric (b)
The bonding components, borisdylene and polyethylene glycol, are destroyed over the entire circumference, and the molecular array fiber is t! 1110 The IQ string was branched into a mass of ultrafine fiber bundles, and was intricately intertwined. However, the flexibility was still not that great, the feel was not smooth, and the paper-like folds and wrinkles were annoying.

Next, the nonwoven fabric (a) and the nonwoven fabric (b) were each moistened with polyvinyl alcohol (hereinafter referred to as 1) at 95°C.
1) At the same time as impregnating with VA, the non-woven material is shrunk and dried to remove moisture, and then bonded by repeated dipping and squeezing in trichlor-1-dilene. The components were extracted and removed and dried. The PVA was extracted and removed by drying and drying. The nonwoven fabric obtained from the nonwoven fabric (a) is a nonwoven fabric in which polar 11I fibers are essentially intertwined in bundles, and has excellent flexibility, but when stretched slightly by hand ( ), it shows a large elongation and is difficult to handle. In contrast, the material obtained from the nonwoven fabric (b) was a 4!Am fiber bundle in which the ultrafine fibers facing east could move with each other. The micro-branched microfibers are intricately and densely intertwined throughout the entire layer of the non-woven material, and the melon did not lose its shape even when pulled with one's hands. The surface felt like it was sticky to the hand, and the folded edge also had a smooth curved surface.The fineness of the Kyoku 11I navy blue fiber was approximately 0.11) Density of the nonwoven fabric obtained from the nonwoven fabric (b) with an OO8 denier. is approximately o, 4ov/aa,
The Pp value was 0.55 mmN'.

This is it (Despite the large thickness, the breaking strength of the nonwoven fabric was extremely high at 118 g/1 cm).

On the other hand, the non-woven material Ij(b) odor-(, after dissolving and removing the bonding components with trichlor 1 ethylene and drying, was impregnated with a 7% dimethylformamide solution of polyurethane, coagulated in squeezing water, and then heated at 80°C. It was thoroughly washed in hot water to remove dimethylpolamide and dried.Then, both the front and back sides were lightly puffed with sandpaper, and finished by dyeing with disperse dye at a high temperature of 120℃ using a circular jet dyeing machine. The obtained m V+i is 19 and 0.
．． It is extremely thin at 45 mm, has drapability, is flexible, and has the appearance of high-quality suede.

Example 2 The nonwoven fabric (a) made in Example 1 was heated to 95'C/;,: immersed in a 5% aqueous solution of PVA l-)
At the same time as the impregnation of V△, the non-woven inn was dried to remove moisture, and then soaked in triethylene.
The bonded components were extracted and removed by repeated soaking and squeezing, and then dried.

[ ] Water was sprayed at high speed, and then the Hi-containing treatment was carried out twice on each surface using the same strip 1 as in Example 1.
Simultaneously with the dissolution of VA, branching and entanglement were removed (-■).The remaining PVA/a was extracted and removed with water and then dried.
1llll 41 bundles are branched like melons, and the ultrafine fiber bundles can move freely among themselves.
The navy blue had a densely intertwined m-set structure. This non-woven fabric was very flexible and had excellent shape retention, and when it was slit to 3 mm rh and used as a shoelace, it did not easily break and was extremely strong like a leather lace.

Example 3 A vinyl-based material copolymerized with 820 parts of U, 2-ethylhexyl acrylate and 80 parts of styrene using a multi-component fiber spinning device having a structure in which a stationary dividing element is incorporated. 60 parts of polymer (hereinafter referred to as S resin) as a binding component, (proportion of 40 parts of nylon 6 as a component of t 11 + 4111 parts 'c) filament (having 7 island components in ~, and In each island component (
^i fill Polymer phase n array fiber 1 [4.0 denier, 51] containing about 100 fiber components each
Obtain a sulfur-pulled material of mm, and use it in the same manner as in Example C 4 to obtain an apparent density of 0.17 g/ci and a thickness of 2.2 mm.
I made a non-woven lr. In Example 1, this nonwoven material was subjected to high-speed fluid flow treatment, PVΔ application, and dissolution and removal of bonded components.
was conducted under the same conditions. The fineness of the ultrafine fibers of the obtained nonwoven fabrics was thick, but did not reach O,OO5 deniers, and most of them were o,oioi to O,OO4 deniers. In addition, the obtained non-woven fabric has ultra-fine fibers and free tri-layer fibers intricately and densely intertwined throughout the entire layer, and has excellent flexibility, a smooth feel, and does not bend easily. It was strong with no wrinkles.

