JP7357520B2 - Fiber products - Google Patents

Description

The present invention relates to textile products such as underwear that have knitted fabrics on the edges that are used as-is without any processing at the cut points, and in particular, the edges (cut edges) remain intact even after repeated wearing and washing. Concerning textile products that are less likely to unravel (sometimes referred to as fraying or fraying).

Generally, clothing is manufactured by cutting and sewing fabric. In addition, for openings around the neck, armpits, cuffs, hem, etc. of clothing, the cut edge of the fabric can be folded back and sewn, or wrapped in another fabric such as tape and sewn. Post-treatment to prevent fraying is usually applied. Furthermore, the joints of the fabric are usually joined by sewing.
However, post-processing to prevent fraying of cut edges of fabric and cut edges of openings requires a considerable amount of sewing time, and the hemline of underwear becomes a protrusion that appears on the outer garment, impairing the feeling of wearing. This has led to problems such as problems, and improvements have been requested regarding these points.

In particular, the trend of women's clothing becoming more diverse and fashionable is progressing more and more.In particular, women's clothing is becoming more and more diverse and fashionable.In particular, women's clothing has a moderate amount of elasticity, fits comfortably to the body, is made of thin material with beautiful stitching, and the hemline of underwear is visible through the outer garment. There is a great demand for fashionable foundation clothing. In addition, there is a tendency to leave the edges of the knitted fabric uncut and form it as is, and enjoy it as fashionable clothing.

In response to this tendency, Japanese Patent No. 5,631,528 (Patent Document 1) discloses a stretchable knitted fabric that does not require edge trimming even after being cut, regardless of the cutting direction with respect to the knitting direction. The stretchable knitted fabric disclosed in Patent Document 1 is a stretchable knitted fabric that is used as is without processing the cut portion, and is composed of elastic fibers and inelastic fibers, and has a draft rate of elastic fibers. It is a stretch knitted fabric made of only air-entangled composite yarn that has been stretched 1.5 to 4 times and air-entangled inelastic fibers, the knitted structure is a double-sided knitted structure, and the elastic fibers are polyurethane elastic fibers. It is characterized in that the inelastic fibers are thermoplastic synthetic fibers or recycled fibers.

Patent No. 5631528

However, in the stretchable knitted fabric knitted only using air-entangled composite yarns disclosed in Patent Document 1, the edges (cut edges) are unlikely to unravel even after repeated wearing and washing. There was a possibility that it would not be possible. In particular, when such a stretchable knitted fabric is repeatedly worn and washed as underwear such as an undershirt, the washing resistance may not be sufficiently guaranteed.

The present invention has been developed in view of the above-mentioned problems of the prior art, and its purpose is to provide an undergarment with a knitted fabric on the edge that is used as is without processing the cutting area. It is an object of the present invention to provide a textile product whose edges (cut edges) are less likely to unravel even after repeated wearing and washing.

In order to achieve the above object, the textile product according to the present invention takes the following technical measures.
That is, the textile product according to the present invention is a textile product that has a knitted fabric at the edge that is used as is without processing the cut portion, and the knitted fabric includes inelastic fibers A and elastic fibers A. This is a knitted fabric including a course in which is plated and knitted, and a course in which non-elastic fiber B and elastic fiber B are plated and arranged adjacent to the course, and is expressed by the following formula (A). When the synthetic cover factor of elastic fiber A and the elastic fiber A is synthetic CF1, and the synthetic cover factor of the inelastic fiber B and the elastic fiber B represented by the following formula (B) is synthetic CF2, 0 .9≦Synthetic CF1/Synthetic CF2≦1.10.

