JPWO2007086491A1 - Cellulose fiber mixed fabric - Google Patents

Abstract

The present invention provides a fabric that is comfortable when wearing clothes and does not feel sticky or damp when sweating. The present invention can be achieved by a cellulose fiber-mixed fabric characterized by containing cellulose fibers having a dimensional change rate of 2% or more at the time of water absorption. When the fabric of the present invention is applied to sportswear, inner, outer and the like, a comfortable wearing feeling can be obtained.

Description

  The present invention relates to a fabric in which fibers that change in size upon special water absorption are mixed. More specifically, the present invention provides a fabric that is comfortable when sweating and wearing, in which cellulosic fibers that undergo dimensional changes (water absorption self-extension or water absorption self-shrinkage) upon water absorption are mixed.

In conventional garments, when sweating due to exercise such as sports, the fabric absorbs sweat, the skin and the fabric are in close contact, and there is a so-called stickiness or stuffiness. In order to prevent this, various fabrics have been developed. However, there is a limit to the comfort at the time of sweat absorption with only the fabric structure. In order to eliminate the feeling of stickiness and stuffiness, fabrics and clothes using fibers that self-extend during sweat absorption (at the time of water absorption) have been proposed. For example, a garment that improves air permeability when absorbing water (see Patent Documents 1, 2, and 3) using a fiber that self-extends during water absorption (see Patent Documents 4 and 5). Proposed.
Certainly, the garments proposed in these patent documents are more comfortable when sweating than garments that do not use water-absorbing self-extending yarns. However, the fibers used in these clothes have almost no hygroscopicity or water absorption, and do not absorb moisture due to insensitive digestion of the body. For this reason, there is a feeling of discomfort even when worn in a non-sweat state, and furthermore, since it does not absorb sweat even when sweating, it becomes a garment with a feeling of stickiness and stuffiness. Further, it is known that if ordinary cellulose fibers are used, the hygroscopicity is good and the clothes are comfortable when worn. However, since a feeling of stickiness or stuffiness is felt when sweating due to exercise or the like, a highly functional fabric is desired, such as improved air permeability when absorbing water. As mentioned above, there are currently no fibers that are comfortable when worn and when sweating.
JP 2005-163225 A JP 2005-36374 A JP 2005-23431 A JP 2005-146696 A JP 2006-112009 A

  An object of the present invention is to provide a fabric that is comfortable when worn and does not feel sticky or damp even when sweating.

  As a result of intensive studies including a wearing test in order to achieve the object, the present inventor has found that the problem is achieved by a fabric using an innovative cellulose fiber that causes a dimensional change upon water absorption.

That is, the object of the present invention is achieved by the following cellulose fiber mixed fabric.
(1) A cellulose fiber-mixed fabric comprising cellulose fibers having a dimensional change rate of 2% or more upon water absorption.
(2) The cellulose fiber-mixed fabric according to (1), wherein water-absorbing self-extending cellulose fibers having a water absorption elongation rate of + 3% or more are contained.
(3) The cellulose fiber-mixed fabric according to (2), wherein the cellulose fiber content is 10 wt% or more.
(4) A circular knitted structure having a welt loop made of water-absorbing self-extending cellulose fibers having a water absorption elongation rate of + 3% or more and / or a portion in which a tuck loop is continuously formed by two or more loops. Cellulose fiber mixed fabric.
(5) The water-absorbing self-extending cellulose fiber having a water absorption elongation rate of + 3% or more is looped, and has a 1-4 needle swinging structure, and further has a knitted fabric density reduction rate of 5 to 40% at the time of water absorption. (6) The water-absorbing self-stretching cellulose fiber is immersed in an alkaline aqueous solution of 20 g / L or more, 20 ° C. or more, and 5 minutes or more. The fabric for mixing cellulose fibers according to (4) or (5).
(7) The cellulose fiber-mixed fabric according to (1), wherein water-absorbing self-shrinking cellulose fibers having a water absorption elongation rate of -2% or less are contained.
(8) A water-absorbing self-shrinking cellulose fiber having a multilayer structure fabric in which a separation part and a non-separation part are repeatedly formed, wherein one outer layer and / or intermediate layer has a water absorption elongation of -2% or less. The cellulose fiber-mixed fabric according to (7), wherein the other outer layer is composed of non-water-absorbing shrinkable fibers, and the non-separating portion in the course direction is composed of non-shrinkable fibers.
(9) A three-dimensionally structured fabric in which a separation part and a non-separation part are repeatedly formed, and one outer layer (C) constituting the separation part has a water absorption self-shrinkage with a water absorption elongation rate of -2% or less. Cellulose fibers are contained, the other outer layer (D) contains non-water-absorbing shrink fibers, and the number of courses of both outer layers is (C)> (D). Fabric.
(10) The cellulose fiber-mixed fabric according to (7), wherein the water-absorbing self-shrinkable cellulose fiber has a twist coefficient of 8200 to 35000.

  By using the fiber of the present invention, it is possible to produce a fabric that is comfortable when worn and does not feel sticky or damp when sweating. In particular, this fabric can exhibit a significant moisture absorption / release effect during exercise, resulting in a large difference in clothes and wearing comfort as disclosed in Patent Documents 1-5. In addition, the size of the cellulose fibers changes during water absorption (when sweating in clothes), and in particular, the moisture absorption and release can be improved. However, the effect of changing the water absorption dimension of cellulose fibers can be obtained. For this reason, if the fiber of the present invention is used, it is possible to produce a garment that is comfortable when worn and does not feel sticky or stuffy when sweating. When the fabric manufactured using the fiber of the present invention is applied to sportswear, inner, outer and the like, a comfortable wearing feeling can be obtained.

The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention The figure which shows the example of the knitting structure in the cellulose mixed fabric of this invention

Explanation of symbols

[1] to [8] Knitting order [R] Non-separation structure provided partially 11 Dial needle 12 Cylinder needle
13 Normal fiber 14 Cellulose fiber having a dimensional change rate of 2% or more upon water absorption 21 Separation part 22 Non-separation part A One outer layer constituting the separation part B Other outer layer constituting the separation part C One part constituting the separation part Outer layer D The other outer layer constituting the separation part K Knit loop T Tack loop W Welt loop

Hereinafter, the present invention will be described in detail.
The cellulose fiber in the present invention includes cupra, rayon, purified cellulose fiber, bamboo fiber, cotton and the like, and regenerated cellulose such as cupra and rayon is preferably used. In order to obtain a knitted fabric, these long fibers and short fibers (spun yarn) are used. For long fibers, 11 dt (decitex: the same symbol is used hereinafter) to 400 dt, and for short fibers, 160 S (cotton count: hereinafter the same symbol) to 10 S are used. Further, it can be constituted by twisting a long fiber and a short fiber, a triple yarn, or a combination of a long fiber and a short fiber, and each can be used as a thickness suitable for the structure. For long fibers, 40 dt to 170 dt is preferable, and for short fibers, about 30 S to 120 S is easy to handle and is preferable.

The fabric of the present invention is a fabric in which cellulose fibers having a dimensional change rate of 2% or more upon water absorption are mixed. There are two types of cellulose fibers having a dimensional change rate of 2% or more at the time of water absorption: water-absorbing self-extending cellulose fibers and water-absorbing self-shrinking cellulose fibers. The inventors of the present invention have found a method for suitably obtaining water-absorbing self-extending cellulose fibers and water-absorbing self-shrinking cellulose fibers, and studied fabric configurations for maximizing the respective performances, and have reached the present invention.
The water-absorbing self-extending cellulose fiber is a cellulose fiber having a water absorption elongation rate of + 2% or more, and preferably a water absorption elongation rate of + 3% or more.
The water-absorbing self-shrinking cellulose fiber refers to a cellulose fiber having a water absorption elongation rate of −2% or less.

In the present invention, fibers having a dimensional change rate of less than 2% during water absorption are referred to as ordinary fibers. Examples of ordinary fibers include polyester fibers such as polyester and polytrimethylene terephthalate, polyamide fibers, polyurethane fibers, cellulose fibers that are not given water absorption dimensional change performance due to alkali treatment or twisted yarn described later, acetate, wool, etc. The long fiber of arbitrary fibers, or a short fiber is mentioned. These cross-sectional shapes are arbitrary, and may be an irregular yarn such as a round cross-section or a W-shaped cross-section.
In the present invention, the dimensional change rate during water absorption is determined by the following method. The fiber length (A) is measured under a load of 0.05 g / dt (decitex) in an environment of 20 ° C. and 65% RH, and then the fiber is immersed in water for 30 seconds. Next, the fiber is taken out from the water, and the fiber length (B) after 30 seconds is measured under a load of 0.05 g / dt. A water absorption elongation rate is calculated | required by following formula (1). And as the following formula (2), let the absolute value of the obtained water absorption elongation rate be a dimensional change rate at the time of water absorption.

