JPH08109577A - Creasing of silk fiber fabric - Google Patents

Abstract

PURPOSE: To effectively impart small random creases high in fashionability to a fabric composed from silk fibers, while the specific excellent function characteristics of the silk fibers are maintained. CONSTITUTION: This method for creasing a silk fiber fabric comprises padding a fabric composed from silk fibers with polyethylene glycol, drying the padded fabric, saturatedly filling the fabric with the aqueous reaction solution of a polyfunctional epoxy compound so that the content of the water in the reaction composition is 60-100wt.% based on the fabric, guiding the reaction solution- containing spread silk fiber fabric into a gas flow treating device in a rope-like state, charging an ordinary temperature air flow to circulate and carry the fabric for creasing the fabric, and subsequently heating the fiber to subject the fabric to a wet-thermal treatment with saturated steam generated from water contained in the silk fiber fabric.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing method for imparting wrinkles with excellent durability to a silk fiber cloth. The present invention relates to a processing method for efficiently imparting highly fashionable, random wrinkles while retaining sensory characteristics. The treated cloth wrinkled by this method has an extremely excellent shape memory function, and the processing method is a mild processing method that is excellent from both the viewpoints of occupational safety and health and environmental protection. It can be said that this is a high value-added technology that can be mentioned specially.

[0002]

2. Description of the Related Art Originally, silk fiber cloth, which has been praised as a high-grade garment, does not always have a satisfactory level of physical properties required by consumers for its excellent sensory properties. It is a fact that cannot be overlooked that the market price and its scarcity value are one of the factors that have created a sense of luxury. However, due to the diversification of various functional synthetic fibers into the apparel field, for example, (1) wrinkles frequently occur during wearing, (2) it is difficult to handle laundry at home, etc.
(3) Rubbing is likely to occur, (4) Yellow browning, (5)
High price has been pointed out as a specific problem, and various countermeasures have been studied.

As a typical example thereof, the above-mentioned price countermeasure (5) is well known. In other words, as a rationalization method for so-called weight increase processing using metallic tin or quintuple etc., which has been used for a long time, an in-fiber polymerization technology using an acrylic thermoplastic resin monomer has been established and has been widely put into practical use as the mainstream of silk chemical processing technology. It is well known that These intra-fiber polymerized silk fibers have a heat-setting property due to the thermoplasticity of the acrylic resin contained inside the fibers according to the increase rate, making it easy to give folds and creases, and transfer printability. While confirming the advantage that the treatment efficiency is improved, the rough hardening of the texture is rapidly manifested in proportion to the increase in the increasing rate for relatively emphasizing the treatment effect, and the excellent organoleptic properties of the silk fiber are perfect. Lost in, its uses, strings, obi,
It is also a well known fact that practical application is being promoted mainly in fields in which the texture characteristics such as interlining and tie can be ignored.

[0004] A method of accelerating the crosslinking reaction of swollen silk fibers by a two-phase method utilizing a polyfunctional epoxy compound, which has been developed and commercialized a little later than these intra-fiber polymerization techniques, is called epoxy processing. It is well known that it has been widely accepted in the industry in the limelight (Japanese Patent Publication No. 52-0).
No. 38131, Japanese Patent Publication No. 02-053544). This method called epoxy processing is extremely excellent as a means for solving the problems (1) to (4) described above, and particularly remembers the flat shape which is the original shape of the silk fiber cloth during processing and is excellent. It has been highly evaluated as a product having functions such as wrinkle resistance and morphological stability. However, it has been found that it is extremely difficult to commercialize the wrinkling process of the silk fiber cloth which is strongly desired in the market by utilizing the unique mechanism of the method.

Of course, it is theoretically well recognized that it is difficult to give a cloth a wrinkle recovery function (planar shape memory ability) and a wrinkle holding function (crease shape memory ability) under the same conditions. , For example, wash and
It is also known that the necessity of drastic measures including the re-arrangement of unit operations in the standard process that constitutes resin processing, which is seen in the development process from wear processing to permanent press processing, has been pointed out.

