JP7089319B1 - Silk fiber laminated batting sheet and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a silk fiber laminated batting sheet having an effect of maintaining elasticity and volume even after washing, activating skin cells and preventing skin aging, and a method for producing the same. SOLUTION: A silk fiber laminated batting sheet in which a first batting, a first resin fiber layer, a silk fiber layer, a second resin fiber layer, and a second batting are arranged and integrated in this order. At least a part of the first resin fiber layer and the second resin fiber layer polyester composite fiber was melted, and the resin fiber and the silk fiber were mixed and heat-welded, so that the silk fiber and the resin fiber were entangled with each other. Silk fiber laminated batting sheet that forms a stable mesh state. [Selection diagram] Fig. 3

Description

The present invention relates to a silk fiber laminated batting sheet which can maintain elasticity and volume even after washing, activates skin cells, and has an effect of preventing skin aging.

Down feathers, wool, feathers, and synthetic fiber batting are widely used for clothing and bedding that require heat retention. In addition, there is a high-class futon that has been called a cotton futon, which is made by making a sheet of cocoons processed into a cotton-like shape by a craftsman. Has been developed. For example, Patent Document 1 states that "a plurality of sheet-shaped unit webs are laminated and configured; each sheet-shaped unit web is composed of a plurality of partial webs formed in a state in which a plurality of silk filaments are each diffused in a flat plate shape. At least one portion of the silk filament forming each partial web is formed by being entangled with at least one portion of the silk filament of the adjacent partial web in a plane direction or a direction orthogonal to the same; the silk filaments constituting the laminate have adhesive ability. A laminated silk web characterized by being bonded to each other by a substance having. "

Patent Document 2 describes a pile fabric using washable raw silk (sericin-fixed silk filament) obtained by twisting 4 to 20 threads drawn from a cocoon and heat-treating raw silk having a certain thickness with a specific cross-linking agent. And, a method for producing a textile product containing the pile fabric is disclosed.

In recent years, with the improvement of quality of life and the growing interest in environmental, safety and health issues, shape memory fiber, flame-retardant / flame-proof fiber, UV-shielding fiber, insect-proof / tick-proof fiber, antibacterial fiber, extinguishing Functional fibers such as odor fibers, high-texture / high-texture fibers, and skin damage prevention fibers are being developed one after another, and are attracting the attention of the textile industry. Under such circumstances, animal and plant proteins such as sericin, silk fibroin, collagen, keratin, and soybean protein are applied to the fiber material for skin-friendly processing, that is, a texture and absorption. -Processing that imparts functions such as moisture release, deodorant, antistatic, antioxidant, UV shielding, antibacterial, and skin damage prevention has been studied, and some of them have been put into practical use. Patent Document 3 describes a synthetic fiber having improved moisture absorption and desorption by physically imparting sericin to the fiber by imparting water-insoluble sericin to the hollow hole of the polyester-based synthetic fiber having a hollow hole. It has been published. Non-Patent Document 1 describes the functions of sericin, sericin fixing fibers, and sericin fixing fibers.

Tokusho 58-208456 Gazette Japanese Unexamined Patent Publication No. 2011-236537 Tokuhei 6-17372 Gazette

Textiles and Industry Vol. 57 No. 10 (2001) p. 279

Silk fiber is an animal protein and contains 18 kinds of amino acids necessary for the human body. Silk consists of two proteins, sericin and fibroin, and the amino acid composition of sericin is similar to that of skin, so it has the effect of activating skin cells and preventing skin aging. Therefore, it is preferable to use silk fiber as a cloth for the surface of clothing or bedding because the above effects are exhibited. However, silk with residual silk-derived sericin is hard and stiff as a fabric. In addition, when silk alone is used as a fabric, silk cannot be used for a long period of time because it has low friction durability with the skin and the outside. In addition, when used for innerwear, bedding / bedding, towels, socks, etc., the chances of washing are greatly increased, and repeated washing causes deterioration of texture, luster, bulkiness, and elasticity due to threads and shape destruction. In particular, there is a big problem that the fibers become hard due to threads and fibrillation that tend to occur when wet, and the texture, luster, bulkiness, and elasticity are lost. When one layer of natural silk fiber is put inside the laminated body sheet, the amino acids inside are gradually released when worn, which produces a skin-beautifying effect. However, there is also a problem that if the silk fiber is sandwiched between the fabrics, the silk fiber will come out from the inside if the silk fiber is used for a long time.