When this non-woven fabric was dyed using a metal-containing dye at 95°C under normal pressure and subjected to finishing treatment, a non-woven fabric 11 with a nubuck-like appearance with dense fluff on both the front and back surfaces was obtained.
It was thin and flexible at 0.49 mm, so when I wore it as a T-shirt, I didn't feel any heat even when I was on the A3.In fact, the sweat evaporates quickly into the outside air, leaving my skin supple and supple. It had a nice texture. I also wore it one summer at a time and looked at it, but I didn't see any noticeable deformation or tears.

Example 4 Details of a 5-denier blended spun fiber made from sea island 4 containing a large number of ultrafine fibers in 1 filament I to 1 filament I with a ratio of 55 parts of polystyrene as a bonding component and 45 parts of nylon 6 as an ultrafine fiber component, 63 Form a web through a random uniform bar using a mm stable, and then needle punch. , I'F is 2.5
It was mm.

Hole 1% 0.13 trtm hole has a center distance of 11I
16 from a line of nozzles with lIO16mm bits.
The non-woven fabric was placed on a perforated plate with a number of small holes, and water under a pressure of 0 J/ci was moved, and while the nozzle was vibrated, it was applied to the surface of the non-woven fabric at high speed. .

The same strip A1 was also used from the back side. Thereafter, the wet material was placed in hot water at 95°C to shrink, lightly nipped in a mangle, and then dried. Next, the polystyrene was dissolved and removed by repeating dipping in trichlorethylene and a calibration solution, and then dried. Even the thickest of the ultrafine fibers of the non-woven fli are 0.01 denier or less, and most of them are There were 0, OO3 to O, OO8 deniers.

In addition, the obtained non-woven fabric has extremely soft texture due to the fine fibers and ultra-fine fibers that are closely intertwined with the eastward rod group I1m moving in the form of a vine throughout the entire layer. It was soft and held its shape even when soaked in water, twisted and squeezed. 1 = Has good water permeability and water wiping properties, and is a natural leather chamois 71' that can be used as a wiping cloth! It had the same performance.

Claims (6)

[Claims] (1) Over substantially the entire layer of the interlaced nonwoven fabric, (Δ)0
, ultrafine fibers of 5 deniers or less, and (B) ultrafine fibers constituting an ultrafine fiber bundle are arranged in a state in which the ultrafine fiber bundles have a degree of freedom to move relative to each other.
An interlaced nonwoven fabric characterized by having a structure in which J fiber bundles are mainly mixed and densely intertwined in three dimensions. (2) The interlaced nonwoven fabric according to claim (1), wherein the fineness of the ultrafine Ii Ill is 0.01 denier or less. (3) The interlaced nonwoven fabric according to claim (1), characterized in that the fineness of the ultra-fine Ii strip is less than O,OO5 denier. (4) The ultra-thin fiber J3J and the ultra-fine fiber bundle are obtained by regenerating ultra-fine fibers from a bonded fiber bundle having a cross section in which a plurality of ultra-fine fiber components are interposedly bonded by other bonding components. The interlaced nonwoven fabric according to any one of claims (1) to (3), wherein Q:t i'f'1 indicates that the nonwoven fabric is (5) The ultrafine fibers and ultrafine fiber bundles are made of two or more types of polymeric substances with different solubility in solvents! I
i III The 1JI characteristic is that the fiber is obtained by dissolving and removing at least one component of the fiber, according to any one of claims (1) to (3). Interlaced non-woven fabric. (6) The interlaced nonwoven fabric according to claim (5), wherein the ultrafine fiber forming type II fiber is a molecular phase U array fiber having a sea-island structure and/or a mixed spun fiber. .