Therefore, swollen silk is prepared by padding a silk fiber cloth in the standard process of the above-mentioned epoxy treatment with an aqueous solution of a neutral salt serving as a catalyst and then heating it in an organic solvent solution of a polyfunctional epoxy compound without drying. In order to establish an improved technique for the fiber cross-linking treatment, the present inventors, for example, immerse the cloth to be treated in a neutral salt aqueous solution in the form of a rope, and then centrifuge and drain it to impregnate a fixed amount of the catalyst aqueous solution. , Or spread and saturated with the aqueous catalyst solution and squeezed with a mangle, or deliquoring under reduced pressure to convert the wet silk fiber cloth provided with a fixed amount of the aqueous catalyst solution into a rope shape, and then a polyfunctional epoxy compound organic We have extensively studied the method of heating in a constant bath ratio type jet dyeing machine filled with a solvent solution.

However, in common with these methods, the tension in the warp direction of the cloth applied during the treatment in the jet dyeing machine tends to eliminate the small wrinkles previously given, and the wrinkles of the large rope in the warp direction are not fixed. As can be seen, the randomly distributed small wrinkling quality required for apparel materials for fashion could not be achieved. Also in the processing step, for example, in the former case, the distribution unevenness of the catalyst aqueous solution induces cross-linking unevenness, and in the latter case, it is difficult to control the water content of the catalyst aqueous solution in the process of converting from the spread form to the rope form, and the epoxy process Problems such as the cause of cross-linked unevenness due to the difference in the degree of swelling of silk fibers were extracted. In addition, it was pointed out that there was a difficulty in production control due to the precipitation of salt on mechanical equipment etc. due to the drying of the neutral salt aqueous solution attached during the work. Further, as a fatal problem, in the post-processing step after the crosslinking treatment, it is impossible to completely suppress the outflow of a small amount of the organic solvent to the outside of the system even though it is a closed system. Even if the viewpoint can be cleared, there is a history of having to abandon commercialization from the viewpoint of environmental conservation.

[0008] After that, a method for processing in a water system in consideration of occupational safety and health and environmental protection for reproducing excellent physical properties of silk fiber cloth by epoxy cross-linking according to the two-phase method was studied, and impregnated with a phase transfer catalyst, By establishing an improved method (Japanese Patent Application No. 04-030198) in which a dried silk fiber product is filled with an aqueous reaction solution of a polyfunctional epoxy compound and subjected to wet heat treatment, silk has an excellent shape-memory function in a plane. Although it has been successfully applied to fibers and has a high reputation in the market, its application as a wrinkling processing technology was under study.

As described above, there is no method of imparting a special fashion effect to the silk fiber cloth, which is similar to the wrinkled textured cloth utilizing the thermoplasticity of the synthetic fiber that is prized in the market, and it is slightly different. A known method is to use a washer on a sewn product made of silk fiber with a stonewashing process that also uses a unique detergent or abrasive to enhance the visual unevenness of the product due to partial bleaching. It's just that. However, these methods are suitable for practical application to natural fibers, especially jeans made of cotton denim having high wet resistance, and on the other hand, they are extremely useful for silk fiber products characterized by a unique texture. Not only is it unsuitable, it is not possible to avoid a significant decrease in commercial value due to rubbing that occurs in the processing process, and further there is a problem that wrinkles that have been applied easily disappear during wearing and during the cleaning process such as dry cleaning or laundry. It is built in.

In addition, a method in which a resin is coated on one surface of a silk fiber cloth, and then tacking and washer processing is performed to obtain silk fibers having uniform wrinkles and no rubbed spots (JP-A-03-040876), silk After printing resin on at least one side of the fiber material, applying a finishing agent, then tacking, bagging, rubbing with a rotary washer, and then tumbling it to improve the three-dimensional effect visually. Kaihei 03-045775) and the like have been proposed, but all of them are processing techniques for imparting a special effect under certain conditions, and the general wrinkling process obtained from synthetic fibers containing thermoplasticity is It is a very different thing.

[0011]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention After pad-drying polyethylene glycol, which is a relatively easy-to-use phase transfer catalyst, which has been relatively easy to handle, the inventors of the present invention have made it possible to increase the amount of water within a specified range of water content. It was confirmed that by subjecting a silk fiber product saturated with a functional epoxy compound aqueous reaction solution to wet heat treatment, cross-linking of the epoxy compound to swollen silk fiber is promoted, and an excellent shape memory function can be imparted. As a result of diligent research on the wrinkling method based on the above, since the shape of the target silk fiber fabric at the time of completion of cross-linking is built in as a shape memory function, wrinkle treatment is applied to the silk fiber fabric before the cross-linking reaction is promoted. It was found that it is important to do so, and the inventors have searched for conditions under which the crosslinking reaction is completed in the desired shape.

