JPS61141542A - Composite nonwoven interior material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a composite nonwoven fabric interior material used for the interior of automobile ceiling materials, trunk rooms, door trims, building wall materials, and the like.

(Prior art) Conventional interior materials of this type include laminated materials of textured polyvinyl chloride sheets and polyurethane sponges, fiber knitted and woven fabrics or their raised fabrics, and floating materials in which short fibers are flocked to various resin sheets such as vinyl chloride sheets. -Processed products, etc. are used. However, in recent years, in applications such as automobile interiors,
Weight reduction and cost reduction 1. There is an increasing trend toward fiber production, and 1. nonwoven fabric base materials are increasingly being used. Particularly, ceiling materials, trunk compartments, rear packages, door trims, etc. are usually molded using a hot press machine, and the use of nonwoven fabrics is becoming more and more popular due to its good processing adaptability. There is a growing movement to use non-woven fabrics as an alternative to so-called vapour-adjusted fabrics, which are obtained by brushing the surface of knitted fabrics that have traditionally been used as ceiling covering materials for relatively high-end cars. .

(Problems to be Solved by the Invention) On the other hand, in recent years, there has been a trend in the increasing number of cars with so-called sunroofs, which have an opening in the ceiling inside the car.
As a required characteristic of ceiling skin materials for sunroof specifications, water repellency to repel water droplets and the like that enter from the outside has come to be required.

When laminating such a skin material onto a steel plate, plastic sheet, plastic foam, felt base material, etc., a water-soluble adhesive such as urethane, vinyl chloride, or vinyl acetate is applied and laminated. However, if the applied adhesive oozes out to the front side, it is a major problem because the texture and appearance are significantly impaired.

(Means for Solving the Problems) In view of the current situation, the present invention provides: 1 a nonwoven fabric skin material;
The water-soluble adhesive used for bonding with base materials such as iron plates, plastic sheets, plastic foam, phenol-impregnated felt 1 and resin-impregnated cardboard is completely retained at the adhesive interface,
To provide an interior material made of a composite nonwoven fabric that does not deteriorate the texture and appearance of the front surface and has water repellency.

That is, the present invention is an integrated composite of a needle-punched type water-repellent nonwoven fabric sheet treated with a fluorine-based or silicone-based water repellent, and a needle-punched type super water-absorbent nonwoven fabric sheet containing at least 10% or more of super-absorbent fibers. By using a nonwoven fabric sheet as an interior skin material, a composite nonwoven fabric interior material is obtained that has a good texture on the surface, has a beautiful appearance, prevents resin from seeping out, and solves the problem of water leaching. 0 (Example 1) The present invention will be described in detail below based on Examples.

A uniformly opened and layered fiber mat made of polyester fiber 3 (100% LX51) dyed in advance in a desired color, for example, a silver dapple color, is punched in the vertical direction at a driving depth of 9 mm using a needle punch machine. more than 150 each
After needle punching with a punch/-, continue to needle punch with a punch depth of 7 and a punch/d (9) from above only to obtain a nonwoven fabric with a fabric weight of 185 t/rrl and a thickness of 1 tsm. Ta. Next, this nonwoven fabric was coated with Geranex IF-2, which had a nonvolatile concentration of 2%.
(7-based water repellent; manufactured by Matsumoto Yushi Seiyaku ■) After being immersed in a diluted solution, it was adjusted to WPUIQOl using a pair of squeezing rolls, and then subjected to dry heat treatment at a drying temperature of 150°C for 5 minutes.
I got it.

Next, polyester 3a x 51m 50%, Lanseal?
3tLX51j (Lanseal 7 is a super-absorbent acrylic fiber that has a water absorption capacity of approximately 150 times its own weight. Made by Nippon Exlan Kogyo ■) Uniformly opened fibers made of 50%
The laminated fiber mat was punched 100 times each from the top and bottom directions to a depth of 101 using a needle punch machine.
- Perform needle punch processing with 1 stitch weight 8 ot/nl
A super absorbent nonwoven fabric 2 having a thickness of LOW was obtained.

The thus obtained water-repellent non-woven fabric 1 and super-absorbent non-woven fabric 2 are laminated as shown in FIG. By integrating, a composite nonwoven fabric interior material 3 having a total basis weight of 2652/m'' and a thickness of 2.3 mm was obtained.

This composite non-woven fabric interior material 3 is made by applying a wet vinyl acetate adhesive to a phenol-impregnated felt base material pre-shaped into a ceiling shape at an amount of about toOt/yl and bonding it together. The above-mentioned interior material 3 does not leak to the surface layer even if it is held and pressed strongly with one finger, resulting in a beautiful finish without deteriorating the texture and appearance.
Since it has very good air permeability, the water content of the adhesive agent 1 can be sufficiently dried by natural drying.

The adhesive strength between the base materials of the composite non-woven fabric interior material and felt laminate base material of the present invention is strong enough to cause material failure, and the surface water repellency is J-K3-L1092,
It had an excellent water repellency test of 90 to 100 in accordance with the Shower Method, and was sufficiently durable for use as a ceiling skin material for sunroof specifications, which requires a high degree of water repellency.

(Example 2) As shown in Figure 3, polyester 3dX51j 100%
A fiber mat 4 with a uniform Rmm layer and a basis weight of 28
t/rr? After laminating the super absorbent nonwoven fabric 5 (Benliese Super Love Super Absorbent Cellulose Nonwoven Fabric manufactured by Asahi Kasei Kogyo ■), it was punched to a depth of 9 mm using a needle punch machine.
Then, perform needle punching with 10G punch/d from the top and bottom directions to obtain a fabric weight of 90t/rr? A super absorbent nonwoven fabric 6 having a thickness of LOm was obtained.

Next, as in Example 1, the six super-absorbent nonwoven fabrics were laminated with the water-repellent nonwoven fabric 1 as shown in FIG. 2, and then entangled and integrated using a needle punch machine to obtain a composite nonwoven interior material 7.

Similar to Example 1, this composite nonwoven fabric interior material 7 had excellent bonding workability, dry finish, water repellency, and the like.

By the way, the fibers used for the composite nonwoven fabric interior material in each of the above-mentioned examples include polyester, polyamide, polyolefin, polyacrylic, rayon, fluoro-linen,
Commercially available fibers such as vinylon, vinyl chloride, etc. can be used. (Effects of the Invention) Since the present invention has the above structure, the water-repellent layer prevents water from permeating, and even if water or adhesive moisture Even if it leaks, it is absorbed and retained by the super-absorbent layer and does not easily leak to the surface layer, so it is possible to maintain a beautiful texture and appearance without staining the surface of the interior material. It also has excellent breathability,
Water contained in the adhesive is also removed by air drying, and the surface water repellency has an excellent effect of 90-100 in the water repellency test specified in J-Ko 5-L-1092, shower method.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a composite nonwoven fabric interior material showing one embodiment of the present invention, FIG. 2 is a schematic diagram of an embodiment of the same material, and FIG. 3 is a schematic diagram of a super absorbent nonwoven fabric used in the present invention. 1... Water-repellent nonwoven fabric 2.5.6... Super water-absorbent nonwoven fabric 3.7... Composite nonwoven fabric interior material 4... Fiber mat

Claims (1)

[Claims] A needle-punch type water-repellent non-woven fabric sheet treated with a water-repellent water-repellent fiber treatment agent such as a fluorine-based or silicon-based fiber treatment agent, and a needle-punch type super water-absorbent non-woven fabric sheet containing at least 10% or more of super-absorbent fibers. Composite nonwoven fabric interior material consisting of a two-layer laminated structure.