In addition, the dimensional change rate measurement at the time of water absorption of the fiber in the fabric is performed under the same conditions by extracting the fiber from the fabric. At this time, the fiber length to be measured is 30 cm, but when 30 cm fiber cannot be extracted from the fabric, the length is measured. In this case, in order to obtain an accurate value, the number of measurement samples is appropriately increased for measurement. Furthermore, even in the case of a composite yarn obtained by compounding a plurality of fibers having different dimensional change rates at the time of water absorption by interlacing fluid blending processing or twisted yarn, or mixed yarn or twisted yarn, the fiber is extracted from the fabric, and the composite yarn or blended yarn is extracted. Measure the rate of dimensional change at the time of water absorption under the same conditions in the state of yarn and twisted yarn.
Water absorption elongation (%) = ((B−A) / A) × 100 (1)
Dimensional change rate during water absorption (%) = Absolute value of water absorption elongation (2)
Hereinafter, the structure of the water-absorbing self-extending cellulose fiber and the fabric of the present invention using the fiber will be described.

The water-absorbing self-extending cellulose fiber of the present invention has a water absorption elongation rate of + 2% or more, preferably + 3% or more. In order to use cellulose fibers as water-absorbing self-extending yarns, ordinary cellulose fibers may be treated in an alkaline aqueous solution. It has been conventionally known that a cellulose fiber is alkali-treated. For example, mercerization is the most common treatment method. However, in the present invention, the conventional common sense has been broken, and by carrying out a harsh alkali treatment, cellulose fibers have been successfully produced that extend by 2% or more, preferably 3% or more upon water absorption.
Specifically, it is obtained by immersing the cellulose fiber in an aqueous solution containing, for example, 20 g / L (liter) or more of sodium hydroxide at 20 ° C. or more for 5 minutes or more. The water absorption elongation rate can be controlled by controlling these conditions. For example, the milder the treatment conditions such as alkali concentration, temperature, time, etc., the smaller the water absorption elongation rate. However, even if the treatment conditions are too strict, it is possible to obtain a cellulose fiber having a water absorption elongation rate of 20% or more. Have difficulty. Known alkali treatment agents can be used. For example, alkali metal hydroxides such as sodium hydroxide and potassium hydroxide can be used.

  The alkali concentration is more preferably 20 to 200 g / L aqueous solution. The treatment temperature and time are each 20 to 110 ° C., and it is more preferred to treat for 5 to 120 minutes. This processing temperature is the highest temperature during processing, and the processing time is the total time including the time from reaching the maximum temperature after cooling to 20 ° C. after the alkali is added and cooling to below 20 ° C. after the processing at the maximum temperature. Thus, it is sufficient that these times are 5 minutes or more. In addition, it is desirable to immediately wash and neutralize the cooling water after draining it. The alkali treatment method may be performed in the state of cellulose fibers and dyeing after knitting, or the method of performing alkali treatment after fabric production using cellulose fibers before alkali treatment, and subsequent dyeing processing is arbitrary. However, the method performed after the manufacture of the fabric is easy.

In addition, water-absorbing self-extending cellulose fibers can be obtained even by immersing in a strong acid solution such as acetic acid or malic acid, but the effect of forming water-absorbing self-extending cellulose fibers is slightly smaller than the alkali treatment under the above conditions.
In the cellulose fiber-mixed fabric of the present invention, the use of cellulose fibers particularly excellent in moisture absorption / release contributes greatly to wearing comfort, and the fabrics as shown in Patent Documents 1 to 5 proposed so far And a great difference in wearing comfort. That is, by using the cellulose fibers that are self-extending water absorption, which is a major feature of the cellulose fiber-mixed fabric of the present invention, the cellulose fibers are elongated at the time of water absorption (at the time of sweat absorption in the clothes wearing scene), and the moisture release property can be improved. It is possible and the effect of using cellulose fibers can be further enhanced.

  As for the method of mixing the water-absorbing self-extending cellulose fiber and the ordinary fiber, a method of knitting or interweaving the ordinary fiber and the water-absorbing self-extending cellulose fiber by aligning them on a knitting machine or a loom, or water absorbing self Mixing is possible by producing a fabric using stretched cellulose fibers and ordinary fibers as composite yarns such as cross twist, composite false twist, and interlace. In the case of a composite yarn, depending on the composite method, the composite yarn may not be remarkably elongated upon water absorption. In order to avoid this, the feed rate (feed rate) is designed so that the water-absorbing self-extending cellulose fiber is 0 to 9% shorter than the water-absorbing self-extending cellulose fiber in the yarn length difference from the normal fiber. To do. When the yarn length difference is larger than 9%, the composite yarn has insufficient strength, and sufficient fabric strength cannot be obtained. In addition, when the water-absorbing self-extending cellulose fiber is longer, the fiber is apparently thick, the moisture absorption / release property is lowered, and the object of the present invention may not be achieved.

Furthermore, the mixing ratio of the cellulose fiber that absorbs water in the composite yarn can be arbitrarily set in consideration of the effect obtained by the fabric design. It is desirable that the cellulose fiber that absorbs water absorbs itself at a mixing ratio of 20 to 80%.
When fabrics such as knitted fabrics and woven fabrics are produced using the water-absorbing self-extending cellulose fibers of the present invention, various functions that are comfortable when sweating can be imparted by knitted fabric designs and fabric designs. For example, a double circular knitting machine is used as an example of a structure in which cellulosic fibers that absorb water during sweating stretch and fibers on the surface that make up the fabric come out on the fabric surface to form convex portions. The separation part in which one outer layer containing water-absorbing self-extending cellulose fibers and the other outer layer containing ordinary fibers are partially separated and the non-separation part are repeated regularly or irregularly. With this structure, the water-absorbing self-extending cellulose fiber is stretched during sweat absorption, and unevenness appears on the knitted fabric, so that the feeling of stickiness can be suppressed.

  Also, if the water-absorbing self-extending cellulose fiber absorbs sweat, the stitches and weaving yarns that make up the fabric grow and become large, and the density of the sweat-absorbing part decreases, it is possible to produce clothes that do not feel stuffy when sweating during exercise. It becomes possible. When manufacturing a garment that does not feel stuffy, a knitted fabric is more effective than a woven fabric. For example, in a milling structure, the structure of non-water-absorbing stretch fibers and cellulosic fibers can be manufactured by a design such as alternately arranging one or three water-absorbing self-stretch cellulose fibers in three. As described above, in the present invention, by effectively designing the water-absorbing self-extending cellulose fiber with a single circular knitting machine, a double circular knitting machine, a single warp knitting machine, a double warp knitting machine, a loom, etc., sweating such as exercise It is sometimes possible to absorb sweat and form irregularities in the fabric, or to reduce the density of the stitches and weaving yarns constituting the fabric of the water absorbing portion. In addition, in the case of warp knitting, a long sinker loop is formed, such as cord (2 stitch swing) from Denby (1 stitch swing) and satin (3 stitch swing) than the cord, and water absorbing self-extending cellulose is formed in this portion. The effects of the present invention can be suitably achieved by selecting a warp knitting structure in which fibers are arranged and using these as one ridge.

  Furthermore, in the case of manufacturing with a woven fabric, a warp yarn such as twill and satin, or a structure in which the float of the weft yarn is long, or a surface layer and a back layer are woven as a double weave, and several tens in the warp direction and the weft direction. A connecting portion may be provided for each book, and the water-absorbing self-extending cellulose fibers may be designed to form irregularities on the fabric by stretching at the time of sweat absorption, or to reduce the density of the sweat-absorbing portion. In these fabrics, the water-absorbing self-extending cellulose fibers do not necessarily have to be exposed on the surface. For example, the water-absorbing self-extending cellulose fibers are arranged in the intermediate layer as a three-layer structure so It is also possible to design so that the fibers extend and extrude ordinary fibers in the outer layer to reduce the unevenness and density of the fabric.

  As described above, if water-absorbing self-extending cellulose fibers are used, a comfortable garment can be produced particularly during sweating such as exercise. However, with cellulose fibers having a water absorption elongation rate of less than + 2%, the change in the fabric structure is small, and it is impossible to produce clothes that are comfortable even during sweating such as exercise.

