JP6006057B2 - Knitted fabric for clothing having a pile structure - Google Patents

Description

  The present invention has antifouling properties and deodorizing properties, and is excellent in wearing comfort such as stretchability and flexibility, excellent texture, anti-steaming property, etc., especially, stain removal and deodorant sustainability in repeated washing It is related with the knitted fabric for clothes excellent in.

  Conventionally, many fiber structures having antifouling properties have been proposed. In general, for example, a hydrophilic resin having a hydrophilic group such as polyethylene glycol, a fluorine-containing water repellent containing a hydrophilic group, or a resin having both of these resins is known. Yes. However, it is difficult to say that these have sufficient antifouling properties.

  Those with hydrophilic resin have a certain effect in improving soil removal by washing, but the action of NOx, SOx gas, etc. in the atmosphere, and other processing agents such as fluorescent whitening agents and antioxidants In some cases, yellowing may become a problem due to the action of, and the hydrophilic resin tends to deteriorate due to repeated washing.

  In addition, those to which a fluorine-based water repellent containing a hydrophilic group has been added are resistant to liquid stains, both aqueous and oily, but are highly viscous body fluids, such as mucins that are generally secreted from female genitals. Contained high-viscosity secretion fluid, etc., adheres in the same way as those without a fluorine-based water repellent, and stains from washing may be difficult to remove. Could not be resolved.

  Conventionally, as a fiber structure excellent in antifouling property and deodorizing property, at least one layer selected from the group consisting of an amorphous titanium peroxide fine particle layer, a zeolite layer and an alkylsilicate layer is provided on the surface of the fiber. In addition, a fiber structure is known in which a hydrophilic resin or a fluorine-based resin and a photocatalytic semiconductor are attached to the surface. (See Patent Document 1)

  However, since it has an inorganic material layer on the surface of the fiber, when used as a cloth for clothing, the texture tends to be hard, and the antifouling and deodorizing properties are improved by adhesion of the functional agent. Also, the soil removal and the deodorant persistence in repeated washing were not sufficient.

In addition, the present applicant has proposed to introduce a carboxyl group structure into the cellulosic fiber for the purpose of improving stain removal and deodorization by washing with water without using a detergent. (See Patent Document 2)
However, improvement in the removal of stains and deodorant performance due to repeated washing is still required, and as a result of further improvements, the configuration of the present invention has been found.

Japanese Patent Laid-Open No. 2000-119956 WO2005 / 5711

  The present invention has antifouling properties and deodorizing properties, and is excellent in wearing comfort such as stretchability and flexibility, excellent texture, anti-steaming property, etc., especially, stain removal and deodorant sustainability in repeated washing An object of the present invention is to provide a knitted fabric for clothing that is superior to the above.

  In order to achieve the above object, the present invention provides a knitted fabric for clothing having the following pile structure.

Item 1. Including a modified cellulosic fiber having a carboxyl group structure in the molecule;
Pile structure, it possesses a loop pile layer made of a pile yarn of the yarn containing the modified cellulosic fibers, and a ground structure layer consisting of the pile yarn and ground yarn, single pile of the loop pile layer A knitted fabric for clothing having a pile structure, wherein the loop is connected to the ground tissue layer in a twisted loop shape .

Item 2. Including a modified cellulosic fiber having a carboxyl group structure in the molecule;
The pile structure has a loop pile layer composed of a pile yarn of a yarn including the modified cellulosic fiber, and a ground texture layer composed of the pile yarn and the ground yarn, and the modified cellulosic fiber is A knitted fabric for clothing having a pile structure, characterized in that the yarn to be contained is composed of spun yarn blended with polyester, and the blend ratio of the polyester in the blended yarn is set in the range of 5% to 65% .

Item 3. The knitted fabric for clothing having a pile structure according to Item 2 , wherein a single pile loop of the loop pile layer is connected to the ground tissue layer in a twist loop shape.

Item 4. Item 4. A knitted fabric for clothing having a pile structure according to item 1, 2 or 3, wherein the moisture permeability is 400 g / m ² · h or more according to JIS L 1099 (A-1 method).

  Item 5. Item 5. The knitted fabric for clothing having a pile structure according to item 1, 2, 3, or 4, wherein the loop pile layer thickness hp is 0.2 mm or more and less than 3 mm.

