JP2003313743A - Fabric for cushioning material and cushioning material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fabric for a cushioning material having soft touch feeling, retaining moderate resilient feeling and cushionability even if used for a long period of time, causing no deflection and scarcely causing loss of bulkiness, and highly excellent in elastic recovery of elongation and stress retentivity, and to provide the cushioning material. <P>SOLUTION: The fabric for the cushioning material is such one that at least warps are constituted of latently crimp-developable polyester fiber monofilaments each composed of two or more kinds of polyester components, at least one of them being polytrimethylene terephthalate. In this fabric, the stress retention after held for 15 min under an elongation of 10% in the warp direction is ≥80%, and the fabric width is ≤330 mm. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a chair, a sofa,
The present invention relates to a woven fabric for a cushion material such as a bed, a hammock, a car seat, and a cloth belt material used as a planar spring member under a seat of an automobile. More specifically, it has a soft texture, excellent elongation recovery and stress retention, so it is durable and resilient, does not have slack, is dimensionally stable, and fits your body's movements for followability. And a fabric for a cushioning material, which is excellent in abrasion resistance and excellent in wear resistance.

[0002]

2. Description of the Related Art Metal springs, urethane foams and the like are used for cushion materials such as chairs, sofas and beds. However, although the metal spring has excellent resilience durability and dimensional stability, due to the hardness peculiar to metal, soft and comfortable cushioning properties cannot be obtained, and the seating comfort and sleeping comfort are poor. On the other hand, in the case of urethane foam, the initial compression is hard, and the cushioning property is poor because it shows a unique compression characteristic that it suddenly sinks afterwards, and the feeling of bottom collision is large, the air permeability is poor, and the cushioning material is easy to get damp. Often not liked. Further, since the polymer is soft and foamed, there is a drawback that the density must be increased in order to improve the resilience against compression.

For the surface material of chairs, sofas, beds, etc.,
Cloths using bulky processed yarn of polyamide fiber or polyester fiber are often used. Since the skin material is a portion that comes into direct contact with the body, it needs to have a soft texture as a cloth and not to impair the cushioning properties required for chairs, sofas, beds and the like. In order to follow the movement of the cushion material, the skin material is also required to have appropriate softness, extensibility, reboundability, and flexure, and to have excellent dimension retention. Therefore, as a fabric for the skin material, a fabric obtained by covering the polyurethane fiber with a raw yarn of polyamide fiber or polyester fiber, a yarn covered with a bulky processed yarn or a twisted yarn, and imparting appropriate elongation and good return It is used.

However, unlike a general clothing, a skin material for a chair or the like has a large total fineness of a yarn to be used and also has a large basis weight, and therefore, a fabric is obtained by mixing polyurethane fiber as a core yarn in a few% of constituent fibers. As a result, there is little contribution to the good growth and return. As a result, softness, elongation, and recovery are not sufficient even when polyurethane fibers are mixed. For the above reasons, the texture to the human body is good, the holding property, that is, the performance of fitting the body and easily following the movement of the body is excellent, and the cushion material is deformed with good followability, It is difficult to obtain a fabric having a good dimension retention without flexing even after repeated use, and it has been strongly desired to develop a fabric for a skin material which is excellent in these properties.

In many cases, chairs and the like are manufactured by using urethane foam or the like having high elasticity as a cushioning material, and covering a skin material such as a woven or knitted fabric on the cushioning material. However, in order to promote recycling for protection of the global environment in recent years, there is an increasing demand for deurethane treatment for chairs for homes, offices, vehicles and the like. Therefore, without the cushioning material of urethane foam, the sheet is made up of only the skin material that has high elasticity and cushioning property, good recovery when deformed, and durability against bending and settling. There is an increasing demand for commercialization.

[0006] The applicant of the present invention has previously filed Japanese Patent Application Laid-Open No. 2002-522.
In Japanese Patent Laid-Open No. 73-73, it was proposed that a narrow woven fabric using polytrimethylene terephthalate multifilament yarn is excellent as a cushioning material, but even better one is required depending on the use.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and has a soft texture and retains an appropriate elastic feeling and cushioning property even during long-term use. It is an object of the present invention to provide a cushioning fabric and a cushioning material which are not easily sagging, and are excellent in elongation recovery and stress retention.

