JPH02162132A - Nap natured inner packaging material for automobile - Google Patents

Abstract

PURPOSE:To make a surface smooth and of high density by processing needle punch work on the weave made up from mixed fibers composed of high contraction natured polyester with a specified denier which develops three dimensional crimps by heat treatment, and of high contraction natured polyester with a specified denier which exhibits a contraction rate equal to or more than a specified percentage by heat treatment, heating the weave so as to be contracted, treating it so that it is dyed, and thereby impregnating it with resin binder thereafter so as to be napped. CONSTITUTION:A non-woven mat is formed by the step of processing needle punch work on a weave layer made up from mixed fibers composed of 60 to 70% high contraction natured polyester fibers with 1 to 3d (denier) which develop three dimensional crimps by heat treatment, and of 30 to 50% high contraction natured polyester fibers with 0.5 to 1.5d which have a dimensional rate equal to or more than 20%. Thus, the mat is made to develop and contract three dimensional crimps, and is treated so that it is dyed so as to be impregnated with 5 to 20% resin binder by weight thereafter. Following which, napping process is performed so that a nap natured inner packaging material for sutomobile such as a peach skin natured, a suede natured and a velour natured one is obtained. By this constitution, napping is easily processed, and furthermore, it is possible to contrive to thereby enhance wear resistance, light resistance and molding workability.

Description

[Detailed description of the invention] [Industrial application field] The present invention is an automobile ceiling material as an automobile interior material.

This invention relates to napped-looking automobile interior materials such as peach skin, suede, and velor used for interior parts such as door trims and rear packages.

[Conventional technology]

Conventionally, laminated materials of textured polyvinyl chloride sheets and polyurethane sponge, woven fiber cloth, or raised fabrics thereof have been used as automobile interior materials, but in recent years, lightweight materials have been used.
Due to lower prices and an increasing trend toward fiber production, non-woven fabric base materials are increasingly being used.
After punching, an interior material is used that is impregnated with a binder, but due to the trend toward higher quality, expensive brushed knitted fabrics are also required for non-woven fabrics, which is why non-woven fabrics are used as the base material. Although artificial leather has been used, products made by wet urethane impregnation with a fine denier are still expensive and have poor light resistance.

Furthermore, V1411II! As seen in Publication No. 111-136730, an attempt has been made to apply a raised finish to the surface of a non-fused sheet made of a thermoplastic sheet material and a fiber web. There are disadvantages such as sexual problems.

[Problem to be solved by the invention]

Therefore, as a result of extensive research in order to solve the above-mentioned problems with the raised nonwoven fabric interior materials, the present invention has developed a mixed fiber using fine denier high shrinkage composite fibers and thinner fine denier high shrinkage fibers. By adding crimps to the needle-punched nonwoven fabric, the surface is relatively smooth and dense without any unevenness, and the texture is soft and stretchy, and the brushed finish creates peach skin.

Abrasion resistant with short piles such as suede and velor.

The present invention was completed by discovering a nap-like automobile interior material that satisfies light resistance and moldability.

[Ninth means to solve the problem]

The present invention provides a method for generating three-dimensional crimp through heat treatment.
~8d high shrinkage polyester conjugate fiber (hereinafter referred to as high shrinkage conjugate fiber) 0, 5 to 1.5 d high shrinkage polyester fiber having a shrinkage rate (dimension) of 50 to 70cm and a width of 30 or more by heat treatment (hereinafter referred to as high shrinkage fiber) A needle-punched nonwoven fabric mat formed from 30 to 5 (l) is subjected to heat shrink treatment to develop a three-dimensional crimp and shrink, and after dyeing, a resin binder of 5 to 5 God (weight ratio) is applied. By impregnating and brushing, the present invention provides peach skin, suede, velor, and other raised-looking automobile interior materials with excellent wear resistance, light resistance, and moldability at low cost.

The high-shrinkage composite fiber used in the configuration of the present invention is a fiber with a fineness of 1 to 8 deniers, and if the fineness exceeds 3 deniers, it can be used satisfactorily as an automobile interior material with a raised appearance and texture. It becomes something that does not exist. Further, if the fiber is less than 1 d, problems arise in the spinnability of the fiber, and if the fiber is wound during opening, the commercial value is reduced due to the occurrence of unevenness, making it impossible to obtain a satisfactory product.

