JPH08291454A - Nonwoven fabric for durable clothing and its production and clothing - Google Patents

Abstract

PURPOSE: To provide a nonwoven fabric for durable clothing, excellent in touch feeling and strength, further, free from interlaminar separation, hardly causing falling of fiber and excellent in durability to washing and wear and clothing using the nonwoven fabric. CONSTITUTION: This nonwoven fabric has a laminate structure obtained by inserting fabric into space between webs comprising at least two layers and obtained by dispersing ultra-fine fiber having <=10μm fiber diameter in single fiber-like shape and is obtained by three-dimensionally interlacing ultra-fine fibers constituting the web on the laminate surface with ultra-fine fiber which passes through the fabric and ultra-fine fiber of a web on the laminate back side and does not cause interlaminar separation and the ground fabric is raschel net ground fabric having hexagonal tulle fabric mesh and substantial three- dimensional interlacing between the ground fabric and ultra-fine fiber does not exist. A method for producing the nonwoven fabric is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a durable non-woven fabric and a method for producing the same. More specifically, by inserting a special base cloth between webs made of ultrafine fibers, it is a nonwoven fabric for clothing that has a special entangled state.In addition to the conventional performance such as the feel of the ultrafine fibers and the lightweight of the nonwoven fabric, The present invention relates to a non-woven fabric for clothing, which has high strength, has no delamination, has little fiber detachment, and has excellent durability such as washing resistance and pilling resistance, and a method for producing the same. It also relates to clothing using the durable nonwoven fabric.

[0002]

2. Description of the Related Art In recent years, non-woven fabrics have been widely used in many fields in place of woven fabrics. Because of its low cost and high productivity, it can be used as a substitute for conventional woven fabrics, or can be used as a functional non-woven fabric because it can impart properties that cannot be obtained with woven fabrics. Furthermore, the functionality of non-woven fabrics has been utilized in the field of paper pulp as a material,
Supply as a high-performance material has become active.

Among them, the use of non-woven fabrics as a material for clothing has been widespread, and it is used as an interlining for clothing and as a base fabric for artificial leather, or as a disposable clothing for medical and travel purposes. It is becoming more common. As a material for clothing, called a hydroentangling method, a method of injecting a water current on a web to three-dimensionally entangle fibers is drawing attention. This non-woven fabric is a so-called water jet non-woven fabric (hydroentangled non-woven fabric), and it is possible to obtain a non-woven fabric having a texture like a fabric that cannot be obtained by other production methods.

However, most of the clothes that we use every day are knitted fabrics and woven fabrics. In some cases, non-woven fabrics are used instead of knitted fabrics and woven fabrics, and most of them are non-durable, disposable items such as one-way use discarded for the purpose of reducing washing costs and maintenance. is there. In other words, although the use in the field where durability is not required has been expanded, the use of the nonwoven fabric for clothing where durability is required is currently limited.

As a method for imparting durability to a non-woven fabric, there is a method in which a resin is applied after the entanglement or a fiber is melted.
In the method of reinforcing the entanglement point, there remain problems that the nonwoven fabric becomes stiff and the tactile sensation deteriorates as a large amount of resin is applied and the melted portion increases.

Further, by selecting a fiber material, increasing the entanglement pressure and strengthening the entanglement, the entanglement strength is increased and the durability is improved, but when the nonwoven fabric is tightened, the characteristics of the ultrafine fibers are not utilized and the tactile sensation is not achieved. Not only drops, washing,
There is a problem that pilling occurs with repeated wearing.

On the other hand, as a method for imparting durability to the nonwoven fabric while maintaining the touch, a method has been devised to prevent the fibers from falling out by shrinking after the entanglement, but the entanglement is not really strong. Since there is no such problem, repeated washing causes the fibers to loosen and the fibers to fall off.

[0008]

DISCLOSURE OF THE INVENTION The present invention is to solve the above-mentioned conventional problems, and has a good tactile sensation and excellent durability such as washing resistance and pilling resistance, and the production thereof. The purpose is to provide a law and clothing using the same.

[0009]

[Means for Solving the Problems] The present inventors diligently studied the above problems. As a result, in the nonwoven fabric for clothing having a unique entangled state in which a web made of ultrafine fibers dispersed in a single fiber state and a base fabric having a specific structure are combined, not only the touch and strength are excellent, but also long-term An unexpected effect was found that it has anti-pilling properties and durability equivalent to conventional knitted fabrics for washing and wearing. It was also found that new performance can be imparted by using and mixing specific fibers. The present invention has been achieved based on these findings.

That is, the non-woven fabric for durable clothing of the present invention is a web in which ultrafine fibers consisting of short fibers having a fiber diameter of 10 μm or less are dispersed in a single fiber form, and between the webs of at least two layers or more. It is a laminated structure in which a base fabric is inserted, and the ultrafine fibers constituting the web on the front side of the laminate, and the ultrafine fibers penetrating the base fabric and the ultrafine fibers of the web on the back side of the laminate are three-dimensionally entangled. It is characterized in that delamination does not occur and the following conditions are satisfied. (1) The base fabric is a Russell knitted base fabric having hexagonal tulle. (2) Substantial three-dimensional entanglement between the base fabric and the ultrafine fibers does not exist.