  Item 6. Item 6. The knitted fabric for clothing having a pile structure according to Item 1, 2, 3, 4, or 5, wherein the ground tissue layer thickness hg is 0.7 mm or more and less than 4 mm.

  The knitted fabric for apparel of the present invention includes a modified pile-based fiber having a carboxyl group structure in the molecule, and a pile structure composed of a pile yarn of a yarn including the modified cellulose-based fiber; And a pile structure characterized by having a ground texture layer composed of the pile yarn and the ground yarn. As a result, it has antifouling and deodorizing properties, and is excellent in wearing comfort such as stretchability and flexibility, excellent texture, anti-steaming property, etc., especially for stain removal and deodorant sustainability in repeated washing Are better.

1 is an example (schematic diagram) of a cross-sectional structure of a knitted fabric for clothing having a pile structure according to the present invention. It is an example of a pile knitting structure, and is a schematic diagram of a knitting state of a structure in which only one yarn protrudes as a pile in a tentacle knitting structure using two yarns. They are the cross-sectional schematic diagram (a) and the enlarged photograph (b) (c) image | photographed in the illustration direction about the example of the pile structure in the knitted fabric for clothing which has the pile structure by this invention. It is the photograph and explanatory drawing which show pile layer thickness hp and ground structure layer thickness hg about the example of the pile structure in the knitted fabric for clothes which has the pile structure by this invention.

Hereinafter, a knitted fabric for clothing having a pile structure according to the present invention will be described.
The knitted fabric for clothing having a pile structure of the present invention includes a modified cellulosic fiber having a carboxyl group structure in the molecule.
Thereby, the odor based on both an acidic malodorous substance and a basic malodorous substance can be reduced.

Most of the causes of clothes stains and odors are caused by secretions from the human body, and others are caused by moisture that dries after washing and breeds germs, and external stains. For example, there are mud stains and oil stains such as edible oil and machine oil.
Examples of secretions from the human body that can cause stains and odors on clothing include body fluids such as sweat, urine, saliva, vaginal fluid, and milk, as well as adhesion of sebum.

  Although the sweat itself is almost odorless, the temperature and humidity of the sweating area rises, and excess sebum is more likely to be ejected, making it easier for normal bacteria to grow. The skin resident bacteria remarkably generate a peculiar unpleasant odor by decomposing skin secretions generated by perspiration into components such as short-chain fatty acids and ammonia. The urine itself is almost odorless, but ammonia is generated by decomposition by resident skin bacteria. Saliva contains enzymes such as amylase and maltase, which breaks down food residues and generates acid content. Saliva may also contain urea, and ammonia is generated by the action of ureolytic enzymes.

Vaginal secretion mucus is a lot of sweat, sebum, secretions from the Bartholin and Skene glands in the vulva, fluid from the endometrium and egg yolk, cervical mucus, detached cells, secretion from the vagina wall itself, etc. This is a mixture of body fluids, and contains pyridine, squalene, urea, acetic acid (ethanoic acid), butyric acid (butanoic acid), complex alcohols such as cholesterol, glycols, ketones, aldehydes and the like. In addition, although there are individual differences, other fatty acids include short-chain fatty acids such as propionic acid (propanoic acid) and isovaleric acid (pentanoic acid). Milk also contains urea and generates ammonia as well. Sebum is broken down to produce fatty acids.
As described above, the odor caused by secretions from the human body includes both acidic malodorous substances and basic malodorous substances.

In the present invention, the cellulosic fibers constituting the knitted fabric for clothing having a pile structure are modified to have a COO group structure, so that there are many Na (sodium) ions and H (hydrogen) ions present in nature. Therefore, it has the COO-based structure of the modified cellulosic fiber in the form of both COONa and COOH. In addition, each time washing is performed, Na caused mainly by the alkaline agent in the detergent is repeatedly supplied, and H that is present in a large amount in water is also repeatedly supplied. The effect of reducing odor based on both offensive odor substances persists even after repeated washing.
The structure of COONa in the modified cellulose molecule contributes to the deodorization of acidic malodorous substances.

The mechanism of action is not clear, but the modified carboxylic acid structure of cellulose is weaker than the main acidic malodorous acid. It is considered that the structure of CH ₃ COOH (odorous substance), which is regarded as a relatively strong acid, compared to the carboxylic acid structure of the refined cellulose is more stable when ion exchange is performed as CH ₃ COONa (odorless).