[0012] That is, the conventional process of spreading and drying polyethylene glycol on a silk fiber cloth, then padding with a polyfunctional epoxy compound aqueous reaction liquid, and spreading and moist heat treatment while keeping a constant water content The present invention was completed by determining the conditions for completing the crosslinking reaction by subjecting the method to wet heat treatment while wrinkling the rope.

The moist heat treatment of the wrinkle-treated rope-shaped reaction liquid-containing silk fiber fabric includes (a) a method of filling the carrier in an overmeyer type carrier and subjecting it to moist heat treatment,
As a result of comparative examination of (b) a method of performing wet heat treatment by setting it in a normal pressure or high pressure steaming equipment, (c) a method of performing wet heat treatment in a continuous steaming equipment at normal pressure or high temperature, the following problems were extracted. Was done. That is, when converting a spread silk fiber silk cloth containing a reaction liquid containing a specified water content into a rope shape, it is difficult to maintain and control the water content, and the quality due to partial fluffing of the silk fiber cloth due to rubbing It has become clear that common problems are such as a decrease.

Further, in the case of the above (a), it is possible to secure the fixing of the wrinkles applied at the time of filling, but it is extremely difficult to move the cloth in the carrier, and the uniform execution of the crosslinking reaction is hindered, and the applied wrinkles are prevented. It has a large number of built-in irregularities in its shape memory function. Further, in the cases of (b) and (c), it is general that the wet heat treatment is performed in a spread form, and it is extremely unsuitable for performing a uniform crosslinking reaction in a rope form. In particular, it has been found that the tension of the reaction solution-containing rope-shaped silk fiber cloth suspended and held inside the apparatus in the longitudinal direction due to its own weight relatively reduces the fixing of small wrinkles appearing in the weft direction.

[0015]

In view of the above-mentioned problems, the inventors of the present invention have shaken off the form conversion of the reaction solution-containing silk fiber cloth from the expanded form to the rope form from the reaction solution pad device. It is performed by introducing the spread cloth as it is into the airflow processing device while squeezing it into a rope shape, then connecting the front and back ends, sealing it in an endless state, circulating it by injecting an air flow at room temperature, These problems have been solved by adopting an extremely simple production method in which the temperature is raised to complete the cross-linking reaction after sufficiently spinning it to promote wrinkling.

That is, the method for wrinkling a silk fiber cloth according to the present invention is, specifically, pad-drying polyethylene glycol on a cloth made of silk fiber, and further adding a polyfunctional epoxy compound aqueous reaction liquid. The reaction liquid-containing expanded silk fiber cloth is filled with rope in the airflow treatment device so that the reaction composition contains water in an amount of 60 to 110% by weight relative to the silk fiber cloth. Inducing and wrinkling while circulating and conveying an air stream at room temperature, followed by heating and moist heat treatment with saturated steam generated from moisture contained in the silk fiber cloth Is.

The unit operation in each step of the present invention will be specifically described below. First, the silk fiber cloth to be processed in the present invention is classified into a so-called knitted woven fabric that is woven as raw silk, or a so-called kneaded woven fabric made of fibroin fiber obtained by scouring raw silk to remove sericin components. A knitted woven fabric, and an undyed fabric in which a dye is not present in the fibers prepared by treating the fabrics according to a conventional method,
(A) Efficiently promote the cross-linking reaction between the polymer main chain constituting the silk fiber and the polyfunctional epoxy compound. (B) Generally, the treated fabric after the cross-linking constitution is dyed in comparison with the untreated fabric. It is suitable for performing the processing method most efficiently because it has the advantages of increasing the wearability and eliminating the difficulties in dyeing work due to the improvement of the abrasion resistance. However,
As long as the cloth is toned in advance in consideration of discoloration due to the processing, even a colored cloth does not hinder the application.

That is, the method of the present invention also includes a feature that wrinkling processing having a high shape memory function can be performed at the same time as the sericin fixing of the cloth composed of raw silk containing sericin. Aldehydes, chromium salts, and thermosetting or fibrin-reactive resins have been applied to sericin fixing, which has been generally adopted for a long time, but rough curing of the texture after fixing and lack of hot water resistance In addition, many problems have been built in, for example, clothing damage due to formalin, environmental pollution of chromium, and coloring of cloth due to fixation. On the other hand, the fixing of sericin by epoxy processing makes it possible to make the sericin insoluble by introducing a relatively long-chain cross-linking bond to the swollen raw silk. Hot water resistant to color dyeing also attracts attention as a material for highly practical new products.

