JPH082743B2 - Partial coloring method for fiber cloth in automobile interior materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention is an automobile in which a fiber cloth stretched on the surface of an interior material such as a ceiling of an automobile formed into a desired uneven shape is partially changed in color. The present invention relates to a method for partially coloring a fiber cloth in an interior material for automobiles.

[Prior art and its problems] As is well known, the method for coloring a fabric is a method in which dyeing is carried out after dyeing such as original dyeing, cotton dyeing, and yarn dyeing, and then making a white cloth. Dip dyeing method, method of putting paste into the dyeing solution and padding, printing method, jet spray method, etc., after applying the dyeing solution, the dye is fixed by steaming, and excess detergent and auxiliary agents that remain. There is an anti-dyeing method in which sizing agent components and the like are washed off with water and then tenter-dried, and each requires a very complicated process.

On the other hand, the skin of a molded ceiling of an automobile has conventionally been provided with a plastic film such as a PVC film, or a fabric with a cloth. Cloth is used by preference. Then, in order to give a higher-grade feeling, the color tone of the cloth may be divided into a so-called two-tone color by dividing it into a front color and a rear color. Conventionally, when color coding is performed in this way, the front part and the rear part are each molded into a desired shape, and cloths dyed in different colors are pasted on the surfaces thereof, and a joining member is used for the ceiling part inside the vehicle. Are joined together. That is, in order to make the colors different from each other, conventionally, the front part and the rear part are purposely molded separately, and cloths of different colors are adhered to the front part and the rear part, and the both are joined at the ceiling so that they are integrally formed. It was.
For this reason, there is a problem that the number of parts is increased and it takes time to form and join.

[Means for Solving Problems] However, with the recent diversification of consumer needs and progress of fashion, automobile interior parts are required to have a technology for easily and inexpensively performing partial color change of molded articles from color design. SUMMARY OF THE INVENTION The present invention, however, has been earnestly studied for the purpose of solving the above problems, and the above-mentioned problems have been solved by ameliorating the above-mentioned drawbacks with a pigment-containing paint.

That is, the present invention is characterized in that a fiber cloth is stretched on the surface of a molding substrate molded into a desired uneven shape, and a color is partially changed by spraying or applying a urethane-based paint on a part thereof. In addition, since the paint is uniformly dispersed and adhered to the fiber cloth, it is possible to satisfy the skin quality performance for automobiles such as light fastness and rubbing fastness without impairing the texture of the fiber cloth by using the brushing together. I will get it.

First, the urethane-based paint used in the present invention is preferably a two-component type, and as its main component, acrylic polyol is preferable from the viewpoint of ensuring flexibility of the coated cloth, but polyester polyol can also be used.

Further, it is necessary to select and use a coloring pigment having good light fastness as the coloring pigment to be mixed with the main agent.

Isocyanate is used as the curing agent, but it is desirable to use hexamethylene diisocyanate, isophorone diisocyanate, or the like in order to enhance the friction fastness after coloring.

Further, the reaction curing time needs to be adjusted according to the processing process conditions, but is mainly adjusted depending on the amount of the catalyst compounded.

In addition, it is important to optimize the viscosity of the coating material in order to prevent the coating material from being uniformly applied and dispersed on the fiber cloth and to prevent it from seeping out to unnecessary portions. This can be adjusted mainly by the blending amount of a solvent such as thinner.

[Example 1] Next, Fig. 1 to Fig. 1 are examples of color-changing coloring of a polyester ceiling-raised tricot skin stretched as a fiber cloth on a molded ceiling.
Description will be given with reference to FIG. FIG. 1 shows a molded ceiling in which a fiber fabric 2 which is anti-dyed in a beige color by a raised tricot is stretched by vacuum bonding on the surface of a molded base material 1 for a ceiling. In the figure, 6 is a urethane foam layer. When changing the color of the front part 4 with the boundary line 3 as a dark brown color, acrylic polyol was used as the main agent and hexamethylene diisocyanate was used as the curing agent, and the combination with the thinner was mixed in a weight ratio of 5: 1:
A two-component dark brown urethane paint was prepared so as to have a viscosity of 25, and its viscosity was set to 30 ° C and 8.0 seconds Iwata IHSCUP. This was masked on the rear part 5 and a masking tape was attached to the boundary line 3 with the front part 4 and then air spray applied at a rate of 80 g / m ^{2 on} the surface of the fiber fabric of the front part 4. Immediately after that, before the drying, the surface was uniformly brushed with a roller brush to eliminate the partial coating unevenness of the paint and the accumulation of the paint at the tip of the pile to eliminate the uneven coating and the uneven color tone.

This was dried in an oven at 85 ° C for 30 minutes to completely solidify the paint. The results of the texture performance test conducted on this product are shown in Table 1 below, and the various targets required for a passenger car ceiling were achieved.

[Example 2] Next, an example of coloring and coloring a part of the fiber cloth stretched on the surface of the molded door trim will be described with reference to Figs. 4 to 6.
Polyester textured yarn A textile fabric 10 that has been dyed in a beige color with a textile fabric and has no surface raising is adhered to the door trim forming base material 11. When the intermediate height portion 12 in FIG. A dark brown paint was prepared by using urethane paint, acrylic polyol as the main agent, and isophorone diisocyanate as the curing agent, and the compounding ratio with thinner was 5: 1: 30, and the viscosity thereof was 30 ° C. 8.5 seconds Iwata LHBCUP. This is masked on the other parts of the door trim skin, and masking tape is attached to the boundary lines 13 and 14 with the intermediate height part.
Apply air spray at a rate of g / m ² . After that, the coated surface is uniformly brushed with a flat brush to perform color change coloring without coating unevenness and color tone unevenness. As a result of carrying out a texture performance test of this product, a satisfactory value was obtained as shown in Table 2 below.

It has been known that plastic films such as PVC films and isodiexion molded products are color-changed by paints, but such problems are caused by the texture and color uniformity of the fabric interior skin. There are no such cases.

[Effects of the Invention] As described above, according to the method of partially coloring the fiber cloth in the automobile interior material according to the present invention, the paint is evenly and uniformly applied by brushing, and the smooth feel of the fiber cloth surface is maintained. It does not spoil the situation. For this reason, there is an effect that fashioning and upsizing of the interior of the vehicle by the multicolor design can be easily performed at low cost.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a perspective view of a molded ceiling, Fig. 2 is a longitudinal sectional view thereof, Fig. 3 is a partially enlarged view of Fig. 2, and Fig. 4 is a molded door trim. FIG. 5 is a longitudinal sectional view thereof, and FIG. 6 is a partially enlarged view of FIG. 1,11 …… Molding base material, 2,10 …… Fiber cloth.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 61-95655 (JP, U) Rikai Sho 55-114771 (JP, U) Japanese Patent Sho 36-3135 (JP, B1)

Claims (1)

[Claims] 1. A fiber cloth is stretched on the surface of a molding substrate molded into a desired uneven shape, and a urethane-based paint is sprayed or applied to a part thereof to partially change the color,
A method for partially coloring a fiber cloth in an automobile interior material, characterized in that the coating surface is uniformly brushed before being dried to disperse the coating material.