In addition, the structure of COOH in the modified cellulose molecule contributes to the non-bromination of basic malodorous substances. Although its mechanism of action is not clear, for example, when ammonia (NH ₃ ) is taken as an example, COOH of the modified cellulose captures NH ₃ (bad odor substance) and becomes -COONH ₄ (odorless). Conceivable.

  In addition, the skin resident bacteria function to suppress the propagation of pathogenic microorganisms. However, in the knitted fabric for clothing having the pile structure of the present invention, these beneficial skin normal bacteria are treated while treating the acidic malodorous substances that are produced. It also contributes to the reduction of bad bacteria around the skin by appropriately retaining the bacteria in the pile structure. This is considered to be due to the specific combination effect of the COO group structure and the pile structure in the cellulose molecule, which improves the moisture permeability of the knitted fabric and prevents the humidity in the clothes from increasing.

Thereby, secretory fluid and secretory mucus from the human body can be contained and held in the pile structure and subsequently diffused, and uncomfortable contact feeling on the skin surface can be reduced. In addition, the knitted fabric having a pile structure allows the wearer to operate the wearing part freely in the front-rear and left-right directions without feeling cramped, while maintaining an appropriate fit to the skin. It is difficult to cause friction. This is considered because the pile height absorbs the transition of the human body or the knitted fabric, and the sliding of the contact point between the pile and the skin can be suppressed.
The knitted fabric for clothing having the pile structure of the present invention can have a pile in a direction protruding from the fabric surface on almost the entire skin side of the knitted fabric.

As a result, secretory fluid and secretory mucus from the human body can be quickly taken into and retained in the pile structure and subsequently diffused in the direction of the fabric surface, thereby reducing discomfort on the skin surface.
It is thought to be due to the action of separating the skin surface and the liquid surface by the pile structure, which should be called the spacer effect, with the liquid diffusion into the knitted ground and the liquid diffusion into the fiber yarn.

  The pile structure is a loop pile. By being a loop pile, the three-dimensional structure of the pile is easily stabilized. In the loop pile, it is preferable that each single pile of the loop pile layer forms a twisted loop and is connected to the ground texture layer as shown in FIGS. 3 and 4 by the torque of the yarn forming the loop. In order to express this appropriate torque, the yarn constituting the loop pile is preferably subjected to a spinning process or a twisting process.

  By having a twisted loop structure, a higher three-dimensional structure can be obtained compared to, for example, a knitted fabric having an arc-shaped cross yarn structure on the surface of the knitted fabric.

  In the present invention, when the knitted fabric has a loop pile structure, the removal rate of oily soil (synthetic secretion) containing squalene by washing is improved as compared with a case where the knitted fabric does not have a loop pile structure.

  Although this mechanism of action is not clear, the pile structure in the present invention has a hydrophilic cellulose fiber surface, and therefore has a more planar structure, and the surface of the fabric is more than the fabric without the loop pile structure. It is presumed that the penetration of the oily soil into the fiber is hindered by the three-dimensional structure formed by the retention based on the three-dimensional structure accompanied by the repulsive force with the oily soil due to the hydrophilic surface.

Since the pile loop has a hydrophilic cellulose structure, the hydrophobic dirt contained in the secretion is easily retained between the three-dimensional structures of the pile loop due to repulsion with the hydrophilic fiber surface, and can be easily removed by washing. Conceivable. Hydrophilic stains contained in the secretion fluid are absorbed quickly by the hydrophilic fibers, but when washing, the hydrophilic fibers quickly draw water into the fibers and serve to transfer the hydrophilic stains to the water. It seems that dirt can be easily removed.
Moreover, it is preferable that the modified cellulosic fiber of the present invention is contained as a spun yarn in a fiber structure having a pile structure.

  Because it is spun yarn compared to filament yarn, it has a tendency to increase the surface area of the fiber because it has many single fiber ends, and combined with the highly intricate three-dimensional fiber structure called pile structure, it has excellent odor substance reduction. There is an effect.

  In the fine spinning process, it is easy to give a twist, and there is an advantage that a spun yarn by blending with a synthetic fiber such as polyester, nylon, and acrylic can be used easily.

