JP2000333555A - Production of colored raw silk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain colored raw silk from silkworms. SOLUTION: This colored silk is obtained by making use of the fact that the back of a grown-up silkworm 1 is coated with a dyeing material 2 and the resulting cocoons produced by the silkworm 1 has a hue of the same kind of that of the dyeing material 2. Thus, the objective colored silk can be obtained by omitting a conventional method of dyeing raw silk or silk fabrics.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for producing colored raw silk.

[0002]

2. Description of the Related Art Conventionally, when a colored silk product is obtained, a method of immersing it in a dye and dyeing it at the stage of raw silk or silk fabric has been adopted.

[0003]

However, since the wastewater generated by the dyeing process is colored or contains chemicals, measures must be taken to remove harmful substances before drainage from the viewpoint of pollution and environmental protection. In addition, capital investment in this processing facility was one factor in the soaring price of silk products.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention takes advantage of the fact that, after a dyeing material is applied to the back of a mature silkworm, the cocoon produced by the mature silkworm has a color shade similar to that of the dyeing material. The above object is achieved by obtaining a colored raw silk by omitting the conventional method of dyeing raw silk or silk fabric.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a mature silkworm 1. The mature silkworm 1 is a silkworm that has matured after moulting four times for the four-sleeping silkworm, three times for the three-sleeping silkworm, and five times for the five-sleeping silkworm, and starting to make a cocoon.

A method for producing raw silk using the mature silkworm 1 will be described in detail below. [First Step] First, as shown in FIG. 1, a dyeing material 2 (a shaded portion in the figure) such as a dye or a pigment is brushed and brushed around a back (back) of a mature silkworm 1 grown by sericulture. To apply. The coloring of the mature silkworm 1 may be repeated several times. [Second step] After the first step, the mature silkworm 1 spins to form a cocoon.
This cocoon is colored in the same color as the dyeing material 2 (the color is lighter than the coloring material 2 colored on the mature silkworm 1). The body of the mature silkworm 1 is almost transparent, and its pigment penetrates into the body from the skin on the back to which the dyeing material 2 is applied, and the pigment is fixed to the liquid silk stored in the silk gland in the body, It is conceivable that the yarn spitting out is colored in the same color as the dyeing material 2. [Third step] As described above, after the colored cocoons are cooked,
Reeling. Thereby, the raw silk colored in the same color as the dyeing material 2 is obtained.

[0007]

In summary, the present invention provides a method for preparing a silkworm
Then, the cocoon colored in the same color as the dyed material 2 made by the mature silkworm 1 was reeled into raw silk, so that it was colored without extensive dyeing processing as in the past. Since raw silk can be obtained and no measures are required for treating wastewater generated by dyeing, the production cost of silk products can be reduced and environmental protection can be achieved. Further, the color tone of the raw silk obtained by the present invention is not exactly the same color as that of the dyeing material 2, but is a light shade of the same color, and has a texture that cannot be obtained by the conventional dyeing method. Its practical effect is extremely large, such as being able to provide silk products having a texture.

[Brief description of the drawings]

FIG. 1 is a diagram showing a state in which a dye material is applied to a mature silkworm.

[Explanation of symbols]

 1 Mature silkworm 2 Dyeing material

Claims (1)

[Claims] 1. Production of colored raw silk characterized by coloring a mature silkworm with a dyeing material, and then forming a raw silk by reeling a cocoon colored in a similar color to the dyeing material produced by the mature silkworm. Method.