Next, the blend t of the high shrinkage composite fiber is preferably 50 to γ0 (weight ratio); if it is less than 501, the abrasion resistance and moldability are poor, and if it is more than 704, three-dimensional crimp occurs frequently. Spiral-like unevenness is formed on the surface, which gives an unfavorable appearance when raised.

On the other hand, high-shrinkage fibers with a fine denier appearance are desired, but a fineness of 0.5 d or less causes problems in spinnability, making it impossible to spin with a normal web forming machine.
If it is less than lid, the appearance will be unfavorable when raised.

The heat treatment that follows after needle punching is carried out at a temperature above which three-dimensional crimp and shrinkage occurs in the blended fibers, but below a temperature at which one component of the high-shrinkage composite polyester fibers melts. .

Further, the dyeing process may be any commonly performed dyeing process for polyester, and dyeing methods such as dyeing with disperse dyes, carrier dyeing, and pad dyeing may be used.

The cloth mat obtained in the above manner is coated with a resin binder such as acrylic, ethylene vinyl chloride, etc. by 5 to 50% of the BQ'AC solid distribution layer.
If it is less than the width, the pile will be uneven during the brushing process and the abrasion resistance will be poor. Moreover, if the width exceeds 20, a raised texture will not be obtained and a problem will arise in moldability. Depending on the use, it may also be used in combination with a raising aid.

The raising process after resin processing may be either manual raising or mechanical raising, but in the case of short-pile hair such as peach skin, suede, velor, etc., processing using an emery raising machine is appropriate.

〔Example〕

Below, the invention! Examples will be described in detail.

High shrinkage polyester composite fiber 11sdX51f1110
4 and high shrinkage polyester fiber 0. l5dX118, f
The mixed fibers with i 404 were uniformly opened and the laminated fiber web was needle punched from the top and bottom with a total number of punches of 400 P/l to obtain a needle punched nonwoven fabric mat with a basis weight of 1 g o q/-6. Next, this needle-punched nonwoven fabric mat was heat-treated at 130°C x 511 inches to obtain a fabric weight of 170 y/I with an area shrinkage rate of 304 and an apparent density of 0.57 cum, and then dyed with a disperse dye. Then, acrylic acid ester resin (N88 (Takeda Pharmaceutical Co., Ltd.) concentration 454) was impregnated and adhered to lo% (solid content) to form a dense fiber mat with a smooth surface.
Furthermore, a raised automobile interior material, so-called suede, having short pile-like raised fibers on the surface was obtained using an emery processing machine.

[Comparative Example 1] A spread laminated web formed of polyester fibers 3dX51+n+1004 was loaded from the top and bottom with a total loading of 400P/C! 12
A needle-punched nonwoven fabric base material with a basis weight of 1709/- was obtained by needle-punching.Then, the same dyeing and resin binder processing as in the example was carried out to obtain an automobile interior material.

[Comparative Example 2] Emery processing was performed on the automobile interior material obtained in Comparative Example 1, but the quality was not perfect, there was a problem with tax exemption, and the flexibility was poor, making it unsuitable as an automobile interior material. there were.

The results of tests on the 204 modulus, taper abrasion resistance, and appearance of the automobile interior materials obtained in Examples and Comparative Example 1 are shown below.

Taper abrasion resistance: Test conditions C5φ10250f load 2
Those that do not rotate at 00 are considered defective.

〔Effect of the invention〕

As described above, the present invention includes fine denier high shrinkage composite fibers,
Because it is made of a mixed fiber blend with high shrinkage fibers of Fine Danil, which is thinner than that, the surface is smooth with no unevenness and has a high degree of strength, and the resistance of the Km fibers when raising is low, and the fibers are bonded with resin. Peach skin that is easy to brush.

Suede, velor! It exhibits the appearance of Til1, has excellent wear resistance, and has three-dimensional crimp, so it has the effects of Koshine, such as small modulus and excellent moldability.

Claims (1)

[Claims] (1) Generates three-dimensional crimp by heat treatment 1-
50-70% of 3D high shrinkage polyester composite fiber,
0.5 to 1.0, which shows a shrinkage rate of 20% or more by heat treatment.
The web layer is made of mixed fibers with 30-50% of 5D highly shrinkable polyester fibers, which is needle-punched, heat-shrinked, dyed, and impregnated with 5-20% (by weight) of a resin binder. , a nap-like automobile interior material characterized by a raised web layer surface.