・Formula (A)
Combined CF1=1/L1×SQR[(1/S1)+1/{(5905.4/D1)×Df1}]
L1: Loop length of inelastic fiber A [cm]
S1: Fineness of inelastic fiber A [British cotton count]
D1: Fineness of elastic fiber A [dtex]
Df1: Draft rate = yarn feeding speed of elastic fiber A during knitting of knitted fabric / yarn feeding speed of inelastic fiber A・Formula (B)
Combined CF2=1/L2×SQR [(1/(5905.4/S2)+1/{(5905.4/D2)×Df2}]
L2: Loop length of inelastic fiber B [cm]
S2: Fineness of inelastic fiber B [dtex]
D2: Fineness of elastic fiber B [dtex]
Df2: Draft rate = yarn feeding speed of elastic fiber B / yarn feeding speed of inelastic fiber B during knitting

Preferably, the inelastic fibers A are synthetic fibers or semi-synthetic fibers.
Furthermore, preferably, the inelastic fiber A can be configured to be a multifilament.
Furthermore, it is preferable that the inelastic fiber B is a synthetic fiber and a multifilament.
Furthermore, preferably, the knitted fabric can be configured to be a smooth knit.

According to the present invention, with respect to textile products such as underwear that have knitted fabrics on the edges that are used as they are without being treated at the cut points, the edges (cut edges) can be used even after repeated wearing and washing. ) can provide textile products that are less likely to unravel.

It is a figure showing an example, a comparative example, evaluation, etc. in an embodiment of the present invention. It is a figure for explaining the test fabric sample of the washing raveling resistance test. FIG. 2 is a diagram for explaining a test method (JIS L-1930 C4N method) in a washing and unraveling resistance test. It is an organization chart of the smooth knitting in the example in embodiment of this invention.

Hereinafter, as an embodiment of the present invention, an undershirt (for example, an undershirt shown in FIG. 2(A) 100). Note that the textile product according to the present invention is not limited to underwear such as undershirts, but also textile products that have a knitted fabric on the edge that is used as is without processing the cut part. It doesn't matter if it is.

In addition, in the following, there is no need to distinguish between a course in which inelastic fibers A and elastic fibers A are plated and a course in which inelastic fibers B and elastic fibers B are plated. is the loop length L1 of inelastic fiber A and the loop length L2 of inelastic fiber B as L, the fineness S1 of inelastic fiber A and the fineness S2 of inelastic fiber B as S, the fineness D1 of elastic fiber A and the elasticity Assuming that the fineness D2 of the fiber B is D, the draft rate Df1 (the feeding speed of the elastic fiber A during knitting of the fabric/the feeding speed of the inelastic fiber A) and the draft rate Df2 (the feeding speed of the elastic fiber B during the knitting of the knitted fabric) Yarn speed/yarn feeding speed of inelastic fiber B) may be expressed as Df.

[Characteristics of textile products]
This textile product has a knitted fabric at the edge that is used as is without processing the cutting part, and this knitted fabric has a course in which inelastic fibers A and elastic fibers A are plated and knitted, It is knitted with a knitted fabric including a course arranged adjacent to this course and in which inelastic fibers B and elastic fibers B are plated. This textile product is suitable for use in garments such as undershirts with uncut specifications, and is made of a horizontally knitted fabric that has an anti-fray function. (elastic fibers, for example polyurethane) and other yarns (inelastic fibers, for example synthetic fibers or semi-synthetic fibers), and the heat-sealable elastic yarns are melted by heat-setting processing. This is a knitted fabric with an anti-fray function. In addition, when knitting the knitted fabric, the heat-fused elastic yarn and other yarns are knitted by plating knitting (plating knitting) at an arbitrary draft rate.

What is characteristic is that the composite cover factor CF1 of inelastic fiber A and elastic fiber A expressed by the following formula (A) is combined with the inelastic fiber B expressed by the following formula (B). When the synthetic cover factor CF2 with elastic fiber B is 0.9≦synthetic CF1/synthetic CF2≦1.10. Here, the composite cover factors (composite CF1 and composite CF2) are defined as shown in the following formulas (A) and (B).