[0008]

Means for Solving the Problems As a result of intensive studies for solving the above problems, the present inventors have found that the above problems can be solved by using a specific fiber material.
The present invention has been reached. That is, the present invention is as follows. (1) A woven fabric for cushion material, which comprises at least a warp composed of a latent crimp-expressing polyester fiber monofilament yarn composed of two or more kinds of polyester components, at least one of which is polytrimethylene terephthalate. 1 at 10% elongation in the direction
A woven fabric for a cushion material, which has a stress retention rate of 80% or more after being retained for 5 minutes and a fabric width of 330 mm or less. (2) The woven fabric for cushion material according to (1), wherein the elastic recovery rate at 10% elongation is 85% or more in the warp direction of the woven fabric.

(3) For a cushioning material in which a warp and / or a weft is composed of a latent crimp-expressing polyester fiber monofilament yarn composed of two or more polyester components, at least one of which is polytrimethylene terephthalate A woven fabric for a cushion material, which has a stress retention rate of 80% or more after being retained under 10% elongation for 15 minutes in a warp direction and a weft direction, and has a fabric width of more than 330 mm. (4) 10% in the warp and weft directions of the fabric
The woven fabric for cushion material according to (3), which has an elastic recovery rate of 85% or more when stretched.

(5) The latent crimp-developing polyester fiber monofilament yarn is 0.05 to 0.40 (dl /
The fabric for a cushioning material according to any one of (1) to (4), characterized in that two kinds of polytrimethylene terephthalate having a difference in intrinsic viscosity of g) are compounded side by side with each other. . (6) A cushioning material constituted by using the woven fabric according to any one of (1) to (5) above.

The cushion fabric of the present invention is an alternative to conventional cushion materials such as chairs, sofas and beds. It is optimal to form the cushion material only by the cushion material woven fabric without using the conventional skin material or cushion material. However, in the cushion material woven fabric of the present invention, a known skin material or other cushion material is used. For example, polyurethane foam, metal spring, etc. may be combined. In the case of a narrow width fabric having a width of 330 mm or less, the narrow width fabric is used alone, a plurality of the narrow width fabrics are arranged and used in a single layer or by laminating it, or as a fabric, it is combined with warp and weft, A knit structure such as a knit can be used.

The latent crimp-developing polyester fiber in the present invention is composed of two or more kinds of polyester components (specifically, many are joined in a side-by-side type or an eccentric core-sheath type). Yes, heat treatment causes crimping. When it is composed of two types of polyester components, the composite ratio of the polyester components is preferably 70/30 to 30/70, more preferably 60/40 to 40/60, in mass%. When they are joined to the side-by-side type or the eccentric core-sheath type, the joint surface shape (there is a straight or curved shape) is not limited.

The latent crimp developable polyester fiber of the present invention is characterized in that at least one component is polytrimethylene terephthalate. Examples of other components include polyesters different from the first component, such as polytrimethylene terephthalate, polyethylene terephthalate, polybutylene terephthalate, and the like.

The polymer combination is polytrimethylene terephthalate (polyester containing terephthalic acid as a main dicarboxylic acid and 1.3-propanediol as a main glycol component, glycols such as ethylene glycol and butanediol, and isophthalic acid). ,
Dicarboxylic acids such as 2.6-naphthalenedicarboxylic acid may be copolymerized. In addition, other polymers, matting agents, flame retardants,
A combination of antistatic agents, additives such as pigments) and polytrimethylene terephthalate, polytrimethylene terephthalate and polyethylene terephthalate (terephthalic acid as the main dicarboxylic acid and ethylene glycol as the main glycol component) It is also possible to copolymerize glycols such as butanediol, isophthalic acid, dicarboxylic acids such as 2.6-naphthalene dicarboxylic acid, etc. Other polymers, matting agents, flame retardants, antistatic agents, pigments, etc. May be included.)
Polytrimethylene terephthalate and polybutylene terephthalate (polyester containing terephthalic acid as a main dicarboxylic acid and 1.4-butanediol as a main glycol component, glycols such as ethylene glycol and isophthalic acid, 2.6- You may copolymerize dicarboxylic acids, such as naphthalene dicarboxylic acid.
In addition, other polymers, matting agents, flame retardants, antistatic agents, additives such as pigments may be included) in combination. In particular, it is preferable to select and combine the polymers so that the polytrimethylene terephthalate is arranged inside the crimp when formed into fibers.

