JP2006057192A - Stretchable pile fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stretchable pile fabric having excellent stretchability performances and excellent water absorptivity, rapid-drying properties and durability in washing with slight skin irritation. <P>SOLUTION: The pile fabric is composed of ground yarns and pile yarns. At least a part of the ground yarns are composed of yarns composed of a crimpable polyester conjugated filament yarn containing a layer consisting essentially of polytrimethylene terephthalate and a polyester ultrafine fiber yarn. A crimped ultrafine fiber yarn prepared by carrying out crimping processing of the polyester ultrafine fiber yarn having ≤1.3 dtex single filament fineness is used as the polyester ultrafine fiber yarn. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a stretchable pile fabric, and more particularly to a stretchable pile fabric that has stretchability and is excellent in washing resistance, chemical resistance, water absorption / fast drying property, and dimensional stability.

  The conventional pile fabric used for general purposes is essentially non-stretchable because both the ground yarn and the pile yarn are composed of 100% cellulose-based spun yarn mainly composed of cotton yarn. For this reason, when wrapping around the body or head, there is an inconvenience that the fabric does not expand and contract and slides down. In order to prevent this slipping, a fabric using a covering yarn in which a polyurethane elastic yarn is covered with cotton yarn as a warp yarn has been proposed (see Patent Document 1).

  However, the pile fabric using polyurethane elastic yarn has excellent stretchability, but the polyurethane elastic yarn itself has poor heat resistance, chemical resistance and light resistance. There was a drawback that the strength and stretchability were greatly reduced. In particular, thioglycolic acid-based ammonia salts and bromates used in beauty salons, and chlorine-based bleaching agents used in laundry promote deterioration of polyurethane elastic yarns and have a problem in durability. In addition, when producing a stretchable fabric using polyurethane elastic yarns, it is necessary to process the polyurethane elastic yarns with other fibers, which increases the production cost.

  As other stretch pile fabrics, polyester-based eccentric composite fibers in which high-shrinkage polyester copolymerized with isophthalic acid or sodium isophthalic acid and polyethylene terephthalate are combined in an eccentric shape are used as elastic fibers. There has been proposed a method for imparting stretchability by using a spun yarn containing staples of this eccentric type composite fiber as a ground yarn in a warp direction and / or a transverse direction (see Patent Document 2).

  In the case of a stretchable fabric using a spun yarn containing such a polyester-based eccentric composite fiber as a ground yarn, the problem of insufficient durability when using a polyurethane elastic yarn can be solved. However, since the polyester-based eccentric composite fiber is made into short fibers and mixed with other fibers to produce spun yarn, a spinning process such as a shortening process or a blending process is necessary, and the manufacturing cost There is a problem that becomes higher. In addition, polyester-based eccentric composite fiber staples having crimps are difficult to spin and it is very difficult to obtain a spun yarn of uniform quality.

JP-A-8-127940 JP-A-10-219547

  Therefore, the present invention provides a stretchable pile fabric that has good stretchability, and is excellent in washing durability, chemical resistance, water-absorbing quick-drying, dimensional stability, and advantageous in terms of processing costs at the time of production. Main purpose.

  In order to achieve this object, the stretch pile fabric of the present invention is a fabric composed of a ground yarn and a pile yarn, and at least a part of the ground yarn has a crimp property having polytrimethylene terephthalate as a main component. It is a yarn composed of a polyester-based composite continuous fiber and a polyester-based ultrafine fiber.

  According to the present invention, it is possible to obtain a pile fabric excellent in water absorption quick drying property and dimensional stability as well as stretching performance. Furthermore, the composite fiber of the stretchable material used in the present invention is superior in chemical resistance against permanent liquid, detergent liquid and bleaching agent compared to polyurethane elastic yarn, and also excellent in light resistance and heat resistance. An elastic pile fabric excellent in durability over time can be obtained.

  In addition, the polyester-based composite long fibers do not deteriorate in stretch performance even when sterilized under high temperature and high pressure, so that they can sufficiently withstand applications in which washing and sterilization are used repeatedly.