  For example, if the polyester is increased by adjusting the mixing ratio of the polyester in the blended yarn containing cellulosic fibers, the three-dimensional structure of the pile can be more easily maintained. Thereby, the above-mentioned spacer effect can be expected more. Also, since the drying time during washing can be reduced, combined with the effect of reducing malodorous substances based on the modified cellulose, the underwear can be dried even in laundry drying environments that are difficult to dry, such as room drying in the rainy season. An unpleasant odor when bad can be reduced. Conversely, if the polyester blending ratio is reduced, more cellulosic fibers have excellent biocompatibility with the skin, so even those who have sensitive skin who may have caused abnormalities in the skin due to synthetic fibers. It becomes easy to adapt.

  In the case where the above-described effect by blending polyester is desired, 5% is preferable as the preferable lower limit of the polyester blend ratio in the mixed yarn containing cellulosic fibers, and 65% is preferable as the preferable upper limit. If it is less than 5%, the mixed effect of polyester cannot be expected, and the cost tends to be wasted. If it is more than 65%, the bad odor reduction effect based on the modified cellulosic fiber cannot be expected, and removal of oily soil by washing tends to be difficult. A more preferred lower limit is 10%, and a more preferred upper limit is 45%.

  In the knitted fabric for clothing having the pile structure of the present invention, the boundary between the pile layer 1p and the ground texture layer 1g can be confirmed by means such as image analysis of an enlarged photograph of the cloth cross section.

In the ground texture layer 1g, the fiber yarns constituting the ground texture layer have a plurality of intersecting portions having a spread in the plane direction of the fabric. On the other hand, in the pile layer 1p, the single pile 1sp is independent in the plane direction of the knitted fabric, and is connected to the ground texture layer in units of the single pile 1sp.

  Therefore, in the cross-sectional enlarged photograph of the knitted fabric, it is possible to find the boundary line of the image density from the center side in the thickness direction from both surfaces. A dimension obtained by averaging the distances between the boundary line and the vertices of 10 randomly selected single piles can be defined as a pile height hp. Since the pile height may fluctuate depending on the standing state of the pile, when the pile height hp is obtained more accurately, the pile standing state is stabilized by steam. It is desirable to employ a pretreatment in which a wet heat treatment is performed with a steamer at 3 ° C. for 3 minutes.

The preferred lower limit of the pile height in the knitted fabric for clothing having the pile structure of the present invention is 0.2 mm, and the preferred upper limit is 3 mm. If it is less than 0.2 mm, there is a tendency that the discomfort based on the contact of the secretion with the skin tends to increase or the degree of stain removal due to washing tends to decrease, which is not preferable. If it is higher than 3 mm, it is difficult to stabilize the standing state of the pile in the worn state, and the discomfort based on the contact of the secretory fluid with the skin may increase. A more preferred lower limit is 0.3 mm, and a more preferred upper limit is 2.5 mm.
In the knitted fabric for clothing having the pile structure of the present invention, the use of the yarn types of the ground texture layer and the pile layer may be the same or different.

For example, as shown in FIG. 2, the ground texture layer can be constituted by two types of yarn use, and only one of the yarns can be used for the pile layer. By using fiber yarns having higher rigidity than the fiber yarns constituting the pile layer, the stitches can be adjusted so that the stitches do not excessively expand when following the wearer's movement. For this reason, synthetic fiber such as polyester, nylon, and acrylic can be used for the ground tissue layer. Since the above-mentioned synthetic fiber yarn is more hydrophobic than the modified cellulosic fiber yarn, it prevents the secretion fluid from moving to the outside of the knitted fabric (opposite to the skin side) and looks like a stain, and prevents liquid bleeding. It can be effectively suppressed.

The fabric thickness can be measured using, for example, a dial thickness gauge (manufactured by Ozaki Seisakusho). In the present invention, the fabric thickness of the knitted fabric for clothing having a pile structure has a preferable lower limit of 0.9 mm and a preferable upper limit of 4 mm. If it is thinner than 0.9 mm, the effect of diffusing and holding the secretory fluid is reduced, and liquid bleeding tends to occur, which is not preferable. If it is thicker than 4 mm, the inside of the clothes tends to be stuffy and uncomfortable. A particularly preferred lower limit is 1.2 mm, and a particularly preferred upper limit is 3 mm.
The use of the knitted fabric for clothing having the pile structure of the present invention superimposed on another body fabric is not limited. Highly flexible clothing design is possible by sewing and bonding.