Among these, the combination of polytrimethylene terephthalate having an intrinsic viscosity difference is most suitable, but in addition to this, the combination of polytrimethylene terephthalate and copolymerized polytrimethylene terephthalate, polytrimethylene terephthalate (or copolymer A combination of polymerized polytrimethylene terephthalate) and polyethylene terephthalate (or a copolymerized polyethylene terephthalate), a combination of polytrimethylene terephthalate or a copolymerized polytrimethylene terephthalate and a polybutylene terephthalate (or a copolymerized polybutylene terephthalate) are preferable.

When composed of two types of polytrimethylene terephthalate having a difference in intrinsic viscosity, the difference in intrinsic viscosity between the two types of polytrimethylene terephthalate is 0.05 to 0.
It is preferably 40 (dl / g), more preferably 0.10 to 0.35 (dl / g), and most preferably 0.15 to 0.35 (dl / g). For example, when the intrinsic viscosity on the high viscosity side is selected from 0.70 to 1.30 (dl / g), the intrinsic viscosity on the low viscosity side is 0.50 to 0.50.
It is preferable to select from 1.10 (dl / g). The intrinsic viscosity on the low viscosity side is preferably 0.80 (dl / g) or more, more preferably 0.85-1.00 (dl / g),
Most preferably, it is 0.90 to 1.00 (dl / g). When the intrinsic viscosity difference is less than 0.05, latent crimps are hard to develop,
When it exceeds 0.40 (dl / g), melt spinning becomes difficult. The intrinsic viscosity of the composite fiber itself, that is, the average intrinsic viscosity is preferably 0.70 to 1.20 (dl / g), and 0.8
0 to 1.20 (dl / g) is more preferable, and 0.85 to
1.15 (dl / g) is the most preferable, and 0.90 to 1.
10 (dl / g) is more preferable.

The value of the intrinsic viscosity in the present invention means the viscosity of the spun yarn, not the polymer used. The reason for this is that, as a drawback peculiar to polytrimethylene terephthalate, thermal decomposition is more likely to occur as compared with polyethylene terephthalate and the like, and even if a polymer having a high intrinsic viscosity is used, the intrinsic viscosity is significantly reduced by thermal decomposition. This is because it is difficult to maintain a large difference in intrinsic viscosity between the two. Polytrimethylene terephthalate is a polyester having a trimethylene terephthalate unit as a main repeating unit and contains 90 mol% or more of trimethylene terephthalate units. . Therefore, the third component includes polytrimethylene terephthalate containing the other acid component and / or the glycol component in a total amount of 10 mol% or less.

Polytrimethylene terephthalate is synthesized by combining terephthalic acid or a functional derivative thereof and trimethylene glycol or a functional derivative thereof in the presence of a catalyst under appropriate reaction conditions. In this synthetic process, a suitable one or two or more kinds of third component may be added to give a copolyester, or polyethylene terephthalate, polyesters other than polytrimethylene terephthalate such as polybutylene terephthalate, nylon, etc., The polytrimethylene terephthalate may be separately synthesized and then blended. The content of polytrimethylene terephthalate at the time of blending is% by mass, preferably 60% or more, and more preferably 70% or more.

As the third component to be added, aliphatic dicarboxylic acids (oxalic acid, adipic acid, etc.), alicyclic dicarboxylic acids (cyclohexanedicarboxylic acid, etc.), aromatic dicarboxylic acids (isophthalic acid, sodium sulfoisophthalic acid, etc.) ), Aliphatic glycols (ethylene glycol, 1, 2
-Propylene glycol, tetramethylene glycol, etc.), alicyclic glycols (cyclohexanedimethanol, etc.), aliphatic glycols containing aromatics (1,4-bis (β-hydroxyethoxy) benzene, etc.), polyether glycols (polyethylene glycol) , Polypropylene glycol, etc.), aliphatic oxycarboxylic acids (ω-oxycaproic acid, etc.), aromatic oxycarboxylic acids (P-oxybenzoic acid, etc.), and the like. Also, a compound having one or three or more ester-forming functional groups (benzoic acid or the like or glycerin or the like) can be used within a range in which the polymer is substantially linear.

