JP2000282354A - Interior automotive trim skin material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an interior automotive trim skin material having molding processability and light fastness, capable of developing a dense raised surface, having a high-class feeling and producible at a low cost. SOLUTION: This interior automotive trim skin material comprises a nonwoven fabric having a raised surface finished by needle punching processing. The nonwoven fabric comprises mixed filters of polyester dyed fibers having 0.5-2 d and polyester spun dyed fibers having 2-4 d and the mixing ratio thereof is 90-60% of the polyester spun dyed fibers to 10-40% of the polyester dyed fibers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a car interior skin material used as a skin material for an interior of a ceiling, a door trim, a rear package, a trunk and the like of an automobile.

[0002]

2. Description of the Related Art Conventionally, as a material of this kind of skin material, a non-woven fabric (a velor-like, suede-like, peach-skin-like or the like) having a raised surface by a needle pile (hereinafter referred to as NP) to raise the surface to a short pile. Hereinafter, this is referred to as an NP brushed nonwoven fabric).

[0003] The NP brushed nonwoven fabric is inferior to the brushed knitted woven fabric in softness and luxurious feel, but is light in weight, inexpensive, and excellent in moldability with a substrate. I have. In particular, in areas where design and design are required as the skin material, NP brushed nonwoven fabric made of 100% polyester (hereinafter referred to as PET) soaked fiber having excellent color hue, weather resistance, light resistance and the like is used. Used.

[0004]

In recent years, along with the demand for lowering the price of automobile interior materials and improving design and design, there is a demand for a skin material having a lower price and a more luxurious feeling. Have been.

Therefore, the present inventor has proposed that a skin material having a soft feel and a luxurious feel substantially equivalent to a brushed knitted woven fabric is subjected to NP processing using ultrafine PET spun fibers on the constituent fibers of the nonwoven fabric. A study was made on the production of an NP brushed nonwoven fabric exhibiting a dense brushed surface with ultrafine PET spun fibers.

However, a very fine PE having a fineness of less than 2d
T-spun fibers cannot be produced stably because the pigment used for coloring the stock solution breaks in the melt-spinning process. It was found that the price of the skin material could not be reduced because the price was high.

[0007] Next, an NP brushed non-woven fabric is produced using ultra-fine PET colorless fibers of less than 2 d which are inexpensive and can be melt-spun compared to the original fibers, and then the NP brushed non-woven fabric is dyed. A material (hereinafter, referred to as a post-dyed processed skin material) was produced.

However, when the post-dyed skin material is subjected to heat and pressure molding with the base material, the post-dyed skin material is elongated, and not only whitening and color unevenness due to color loss occur,
Compared to the PET nonwoven fabric, the lightfastness was also inferior, and it was found that it did not become a product.

Accordingly, the present invention provides a NP brushed non-woven fabric by mixing a relatively fine PET fine fiber having a specific fineness as a main constituent fiber and mixing a fine PET dyed fiber having a specific fineness at a specific ratio as a secondary constituent fiber. By configuring, it has moldability and light fastness required as a skin material,
It is an object of the present invention to provide a car interior skin material that exhibits a desired dense brushed surface and has a high-class feel and can be manufactured at a low price.

[0010]

An automobile interior skin material according to the present invention is an automobile interior skin material made of a nonwoven fabric whose surface is brushed by NP processing.
0.5d-2d PET dyed fiber and 2d-4d PET
It is composed of mixed fiber with original fiber, and the mixing ratio is
The PET dyed fiber is 10% to 40% and the PET dyed fiber is 90% to 60%.

In the present invention, the fineness of the PET dyed fiber is in the range of 0.5d to 2d, more preferably 1d to 2d. If the thickness is smaller than this range, there is a problem in fiber spinnability, winding or unevenness occurs at the time of opening, and stable production tends to be impossible.On the other hand, if the thickness is large, a desired brushed surface appears. It tends to be difficult.