In the durable nonwoven fabric of the present invention, the ultrafine fibers are preferably polyacrylonitrile fibers.

Further, it is preferable that some of the ultrafine fibers are rayon fibers.

The clothing of the present invention is characterized by using a durable clothing nonwoven fabric.

Further, in the method for producing a durable clothing nonwoven fabric according to the present invention, a Russell knitted base fabric having hexagonal tulle is inserted between at least two layers of webs in which ultrafine fibers are dispersed in a substantially single fiber state. After forming a laminated body, the laminated body is loaded on a porous support, and the columnar water stream having a pressure of 100 kg / cm ² or more and the porous support are relatively moved, and the columnar water stream is jetted to both surfaces of the laminated body. Then, in the case of composite integration, the ultrafine fibers of the web on the front side of the laminate are three-dimensionally entangled with each other by the first injection, and at the same time, the ultrafine fibers are penetrated into the base fabric, and the ultrafine fibers are further penetrated. It is characterized in that the ultrafine fibers of the web on the back side of the laminate are three-dimensionally entangled.

Hereinafter, the durable clothing nonwoven fabric of the present invention will be described in detail. The fibers used for the durable non-woven fabric of the present invention (hereinafter abbreviated as non-woven fabric) are short fibers having a fiber diameter of 10 μm or less. This fiber is called an ultrafine fiber because it has a very small fiber diameter, and by using this fiber, a nonwoven fabric that is soft and has a very excellent tactile sensation can be manufactured. If it exceeds 10 μm, the tactile sensation is inferior, so that it does not meet the purpose of the nonwoven fabric for clothing of the present invention.

Further, it is preferable that these ultrafine fibers are dispersed in a single fiber form in the web. The fact that the fibers remain in the form of a bundle cannot be said to be truly uniform dispersion, and the fiber bundles and the single fibers have different local entanglement properties, resulting in an uneven nonwoven fabric for clothing, and physical properties such as touch and strength. Is reduced. By uniformly dispersing the ultrafine fibers, it is possible to prevent the nonwoven fabric for clothing from becoming paper-like without giving unnecessary energy during the interlacing.

The lower limit of the fiber diameter is not particularly limited. However, if the fiber is thin, the strength of the single fiber is weak and the fibers fall off due to fiber breakage. Therefore, the fiber diameter is preferably 2 μm or more, more preferably 2.5 μm or more. Is.

The fiber length of the ultrafine fibers used in the present invention will be described. The strength of the non-woven fabric for clothing, which is formed by combining the base fabric and the fibers and entangled with the water flow, is determined by the strength of the base fabric, the degree of the entanglement of the fibers, the single fiber strength, and the fiber length. When the type of fiber is the same using the base fabric peculiar to the present invention, the degree of fiber entanglement and the fiber length are the factors.

When the fiber length is very short, the fibers are easy to move, but it is difficult to bend and entangle the fibers. Therefore, the fibers do not develop a strong entanglement by merely moving, and the fibers fall off, Problems such as peeling occur. If the pressure and energy are increased in order to strengthen the entanglement, the fibers fall off during the entanglement, which is not preferable. If the fiber length is too long, the fibers are bent and are easily entangled, but there is a problem that a pill is easily generated. The generation of pills can be suppressed by loosening the entanglement, but problems such as fiber loss, fiber burning, and delamination occur. On the contrary, if the pressure and energy are entangled to a large extent, the nonwoven fabric for clothing becomes hard, which is not preferable.

From the above, it is considered that the fiber length of ultrafine fibers suitable for entanglement is about 3 to 20 mm, but it is not always limited to this range due to the single fiber strength and the difficulty of entanglement of fibers as described above. Not necessarily.

The types of fibers used in the present invention include, for example, polyester fibers, polyolefin fibers, polyacrylonitrile fibers, polyvinyl alcohol fibers, nylon fibers, urethane fibers and other organic synthetic fibers,
Further, fibers such as regenerated fiber, semi-synthetic fiber and natural fiber can be mentioned.

The polyester fiber is a fiber made of homopolymers and copolymers such as polyethylene terephthalate, polybutylene terephthalate and modified polymers of these polymers. What is a polyolefin fiber?
Fibers composed of homopolymers and copolymers such as polypropylene, polyethylene, polystyrene and modified polymers thereof. What is polyacrylonitrile fiber?
Acrylic fiber, modacrylic fiber, etc. Polyvinyl alcohol fiber means a fiber made of polyvinyl alcohol. Nylon fibers refer to fibers made of polymers such as nylon 6, nylon 66, and nylon 12. Semi-synthetic fibers refer to fibers such as acetate fibers. The regenerated fiber means a regenerated cellulosic fiber such as viscose rayon, polynosic rayon, lyocell or the like, which is prepared by spinning a solution of collagen, alginic acid or chitin. Natural fibers refer to cellulosic fibers such as hemp and cotton, and protein fibers such as wool and silk.