Furthermore, matting agents such as titanium dioxide, stabilizers such as phosphoric acid, ultraviolet absorbers such as hydroxybenzophenone derivatives, crystallization nucleating agents such as talc, slip agents such as Aerosil, and anti-hindering agents such as hindered phenol derivatives. An oxidizing agent, a flame retardant, an antistatic agent, a pigment, a fluorescent whitening agent, an infrared absorbing agent, an antifoaming agent, etc. may be contained. In particular, the average particle size is 0.01
〜5μm Titanium oxide or pigment particles 0.01〜5
When it is contained by mass%, the smoothness is high and the spinnability is excellent.

The cross-sectional shapes of the fibers are round, triangular, L-shaped and T-shaped.
Type, Y type, W type, Yachiyo type, flat type (having a flatness of about 1.3 to 4, W type, I type, Bou-Melan type, corrugated type, skewered dumpling type,
It may be an eyebrow type, a rectangular parallelepiped type, etc.), a polygonal type such as a dogbone type, a multileaf type, a hollow type or an irregular type. The present invention is characterized in that a monofilament yarn composed of the latent crimp developable polyester fiber is used as a warp and / or a weft to form a woven fabric.

The fineness of the monofilament yarn is preferably 10 dtex or more, more preferably 50 dtex or more,
Most preferably, it is 55 to 1670 dtex. As a method for producing the monofilament yarn, a known production method may be adopted.For example, while the composite fiber monofilament yarn spun by a known composite spinneret is cooled in a cold water bath, it is thinned to a predetermined fineness and undrawn. Manufacture monofilament yarn. The unstretched yarn is first drawn in a warm water bath at a predetermined temperature, then subjected to constant length or relaxation heat treatment in a steam bath at a predetermined temperature, and wound up by a winding machine. In order to adjust the boiling water shrinkage of the monofilament yarn, it may be heat-treated continuously or discontinuously at a desired relaxation rate. For example, relaxation rate −
At a temperature of about 10 to + 15% and about 100 to 180 ° C,
Heat treatment is continuous or discontinuous. The relaxation rate is calculated by the following equation when the length of the monofilament yarn before heat treatment is L0 and the restrained length during heat treatment is L1. Relaxation rate (%) = {(L0-L1) / L0} × 100

With respect to the physical properties of the monofilament yarn used in the present invention, the strength is preferably 2.0 cN / dtex or more, more preferably 2.6 to 5.0 cN / dtex. The elongation is preferably 35% or more, more preferably 35 to 60%. The above monofilament yarn is used as a warp and / or a woven fabric.
Alternatively, when the woven fabric is used as a cushioning material, it is possible to obtain a cushioning material which is particularly excellent in holdability with respect to a human body by using it as a weft. In order to sufficiently exert this effect, it is preferable to select the usage method of the monofilament depending on the width of the cushion fabric. Fabric width is 330 mm or less, preferably 15-33
In the case of a narrow fabric of 0 mm, it is used at least for the warp. When the fabric width exceeds 330 mm, warp and / or
Alternatively, it is used as a weft, but from the above viewpoint, it is preferably used as a warp, and more preferably used as both a warp and a weft.

When the monofilament yarn of the present invention is used for either one of the warp yarn and the weft yarn, other monofilament yarn or multifilament yarn can be used for the other. The material used for the other is preferably a one-component polytrimethylene terephthalate fiber or the above-described latent crimp-developing polyester fiber. In addition, for example, polyester fibers represented by polyethylene terephthalate and polybutylene terephthalate, polyamide fibers such as nylon 6 and nylon 66, aromatic polyamide fibers, polypropylene fibers and the like can be used.

In this case, as the form of the yarn used for the other side, particularly when used as a skin material in the cushion material, fluid jet processed yarn or molding yarn is preferable, and ring spun yarn, open end spun yarn and the like are preferable. Spun yarn, monofilament yarn, multifilament yarn with denier of about 0.1 to 5 dtex (including ultrafine yarn), sweet twisted yarn to strongly twisted yarn (for example, single yarn twisted yarn, twin yarn twisted yarn, triple twisted yarn, various twisted yarn, etc. ), False twisted yarn (including drawn false twisted yarn of POY), indented yarn, knit denitted yarn and the like can also be used.

