JPH09170137A - High-density woven fabric for night cloth material and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a high-density woven fabric for night cloth material suitable for tick, inhibiting cotton from removing and preventing dust and mites from invading into by treating a specific woven fabric under specific conditions to cause large shrinkage. SOLUTION: Fibril type conjugated fiber filaments in which the polyester component and the polyamide component are jointed side by side at a ratio of (0.05-0.95)/(0.95-0.05) are used as weft, while filament yarns of higher filament denier than that after the fibril type conjugated fiber filament yarn is fibrillated are used as warp to weave a fabric. Then, the weft of the fibril type conjugated filament are fibrillated to develop a number of weft filaments of <=0.5 denier. At the same time, the weft filaments are more bent as a strand to develop larger shrinkage of the woven fabric in the weft direction to give the objective high-density woven fabric for night cloth material of the plane woven texture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-density woven fabric for bedding material and a method for producing the same.

More specifically, a so-called amenity effect (such as prevention of cotton shedding and intrusion of dust and mites) is made of a woven fabric composed of high density using special yarns of weft and warp. The present invention relates to a high-density woven fabric for bedding material that can have a comfort effect) and is most suitable for a futon side cloth or a futon cover, and a method for producing the same.

[0003]

2. Description of the Related Art Conventionally, high-quality cotton yarn has been put to practical use as a material for high-density woven fabrics. It had some disadvantages.

Therefore, as a material for high-density woven fabrics, a technique for producing a long fiber yarn (filament yarn) of synthetic fibers has been developed, and the use of an ultrafine filament yarn has been studied. However, there is a problem that the feeling is paper-like and the surface quality such as gloss is lacking, so that it has not been put to practical use at present.

That is, for example, Japanese Patent Application Laid-Open Nos. 57-117647 and 58-76569 disclose a fibril having a specific cross-sectional shape having a certain shape, for example, in order to improve the feeling, gloss and the like. There has been proposed a method of fibrillation by applying a special chemical treatment using a modified composite filament yarn.However, it is necessary to perform a special chemical treatment. Was not the target.

On the other hand, in recent years, the use of high-density woven fabrics or the like on the futon side, etc.
Consideration has been given to sleeping materials that have an effect of preventing the infestation of ticks, etc., and with the recent trend toward health and comfort,
There is a growing demand for a high-density woven fabric for bedding materials that can have a so-called amenity effect (comfort effect) such as preventing cotton shedding and preventing intrusion of dust and mites.

[0007]

SUMMARY OF THE INVENTION In view of the foregoing, an object of the present invention is to construct a high-density woven fabric using at least a fibrillated composite filament yarn, and based on the structure of the high-density woven fabric, To provide a woven fabric for a bedding material which is optimal for a futon side lining and a futon cover which can have a so-called amenity effect (comfort effect) such as prevention of cotton shedding and prevention of dust and tick intrusion. Specifically, it is an object of the present invention to provide such a high-density woven fabric for a bedding material and a method for producing the high-density woven fabric for a bedding material.

[0008]

The high-density fabric for bedding material of the present invention which achieves the above-mentioned object has a polyester component and a polyamide component of 0.05 to 0.95: 0.95 to 0.
The fibrillated composite fiber filament yarn having a bonding ratio of 05 is divided into the respective components to form a weft containing a weft filament fiber having a single fiber fineness of 0.5 denier or less. Is woven using a multifilament yarn having a single fiber denier larger than the single fiber denier after the fibrillated type composite fiber filament yarn is fibrillated, and the weft filament is bent to a larger extent and the fabric shrinks. A high-density woven fabric for bedding material, characterized in that the density is increased.

In a preferred embodiment of the high-density woven fabric for bedding material of the present invention, the woven structure is a plain woven structure, or a warp having a total denier of the warp smaller than the total denier of the weft is used. Or the weft filament yarn is a bulky processed yarn.

