JPH07109045B2 - Spun yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention has substantially amorphous softening property in a low temperature range of 90 to 110 ° C., and thermoforms by thermal bonding of constituent fibers. The present invention relates to a spun yarn capable of easily doing such things.

[Prior Art] Conventionally, most of three-dimensionally moldable cloths used in the fields of shoulder pads, brassiere cups, etc. are resin processed non-woven fabrics.

Such a conventional three-dimensionally moldable cloth is expensive because it is resin-processed, and the resin-processing usually requires drying and curing at a high temperature of about 110 to 130 ° C. Therefore, there is a problem that the cloth and the fiber material may be damaged, and the washing resistance and durability of the adhesive resin are generally low. Particularly, in the case of the synthetic fiber cloth, the cloth is easily discolored or deteriorated. It also had various problems such as.

Furthermore, resin bonding is also used in the field of embroidery base fabrics made of spun yarn, but it is necessary to perform strong resin bonding from the viewpoint of durability, etc., and sufficient resin liquid is applied to the inner layer of the spun yarn. Since it was necessary to impregnate it, the processing cost was high.

Furthermore, as a cured cloth by heat bonding, JP-A-60-139846
Although there is a proposal described in Japanese Patent Publication No. JP-A-2003-96, it is difficult to make fine denier of the high melting point component of the core part because the simple core-sheath type composite fiber is used in this fabric, and there is a limit of about 0.5 to 1 denier. is there. Therefore, although a cured fabric can be obtained by the heat-bonding treatment, it has a rough and hard feeling based on the adhesive structure and the use of thick fibers, and is not suitable for the clothing field where the skin is too irritating to directly touch the skin. There was a problem that it was not suitable.

[Problems to be Solved by the Invention] In view of the above points, an object of the present invention is to have an amorphous softening property at a relatively low temperature and have a property of thermal bonding,
In addition, it is intended to provide a spun yarn which is soft and can maintain a good texture even when the adhesive structure is present.

[Means for Solving Problems] The spun yarn of the present invention which achieves the above-mentioned object has the following constitution.

That is, the spun yarn of the present invention is a modified polyester component in which the island portion is composed of a polyester component having a normal melting point, the island portion has two or more islands, and the sea portion has a softening point temperature of 90 ° C. or more and 110 ° C. or less. Sea-island composite synthetic staple (A) consisting of 100% by weight of the spun yarn,
Alternatively, another staple fiber (B) in which the sea-island type composite synthetic fiber staple (A) has a melting point of 140 ° C. or higher or a thermal decomposition temperature of 120 ° C. or higher at a mixed spinning rate of 40% by weight or more in a spun yarn. It is a spun yarn that is used by being mixed with and used.

[Operation] Hereinafter, the spun yarn of the present invention will be described in more detail.

The spun yarn of the present invention comprises at least sea-island type composite synthetic fiber staple (A), and the island component of the fiber (A) is usually a polyester component having a melting point, while the sea component is a softening point. It is composed of a modified polyester component having a temperature of 90 ° C or higher and 110 ° C or lower.

Here, the normal melting point polyester component has a melting point of 180
It means a polyester component in the range of ℃ or more and 262 ℃ or less, mainly polyethylene terephthalate is preferably used, but if the melting point is in the range of 180 ℃ or more and 262 ℃ or less, terephthalic acid and ethylene In addition to glycol, copolymer polyester having a copolymer component may be used.

The polyester component having a normal melting point constitutes two or more islands, and by making such a multi-island, the flexibility of the fiber component (A) inside the spun yarn becomes good, and the adhesive strength,
Higher adhesion strength. Further, according to the present invention, it becomes possible to make the fineness of the island component finer than 0.5 denier by the multi-island formation, and despite the strong adhesive strength and strength,
The texture can be a soft product.
The sea-island ratio should be in the range of 40/60 to 60/40.

The sea component is composed of a modified polyester component having a softening point temperature of 90 ° C. or higher and 110 ° C. or lower. For example, an isophthalic compound having an amorphous softening property and having a softening point temperature within the above range. Acid-copolymerized polyester and the like can be preferably used. Polymer of sea ingredient,
By configuring within such a softening point temperature range, it is possible to realize thermal bonding at a low temperature which is practically easy to use and has good handleability, and further, the other fiber (B It is also possible to widen the selection range of (1), and it is possible to expand the product of the spun yarn of the present invention to a wide variety of uses for general clothing, auxiliary materials for clothing, industrial materials, and the like.

Here, if the softening point temperature of the sea component of the fiber (A) is lower than 90 ° C., it is unfavorable because it is difficult to set the twist after spun yarn, that is, in the form of tube yarn or cheese. Generally, it is set by twisting at 80 to 90 ° C in moist heat, but adhesion occurs between spun yarns laminated and wound at this time, making it difficult to unwind and difficult to use. Further, if the softening point temperature is higher than 110 ° C, heat treatment at a high temperature is required to cause adhesion, and in that case, the selection range of the fiber (B) as the blending partner is restricted, and the versatility is high. It is not desirable because it lacks. That is,
In the case of wool, for example, it is generally at most 120 in terms of its strength.
The heating limit is up to about 0 ° C., and a polymer structure that requires heat treatment at a high temperature should not be used.