For example, in the molding yarn, the core and the sheath may be made of polytrimethylene terephthalate fiber,
The sheath may be another fiber. In addition, in terms of expressing a smooth and beautiful surface property, among the loop fluff formed in the surface layer portion, the number of fluff lengths of 0.6 mm or more is 30 to 30 mm.
It is preferable to use a fluid jet processed yarn composed of 100 polymethylene terephthalate multifilament yarns / m. There are a 1-feed method and a 2-feed method as a method for producing a fluid-jet processed yarn. In the case of the 2-feed method, for example, when a feed difference is provided, the overfeed rate is +5 to + 20% for the core yarn and the sheath. + Thread
When the feed difference is +5 to + 30% and the feed difference is +5 to + 30%, the fluid jet processed yarn has a sheath-core structure including a sheath yarn and a core yarn, but the fluid jet processed yarn may be produced by any method.

The characteristic feature of the cushioning fabric of the present invention is that it extends 10% in the warp direction when the fabric width is 330 mm or less and in the warp and weft directions when the fabric width exceeds 330 mm. The stress retention after being kept for 15 minutes is 80% or more, preferably 85% or more, and more preferably 90% or more and 99% or less. When the stress retention rate is less than 80%, a fatigue phenomenon occurs due to stress relaxation of the fabric stretched by sitting, and as a result, strain remains.

The elastic recovery rate at 10% elongation is preferably 85% in the warp direction in the case of a fabric width of 330 mm or less and in the warp direction and the weft direction in the case of a fabric width of more than 330 mm. As described above, it is more preferably 90% or more and 99% or less. When the elastic recovery rate at 10% elongation is less than 85%, there is a phenomenon that the return after unwinding the elongation becomes small, the elastic feeling disappears and the fabric easily bends, and the degree of strain recovery decreases. It tends to occur.

In the present invention, when the width of the fabric is 330 mm or less, the tensile strength of the fabric in the warp direction is 490 N.
/ 1 cm width or more is preferable, 490 to 4900 N / 1c
A width of m or more is more preferable. The tensile elongation of the woven fabric in the warp direction is preferably 10% or more, more preferably 30 to 80%. When the width of the fabric exceeds 330 mm, the tensile strengths in the warp and weft directions are both 98 N / 2.5.
cm width or more is preferable, 196 to 1960 N / 2.5c
The m width is more preferable. The tensile elongation in the warp direction and the weft direction of the woven fabric is preferably 10% or more, and 30 to 8
0% is more preferable. When the strength and elongation are lower than this range, there is a risk of tearing especially when used as a skin material.

The elastic recovery rate of a fabric having a fabric width exceeding 330 mm when stretched 10% biaxially is preferably 80% or more, more preferably 85% in both warp and weft directions.
When it is above, distortion etc. become difficult to remain. If the elongation ratio in the weft direction with respect to the warp direction at the time of 98 N stress (per 2.54 cm width) is 0.5 to 1.5, the strain and the like are less likely to remain. The structure of the fabric is not limited,
A plain weave design, a twill weave design, a pattern design, a triaxial or tetraaxial multi-woven fabric, a Karami weave and the like can be used.

As the loom for weaving the narrow width fabric, there are a ribbon loom, a needle loom, and the like, and the needle loom is preferable from the viewpoint of weaving cost. Regarding the density of the woven fabric, the optimum design is performed in consideration of the strength and fineness of the monofilament yarn to be used and further the woven structure according to the specifications of the cushion material (specifications such as width, thickness and design strength). In the case of a fabric having a fabric width of 330 mm or less, a preferable density is a cover factor (fineness of warp (dtex) ^0.5 × density of warp (book / 2.54).
cm)) in the range of 2000 to 7000.

In the case of a fabric having a fabric width of 330 mm or less, the fabric may be stretched in the warp direction under heating after weaving,
Preferably, the stretching can be performed at 90 to 170 ° C. and -3 to 5%. Known processes can be used for dyeing and finishing the fabric of the present invention. A woven fabric may be formed by using a pre-dyed yarn such as a cheese-dyed yarn dyed by a package dyeing machine or the like, or may be post-dyed. In the case of the post-dyeing method, it is also possible to adopt the step of setting a raw fabric.

In order to further improve the abrasion resistance of the fabric,
A water-soluble polyurethane resin having excellent abrasion resistance and a flexible resin film may be impregnated as a finishing agent. Further, in order to improve the surface smoothness of the woven fabric to improve the stress dispersibility, elastic recovery and durability, a silicone-based smoothing agent may be blended in the water-soluble polyurethane resin.