The phase transfer catalyst used in the present invention has a molecular weight of 2 which is easy to handle and can be obtained at a low price.
Polyethylene glycol of 00 to 400,000 is used, and the spread silk fiber cloth is used as an aqueous solution having a concentration of 0.01 to 2 mol at a squeezing rate of about 100% by weight, dried, and applied. The aqueous solution of the catalyst has a molecular weight of 2 in preparation of the solution.
About 00 to 1,000 is suitable, and it is desirable to adjust the temperature from 20 ° C to 40 ° C in consideration of the effect of permeating into the fabric at the time of padding, but from the viewpoint of quality control, maintain a constant temperature for the same lot. It is necessary. In addition, it is natural that the drying is required to consider the generation of rubbing during the process, but it is desirable to eliminate the tension in the warp direction that promotes the latent strain of the cloth as much as possible, for example, 50 ° C.
It is desirable to use a short loop or a hanging dryer at a medium temperature of 60 to 60 ° C. Of course, it is necessary to strictly control the water content of the cloth after drying the polyethylene glycol-containing cloth.

Examples of the polyfunctional epoxy compound used in the present invention include glycerin diglycidyl ether,
It is preferable to use diglycerides such as ethylene glycol diglycidyl ether, glycerin triglycidyl ether, phenylene-diglycidyl ether and 1,4 butanediol diglycidyl ether alone or in combination. A reaction solution comprising an aqueous solution or an aqueous suspension of these compounds is generally prepared by applying an aqueous solution of 3 to 20% by weight and applied. When the concentration is 3% by weight or less, the shape memory function of the treated fabric is poor, and when it is 20% by weight or more, the homopolymer is induced to cause a variation factor of the texture such as aggregation on the fiber surface, which is not preferable.

The saturateness of the polyethylene glycol-containing spread silk fiber cloth with the aqueous reaction solution of the above polyfunctional epoxy compound was dipped in the reaction solution regulated to a constant temperature in the range of 20 ° C to 30 ° C. Thereafter, mangle or vacuum dewatering is performed to adjust the squeezing rate to 80% by weight to 110% by weight so that the treated cloth contains a specified water content. When the squeezing rate exceeds 110% by weight, the reaction liquid in the cloth migrates and at the same time, the weight of the treated cloth increases,
There is a tendency that the fixing of small wrinkles in the weft direction is suppressed due to the relative increase in the tension applied to the warp direction of the fabric during the wet heat treatment.
When the squeezing rate is 0% by weight or less, the flattened feeling is promoted by the compression of the treated cloth, or the rubbing of the cloth at the time of depressurization and the factor of the shape change are potentially increased, and further the material is fed into the airflow treatment device while being converted into a rope. In doing so, the fluctuation of water content until the start of circulation and conveyance by the air flow of the cloth is relatively increased, and the amount of water present in the system during the wet heat reaction is insufficient, which hinders the achievement of the desired crosslinking reaction effect. It is necessary to avoid it, because the tendency of increasing the probability becomes remarkable.

The airflow treatment apparatus used in the present invention is a batch type wet treatment apparatus which is widely used in the dyeing processing field, in which both the cloth and the treatment liquid move in the same direction, and the number of mutual contact is amplified to obtain a relative value. As a device for improving the low bath ratio of a jet dyeing machine, which efficiently imparts the desired uniform effect under low tension, the conventional liquid flow is used to replace the cloth transport by a gas flow or a mixed flow of gas and liquid. An example of the device is a device having a built-in mechanism, which is disclosed in U.S. Pat. Nos. 3,921,420 to 3,949,575 and Japanese Patent Publication No. 63-036385.

In the moist heat treatment by the airflow treatment device, the expanded silk fiber fabric containing the epoxy compound aqueous reaction liquid and having a moisture content in the specified range is squeezed into the airflow treatment device as it is in a rope shape. Then, the two ends of the treated fabric fed by the rotating reel are joined together to be in an endless state and sealed, and the circulation and transport operation is started with an air flow at room temperature. That is, the weight ratio of fiber to water, which is the so-called bath ratio in the apparatus, is regulated in the range of 1: 0.8 to 1: 1.1, and the circulation treatment is carried out as it is to promote the generation of small wrinkles and then the heating is performed. The air flow is sent in to raise the temperature to a specified temperature, and the crosslinking reaction is performed for a predetermined time to complete the fixing of the small wrinkles.