・Formula (A)
Combined CF1=1/L1×SQR[(1/S1)+1/{(5905.4/D1)×Df1}]
L1: Loop length of inelastic fiber A [cm]
S1: Fineness of inelastic fiber A [British cotton count]
D1: Fineness of elastic fiber A [dtex]
Df1: Draft rate = yarn feeding speed of elastic fiber A during knitting of knitted fabric / yarn feeding speed of inelastic fiber A・Formula (B)
Combined CF2=1/L2×SQR [(1/(5905.4/S2)+1/{(5905.4/D2)×Df2}]
L2: Loop length of inelastic fiber B [cm]
S2: Fineness of inelastic fiber B [dtex]
D2: Fineness of elastic fiber B [dtex]
Df2: Draft rate = yarn feeding speed of elastic fiber B / yarn feeding speed of inelastic fiber B during knitting

Normal CF (cover factor) is defined as the ratio of the area covered by knitting yarn to the total area occupied by one loop in a knitted fabric, and is generally defined as the loop length (cm ) is L, and constant weight count (cotton count) is S, it is expressed by 1/L×SQR (1/S). As described above, in the textile product according to the present invention, inelastic fibers and elastic fibers are plated at an arbitrary draft rate Df (draft rate Df = yarn feeding speed of elastic fibers / yarn feeding speed of inelastic fibers). The knitted fabric is knitted. More specifically, the textile product according to the present invention includes a course in which inelastic fibers A and elastic fibers A are plated and knitted at a draft rate Df1, and inelastic fibers B and elastic fibers B arranged adjacent to this course. is knitted with a knitted fabric including a plating-knitted course with a draft rate Df2. Therefore, instead of the general cover factor expressed as 1/L x SQR (1/S), in addition to the (thread) thickness of the inelastic fiber (here, constant weight count (cotton count) S), The thickness of the elastic fiber (here, the decitex count [dtex] D) and the ratio of the yarn feeding speed of the elastic fiber to the yarn feeding speed of the inelastic fiber during knitting the knitted fabric ( The synthetic cover factors (synthetic CF1 and synthetic CF2) expressed by the above-mentioned formulas (A) and (B) taking into account the draft rate Df, which is the elastic fiber yarn feeding speed/inelastic fiber yarn feeding speed) The applicant has further discovered that the ratio of this synthetic cover factor is synthetic CF1/synthetic CF2 (the ratio of synthetic CF1 to synthetic CF2, the ratio of synthetic CF1 to synthetic CF2, the relative value of synthetic CF1 with respect to synthetic CF2) Washing resistance is within a certain range (0.9≦Synthetic CF1/Synthetic CF2≦1.10). They have found that it is particularly preferable (the edges (cut edges) are less likely to unravel even after repeated wearing and washing).

Preferably, the inelastic fibers A are synthetic fibers (nylon, polyester, etc.) or semi-synthetic fibers (rayon, etc.). More preferably, the inelastic fiber A can be configured to be a multifilament (polyester filament, etc.). More preferably, the inelastic fiber B is a synthetic fiber and can be constructed as a multifilament (polyester filament, nylon filament, etc.). More preferably, this knitted fabric can be configured to be a smooth knit.