The invention disclosed in Patent Document 1 is a laminated silk web manufactured by manufacturing a flat cocoon for mass production of silk web so as to satisfy the conditions as a material for batting, and is bonded with residual sericin. , Not enough adhesive ability. Further, when the laminated body as in Patent Document 1 is washed, sericin is hardened and loses elasticity and volume, and it is difficult to use it in a clean state for a long period of time while maintaining the texture.

The invention disclosed in Patent Document 2 uses washable raw silk (sericin-fixed silk filament) obtained by twisting 4 to 20 threads drawn from a cocoon and heat-treating a raw silk having a certain thickness with a specific cross-linking agent. The pile fabric and the textile product containing the pile fabric are complicated in manufacturing method, and there remains a problem in economic efficiency.

In the invention disclosed in Patent Document 3, by imparting water-insoluble sericin to the hollow pores of the polyester-based synthetic fiber having hollow pores, sericin is physically imparted to the fiber, and the moisture absorption / desorption property is improved. Since it is a synthetic fiber and is physically imparted with sericin, it cannot be said that the washing durability is good.

Therefore, as a result of diligent research, the inventor of the present application sandwiches silk fibers and polyester composite fibers between two battings and heat-welds them to form a stable mesh state entwined with each other, resulting in washing. We have found that the hardening of sericin is suppressed, the elasticity and volume can be maintained even after washing, the skin cells are activated, and the skin aging is prevented, and the present invention has been reached.

That is, the present inventor has solved the above problems by the following means.
[1] The first batting, the first resin fiber layer arranged on the first batting, and
The silk fiber layer arranged on the first resin fiber layer and
The resin fiber layer arranged on the silk fiber layer and
A silk fiber laminated batting sheet in which a laminate containing a second batting arranged on the second polyester composite fiber layer is integrated by heating.
[2] The silk fiber laminated batting sheet according to [1], wherein both the first batting and the second batting are composed of batting in which chemical fiber cotton is formed into a sheet shape.
[3] The silk fiber laminated batting sheet according to [1], wherein both the first resin fiber layer and the second resin fiber layer are composed of polyester composite fibers.
[4] The silk fiber laminated batting sheet according to [1], wherein the silk fiber laminated batting sheet has a thickness of 4.0 to 100 mm.
[5] Clothing containing the silk fiber laminated batting sheet according to any one of [1] to [4].
[6] Bedding containing the silk fiber laminated batting sheet according to any one of [1] to [4].
[7] A method for manufacturing a silk fiber laminated batting sheet.
(1) A step of arranging the first resin fiber on the first batting arranged on the base to form the first resin fiber layer, and
(2) A process of arranging silk fibers on the first resin fiber layer to form a silk fiber layer, and
(3) A step of arranging the second resin fiber on the silk fiber layer to form the second resin fiber layer, and
(4) A step of arranging the second batting on the second resin fiber layer to obtain a pre-heated laminate, and
(5) The method including the step of heating the preheating laminate.

According to the present invention, the following effects are exhibited.
In the silk fiber laminated batting sheet of the present invention, silk fibers and polyester composite fibers are sandwiched between two battings and heat-welded to form a stable mesh state in which they are entangled with each other, thereby curing sericin by washing. Since it is suppressed and can maintain elasticity and volume even after washing, it is possible to impart washing durability while maintaining the functionality of silk, and it is possible to flexibly meet the diversifying demand for silk fibers. ..

Silk has high moisture absorption and desorption properties, high heat retention, light weight, and functions such as resistance to dust because it does not easily generate static electricity, and has a unique soft texture, volume, and luster.