[0034]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited to these Examples. The evaluation in the present invention is based on the following measuring methods. (1) Intrinsic viscosity Intrinsic viscosity [η] (dl / g) is a value obtained based on the definition of the following equation. Ηr in the definition is the viscosity of a diluted solution of polytrimethylene terephthalate yarn or polyethylene terephthalate yarn dissolved in an o-chlorophenol solvent having a purity of 98% or more at 35 ° C, divided by the viscosity of the above solvent measured at the same temperature. The value is defined as the relative viscosity and is defined as the relative viscosity. C is the polymer concentration expressed in g / 100 ml.

Since it is difficult to measure the intrinsic viscosities of the composite fiber monofilaments using polymers having different intrinsic viscosities, it is difficult to measure two types of polymers under the same spinning conditions as those of the composite monofilaments. The intrinsic viscosities measured by spinning the fibers individually and using the obtained yarns were taken as the intrinsic viscosities constituting the composite fiber monofilaments.

(2) Evaluation of stress retention rate at 10% elongation Using a tensile tester manufactured by Shimadzu Corporation, the grip width is 2.5 cm (when the fabric width is less than 2.5 cm, the grip width is , Width, gripping interval 10 cm, pulling speed 10
Elongate to 10% at cm / min and leave in this state for 15 minutes. The stress value (A) at 10% elongation and the stress value (B) after 15 minutes are read. The stress retention rate is calculated by the following formula. Stress retention rate = [B / A] × 100 (%)

(3) Evaluation of elastic recovery rate at 10% elongation Using a tensile tester manufactured by Shimadzu Corporation, the grip width is 2.5 cm (when the width of the fabric is less than 2.5 cm, the grip width is , Width, gripping interval 10 cm, pulling speed 10
After being stretched to a stretching rate of 10% at cm / min, it is contracted at the same rate to draw a stress-strain curve. No stress during contraction
The elongation at the time of becoming is the residual elongation (A). The elastic recovery rate is calculated according to the following formula. Elastic recovery rate at 10% elongation = [(10−A) / 10] ×
100%

(4) Recovery from constant deformation Evaluation of a cloth sample was a steel plate 2 having a circular hole with a diameter of 15 cm.
Place it between the sheets and secure it so that it will not slip. Diameter 10 cm
A hemispherical weight of 3 is used to apply an oval spherical strain having a height of 38 mm, and the strain is left for 10 minutes. At this time, the stress for giving a constant deformation and the strain area (A) after unloading after 10 minutes,
The strain area (B) is read after 15 hours. The recoverability from strain is calculated from the following. Strain recovery = (A-B) / A x 100 (%)

(5) Evaluation of Biaxial Tensile Tester Using a biaxial tensile tester manufactured by Shimadzu Corporation, the operation of simultaneously stretching the warp and weft by 10% and returning it is repeated 10 times. 10 obtained from the vertical and horizontal hysteresis loss curves (Y axis: stress, X axis: elongation) obtained at this time
It is evaluated by the average value of the recovery rate for each time. The test conditions and the recovery rate formula are as follows.

Sample shape: 28 × 28 cm ² Gripping area 20 × 20 cm ² Peeling speed: 100 mm / min Recovery rate = X1 / 10 × 100% X1: 10% Elongation when the stress becomes 0 when returning from elongation %.

(6) Evaluation of texture, cushion, sag and hold property A fabric is stretched on a steel pipe frame to make a trial summer bed. Sensory evaluation of texture, cushioning and holding when sleeping on this bed. Visual evaluation of the degree of fatigue after 20 minutes of use.

[0042]

Example 1 Two kinds of polytrimethylene terephthalate having different intrinsic viscosities (titanium oxide content: 0.1% by mass)
Was melt-extruded at a mass ratio of 1: 1 using a side-by-side type spinneret, and a 390 dtex composite fiber monofilament yarn was manufactured by an ordinary method. The intrinsic viscosity of the composite fiber monofilament is 0.90 on the high viscosity side and 0.
70, and the cross-sectional shape was round. Strength is 3.0c
N / dtex and elongation were 49%.

This composite fiber monofilament yarn is used as a warp yarn, and as a weft yarn, one 167 dtex / 48f polytrimethylene terephthalate fiber yarn (one-component system) is used as a core yarn, and three same yarns are used as sheath yarns, and a feed difference is 5 % By using a fluid-jet-processed yarn having a sheath-core structure that is fluid-jet-processed by
Book / 2.54 cm, Weft 44 Book / 2.54 cm, Weft 2
The main fabrics were aligned and a greige cloth having a flat width of 1500 mm was prepared. After setting this greige machine at 160 ℃, after scouring with a jet dyeing machine, perform disperse dyeing at 130 ℃, 160 ℃
A woven fabric was obtained by setting.

