JPH0192481A - Surface coloration of fiber cloth - Google Patents

Abstract

PURPOSE: To uniformly dye the surface of a fiber fabric without spoiling its hand feeling by spraying or coating a urethane-based coating on the surface of a fiber fabric and successively brushing the surface. CONSTITUTION: This method for coloring the surface of a fiber fabric is to spray or coat a urethane-based coating material onto the surface of a fiber fabric, successively brushing the surface to disperse the coating material into fine particles and bring gigging motion to be free, keep hand feeling inherent to the fabric and soft touch feeling to the skin and enable to dye the surface with solving unevenness of coating and hue. By this method, the surface color of the fiber fabric can be easily changed and is excellent in light resistant fastness and heat resistance. As the urethane-based coating material, it is preferable to use an acryl polyol as a main ingredient from the point of a soft finishing and hexamethylene diisocyanate, etc., to enhance fastness against friction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for coloring the surface of a fiber fabric, which allows the surface of the fiber fabric to be easily changed in color after weaving.

[Conventional technology and its problems] Generally, the methods of coloring fabric include dry dyeing and cotton dyeing.

A method of making cloth after yarn dyeing such as yarn dyeing, a method of dipping white fabric after making a cloth, a method of adding a sizing agent to the dye solution and padding it, a printing method, a jet spray method, etc. After the dye has been applied, steaming is used to fix the dye and it remains even longer.

There is an anti-dyeing method in which auxiliary components are removed by washing with water and drying with a tenter, and both require extremely complicated steps.

Therefore, equipment and costs were required.

On the other hand, surface coloring by spraying or applying paint is easy and low-cost and is often used for building materials, metal products, plastic parts, etc.; however, when this paint-based coloring method is applied to fabrics, one coloring There have been problems in that non-uniformity is noticeable and unevenness is often formed, and the surface is hardened, impairing the feel of the fabric. For this reason, there have been no cases in the past where fabrics have been colored by adhesion of paint.

[Problems and means to solve them] The present invention aims to solve the above problems.

This method of coloring the surface of a fiber fabric is characterized by spraying or applying a urethane paint onto the surface of the fiber fabric and then brushing the surface.

[Operation] By brushing, the paint adhering to the surface of the fiber fabric is dispersed into fine particles, allowing the movement of the countless naps that stand up on the surface of the fiber fabric to maintain its texture and eliminate uneven coloring.

[Example] Next, an example will be described in which a raised polyester tricot skin is stretched as a fiber cloth on a molded ceiling for an automobile.

FIG. 1 shows a molded ceiling in which a fiber fabric 2 made of polyester filament and dyed beige with brushed tricot is stretched on the surface of a molded base material 1 for the ceiling by vacuum bonding.

Note that 6 in the figure is a foamed urethane layer. When changing the color of the front part 4 that crosses this boundary line 3 to dark brown, acrylic polyol is used as the main ingredient, hexamethylene diisocyanate is used as the curing agent, and the combination with thinner is made at a weight mixing ratio of 5:1:25. so that it becomes 2
Created a liquid-based dark brown urethane paint.

The viscosity was designated as Iwata rH3cUP at 30°C for 8.0 seconds.

After masking the rear part 5 and pasting a masking tape on the boundary line 3 with the front part 4, air spraying was applied to the surface of the fiber fabric of the front part 4 at a rate of 80 g/m2. Immediately before drying, the surface was thoroughly brushed with a roller brush to eliminate uneven local coating of the paint and accumulation of paint at the tip of the pile, thereby eliminating uneven coating and uneven color tone.

This was dried in a dryer at 85° C. for 30 minutes to completely solidify the paint. The results of the texture and performance tests performed on the molding were as shown in the robe, and we were able to achieve the various goals necessary for the ceiling of a passenger car.

First of all, the urethane paint used in the present invention is preferably a two-component type, and the main component thereof is preferably an acrylic polyol in order to ensure the flexibility of the coated fabric, but polyester polyols can also be used.

In addition, it is necessary to select and use a coloring pigment to be mixed with the main ingredient that has good light fastness.

Incyanate is used as the curing agent, and it is preferable to use hexamethylene diisocyanate, isophorone diisocyanate, etc. in order to improve the abrasion fastness after coloring.

Further, the reaction curing time needs to be adjusted according to processing conditions, but it is mainly adjusted by adjusting the amount of catalyst blended.

In addition, it is important to optimize the viscosity of the paint in order to uniformly apply and disperse the paint on the fiber fabric and to prevent it from seeping into unnecessary areas, and this can be adjusted mainly by adjusting the amount of solvent such as thinner.

By spraying or applying the urethane paint in this way, paint droplets a adhere as if bridging the naps on the surface of the fiber fabric 2, as shown in FIG. As shown in Figure 3, by dispersing the paint droplets a into minute paint particles a' and releasing the bridge state between each nap, the free movement of each nap is not inhibited, and the original nature of the fabric is maintained. It maintains its texture and soft texture.

[Effects of the Invention] As described above, according to the method for coloring the surface of a fiber fabric according to the present invention, coloring can be easily and uniformly done using a paint without impairing the unique texture of the Ia fiber fabric, making it suitable for interior and other surfaces. It is useful for coloring textile fabrics.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of a molded ceiling for an automobile, FIG. 2 is a vertical sectional view thereof, FIG. 3 is a partially enlarged view of FIG. 2, and FIG. 4 and FIG. 5 is an enlarged sectional view of the fiber fabric. 2...Fiber fabric.

Claims (1)

[Claims] A method for coloring the surface of a fiber fabric, which comprises spraying or applying a urethane paint on the surface of the fabric and then brushing the surface.