Among the above-mentioned fibers, a particularly preferable fiber is a polyacrylonitrile-based fiber, and when this fiber is used, the anti-pilling property is more excellent than other fibers, and the fiber is hardly dropped, Excellent heat retention.

The non-woven fabric for clothes of the present invention is excellent in moisture absorption and water absorption because it is made of ultrafine fibers and has a large specific surface area. However, by including rayon fibers, it is possible to further improve moisture absorption and water absorption. Can be improved.

The fibers used in the present invention are synthetic fibers,
In the case of a semi-synthetic fiber, it may be in the form of a composite fiber composed of two or more kinds of the above polymers. The cross-sectional shape of the fiber is not only circular, elliptical, but also flat, triangular, Y-shaped,
It may have a so-called atypical cross-sectional shape such as T-shaped, U-shaped, star-shaped or dog-bone-shaped.

Naturally, in addition to the above fibers, a small amount of fibers other than those limited in the present invention can be contained in the non-woven fabric for clothing, but it is within the range of impairing the performance of the non-woven fabric for clothing of the present invention. Don't

Next, the ultrafine fiber web used in the present invention will be described. Examples of methods for obtaining a web having a good texture by using ultrafine fibers include a melt blow method, a wet papermaking method, and an electrostatic flocking method.

Although very fine fibers can be obtained by the melt-blowing method, the web formation is poor and the strength of the single fibers is low, so that the strength of the non-woven fabric is low, and the fibers are often dropped, so that the web of the present invention is very preferable. is not.

A uniform web can be formed on the base cloth by the wet papermaking method or the electrostatic flocking method. In particular, the wet papermaking method is characterized in that not only ultrafine fibers can be formed into a web very uniformly, but also the types of fibers are not limited, and fibers of various types and sizes can be uniformly mixed at any ratio. By using the wet papermaking method, it is possible to produce a web that is rich in variety, is extremely uniform, and has little unevenness. By using such a web, a water flow acts uniformly on the web, and a stable quality can be obtained.

The basis weight (dry basis) of the web to be laminated on each side of the base fabric is preferably 10 to 100 g / m ² within the range in which the tactile feel of the ultrafine fibers is utilized and strong entanglement is performed. More preferably, it is 15 to 70 g / m ² . Here, if it is less than 10 g / m ² , the surface of the inserted base fabric floats, and the tactile sensation of the ultrafine fibers cannot be fully utilized, which is not preferable. Further, if it exceeds 100 g / m ² , it is difficult to entangle the ultrafine fibers and the webs.

By the way, in the spunbond method and the dry method,
It is difficult to produce a web using ultrafine fibers of 10 μm or less, and like the nonwoven fabric for clothing of the present invention,
It is not possible to obtain a product with excellent tactile sensation. In addition, the texture is also inferior, and particularly in the case of a web of 100 g / m ² or less, the unevenness is noticeable, the tactile sensation is poor, and the strength varies widely.

Next, the base cloth used in the present invention will be described.
The base fabric described in the present invention refers to a Russell knitted base fabric having hexagonal tulle. A more preferable specific example of the base fabric is a Russell knitted base fabric having hexagonal tulle as described in Japanese Utility Model Publication No. 60-6468. 6
The Russell knitted base fabric having square tulle has a continuous stitch of 3 courses on a 6-course tulle knitting structure, and the center stitch of the previous continuous stitches of the front yarn which is swung by one wale. On the other hand, tulle stitches formed by entwining a back yarn with a needle to form a loop and waving the back yarn every 3 courses to form a double loop entwined with the central stitch and the loop. It is a base fabric having. The base fabric is also capable of suppressing shrinkage during washing, has a stable knitting structure, has no trouble during entanglement, and has good entanglement when inserted between two or more layers of webs.

As the base cloth, the above-mentioned fibers may be used alone or in an appropriate combination. Thickness is 15-7
A 0 denier (d) multifilament yarn or a monofilament yarn can be used. If necessary, it is possible to use fibers having functionalities such as conductivity, moisture absorption / release properties, antibacterial properties and aromatic properties, or it is possible to treat the base fabric with a resin, an activator or the like. Needless to say, it is limited to a range that does not impair the performance of the nonwoven fabric for clothing.

The base fabric used in the present invention is JIS L10.
It is preferable that the method has a Frazier air permeability of 300 cc / cm ² / sec or more as measured by Method A according to No. 79, Frazier type tester. If the Frazier air permeability is less than 300 cc / sec / cm ² , the water flow used for entanglement will not escape easily, and the action of water flow will weaken on the web opposite to the water jet from the base fabric. It is difficult to penetrate the cloth, which is not preferable.

If the base cloth is too thick, it is difficult for the ultrafine fibers to penetrate the base cloth during entanglement, and the fibers that have penetrated the base cloth are not long enough, so that it is difficult to entangle with the fibers of the opposite web. Therefore, the entanglement between the webs is weak and the structure peculiar to the present invention is unlikely to be formed, so that the peel strength between the layers is weak. Specifically, those having a thickness of 1/10 or less of the fiber length of the ultrafine fibers used in the web are preferable.