The obtained fabric has a tensile strength of 2.5c.
Per m width was 630 N in the warp direction, 900 N in the weft direction, and the tensile elongation was 69% in the warp direction and 78% in the weft direction. As shown in Table 1, this woven fabric has an excellent elastic recovery rate and stress retention rate, and also has a soft texture and excellent cushioning and holding properties, and has no sagging or bending after use, There was no distortion left. The above results are shown in Table 1.
Shown in.

[0045]

Example 2 In Example 1, the high viscosity side is 0.88,
A woven fabric was obtained in the same manner as in Example 1 except that the conjugate fiber monofilament yarn having a low viscosity side of 0.70 was used. As shown in Table 1, the obtained woven fabric had an excellent elastic recovery rate and stress retention rate, and also had a soft texture and cushioning properties,
It had excellent holdability, and there was no settling or bending after use and no distortion remained. The above results are shown in Table 1.

[0046]

Example 3 The composite fiber monofilament produced in Example 1 was used as the warp, and the weft was composed of two 167 dtex / 48f polytrimethylene terephthalate fiber yarns (one component).
A narrow woven fabric having a 2/2 twill structure was obtained by a narrow needle loom using the yarns that were aligned and twisted at 92 T / m (woven fabric width 150 mm, warp CF = 5630, weft CF = 128).
0).

The obtained narrow woven fabric had a tensile strength of 960 N per 1 cm width in the warp direction, a tensile elongation of 61% in the warp direction, a stress retention rate at 10% elongation and an elastic recovery rate at 10% elongation. Were 91% and 96%, respectively, and had excellent elastic recovery rate and stress retention rate, and were excellent in cushioning property and holding property due to soft texture.
Moreover, there was no settling or bending after use, and no distortion remained.

[0048]

Example 4 In Example 3, the high viscosity side is 0.88,
A woven fabric was obtained in the same manner as in Example 3 except that the composite fiber monofilament having a low viscosity side of 0.70 was used. The stress retention rate at 10% elongation and the elastic recovery rate at 10% elongation of the obtained woven fabric were 90% and 95%, respectively, which had excellent elastic recovery rate and stress retention rate, and had a soft texture. It had excellent cushioning and holding properties. There was no settling or bending after use and no distortion remained.

[0049]

Comparative Example 1 167 dtex / 48 as sheath yarn and core yarn
A fluid jet processed yarn was obtained in the same manner as in Example 1 except that the polyethylene terephthalate fiber yarn of f was used. This processed yarn was dyed using a package dyeing machine under ordinary conditions to obtain a cheese dyeing fluid jet processed yarn. This yarn is used for warp and weft, warp 61 / 2.54 cm, weft 44 /
Weaving width of 2.54 cm, 2 wefts, width 150
A 0 mm plain weave fabric was prepared.

The obtained woven fabric had a tensile strength per width of 2.5 cm of 745 N in the warp direction, 1058 N in the weft direction, and a tensile elongation of 39% in the warp direction and 38% in the weft direction. As shown in Table 1, this woven fabric had low elastic recovery and stress retention, had an extremely hard texture, and had neither cushioning nor holding. Furthermore, after use, sagging or bending was likely to occur, and as a result, distortion remained.

[0051]

Comparative Example 2 A woven fabric was obtained in the same manner as in Comparative Example 1 except that the fluid jet textured yarn used for the weft in Example 1 was also used for the warp. The obtained woven fabric had a tensile strength of 627 N in the warp direction and a weft direction of 902 N per 2.5 cm width, and a tensile elongation of 70% in the warp direction and 89% in the weft direction. This fabric is shown in Table 1.
As shown in FIG.
In contrast, the elastic recovery property and the stress retention property were inferior, and sagging or bending was likely to occur after use, resulting in residual strain.