The mixing ratio of the PET dyed fiber and the PET spun fiber is preferably 10% to 40%, more preferably 2%.
It is in the range of 0% to 40%, and the latter is in the range of 90% to 60%, more preferably in the range of 80% to 60%.

The reason why the mixing ratio is specified within the above range is that PE
If the T-dyed fiber is less than this range, a dense brushed surface tends to be difficult to manifest, while if it is too large, not only will there be a problem in spinnability during fiber web formation, but also the modulus of length and width will increase. This is because tears and wrinkles are likely to occur during molding with the base material, and the moldability tends to decrease, and the light fastness tends to decrease.

Further, the fineness of the PET-dipped fiber is 2d-4
It is specified in the range of d that if the diameter is smaller than this range, stable production of the fiber itself is impossible, and even if it can be produced, it is expensive. This is because the transverse modulus tends to be large and a problem occurs in molding processability. On the other hand, when the width is large, it becomes difficult to obtain a desired dense brushed surface, and the sense of quality tends to decrease.

In the present invention, PE of the same fineness or fineness is used in a part of the mixing ratio of the polyester dyed fibers.
It is preferable to incorporate T colorless fibers. Thus, PET
Incorporating colorless fibers not only makes it even cheaper,
This is because a skin material suitable for the interior of a part where design is not relatively required, such as a trunk room and a rear package, can be obtained.

It is preferable that at least one of the front and back surfaces of the nonwoven fabric is coated with a resin binder.
This is because the application of the resin coating improves the wear resistance and the handleability.

Further, the basis weight of the nonwoven fabric is usually 90 g / m ^{2 to} 230 g / m ² , more preferably 95 g / m ² .
/ M ² -200 g / m ² is preferred in terms of moldability.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The PET dyed fibers having a fineness of 0.5d to 2d to be used for the automotive interior skin material of the present invention are those obtained by dyeing a general PET fiber (colorless) with a disperse dye or carrier dyeing. Alternatively, a pad-dyed product is used. In addition, as the PET-dipped fiber having a fineness of 2d to 4d, a fiber obtained by adding a general pigment is used.

In this case, by appropriately combining the fineness of the PET dyed fiber and the PET spun fiber within the above range, a skin material having a desired raised surface such as velor tone, suede tone or peach skin tone is produced. be able to.

The hue of the PET dyed fiber and the PET dyed fiber may be the same color or different colors depending on the design required for the skin material. , A deep color can be exhibited, and a brushed surface with a higher quality can be obtained.

Further, in the coating process with a resin binder applied to the nonwoven fabric, either the front surface (brushed surface) or the back surface may be used as the processed surface. If the processed surface of the surface of acrylic resin having the light resistance when 5g / m ² ~10g / m ² coating, it is possible to improve the light resistance without impairing appearance and texture. When the processing surface is the back surface, an acrylic resin, an ethylene-vinyl chloride resin, or the like is used in an amount of 10 g / m ² to 10 g / m ² .
When the coating amount is 30 g / m ² , the wear resistance can be further improved.

[0022]

EXAMPLES Examples of the present invention will be described below in comparison with comparative examples, but the present invention is not limited to these examples.

PET dyed fiber (light beige) 1.5d
× 51mm35%, PET-dyed fiber (beige) 3
An NP brushed nonwoven fabric having a brushed surface with a fiber basis weight of 150 g / m ² is subjected to NP processing of 500 P / cm ^{2 in} total from the top and bottom of a fiber web obtained by uniformly opening and laminating a mixed fiber of d × 51 mm and 65%. Obtained. Then, the surface of the NP brushed nonwoven fabric (brushed surface) is foamed with an acrylate resin emulsion adjusted to a concentration of 10%, and coated to a solid content of 5 g / m ^2.
Heat treatment was carried out at 5 ° C. × 5 minutes to produce a car interior skin material having a basis weight of 155 g / m ² .