The cellulose fiber-mixed fabric according to the present invention preferably contains 10% or more of water-absorbing self-extending cellulose fibers having a water absorption elongation rate of + 2% or more, preferably + 3% or more. When the mixing ratio of the water-absorbing self-extending cellulose fibers is less than 10%, even if the cellulose fibers are elongated at the time of water absorption, the effect of suppressing the stuffiness is not exhibited effectively. A more preferable mixing ratio is 15 to 100%, and a knitted fabric with 100% water-absorbing self-extending cellulose fibers can exhibit the effect of the present invention most.
However, if mixed with ordinary fibers such as cotton, acrylic, polyester, nylon, etc., concerns about texture, strength, etc. are eliminated, and it can be applied to various clothing.

  Further, the mixing method of the water-absorbing self-extending cellulose fiber and the ordinary fiber is arbitrary, but the effect can be exerted when the cellulose fiber is arranged so as to be constituted alone in the course direction or the wale direction. For example, in the case of a knit smooth structure, water-absorbing self-extending cellulose fibers are used continuously for 2 courses, all the loops in the course direction are water-absorbing self-extending cellulose fibers, and adjacent courses are using ordinary fibers such as cotton and acrylic. The effect of this invention can be exhibited more. The effect of the present invention can be achieved by arbitrarily arranging the water-absorbing self-extending cellulose fibers so as to have a mixing ratio of 10% or more in the case of a structure in which one course uses one type of fiber in a course like a milling structure. Can demonstrate.

The cellulose fiber-mixed fabric of the present invention is particularly high in a knitted fabric if the welt loop and / or tack loop formed by water-absorbing self-extending cellulose fibers has at least two loops formed continuously. An effect can be obtained. That is, at least two loops of the welt loops and / or tack loops of the cellulose fibers continue in the course direction (knitting fabric warp direction), the wale direction (knitting fabric weft direction), or the diagonal direction on one needle bed. It is better to have a part that is formed.
Here, the tack loop and the welt loop are loops included in the knit loop, the tack loop, and the welt loop, which are the three elements of the loop constituting the knitted fabric. A tack loop refers to a tissue that supplies a needle with a thread but does not knock over. A welt loop refers to a tissue that does not supply a thread to a needle. The tuck loop and the welt loop exist in the knitted fabric substantially linearly or slightly bent. Compared to a loop structure that curves greatly like a knit loop and has a large bending point at the bottom of the knit loop, when the water-absorbing self-extending cellulose fiber absorbs and expands, it has a loop structure that is easy to extend because it has little bending and no bending point. It has become.

  Therefore, these tuck loops or welt loops constitute the knitted fabric structure, so that the knitted fabric density or the filling rate is reduced at the time of water absorption, and a knitted fabric having no stuffiness can be obtained. In particular, when the welt loop and / or tack loop has a portion formed continuously in at least two loops in one course bed in the course direction, the wale direction, or the diagonal direction, The effect of reducing the feeling of stuffiness is further increased. In the case of a double circular knitting machine, it has two needle beds, dial and cylinder, but only one needle bed structure on the dial side or only on the cylinder side is in the course direction, the wale direction, or the diagonal direction. It suffices to design such that at least two loops are continuously formed, and only one needle bed needs to be considered. In the case of a single circular knitting machine, since there is only a cylinder, there is no need to consider the structure design as in the case of a double circular knitting machine. Welt loops and / or tack loops with water-absorbing self-extending cellulose fibers are at least two loops continuous. It suffices to have a portion that is formed.

  The combination of the tack loop and the welt loop may be arbitrary, and may be a continuous tuck loop, a continuous welt loop, or a continuous loop in which a tuck loop and a welt loop are combined. For example, welt loops and tack loops in the course direction, welt loops and welt loops continue for 2 wales in the wale direction, and welt loops are created in 2 wales in the wal direction and 2 wales in the course direction. Any method can be performed such as continuing. In addition, in the case of a so-called tengu structure in which the length knit loop in the wale direction is continuous, the tengu portion is divided into two yarns and knitted in two courses to complete one course. As a result, two loops are continuously formed in an oblique direction, and the effects of the invention can be exhibited.

These are illustrated in FIGS. 1 to 6. In FIGS. 1 to 6, [1], [2], and [3] represent the knitting order and the course direction, and the fabric is knitted by actually repeating this knitting order. . The latitude column represents the wale direction. Although only 4 wales are shown in the figure, this is actually a repetition of this organization. K represents a knit structure, T represents a tack structure, and W represents a welt structure.
1 and 2 are examples in which a welt loop or a tuck loop is knitted continuously for two courses, FIGS. 3, 4 and 5 are examples in which a welt loop or a tuck loop continues in an oblique direction, and FIG. 6 is a welt loop and a tuck loop. An example of the combination of Note that if the tack loop or the welt loop is not continuous, the effect of the present invention is reduced.

When the cellulose-mixed fabric of the present invention is a warp knitted fabric, it may be difficult to take advantage of the characteristics of water-absorbing self-extending fibers depending on the structure. As a result of intensive studies to prevent this phenomenon, the present inventors have found that a comfortable warp knitted fabric can be produced by a warp knitted fabric design method. That is, in the knitted fabric containing the cellulose fiber which absorbs water and self-extends, the cellulose fiber is looped and has a swing structure of 1 to 4 needles, so that the object of the present invention can be achieved.
The looping here is a structure in which a needle loop (knitted loop) is formed. An insertion tissue that does not form a needle loop is not preferable because the deformation at the time of wearing the knitted fabric does not return, and a so-called wari phenomenon occurs. Further, in the case of a structure in which looping and insertion are repeated, if the insertion is not continuous for only one course, it is regarded as a looping structure in the present invention, and the Wallai phenomenon does not occur. However, when the insertion continues for two or more courses, cracking is likely to occur, which is not preferable. Further, when the knitting is not performed in the same wale as seen in chain knitting such as 10/01 without using the swing structure, the effect of the invention cannot be obtained. In the case of such a chain knitting, a swing structure is inserted once every two courses as in 10/01/12/21, and the chain knitting is designed not to be continuous for two or more courses. Of course, the loop of the second part is also looping.

  Furthermore, the swinging of the warp knitted structure by the water-absorbing self-extending cellulose fibers needs to be 1 to 4 needles. As the number of swings increases, the moisture-releasing effect due to the water absorption elongation of the cellulose fibers is more likely to occur. However, when the swing exceeds 5 stitches, the packing density of the cellulose fibers in the warp knitted fabric becomes too high, and the moisture-releasing effect at the time of water absorption is reversed. A phenomenon of decreasing occurs. Therefore, it is necessary to design warp knitting so that the water-absorbing stretched cellulose fiber has 1 to 4 needles. As an example of warp knitting design, the back structure is 10/12, 10/23, 10/34, a cellulose fiber that self-extends water absorption on the back, and a normal fiber on the front, in a tricot of 2 sheets. 10/45 etc., 10/12/10/34/32/34 etc. The method of changing the course but changing the whole course, or 12/00, 12/10/22/10 / As in 1/00, etc., it is possible to make a structure such as a method of repeating insertion and discontinuation of looping and insertion.

In the case of a warp knitted fabric containing water-absorbing self-extending cellulose fibers in the present invention, the cellulose fibers are extracted from the warp knitted fabric, and the water absorption elongation rate (dimensional change rate during water absorption) of the cellulose fibers is measured. In many cases, it is difficult to make a structure other than a half, such as a half, that can extract the fibers of the back 10/12 structure. For this reason, the present inventor has found that the comfort of the wearing place can be obtained by making the knitted fabric density reduction rate within a predetermined value as a result of examining a scale that replaces the water absorption self-elongation rate.
In particular, there is a correlation between the knitted fabric density reduction rate under a small amount of moisture and the wearing comfort, and when a moisture content of 50% of the knitted fabric weight is given to the knitted fabric, the knitted fabric density reduction rate is 5 to 40%. As a result, it was found that air easily moves into and out of the clothes, and further, the moisture absorption and release properties of the cellulose fibers are sufficiently exhibited by the movement of the air, and the inside of the clothes does not become high humidity. The knitted fabric density decreasing rate at the time of water absorption of the warp knitted fabric of the present invention is 5 to 40%, preferably 10 to 30%. When the knitted fabric density reduction rate is less than 5%, it becomes uncomfortable because a feeling of stuffiness is felt during sweating. When the knitted fabric density reduction rate is greater than 40%, the shape of the clothes is greatly changed and the feeling of wearing is impaired, and the appearance is also deteriorated.