Further, the method for producing a high-density woven fabric for bedding material according to the present invention is characterized in that
˜0.95: 0.95 to 0.05, a fibrillated composite fiber filament yarn joined at a joining ratio is used as a weft, and a warp is formed after the fibrillated composite fiber is fibrillated. After weaving a woven fabric using filament yarns having a monofilament denier larger than the monofilament denier, the fibrillated composite fiber filament weft is fibrillated, and the weft yarn has a monofilament fineness of 0.5 denier or less. Production of high-density woven fabric for bedding material, characterized in that a large number of filament fibers are produced, and the weft filament is bent to a greater extent to cause greater woven shrinkage in the weft direction, thereby obtaining a densified woven fabric. Is the law.

In the method for producing a high-density woven fabric for bedding material according to the present invention, a preferred embodiment is that the weaving structure is a plain weave structure, or that the warp has a total warp denier smaller than the weft total denier. Is used.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail below.

[0013] The high-density woven fabric for bedding material according to the present invention comprises a polyester component and a polyamide component in an amount of 0.05 to 0.95:
A fibrillated type composite fiber filament yarn obtained by joining a joining ratio of 0.95 to 0.05 is divided into each component, and a weft yarn containing a weft filament fiber having a single fiber fineness of 0.5 denier or less is used. On the other hand, the warp is woven using a multifilament yarn having a monofilament denier larger than the monofilament denier after the fibrillated composite fiber filament yarn of the weft is fibrillated. It will be. By adopting such a woven structure, the weft filament is bent to a larger extent, and the woven fabric is shrunk and densified.

In the present invention, the high-density woven fabric structure can effectively prevent cotton wool when used as a futon side fabric, and can prevent pests when used as a futon side fabric or a futon cover. The invasion of pests such as mites can be shut out without special use of repellents and the like, and the above-mentioned object can be achieved.

In particular, in order to obtain a high-density woven fabric, for example, the polyester component and the polyamide component in the fibrillated conjugate fiber used as the weft have a high shrinkage difference of 10% or more due to rapid heat treatment in boiling water. It is desirable to use yarns constituting a shrinkage component and a low shrinkage component, respectively. And it is especially preferable that the high shrinkage component is made of polyester and the low shrinkage component is made of polyamide.

The single fiber denier after fibrillation of the low shrinkage component (division into each component in the composite fiber) is 0.5 d
In any case, after the fibrillated composite fiber filament yarn is divided into the respective components, in any case, the single fiber denier is a weft containing a filament of 0.5 denier or less. It is important in realizing. As described later, it is important that a multifilament yarn having a single fiber denier larger than the single fiber denier after the above-mentioned weft filament yarn is fibrillated is used for the warp.

The fibrillated composite filament yarn is produced as a yarn by subjecting it to a drawing process or a drawing twisting process as in the case of ordinary synthetic fibers, and the yarn is further subjected to a bulky process. This is preferable for further improving the texture of the obtained fabric.

For example, the bulk processing is preferably a false twist crimping process capable of obtaining a false twisted yarn having a loop or a coil, or a bulk processing by a fluid processing process capable of obtaining a loop yarn or the like.

A preferred production method for obtaining the fibrillated conjugate fiber as described above is, for example, a spinning speed of 25.
A high-oriented fibrillated composite filament undrawn yarn or incompletely drawn yarn composed of polymers having different Tg temperatures (glass transition temperatures) spun at a speed of at least 00 m / min is converted to a Tg temperature of the polymer having a higher Tg temperature or lower. , Tg
Stretching at a temperature equal to or higher than the Tg temperature of the polymer on the lower temperature side.

In the above-described production method, false twisting may be performed during stretching, or a loop yarn may be formed by air treatment after stretching and temporary twisting. In particular, when the fibrillated conjugate fiber described above is described in detail,
The rapid heat treatment in boiling water means that fibers are instantly put into boiling water for processing, and is different from the case where the temperature is gradually raised while being exposed to steam before immersion in boiling water. It is a concept. It should be noted that dry heat treatment may be performed instead of boiling water, but the treatment effect tends to be slightly reduced. If the difference in shrinkage between the high shrinkage component and the low shrinkage component due to the rapid heat treatment is, for example, 10% or less, fibrillation is unlikely to occur, so the larger the difference in shrinkage, the better. Particularly, bulky processing is applied to the fibrillated yarn. This has a further effect on increasing the bulk after fibrillation. In addition, as a method of examining the degree of the difference in shrinkage, both components can be decomposed and measured by measuring the residual elongation or the fineness increase rate. In such a fiber, as the combination of the high shrinkage component and the low shrinkage component constituting the conjugate fiber, a combination of polyester and polyamide, polybutylene terephthalate and polyamide, high shrinkage polyester such as isophthalic acid copolymer and polyamide is preferable. Used.