  Furthermore, in the stretch pile fabric of the present invention, the polyester-based composite continuous fiber used as the stretch material does not have the same stretchability as the polyurethane-based elastic yarn. It is possible to suppress fluctuations in yarn tension inside and between beams. Therefore, the stretchable pile fabric of the present invention can provide a product excellent in terms of constant length and quality as well as excellent stretchability.

  In the stretchable pile fabric of the present invention, a crimpable polyester-based composite fiber including at least one layer mainly composed of polytrimethylene terephthalate is used as a stretchable material, and the polyester-based ultrafine fiber is used together with the composite fiber. Is used as at least a part of the ground yarn.

  The crimpable polyester composite fiber used as the stretchable material in the present invention has a fiber composite form in which crimps can be expressed. For example, the layers constituting the composite fiber, such as a side-by-side type and an eccentric core-sheath type, are used. Takes a fiber composite form in which the positions are biased.

  Here, at least one of the layers constituting the composite fiber is a polytrimethylene terephthalate layer. For example, a composite fiber in which a polytrimethylene terephthalate layer and another polyester layer are combined, or a composite layer in which a low-viscosity polytrimethylene terephthalate layer and a high-viscosity polytrimethylene terephthalate layer are combined Fiber. In the case of the former composite fiber, a coiled crimp is developed by the difference in the polymer of each layer. For example, a side-by-side composite fiber composed of a polytrimethylene terephthalate layer and a polyethylene terephthalate layer or an eccentric core-sheath type composite Fiber. In the case of the latter composite fiber, coil-like crimps are manifested by different viscosities even if the polymers in each layer are of the same type.

  The polytrimethylene terephthalate constituting at least one layer of the composite fiber used in the present invention is a polyester having trimethylene terephthalate units as main repeating units, and the trimethylene terephthalate units are about 50 mol% or more, preferably 70 mol% or more, More preferably, it contains 90-100 mol%. Accordingly, the copolymer polytri- mer in which the total amount of the other acid component and / or glycol component as the third component is within a range of about 50 mol% or less, preferably 30 mol% or less, more preferably 10 mol% or less. Methylene terephthalate may be used.

  Polytrimethylene terephthalate is synthesized by polycondensation of terephthalic acid or a derivative thereof with trimethylene glycol or a derivative thereof in the presence of a catalyst under appropriate reaction conditions. In this polycondensation step, a suitable one or two or more third components may be added to form a copolyester.

  As the third component to be copolymerized, 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 (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. A compound having one or three or more ester-forming functional groups (benzoic acid or the like or glycerin or the like) may also be used within the range where the polymer is substantially linear.

  Moreover, in the case of the polyester composite fiber which consists of a polytrimethylene terephthalate layer and another polyester layer, as another polyester, a polyethylene terephthalate is mentioned, for example.

  If necessary, the polytrimethylene terephthalate layer and other polyester layers are further provided with a matting agent such as titanium dioxide, a stabilizer such as phosphoric acid, an ultraviolet absorber such as a hydroxybenzophenone derivative, and a crystallization such as talc. A nucleating agent, an easy lubricant such as Aerosil, an antioxidant such as a hindered phenol derivative, a flame retardant, an antistatic agent, a pigment, a fluorescent whitening agent, an infrared absorber, an antifoaming agent, and the like may be contained.

  The polyester composite fiber used in the present invention is supplied with the polyester composition (s) prepared for each layer, melted and discharged (spun) into a desired composite structure with a normal melt composite spinning apparatus, cooled, and 1500 m / The unstretched yarn is wound once at a winding speed of about 1 minute, and then stretched at a rate of about 2 to 3.5 times, and then stretched following spinning without winding with the unstretched yarn. Further, by the spinning drawing direct connection method (DSD method) in which spinning is performed, the take-up speed at the time of spinning can be increased to 5000 m / min or more, and it can be produced by a high-speed spinning method of winding substantially without drawing.

