JPH10201969A - Wadding material for vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat which has soft feeling and is excellent in cushioning performance, setting resistance, and fire resistance to have high practical value by forming a wadding main body from a fiber web using a solid high melting point fiber filament made by coating the surface of the filament with a lubricity applying resin coat as a main material. SOLUTION: In a wadding material for a vehicle seat, a wadding main body 1 is formed from a fiber web, the main material of which is a solid high melting point fiber filament 2 made by coating the surface of a core filament with a lubricity applying resin film. The fiber webs are mechanically enough tangled by needle working, or hot adhesive fiber filaments are mixed in the fiber web to fuse filaments to each other during heat setting to obtain a material which has more soft feeling and is more rich in elasticity as compared with the material to which peeling strength is given. The filament 2 coated with lubricity applying resin coating improves the sliding of mutual contact so that the restoring force can be effectively applied.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wading material for a vehicle seat which is excellent in soft feeling and cushioning property and excellent in flame retardancy.

[0002]

2. Description of the Related Art As this kind of wading material for a vehicle seat, as shown in Japanese Utility Model Application Laid-Open No. 1-103400, a polyurethane foam having a large volume, a soft feeling and an excellent cushioning property is used. Is widely known, but because the strength of the polyurethane foam is insufficient, a high-quality, high-strength material is used as a skin material covering the polyurethane foam, which increases the cost and increases the polyurethane foam. Also had problems in terms of waste pollution or recycling.

[0003] In order to solve such a problem, recently, there has been proposed a material in which a fiber web is used as a wadding material instead of a polyurethane foam. The former is soft because it is made to have sufficient peel strength by entanglement sufficiently, or by mixing heat-bondable fiber filaments in the fiber web and fusing the fiber filaments together during heat setting. The texture is difficult to obtain and is not suitable as a thick one, and the latter has problems such as poor sag resistance and high cost.

Accordingly, the present inventors can improve both soft feel and sag resistance by using a wadding material in which high melting point fiber filaments coated with a lubricity-imparting resin film are mixed in a fiber web. We found this and proposed it as Japanese Patent Application No. 8-29372. However, since the silicon-based resin film, which is a lubricity-imparting resin film, has the property of being extremely flammable, there remains a problem that the flame retardancy required as a wading material cannot be sufficiently satisfied. I was

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and has a problem in terms of disposal pollution or recycling and a problem in strength. Polyurethane foam is reduced or not used at all, and it has a soft texture and excellent cushioning properties. Another object of the present invention is to provide a wading material for vehicle seats that is excellent in practical value.

[0006]

Means for Solving the Problems A wading material for a vehicle seat according to the present invention, which has been made to solve the above-mentioned problems, comprises a wading body for a vehicle seat formed by forming a fibrous web composed of countless fiber filaments into a wading body having a predetermined thickness. In the above-mentioned material, the wadding body is made of a fiber web mainly composed of solid high-melting-point fiber filaments in which a surface of a core filament is coated with a lubricity-imparting resin film.

[0007]

Next, the present invention will be described in detail with reference to the drawings. In the figure, reference numeral 1 denotes a molding which is applied to a thick automobile sheet having a basis weight of about 350 g / m ² and a thickness of 10 mm obtained by partially entangling a fibrous web in which innumerable fiber filaments have been expanded by a carding machine. Wadding body. In the present invention, the wadding body 1 is made of a fiber web mainly composed of a solid high-melting fiber filament 2 in which a surface of a core filament 3 is coated with a lubricating resin coating 4. It has a characteristic configuration in the point.

That is, the above-mentioned high melting point fiber filament 2
As shown in FIG. 2, the melting point of a polyester fiber filament or a polyamide-based fiber filament is 150
A lubricating resin coating 4 on the surface of a core filament 3 made of a relatively fine denier solid body having a denier of not less than 5 ° C. and not more than 5 deniers.
Which is different from the conventional hollow fiber filaments used in wading materials for vehicle seats. With such a configuration, the internal air does not promote combustion as in the case of a hollow section, and the flame retardancy is improved. The lubricating resin coating 4 is formed by coating a material such as a silicone resin or a fluororesin having a melting point higher than the heat setting temperature and a low frictional resistance. Further, a fluororesin which is slightly expensive but excellent in lubricity and flame retardancy can be used.

It is preferable that such a solid high-melting fiber filament 2 is contained in the fiber web in a proportion of 60% by weight or more from the viewpoint of ensuring sufficient flame retardancy.
The entire amount may be the high melting point fiber filament 2. Further, in order to further improve the flame retardancy, a so-called flame retardant fiber such as an acrylic PVC fiber or a Poval PVC fiber may be contained in the fiber web at a ratio of 3 to 10% by weight. In this case, if the amount is less than 3% by weight, the flame retardancy cannot be sufficiently improved. If the amount is more than 10% by weight, the feeling and the sag resistance may be adversely affected.
A range of 0% by weight is preferred.