  The warp knitted fabric which is the cellulose mixed fabric of the present invention preferably contains 10% or more of water-absorbing self-extending cellulose fibers. About the method of mixing the water-absorbing self-extending cellulose fiber and the ordinary fiber, the method of warping and knitting the ordinary fiber and the water-absorbing self-extending cellulose fiber into separate beams, or the water-absorbing self-extending cellulose fiber and the ordinary fiber There is a method of warping the composite yarn into a beam as a composite yarn such as cross twist, composite false twist, and interlace. Furthermore, the warp knitted fabric can be manufactured by using a warp knitting machine such as a single or double tricot machine or a Russell machine. The structure can be made of an arbitrary structure such as a denby, half, satin, mesh, or three-dimensional knitted fabric having a connecting yarn inside the warp knitted fabric, which is manufactured by one or more sheets.

  A normal dyeing finishing process can be used for the dyeing method of the cloth containing the water-absorbing self-stretching cellulose fiber of the present invention. The dyeing machine used is cheese dyeing machine or cocoon dyeing machine when cellulose fiber is alkali-treated in the fiber state, and any dyeing machine such as liquid dyeing machine or wins dyeing machine is used for processing with alkali treatment as fabric. can do. Moreover, it is also possible to use a continuous alkaline processing machine such as a mercerizing machine that can process the fabric continuously instead of in a batch. In this case, the processing conditions may be set to the conditions of the present invention. The fabric after the alkali treatment is preferably dyed under a dyeing condition corresponding to the fiber material. In addition, for processing in the knitted fabric state, the raw machine is pre-set at 150 to 190 ° C. with a pin tenter, etc., and then the process of refining, alkali treatment, dyeing and finishing set, and the raw machine is refined at 150 to 190 ° C. It can be carried out in an arbitrary process such as a process of dyeing and performing a finishing set after pre-setting with a pin tenter or the like. The finishing set is performed at 150 to 190 ° C. At this time, it is sufficient to finish so that the cellulose fibers that absorb and elongate after finishing are not wrinkled or stretched. Further, a method of setting the finishing density by drying the fabric before finishing setting is preferable. Further, it is possible to apply a softening agent or a water absorbing agent as a finishing agent, and the application of the water absorbing agent is preferable because it improves sweat absorption. In addition, fiber resin addition, such as a water absorbing agent, can also be provided during dyeing.

Hereinafter, the structure of the water-absorbing self-shrinking cellulose fiber and the fabric of the present invention using the fiber will be described.
The water-absorbing self-shrinking cellulose fiber according to the present invention has a water absorption elongation of −2% or less. In order to make the cellulose fiber have a water absorption elongation rate of -2% or less, it is obtained by setting the twist coefficient to 8200-35000.
As a result of intensive studies including a wearing test on the fabric structure for achieving the object of the present invention using the cellulose fiber, the fabric was made into a 2-3 knitted circular knitted fabric, If one outer layer or intermediate layer uses a fiber that absorbs and contracts when sweating due to exercise, etc., and the other outer layer uses a fiber that has low shrinkage when absorbing sweat, the outer layer is flat when dried but one layer when absorbing sweat Since the other fibers are contracted and the other outer layer is a fiber with small shrinkage, it protrudes to form a convex part and returns to a flat state when dried after sweat absorption. It was concluded that if clothes were sewn as a side, it would be comfortable even when sweating. As a result of various studies to achieve this function, it was found that this function can be achieved by specifying the knitted fabric structure and material.

That is, in order to express the effect of the present invention, in the two-layer circular knitted fabric in which the separation part and the non-separation part are repeatedly formed, one outer layer contains water-absorbing self-shrinking cellulose fibers, and the other outer layer is non-water-absorbing. A two-layer circular knitted fabric composed of shrink fibers and the non-separation part in the course direction is preferably composed of non-water-absorbing shrink fibers. Here, the non-water-absorbing shrinkable fiber is a fiber having a water absorption elongation rate of greater than −2%, and examples thereof include the above-described normal fibers and water-absorbing self-extending fibers. Sectional views of such a circular knitted fabric are shown in FIGS.
FIG. 7 is a schematic cross-sectional view of the circular knitted fabric at the time of drying and FIG. 8 at the time of sweat absorption. In the circular knitted fabric, a separation part 21 and a non-separation part 22 are repeatedly formed, one outer layer (A) contains water-absorbing self-shrinking cellulose fibers, and the other outer layer (B) is composed of non-water-absorbing shrink fibers. Yes. When dried (FIG. 7), the surface of the fabric is flat, but when absorbing sweat (FIG. 8), the water-absorbing self-shrinking cellulose fibers constituting (A) shrink and constitute the other outer layer (B) in the separation part 21. The protruding fibers are raised to form the convex portion.

The separation part and the non-separation part may be repeated regularly or irregularly, and various structures and structures that can be manufactured by a circular knitting machine can be selected. In the circular knitted fabric of this structure, the range of the course ratio (A) / (B) of both outer layers is not particularly limited, unlike a three-dimensional structured knitted fabric having a different structure described later, but the fabric surface is flattened during drying. In order to maintain, it is preferable that (A) / (B) = 1.
Furthermore, as the three-layer circular knitted fabric that can exhibit the effects of the present invention, in the three-layer circular knitted fabric in which the separation portion and the non-separation portion are repeatedly formed, one outer layer and / or intermediate layer absorbs water. A three-layer circular knitted fabric containing shrink cellulose fibers, the other outer layer being composed of non-water-absorbing shrink fibers, and the non-separating portion in the course direction being composed of non-water-absorbing shrink fibers is preferable.

As for the shape of the separation part that is partially separated in the multilayer circular knitted fabric of 2 to 3 layers according to the present invention, a dot shape having an area such as a round shape, an elliptical shape, a rectangular shape, a rhombus shape, a star shape, etc. Arbitrarily, the arrangement is also arbitrary, such as a checkered pattern, a rising shoulder, an irregular shape. As for the size of the separation portion, the fabric unevenness effect at the time of sweating is reduced if it is too small or too large. In the case of a dot shape having an area such as a round shape or a square shape, the major axis and the minor axis are both preferably 2 to 15 mm, particularly preferably 3 to 12 mm. In the case of a continuous shape having a certain width, the width is preferably 2 to 15 mm, particularly preferably 3 to 12 mm.
Even if the total area of the separation part where the convex part is formed during sweat absorption is too small or too large, there is a feeling of stickiness when sweating. For this reason, it is preferable that the total area obtained by adding the areas of the individual protrusions on the side where the protrusions are formed during sweat absorption is 20 to 90% of the fabric surface during drying. More preferably 30 to 80%, particularly preferably 35 to 75%, a comfortable garment having no stickiness when sweating is obtained.

The separation part in the 2-3 layer circular knitted fabric of the present invention has an arbitrary shape as described above. The non-separation part needs to be formed so as to surround the separation part, and the separation part and the non-separation part need to be repeatedly formed.
FIG. 9 shows a configuration example of the separation part and the non-separation part of the circular knitted fabric. The non-separation part in the wale direction (circular knitted fabric warp direction) need not be linearly continuous, but the non-separation part in the course direction (circular knitted fabric weft direction) is linearly continuous and is made of non-shrinkable fibers. Design as configured. That is, the non-separating part in the wale direction may contain water-absorbing self-shrinking cellulose fibers, but the non-separating part in the course direction is composed of only non-water-absorbing shrink fibers. The width of the non-separating part in the wale direction is not particularly limited. About the width | variety of the non-separation part of a course direction, 1-15 mm is preferable since the stickiness reduction effect at the time of sweating will become small if it is too narrow or too wide. More preferably, if the thickness is 2 to 12 mm, particularly preferably 3 to 10 mm, the object of the present invention can be sufficiently achieved, the stickiness at the time of sweat absorption is suppressed, and furthermore, the high-cost twist coefficient is 8200 to 35000. It is possible to reduce the fiber mixing ratio and to reduce the cost of the circular knitted fabric. In addition, the width | variety of the non-separation part which measures the width | variety of the non-separation part minimum in a course direction is measured.

