JP4287541B2 - Manufacturing method of silk-like fiber products - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a process for producing a silk-like fiber products comprising belongs to the technical field for processing textiles.
[0002]
[Prior art]
Silk made from raw silk is a general term for silk yarn, silk fabric, and silk knitted fabric in a broad sense, and silk fiber in a narrow sense. Since silk products have a unique feel and gloss, there are many users who use chemical fibers today. As is well known, silk is obtained from silkworm cocoons, and silkworms are made by spitting mucus from silkworm glands of silkworms. Regarding silk, at the raw silk stage, this is a structure in which two fibroins are covered with a colloidal sericin film. Fibroin and sericin both belong to hard proteins, and in raw silk, about 70% is fibroin and about 30% is sericin. When sericin contained in raw silk is removed by refining, it becomes kneaded silk. A texture peculiar to silk begins to appear from the stage of kneaded silk.
[0003]
[Problems to be solved by the invention]
Silk products are superior to others in terms of feel and gloss, but cannot exceed chemical fiber products in terms of low cost, mass production, and bending fatigue resistance. Conversely, chemical fiber products are inferior in texture to silk products. Textile products with only advantage of because both have such circumstances is desired.
[0004]
On the other hand, when raw silk is scoured, a large amount of sericin is generated. This sericin also contains some fibroin. However, these are often discarded at present. Fibroin is effective in terms of moisturizing and antibacterial properties, in addition to expressing silk feel and gloss, and sericin can also be used to enhance spinnability and strengthen fibers. Therefore, it is desirable to effectively use fibroin and sericin for fiber products without discarding them, thereby providing better fiber products and reducing the burden of waste disposal.
[0005]
OBJECT OF THE INVENTION
In view of the such technical problems, it is to provide a method capable of obtaining a silk-like fiber product having a texture fit silk easily inexpensive.
[0006]
[Means for Solving the Problems]
Method of manufacturing silk-like fiber product according to the present invention is characterized by following means for solving problems To achieve the intended purpose. That is, the method for producing a silk-like fiber product according to the present invention includes:
Prepare a textile product that is a tertiary product made of chemical fiber, vegetable fiber, or blended fiber and selected from socks (including socks and stockings), pantyhose, underwear, nightwear, and swimwear And
Preparing a protein solution containing sericin , fibroin and a fabric softener , wherein the fibroin concentration in the solution is higher than the sericin concentration; and
Rukoto depositing the sericin and fibroin and softeners to the contact portion of the fiber product into contact with the protein solution, and
A protein film containing sericin , fibroin and a softening agent is formed on the surface of the textile product by the above contact adhesion .
[0007]
[Action]
<1> The silk-like fiber product obtained by the method of the present invention is covered with a protein film containing sericin, fibroin and a softening agent. In the case of this silk-like fiber product, it is reinforced with sericin or creates a texture unique to sericin, and it is reinforced with fibroin or creates a texture (good feel and gloss) peculiar to fibroin. since or exhibit, Ri Do those having comprehensively these characteristics, and becomes also have flexibility of softener.
<2> The method of the present invention prepares a tertiary product selected from socks (including socks and stockings), pantyhose, underwear, nightclothes, and swimsuits, and forms a protein film thereon. The tertiary product in this case is in contact with the skin. Thus, in the case of a textile product that comes into contact with the skin, it becomes high-quality because it has a touch and gloss similar to silk.
<3> The present invention method comprises contacting a predetermined tertiary products given protein solution to adhere the sericin-fibroin softener to the contact portion, also of the is that to form a protein film on the surface of the textile . Therefore, the silk-like fiber product described above can be easily obtained. In addition, if the protein solution in this case is one that dissolves one or more of waste silk, defective raw silk, secondary silk thread, waste silk, waste silk cotton, and waste silk thread, the cost of forming the protein film can be reduced. Can do.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A method for manufacturing silk-like fiber product according to the present invention will be explained based on the embodiments in the accompanying drawings.