The wading body 1 is subjected to needle sticking and heat setting with a backing fabric 5 such as a nonwoven fabric attached to the back surface of the fiber web, so that the back surface of the wading body 1 as shown in FIG. By attaching the backing base fabric 5 that has been subjected to the needle sticking process together with the wadding main body 1, sewing workability and tensile strength can be enhanced. Further, the above-described needle sticking and heat setting are performed by adding a fiber web different from the fiber web obtained by mixing a hot melt fiber filament with a high melting point fiber filament serving as a main material on the back surface of the fiber web. As a result, a processed fiber web different from the wadding body 1 in which the high-melting fiber filaments are mixed with the hot melt fiber filaments and partially fused as shown in FIG. As shown in FIG. 4, the thickness is secured as that attached to the back of the fiber web, or the needle piercing process and the heat setting process are performed by attaching a pressure plate such as a soft polyurethane foam to the back surface of the fiber web. The thickness is secured by attaching such a polyurethane foam as the cushion backing layer 6 to the back surface of the wading body 1. Etc. so as to impart more excellent elasticity Te, it is also possible to use by adding a separate member, which also, of course, within the scope of the present invention.

In the case of using such a structure as in the case of the conventional wading material for a vehicle seat, the wadding body 1 is made of a solid filament having a core filament 3 coated with a lubricity-imparting resin film 4 on the surface thereof. Since the fiber web is made of a fiber web mainly composed of the melting point fiber filament 2, the fiber web is mechanically sufficiently entangled by needle piercing to have a peel strength, or a heat-adhesive fiber filament in the fiber web. Are mixed together and the fiber filaments are fused together at the time of heat setting to obtain a peeling strength which is much softer and more elastic, and the lubricating resin coating 4 The high-melting fiber filaments 2 coated with each other improve the slip at the contact point with each other, so that the restoring force when vertically pressed is effective. It will act, sag resistance is more good in comfortable become those par excellence. Moreover, since the fibrous web is mainly composed of the solid high-melting fiber filaments 2, the flame retardancy can be greatly improved as compared with the conventional one using hollow fiber filaments having a cross section. It will be. Furthermore, the wadding body 1 made of a fibrous web has the advantage of reducing or eliminating the use of polyurethane foam which has problems in terms of waste pollution and recycling and also has a problem in strength. is there.

A wading material for a thick automotive seat having a basis weight of about 350 g / m ² and a thickness of 10 mm, comprising a fibrous web mainly composed of 3 denier solid refractory fiber filaments whose surface is coated with a silicone resin film. Of the test pieces (n = 10).
Three were ignited, and the burning rate was 63 mm / min or less. On the other hand, under the same conditions, a test piece (n = 10) which differs only in that a hollow high melting point fiber filament was used
All of the combustion test results ignited and the burning speed was 72 mm / m
in or more, which confirms the excellent flame retardancy of the present invention. As a result of performing a combustion test on a test piece (n = 10) obtained by adding 10% by weight of flame-retardant fiber made of acrylic polyvinyl chloride fiber to the fiber web of the present invention, it was found that ignition occurred. The burning speed was 32 mm / min with only one piece, and it was confirmed that the flame retardancy was further improved.

[0013]

As apparent from the above description, the wading material for vehicle seats of the present invention reduces or does not use polyurethane foam which has problems in terms of waste pollution or recycling and also has a problem in strength. It has a soft texture and excellent cushioning properties, and also has excellent sag resistance even as a thick one, and also has excellent flame retardancy and extremely practical value It has the advantage of being expensive. Therefore, the present invention is extremely significant as a wading material for vehicle seats that has eliminated the conventional problems and contributes to the development of industry.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a preferred embodiment of the present invention.

FIG. 2 is a sectional view showing a high melting point fiber filament in the present invention.

FIG. 3 is a sectional view showing another preferred embodiment.

FIG. 4 is a cross-sectional view showing another preferred embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wadding main body 2 High melting point fiber filament 3 Core filament 4 Lubricity imparting resin coating 5 Backing base cloth

Claims (5)

[Claims] 1. A wading material for a vehicle seat in which a fibrous web composed of countless fiber filaments is formed into a wadding body (1) having a predetermined thickness.
With a lubricating resin coating on the surface of the core filament (3).
(4) A wading material for a vehicle seat, comprising a fibrous web mainly composed of a solid high melting point fiber filament (2) coated with (4). 2. The wading material for a vehicle seat according to claim 1, wherein the fibrous web contains a solid high melting point fiber filament (2) in a proportion of 60% by weight or more. 3. The wading material for a vehicle seat according to claim 1, wherein 3 to 10% by weight of flame-retardant fibers are added to the fibrous web. 4. The wading material for a vehicle seat according to claim 1, wherein the lubricity imparting coating (4) is a silicone resin coating. 5. The vehicle seat according to claim 1, wherein a backing base cloth (5) needle-punched together with the wadding body (1) is attached to a back surface of the wading body (1). Wadding material.