JP2001254240A - Moisture-absorbing/releasing exothermic composite yarn and material using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composite yarn to be used in clothing requiring thermal insulation, and to provide a material using the subject composite yarn. SOLUTION: This moisture-absorbing/releasing exothermic composite yarn is obtained by double covering in S-twist and Z-twist fashion of 22 dtex/12f polyester filament yarns on blended yarns with a fineness of cotton count 40/- comprising 30 wt.% of acrylate-based moisture-absorbing/releasing exothermic fiber and 70 wt.% of polyester fiber so as to be 75:25 in the blend ratio off blended yarns/double covering yarns. The other objective material comprising the above composite yarn is also provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moisture-absorbing and releasing heat-generating composite yarn used for clothes requiring heat retention and a material using the moisture-absorbing and releasing heat-generating composite yarn.

[0002]

2. Description of the Related Art Conventionally, a core-sheath type composite spun yarn using a fiber containing a highly moisture-absorbing (exothermic) staple for a core portion and using a hydrophobic staple or a hydrophobic filament for a sheath portion has been used. Woven or knitted fabric is disclosed. (JP-A-9-31796)
issue).

[0003]

However, this core-sheath type composite spun yarn contains a highly heat-absorbing and heat-generating staple in the core portion, and the sheath portion has a mixing ratio of 50% to 90% in order to completely cover the staple. Is a structure using a hydrophobic staple or filament.

Accordingly, the heat-absorbing heat-generating staple of the core portion hardly absorbs moisture around the core-sheath composite spun yarn.
The original performance cannot be fully exhibited. Furthermore, since the sheath is made of hydrophobic staples or filaments, it has no hygroscopicity or water absorption, and the performance of the core cannot be fully utilized.

[0005] Further, since this yarn is a core-sheath composite spun yarn spun in a spinning process, a highly hygroscopic (heat-generating) staple at the core and a hydrophobic staple at the sheath are provided. ,
Is weak in the entanglement of the hydrophobic filament, has a problem in the physical strength of the yarn, and when woven or knitted, pills and fluff are easily blown out. It cannot be used for mups).

[0006]

Accordingly, the present invention has the following arrangement in order to solve the above problems. That is, a moisture-absorbing / releasing heat-generating fiber composite yarn constituted by covering a filament yarn with a blended yarn (knot strength of 0.03 cN / dtex or more) containing an acrylate-based moisture-absorbing / releasing heat-generating fiber; The material is characterized by using at least a part of the heat release composite yarn.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the first aspect of the present invention, a filament yarn is coated on a blended yarn (knot strength of 0.03 cN / dtex or more) containing an acrylate-based moisture-absorbing / desorbing heat-generating fiber. It is a moisture-absorbing and releasing heat-generating composite yarn characterized by being ringed.

The knot strength is 0.0
If it is less than 3 cN / dtex, it is difficult to produce the moisture-absorbing and releasing heat-generating fiber composite yarn, and the moisture-absorbing and releasing heat-generating fiber composite yarn and the material intended by the present invention cannot be produced.

According to a second aspect of the present invention, a mixed spun yarn (knot strength of 0.03 cN / dtex or more) containing the acrylate-based moisture-absorbing / desorbing heat-generating fiber is added to 11 dtex.
2. The moisture-absorbing and releasing heat-generating yarn according to claim 1, wherein the yarn is double-covered S-twisted and Z-twisted filament yarns of up to 33 dtex.

[0010] The thickness of the covering yarn is 11 dtex.
The reason for ~ 33 dtex is that if the thickness is smaller than 11 dtex, the strength as a composite yarn is insufficient, and if the yarn is used to fabricate the fabric, the physical strength of the fabric is insufficient and pills and fluff are likely to occur.

[0011] Further, when it is larger than 33 dtex, the strength as a moisture-absorbing and releasing heat-generating fiber composite yarn is sufficient, but when fabric is made, the texture becomes hard, and when used as clothes, the feel is poor and the wearing feeling is poor.

[0012] A filament yarn is a monofilament yarn consisting of one fiber, a filament yarn consisting of several fibers,
Alternatively, it is a filament-processed yarn that imparts strain to the yarn and has both high properties and elasticity. In particular, if the material requires a texture, the filament processed yarn is more preferable.

The spun yarn is made of two filament yarns, S and Z.
The reason for double covering in twist is that if one filament yarn is covered, it will be covered in only one direction of S or Z twist, so the entanglement of the spun yarn and the filament yarn is weak, and On the other hand, since the filament yarn is shifted, a certain yarn strength cannot be obtained,
This is because stable dough properties are not obtained even if dough is produced.