The bonding ratio between the polyester component and the polyamide component needs to be in the range of 0.05 to 0.95, and the cross section of the cross-sectional shape which can be easily fibrillated due to the difference in properties between the two components. It is important to use one that is composed of one component and the other component of a shape that extends radially in at least two directions, and that is composed of segments that join between the segments. Is a good one.

FIG. 1 shows an example of this model structure. FIGS. 1 (a) to 1 (d) are model cross-sectional views showing four examples of the structure of the fibrillated conjugate fiber used in the present invention. FIGS. 2 (a) to 2 (d) are FIG. 1 is a model cross-sectional view showing four examples of the structure of the fibrillated conjugate fiber used in the present invention after fibrillation in FIG. 1, wherein A is a polyester component as a high shrinkage component, and B is a polyamide as a low shrinkage component. Component.

The arrangement of the component A and the component B may be reversed, but the shrinkage difference effect may be reduced. The single fiber denier of at least one component such as a low shrinkage component after fibrillation is preferably 0.5 d or less, and 0.1 d or less.
It is more preferred that: By using such an ultra-fine filament yarn, a composite bulky yarn having a soft peach skin touch and a spun like feel can be obtained.

In the case of performing bulk processing, the processing includes the above-described false twist crimping processing or fluid turbulence processing processing. If you want more stretch, the latter is suitable. In order to give a slightly more “bulge” feeling, it is good to apply interlace interlacing processing.

An example of a method for producing a fibrillated conjugate fiber as described above will be described.
A highly oriented fibril type composite filament undrawn yarn or an incompletely drawn yarn spun at a high speed of 00 m / min or more is used.
The spinning speed varies depending on the combination of the composite components. For example, in the case of polyester and polyamide, when the speed is 2500 m / min or less, poor winding tends to occur due to swelling of the polyamide component, and in ultra high speed spinning of 8000 m / min or more, Attention must be paid to the yarn-making conditions because insufficient shrinkage of the polyester component is likely to occur. In addition, undrawn yarn or incompletely drawn yarn is generally used in the synthetic fiber industry,
These yarns are called Y and POY.

For example, when a polyamide having a glass transition point Tg temperature of room temperature or less and a polyester having a Tg temperature of 70 to 90 ° C. are combined, the stretching temperature is optimally around 70 ° C. This is not preferred because the shrinkage of the polyester having a high shrinkage component is reduced. on the other hand,
When the temperature is close to room temperature, the effect of setting the polyamide is reduced, so that it is susceptible to a change in room temperature. The above stretching temperature is
It can also serve as the false twist heat setting temperature when the false twisting process is performed simultaneously with the drawing. The draw ratio is preferably as high as possible to increase the shrinkage of the polyester, and this also depends on the spinning speed. For example, a draw ratio of 1.8 to 2.0 times is suitable for a spun yarn of 3500 m / min. . The effect of fibrillation is smaller as the stretching ratio is lower. Such a draw ratio may be applied to the case where the false twisting is performed at the same time, and the above-described draw ratio is equivalent to the ratio performed in the normal twisting during the drawing. The number of false twists in the false twist processing is the number of false twists performed in the normal stretch false twist processing, for example, 3300 to 3600 T for 75 denier.
/ M is suitable. As a bulking method other than the false twisting, it can be performed by performing air treatment. For example, a non-oriented or incompletely oriented yarn of a highly oriented fibrillated composite filament spun at a spinning speed of 2500 m / min or more before air treatment may be mixed with a polymer having a lower Tg temperature than a polymer having a higher Tg temperature and a polymer having a lower Tg temperature. Tg
The drawing process is performed once at a set temperature equal to or higher than the temperature, followed by a fluid turbulent flow treatment or an interlaced entanglement treatment, so that a so-called “taslan” yarn having a ring or slack or a bulky process called an entangled yarn can be performed. When performing fluid turbulence processing, the so-called “taslan”
Nozzle with a turbulent pressure of 3 to 8 which is usually used.
It is preferable to perform the treatment under the condition of kg / cm ² . As described above, such a composite fiber is subjected to bulk processing in the state of a filament yarn to form a bulk yarn, and if this is used for a woven fabric, it has a soft feel due to the myriad of coils and loops protruding from the woven fabric surface. It can be a spun-like high-density fabric, and the texture is rich in bulkiness, drapeability, tension and waistiness, softness, the fabric surface is spun touch, and fibrillated conjugate fiber is After fibrillation, the single fiber denier is generally 0.5 denier or less, so that a cotton-like feel is provided. Also,
As for the appearance, there is little luster that lacks the dignity of "tekari" and "wax" like a conventional filament-like,
It has a mild, deep and natural luster, which can give a high quality image.