  The single yarn cross section of this polyester conjugate fiber can take any shape depending on the composite structure. For example, in the case of a side-by-side composite fiber, a round cross section may be used, but a deformed cross sectional shape is preferable. Examples of the deformed cross-sectional shape include a non-circular shape such as an eyebrow shape and a snowman shape, and a deformed circular shape such as an ellipse. In the case of an eyebrows-shaped or snowman-shaped cross-sectional shape, a composite shape in which approximately circular polymer layers are connected is taken.

  Moreover, the weight ratio of the polytrimethylene terephthalate layer and the other layers in the polyester composite fiber is in the range of 30/70 or more and 70/30 or less from the viewpoint of yarn production and dimensional uniformity of the coil in the fiber length direction. Preferably there is.

  The single yarn fineness of the polyester composite fiber may be appropriately determined in consideration of the elongation rate and texture of the product, but generally about 0.1 to 5 dtex is preferable.

  The polyester-based ultrafine fibers used in the present invention are ultrafine fibers made of ordinary polyester such as polyethylene terephthalate, and the single yarn fineness is preferably 1.3 dtex or less, more preferably 0.9 dtex or less, particularly preferably 0.34 dtex or less. It is.

  Polyethylene terephthalate is a polyester having an ethylene terephthalate unit as a main repeating unit, that is, a polyester obtained by using terephthalic acid as a main acid component and ethylene glycol as a main glycol component. However, it may be a copolymerized polyethylene terephthalate containing a copolymer component capable of forming another ester bond in a proportion of 20 mol% or less, preferably in a proportion of 10 mol% or less.

  Examples of the copolymerizable compound include sulfonic acid, sodium sulfonic acid, sulfuric acid, sulfate ester, diethyl sulfate, ethyl sulfate, aliphatic sulfonic acid, ethanesulfonic acid, chlorobenzene sulfonic acid, alicyclic sulfonic acid, isophthalic acid, Dicarboxylic acids such as sebacic acid, azelaic acid, dimer acid, adipic acid, oxalic acid, decanedicarboxylic acid, hydroxycarboxylic acids such as p-hydroxybenzoic acid, ε-caprolactone, triethylene glycol, polyethylene glycol, propanediol, pentanediol Diols such as hydroquinone and bisphenol A are preferably used.

  If necessary, titanium dioxide as a matting agent, silica or alumina fine particles as a lubricant, hindered phenol derivatives, coloring pigments as an antioxidant may be added.

  For example, in the case of ultrafine fibers made of polyethylene terephthalate, these ultrafine fibers are melt-spun with polyethylene terephthalate by a usual method, cooled, and once wound with an undrawn yarn at a speed of about 1500 m / min. High speed to increase the take-up speed after spinning to 5000 m / min or more by the spin-drawing two-step method of drawing at about 5 times, or the direct-spinning drawing method (DSD method) in which the spinning-stretching process is directly connected. It can be produced by a spinning method. Here, in order to set the single yarn fineness to a desired level, conditions such as a polymer discharge amount during spinning, a take-up speed, a draw ratio, and a take-up speed may be adjusted.

  Further, in order to obtain ultrafine fibers having a desired single yarn fineness, a method of splitting after composite spinning may be used in addition to the method of single spinning described above.

  The polyester-based ultrafine fiber when combined with the above-described polytrimethylene terephthalate-based crimped composite long fiber may be a long fiber without crimp, but the polytrimethylene terephthalate-based crimped composite long fiber. In order not to hinder the stretch property of the fiber, it is desirable to be a crimped ultrafine fiber that has been crimped.