[Manufacture of textile products]
Milling knitting ( 1 x 1 rubber knit) or smooth knit (the organization chart is shown in Figure 4) A knitted fabric with two rubber knits facing each other (back-to-back), both sides of which are visible only on the outer fabric; also known as interlock knitting, double-sided knitting. Examples 1 to 5 (Examples 1 to 3 were milled, Examples 4 to 5 were smooth knitted) and Comparative Examples 1 to 2 (all comparative examples were milled) were produced. More specifically, in Example 1, for example, using an 18-gauge circular knitting machine, a 60-count rayon yarn (inelastic fiber A) and a polyurethane yarn of 33 dtex (elastic fiber A) were knitted with a draft rate of 2. A course of milling knitting structure was knitted under the conditions of .044, and the draft rate was determined by plating and knitting polyester (multifilament) yarn 90 dtex (inelastic fiber B) and polyurethane yarn 33 dtex (elastic fiber B) by placing them adjacent to this course. A course of milling knitting structure was knitted under the conditions of 2.044. The knitted fabric knitted in this way is set on a setting machine and heat-treated at 170°C for 50 seconds as a presetting process, then set again on the setting machine and heat-treated at 120°C for 5 seconds as a final setting process to complete the synthesis. A milled knitted fabric with a cover factor ratio (synthetic CF1/synthetic CF2) of 1.04 was obtained. Regarding other Examples and Comparative Examples, the composition of the inelastic fibers A and B (inelastic yarns A and B), the composition of the elastic fibers A and B (elastic yarns A and B), the knitting structure and the draft rate Df (Df1 , Df2) are different as shown in FIG. 1, and other manufacturing conditions are the same as in Example 1.

[Textile product evaluation: washing fraying resistance test]
As a test fabric sample for the washing fraying resistance test, the undershirt 100 shown in FIG. ) is prepared, as shown in FIG. 2(B), with a short side of 10 cm x long side of 30 cm, with the long side direction forming a constant angle (approximately 45 degrees) with the course direction of the stitches.

The test fabric samples prepared in this way before the washing fraying resistance test were washed with a weak alkaline detergent (per 1 liter of water) using a home-use pulsator-type fully automatic washing machine according to the procedure compliant with the JIS L1930 CN4 method shown in Figure 3. 0.7 g) and hang dry the test fabric samples after washing. Such washing and drying operations are repeated 10 times to obtain test fabric samples (test fabric samples of Examples 1 to 3 and comparative examples 1 to 3) after washing fraying resistance test.

Then, the degree of fraying on the long side of the test fabric sample after the washing fraying resistance test was evaluated based on the following criteria by visually counting the number of fluffs of 1 mm or more sticking out in 5 cm of the long side of the test fabric sample. .
○: The number of protruding fluffs of 1 mm or more is less than 20 pieces per 5 cm. ×: The number of protruding fluff pieces of 1 mm or more is 60 pieces or more per 5 cm.

As shown in FIG. 1, Examples 1 to 5 in which the synthetic cover factor ratio (synthetic CF ratio = synthetic CF1/synthetic CF2) is within a certain range (0.9≦synthetic CF1/synthetic CF2≦1.10) The degree of fraying on the long side of the test fabric sample is indicated by ○, and Comparative Examples 1 and 2 whose synthetic cover factor ratio (synthetic CF ratio = synthetic CF1/synthetic CF2) is not within this specific range are not tested. The degree of fraying on the long side of the fabric sample is indicated by ×, and the synthetic cover factor ratio (synthetic CF ratio = synthetic CF1/synthetic CF2) is within a certain range (0.9≦synthetic CF1/synthetic CF2≦ 1.10), the washing resistance is particularly favorable (the edges (cut edges) are unlikely to unravel even after repeated wearing and washing).

Furthermore, for the evaluation of the washing fraying resistance test, instead of the number of fuzz sticking out of 1 mm or more on the long side 5cm of the test fabric sample after the washing fraying resistance test mentioned above, the length of the test fabric sample after the washing fraying resistance test was It may be the number of stitches on the side that no longer forms loops per a certain number of loops. For example, visually check the number (X) of loops that no longer form for a certain number of loops (50 loops, 100 loops, 200 loops, etc., and let us call it Y) on the long side of the test fabric sample after the washing fraying resistance test. and calculate the fraying rate R=X/Y×100 (%). In Examples 1 to 5, where the synthetic cover factor ratio (synthetic CF ratio = synthetic CF1/synthetic CF2) is within a certain range (0.9≦synthetic CF1/synthetic CF2≦1.10), this fraying rate R is 30%. In Comparative Examples 1 and 2, which are as follows and the synthetic cover factor ratio (synthetic CF ratio = synthetic CF1/synthetic CF2) is not within this specific range, the fraying rate R is greater than 85%. In this way, even with such fraying rate R, the synthetic cover factor ratio (synthetic CF ratio = synthetic CF1/synthetic CF2) can be resistant within a certain range (0.9≦synthetic CF1/synthetic CF2≦1.10). It can be seen that the washability is particularly favorable (the edges (cut edges) are unlikely to unravel even after repeated wearing and washing). Thus, the textile product according to the present invention can be said to be a textile product that falls within the technical range of preferably having a fraying rate R of 85% or less, more preferably 30% or less.