[0052]

[Comparative Example 3] In Example 1, the warp was 390 dtex.
A woven fabric was dyed and finished in the same manner as in Example 1 except that the polyethylene terephthalate monofilament yarn of was used. The obtained woven fabric has a tensile strength of 735 N in a warp direction per width of 2.5 cm, a weft direction of 890 N, and a tensile elongation of 34 in a warp direction.
%, And the weft direction was 83%. As shown in Table 1, this woven fabric has low elastic recovery and stress retention, has an extremely hard texture, has no cushioning and holding properties, and is prone to sag and flex after use, resulting in distortion. It was still there.

[0053]

[Comparative Example 4] In Example 3, as a warp, 1670d
tex / 192f polyethylene terephthalate fiber yarn 52T / m twisted yarn is used for the warp, 1100 dt
ex / 96f polyethylene terephthalate fiber yarn 2
A fabric width of 150 mm and a warp CF were obtained in the same manner as in Example 3 except that the weft yarn was prepared by twisting and twisting 60 T / m.
= 3190, weft CF = 1410 was obtained.

The tensile strength of the obtained woven fabric was 2842 N in the warp direction per 1 cm width, and the tensile elongation was 18% in the warp direction. The stress retention rate at 10% elongation and the elastic recovery rate at 10% elongation are 50% and 65%, respectively, and the elastic recovery property and the stress retention property are low, the texture is extremely hard, and the cushioning property and the holding property are improved. I didn't have it. Further, after use, sagging or bending was likely to occur, and as a result, distortion remained.

[0055]

Comparative Example 5 A woven fabric having a fabric width of 150 mm, a warp CF = 4760 and a weft CF = 1280 was prepared in the same manner as in Example 3 except that the twisted yarn used for the weft was also used for the warp. Obtained. The tensile strength of the obtained woven fabric was 1037 N in the warp direction per 1 cm width, and the tensile elongation was 57% in the warp direction. The stress retention rate at 10% elongation and the elastic recovery rate at 10% elongation were 75% and 86%, respectively, and Comparative Example 1
However, compared with Example 3, the elastic recovery property and the stress retention property were inferior, and sagging or bending was likely to occur after use, resulting in residual strain.

[0056]

[Comparative Example 6] In Example 3, the warp was 390 dtex.
A woven fabric was obtained in the same manner as in Example 3 except that the polyethylene terephthalate monofilament yarn of was used. The tensile strength of the obtained woven fabric was 735 N in the warp direction per 1 cm width, and the tensile elongation was 34% in the warp direction. The stress retention rate at 10% elongation and the elastic recovery rate at 10% elongation are 48% each.
And 50%, the elasticity recovery and stress retention were low, the texture was very hard, and there was no cushioning or holding. Further, after use, sagging or bending was likely to occur, and as a result, distortion remained.

[0057]

[Table 1]

[0058]

EFFECTS OF THE INVENTION According to the present invention, since it has excellent elongation recovery and stress retention, it is durable and elastic, does not cause slack or settling, and has excellent dimensional stability. It is possible to provide a cushioning material that is abrasion resistant, has a very soft texture, and has excellent holdability with respect to the human body.

Claims (6)

[Claims] 1. A composition comprising two or more polyester components,
A fabric for a cushioning material in which at least a warp is constituted by a latent crimp-developing polyester fiber monofilament yarn, at least one component of which is polytrimethylene terephthalate, which is held for 15 minutes under 10% elongation in the warp direction. A cushioning fabric having a stress retention rate of 80% or more and a fabric width of 330 mm or less. 2. The woven fabric for cushion material according to claim 1, wherein the elastic recovery rate at 10% elongation is 85% or more in the warp direction of the woven fabric. 3. A composition comprising two or more polyester components,
A fabric for a cushioning material in which a warp and / or a weft is composed of a latent crimp-developing polyester fiber monofilament yarn, at least one component of which is polytrimethylene terephthalate, and is stretched by 10% in a warp direction and a weft direction. A woven fabric for a cushioning material, which has a stress retention rate of 80% or more after being retained for 15 minutes under the fabric and has a fabric width of more than 330 mm. 4. In the warp direction and the weft direction of the woven fabric,
The elastic recovery rate at 10% elongation is 85% or more.
The woven fabric for a cushion material described. 5. The latent crimp-developing polyester fiber monofilament yarn is a side-by-side composite of two types of polytrimethylene terephthalate having an intrinsic viscosity difference of 0.05 to 0.40 (dl / g). The woven fabric for cushion material according to any one of claims 1 to 4, wherein 6. A cushion material formed by using the woven fabric according to any one of claims 1 to 5.