In the present invention, the basis weight of the knitted fabric for clothing having a pile structure is such that a preferred lower limit is 100 g / m ² and a preferred upper limit is 300 g / m ² . If it is less than 100 g / m ² , the retention / diffusion performance of the secretory liquid tends to be lowered, and the deodorizing effect tends to be insufficient, which is not preferable. If it is greater than 300 g / m ² , the feel per skin becomes hard and it tends to be stuffy, which tends to cause discomfort and is not preferable. A more preferred lower limit is 150 g / m ² .

In the present invention, the moisture permeability of the knitted fabric for clothing having a pile structure (JIS L 1099 A-1 method) has a preferable lower limit of 400 g / m ² · h. By setting it to 400 g / m ² · h or more, discomfort due to stuffiness can be reduced, drying after washing is quick, and germs are less likely to grow, and the knitted fabric for clothing can be kept clean. The lower limit is more preferably 415g ^{/ m} 2 · h, particularly preferably the lower limit is 420g / ^{m 2} · h.

  In the present invention, the pile structure of the knitted fabric for clothing having a pile structure has a loop pile structure arranged in a plurality of straight lines, and the plurality of straight lines extend in the front-rear direction of the body when worn. Can take the structure. Here, the meaning of arranging in a plurality of straight lines indicates that the gaps between the single piles are arranged in parallel as if they were communicating grooves. The parallel groove structure formed by the gaps between the piles extends linearly in the front-rear direction when worn, so that the secretion can be efficiently distributed in the front-rear direction, particularly in the crotch and side portions. Can do. In addition, since the crotch piece or the side piece is a knitted fabric, the groove structure can be expanded and contracted like a pump with a natural operation compared to a woven fabric, and liquid dispersion in the front-rear direction is performed more quickly. be able to. Further, since the liquid can be distributed in the tangential direction of the edge of the leg or sleeve opening, it is possible to more effectively prevent the secretion from leaking from the opening.

  The preferable lower limit of the pitch between the single piles is 0.3 mm, and the preferable upper limit is 2 mm. If it is smaller than 0.3 mm, the diffusion effect of the secretion tends to decrease, which is not preferable. If it exceeds 2 mm, the secretion tends to come into contact with the skin, which is not preferable. A more preferred lower limit is 0.4 mm, and a more preferred upper limit is 1.5 mm.

  When pile structures are arranged in a straight line in any of the intersecting directions (for example, directions intersecting at right angles), the pitch between the single piles in the first straight line direction is equal to the single pile in the second straight line direction. It is preferable to be shorter by about 0.1 mm or more than the inter-pitch. In particular, a length of 0.15 mm or more is more preferable. This is because the effect of liquid distribution due to the loop pile structure in which the pile structure of the knitted fabric for clothing having the above-described pile structure is arranged in a plurality of straight lines easily functions in the first straight line direction.

  In the present invention, with respect to the cellulosic fibers used in the knitted fabric for clothing having a pile structure, a known method can be adopted as a method for forming cellulosic fibers in which cellulose molecules are modified to have a carboxyl group structure. For example, a method in which a vinyl compound is graft-copolymerized to a cellulose molecule, a method in which a cellulose molecule is carboxyalkylated, a method in which a hydroxyl group in a cellulose molecule is oxidized to a carboxyl group by using a catalyst such as an N-oxyl compound, etc. Can be illustrated. The modification as described above may be performed in the state of cellulosic fiber yarn or raw cotton, and the modification may be performed in the state of spun yarn or processed yarn. Of course, the modification treatment may be performed after the fiber structure such as a woven or knitted fabric is formed. Preferable is a method in which a modification treatment is performed after forming a woven or knitted fabric in that a higher modification effect can be expected.

  The presence or absence of COO groups can be qualitatively confirmed by a known analysis method. The amount of COO groups is determined by converting all COO groups into COOH groups and immersing them in an aqueous sodium hydroxide solution (0.1 N) to convert all COOH groups into COONa groups. After substitution, it can be determined by quantifying Na used for the substitution. The amount of Na used for the substitution can be quantified by titrating a sodium hydroxide aqueous solution (0.1N) in which the knitted fabric is immersed using, for example, hydrochloric acid (0.1N).