Next, the structure of the nonwoven fabric for clothing of the present invention will be described. By using the above-mentioned base cloth and ultrafine fibers and combining the manufacturing methods described below, it is possible to manufacture a nonwoven fabric for clothing having a structure peculiar to the present invention, which is excellent in touch and strength and has excellent durability. That is, it is a web made of ultrafine fibers and has a laminate structure in which a base fabric is inserted between at least two layers of webs, and the ultrafine fibers that make up the web are three-dimensionally entangled, and further form the webs of each other. It is a nonwoven fabric for clothing in which ultrafine fibers penetrate the base cloth and are three-dimensionally entangled, and further, there is no substantial three-dimensional entanglement between the base cloth and the ultrafine fibers, provided that delamination does not occur. It is possible to obtain a non-woven fabric for clothing having a structure unique to the present invention.

Here, a state in which there is substantially no three-dimensional entanglement between the base cloth and the ultrafine fibers will be described. Most conventional non-woven fabrics are those in which a base fabric and a web are entangled and integrated. That is, when the web layer and the base fabric are not separated, the web and the base fabric are laminated one by one and entangled.
The layers are strongly intertwined. On the other hand, when the web and the base cloth of the present invention are used and entangled in the same manner, the web layer and the base cloth are easily separated after the entanglement. When a web and a base cloth that exhibit such a state are selected, the base cloth is inserted between the webs of at least two layers, and entangled by the method of the present invention, then delamination does not occur. It is considered that this is because the fibers constituting the web penetrate through the base fabric and are strongly entangled with each other. In the above state, the ultrafine fibers forming the web are three-dimensionally entangled with each other, and the ultrafine fibers forming the web of each other penetrate the base fabric and are three-dimensionally entangled with each other. It is assumed that there is no three-dimensional confounding. The non-woven fabric is considered to have a good tactile sensation because the entanglement between the base fabric and the web is substantially absent, even though the entanglement is strong enough to prevent separation between layers and separation of fibers. In addition, unexpected effects such as deterioration of appearance due to washing and wearing and less occurrence of pills are exhibited.

Next, a method for producing the nonwoven fabric for clothing of the present invention will be described. First, a method for manufacturing a web will be described. The web used is preferably a uniform web, and an example of the wet papermaking method described above will be described as a specific example of the manufacturing method. First disaggregate the ultrafine fibers in water, then prepare a uniform dispersion,
The web is manufactured using a paper machine. For disintegration of ultrafine fibers, a beater such as a pulper or beater can be used. However, in order to prevent the fibers from being entangled with each other and the fibers from being damaged by the disintegration work for a long time, it is preferable that the disaggregation be performed in the shortest possible time. In this step, it is important to reduce the bundle of fibers as much as possible and to disperse the bundle into single fibers. Immediately transfer the disaggregated fiber dispersion under gentle agitation such as an agitator, dilute if necessary, and add a viscous agent such as a high molecular weight polyacrylamide solution or polyethylene oxide solution to obtain a uniform dispersion. A fiber suspension (slurry) in various dispersed states is prepared. For fibers that are easily disintegrated, a method of dispersing only by stirring with an agitator is preferable. The agitator and other agitator blades are preferably as thick and round as possible so that the fibers do not become entangled.

Using the slurry thus prepared, a web can be obtained by using a paper machine having at least one wire such as cylinder wire, long wire, short wire and inclined wire.

Alternatively, a small amount of binder may be applied to the web before being entangled, temporary adhesion may be performed, and the web may be once wound and then the web and the base cloth may be laminated to perform entanglement. However, the binder used is preferably one whose adhesion is released by the entanglement treatment. For example, water-soluble polyvinyl alcohol and carboxymethyl cellulose are exemplified. Further, the binder component remaining on the web can be further removed by a method such as washing with water or washing with hot water, if necessary.

A laminate in which the above-mentioned base cloth was inserted between the plurality of webs manufactured as described above was loaded on the porous support, and while the columnar water flow was moved relative to the porous support, A high-pressure columnar water stream is jetted from above the laminated body to perform the confounding treatment.

At this time, in order to obtain the target non-woven fabric for clothing, it is necessary to start the entanglement as a laminated body in which the base fabric is inserted between the webs in advance, and the base fabric is exposed on one side. If the entanglement is started, and the web is further laminated on the base fabric side and then entangled, the nonwoven fabric for clothing of the present invention cannot be obtained. That is, since the web surface is already strongly entangled at the first entanglement, it is difficult for the fibers to enter, and it is difficult to firmly stack and entangle the unentangled web so that there is no fiber loss or delamination. It is thought to be because.

Further, the object of the present invention cannot be achieved only with one surface of the web for jetting the columnar water stream. Since the entanglement is not completed on the side opposite to the surface where the columnar water flow first hits, it is necessary to jet the columnar water flow again to sufficiently entangle and prevent the fibers from falling off.