  In the stretchable pile fabric of the present invention, at least a part of the ground yarn is a yarn composed of crimped polyester composite continuous fibers and polyester ultrafine fibers. These yarns may be those in which crimped polyester-based composite continuous fibers and polyester-based ultrafine fibers are entangled, or may be twisted, but are preferably twisted. What is necessary is just to select suitably the number of entanglement in that case, and the entanglement intensity | strength in relation to a desired texture level within the range which does not have a bad influence on the texture of a textile fabric. Also, the number of twists has an adverse effect on the texture and stretchability of the fabric, and therefore the number of twists may be appropriately selected so as to obtain the desired texture and stretchability. Further, this yarn may be used as a ground weft yarn, a ground warp yarn, or both a ground weft yarn and a ground warp yarn among ground yarns.

  As the pile yarn of the stretch pile fabric of the present invention, it is preferable to use a yarn containing polyester-based ultrafine fibers and / or cellulose-based short fibers. Examples include yarns made of polyester ultrafine fibers, yarns made of crimped polyester ultrafine fibers, spun yarns made of cellulose short fibers, and mixed yarns of cellulose short fibers and other fibers. It is done. The fineness of the pile yarn is preferably 166 to 333 dtex, or 50/2, 40/2, 20/1 or the like of cotton count.

  Here, the polyester type ultrafine fiber is the same as the polyester type ultrafine fiber used as the ground yarn. Further, as the cellulose short fibers, cellulose natural fibers such as cotton and cellulose regenerated short fibers such as rayon are used. In particular, it is preferable to use a polyester ultrafine fiber as a pile yarn in order to improve water absorption and quick drying. In particular, in order to increase water absorption and reduce skin irritation, it is preferable to use cellulosic short fibers.

  The stretchable pile fabric of the present invention is a product manufactured by weaving using the above-described yarns as the ground yarn and the pile yarn. The woven structure of the pile woven fabric is a pile woven as shown in FIG. 1, and may be a pile woven structure other than this. In the organization chart of FIG. 1, the warp yarn is arranged by repeating one pile yarn and three ground warp yarns, and the ground weft yarn is aligned as the weft yarn. In the case of the symbol ◎, the pile yarn is raised from the surface of the weave to form a pile. The vertical warp yarn appears on the surface of the fabric in the circles with the symbol ○. In addition, in the symbol x, the ground weft yarn appears on the fabric surface.

  After weaving so as to have such a pile weave structure, dyeing, finishing and the like are performed in the same manner as a normal towel manufacturing process. Heat treatment is performed in this processing step. The crimpable polyester-based composite long fibers exhibit further crimping ability by the heat treatment and impart stretchability to the woven fabric. At this time, in order to give sufficient elasticity to the stretchable pile fabric, it is preferable to perform relaxation heat treatment. In addition, as heat processing conditions, the range of 120 degreeC or more and 180 degrees C or less is preferable in dry heat, and 100 degreeC or more and 140 degrees C or less are preferable in wet heat. If the dry heat is less than 120 ° C. or the wet heat is less than 100 ° C., the expression of crimp by relaxation heat treatment cannot be sufficiently obtained. Moreover, when the dry heat exceeds 180 ° C. or the wet heat exceeds 140 ° C., the texture of the fabric is lowered and the cost is increased, which is not preferable.

  Further, if necessary, it can be treated with a hydrophilic agent, an antibacterial agent, a softening agent, an antifouling agent, or the like in the finishing step.

  Examples of the present invention will be shown below, but the present invention is not limited thereto.

[Example 1]
<Thread use>
Two types of warp yarn, ground warp yarn (G) and pile yarn (P), were prepared.

  Threads (83 dtex, 24 filaments) made of Toray's polyester composite fiber (polytrimethylene terephthalate / polyethylene terephthalate composite ratio = 50/50, side-by-side crimped polyester composite fiber), polyethylene terephthalate Each crimped ultrafine fiber yarn obtained by false twisting the fibers (165 dtex, 144 filament) by a normal method is aligned one by one with a twister, and the twist number is 200 t / m, twist direction. Twisting was performed under the condition of S. This was designated as a ground warp yarn (G).