[0009]
In FIGS. 1 and 2, 11 indicates a textile product, and 12 indicates a protein coating.
[0010]
The textile product 11 may be a primary product such as a thread, a secondary product such as a fabric, or a tertiary product such as clothing or a cloth product. When the textile product 11 is a thread or a fabric, it is any one of chemical fiber, vegetable fiber, animal fiber, and blended fiber. If the textile 11 is clothing, this includes clothes, coats, sweaters, shirts, nightclothes, pantyhose (stockings with panty), underwear, swimwear, Japanese clothes, socks (socks), stockings (socks), Shawls, scarves, scarves, gloves, neckers, neckties, hats, etc. are included. In the case where the textile product 11 is a cloth product, this includes towels, hand towels, handkerchiefs, fukusa, furoshiki, and the like. When the textile product 11 is a clothing or a cloth product, it may be formed of any one of chemical fiber, plant fiber, animal fiber, and mixed fiber, or may be formed of a plurality of types. As the fiber product 11, a product other than a silk product is often employed. 1 and 2 show a pantyhose as an example of the textile product 11. The illustrated pantyhose is formed by knitting polyamide fibers (trade name nylon) which is a kind of chemical fiber. The surface of the fiber product 11 is covered with a protein coating 12 as shown in FIG. As an example, the protein coating 12 is composed of sericin as a main component or high-purity sericin. As another example, the protein coating 12 is composed of fibroin as a main component or high-purity fibroin. As another example, the protein coating 12 is composed mainly of sericin and fibroin, or made of high-purity sericin and high-purity fibroin. In addition to sericin and / or fibroin, the protein coating 12 may contain a known or well-known softening agent (softening agent) for softening the fiber.
[0011]
A protein solution used for forming the protein coating 12, that is, a solution containing sericin or fibroin is prepared by the following means, for example. Raw materials include silkworms, raw silk, and silk cotton (those with sericin and fibroin). From the viewpoint of low cost, raw materials such as waste silkworms, defective raw silk, secondary silk thread, waste silk fabric, waste silk cotton, and waste silk thread are used. It is good to do. Therefore, one or more of these are selected as raw materials. The selected raw material should be finely cut. First, immerse the raw material in water in a container (for example, an autoclave) and stir well. Raw material: water is about 1: 10-30. Next, the water temperature in a container is raised to about 30-40 degreeC. After that, the dissolving agent is put in the container, and the inside of the container is heated until sericin and fibroin are eluted. The heating temperature at this time is around 120 ° C. The solubilizer used in this case is caustic soda as a representative example. In addition, known or known solubilizers for dissolving sericin and fibroin can also be used. Whether or not the dissolution is sufficient is determined as follows. For example, if the raw material is 100% silk waste, check with a worker or a measuring instrument that the silk has been thawed. If the raw material is knitted fabric of silk and nylon (a type of waste silk), Unscrew and check with a worker or measuring instrument that nylon remains. The solution thus obtained is alkaline because an alkaline solution is used as a solubilizer. About this, necessary processing is performed after the fact. One is to neutralize the alkaline solution with acid. The acid used for neutralization is formic acid, for example. The acid used for neutralization may be other than formic acid. Whether or not the solution has been neutralized may be confirmed by using a known pH meter or litmus paper to reach a neutral value (pH 7). The other is a process for removing impurities in the solution, that is, a process for increasing the purity of sericin and fibroin. Processing means for this are widely known in this type of technical field. In addition, when the raw material is the knitted fabric, insoluble fibers (nylon) are removed from the solution.