According to a third aspect of the present invention, in the composite yarn containing the acrylate-based moisture-absorbing and releasing heat-generating fiber, the filament yarn is made of a polyester fiber, a nylon fiber, or an acrylic fiber. The moisture-absorbing and releasing heat-generating composite yarn according to any one of claims 1 to 2.

The three types of polyester fiber, nylon fiber and acrylic fiber each have a moisture absorption of 0.4%,
4.5%, 1.5 to 3.0% (at 20 ° C. and 65% RH)
Therefore, the moisture absorption / release properties of the moisture absorption / release heat-generating fiber in the blended yarn are easily exhibited. In particular, polyester fibers have almost no water absorption, and therefore are excellent in quick-drying properties.

Further, the polyester fiber and the nylon fiber have a high yarn strength of 0.5 to 1.0 cN / dtex, easily increase the physical strength of the fabric, and are particularly suitable for fabrics requiring high strength.

According to a fourth aspect of the present invention, in the composite yarn containing the acrylate-based moisture-absorbing and releasing heat-generating fiber, the blend yarn is 60 to 90% and the filament yarn is 10 to 4%.
The moisture-absorbing and releasing heat-generating composite yarn according to any one of claims 1 to 3, comprising 0%.

If the mixing ratio of the filament yarn is less than 10%, the physical strength of the heat-absorbing and releasing heat-generating fiber composite yarn becomes insufficient.

On the other hand, when the mixing ratio is more than 40%, the strength as a moisture-absorbing and releasing heat-generating fiber composite yarn is sufficient, but the texture becomes hard, and when used as clothes, the feel is poor and the wearing feeling is poor.

Further, the acrylate-based moisture-absorbing and heat-generating fiber contained in the blended yarn hardly absorbs moisture around the composite yarn, and cannot exhibit its inherent performance sufficiently. Therefore, it is necessary that the filament yarn double-covered in the S and Z twists comprises 10 to 40%, and the blend ratio of the blended yarn is suitably 60 to 90%.

According to a fifth aspect of the present invention, a blended yarn (knot strength of 0.03 cN / dtex or more) containing an acrylate-based moisture-absorbing and heat-generating fiber is covered with a filament yarn covered. It is a material characterized by using the moist heat composite yarn at least in part.

According to a sixth aspect of the present invention, the mixed spun yarn (knot strength of 0.03 cN / dtex or more) containing the acrylate-based moisture-absorbing / desorbing heat-generating fiber is added to 11 dtex.
It is a material characterized by using at least a part of a moisture-absorbing and releasing heat-generating composite yarn obtained by double-covering a filament yarn of ~ 33 dtex in S and Z twists.

According to a seventh aspect of the present invention, the filament yarn is made of polyester fiber, nylon fiber, or acrylic fiber in the moisture-absorbing and releasing heat-generating composite yarn. The material according to any one of the above.

According to claim 8 of the present invention, in the moisture-absorbing / desorbing heat-generating composite yarn, the blend yarn is 60 to 90%,
The material according to any one of claims 5 to 7, wherein the filament yarn comprises 10 to 40%.

In the above blended yarn, the fiber blended with the acrylate-based moisture absorbing / releasing heat generating fiber is polyester fiber, nylon fiber, cotton fiber, acrylic fiber, cotton fiber, and rayon fiber. What is important as the fiber to be blended is that the fiber must be easy to blend with the acrylate-based moisture-absorbing and desorbing heat-generating fiber and must not impair the heat-absorbing and desorbing heat-generating properties.

The blend ratio of the blended yarn is such that the blend ratio of the acrylate-based moisture-absorbing / desorbing heat-generating fiber is 10 to 50%, and the other fibers are 50 to 90%. I do.

If the acrylate-based moisture-absorbing and releasing heat-generating fiber is less than 10%, the moisture-absorbing and heat-generating effects are difficult to understand as a fabric. Becomes weaker and the knot strength is 0.0
It is less than 3 cN / dtex, resulting in insufficient physical strength of the fabric.

Furthermore, the thickness of the blended yarn is 20 /-
It is characterized by having a thickness of 60 /-. If this blended yarn is thinner than cotton count 60 /-, the knot strength is 0.03c.
N / dtex, the physical strength of the fabric is insufficient, and if the cotton count is larger than 20 /-, the knot strength is 0.03.
cN / dtex or more, and although the yarn strength is high, it becomes a hard composite yarn. As a result, the texture as the fabric is hard,
When used as clothing, it feels bad and wears poorly.

The number of twists of a spun yarn containing an acrylate-based moisture-absorbing and releasing heat-generating fiber is preferably 15 to 25 times / inch in consideration of the physical strength of the yarn and the texture of the fabric.