  As an example of a specific method for producing a two-layer circular knitted fabric according to the present invention, when a double circular knitting machine is used, one outer layer has a knitted sheet and the other outer layer has two layers of front and back connecting portions every several wales. There is a method of knitting with a knitted sheet, and a knit or tuck structure at the connecting portion. At the time of knitting, one outer layer has a structure containing water-absorbing self-shrinking cellulose fibers. In order to provide a non-separation part that partially connects the outer layers in these structures, non-water-absorbing shrinkage fibers are used every few courses, and in the case of a double circular knitting machine, both the dial and cylinder are knit and connected. It is necessary to use a non-separating part. Thereby, the separation part and the non-separation part are repeatedly formed in the course direction and the wale direction, and it becomes possible to form a dot-like convex part having an area such as a round shape or a square shape during sweat absorption.

  As an example of a specific method for producing a three-layer circular knitted fabric according to the present invention, when a double circular knitting machine is used, the top layer and the back layer are knitted in a tense, the intermediate layer is a welt, and three layers are knitted every several wales. One of the fibers, or all the yarns are dialed, knit or tucked together on the cylinder, or the outer layer and the intermediate layer are integrated by plating the outer layer of the outer layer and the other layer is integrated. There is a method in which the outer layer is made of woven fabric and knit or tucked together with arbitrary fibers constituting them. There is also a method in which the intermediate layer is plated with a welt and water-absorbing self-shrinking cellulose fibers are disposed on one outer layer and the intermediate layer. In the case of these circular knittings, if several courses, dials, and cylinders are knit and connected together with non-water-absorbing shrinkage fibers every few courses, non-separation parts are formed in the course direction and the wale direction, and round and square shapes are formed during sweat absorption. It is possible to form a dot-like convex portion having an area such as.

The water-absorbing self-shrinking cellulose fiber according to the present invention is twisted so as to have a twist coefficient of 8200 to 35000. When the cellulose fiber is twisted with a twist coefficient of 8200 to 35000, the function of contracting during sweat absorption can be exhibited. If the twisting coefficient is less than 8200, the intended function of the present invention cannot be exhibited, which is not preferable. When the twist coefficient is larger than 35000, it is not preferable because it becomes difficult to produce a circular knitted fabric and the cost becomes high. Therefore, the twist coefficient may be set to 8200 to 35000, preferably 11000 to 30000.
In the present invention, the water-absorbing self-shrinking cellulose fibers are preferably mixed and used in an amount of 5% by weight or more of the entire multilayer circular knitted fabric. If it is less than 5% by weight, the formation of the convex portion of the circular knitted fabric is slight at the time of sweat absorption according to the present invention, and the object is hardly achieved, which is not preferable. A blending ratio of more than 50% by weight is also not preferable because shrinkage during sweat absorption of the entire circular knitted fabric becomes large and the clothes size changes. The mixing method of the water-absorbing self-shrinking cellulose fibers is arbitrary, and a method of arranging fibers, a method of forming a twisted yarn with ordinary fibers, and the like can be performed.

The total area of the protrusions that are formed when sweating is too small or too much, and there is a feeling of stickiness when sweating, so the total area of the individual protrusions on the side where the protrusions are formed when sweating is added. The area is preferably 20 to 90% of the fabric surface during drying. More preferably 30 to 80%, particularly preferably 35 to 75%, a comfortable garment having no stickiness when sweating is obtained.
The knitted fabric density of the 2-layer multi-layer circular knitted fabric in the present invention can be arbitrarily set.
The method for dyeing and finishing the two- or three-layer circular knitted fabric of the present invention can use a normal dyeing finishing process, and the dyeing conditions according to the fiber material to be used are also used. Etc. are arbitrary. In addition, it is preferable to add a water-absorbing agent in order to improve water absorption. As an example of the dyeing finishing process, the raw machine is put into a dyeing machine, and after scouring and dyeing, it also serves as a finishing process such as a water absorption process. It can be performed in any dyeing finishing process, such as a method of performing a finishing set, or a method of performing a final set that also serves as a finishing process by performing wet relaxation processing, dyeing after pre-setting, and finishing processing.

In addition to the above-described embodiments, other preferred embodiments using a water-absorbing self-shrinking cellulose fiber to form a three-dimensional fabric having an air layer between both outer layers by partially separating the fabric are shown in FIGS.
FIG. 10 is a schematic cross-sectional view of the three-dimensional structure knitted fabric at the time of drying and FIG. 11 at the time of sweat absorption. In the knitted fabric, a separation part 21 and a non-separation part 22 are repeatedly formed, one outer layer (C) contains water-absorbing self-shrinking cellulose fibers, and the other outer layer (D) is composed of non-water-absorbing shrink fibers. . What is different from the above-described configuration is that the fabric surface has a convex portion during drying (FIG. 10). This is obtained by knitting so that the number of courses of both outer layers is (C)> (D). When the surface of the fabric has a convex portion at the time of drying, the thickness of the fabric is increased and the air layer is warm so that the water-absorbing self-shrinking cellulose fiber constituting (C) contracts during sweat absorption (FIG. 11), Since the convex part in the separation part 21 is reduced and the thickness of the fabric and the air layer are reduced, the heat dissipation is increased. If it dries after sweat absorption, the convex part is restored again and returns to its original thickness.

That is, it is warm when not sweating, and heat dissipation proceeds when sweating, and since excess sweat is not sweated, a comfortable fabric is obtained in which the exercise function is not easily lowered.
Specifically, in the three-dimensional structure fabric in which the separation part and the non-separation part are repeatedly formed, one outer layer (C) constituting the separation part contains water-absorbing self-shrinking cellulose fibers and the other outer layer (D) The object of the present invention can be achieved by a three-dimensionally structured circular knitted fabric characterized in that contains non-water-absorbing shrinkable fibers and the number of courses of both outer layers is (C)> (D). Furthermore, the three-dimensionally structured fabric of the present invention has a structure in which one outer layer (C) that apparently constitutes the separation portion is raised to form a convex portion, and the separation portion and both outer layers are connected to each other. The separation part is a structure that is repeated regularly or irregularly. These structures can be selected from various structures and structures that can be produced by a circular knitting machine. When sweat is absorbed, the outer layer containing the water-absorbing self-shrinking cellulose fibers shrinks, the density decreases, and the convex portion decreases (the thickness of the fabric decreases). (It will be thinner).

In such a three-dimensional structure fabric, as for the shape of the separation part that is partially separated, in addition to a round shape, an elliptical shape, a rectangular shape, a rhombus shape, a dot shape with an area such as a star shape, etc. are optional, Arrangement is also arbitrary, such as checkered pattern, rising right, irregular shape. If the size of the separation portion is too small or too large, the convex portion reducing effect during sweat absorption is reduced. In the case of a dot shape having an area such as a round shape or a square shape, the major axis and the minor axis are both preferably 2 to 15 mm, particularly preferably 3 to 12 mm. In the case of a continuous shape having a certain width, the width is preferably 2 to 15 mm, particularly preferably 3 to 12 mm.
Moreover, since the total area of the separation part which occupies in the three-dimensionally structured fabric is too small, the effect of reducing the thickness during sweating is small. Therefore, the total area is preferably 20% or more of the circular knitted fabric surface. If it is more preferably 30% or more, particularly preferably 40% or more, the comfortable clothing can be expected to have a great effect of reducing the thickness during sweating and an increase in the amount of heat release, thereby suppressing the sweating.

  The separation part in the three-dimensionally structured fabric of the present invention has an arbitrary shape as described above. The non-separation part needs to be formed so as to surround the separation part, and the separation part and the non-separation part need to be repeatedly formed. About this non-separation part, it may be constituted by any one of the fibers contained in the separation part, or may be knitted together, or may be constituted by a yarn different from the separation part. For example, the non-separating part in the wale direction can contain water-absorbing self-shrinking cellulose fibers, and the non-separating part in the course direction can be composed only of non-water-absorbing shrink fibers. As the knitting structure, any structure can be used as long as the structure is knitted using both the cylinder bed and the dial needle bed of the circular knitting machine, such as smooth and milling machines. Moreover, about a non-separation part, the one containing many non-water-absorbing shrinkable fibers can reduce the mixing rate of a cellulose fiber as a three-dimensionally structured fabric, and becomes a knitted fabric superior in cost and fastness.

