WO1994011560A1

WO1994011560A1 - Natural vegetable fiber-containing composite fiber sheet material having uneven shrinkage or shrinkage wrinkles on outer side

Info

Publication number: WO1994011560A1
Application number: PCT/JP1992/001506
Authority: WO
Inventors: Yoshimitsu Saito
Original assignee: Yamasa Momi Kikaku Co., Ltd.
Priority date: 1992-11-18
Filing date: 1992-11-18
Publication date: 1994-05-26
Also published as: AU2955892A

Abstract

This invention consists of two elements, i.e. 1) the production of a composite fiber sheet material, and 2) the processing of this material. 1) Production of a composite fiber sheet material: (1) a base cloth-forming rear side portion contains shrinkable fiber or fiber capable of being fulled. (2) An outer side-forming portion contains natural vegetable fiber. (3) The compounding of these outer and rear side portions is done during the braiding of an object sheet material, or by punching so as to interlace the fibers, or by laminating. 2) Processing of the composite fiber sheet material: (1) the composite fiber material is processed with a polymer solution or adhesive paste or a sizing agent so as to prevent the occurrence of processing strain in the outer side portion thereof and improve the processed shape retaining effect. (2) First, the composite fiber sheet material is subjected to a physical deformation process. (3) Simultaneously with or after the physical deformation process, the wetting or heating of the sheet material is done to shrink the same material. (4) In a step preceding the physical deformation process, or a step to be carried out simultaneously with this process, or a step subsequent to the same process, the sheet material is subjected to the application of a function adding agent or a finishing agent. Thus, the outer side portion of a natural vegetable fiber-containing fiber sheet material is unevenly shrinked or wrinkled, and rendered expansible and flexible by producing a composite fiber sheet material as described in 1) and processing the sheet material as described in 2).

Description

Specification

Composite fiber sheet containing natural vegetable fibers with concave / convex / shrinkable / shrinkable wrinkles on the surface

The present invention relates to a technical field of producing papers, nonwoven fabrics, and the like, and processing a fibrous sheet-like material that is a composite of the same or different types of fibrous sheet-like materials. Background art

1. Conventional technology

Conventionally, paper and non-woven fabric, etc. were combined with the same or different types of fiber sheet-like materials.However, in the case of such composites, It was bonded using an adhesive or a plastic film.

One non-woven fabric of this composite was composed of synthetic fibers, chemical fibers, etc., or contained natural vegetable fibers, but it was either directly or indirectly. There was no possibility of use that would contact the human body.

In addition, even if the adhesive is applied to papers to form a composite body with other fiber sheets, it is directly or indirectly applied to the human body in the same manner as a nonwoven fabric. The potential for contacting use has been strong.

The reason is that they were not suitable in terms of bending resistance, physical strength, elongation, and anti-cleaning properties. 2. Problems with conventional technology

Conventional composite fiber sheet-like materials had the following technical problems.

(1) Tactile sensation, comfort

At least one side of the composite fiber sheet-like non-woven fabric is composed mainly of base fibers, and its material is more hygroscopic and more moisture-absorbing than natural vegetable fibers. Had poor touch and comfort.

(2) Adhesiveness

It was common practice to laminate two or more fiber sheets using an adhesive.

This is a disadvantage in that the rigidity is large in the bonding surface or the adhesive layer, and delamination occurs at that location due to the effect of the solvent on the adhesive. Was

(3) Softness

By combining two fiber sheet-like materials to form a composite, the rigidity of the adhesive surface or adhesive layer described in (2) is increased, and softening is performed. Otherwise, the respective fiber sheet-like materials for compounding were combined to have a stiffness greater than the sum of the respective stiffnesses. Disclosure of invention

The means to solve the problems of the conventional technology in the present invention are as follows. 1. Problems of conventional technology or means to solve the problem

(1) About comfort

Needless to say, paper stands are nonwoven fabric stands, and 50% of natural vegetable fibers or their processed fibers or their mixed fibers are used. Including the above, the fiber may be long (for example, 10 to 20 mm or more) or short (for example, about 5 mm or more). The following are mixed), and the material absorbs and absorbs moisture.