In the present invention, the moisture absorption rate of the knitted fabric for clothing having a pile structure is preferably 5% at a preferable lower limit and 20% at a preferable upper limit. If it is lower than 5%, it is not preferable since the retention performance of the secretory liquid cannot be sufficiently exhibited, and it is difficult to remove dirt due to washing. If it exceeds 20%, drying after washing takes too much time, and the knitted fabric for clothing tends to be kept clean, which is not preferable.
In the present invention, the moisture absorption rate of the knitted fabric can be obtained by the following formula (1).
Moisture absorption rate (%) = [(official weight) ÷ (absolute dry weight) −1] × 100 (1)

In the above formula (1), the dry weight is calculated, for example, by putting a piece of knitted fabric in a weighing bottle, drying it at 105 ° C. for 2 hours, weighing it, and subtracting the weight of the weighing bottle weighed in advance. can do. The official weight is determined by, for example, weighing a piece of knitted fabric, which has been measured for absolute dry weight in a weighing bottle, left in an atmosphere of temperature 20 ° C. and humidity 65% RH for 24 hours, and subtracting the weight of the weighing bottle. Can be calculated. For measurement of the absolute dry weight and the official weight, for example, a piece of dough having a size of about 10 × 20 cm can be used. Weighing is repeated until the weight becomes constant.
Examples of the present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.
Example 1

In the knitting structure of FIG. 2, using a cotton spun yarn 42 count produced through a spinning process on the yarn illustrated as a white yarn in the drawing, and using a cotton spun yarn 42 count on the yarn illustrated as a black yarn in the drawing, A knitted fabric 1A having loop piles arranged in a plurality of linear rows on one side of the fabric was manufactured. Further, processing to carboxymethylate cotton cellulose molecules (dipping the dough in an aqueous solution of sodium monochloroacetate 175 g / l and sodium hydroxide 175-60 g / l, heating to 60 ° C. and treating for 1 hour After that, knitted fabric 1AT made of modified cotton containing COO groups by washing with water to remove unreacted material (FIG. 4, fabric thickness 1.6 mm, pile layer thickness hp 0.7 mm, ground texture layer thickness hg 0.9 mm) Moisture permeability (JIS L 1099 A-1 method) 420 g / m ² · h, moisture absorption rate 8.2%). Moreover, the course direction pitch between the single piles of a pile surface was 0.8 mm, and the wale direction (straight line direction) pitch was 0.6 mm.
(Example 2)

In the knitting structure shown in FIG. 2, the 42th yarn of the modified cotton spun yarn containing the COO group produced through the spinning process in the yarn shown as the white yarn in the drawing, and the polyester filament 84 dtex / 48f is used to form a knitted fabric 1B having a loop pile arranged in a plurality of straight lines on one entire surface of the fabric (fabric thickness 1.4 mm, pile layer thickness hp 0.7 mm, ground tissue layer thickness hg 0.7 mm, moisture permeability (JIS L 1099 A-1 method) 423 g / m ² · h, moisture absorption 7.0%). Moreover, the course direction pitch between the single piles of a pile surface was 0.7 mm, and the wale direction (straight line direction) pitch was 0.5 mm.
(Example 3)

In the knitting structure shown in FIG. 2, the 42th yarn of the modified cotton spun yarn containing the COO group produced through the spinning process in the yarn shown as the white yarn in the drawing, and the polyester filament 84 dtex / 48f, a knitted fabric 1C having a loop pile arranged in a plurality of straight lines on one entire surface of the fabric (fabric thickness 1.2 mm, pile layer thickness hp 0.6 mm, ground texture layer thickness hg 0.6 mm, moisture permeability (JIS L 1099 A-1 method) 423 g / m ² · h, moisture absorption 7.1%). Moreover, the course direction pitch between the single piles of a pile surface was 0.7 mm, and the wale direction (straight line direction) pitch was 0.5 mm.
Example 4