  In the three-dimensionally structured fabric of the present invention, the ratio of the number of courses of (C) and (D) is preferably (C) / (D) of 1.1 to 5.0, more preferably 2. 0 to 4.0. If the ratio of the number of courses is 1.1 or more, the convex portion is likely to appear in a normal state where no sweat is absorbed, and the effect of reducing the thickness of the convex portion during sweat absorption can be sufficiently exhibited. Further, when the ratio of the course is 5.0 or less, the normal convex portions are easily formed beautifully, and the convex portion reducing effect at the time of sweat absorption is clear, which is also preferable in terms of productivity. In addition, when the number of courses of the outer layer of the separation part is not constant between wales, the wales with the largest number of courses are set as the number of courses. Furthermore, the number of courses is measured only for the knit loop, and the tack loop and the welt loop are not counted as the number of courses. However, these are applied when the sizes of the knit loops of both outer layers are substantially the same. When the sizes of the knit loops of both outer layers are different, the calculation is performed by converting both the outer layers into the same knit loop size. For example, when the size of the knit loop of one outer layer (C) is half the size of the other outer layer (D), (C) × 2 is treated as (C) in the calculation. Note that the size of the knit loop is determined by the knitting length constituting the separation portion.

In the three-dimensionally structured fabric of the present invention, the one outer layer (C) constituting the separation part may contain water-absorbing self-shrinking cellulose fibers, and may be knitted with non-water-absorbing shrinkable fibers. As the knitting method, a method of alternately knitting water-absorbing self-shrinking cellulose fibers and non-water-absorbing shrink fibers, a method of knitting yarn with non-water-absorbing shrink fibers, and the like can be used. The mixing ratio is preferably at least wt%. If it is less than 15% by weight, the thickness phenomenon of the convex part is less preferred at the time of sweat absorption. Particularly preferably, the mixing ratio is 20% by weight or more.
Further, the other outer layer (D) constituting the separation part is mainly composed of non-water-absorbing shrinkable fibers, but may contain a small amount of water-absorbing self-shrinking cellulose fibers. The mixing ratio of the water-absorbing self-shrinking cellulose fibers is preferably less than 5% by weight, and a mixing ratio of 5% by weight or more is not preferable because the effect of reducing convex portions is reduced during sweat absorption. It is preferable that all are comprised only with a non-water-absorbing shrinkable fiber.

Furthermore, it is preferable that it is 5 to 50 weight% about the mixing rate which occupies for the whole three-dimensional fabric of the cellulose fiber of the twist coefficient 8200-35000, and it is more preferable to set it as the mixing rate of 10 to 30 weight%. If the amount is less than 5% by weight, the convex portion of the circular knitted fabric is slightly reduced at the time of sweat absorption of the present invention, and if it exceeds 50% by weight, the shrinkage at the time of sweat absorption of the whole three-dimensional fabric increases and the clothes size changes, which is not preferable. . A method for mixing cellulose fibers having a twist coefficient of 8200 to 35000 is arbitrary, and a method based on fiber arrangement, a method for forming a composite yarn with a non-shrinkable yarn, and the like can be performed.
In the present invention, the three-dimensionally structured fabric can be manufactured by a circular knitting machine, and the circular knitted fabric density can be arbitrarily set.

  As an example of a specific method for producing a three-dimensionally structured fabric according to the present invention, a double circular knitting machine is used, water-absorbing self-shrinking cellulose fibers are partially used in the top part of the cylinder, and the number of courses in the separation part of the cylinder is also used. The organization will be more than the number of dial courses. At this time, water-absorbing self-shrinking cellulose fibers can be used alone, or spliced yarns with ordinary fibers such as polyester and nylon can be used. Furthermore, a non-separation part is required between the separation part and the separation part. By providing the non-separating part, the separating part and the non-separating part are repeatedly formed in the course direction and the wale direction, and it becomes possible to form a dot-like convex part having an area on the three-dimensionally structured fabric. Therefore, the heat dissipation effect can be enhanced.

  A normal dyeing finishing process can be used for the dyeing finish of the three-dimensional fabric of the present invention. The dyeing conditions are set according to the fiber material to be used, and the dyeing machine to be used is arbitrary such as a liquid dyeing machine or a wins dyeing machine. Moreover, it is preferable to provide a water absorbing agent in order to improve water absorption. Examples of dyeing finishing processes include putting the raw machine into the dyeing machine, performing scouring and dyeing, and then performing a finishing set that also serves as a finishing treatment such as water absorption treatment, or wet relaxation treatment, dyeing after presetting Any dyeing finishing process can be performed, such as a method of performing a finishing set that also serves as a finishing treatment, but care must be taken in setting the width and length in the finishing set, and the outer layer contains water-absorbing self-shrinking cellulose fibers It is necessary to finish so as to maintain the convex portion formed by the.

Hereinafter, the present invention will be described in detail by way of examples. Of course, the present invention is not limited to this.
The evaluation in the examples was measured by the following method.
(1) Wearing comfort An exercise shirt was sewed with the fabric according to the example and exercised until sweating, and the wearing comfort was subjected to sensory evaluation with 10 subjects, and the average value was defined as the wearing comfort.
There are actually two or more of the following.
5: Even if sweating, the clothes do not feel sticky or stuffy and extremely comfortable. 4: When sweating, do not feel sticky, stuffy. 3: When sweating, the clothes are slightly sticky but comfortable. 2: When sweating , I feel a little sticky feeling and stuffy feeling 1: When I sweat, I feel quite sticky and stuffy feeling is very uncomfortable. (2) Twist factor The twist factor of the cellulose fiber was determined by the following.
Twisting coefficient = (fineness) ^0.5 × twisting number (unit: twisting number / m)

(3) Circular knitted fabric manufacturability During the production of the circular knitted fabric, the knitting property of the twisted cellulose fibers was evaluated.
The following three or more can be route-produced, and the higher the numerical value, the better.
5: Circular knitted fabric can be manufactured without problems.
4: Slight warp and the like occur, but an acceptable product can be produced.
3: A problem such as a slight thread breakage occurred, but a passing material can be produced.
2: Occurrence of thread breakage or the like, and a circular knitted fabric can be manufactured, but it is a rejected reaction.
1: Difficult to manufacture a circular knitted fabric due to the occurrence of warpage, yarn breakage, etc.
(4) Rate of decrease in knitted fabric density Under an environment of 20 ° C. and 65% RH, the density (course / inch × wale / inch) (E) when the sample is dried is measured. Next, 50% of the weight of the warp knitted fabric is absorbed by the sample, the density at the time of water absorption (course / inch × wale / inch) (F) is measured, and the knitted fabric density reduction rate is obtained by the following equation (2). . Further, when the density increases when (F) <(E), it is indicated by-(minus).
Rate of decrease in knitted fabric density (%) = ((FE) / E) × 100 (2)

(5) Convex part forming property at the time of drying With the three-dimensional structure fabric obtained in the example, the appearance evaluation of the convex part forming property of the outer layer in the dry state was evaluated.
If it is 2 or more below, a convex portion is formed, and the higher the numerical value, the thicker the convex portion.
5: Convex part protrudes clearly.
4: The convex part is formed fairly clearly. 3: The convex part formation can be immediately identified. 2: The convex part is formed a little. 1: The convex part is not formed and is almost flat.

(6) Thickness reduction of the convex part during sweat absorption
The three-dimensional fabric obtained in the example was absorbed by 100% by weight, and the appearance reduction of the thickness reduction of the convex portion of the outer layer at the time of water absorption was evaluated.
If it is 2 or more below, the thickness reducing property of the convex portion is recognized, and the higher the numerical value, the larger the decrease, and the effect of the present invention is recognized.
5: The knitted fabric is almost flat. 4: The thickness of the convex part is greatly reduced, and the convex part remains slightly. 3: The thickness of the convex part is reduced. 2: Although the thickness of the convex portion is slightly reduced, it is not clearly understood 1: The thickness reduction of the convex portion is hardly understood [Example 1]
When a milling structure was knitted using a 28 gauge circular knitting machine, ordinary fibers and cellulose fibers were alternately arranged and knitted. In this knitting, 84 dt / 36 f polyester fiber 2-heater false twisted yarn was used as normal fiber, and cupra fiber 84 dt / 45 f was used as cellulose fiber. In this case, the used cupra fiber is a normal cupra fiber not treated with alkali.

The knitted raw machine was put into a liquid dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then subjected to alkali treatment at a concentration of 60 g / L of sodium hydroxide at 30 ° C. for 20 minutes. Subsequently, only the ester side was dye | stained at 130 degreeC. Since the dyed knitted fabric is uneven, it was dried using a short loop dryer, then stretched to the extent that wrinkles of the knitted fabric could be removed with a pin tenter, and finished at 170 ° C. for 60 seconds. In addition, at the time of this dyeing | staining, the water absorbing agent was provided in the bath and dye | stained.
The cupra fiber of the resulting knitted fabric was extracted and the water absorption elongation was measured and found to be + 5.8%. Moreover, the comfort wearing test at the time of exercise | movement sweating of the obtained knitted fabric was done. The results of the wearing test are shown in Table 1.