(2) Adhesion

On the backing base cloth, a web-like body or a non-woven fabric containing natural vegetable fiber or its processed fiber or a mixed fiber thereof is placed. Alternatively, the composition liquid (hereinafter also referred to as stock liquid) is allowed to flow naturally onto the base cloth, or under pressure, or to flow through a mechanical strainer. Then, a sheet-like material is formed into a composite sheet-like material, and the composite sheet-like material is used in a production composition, or is used as a needle punch. Punching with a fluid such as air, nitrogen or water (hereinafter simply referred to as “punching”). ) To form intermingling of the fibers with each other, and to entangle the fibers of the two fiber sheet-like materials to unite them. And joined together.

In addition, in the case of laminating a double-fiber fiber sheet by laminating, a composition containing a binder for base cloth is used. The liquid is applied and processed to form a film, or After a sheet-like material such as paper or non-woven fabric having the same composition as described above, it is subjected to binding treatment by medium- or low-molecular-weight or polymer processing, and then a binder or adhesive. Lamination is performed using, and reliable bonding or adhesiveness can be obtained.

(3) About rigidity

The multiple fiber sheet materials are subjected to physical deformation such as kneading, bending, squeezing, agitation, tumbling, embossing, etc. to make them flexible. .

(4) Unit density of fiber sheet

In relation to the constituents of the fiber sheet, the fiber sheet may be subjected to physical deformation, softening, shrinking by humidification or heating, or shrinking or shrinking. The unit density of the object has been increased.

2. Action and effect

(1) Tactile sensation and comfort

By containing 50% or more of natural vegetable fibers or their processed fibers or their mixed fibers in the paper or nonwoven fabric, it absorbs and releases the materials. Wetness is manifested as a remarkable property, and the strength is also increased due to the fact that, in the production composition, or by punching and driving fibers in the thickness direction. In addition, it adds to the structure's moisture absorption and release properties to make it even better, giving it a natural tactile sensation and a comfortable feeling of use.

(2) Relevance to adhesiveness

A minimum of 50% of long and short natural vegetable fibers or their processed fibers or their blended fibers, and other fibers In the manufacturing composition of the monolithic material, or by punching, the longer fiber acts as an anchor to improve the entanglement and to improve the unity. Present.

The base where the stock liquid is cast flows down by natural flow or under pressure, and the glue and short fibers penetrate into the base cloth. However, a surplus effect with punching can be obtained.

In the case where the composite fiber sheet is manufactured by laminating, the front side is made of medium-low molecular weight or high molecular weight fiber, and the fiber between the fiber bundles. The retention including bonding treatment and non-stretching treatment can prevent the occurrence of delamination.

(3) On the flexibility and its relationship

Conventionally, since a composite fiber sheet was formed using an adhesive, the rigidity of the material and the adhesive layer, and the rigidity of the press state due to the bonding pressure during processing, did not increase. As a result, the added value is larger than the original one. However, in the case of the present invention, the rigidity is relatively small because there is no such factor. I

In the case where the composite fiber sheet is manufactured by laminating, it is subjected to physical deformation after laminating. Cracks and breaks, and partially releases the hardened state of the base cloth and has the effect of lacking in softness, making the whole soft. What is (4) About retention by medium or low molecular weight or high molecular weight

The natural fiber-containing surface of the composite fiber sheet is treated with a medium to low molecular weight or polymer, so that the bond between the fibers and the non-stretch treatment are included. Because it is processed, the natural fibers on the front side are hardened and kept flat, for example. After pre-treatment in this way, physical deformation processing is performed, and simultaneously or after that, shrinking processing such as heating, humidification, hot water immersion, and immersion kneading is performed. The processing strain, wrinkles, breakage, and their added states generated in the composite fiber sheet are not lost and are retained by the composite fiber sheet. .

However, if the retaining process as described above is not performed, the jerk, the processed shape, etc. disappear, and a smooth state is obtained.

Maintaining the state as described above means that the surface has a concave-convex shrinkage and a shrinkage wrinkle, has a soft feeling, an elastic touch, and an extensibility. It has a large capacity, has a drapability, has stickiness, increases tear strength, and has high practical performance.