As described above, according to the textile product according to the present embodiment, there is a course in which inelastic fibers A and elastic fibers A are plated, and inelastic fibers B and elastic fibers B are arranged adjacent to this course. By introducing a new index called the ratio of synthetic cover factor (synthetic CF) for knitted fabrics that include plating-knitted courses, it is possible to reduce knitted fabrics that are used as-is without processing the cut points. Regarding textile products such as underwear having edges, it is possible to provide textile products whose edges (cut edges) are less likely to unravel even after repeated wearing and washing.

It should be noted that the embodiments disclosed herein are illustrative in all respects and should not be considered restrictive. The scope of the present invention is indicated by the claims rather than the above description, and it is intended that all changes within the meaning and range equivalent to the claims are included.

The present invention is suitable for textile products such as underwear that have knitted fabrics at the edges that are used as-is without processing the cut portions, and even after repeated wearing and washing, the edges (cut edges) This is particularly suitable in that it is less likely to unravel.

100 Undershirts 110 Areas where fraying is a particular problem due to repeated washing.

Claims (5)

A textile product having a knitted fabric on the edge that is used as is without processing the cutting part,
The knitted fabric includes a course in which inelastic fibers A and elastic fibers A are plated and knitted, and a course that is arranged adjacent to the course and in which inelastic fibers B and elastic fibers B are plated in the knitted fabric. can be,
The synthetic cover factor of the inelastic fiber A and the elastic fiber A expressed by the following formula (A) is defined as synthetic CF1,
When the synthetic cover factor of the inelastic fiber B and the elastic fiber B expressed by the following formula (B) is synthetic CF2,
0.9≦Synthetic CF1/Synthetic CF2≦1.10
It is characterized by
A textile product , wherein the inelastic fiber A is a rayon yarn, and the inelastic fiber B is a polyester multifilament yarn .
・Formula (A)
Synthesis CF1=1/L1×SQR[(1/S1)+1/[(5905.4/D1)×Df1]]
L1: Loop length of inelastic fiber A [cm]
S1: Fineness of inelastic fiber A [British cotton count]
D1: Fineness of elastic fiber A [dtex]
Df1: Draft rate = yarn feeding speed of elastic fiber A during knitting of knitted fabric / yarn feeding speed of inelastic fiber A・Formula (B)
Combined CF2=1/L2×SQR[(1/(5905.4/S2)+1/[(5905.4/D2)×Df2]]
L2: Loop length of inelastic fiber B [cm]
S2: Fineness of inelastic fiber B [dtex]
D2: Fineness of elastic fiber B [dtex]
Df2: Draft rate = yarn feeding speed of elastic fiber B / yarn feeding speed of inelastic fiber B during knitting The inelastic fiber A is a nylon/polyester yarn instead of the rayon yarn,
The textile product according to claim 1 , characterized in that the inelastic fiber B is a nylon/polyester yarn instead of the polyester multifilament yarn . The inelastic fiber A is a nylon multifilament yarn instead of the rayon yarn,
The textile product according to claim 1 , wherein the inelastic fiber B is a nylon multifilament yarn instead of the polyester multifilament yarn . The textile product according to claim 1 or 2 , wherein the knitted fabric is milled . The textile product according to claim 3 , wherein the knitted fabric is smooth knitted.

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