(Comparative Example 1) A fiber web in which a mixed fiber of 3d × 51 mm 75% PET dyed fiber (light beige) and 3d × 51 mm 25% PET-dipped fiber (beige) was uniformly opened and laminated was taken from above and below. Total number of shots 450P /
NP processing of cm ² , weight of 140 g / m ² NP
A brushed nonwoven fabric was obtained. Next, the surface of this NP-brushed nonwoven fabric was coated with the same resin as in the example, and the basis weight was 145.
A g / m ² automotive interior skin material was produced.

(Comparative Example 2) A fiber web in which PET-dyed fiber (light beige color) 3d × 51 mm 100% was spread and laminated was subjected to NP processing of 500 P / cm ² from the top and bottom from the top and bottom to obtain a basis weight of 165 g / m ² . An NP brushed nonwoven fabric was obtained.
Then, an ethylene vinyl chloride resin emulsion was adjusted and foamed on the surface of the NP brushed nonwoven fabric to a concentration of 25%, and the solid content was 2%.
After coating to 5 g / m ² ,
Heat treatment was carried out at 5 ° C. × 5 minutes to produce a car interior skin material having a basis weight of 190 g / m ² .

Next, after measuring the tensile strength and elongation using the skin material samples of the above example and Comparative Examples 1 and 2, the base material was compression-molded with a molding die to form the automobile interior ceiling material. Table 1 shows the results of the following tests on the moldability, light resistance, and appearance of the fabricated LED. Molding workability test: A molded ceiling was prepared using the sample, and the finished state was judged. A sample in which the nonwoven fabric was torn or incurred was regarded as defective. Light fastness: Fade meter 83 ° C. × 200 hours Appearance: A material in which the surface of an automobile interior material exhibited a velor-like appearance was regarded as good, and a material which did not manifest the surface as velor-like.

[0027]

[Table 1]

As is clear from Table 1, it was found that the examples of the present invention were more satisfactory in molding workability, light resistance and appearance than the comparative examples 1 and 2.

[0029]

According to the automobile interior skin material of the first aspect, the raw material fiber can be inexpensive, the production cost can be reduced, and the desired dense brushed surface can be manifested by NP processing. A luxurious appearance can be obtained. In addition, it has a small modulus, is excellent in moldability, has light fastness, can be deep-drawn, and can be used particularly for ceiling interiors where design is required.

According to the vehicle interior skin material of the second aspect, further reduction in price can be achieved, and according to the vehicle interior skin material of the third aspect, the wear resistance can be further improved. it can. Further, according to the automobile interior skin material of the fourth aspect, the moldability can be further improved.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) D04H 1/46 D04H 1/46 Z F Term (Reference) 3D023 BA01 BB03 BB08 BC00 BD01 BD03 BE04 BE06 BE13 BE31 4F100 AK01B AK01C AK25 AK41A AK42 BA01 BA02 BA03 BA06 BA10B BA10C DG15A DG17A DJ01 EC09A EH462 EJ022 EJ412 GB33 HB40A JA13A JK13 JL01 JL10A JM01 YY00A 4L047 AA21 AA28 AB02 BA03 CA19 CB00 CB00

Claims (4)

[Claims] 1. An automobile interior skin material comprising a nonwoven fabric whose surface is brushed by needle punching, wherein the nonwoven fabric comprises polyester dyed fibers of 0.5d to 2d.
d to 4d, consisting of a mixed fiber with a polyester spun fiber, and the mixing ratio thereof is 10% or more.
An automobile interior skin material comprising 40% to 90% to 60% of native polyester fibers. 2. The automobile interior skin material according to claim 1, wherein a polyester colorless fiber is blended in a part of the mixing ratio of the polyester dyed fiber. 3. The automotive interior skin material according to claim 1, wherein a resin coating is applied to at least one of the front and back surfaces of the nonwoven fabric. 4. The nonwoven fabric has a basis weight of 90 g / m ² to 23.
Automotive interior skin material of claim 1, 2 or 3 is 0 g / m ^2.