In addition, silk fiber is an animal protein and contains 18 kinds of amino acids necessary for the human body. Silk consists of two proteins, sericin and fibroin, and the amino acid composition of sericin is similar to that of skin, so it has the effect of activating skin cells and preventing skin aging.

Since the silk fiber laminated batting sheet of the present invention uses silk staple fibers, the material cost is lower than that of using raw silk, so that the cost can be reduced.

The silk fiber laminated batting sheet of the present invention is heat-welded and has a total thickness of about 4 to 100 mm, so that it can be treated as if it were a single layer of batting, and it is easy to use as batting for clothing and bedding, as it is. It can be cut and sewn, and it is easy to manufacture.

Since the resin fiber layer is made of polyester composite fiber, it becomes easy to maintain elasticity and volume even after washing. Furthermore, since the material cost is low, the cost can be reduced.

The silk fiber laminated batting sheet of the present invention has elasticity in both the vertical and horizontal directions due to heat welding, and when used for clothing, it not only has high heat retention, but also is easy to wear and move. In addition to bedding and clothing batting, it can also be used as bedding fabric or clothing fabric without being stiff.

Further, the silk fiber laminated batting sheet according to the present invention has a structure in which the silk fiber layer is covered with the batting of chemical fiber cotton, so that it is resistant to moisture and water and is suitable as a filling material for clothing and bedding. ..

When the first batting and the second batting are polyester cotton, the first batting, the polyester contained in the resin fiber layer, and the three layers of polyester of the second batting melt by heating and adhere to each other, so they are bonded separately. There is no need to apply an agent, there are few work processes, and it is easy to manufacture.

Further, the production of the silk fiber laminated batting sheet of the present invention is carried out.
A method for manufacturing silk fiber laminated batting sheets.
(1) A step of arranging the first resin fiber on the first batting arranged on the base to form the first resin fiber layer, and
(2) A process of arranging silk fibers on the first resin fiber layer to form a silk fiber layer, and
(3) A step of arranging the second resin fiber on the silk fiber layer to form the second resin fiber layer, and
(4) A step of arranging the second batting on the second resin fiber layer to obtain a pre-heated laminate, and
(5) The step of heating the pre-heating laminate is included.
In this specification, the high temperature chamber refers to a device that holds the laminated body at a temperature at which the laminated body can be heat welded.

FIG. 1 shows an explanatory cross-sectional view of a laminated body before heating after laminating each layer of the silk fiber laminated batting sheet of the present invention. FIG. 2 shows a schematic explanatory view (first step to fifth step) of the method for manufacturing the silk fiber laminated batting sheet of the present invention. FIG. 3 shows a cross-sectional view for explaining a finished product of the silk fiber laminated batting sheet of the present invention.

An embodiment for carrying out the silk fiber laminated batting sheet and the method for manufacturing the silk fiber laminated batting sheet according to the present invention will be described with reference to the drawings of Examples.

FIG. 1 is an explanatory sectional view of the pre-heated laminated body 6 of the silk fiber laminated batting sheet 7 of the present invention, and FIG. 2 is a schematic explanatory view of a method for manufacturing the silk fiber laminated batting sheet 7 of the present invention. In 2, 1 is the first batting, 2 is the first polyester composite fiber layer, 3 is the silk fiber layer, 4 is the second polyester composite fiber layer, and 5 is the second batting.

FIG. 3 shows a sectional view for explaining a finished product of the silk fiber laminated batting sheet 7 of the present invention, in which the first polyester composite fiber layer 2 and the silk fiber layer 3 and the silk fiber layer 3 and the second polyester composite fiber layer 4 are shown. By heat welding, they form a stable network state in which they are entwined with each other.
As used herein, "entanglement" means a state in which fibers are entangled with each other.

In this embodiment, the first batting 1 and the second batting 5 are composed of batting in which chemical fiber cotton is formed into a sheet shape. The chemical fiber cotton is cotton produced from the chemical fiber, and examples of the chemical fiber of the chemical fiber cotton include recycled fiber, semi-synthetic fiber, synthetic fiber, and inorganic fiber. In particular, synthetic fibers such as polyester, nylon, and polypropylene are suitable, and fibers of a plurality of materials may be composited. In this embodiment, polyester cotton is formed into a sheet and used as batting.