In addition, water treatment is imparted by retention treatment by processing of medium- and low-molecular or high-molecular substances on the front side, and the cleaning resistance is increased.o

(5) Physical deformation, shrinking and shrinking

As described above, the natural fiber content of the double fiber sheet After applying a retention process with a medium or low molecular weight or polymer on the front side of the surface, a physical deformation process is applied by wrinkle-flexible processing, and the front side retention layer is processed. Creates distortions, wrinkles, breaks and relaxations, and makes the other cross-pieces flexible.

Therefore, this physical deformation processing is inextricably linked to the retention processing by medium or low molecular weight or high molecular weight processing, and it is the first time that these processings are combined. It is intended to impart a change to the natural fiber-containing surface of a fiber sheet-like material and to retain the change.

The shrinking process is performed after the physical deformation by the wrinkled softening process, or simultaneously, by heating, humidification, hot water immersion, immersion kneading, or the like. The humidification and hot water immersion are performed after the physical deformation processing by the wrinkled softening processing, and the immersion kneading is mainly performed by the physical deformation processing or the softening effect is further enhanced. To assist you. The composite fiber sheet-like material shrinks in accordance with the processing strain, breakage, relaxation, and constituent fibers, woven tissue, etc., generated by physical deformation. The structure of the composite fiber sheet becomes dense.

The shrinking process is performed by heating, humidification, hot water immersion, immersion kneading, etc., as in the shrinking process, but the structure of the composite fiber sheet-like material becomes dense and the fiber Entanglement becomes better.

After physical deformation, it is effective to further immerse and knead. In particular, the embossing platform is immersed and kneaded. BEST MODE FOR CARRYING OUT THE INVENTION

BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the invention will be described based on an embodiment.

Example

Les chromatography Yo emission of plain weave napped. (For example, the thickness ^{2 0 1 s X 2 0/} 2 5: 4 2 x 4 6 present) Thickness 0 6 0 mm even for ne base over scan (on the back of the On the brushed surface, as a stock liquid for forming the front side, 50% of irregular mulberry with a fiber length of 3mm to 30mm, 30% of panolep, Curtain flow coating so that the dry thickness of the stock solution consisting of 20% leek and sizing agent is about 0.17 mm Then, in an incompletely dried state of about 80%, needle punching is performed with about ²⁰⁰ holes Zin2, and the fibers are entangled to form a fiber sheet on the front and back. To join.

Next, apply 80 gm ² of a 25% solid content solution containing solvent-type polyurethan and its cross-linking agent as two solutions to the front side and dry it.o

In this way, the natural fiber on the front side of the composite fiber sheet is impregnated with the polymer solution to include the bonding between fibers and the non-stretching treatment. The natural fibers on the front side are hardened by retaining processing to keep them flat.

Next, the composite fiber sheet is subjected to physical deformation, for example, wrinkle-flexible processing independently. That is, the platform in this example uses an apparatus as disclosed in Japanese Patent Publication No. 59-6953 published by the Japan Patent Office. This device is provided with a plurality of grippers consisting of a pair of grippers at predetermined intervals, and at a predetermined position of the grippers, By holding or holding the multiple bodies with a gripping tool, the gaps are brought close to each other to create slack in the complex, and the gripping tool is rotated or rocked. Combine it with hand wrinkles, and then perform wrinkle-flexible processing, then heat, humidify, urn.i pickle, immersion kneading, etc. The sheet-like material shrinks in accordance with the strain, breakage, and relaxation of the sheet-like material generated by the physical deformation processing, and the constituent fibers, the fiber structure, etc., and is soft and uneven on the front side. Manufactures multi-component fiber sheet material that forms a shrinkable or shrinkable wrinkle and has a natural appearance with rich undulations .

The above is an example of the implementation, but a few words about raw materials and additive methods are given.

First, the raw materials are described. As the fiber sheet-like material on the back side, fibers that have shrinkage and shrinkage to water or heat are used. At least 20% or more of the single fiber or the mixed fiber should be used as the amount of the physical properties that can be obtained by appropriate processing. A web-like body, a woven fabric, a knitted fabric, a non-woven fabric, or their raised fabric, etc., contained in all the fibers are used.