Here, as a method of entanglement to the laminated body, the ultrafine fibers are entangled, and the ultrafine fibers are further penetrated into the base cloth,
It is to three-dimensionally entangle the ultrafine fibers penetrating the base fabric to form a composite unity. Especially when a columnar water stream is jetted on the first surface on the front side of the laminate, the ultrafine fibers of the web on the jetting surface are entangled and at the same time. It is necessary to penetrate the base fabric through the ultrafine fibers and to entangle the ultrafine fibers that penetrate the base fabric with the ultrafine fibers of the web on the back side of the laminate.

The conditions for entangling the nonwoven fabric for clothing by the above method are shown below. The porous support used in the production method of the present invention preferably has a porosity of 40% or less and a size of one opening of 0.2 mm ² or less. If the porosity is greater than 40% or if the size of one opening is larger than 0.2 mm ² , the resulting nonwoven fabric for clothing will have open pores and the tactile sensation of the nonwoven fabric for clothing will be deteriorated. Will be different from.

As such a porous support, a plain weave, a twill weave, or the like, and a wire made of metal such as stainless steel or bronze or a material such as reinforced polyester or plastic such as polyamide, or a metal plate is punched. The porous plate etc. which were obtained by this are mentioned.

When the above web and porous support are used, the water flow is a columnar water flow, and one diameter is 150 μm or less,
The pressure is preferably 100 kg / cm ² or more. The columnar water stream is jetted from a nozzle hole having a small diameter. When the diameter of the water flow is larger than 150 μm, the surface of the nonwoven fabric for clothing is rough, the water flow becomes conspicuous, the surface quality is deteriorated, and the tactile sensation becomes unfavorable, which causes pilling.

The pressure required for the entanglement is preferably 100 kg / cm ² or more. If it is less than 100 kg / cm ² , the fibers in the web are not strongly entangled with each other, so that the fibers are likely to fall off. Further, since the fibers penetrate the base fabric and the fibers are unlikely to be entangled with each other, peeling strength easily occurs between the layers.

It is necessary to arrange the nozzle holes so that the water flow acts evenly in the width direction of the web, and it is preferable that the nozzle holes are arranged in one or more rows in parallel with the width of the web. One or more heads (injectors) equipped with such nozzles can be used as needed.

The interval between water streams (nozzle hole spacing)
Is preferably 1.5 mm or less. If the distance is wider than 1.5 mm, not only the efficiency of entanglement is poor, but also the traces of water flow are not noticeable, which is not preferable.

As a method for causing the water flow to act uniformly on the web, it is necessary to move the water flow relative to the web.
As a method, a method of rotating a conveyor-type support or a drum-type support may be convenient. At this time, the transport speed of the support determines the entanglement state and strength, which affects the feel and physical properties of the nonwoven fabric.

It is important to select an appropriate speed depending on the basis weight of the base cloth, the type of web, the conditions such as the basis weight, and the number of heads. If the speed is too fast, the energy that can be applied is small, and it becomes difficult to obtain sufficient confounding. On the other hand, if it is too slow, a large amount of energy is applied at one time, and the web will be damaged or the entanglement will become strong and the tactile feeling will become hard, so care must be taken.

Further, as a method of improving the surface quality, the nozzle diameter and the nozzle interval are decreased individually or sequentially, the head of the nozzle is rotationally moved, it is vibrated to the left and right, or the support of the web is moved to the left and right. It can be used to vibrate. Further, after the entanglement, a wire mesh of 40 to 100 mesh is inserted between the nozzle and the web, and the columnar water stream is sprinkled to spray the web, so that the surface quality can be improved.

The web which has been subjected to the entanglement treatment in this manner has excess water removed by suction or by wet pressing during or after the entanglement, and then dried with an air dryer, an air through dryer, a suction drum dryer, or the like. Can be used for drying. Further, treatment such as embossing and creping may be performed before drying.

Of course, it is possible to entangle the non-woven fabric with another non-woven fabric such as a dry non-woven fabric and a wet non-woven fabric, a pulp sheet, etc. by a laminating method such as one-sided, both-sided, sandwich, etc. for more detailed purposes. It goes without saying that the range should not hinder the purpose.

The non-woven fabric for clothing of the present invention obtained by the above method is a softening agent, antistatic agent, water repellent, water absorbing agent, S
Application of R agent, hot pressing, embossing, rubbing,
Post-processing such as crepe processing and bending processing can be performed, and thereby new performance can be imparted.

The nonwoven fabric for clothing thus obtained is
It can be cut, sewn and processed into clothing in exactly the same way as knitted fabrics. Also, since the fabric weight is smaller than the base fabric, if it contains fibers that melt with heat,
Instead of sewing, it is also possible to perform fusion bonding by using a device such as a heat seal or a welder.

The nonwoven fabric for clothing of the present invention has a good tactile sensation,
High strength and peeling strength, less fiber loss, and washing /
It has excellent durability when worn and there is little pill generation. Further, it is considered to be suitable as a material for clothing because it is lightweight, has low density, has good air permeability, is easy to dehydrate after washing, and dries quickly.