In the knitting structure shown in FIG. 2, the mixed spun yarn No. 42 produced through a spinning process comprising 70% modified cotton containing COO groups and 30% polyester is added to the yarn shown as white yarn in the drawing, and black yarn shown in the drawing. As a knitted fabric 1D (55% cotton: 45% polyester, fabric thickness 1.5 mm, pile layer thickness) having loop piles arranged in a plurality of straight lines on the entire surface of the fabric using polyester filament 84dtex / 48f. hp0.8 mm, ground tissue layer thickness hg0.7 mm, moisture permeability (JIS L 1099 A-1 method) 428 g / m ² · h, moisture absorption 6.7%) were produced. Moreover, the course direction pitch between single piles was 0.9 mm, and the wale direction (straight line direction) pitch was 0.7 mm.
(Comparative Example 1)

In the knitting structure of FIG. 2, a mixed spun yarn # 42 consisting of 70% cotton (unmodified) and 30% polyester is used as the white yarn shown in the drawing, and polyester filament 84 dtex / 48f, a knitted fabric 1E having a loop pile on one side of the fabric (cotton 55%: polyester 45%, fabric thickness 1.5 mm, pile layer thickness hp 0.8 mm, texture layer thickness hg 0.7 mm, moisture permeability (JIS L 1099 A-1 method) 390 g / m ² · h, moisture absorption 4.9%). Moreover, the course direction pitch between single piles was 0.9 mm, and the wale direction pitch was 0.7 mm.
(Comparative Example 2)

In the knitting structure of FIG. 2, a mixed spun yarn # 42 consisting of 70% cotton (unmodified) and 30% polyester is used as the white yarn shown in the drawing, and polyester filament 84 dtex / Using 48f, a knitted fabric 1F (fabric thickness 1.5 mm, pile layer thickness hp 0.8 mm, ground texture layer thickness hg 0.7 mm) having a loop pile on one side of the fabric was produced. The knitted fabric 1F was subjected to SR processing to obtain a knitted fabric 1FT (moisture permeability (JIS L 1099 A-1 method) 398 g / m ² · h, moisture absorption 5.9%). Here, in SR processing, 1% owf of NK assist NY (manufactured by Nikka Chemical Co., Ltd.) was added to 3% owf of hydrophilic polyester-based SR processing agent (Nicepol PR-99, manufactured by Nikka Chemical Co., Ltd.). After being immersed in the treatment solution, the wafer was drawn using a padder at a drawing rate of 100%, dried at 100 ° C. for 3 minutes, and then heated at 180 ° C. for 30 seconds. Moreover, the course direction pitch between single piles was 0.9 mm, and the wale direction pitch was 0.7 mm.
(Comparative Example 3)

A knitted fabric 1G (fabric thickness: 1.1 mm) having a pile structure with a milled knitted structure was manufactured using a cotton (unmodified) 42th yarn. Further, processing to carboxymethylate cotton cellulose molecules (dipping the dough in an aqueous solution of sodium monochloroacetate 175 g / l and sodium hydroxide 175-60 g / l, heating to 60 ° C. and treating for 1 hour After that, the knitted fabric 1GT (moisture permeability (JIS L 1099 A-1 method) 430 g / m ² · h, moisture absorption 8.2) made of modified cotton containing COO groups is washed with water to remove unreacted substances). %).
(Evaluation)
Examples 1 to 4 and Comparative Examples 1 to 3 were subjected to stain removal evaluation, whiteness reduction test, and deodorization test as follows. The results are shown in Table 1.
(Soil removal evaluation) Evaluation of residual rate after washing artificial dirt

If the test cloth has a pile, after attaching squalene 1% owf, oleic acid 10% owf and gelatin 2.5% owf from the pile surface side, a detergent (Kao) Washing was carried out by adding (Attack, Inc.) to a concentration of 0.67 g / L. After drying each test cloth after washing for 5 hours in the sun, the oleic acid remaining on the test cloth is extracted with methanol, the residual amount of oleic acid is measured by gas chromatography, and the residual ratio of oleic acid (%) is calculated. Asked. Smaller numbers indicate better dirt removal.
(Whiteness reduction test) Repeated 3 times from adhesion of artificial sweat stain to washing and drying