Particularly, the specific volume of the moisture-containing air is relatively large as compared with the dry air, and the silk fiber fabric containing the moisture content in the specified range is not affected by the amount of the input fabric and the inside of the air flow treatment device is not affected. The saturated vapor amount generated from the water contained in the treated fabric effectively maintains the swelling degree of the polyethylene glycol-containing silk fiber, and at the same time, the polyethylene glycol phase transfer catalyst function causes the polyethylene fiber-containing polyester peptide main chain to move. An environment is ensured in which the crosslinking reaction with the epoxy compound for the intervening functional groups is sufficiently promoted. Generally, the crosslinking reaction is completed at 30 to 120 minutes at 60 to 80 ° C.

After completion of the reaction, cooling air is blown in to continue cooling while continuing the circulation and conveyance process, and the cleaning liquid is added as it is for soaping treatment, and post-treatment is carried out according to a standard method to finish.
The treated silk fiber cloth has remarkably improved resistance to rubbing and chemical resistance, and it is confirmed that the dyeing property is improved and the workability of coloring such as dyeing or printing is significantly improved.

In the method of the present invention, the tension applied to the fabric during the circulation and conveyance of the treated fabric by the air flow in the air flow treatment device can be suppressed to an extremely low level, so that it can be applied regardless of the structure of the woven or knitted fabric. However, the step of promoting generation of small wrinkles and the step of fixing small wrinkles should be performed separately, and conditions such as fabric speed and time during circulating conveyance of idling at room temperature at the start of operation are important. It has been observed by inspection and the like in the intermediate step that the degree of generation of wrinkles in the weft direction is controlled by the tension applied in the warp direction in the step. Of course, the wrinkles that occur in the initial stage are not always fixed as they are, but it is considered that the wrinkles can be almost determined from the tendency of wrinkles.

[0027]

EXAMPLES The details of the present invention will be described below with reference to examples, but the present invention is not limited to these examples. Example 1 A satin crepe with 18 curls composed of 2 warp yarns with 2 medium flat yarns and 3 weft yarns with 3 strongly twisted yarns 21 was enzymatically scoured according to a conventional method, bleached with hydrogen peroxide and squeezed to 92 cm. Dried. A 0.5N aqueous solution of polyethylene glycol (molecular weight 200) was padded on the spread cloth at 40 ° C., vacuum deliquored to a draw ratio of 100% by weight, dried at 60 ° C. with a short loop dryer and shaken off. . Further, a 2% by weight aqueous solution of ethylene glycol diglycidyl ether was added to the polyethylene glycol-containing cloth.
The pad was padded at 5 ° C., drained under reduced pressure to be saturated with 80% by weight, and immediately squeezed into a rope shape and charged into an airflow treatment device using a rotating reel. After the introduction, the front and rear ends were connected to each other to form an endless form, which was then sealed, and a circulating and conveying operation was started with a room temperature air flow, and idling for promoting familiarity of the fabric and random wrinkles was continued for 20 minutes.

Then, 30 minutes after the heating, the temperature in the processing apparatus was raised to 70 ° C., and the circulation reaction was continued for 120 minutes at the same temperature to promote the crosslinking reaction. After the reaction was completed, the inside of the apparatus was replaced with cold air, and after cooling, the treated cloth was washed with a water stream in the apparatus, and then a washing liquid of 1 g / l of soap and 0.5 g / l of a nonionic activator was used. Soap at 50 ° C for 10 minutes, rinse with hot water at 50 ° C for 10 minutes, and rinse with water for 10 minutes.
When taken out, centrifugally drained and dried to obtain a fashionable satin crepe with small wrinkles randomly generated in the longitudinal direction. It was confirmed that the treated cloth did not shrink due to washing, the wrinkling effect remained stable, and the excellent shape memory function was imparted. Further, it was observed that the treated fabric was superior in coloring hue to the untreated fabric in dip dyeing and printing, and the wrinkling effect was retained after coloring.

Example 2 A crepe decin with 18-mom consisting of 4 warp yarns of 4 medium flat yarns and 4 weft yarns of 4 hard yarns 21 was prepared by a conventional method and dried. 0.1% of polyethylene glycol (molecular weight 400) was added to the spread crepe decin.
The normal aqueous solution was padded at 20 ° C., dewatered under reduced pressure, saturated with 110% by weight, and dried with a hanging dryer at 50 ° C. Then, to the polyethylene glycol-containing decyne,
A 3% by weight aqueous solution of phenylene-diglycidyl ether was filled up to 110% by weight at 30 ° C., immediately squeezed into a rope shape, and then fed into an air flow treatment device with a rotating reel, and then wrinkled at room temperature for 20 minutes according to Example 1. After the soaking treatment, the temperature was raised to 80 ° C. in 30 minutes, the heat treatment was carried out for 60 minutes, the post-treatment and the finishing were carried out to obtain a wrinkled crepe decine having high morphological stability.

