JPH03213565A - Production of shrinkproof woven silk fabric - 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 the provision of a new manufacturing means for obtaining silk fabrics with excellent shrink resistance.

(Prior art) In order to impart shrink-proofing properties to silk fabrics, conventionally known resin processing methods have been used, and generally epoxy resins, polyurethane resins, etc. are used in combination, and this is permeated into the fabric. At present, shrink-proofing properties are provided by coating.

(Problems to be Solved by the Invention) The above-described conventional technology has problems in the following points. In other words, it is known that even resin-treated silk fabrics shrink by 3% or more when washed, etc. Furthermore, for example, when a white silk fabric is treated with the resin, the shrinkage that occurs during the resin processing during piece dyeing is known to occur. There is also the problem that spots turn into instant dyeing spots, and of course, the above-mentioned degree of preshrunk processing is too strong. Therefore, there is a problem in that not only the shrink-proofing property is insufficient, but also the fabric is prone to folding and wrinkles.

The present invention solves the above-mentioned problems that occur when imparting shrink-proofing properties to silk fabrics, and provides silk fabrics that can be imparted with suitable shrink-proof properties and that also minimize the occurrence of folds, wrinkles, etc. The purpose is to

(Means for Solving the Problems) The present invention provides a means for achieving the object described in item 1 below, in which the pressure is 1 to 2 kg/cm2. Silk fabric is treated with hot water or heat at a temperature of 100 to 135°C under tension, and as means for imparting the tension, the silk fabric is wrapped around a perforated pipe, and then heated with hot water. During treatment, 0.1 to 1.0 g/P of reducing bleach is added to hot water.

(Function) An unrefined silk fabric woven from warp yarns and weft yarns is wound to the required width around the perforated pipe shown in Figure 1 while applying tension, and then heated to a high pressure of 1 to 2 kg/cm2. 10 in the pot
The sample was immersed in hot water of 0 to 135°C to undergo hot water treatment for the required time.

In addition, the refined silk fabric was fixed while applying tension to the plate-shaped body in which the needles were implanted as shown in Fig. 2, while being sequentially folded and polymerized to the required width, and this was placed in a high-pressure cooker with a pressure of 1 to 2 kg/cm2.
A wet heat treatment was performed at 00 to 135°C.

As a result, the fibrous structure of the silk fabric can be completely subjected to hot water and moist heat treatment under high pressure, and since the treatment is carried out under tension, excellent fatty acid contracting properties are exhibited.

(Example) Hereinafter, a method for producing a shrink-proof silk fabric of the present invention will be described.

The silk fabric used in the present invention uses, for example, composite yarns for the warp and weft, but the fabric may have any weaving structure.

The present invention applies a pressure of 2 kg/cm to 2 kg/cm for the above-mentioned silk fabric.
, hot water treatment or thermal treatment is carried out at a temperature of 100 to 135° C. under tension. At this time, hot water treatment is more preferable than thermal treatment. Such heat treatment may be performed at any stage before refining the silk fabric (the fabric is in the state of raw silk immediately after weaving) or after refining (the fabric is in the state where sericin has been removed).

Prior to the heat treatment, the silk fabric 2 is wound around a perforated pipe 1 having a large number of through holes 1a to a desired width while applying appropriate tension, as shown in FIG.

Or, as shown in FIG. 2, a large number of needles 3b are planted along the vicinity of the ends of two corresponding sides of one side of a rectangular plate having a large number of through holes 3a (or no through holes). Using the plate-shaped body 3,
This is sequentially folded to the required width while applying appropriate tension to the silk fabric fabric 2, and fixed via needles while overlapping.

Next, the silk fabric 2 wrapped around the pipe 1 prepared as described above or the silk fabric 2 fixed to the plate-shaped body 3 is prepared.
is 1 in a high pressure cooker pressurized to 1 to 2 kg/cm2.
It is immersed in hot water of 00 to 135'C or subjected to heat treatment in a hot steam atmosphere for the required time. At this time, the pressure of the high-pressure cooker was set to 1 to 2 kg/cm'' to ensure that the hot water or hot steam sufficiently penetrated into the structure of the fabric to uniformly express the heat treatment effect.
If it is less than 2 kg/cm2, the effect will be insufficient, while if it exceeds 2 kg/cm2, the quality of the fabric will be impaired, which is not very preferable.