Further, the one using polyacrylonitrile fiber is excellent in heat retaining property and is suitable for clothing in autumn and winter. Furthermore, since a mixture of rayon fibers has excellent hygroscopicity, it can be used in seasons when sweating is heavy.

The above is an example of the use of the non-woven fabric for durable clothing of the present invention, but it should be noted that the use is not limited to these.

[0061]

The non-woven fabric for clothing of the present invention has a laminated structure in which a special base fabric is inserted between ultrafine fiber webs, and is durable and excellent in tactile sense with the surface entangled in a special state. It is a non-woven fabric. The non-woven fabric for durable clothing of the present invention can be obtained by integrally entangling under a specific condition.

The nonwoven fabric for clothing of the present invention has high strength,
Good texture such as touch, large peel strength between layers,
There is little fiber detachment, durability against washing and wearing is good, and at the same time, it has features that cannot be obtained by conventional methods. The non-woven fabric for durable clothing of the present invention effectively acts in various applications as described above.

[0063]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. In the examples, all stated percentages are by weight.

Next, the method for measuring physical properties of the present invention will be described.
I will explain. 1. Unit weight (g / m ² ) Measured according to the method described in JIS L1096.

2. Thickness (μm), density (g / cm ³ ) Measured according to the method of JIS L1096. However, the initial load was measured at 50 g / cm ² . The density was determined by dividing the basis weight measured in 1 above by the thickness value.

3. Tensile strength (Kg / 20mm) A sample with a width of 20mm and a length of 150mm, span 100m
Tensilon HTM- is the maximum load value until the sample breaks when the sample is pulled at a speed of 200 mm / min. It measured using 100 (made by Orientech company).

4. The texture of the non-woven fabric is very good when viewed by looking at the transmitted light.
It was evaluated on a four-point scale: good, fair, bad.

5. Texture The texture of the nonwoven fabric was the texture of the surface. Also,
After rubbing it with both hands for a while, I judged it as a tactile sensation such as a feeling of being caught in the hand or a sense of discomfort. Both are ◎
Was evaluated as very good, good, fair, bad.

6. Peeling strength Cellophane tape (manufactured by Lion Office Equipment Co., Ltd.) was attached to the nonwoven fabric, and the state when peeled by hand was shown. ⊚ shows almost no fiber dropout (no omission) and no delamination at all, ○ indicates a little fiber dropout, but no delamination at all, Δ indicates many fiber dropouts and partial delamination, × indicates that the layers are separated. Those peeled between the layers were not allowed regardless of the strength of peeling.

7. Piling test Using an ICI type pilling tester of method A according to JIS 1076, operation was performed for 10 hours. Change the appearance of the sample by 1 to 5
It was classified into grades. Grade 3 or higher was considered good. This was pilling.

8. Washing test Washing was performed 50 times according to JIS C9606. The peel strength, touch and touch after washing were examined. In addition, the occurrence of pills due to washing was investigated. Similarly, changes in appearance were classified into grades 1 to 5, and grades 3 and above were regarded as acceptable. This was pilling. However, no washing test was carried out on the product that had been delaminated before washing (evaluation of x).

Example 1 Polyacrylonitrile (PAN fiber: Bonnel made by Mitsubishi Rayon Co., Ltd.) having a fineness of 0.1 denier (fiber diameter 3.8 μm) cut into 6 mm was put into water together with a nonionic surfactant, Vigorous stirring was carried out with a pulper until the bundle of fibers disappeared. Then, after adding water to dilute, add 0.1% polymer polyacrylamide solution (viscous agent) while gently stirring with an agitator, thicken, continue stirring, and suspend uniformly dispersed fibers. A liquid (slurry) was obtained.

Using this slurry, two types of slanted short-mesh and circular mesh are used.
Paper making was carried out by inserting a base cloth between the two layers by a layered paper machine. The fabric weight of the two layers was 30 g / m ² in terms of dry weight, and the total weight of the two layers was 60 g / m ² . The base cloth has a basis weight of 35 g / m ² and a thickness of 0.27 m.
Russell knitted base fabric (manufactured by Forest Textile Co., Phoenix F-355) using 30-denier, 6-filament nylon yarn of m was used.

Next, a stainless wire diameter of 0.112 m
m plain monofilament, plain weave, porosity 3
4.2%, loaded on a conveyor-type porous support having one opening area of 0.0234 mm ² , and jetting a columnar water stream from the head arrangement equipped with nozzles shown in Tables 1 and 2 below. The front and back were entangled once each. After the entanglement, it was dried using an air through dryer.

For the confounding, 5 nozzle heads were used,
The nozzle (water flow) diameter, nozzle (water flow) interval and pressure of each head are shown below. The front surface was entangled with the nozzle arrangement shown in Table 1 below, and the back surface was entangled with the nozzle arrangement shown in Table 2. However, the head of No. 5 on both sides used a thin water flow at low pressure for surface adjustment. By using such a water flow, the water flow trace can be eliminated or mitigated. Therefore, No
The treatment with the heads 1 to 4 was considered effective for the confounding. The web was conveyed at a speed (hereinafter, entanglement speed) of 15 m / min.