On the front side are those that contain natural vegetable fibers or their processed fibers or their blended fibers, and the physical properties of which appear. To 50% or more of the total fiber Then, the force, the length of the fiber is composed of the short and long force, and it is composed of the force, and as the stock liquid, or the like. The composition is used in the form of a web and in the form of a fiber sheet.

The fibers constituting the above-mentioned double-sided fiber sheet on the back and on the front side may be of the same quality as long as the required physical properties are common.

In other words, the property to water is that it absorbs water by immersion, coating, and steaming, and shrinks or deforms after drying. Is mainly made of natural vegetable fibers, such as goose, mulberry, mulberry, mitsumata, pulp, hemp, cotton, etc., and the processed fibers are rayon, tensel, etc. is there .

The heat-shrinkable material is mainly a base fiber, which has a softening region at least below the melting point of at least 10 ° C. Things are used. For example, it can be used even if it is a polyrefin system (single-component or multi-component).

In addition, Acrynorre, Polyvinylinole Anorreco, Bininole, Nylon, Poliuretan, Poliestenore, and many others It is a kind of component system.

Animal fibers such as wool and protein-based fibers such as silk can be used as the compactible fiber.

In addition, as a processing material for a double fiber sheet, a general thermoplastic resin is used for a polymer processing liquid, a binder, an adhesive, and the like. Such as softeners and colorants Functionality imparting agents such as finishing agents, water repellents, oil repellents, antibacterial agents, deodorants and flame retardants can be used as those used in ordinary fiber processing.

Next, the processing method is described.

For the formation of the fiber sheet on the front side, the stock liquid or other composition liquid is allowed to flow naturally onto the base cloth, or the pressure is increased. Sheet to form a sheet-like material, or a web-like material or a sheet-like material (eg, (For example, a non-woven fabric), and punching, or laminating using a binder or adhesive to integrate them, or use these processing methods. It is used together.

No ,. Regarding the ching, please refer to Needleha. It is a device that injects gas, such as air and nitrogen, or a fluid, such as water, into a ching, tufting, or air.

If the composition liquid flows down onto the base cloth under pressure, the fibers may be entangled, so it is not necessary to perform the punching. May be.

In order to obtain good retention on the front side, a film solution such as a polymer solution or powder, a paste, or a sizing agent must be used. Alternatively, a substance having the performance of a binder of the fiber or the performance of integrating the filling is provided.

Methods of performing physical deformation processing after these processing include kneading, bending, squeezing, stirring, stirring, molding, and molding. Pushing and other methods can be used.

For shrinking and shrinking, submersion in water, blanching, steam mixing, shigger or shrinking machine, jet dyeing machine, etc. can be used. In addition, a compacting machine, a jet dyeing machine and the like also serve as physical deformation.

A similar apparatus can be used for a platform to be added using a function-imparting agent or the like.

For heat shrinkage, high-frequency, far-infrared, hot air, etc. heating can be used.o

The shrinking and shrinking processes by humidifying and heating, and the addition of resin, coloring, and function-imparting agent are performed at the same time as or before the physical deformation process. At the process or later stage, it is possible to carry out the process.

On the front side of the composite fiber sheet, medium or low molecular weight or high molecular weight processing is applied to improve the retention of processing distortion or wrinkles, etc. There is a platform that performs the same processing as

In this case, a difference is made between the processing on the front side and the processing on the back side, and the processing on the back side is a force that makes the retaining property relatively inferior to that on the front side, or after shrinking. That is.

In addition, regarding the composition of the product, the base sheet is on the back side, and natural vegetable fiber or its processed fiber or their mixed fiber is contained on top of it. Although the two-layer structure in which the fiber sheet material is processed on the front side has been exemplified, the fiber sheet material on the front side may also be formed on the back side of the base sheet. To All that can be done as appropriate.

This platform has a three-story structure, with both sides of the base sheet on the surface. What forms the surface layer containing natural vegetable fibers can be used as an intermediate layer in the case of a multi-layer structure of four or more layers, but even in that case, it can be used as the surface layer. Need to be of the same kind. Possibility of industrial use

The bicomponent fiber sheet-like material of the present invention includes a hat, a bunorezon, a coat, a slipper, an indoor shoe (footwear), a leather cushion, a wall, and the like. It can be used in the field of accessories such as accessories, miscellaneous goods, clothing, interior and interior materials.