Regarding the density of the woven fabric, it is naturally necessary to increase the warp and weft densities in order to obtain a high-density woven fabric. When filament yarns are used, shrinkage after fibrillation, shrinkage of the fabric, and the development of bulkiness can provide a higher-density woven fabric even if the woven density is not necessarily so high, so special weaving conditions need to be taken. It does not necessarily have the advantage that weaving design and weaving work are easy.

In the present invention, in order to better exhibit the shrinkage ability of the weft as described above, and to increase the degree of weft bending (bending of the weft) due to shrinkage of the fabric to increase the density, It is desirable that the woven fabric is constituted by a plain weave structure. That is, the high-density woven fabric for the bedding material of the present invention is a woven fabric using a combination of the weft and the warp as described above, but when the woven fabric shrinks in the weft direction,
The component having a small shrinkage ratio in the weft is extremely thin, such as a single fiber denier of 0.5 denier or less after fibrillation, and the warp has a higher density than the single fiber denier after the weft filament yarn is fibrillated. The use of a multifilament yarn having a large single fiber denier makes the weft bend due to the shrinkage of the fabric larger (the low-shrinkage component in the weft is thinner than the warp constituent filament, so the weft side is more bent) This tends to cause the weft filament to bend more than the warp, causing the fabric to shrink.)

[0029] Such shrinkage of the fabric achieves higher densification, and the woven fabric structure can effectively prevent cotton shedding as a bedding material such as a futon side, or a futon cover. As a bedding material such as, there is an effect that the invasion of pests such as mites can be satisfactorily shut out without special use of repellents such as dust and dust and repellents such as pests.

It is preferable that the denier of a single fiber of the constituent filaments of the warp is about several deniers in order to achieve the above-described weft bending effect well. In addition, the total denier of the weft is preferably equal to or larger than the total denier of the warp by about 2 to 3 times, and is preferably thicker than the warp in the sense of promoting the above-described effect.

Further, the high-density woven fabric for bedding material of the present invention comprises:
Use of a bulked weft gives a good spun-like texture.

Hereinafter, the specific structure and effect of the high-density woven fabric for bedding material of the present invention and the method for producing the same will be described based on examples.

Example 1 Nylon 70% (shrinkage due to rapid temperature increase 8%), Polyester 30% (shrinkage due to rapid temperature increase 60%)
A fibrillated composite filament yarn of 100 denier,
POY (3500) of 48 filaments (radial 6 divisions)
m / min) to produce a fibrillated conjugate fiber under the following conditions.

Processing speed 400 m / min Stretching ratio 1.9 times Number of false twists 3400 T / m Setting temperature 70 ° C. Incidentally, the elasticity of the obtained bulky yarn is 24.3%,
Shrinkage rate by rapid heat treatment in boiling water of 98 ° C is 51%
When the fibers were fibrillated in a yarn state, the polyamide fibers had a shape close to a triangular cross section.

The above-described bulky yarn after false twisting is directly used for the weft, and the warp is 70 denier, 3
When the plain fabric was subjected to a rapid heat treatment, the plain fabric was shrunk by 32% (shrinkage of the fabric) in the weft direction, and the surface of the plain fabric was crimped with a fibrillated polyamide fiber. And a spun-like hand with good and some stretch performance.

In this plain woven fabric, the low shrinkage component yarn (weft component composed of nylon filament) in the weft shows a larger bent state of the weft (a larger bent state of the weft than that of the warp), and the woven fabric has And a high-density woven fabric which has been shrunk.