Also, two crimped ultrafine fiber yarns obtained by false twisting polyethylene terephthalate fiber (165 dtex, 144 filament) by a normal method are aligned and twisted at 400 t / m in twisting direction. Twisting was performed under the condition of S. This was used as a pile yarn (P).
Furthermore, cotton spun yarn (No. 20 single yarn) was used as the horizontal weft yarn.

<Warming>
Two warps were warped. One beam is wound while warping the ground warp yarn (G) with a warping tension of 5 to 8 g / unit, and the other beam is wound with 5 to 7 g / unit pile yarn (P). The film was wound while warping with a warping tension.

<Gluing>
The ground warp yarn (G) and the pile yarn (P) were pasted with a paste mainly composed of starch which is usually used before warping, and dried and beamed at 140 ° C.

<Weaving>
A pile fabric was woven using a fly shuttle loom. The structure of this pile woven fabric is the structure shown in FIG. 1, and the vertical density was 58 lines / inch and the horizontal density was 37 lines / inch.

<Dyeing arrangement processing>
The pile fabric was manufactured by passing through the steps of desizing, chlorine bleaching, drying, and finishing set in the same manner as the dyeing and arranging process at the time of normal towel manufacture. In addition, normal towel manufacturing processing conditions were adopted as temperature conditions and processing time in the processing.

  The resulting stretch pile fabric had properties rich in extensibility and recoverability.

[Comparative Example 1]
Use the 20th cotton spun yarn for the ground warp yarn and the horizontal weft yarn, and use the 40th cotton spun yarn (S, 500 t / m) yarn for the pile warp yarn as in Example 1. Weaving and dyeing and arranging were carried out to produce a pile fabric of the same standard as in Example 1.

[Comparative Example 2]
As the ground warp yarn, a yarn obtained by additionally combusting a cotton spun 30th double yarn and a polyurethane elastic yarn 44 dtex at a supplementary twisting number of 500 t / m was used. In addition, weaving was performed in the same manner as in Example 1, using 20th cotton spun yarn for the ground weft yarn and 40th spun yarn (S, 500 t / m) for the pile warp yarn. Then, dyeing and arranging processing was performed, and a pile fabric of the same standard as in Example 1 was manufactured.

The performances of the pile fabrics produced in Example 1 and Comparative Examples 1 and 2 were evaluated. The results were relatively evaluated according to the following criteria and are summarized in Table 1.
Evaluation criteria ◎: Very good, ○: Good, ×: Bad

  The stretchable pile fabric of the present invention is a fabric that has excellent stretchability, chemical resistance, washing durability and dimensional stability, is highly water-absorbing and quick-drying, and has little skin irritation. Therefore, taking advantage of these features, it is useful for towels such as long towels, bath towels, hand towels, especially towels such as towels used in places where chemicals such as beauty salons are used, bathrobes and pajamas. It can be used in various fields that require appropriate stretchability, sweat absorption, comfort and fashionability, such as sheets and outer clothing.

It is a woven structure sectional view which illustrates the woven structure structure in the elastic pile fabric of the present invention.

Explanation of symbols

◎ Pile yarn floating eyes ○ Ground vertical yarn floating eyes × Ground horizontal yarn floating eyes

Claims (4)

In a pile fabric composed of a ground yarn and a pile yarn, at least a part of the ground yarn is composed of a crimpable polyester composite continuous fiber including a layer mainly composed of polytrimethylene terephthalate and a polyester ultrafine fiber. Stretch pile fabric characterized by being a yarn. The stretchable pile fabric according to claim 1, wherein the polyester ultrafine fiber is a crimped ultrafine fiber obtained by crimping a polyester ultrafine fiber having a single yarn fineness of 1.3 dtex or less. The stretch pile fabric according to claim 1 or 2, wherein the pile yarn is a yarn containing polyester-based ultrafine fibers and / or cellulose-based short fibers. The stretch pile according to any one of claims 1 to 3, wherein the pile yarn is a yarn composed of crimped ultrafine fibers obtained by crimping a polyester ultrafine fiber having a single yarn fineness of 1.3 dtex or less. fabric.

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