[Examples 2 to 8]
In Example 1, the alkali treatment conditions and the type of cellulosic fiber were changed to produce cellulosic fibers having different water absorption elongation rates. The wearing comfort of the knitted fabric using this fiber was evaluated, and the results are shown in Table 1.

[Example 9]
A normal polyester fiber 56dt / 24f original yarn was used as the warp, and a normal polyester fiber 56dt / 24f original yarn and two rayon fibers 67dt / 24f were alternately driven into the weft to woven a 3/1 satin structure. .
The woven green machine was put into a liquid flow dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then subjected to alkali treatment at a concentration of 50 g / L of potassium hydroxide at 50 ° C. for 25 minutes. Subsequently, only the ester side was dye | stained at 130 degreeC. Since the dyed woven fabric is uneven, it was dried using a short loop dryer, then stretched to the extent that wrinkles of the knitted fabric could be removed with a pin tenter, and finished at 180 ° C. for 60 seconds. In addition, the water absorbing agent was given at the time of this finishing set.
When the rayon fiber of the obtained woven fabric was extracted and the water absorption elongation was measured, it was + 9.3%.
Moreover, the comfortable wearing test at the time of exercise | movement sweating of the obtained fabric was done. The results of the wearing test are shown in Table 1.

[Example 10]
A smooth structure was knitted using cupra spun yarn 1/64 Nm (hair count) with a 22 gauge circular knitting machine. The cupra spun yarn used is a normal cupra spun yarn not treated with alkali. The knitted raw machine is put into a liquid dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and 30 ° C. at a concentration of sodium hydroxide of 60 g / L. Treated with alkali for 20 minutes. Next, the cupra spun yarn was dyed with reactive dye. After drying using a short loop dryer, the knitted fabric was stretched with a pin tenter to the extent that wrinkles could be removed, and finished at 170 ° C. for 60 seconds. In addition, the water absorbing agent was given at the time of this finishing set.
The cupra spun yarn of the obtained knitted fabric was extracted and the water absorption elongation rate was measured and found to be + 4.7%.
Moreover, the comfort wearing test at the time of exercise | movement sweating of the obtained knitted fabric was done. The results of the wearing test are shown in Table 1.

[Example 11]
The cupra fiber 56dt / 30f and the polyester W-shaped cross-section yarn 56dt / 30f were entangled at 80 pieces / m with an interlace nozzle MK-2 made by Awa Spindle before false twisting, and then Mach 33H made by TMT Machinery. A composite yarn was prototyped by one heater false twist under conditions of a processing speed of 300 m / min, a first heater temperature of 200 ° C., a twister belt angle of 95 °, and a draw ratio of 0.984 times using a nip belt type false twister. The crimp elongation of this composite yarn was 12.1%. A milling knitted fabric knitted by laying this composite yarn and two-fiber false twisted yarn of polyester fiber of ordinary fiber 84dt / 36f alternately using a 28 gauge circular knitting machine is dyed and finished under the following conditions. Went. The composite yarn was extracted from the fabric, and the water absorption elongation was measured and found to be + 5.3%.

The knitted raw machine was put into a liquid dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then alkali-treated at a concentration of 60 g / L of sodium hydroxide at 30 ° C. for 20 minutes. Subsequently, only the ester side was dye | stained at 130 degreeC. Since the dyed knitted fabric is uneven, it was dried using a short loop dryer, then stretched to the extent that wrinkles of the knitted fabric could be removed with a pin tenter, and finished at 170 ° C. for 60 seconds.
A comfortable wearing test of the obtained knitted fabric during exercise sweating was performed. The results of the wearing test are shown in Table 1.
[Example 12]
Nylon 66 highly oriented unstretched yarn 70 dt / 34f was processed with an ATF-21 disk friction type false twister manufactured by TMT Machinery Co., Ltd. at a processing speed of 400 m / min, first heater temperature 200 ° C., 5 urethane disks, draw ratio 1. False twisting was performed under the condition of 260 times. The obtained 1 heater false twisted yarn and cupra fiber 56dt / 30f were false twisted, and then entangled at 80 pieces / m with an interlace nozzle P-142 manufactured by Hebaline Co., to obtain a composite yarn. The crimp elongation of this composite yarn was 71.8%. A milling knitted fabric knitted by laying this composite yarn and two-fiber false twisted yarn of polyester fiber of ordinary fiber 84dt / 36f alternately using a 28 gauge circular knitting machine is dyed and finished under the following conditions. When the composite yarn was extracted from the resulting fabric and the water absorption elongation rate was measured, it was + 4.6%.

The knitted raw machine was put into a liquid dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then subjected to alkali treatment at a concentration of 50 g / L of sodium hydroxide at 40 ° C. for 20 minutes. Subsequently, only the nylon side was dye | stained at 98 degreeC. Since the dyed knitted fabric is uneven, it was dried using a short loop dryer, then stretched to the extent that wrinkles of the knitted fabric could be removed with a pin tenter, and finished at 170 ° C. for 60 seconds.
A comfortable wearing test of the obtained knitted fabric during exercise sweating was performed. The results of the wearing test are shown in Table 1.
[Example 13]
When the structure of FIG. 12 was knitted using a 28-gauge single circular knitting machine, 1 was arranged to be ordinary fibers, 2 was cellulose fibers, 1 was knitted for 3 courses, and 2 was knitted for 3 courses. In this knitting, a two-heater false twisted yarn of 167 dt / f polyester fiber was used as normal fiber, and cupra fiber 84 dt / 45 f was used as cellulose fiber. In this case, the used cupra fiber is a normal cupra fiber not treated with alkali.

The knitted raw machine was put into a liquid dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then subjected to alkali treatment at a concentration of 50 g / L of sodium hydroxide at 30 ° C. for 20 minutes. Subsequently, only the ester side was dye | stained at 130 degreeC. Since the dyed knitted fabric is uneven, after drying using a short loop dryer, the knitted fabric was stretched to the extent that wrinkles of the knitted fabric could be removed with a pin tenter, and finish setting was performed at 170 ° C. for 60 seconds. . A water-absorbing agent was applied simultaneously with the dyeing in the liquid dyeing. The obtained knitted fabric had a structure in which a welt loop was continuously formed in the course direction.
The cupra fiber of the resulting knitted fabric was extracted and the water absorption elongation was measured and found to be + 5.7%.
Using the obtained knitted fabric, a T-shirt was sewn and a wearing test was performed. Table 2 shows the wearing results.

[Examples 14 to 17]
In Example 13, the thickness of the polyester processed yarn or the yarn arrangement at the time of knitting was changed to change the mixing ratio of cellulose fibers, and the number of continuous welt loops of cellulose fibers was changed to produce a knitted fabric. The wearing comfort of the obtained knitted fabric was evaluated, and the results are shown in Table 2.
[Example 18]
When the structure of FIG. 13 is knitted using a 22 gauge double circular knitting machine, it is arranged so that it becomes a composite yarn containing 1 ordinary fiber, 2 and cellulose fiber, and 1 to 2 is knitted repeatedly. Thereafter, 1 and 3 were repeatedly knitted four times, and this was repeated to obtain a knitted fabric. In this knitting, a 2-heater false twisted yarn of 84 dt / 72f polyester fiber as normal fiber, an alkali-untreated normal cupra fiber 56 dt / 30 f as a composite yarn containing cellulose fiber, and a polyester W-shaped cross-section yarn 56 dt / A raw machine was knitted using a composite yarn that was simultaneously twisted at 180 ° C. using 30f. The knitted raw machine was put into a liquid dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then subjected to alkali treatment at a concentration of 50 g / L of sodium hydroxide at 30 ° C. for 20 minutes. Subsequently, only the ester side was dye | stained at 130 degreeC. Since the dyed knitted fabric is uneven, after drying using a short loop dryer, the knitted fabric was stretched to the extent that wrinkles of the knitted fabric could be removed with a pin tenter, and finish setting was performed at 170 ° C. for 60 seconds. . A water-absorbing agent was applied simultaneously with the dyeing in the liquid dyeing. The obtained knitted fabric had a structure in which tack loops were continuously formed in the course direction.
The cupra fiber of the resulting knitted fabric was extracted and the water absorption elongation was measured and found to be + 5.7%.
The obtained knitted fabric is used to sew a T-shirt and a wearing test is performed. The wearing results are shown in Table 2.