As an accelerated test on the decrease in whiteness due to repeated wearing of clothes and washing, the test cloth was made of sodium chloride 20.0 g / L, ammonium chloride 17.5 g / L, urea 5.0 g / L, acetic acid 2.5 g / L, It was immersed in an artificial sweat solution containing 15.0 g / L of lactic acid for 5 minutes, squeezed with mangles, and then dried at 40 ° C. for 1 hour. Thereafter, washing was performed by adding a detergent (manufactured by Kao Corporation, Attack) to a concentration of 0.67 g / L. Each test cloth after washing was dried in the sun for 5 hours. Before and after repeating this operation three times, the whiteness was measured using a spectrophotometer (WHITE EYE3000, manufactured by Sakata Inx Corporation), and the amount of decrease in whiteness was determined from the difference between the measured values before and after. It shows that it is hard to discolor by repetition of wearing of clothes-washing, so that the numerical value of whiteness fall amount is small.
The whiteness is a value calculated by the following formula (2) from the L * value and b * value of the CIELAB color system.
Whiteness = L * value−3 × b * value (2)
(Deodorization test)

Put a magnetic stirrer bar in a 500 mL Erlenmeyer flask (actual volume: 625 mL), attach a thread to a test cloth obtained by cutting the knitted fabric to 4 cm × 5 cm, and fasten the end of the thread to the outside of the Erlenmeyer flask with cellophane tape, The test cloth was suspended in the Erlenmeyer flask. Then, 2% ammonia solution for ammonia deodorization and 3 μl acetic acid solution for acetic acid deodorization were dropped on the inner wall of the Erlenmeyer flask by 5 μL with a micropipette. The Erlenmeyer flask was quickly sealed with a silicon stopper covered with a double wrap, and further sealed with a rubber band made of triple wrap. Then, it was left to stand at 20 ° C. for 120 minutes while stirring with a magnetic stirrer. After leaving it to stand for 120 minutes, the silicon stopper is rubbed so that the wrap is not peeled off, and a measuring tube with a silicon stopper for measurement (for gas-tech, No.3La / ammonia: made by gas-tech, for No.81 / acetic acid) ) Was used to measure the gas concentration in the Erlenmeyer flask. A similar test was performed without suspending the test cloth in the Erlenmeyer flask, and this was used as a blank measurement value. Deodorization rate (%) for test cloth not washed using the following formula (2) (new article) and test cloth after 30 times of washing using household laundry detergent (after 30 washings) Was evaluated according to the following criteria.
Deodorization rate (%) = [(blank measurement value−test cloth measurement value) / blank measurement value] × 100 (2)
◎: Deodorization rate 90% or more ○: Deodorization rate 80% or more and less than 90% △: Deodorization rate 50% or more and less than 80% ×: Deodorization rate less than 50%

  According to the present invention, it has antifouling properties and deodorizing properties, and is excellent in wear comfort such as stretchability and flexibility, excellent texture, anti-steaming properties, etc. It is possible to provide a knitted fabric for clothing excellent in sustainability.

1: Knitted fabric for clothing having a pile structure 1sp: Single pile 1p: Pile layer 1g: Ground texture layer

Claims (6)

Including a modified cellulosic fiber having a carboxyl group structure in the molecule;
Pile structure, possess a loop pile layer made of a pile yarn of the yarn containing the modified cellulosic fibers, and a ground structure layer consisting of the pile yarn and ground yarn,
A knitted fabric for clothing having a pile structure, wherein a single pile loop of the loop pile layer is connected to a ground tissue layer in a twist loop shape . Including a modified cellulosic fiber having a carboxyl group structure in the molecule;
The pile structure has a loop pile layer composed of a pile yarn of a yarn containing the modified cellulosic fiber, and a texture layer composed of the pile yarn and the ground yarn,
The yarn containing the modified cellulosic fiber is composed of a spun yarn blended with polyester, and has a pile structure characterized in that the blend ratio of the polyester in the blended yarn is set in the range of 5% to 65%. Knitted fabric for clothing. The knitted fabric for clothing having a pile structure according to claim 2, wherein the single pile loop of the loop pile layer is connected to the ground tissue layer in a twist loop shape. The knitted fabric for clothing having a pile structure according to claim 1, 2 or 3, wherein the water vapor transmission rate is 400 g / m ² · h or more according to JIS L 1099 (A-1 method).   The knitted fabric for clothing having a pile structure according to claim 1, wherein the loop pile layer thickness hp is 0.2 mm or more and less than 3 mm.   The knitted fabric for clothing having a pile structure according to claim 1, wherein the ground tissue layer thickness hg is 0.7 mm or more and less than 4 mm.