Furthermore, the heat treatment temperature was set at 100 to 135°C because
If it is less than 100℃, the heat treatment will be insufficient and the desired effect will be poor.
Furthermore, if the temperature exceeds 135°C, the strength of the yarn decreases and yellowing may occur.

In addition, when carrying out the above-mentioned hot water treatment, it is preferable to use a reducing bleach such as )z hydrosulfide in the range of 0.1 to 1.0 g/P in the hot water. At this time, if the amount of reducing bleach is less than 0.1 g/e, the silk thread will not be bleached sufficiently, and if the amount of reducing bleach is more than 1.0 g/e, the silk thread itself will be damaged by the chemical. It's scary and undesirable.

After the heat treatment for the required time, it is taken out from the high-pressure cooker and subjected to drying and other appropriate treatments.

Next, preferred specific examples of the present invention will be given.

<Example 1> A silk fabric before refining was woven using 27 raw silk threads (S twist) as the warp and 10 raw silk threads (S twist) as the weft, as shown in Figure 1. While applying appropriate tension to the perforated pipe, it was wound to the required width and placed in a high pressure cooker, and a pressure of 1.5 kg/cm2 was applied to it.
A heat treatment was performed for 30 minutes in hot water at a temperature of 0.3° C., and 0.3 g/l of hydrosulfide as a reducing bleach was added to the same hot water.

As a result, the silk fabric hardly shrinks even after dyeing, and it was possible to obtain a shrink-proof fabric with a uniform width and no wrinkles.

<Example 2> Silk fabric fabric woven using 27 raw silk yarns (Z twist) as warp threads and 27 raw silk yarns (Z twist) as weft yarns (refined) by 20-25%. ), as shown in Fig. 2, the plate-shaped body with needles appropriately implanted therein is sequentially folded back to the required width while applying appropriate tension to the fabric, and the fabric is fixed through the needles while overlapping to form a woven fabric fixed to the plate-shaped body. The soil was heated at 130'C for 30 minutes in a high pressure cooker with an internal pressure of 1.5kg/cm''.
As a result of the heat treatment for one minute, it was possible to obtain a wrinkle-free fatty acid-condensable silk fabric in the same manner as in Example 1.

(Effect of the invention) The present invention has a pressure of 1 to 2 kg/cm2 and a temperature of 100 kg/cm2.
Silk fabrics are subjected to hot water or heat treatment under specific conditions of ~135°C and under tension, so there is a risk of dyeing spots, wrinkles, and folds (silk fabrics). It does not impair the unique texture of the fabric, does not lose its flexibility, and does not have the drawback of hardening of the fabric, which is seen in conventional resin-processed products.

In particular, hot water or heat treatment under high pressure and under tension can further improve the shrink-proofing effect, and the entire silk fabric can be treated uniformly. Furthermore, the tension can be maintained using perforated pipes, etc. Therefore, a silk fabric with a uniform width can be obtained without causing the fabric width to become uneven compared to conventional free processing.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a perforated pipe for applying tension to the fabric used in the present invention, and FIG. 2 is a perspective view of a plate-like body. DESCRIPTION OF SYMBOLS 1... Perforated pipe, 1a... Through hole, 2... Silk fabric fabric, 3... Plate-shaped body, 3a... Through hole, 3b... Needle.

Claims (4)

[Claims] (1) Pressure is 1-2 kg/cm^2, temperature is 100-1
A method for producing a shrink-proof silk fabric in which the silk fabric is subjected to hot water or moist heat treatment under tension at 35°C. (2) The method for producing a shrink-proof silk fabric according to claim 1, wherein the silk fabric is wrapped around a perforated pipe and subjected to hot water treatment under tension. (3) During hot water treatment, add 0.1 to 1% reducing bleach to hot water.
．． The method for producing a shrink-proof silk fabric according to claim 1, wherein 0 g/l is added. (4) During hot water treatment, add 0.1 to 1% reducing bleach to hot water.
．． 3. The method for producing a shrink-proof silk fabric according to claim 2, wherein 0 g/l is added.