Claims

- The scope of the claims

1. A web-like material that contains at least 2% by weight of monofilament or mixed fiber that shrinks or expands due to water or heat. Body, woven fabric, knitted fabric, non-woven fabric or their raised fabric strength <base cloth so that it is on the back side, and natural base material on the second base cloth Place a web-like or non-woven fabric containing 50% or more of fibers or their processed fibers or their mixed fibers, and place the base in a liquid composition. It flows down by natural flow or under pressure on the ross, or is machined to form a sheet-like material to form a multi-unit sheet-like material. This composite sheet may be used in the manufacturing composition and / or needle punching, tufting, or air or nitrogen. After the fibers are entangled with each other by punching with a fluid such as water, the fibers are entangled with each other, and after that, the fibers are processed to increase the fiber density. Includes at least the front side containing natural vegetable fibers, including medium- and low-molecular or high-molecular-weight processing of fibers and bundling between fiber bundles and non-stretch processing By performing retention processing, the direction of the fiber and the fiber bundle is changed by physical deformation such as kneading, bending, squeezing, stirring, tumbling, embossing, etc. Alternatively, the fibers and fiber bundles may be broken and subjected to shrinkage / shrinkage such as humidification, heating, immersion in hot water or immersion kneading at the same time or after the processing. And natural shrinkage of the fibers and composition that make up the backside base cloth. Concave and convex shrinkage or shrinkage wrinkles are formed on the surface containing fiber Composite fiber sheet containing natural vegetable fibers characterized by imparting shrinkage and softness, with uneven surface shrinkage or shrink wrinkles on the front side .

2) It contains more than 5% by weight of natural vegetable fiber or its processed fiber, or its blended fiber, on both sides of the base cloth. A three-layer structure consisting of a tube-shaped material or a non-woven fabric, etc., is punched and reinforced to form a multi-layered structure. After increasing the fiber density, at least the surface containing natural vegetable fibers is bonded to the fibers and the fiber bundles by medium or low molecular weight or high molecular weight processing, etc. The fiber is processed by physical deformation such as kneading, bending, squeezing, stirring, tumbling, embossing, etc. Change the direction of the fiber bundle and / or break the fiber and fiber bundle, and at the same time or add The natural vegetable fiber according to claim 1, characterized in that the natural vegetable fiber is subjected to shrinkage or expansion processing such as humidification, heating, or immersion in hot water or immersion kneading afterwards. A composite fiber sheet with unevenly shrinking or shrinking wrinkles on the front side containing

3. Knead, bend, stir, and tamper with the surface of the composite sheet at the same time as or after the preservation by medium or low molecular weight or high molecular weight processing. Performs physical deformation processing such as ringing, embossing, etc., or after or after the processing, by humidifying, heating, immersing in hot water or immersing and rubbing. Shrinkage

• Coloring, tree processing, etc. Claims 1 and 2 are characterized in that they are appropriately selected from fat processing, flame-retardant processing, softening processing, water-repellent processing, etc., and have concaves on the front side containing the natural vegetable fibers described in claim 1. A multi-ply fiber sheet with convex or contracted wrinkles.

4. The base cloth on the back side contains 50% or more of natural vegetable fiber or its processed fiber, or a mixed fiber thereof, and contains 50% or more of the base fiber. A film is formed by applying and processing a composition liquid containing a binder for the loss, or a sheet-like material such as paper or non-woven fabric having the same composition as the composition. After carrying out preservation processing by medium or low molecular weight or high molecular weight processing, and then laminating with a binder or adhesive, this composite sheet is rubbed, Performs physical deformation processing such as bending, stirring, tumbling, embossing, etc., and humidification, heating, or immersion in hot water at the same time as or after processing , Or fibers that have been subjected to shrinkage processing such as immersion kneading to form the back-side base cloth. It is characterized by forming irregularities or shrinking wrinkles on the front side containing natural vegetable fibers by shrinking and expanding the composition, and imparting elasticity and flexibility. A composite fiber sheet containing natural vegetable fibers and having a concave-convex shrinkage or shrinking wrinkle on the front side.