When the bedding material such as the futon side and the futon cover was constructed using this woven fabric, it exhibited a good texture and a good effect of preventing dust, dust and pests from entering.

Example 2 The same POY as in Example 1 was subjected to a fluid turbulence treatment under the following conditions to produce a bulky composite filament yarn.

[0039] As in Example 1, weaving and fibrillation in boiling water were performed.

In this woven fabric, the shrinkage of the woven fabric was 30.4% in the transverse direction. The fabric cross section is mainly made of shrinked polyester filament fibers in the fabric inner layer,
On the outside, a polyamide filament fiber having a triangular cross section was mainly present, and both of these components were present in a fibrillated state. In such a woven fabric, the low shrinkage component of the weft (nylon filament weft) had a higher degree of bending (larger than the warp), and was a high-density woven fabric present in the woven fabric.

Thus, a good spun-like fiber in which the weft of the polyamide filament fiber is bent more than the warp component and the outermost surface of the woven fabric has a large number of rings and slacks composed of the weft component of the polyamide filament fiber. It showed the texture. Furthermore, when this woven fabric was used as a duvet cover, the woven fabric exhibited a good effect of preventing invasion of pests such as dust, dust and mites.

[0042]

The high-density woven fabric for bedding material according to the present invention is
It is woven with special weft and warp yarns. Due to its structural characteristics, it can have a so-called amenity effect (comfort effect) such as prevention of cotton shedding and intrusion of dust and mites. It is the most suitable fabric for futon side and futon cover.

When a polyamide is used as the low shrinkage component, the polyamide fiber becomes a sheath, and the weft of the polyamide filament fiber is present in the woven fabric in a state of having a higher degree of bending than the warp component. As a result, the touch is soft and moist, and the color development and friction are also excellent.

[Brief description of the drawings]

FIGS. 1 (a) to 1 (d) are model cross-sectional views showing four examples of structural aspects of a fibrillated conjugate fiber used for a high-density woven fabric for bedding material of the present invention.

2 (a) to 2 (d) are model cross-sectional views showing four examples of the fibril-formed structure of the fibrillated composite fiber used in the bedding material of the present invention in FIG. It is.

[Explanation of symbols]

 A: High shrinkage component B: Low shrinkage component

Claims (7)

[Claims] 1. A polyester component and a polyamide component having a ratio of 0.
The fibrillated composite fiber filament yarn having a bonding ratio of 0.05 to 0.95: 0.95 to 0.05 is divided into the respective components to form a weft filament fiber having a single fiber fineness of 0.5 denier or less. Constituting the weft containing, the warp is woven using a multifilament yarn having a single fiber denier larger than the single fiber denier after the fibrillated type composite fiber filament yarn is fibrillated, A high-density woven fabric for bedding materials, wherein a weft filament is bent to a larger extent to reduce the woven fabric density. 2. The high-density woven fabric for bedding material according to claim 1, wherein the woven fabric is a plain woven fabric. 3. The high-density woven fabric for bedding materials according to claim 1, wherein the warp has a total denier of the warp smaller than a total denier of the weft. 4. The high-density woven fabric for bedding material according to claim 1, wherein the weft filament yarn is a bulky processed yarn. 5. The polyester component and the polyamide component having a content of 0.1%.
A fibrillated composite fiber filament yarn joined at a bonding ratio of 0.05 to 0.95: 0.95 to 0.05 is used for the weft, and the fibrillated composite fiber is used for the warp after fibrillation. After weaving a woven fabric using a filament yarn having a single fiber denier larger than the single fiber denier, the fibrillated composite fiber filament weft is fibrillated, and the single fiber fineness is 0.5 denier or less in the weft. A high-density woven fabric for bedding materials characterized by producing a large number of weft filament fibers, bending the weft filaments larger, and causing a larger fabric shrinkage in the weft direction to obtain a densified fabric. Manufacturing method. 6. The method for producing a high-density woven fabric for bedding material according to claim 5, wherein the woven structure is a plain woven structure. 7. The method for producing a high-density woven fabric for bedding material according to claim 5, wherein a warp having a total denier of the warp smaller than a total denier of the weft is used.