Further, the number of twists of the S and Z twists of the filament yarn to be double-covered with respect to the spun yarn needs to be 3 to 30 turns / inch in consideration of physical strength and texture. , 5 to 15 times / inch.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given of an embodiment of a moisture-absorbing and heat-generating composite yarn and a material using the moisture-absorbing and releasing heat-generating composite yarn according to the present invention.

In the following examples, a knitted fabric with a twill structure is used for comparison with the conventional example. Of course, a knitted fabric with a twill structure is selected for comparison, and a knitted fabric of a generally known textile product is used. Material forms (for example, fabrics such as plain weave, twill weave, satin weave, knits such as circular knit, weft knit, warp knit, non-woven fabric, etc.) can be applied.

Example 1 A 22dtex / 12f polyester filament yarn was mixed with a 40 / -cotton thick yarn containing 30% of an acrylate-based moisture-absorbing and releasing heat-generating fiber and 70% of a polyester fiber. , S and Z twist, and the blending ratio is blended yarn / double covering yarn =
75/25 is a knitted fabric with a moisture-absorbing and releasing heat-generating fiber composite yarn constituted as 75/25 and the moisture-absorbing and releasing heat-generating composite yarn.

(Example 2) A mixed yarn of 40 / -cotton thick containing 30% of acrylate-based moisture-absorbing and releasing heat-generating fiber and 70% of polyester fiber, and a polyester filament processed yarn of 33dtex / 36f Of a moisture-absorbing / desorbing heat-generating fiber composite yarn composed of double-covered S and Z twists and having a blending ratio of blended yarn / double covering yarn = 70/30, and a knitted fabric having an air-woven structure composed of the moisture-absorbing / release heat-generating composite yarn It is.

Example 3 An 11 dtex polyester monofilament yarn was added to a 30 / -cotton thick blended yarn containing 50% acrylate-based moisture-absorbing and releasing heat-generating fiber and 50% polyester fiber. And double twisting with Z twist, and the blending ratio is blended yarn / double covering yarn = 90
/ 10 is a knitted fabric having a weave structure composed of the moisture-absorbing and heat-generating fiber composite yarn and the moisture-absorbing and heat-generating composite yarn.

(Example 4) Cotton count 30 containing 10% of an acrylate-based moisture-absorbing and releasing heat-generating fiber and 90% of an acrylic fiber
A / d-thick blended yarn is double-covered with 33 dtex / 12f acrylic filament yarn in S and Z twists, and the blending ratio is blended yarn / double covering yarn = 85/1.
5 is a knitted fabric having an air-absorbing and releasing heat-generating fiber composite yarn constituted as No. 5 and a moisture-absorbing and releasing heat-generating composite yarn.

(Example 5) Polyester filaments of 165 dtex / 48f were used on the surface, and 30% of acrylate-based moisture-absorbing and releasing heat-generating fibers and 70% of polyester fibers were used.
22dte to a 40 /-cotton blend yarn containing
x polyester filament is double-covered in S and Z twists, and the moisture-absorbing / desorbing heat-generating fiber composite yarn having a blend ratio of blended yarn / double covering yarn = 75/25 and the moisture-absorbing / desorbing heat-generating composite yarn on the back side This is a knitted fabric of a reversible sheeting structure used in Example 1.

(Comparative Example 1) Cotton count 4 containing 5% of an acrylate-based moisture-absorbing and releasing heat-generating fiber and 95% of a polyester fiber.
A 22dtex / 12f polyester filament processed yarn is double-covered in S and Z twists on a blended yarn having a thickness of 0 /-, and a blended yarn composed of a composite yarn having a blending ratio of 75/25 is a blended yarn / double covering yarn. It is a knitted fabric.

(Comparative Example 2) A polyester monofilament yarn of 11 dtex was added to a mixed yarn having a cotton count of 40 /-containing 60% of an acrylate-based moisture-absorbing and releasing heat-generating fiber and 40% of a polyester fiber. And Z-twisting, and the blending ratio is blended yarn / double covering yarn = 80
/ 20 is a knitted fabric with a twill fabric consisting of a composite yarn.

(Comparative Example 3) 55 dtex / 17f polyester filament yarn was added to a 40 / -cotton thick blended yarn containing 30% of an acrylate-based moisture absorbing / releasing heat-generating fiber and 70% of a polyester fiber. , S and Z twist, and the blending ratio is blended yarn / double covering yarn =
It is a knitted fabric with a twill fabric consisting of 50/50 composite yarn.