[0076]

[Table 1]

[0077]

[Table 2]

Example 2 Instead of the PAN fiber of Example 1, a cationic dye dyeable polyester (C having a fineness of 0.1 denier (fiber diameter 3 μm)) was used.
D.PET) fiber (Tepyrus, manufactured by Teijin Ltd.) cut into 10 mm was put into water together with a nonionic surfactant, and gently stirred by an agitator until the bundle of fibers disappeared. Next, water was added to dilute the mixture, and then a viscous agent was added and thickened while gently stirring, and stirring was continued to obtain a uniformly dispersed slurry. Hereinafter, the same method as in Example 1 was performed.

Example 3 Instead of the PAN fiber of Example 1, PAN fiber (Bonnel manufactured by Mitsubishi Rayon Co., Ltd.) having a fineness of 0.5 denier (fiber diameter 8 μm) was cut into 15 mm. Less than,
It carried out by the same method as Example 1.

Example 4 The PAN fiber of Example 1, a fineness of 0.7 denier (fiber diameter 8 μm), and viscose rayon (rayon) fiber (Corona made by Daiwabo Rayon Co., Ltd.) cut into 10 mm were used. However, the ratio of PAN fiber and rayon fiber was 80/20. The PAN fiber was put into water together with the nonionic surfactant, and vigorously stirred with a pulper until the bundle of fibers disappeared. Then, after diluting by adding water, the remaining rayon fibers are added and gently stirred by an agitator until the fiber bundles disappear, a viscous agent is added, the viscosity is increased, stirring is continued, and a uniformly dispersed slurry is obtained. Obtained. Hereinafter, the same method as in Example 1 was performed.

Example 5 The PAN fiber of Example 1 and a fineness of 0.7 d (fiber diameter 8
μm) and rayon fibers (Corona, manufactured by Daiwabo Rayon Co., Ltd.) cut into 5 mm were used. However, PAN
The ratio of fiber to rayon fiber was 80/20. Less than,
It carried out by the method similar to Example 4.

Reference Example As a reference example, the web single layer of Example 1 and the base cloth were laminated,
First, the web side was entangled and dried under the same conditions as in Example 1. The web and the base fabric were easily separated. It can be seen that the peeled web has sufficient strength and the entanglement is performed firmly. In addition, I entangled from the other side,
Again, it peeled off easily between the layers.

Comparative Example 1 Using a nylon tricot half 20 denier 20 gauge product having a basis weight of 30 g / m ² and a thickness of 0.20 mm, the base fabric to be inserted was entangled in the same manner as in Example 1. The product using this base cloth had substantially the same physical properties as the product of the present invention in strength and touch, but the occurrence of pills due to wearing was observed more frequently than the product of the present invention.

Examples 6 to 7 The web was entangled twice in the front and back under the conditions and the web of Example 1 (Example 6). In addition, the head pressure of No. 1 to 4 is set to 1
It was carried out at a speed of 50 kg / cm ² and a speed of 10 m / min (Example 7).

Comparative Examples 2 to 3 Using the web and the base cloth of Example 1, the heads of Nos. 1 to 4 were entangled at a speed of 5 m / min at a pressure of 50 kg / cm ² (Comparative Example 2). Repeat the front and back confounding three times each,
Entanglement was performed (Comparative Example 3). In all cases, the same procedure as in Example 1 was performed except for the above. In either case, delamination easily occurred. Further, it is understood that not only the entanglement is weak when the pressure is low, but also the energy for the fibers to penetrate the base fabric is insufficient even if the entanglement is repeated with such energy.

Comparative Example 4 Using the web and base fabric of Example 1, the first one side was entangled at an entanglement speed of 40 m / min. The web on the opposite side was not entangled, and when the sample was taken, it easily separated between the layers. From the opposite side, entanglement was performed at an entanglement speed of 10 m / min in the same manner as in Example 1, and then the same method as in Example 1 was performed. The first entangled surface has low peel strength and is likely to cause pills. Since the durability against washing was also poor, it is necessary to entangle both sides with high pressure.

Comparative Example 5 Fineness 1.5d (fiber diameter 12.4 μm), fiber length 38 mm
The same procedure as in Example 1 was carried out except that a PET 30 g / m ² web was prepared using a random card. Despite its high strength, it has a poor feel. It is considered that this is because the fiber diameter is large and the formation is poor. Also,
Delamination easily occurs and the fibers tend to be loosened.

Comparative Example 6 The same procedure as in Example 1 was carried out except that a web obtained by making the PAN fiber of Example 1 in a state where 35% of the entire fiber bundle remained was used. The texture was inferior in the part where the fiber bundles seemed to remain. In addition, during washing, the fiber bundle portion swelled and the fibers became easy to loosen, so the touch was deteriorated and peeling occurred.
Also, pills were easy to generate.

