JP2003301355A - Fiber linear material having flexibility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flexible and pliable lightweight fiber linear material having high flexibility and excellent shape memorizing properties without a fear of rusting or being detected with a metal detector, well fitting even a body line and responsive to recyclability as a linear material suitable for maintaining the shape of brassieres. <P>SOLUTION: The fiber linear material has the flexibility and comprises a braid 10 to be a core material in the interior and the exterior of the braid 10 covered with a braid 20 to be a sheath material. At least the braid 20 on the sheath material side is composed of a heat-fusible fiber yarn and the whole is hot-molded into a prescribed shape. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible linear body, and more particularly to a fiber linear body suitable for maintaining the shape of a brassiere or the like.

[0002]

2. Description of the Related Art From the viewpoint of pursuing female beauty, brassieres have conventionally been equipped with various linear correction means in order to make the shape of the female breast look better. . Especially in the 1990s,
A brassiere using a shape memory alloy wire as a linear body has been developed and spread, and a brassiere containing a wire has been generalized. At present, about 80% of brassieres include wires and the like, 90% of them are metal wires, and the remaining 10% are made of synthetic resin instead of metal wires.

Metal wires are about four times heavier than those made of synthetic resin, and are difficult to recover when rusted or deformed, and because they are thin and hard, they do not fit the body and feel pain when worn for a long time. However, there are many breakages. In addition, it may be detected by a metal detector whose performance has been enhanced due to the effects of a terrorist incident. Furthermore, when the waste is disposed, the recyclability becomes a problem unless the wire is pulled out.

On the other hand, most of the synthetic resin products are injection-molded using an injection molding die, and they are thin and hard and often broken, which may damage the chest, which is very dangerous. There are also many. Although the cost of synthetic resin is about 20% higher than that of ordinary metal wire in terms of cost, the cost of metal wire also increases about 5 times when shape memory alloy is used. Therefore, in the present invention, for example, as a linear body suitable for maintaining the shape of the brassiere as described above,
It is much lighter than conventional metal wires, has no risk of rusting or hitting metal detectors, and is far more flexible, tougher, and more flexible than conventional synthetic resin ones. It was invented after earnest research for the purpose of providing a fibrous linear body which is excellent in, fits well to a body line, and can also be recycled.

[0005]

Means for Solving the Problems and Effects of the Invention As a flexible fiber linear body according to the present invention capable of achieving the above object, as described in claim 1, there is a core body inside. A braid, which is a sheath, is covered on the outside of the braid, and at least the braid on the sheath side is made of heat-fusible fiber yarn, and the whole is heat-molded into a predetermined shape. Is characterized by.

According to the fiber filamentous body of claim 1,
Both the inner core body and the outer sheath body are made of a braid, which is flexible, and at least the entire braid of the outer sheath body is made of a heat-fusible fiber yarn, so that the whole is heat-molded,
The braid of the sheath body is heated and fused to the braid that is the inner core to form a resinous outer cover, but due to the flexibility of the braid that is the inner core, it is very tough and tensile strength as a whole. It also becomes a linear body with high flexibility and high flexibility.For example, even if the bending state is changed to a linear shape, the original bending state can be immediately returned by removing the load force for deformation. Since the shape memory property can be maintained, the metal wire does not rust like a metal wire and is lightweight, it is suitable as a linear body used for a brassiere or the like, and can be provided at low cost.

Particularly, as in claim 2 which depends on claim 1, when the braid serving as the core is also composed of the heat-fusible fiber yarn, the braid serving as the core and the sheath body are provided. This is advantageous because the bondability with the braid is further enhanced. It is possible and easy to carry out regardless of whether the braid as the core body and the braid as the sheath body are knitted or woven as in Claim 4. Is.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments according to the present invention will be described below with reference to the drawings. The linear body A shown in FIG. 1 shows the state before the heat treatment, and the braid 10 serving as the inner core is one and the braid 20 serving as the outer sheath is covering the braid 10. The braid of the sheath body 20
Is composed of a heat-fusible fiber yarn such as a low-temperature-fusible polyester fiber yarn. The braids 10 and 20 are braided by a braiding machine (brading machine).

2 and 3 show a state after the entire linear body A is heat-molded into a predetermined shape, and the curved shape shown is an example of a shape by molding, and a molding shape by another shape. It can also be carried out in any of the braid 20 of the sheath body
Is heat-sealed to the braid 10 of the core body. For example, even if the curved state as shown in FIG. 3 is changed to a straight line, the original bent state is obtained if the load force deforming the straight line is removed. It is possible to provide a material having a high flexibility and a shape memory capable of being restored.

When heat-treating the above-mentioned initial double-string-like one to a curved state used for brassiere, etc., the double-string-like one is preliminarily heated to a temperature of about 170 to 200 ° C. After being preheated by passing through a heat treatment atmosphere, it is further brought into contact with a heating roll or the like for bending to finish it into a predetermined bending shape while being heat-formed. By the above heating, the heat-fusible fiber yarn will be resinized in the braided state.
Since the linear body according to the present invention is composed of the double braids 10 and 20, it is tough, has high tensile strength, and has high flexibility, such as a metal wire or a linear body of injection-molded synthetic resin. It has no intuition, is lightweight, and does not require consideration of rust. Moreover, since it can be discarded as it is without being separated from the brassiere even when it is discarded after being used as a linear body of a brassiere, it is also suitable for recycling.

The braid 10 serving as the core is not limited to the one as described above, but a plurality of braids 10, 10 ... As shown in FIG. 4 showing before heating and FIG. 5 showing after heating. As a body, it is also possible to carry out encapsulation and heat fusion with a braid 20 serving as an outer sheath body. In addition, in any of the embodiments, the braid 10 on the core body side may be made of the heat-fusible fiber yarn like the braid 20 of the sheath body. As the heat-fusible fiber yarn,
The count may be changed according to the thickness of the linear body, and various known materials other than the above-mentioned low-temperature fusible polyester fiber can be used.

Further, any of the braids 10 and 20 can be embodied not only by a braid made of a knitted fabric but also by a braid made of a woven fabric. And, as the use of the fibrous linear body according to the present invention, in addition to the linear body suitable for maintaining the shape of the brassiere, maintaining the shape of the correction underwear, maintaining the shape of the cutter shirt or the collar of the suit, and further bags. It will also be suitable as a linear body used for maintaining the shape.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a linear body before heat treatment.

FIG. 2 is a partially cutaway perspective view showing a linear body after heat treatment.

FIG. 3 is a front view illustrating a curved state, showing a change in bending into a straight line.

FIG. 4 is a perspective view in which a part of a case where there are a plurality of braids as a core body is cut away.

FIG. 5 is a partially cutaway perspective view showing the linear body of FIG. 4 after heat treatment.

[Explanation of symbols]

A linear body Braid which becomes 10 cores 20 Braid that becomes the sheath

Claims (4)

[Claims] 1. A braid serving as a core is provided inside, and a braid serving as a sheath is covered on the exterior of the braid, and at least the braid on the sheath side is made of a heat-fusible fiber yarn, A fibrous linear body having flexibility, characterized in that the whole is heat-molded into a predetermined shape. 2. The flexible fiber filament according to claim 1, wherein the braid serving as the core is also made of heat-fusible fiber yarn. 3. A flexible fibrous linear body according to claim 1, wherein the braid serving as the core body and the braid serving as the sheath body are braids made of a knitted fabric. 4. The flexible fiber linear body according to claim 1, wherein the braid serving as the core body and the braid serving as the sheath body are made of a woven braid.