(Comparative Example 4) An 11 dtex polyester monofilament yarn was added to a 40 /-cotton thick blend yarn containing 30% of an acrylate-based moisture-absorbing and releasing heat-generating fiber and 70% of a polyester fiber. Single covering with twist, blend ratio is blended yarn / single covering yarn = 95 /
5 is a knitted fabric having an inlaid fabric composed of the composite yarn of No. 5.

(Comparative Example 5) A knitted fabric of a jersey structure comprising a blended yarn having a cotton count of 40 /-and containing 30% of an acrylate-based moisture-absorbing and releasing heat-generating fiber and 70% of a polyester fiber.

Physical strength, water-absorbing / drying properties, heat-absorbing / heat-generating properties by a wearing test, and sensory evaluation at that time were performed.

<Physical strength test>
JIS L 1095 method, burst test is JIS L 1
018 · A method (Mullen type method)
The evaluation was performed by the IS • L · 1076 • A method.

<Water Absorption Drying Test> Under environmental conditions of 20 ° C. and 65% RH, the drying rate of the knitted fabric after the fabric absorbed 1 cc of distilled water was measured and evaluated after 30 minutes and 60 minutes. .

<Hygroscopic heat generation and sensory evaluation> In a climate chamber, when walking at a speed of 5.0 (km / h) for 20 minutes using a treadmill under an environmental condition of 15 ° C. and 50% RH. The temperature and humidity in the clothes were measured to evaluate the heat absorption and heat generation of the knitted fabric. At this time, a feeling of wearing was also heard at the same time, and a sensory evaluation was performed. However, the test was performed by 10 subjects, and the average value of the 10 subjects was used as the result of the sensory value.

Table 1, Table 2, Table 3, and Table 4 show the results of physical strength, water absorption / drying property, heat absorption / heating property by a wear test, and sensory evaluation, respectively.

[0048]

[Table 1] <Physical strength>

From the results of the physical properties shown in Table 1, Examples 1 to 5 were obtained.
Means that the tensile strength of all composite yarns is 3.5N or more,
The burst strength is 911 (KPa) or more, and the pilling is all quaternary or more. These materials are said to keep this level of physical strength by double covering S and Z twists around the blended yarn containing the acrylate-based moisture-absorbing and releasing heat-generating fiber with filament yarn. Conceivable.

On the other hand, the results of Comparative Examples 2, 4, and 5 show that the tensile strength of the composite yarn is 1.8 N or less, the burst strength is about 400 to 600, and pills are formed even in pilling. It turns out that the material is easy.

As a cause, in Comparative Example 2, the mixing ratio of the acrylate-based moisture-absorbing and heat-generating fiber having a low fiber strength contained in the blended yarn was as high as 60%. In Comparative Examples 4 and 5, the filament yarns are considered to be due to single covering, and lack of strength due to lack of covering.

[0052]

[Table 2] <Water absorption drying property>

From the water-absorbing drying properties in Table 2, in Examples 1 to 5, the drying rate (%) is 55% or more after 30 minutes, and 87% or more after 60 minutes. On the other hand, the drying rates (%) of Comparative Examples 2 and 3 were at the maximum of 65% even after 60 minutes, indicating that it was difficult to dry.

Comparative Example 2 was found to have a high mixing ratio of the acrylate-based moisture-absorbing and desorbing heat-generating fibers contained in the blended yarn of 60%, and Comparative Example 3 was a double twist in S and Z twists. This is presumably because the mixing ratio of the covering filament yarn is as high as 50%, and the acrylate-based moisture-absorbing / desorbing heat-generating fiber makes it difficult to release moisture once absorbed.

[0055]

[Table 3] <Hygroscopic heat generation>

In the heat generation by moisture absorption in Table 3, Examples 1 to
In No. 5, the temperature in the clothes is 26.3 ° C. or more, and the humidity in the clothes is also suppressed to 78% RH or less.

On the other hand, in Comparative Examples 1 and 3, the temperature in the clothes was lower by 1 ° C. or more, and the humidity in the clothes was 10% RH.
This is a high result.

In Comparative Example 1, the acrylate-based moisture-absorbing and heat-generating fiber contained in the blended yarn had a low mixing ratio of 5%, and the characteristics were not utilized.

In Comparative Example 3, since the blending ratio of the filament yarns double-covered in S and Z twists was as high as 50%, the acrylate-based moisture absorbing / releasing heat-generating fibers in the blended yarn were less likely to absorb moisture and generate heat. This is probably because they have not been able to demonstrate.

[0060]

[Table 4] <Sensory value by wear test>

The warmth, stuffiness, stickiness, texture (feel), and comprehensive evaluation of the sensory values in this wear test are as follows.