[Example 19]
When knitting a half structure using a 28-gauge single tricot knitting machine, a W-shaped cross section yarn of polyester 56dt / 30f is used as a normal fiber on the front, and cupra fiber 56dt / 30f is used as a cellulose fiber on the back. Knitted with an all-in threader to arrange the yarns. In this case, the used cupra fiber is a normal cupra fiber not treated with alkali.

The knitted raw machine was put into a liquid flow dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and alkali-treated in an aqueous solution of sodium hydroxide having a concentration of 50 g / L at 30 ° C. for 20 minutes. Next, the polyester fiber and the cupra fiber were dyed. Since the dyed knitted fabric is uneven, after drying using a short loop dryer, the knitted fabric is stretched to the extent that wrinkles of the knitted fabric can be removed with a pin tenter, and finish setting is performed at 170 ° C for 60 seconds. It was. In addition, the water-absorbing agent was applied simultaneously with dyeing during liquid flow dyeing.
When the knitted fabric density reduction rate of the obtained warp knitted fabric was measured, it was 17.8%, and when the cupra fibers of the obtained knitted fabric were extracted and the water absorption elongation rate was measured, it was + 5.8%.
The obtained knitted fabric was used to sew a T-shirt to conduct a wearing test. Table 3 shows the wearing results.

[Examples 20 to 22]
In Example 19, the structure was changed to change the shaking amount, the mixing ratio, and the looping of the cellulose fibers to produce a warp knitted fabric. The wearing comfort of the knitted fabric using these was evaluated. The results are shown in Table 3.
[Example 23]
The organization of FIG. 14 was knitted using a 28 gauge circular knitting machine. For 1, 84 heater / twisted yarn of polyester fiber of 84 dt / 36 f was used as normal fiber, and for cup 2, cupra fiber 84 dt / 45 f of 18,000 twist coefficient was used. After repeating 1 to 2 10 times, the texture of the non-separated part in FIG. 9 is made to be 4 mm in the finished width by using 2-heater false twisted yarn of 56 dt / 24f polyester fiber which is a non-shrinkable yarn. Organized.

The knitted raw machine was put into a liquid dyeing machine, refined at 80 ° C. for 20 minutes, and then dyed only on the ester side at 130 ° C. Since the fabric after dyeing has a width and the knitted fabric has an uneven shape, it was drawn out at 170 ° C. for 60 seconds until the convex portion was extended by a pin tenter.
A T-shirt type was sewn on the obtained knitted fabric, and a wearing test for comfort during exercise sweating was performed.
Table 4 shows the results of the wearing test.
[Examples 24-27, Comparative Example 2]
In Example 23, the knitted fabric was manufactured using cellulose fibers having different twist coefficients shown in Table 4, and manufactured by changing the width of the non-separation part, and these were evaluated. The results are shown in Table 4.

[Example 28]
The structure shown in FIG. 15 was knitted by a 28 gauge circular knitting machine. In No. 1, a two-heater false twisted yarn of 84 dt / 36 f polyester fiber was used as a normal fiber, which was mainly connected to the cylinder side and a tack structure mainly as a tentacle structure. For No. 2, a spliced yarn of 2-heater false twisted yarn of 56 dt / 24f polyester fiber as ordinary fiber and cupra fiber 84 dt / 45f having a twist coefficient of 18000 was used. After repeating 1 to 2 10 times, the non-separation part R is made to be 5 mm in the finished width in a milling structure using 2-heater false twisted yarn of polyester fiber of 56 dt / 24f as ordinary fiber. Organized.

The knitted raw machine was put into a liquid dyeing machine, refined at 80 ° C. for 20 minutes, and then dyed only on the ester side at 130 ° C. Since the fabric after dyeing has a width and the knitted fabric has an uneven shape, it was set out at 170 ° C. for 60 seconds until the unevenness was extended by a pin tenter.
A T-shirt type was sewn on the obtained knitted fabric, and a wearing test for comfort during exercise sweating was performed.
Table 4 shows the results of the wearing test.
[Example 29]
The structure of FIG. 16 was knitted using a 28 gauge circular knitting machine, and [1], [2] [4] [5] [6] [8] had a polyester fiber 2 heater of 84 dt / 36 f as ordinary fibers. For the [3] and [7], two-heater false twisted yarn of cupra fiber 56dt / 30f with a twist coefficient of 25000 and polyester fiber of 56dt / 24f, which is a normal fiber, was used as the false twisted yarn. These were knitted with splicing and adjusted so that the surface of the knitted fabric became 56 dt / 24f polyester fiber, and after repeating [1] to [4] four times, [5] to [8] were knitted four times. [3] [4] [7] [8] constituting the separation part forms the convex part of (C) part, and one outer layer (D) part is [1] [2] [5] [6] Formed and knitted so that the ratio of the number of courses (C) / (D) was 2.0 times.

The knitted raw machine was put into a liquid dyeing machine, refined at 80 ° C. for 20 minutes, and then dyed only on the ester side at 130 ° C. At the same time as dyeing, a water-absorbing agent was also introduced, and dyeing proceeded while imparting water absorption to the knitted fabric. Since the dyed fabric has a width and the knitted fabric has an uneven shape, it is dried with a short loop dryer, 10% wider than the dried width with a pin tenter, and set at 170 ° C for 60 seconds. It was.
In the obtained knitted fabric, a convex structure was developed in the outer layer part (C) knitted on the cylinder side, and a three-dimensional structure circular knitted fabric in which the thickness of the convex part was reduced by sweat absorption was obtained.
Table 5 shows the performance test results of the three-dimensional structure circular knitted fabric.

[Examples 30 to 34]
In Example 29, it manufactured by changing ratio (C) / (D) of the number of courses of both outer layers according to the number of knitting [3] [4] [7] [8], and evaluated these. The results are shown in Table 5.

  If the fabric according to the present invention is used to produce a fabric, it is possible to produce clothes that are comfortable when worn and that do not feel sticky or stuffy when sweating, and are comfortable in clothes such as sportswear, inner wear, and outer wear. A comfortable wearing feeling is obtained.

Claims (10)

  A cellulose fiber-mixed fabric comprising cellulose fibers having a dimensional change rate of 2% or more at the time of water absorption.   The cellulose fiber-mixed fabric according to claim 1, wherein water-absorbing self-extending cellulose fibers having a water absorption elongation rate of + 3% or more are contained.   The cellulose fiber-mixed fabric according to claim 2, wherein the cellulose fiber content is 10 wt% or more.   The mixed use of cellulose fibers according to claim 3, which has a weft loop of water-absorbing self-extending cellulose fibers having a water absorption elongation rate of + 3% or more and / or a circular knitted structure having a portion in which a tuck loop is continuously formed by two or more loops. Fabric.   The water-absorbing self-extending cellulose fiber having a water absorption elongation rate of + 3% or more is looped and has a 1 to 4 needle swing structure, and further has a knitted fabric density reduction rate of 5 to 40% at the time of water absorption. The fabric for mixing cellulose fibers according to claim 3, which has a warp knitting structure.   The cellulose fiber-mixed fabric according to claim 4 or 5, wherein the water-absorbing self-extending cellulose fiber is immersed in an alkaline aqueous solution of 20 g / L or more, 20 ° C or more, and 5 minutes or more.   The water-absorbing self-shrinking cellulose fiber having a water absorption elongation rate of -2% or less is contained.   A multi-layered fabric in which a separation part and a non-separation part are repeatedly formed, and one outer layer and / or intermediate layer contains water-absorbing self-shrinking cellulose fibers having a water absorption elongation of -2% or less. The other outer layer is composed of non-water-absorbing shrinkable fibers, and the non-separating portion in the course direction is composed of non-shrinkable fibers.   A three-dimensionally structured fabric in which a separation part and a non-separation part are repeatedly formed, and one outer layer (C) constituting the separation part has a water-absorbing self-shrinking cellulose fiber having a water absorption elongation of -2% or less. 8. The cellulose fiber-mixed fabric according to claim 7, wherein the other outer layer (D) contains non-water-absorbing shrinkable fibers, and the number of courses of both outer layers is (C)> (D).   The cellulose fiber-mixed fabric according to claim 7, wherein the water-absorbing self-shrinkable cellulose fiber has a twist coefficient of 8200 to 35000.

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