[0012]
When only sericin is taken out from the raw material, it is as follows. The finely cut raw material is placed in an autoclave together with water and stirred, and is treated for about 1.5 hours under the conditions of 120 ° C. and gauge pressure of 14 Lb / in ² . Then, the hot fibroin and other impurities are removed, and the solution is poured into 7 to 8 volumes of 95% ethanol and allowed to stand for several hours. Thereafter, a white precipitate is collected, and this is washed several times with alcohol and dried, or the solution is concentrated under reduced pressure and cooled to obtain a solidified precipitate. Therefore, when producing a sericin solution, it is sufficient to dissolve this solidified precipitate.
[0013]
When only fibroin is taken out from the raw material, it is as follows. First, about 25 times the amount of water is added to the finely cut waste material, and this is pressurized and heated at 120 ° C. for about 3 hours. This operation is repeated until a weight loss is observed, and then 1% hydrochloric acid is used. Process for 24 hours. Next, high-purity fibroin is obtained by sequentially washing with water, ethanol, and ether. As another means, the silk gland content of silkworm is dissolved in water or a mixed solution of 6 ml of 0.1M ammonium chloride, 24 ml of 0.1N ammonia water and 70 ml of water (pH 10), and the solution is stirred or It is only necessary to quickly collect the fibrous precipitate of fibroin that is initially formed by shaking. In this latter means, sericin in the supernatant of the lysis solution gels after a while, and sericin can also be obtained by collecting this. The fibroin thus obtained may be used as a solution having an appropriate concentration. The same applies to sericin.
[0014]
FIG. 3 schematically shows an example of manufacturing a fiber product 11 having a protein coating 12.
[0015]
As is apparent with reference to FIG. 3, the first step is an immersion step. In the immersion tank used in this process, (1) a protein solution containing sericin, (2) a protein solution containing fibroin, (3) a protein solution containing sericin and fibroin, etc. Any one that has been put. The sericin concentration in the solution of (1) is set in the range of 10 to 80%, desirably 30 to 60%. (2) The fibroin concentration in the solution is also set within the range of 10 to 70%, preferably 30 to 50%. The concentration of sericin + fibroin in the solution of (3) is also set within the above range, but the fibroin concentration is often increased due to the relative relationship between sericin and fibroin. An appropriate amount of a softening agent may be added to the protein solution described in (1) to (3) as necessary. The textile products 11 subjected to the dipping process are the primary products, secondary products, and tertiary products described above, and these have already finished dyeing and other processing. A typical example of the textile product 11 is the pantyhose described in FIGS. 1 and 2. This pantyhose is placed in a dipping bath containing a protein solution. The soaking time of the fiber product 11 in the protein solution is determined in consideration of the thickness of the fabric of the fiber product 11, the amount of the fiber product 11 soaked, the amount of the protein solution, and the like. As a specific example, when a protein solution is put into a cylindrical container having a diameter of 50 cm and a depth of 30 cm for about 7 minutes and pantyhose (5 pairs) is immersed therein, the protein component is turned into pantyhose in a few minutes to 10 minutes. Adhesion was impregnated, and the predetermined immersion treatment was completed.
[0015]
The next step is the dehydration step of FIG. In this step, 70% to 100% of water is removed from the fiber product 11 after being taken out from the immersion tank. Desirably, the fiber product 11 is dried so that a little moisture remains. The dehydrating means may be natural drying or drying using a hot air machine. Before such treatment, the fiber product 11 may be lightly hung on a dehydrator and drained.
[0016]
The last step is the heat treatment step of FIG. In this process, the pantyhose (after dehydration) as the textile product 11 is mounted on a heat-resistant display (metal or ceramic mold) and placed in a hot hot chamber (heating container) for a short time. Heat treatment. Thus, when heat-treating the pantyhose, the heating temperature in the hot chamber is maintained at 75 to 130 ° C., preferably about 100 to 120 ° C., and the processing time is set to 3 to 15 seconds. As a specific example, when the pantyhose after the dehydration process was placed in a 110 ° C. hot chamber and subjected to the heat treatment for about 6 seconds, the protein coating 12 was stably formed on the front and back surfaces of the pantyhose.