<Warmness> ：: Warm, ○: Slightly warm, Δ: Neither,
×: slightly cold <feeling of stuffiness> ◎: not stuffy, ○: slightly stuffy, Δ: slightly stuffy,
X: humid <feeling stickiness> ◎: not sticky, ○: not sticky, △: sticky ×: sticky <feel (feeling)> ◎: very good, ○: good, △: slightly bad, ×: bad <Comprehensive evaluation> ：: Very comfortable, ○: Comfortable, Δ: Slightly uncomfortable, ×: Uncomfortable.
In each of the items No. to No. 5, all items were rated as "good" or more, and the overall evaluation was very comfortable or comfortable.

On the other hand, Comparative Example 1 was not good in terms of wear, particularly in terms of heat generation and heat absorption such as warmth, stuffiness and stickiness, and Comparative Example 3 also had problems in heat generation and moisture absorption. Furthermore, the texture (feel) is poor and the overall evaluation is unpleasant.

As a cause, in Comparative Example 1, the mixture ratio of the acrylate-based moisture-absorbing and heat-generating fiber was as low as 5%, and the moisture-absorbing and heat-generating property was not utilized. Comparative Example 3 had a problem with the filament yarn double-covering in S and Z twists, and its mixing ratio was as high as 50%, and the acrylate-based moisture absorbing / releasing heat-generating fibers in the blended yarn were less likely to absorb moisture and generate heat. And that the filament yarn was too thick, 55 dtex, resulting in a hard texture and poor touch.

[0065]

According to the conventional materials, even though acrylate-based moisture-absorbing and desorbing heat-generating fibers are used, their performance cannot be sufficiently exhibited, or even if they can be exhibited, there is a problem in the physical strength of the yarn. When woven or knitted, pills are easily formed or fluff is easily blown out, so that it cannot be used for sportswear (for example, warm-up soots) that requires a particularly high level of physical strength.

Therefore, the material using the moisture-absorbing and releasing heat-generating composite yarn according to the present invention is a blended yarn containing acrylate-based moisture-absorbing and releasing heat-generating fiber (knot strength of 0.03 cN / dtex or more).
In addition, by using at least a part of a composite yarn in which a filament yarn is covered, the performance of the heat-absorbing and heat-generating fiber is sufficiently exhibited, the clothes are kept warm, and there is no feeling of stuffiness or stickiness, Is also good. Furthermore, it can also be used for sportswear (for example, warm-up shoes) which have excellent physical strength and require a high level of physical strength.

Claims (8)

[Claims] 1. A blended yarn containing an acrylate-based moisture-absorbing and releasing heat-generating fiber (knot strength of 0.03 cN / dtex or more),
A moisture-absorbing and releasing heat-generating composite yarn, wherein a filament yarn is covered. 2. A blended yarn containing the acrylate-based moisture-absorbing / desorbing heat-generating fiber (knot strength of 0.03 cN / dtex or more).
The filament yarn of 11 dtex to 33 dtex is S
2. The moisture-absorbing and releasing heat-generating composite yarn according to claim 1, wherein the composite yarn is a double-covered composite yarn of a twist and a Z twist. 3. The composite yarn containing an acrylate-based moisture-absorbing and releasing heat-generating fiber, wherein the filament yarn is made of polyester fiber, nylon fiber or acrylic fiber. 2. The moisture-absorbing and releasing heat-generating composite yarn according to claim 1. 4. The composite yarn containing the acrylate-based moisture-absorbing and releasing heat-generating fiber, wherein the blend yarn comprises 60 to 90% and the filament yarn comprises 10 to 40%. The heat-absorbing / desorbing heat-generating composite yarn according to any one of the preceding claims. 5. A mixed spun yarn (having a knot strength of 0.03 cN / dtex or more) containing an acrylate-based moisture-absorbing and releasing heat-generating fiber,
A material characterized by using at least a part of a moisture-absorbing and releasing heat-generating composite yarn obtained by covering a filament yarn. 6. A blended yarn containing the acrylate-based moisture-absorbing / desorbing heat-generating fiber (knot strength of 0.03 cN / dtex or more).
The filament yarn of 11 dtex to 33 dtex is S
And at least a part of a moisture-absorbing and releasing heat-generating composite yarn double-covered in a Z twist.
The described material. 7. The composite yarn according to claim 5, wherein the filament yarn is made of a polyester fiber, a nylon fiber, or an acrylic fiber.
7. The material according to any one of items 1 to 6. 8. The material according to claim 5, wherein in the moisture-absorbing and releasing heat-generating composite yarn, the blend yarn comprises 60 to 90%, and the filament yarn comprises 10 to 40%. .