Staple fibers (B) mixed with the above fibers (A)
As, it is important to use a fiber having a melting point of 140 ° C or higher or a thermal decomposition point temperature of 120 ° C or higher,
If the above conditions are satisfied, it is possible to cause thermal bonding of the staple fiber (B) substantially without being thermally deteriorated, regardless of whether it is a synthetic fiber, a chemical fiber, a natural fiber or the like. Is.

The mixing ratio of the sea-island type composite synthetic fiber staple (A) must be 40% by weight or more in the spun yarn, and if the mixing rate is less than 40% by weight, the heat-bonding ability will be small and knitted fabric or woven fabric In such a case, the force for fixing the tissue point is weak, which is not preferable. Although it is harder in terms of texture, a spun yarn may be formed by using 100% of the sea-island type composite synthetic fiber staple (A).

In the spun yarn of the present invention, as the method for mixing the staple fiber (A) and the staple fiber (B) as described above, a uniform dispersion blending, a side-by-side composite blending, a core-sheath composite blending, or the like may be used. Either aspect may be used.

The spun yarn of the present invention may be used by itself as the spun yarn alone for a desired purpose, or may be used as a spun yarn or a twisted yarn with an ordinary spun yarn or another yarn depending on the intended use. It is what is done.

[Advantages of the Invention] According to the present invention as described above, an adhesive spun yarn or an adhesive cloth which is easily heat-bonded at a low temperature and has an extremely high heat-bonding strength and which has a soft and soft texture is provided. It will be possible to obtain.

By using the spun yarn of the present invention, the specific effects listed below can be obtained, and the application can be expanded to various applications.

That is, in A. the knitted fabric, it is possible to easily firmly fix the texture points by heat-bonding the constituent yarns, and it is suitable for the production of a mesh-like fabric that requires durability. Further, the fabric can be easily three-dimensionally molded by elongating it in accordance with a desired three-dimensional mold and thermally bonding the constituent yarns in that state.

B. Thick-count spun yarn (warm-count 4 to 10-count) is suitable for embroidery base fabric and does not require conventional resin processing.

C. When weaving using the selvage yarn of a shuttleless loom, the selvage is heat-bonded by simply passing the woven cloth through a normal dyeing process, and thereby a good woven cloth in which fraying of the ear tissue is prevented is obtained. Obtainable.

D. When used for a cured fabric for interlining, it has extremely good wash resistance and can have a high-class feel.

When it is used for fabrics for bags such as E. bags, rucksacks, shopping bags, and storage cases for clothes and bedding, it is possible to obtain those which are strong, strong and have good shape retention and durability.

F. By using the spun yarn of the present invention as a core and applying a heat-bonding treatment by covering a film slit yarn or the like, it is possible to produce a covered yarn having a strong covering force, for example, water that does not easily peel off. You can get the quote thread.

G. When used as a splicing yarn or ground yarn for fancy yarns, nep yarns, molding yarns, etc., it is possible to obtain good yarns with almost no falling off such as neps, naps and piles by heat-bonding treatment.

Further, since it can be easily heat-bonded with an iron, a hair dryer, hot water, etc., it can be applied to various applications such as handicraft threads, handicraft materials and various other hobbies.

[Examples] Specific configurations and effects of the spun yarn of the present invention will be described below with examples.

Examples, Comparative Examples A homopolyester (brand name 3d × 89V (variable cut) mm) having a normal melting point (melting point 260 ° C.) is used for the fiber (B), and the softening point of the sea component is 100 ° C. for the fiber (A). This is an isophthalic acid copolyester with a melting point of 260 islands.
Homopolyester (brand name: 3d × 89Vmm) at ℃ was used to produce a uniform mixed spun yarn (warm-count 24th) by the raw cotton mixing method.

A tubular knitted fabric was created using this spun yarn and ironed at 200 ° C. to compare various physical properties as a heat-bonding cured fabric,
evaluated.

The results are as shown in Table 1.

As is clear from the results shown in Table 1, the spun yarn of the present invention is
Strong thermal adhesion and extremely excellent durability. For that reason, the texture and touch were not rough.

In addition, from these results and various findings of the present inventors,
Even when the blend ratio of the fiber staple (A) is within the range of 40% by weight or more, it is preferable to set the blend ratio of 40 to 50% by weight particularly in the field such as molding yarn where the texture, touch, etc. are required. In particular, in fields such as bag fabrics where strong thermal bonding strength is required, it is preferable to use a blending ratio of 70 to 90% by weight.

Continuation of the front page (56) Reference JP-A-60-139846 (JP, A) JP-A-59-228039 (JP, A) JP-A-59-15530 (JP, A) JP-A-60-17140 (JP , A) JP-A-60-181 (JP, A)

Claims (1)

[Claims] 1. A sea-island type in which the island portion comprises a polyester component having a normal melting point, the island portion has two or more islands, and the sea portion comprises a modified polyester component having a softening point temperature of 90 ° C. or more and 110 ° C. or less. 100% by weight of the composite synthetic fiber staple (A) is used in the spun yarn, or the sea-island composite synthetic staple fiber (A) has a melting point of 140 ° C. at a blending ratio of 40% by weight or more in the spun yarn. A spun yarn, which is used by being mixed-spun with another staple fiber (B) having the above temperature or a thermal decomposition temperature of 120 ° C. or higher.