Comparative Example 7 Using the web and the base fabric of Example 1, one side of the base fabric was laminated and entangled, and the same web was further laminated on the side of the base fabric and entangled. The other confounding conditions were the same as in Example 1.
Although the strength and touch were excellent, the surface entangled later was easily peeled off after washing and pills were easily generated.

Examples 8 to 9 Using the PAN fiber of Example 1, a basis weight of 20 g / m ² and an interlacing speed of 20 m / min (Example 8), and 50 g / m ² and 7 m / min (Example 9) were used. Except for this, the same method as in Example 1 was used.

Physical properties of Examples 1 to 9 and Comparative Examples 1 to 7 are shown in Tables 3 to 5 below.

[0092]

[Table 3]

[0093]

[Table 4]

[0094]

[Table 5]

Example 11 Using the nonwoven fabric for durable clothing of Example 6, upper and lower pajamas were prototyped. There was no problem in cutting and sewing.

Example 12 (Try-on test) Using the pajamas top and bottom produced as a prototype in Example 11, 10 people (five for each sex, men J1 to J5, and women L1 to L5) were evaluated for try-on. After being worn for two nights, one cycle of washing was defined as one cycle, and after 20 cycles of testing, the feeling of wearing, the appearance, and the degree of pilling were investigated. ◎ is very good, ○ is good, △ is slightly bad, and × is bad in terms of wearing and appearance.
The grade was evaluated. Pilling is top (front body, collar,
Six parts of the sleeve part) and the bottom part (butt part, knee part, hem part) were visually evaluated.

Comparative Example 8 (Try-on Test) Using a commercially available cotton pajamas, the same test as in Example 11 was conducted.

The results of Example 11 are shown in Table 6 below, and the results of Comparative Example 8 are shown in Table 7 below.

[0099]

[Table 6]

[0100]

[Table 7]

As a result of the try-on test, it was confirmed that the pilling and the appearance after wearing were comparable to those of the conventional cotton pajamas and had a practical durability level. In addition, one of the great features is that many cotton pajamas felt that the non-woven fabric for clothing of the present invention had an even better feel to the touch due to the washing, while the wearing sensation hardly changed after washing.

Further, it was found from the evaluation of the monitor which is drying indoors that the drying after washing is faster than that of the conventional product. Furthermore, it has been reported that it is lightweight and has excellent heat retention properties, and, despite the fact that ultrafine fibers are used, it did not feel slimy or stuffy and had a silky feel. .. It is considered that since it is excellent in heat retention due to acrylic, which is an ultrafine fiber, and absorbs sweat quickly with rayon and also dries quickly, it does not feel unevenness.

Female monitors had better pilling test results than male monitors. It is considered that men are generally heavier and have more friction with bedding.

[0104]

EFFECTS OF THE INVENTION From the above results, the durable non-woven fabric of the present invention has the conventional properties such as the feel of the ultrafine fibers and the lightness of the non-woven fabric, as well as a high strength by the hydroentangling method and no delamination, It was found that this is a non-woven fabric for clothing, which has not only a small amount of fiber detachment but also excellent durability such as washing resistance and pilling resistance. Further, the non-woven fabric for durable clothing has durability at a level comparable to that of conventional products when used as clothing.

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display area D04H 1/42 D04H 1/42 F

Claims (5)

[Claims] 1. A web structure in which ultrafine fibers substantially consisting of short fibers having a fiber diameter of 10 μm or less are dispersed in a single fiber form, and a laminate structure in which a base fabric is inserted between at least two layers of the web. , The ultrafine fibers constituting the web on the front side of the laminate, and the ultrafine fibers penetrating the base fabric and the ultrafine fibers of the web on the back side of the laminate are three-dimensionally entangled, and delamination does not occur, and A durable non-woven fabric characterized by satisfying the conditions. (1) The base fabric is a Russell knitted base fabric having hexagonal tulle. (2) Substantial three-dimensional entanglement between the base fabric and the ultrafine fibers does not exist. 2. The non-woven fabric for durable clothing according to claim 1, wherein the ultrafine fibers are polyacrylonitrile fibers. 3. The nonwoven fabric for durable clothing according to claim 1, wherein a part of the ultrafine fibers is rayon fiber. 4. A garment comprising the durable non-woven fabric according to any one of claims 1 to 3. 5. A porous support after a Russell knitted base fabric having hexagonal tulle is inserted between at least two layers of webs in which ultrafine fibers are dispersed in a substantially single fiber state to form a laminate, and then a porous support. When the columnar water flow having a pressure of 100 Kg / cm ² or more and the porous support are relatively moved while being stacked on top of each other, the columnar water flow is jetted to both surfaces of the laminated body for composite integration. The ultrafine fibers of the web on the front side of the laminate are three-dimensionally entangled with each other by jetting, and at the same time the ultrafine fibers are penetrated into the base fabric, and the ultrafine fibers that have penetrated and the ultrafine fibers of the web on the back side of the laminate are 3 A method for producing a durable non-woven fabric characterized by dimensionally interlacing.