[0017]
The fiber product 11 having the protein coating 12 can also be produced by the following method. That is, instead of the dipping step, the protein solution is sprayed on the front and back surfaces of the fiber product 11 by a well-known spraying means (spraying step). In this method, the dehydration step can be omitted depending on the concentration of the protein solution. In the following, the fiber product 11 coated with the protein solution may be subjected to a heat treatment step as described above.
[0018]
The protein coating 12 of the fiber product 11 varies depending on the type of protein solution used. In the case of using the protein solution (1), some hardness due to sericin is generated in the protein coating 12. However, when a softening agent is added to the protein solution of (1), there is no such hardness of the film. The sericin protein coating 12 does not reach fibroin in terms of feel and gloss, but has a certain feel and gloss, is hygroscopic, and the fiber product 11 is reinforced with sericin. In the case of using the protein solution (2), silk-like feel and gloss due to the fibroin protein coating 12 are seen in the fiber product 11, and the hygroscopic, antibacterial and reinforcing effects of fibroin are also obtained. When the protein solution (2) also contains a softening agent, flexibility is imparted to the fibroin protein coating 12. In the case of using the protein solution of (3), characteristics due to sericin and fibroin are mixed in the protein coating 12. In this case, the protein coating 12 should preferably contain a large amount of fibroin, so that the characteristics of silk can be utilized in the fiber product 11.
[0019]
When a nylon pantyhose (fiber product 11) coated by the method using the protein solution of (2) above was used as a sample and observed with an electron microscope, the protein coating 12 adhered to the fiber surface almost uniformly. In addition, in the portion where the fibers overlapped, the mutual sticking of the fibers was observed. The surface is smooth and changes little before and after washing. In addition, the results of observation with an electron microscope after washing were almost unchanged.
[0020]
The protein coating 12 may be formed only on the front surface or the back surface of the fiber product 11 depending on the purpose of the coating or the type of the fiber product 11, or may be formed only on a part of the front and back surfaces. The protein coating 12 formed on the fiber product 11 may have a dense film formation structure or a rough film formation structure. This can also be adjusted by the concentration of the protein solution and the amount of the protein solution attached to the fiber product 11 during the production.
[0021]
【The invention's effect】
[1] In the method for producing a silk-like fiber product according to the present invention , since the fiber product is coated with sericin, fibroin, and a softening agent, a high-quality silk texture can be obtained as a silk-like fiber product . Combined with hygroscopic properties, antibacterial properties, fiber reinforcing effects, etc. that are not found in chemical fibers, the resulting silk-like fiber product is excellent in practical use.
[2] In the method for producing a silk-like fiber product according to the present invention, since sericin and fibroin can be obtained using waste, the silk-like fiber product can be provided at low cost, and the waste processing cost is also reduced. To do.
[3] The method for producing a silk-like fiber product according to the present invention forms a protein film (sericin and fibroin film) by means of contacting a predetermined part of the fiber product. Is obtained.
[Brief description of the drawings]
Schematic perspective view FIG. 2 is a diagram partially enlarged at the microscopic level between the silk-like fiber product is illustrated in Figure 1 showing an embodiment of a silk-like fiber products produced by the present invention; FIG method FIG. 3 is a process diagram showing an embodiment of the method of the present invention .
11 Textile products 12 Protein coating

Claims (1)

Prepare a textile product that is a tertiary product made of chemical fiber, vegetable fiber, or blended fiber and selected from socks (including socks and stockings), pantyhose, underwear, nightwear, and swimwear And
Preparing a protein solution containing sericin , fibroin and a fabric softener , wherein the fibroin concentration in the solution is higher than the sericin concentration; and
Rukoto depositing the sericin and fibroin and softeners to the contact portion of the fiber product into contact with the protein solution, and
A method for producing a silk-like fiber product, characterized in that a protein film containing sericin , fibroin and a softening agent is formed on the surface of the fiber product by the above contact adhesion .

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