Example 3 A satin crepe with 20 curls consisting of two warp yarns, two medium flat yarns, and four weft yarns, four hard yarns 21, was scoured, bleached and dried by a conventional method. The spread cloth was saturated with 95% by weight of a specified aqueous solution of polyethylene glycol (molecular weight 1,000) at 20 ° C. and dried with a short loop dryer at 60 ° C. Further, a 15% by weight aqueous solution of 1,4-butanediol diglycidyl ether at 20 ° C. was added to the cloth 8 times.
After being filled with 0% by weight, the product was immediately set in the airflow device while being squeezed into a rope shape, subjected to wrinkling treatment and moist heat treatment according to Example 2, and then post-treated and finished. It was confirmed that the obtained cloth was particularly noted as a wrinkled satin crepe having an excellent shape memory function, and particularly had a softer and smoother texture than the untreated cloth.

Example 4 A 28-gauge tricot knitted with silk spinning No. 72 twin yarn was subjected to enzyme scouring and thiourea dioxide bleaching by a conventional method, and then dried and spread in a spread state. Polyethylene glycol was pad-dried according to Example 1 on the cloth, further, an epoxy aqueous solution was padded, and wrinkle treatment was performed in an airflow treatment device, followed by wet heat treatment, post-treatment, drying, and finishing. It was confirmed that the obtained tricot was a knitted fabric having a high shape memory function, in which fine wrinkles were uniformly applied.

Example 5 The satin crepe greige machine with 20 moars used in Example 3 was saturated with 110% by weight of a 1N aqueous solution of polyethylene glycol (molecular weight 200) at 20 ° C. and dried at 50 ° C. by a short loop dryer. . Further, the polyethylene glycol-containing spread cloth was saturated with 110% by weight of a 20% by weight aqueous solution of glycerin triglycidyl ether at 20 ° C., squeezed into a rope shape as it was, and set in an airflow treatment device, followed by wrinkling treatment and wet heat treatment. Was carried out according to Example 2, and post-treatment and finishing were carried out. The resulting fabric is
It was evaluated as a highly fashionable material in which random wrinkles were evenly fixed. Further, the cloth can withstand dark dyeing with a conventional gold-containing dye using a jet dyeing machine without reducing the quantity, and the dyed cloth is extremely excellent in flexibility as compared with a conventional sericin fixing cloth. Was confirmed.

[0033]

EFFECTS OF THE INVENTION According to the present invention described in detail above, a fabric composed of silk fibers is imparted with an excellent wrinkling effect with high fashionability while maintaining the excellent sensory characteristics peculiar to silk. It is confirmed that both the wrinkled part and the flat part have an excellent shape memory function, and that the apparel sewn from the material has a high consumption function. Further, when the present invention is applied to a cloth composed of raw silk, sericin fixing can be efficiently performed simultaneously with the wrinkling process.
Furthermore, since the dyeing property of the wrinkled silk fiber cloth is remarkably improved by the processing method of the present invention, the dyeing and printing process after wrinkling can be easily performed, and the production process is extremely simple. It is noteworthy that it is extremely mild in terms of occupational safety and health and environmental conservation.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical display location D06M 101: 12 (72) Inventor Masaharu Masuda 1 of 1545, Oki-cho, Omiya-cho, Fuchu-gun, Kyoto (72) Inventor Toshihiko Masuda 40 Sugitani, Mineyama-cho, Fuchu-gun, Kyoto

Claims (1)

[Claims] 1. A cloth composed of silk fibers is pad-dried with polyethylene glycol, and a polyfunctional epoxy compound aqueous reaction solution is added to the silk fiber cloth so that the water content of the reaction composition is 60 to 110% by weight. % Of the reaction solution-containing expanded silk fiber cloth is guided into the airflow treatment device in the form of a rope, and the airflow at room temperature is introduced to crease it while circulating and conveying it. Then, a method for wrinkling a silk fiber cloth is characterized in that the silk fiber cloth is heated and subjected to a wet heat treatment with saturated steam generated from the water contained in the silk fiber cloth.