Further, in this embodiment, the first batting 1 and the second batting 5 are not particularly limited. When the silk fiber laminated batting sheet 7 is made thinner and lighter depending on the intended use, the thin batting is used as the first batting 1 and the second batting 5. On the contrary, in order to make the entire silk fiber laminated batting sheet 7 thick and heavy to have higher heat retention, the first batting 1 and the second batting 5 are configured by giving them a high basis weight and a thickness.
The first batting 1 and the second batting 5 may be made of the same material, for example, polyester batting, or may be batting made of different materials. Further, even if the basis weights of the first batting 1 and the second batting 5 are the same, one may be light and the other may be heavy.

In this embodiment, the first polyester composite fiber layer 2 and the second polyester composite fiber layer 4 are composed of polyester composite fibers. The polyester composite fiber constituting the first polyester composite fiber layer 2 and the second polyester composite fiber layer 4 is a fiber in which two or more kinds of polymers having different properties are composited with a base, and in this embodiment, PET (polyester terephthalate) is used. A polyester-based composite fiber in which two types of polymer components of PTT (polytrimethylene terephthalate) are composited is used. Although it is possible to substitute acetate-based or acrylic-based composite fibers, PET's characteristics of light weight, quick-drying, heat resistance, durability, and PTT's characteristics of high elasticity, shape stability, and softness are possible. A polyester composite fiber that has a composite feel is suitable. Further, since the polyester composite fiber is thermoplastic, at least a part thereof becomes an adhesive by heating, and by heat welding with the silk fiber layer 3, a stable mesh state entwined with each other is formed, and the first batting 1 and the first batting 1 Contributes to firmly adhering to the second batting 5.
Further, the resins constituting the first polyester composite fiber layer 2 and the second polyester composite fiber layer 4 may be the same or different.

The composite fiber in which two or more kinds of polymers having different properties constituting the first polyester composite fiber layer 2 and the second polyester composite fiber layer 4 are composited may have excessive elasticity as in the case of 100% polyester. In addition, since the shrinkage rates of the plurality of polymers are different from each other, crimping occurs in the raw yarn and elasticity occurs, so that the silk fiber laminated batting sheet 7 of the present invention has an effect of providing high elasticity. In some cases.

At least one of the first polyester composite fiber layer 2 and the second polyester composite fiber layer 4 of the silk fiber laminated batting sheet 7 of the present invention may contain cupra fibers, if necessary.
Cupra fiber is a regenerated fiber obtained by dissolving cotton linter, which is a short fiber of natural cotton, in a chemical and processing it into fiber, and is a fiber containing cellulose as a main component.
The cupra fiber has a high wet strength, which is the strength when wet with water, and by mixing the polyester composite fiber layer cupra fiber, the silk fiber laminated batting sheet 7 is provided with excellent water absorption and hygroscopicity.

The polyester composite fiber layer is a silk fiber laminated batting sheet that is more suitable for the application by appropriately adjusting the amount of fibers to be mixed according to the intended use of the silk fiber laminated batting sheet 7, adjusting the content, and mixing. 7 can be provided.

In this embodiment, the silk fiber layer 3 is composed of silk fibers. Examples of silk fibers include long fibers and short fibers. Silk filament is a raw silk that is made by twisting several threads from a cocoon into a single thread, which is glossy and is used for high-class clothing. Spinnings produced by spinning secondary silk yarns produced during the production of raw silk and filaments (long fibers) taken out from poor quality cocoons are classified as silk staple fibers, and are bulkier and softer than raw silk twisted yarns. Has a nice tactile sensation.
As the silk fibers constituting the silk fiber layer, it is preferable to use silk staple fibers from the viewpoint of cost reduction.
In this embodiment, in order to utilize the effect of sericin on the skin, it is preferable to use silk fibers (sericin-containing silk fibers) that have not been treated to remove sericin in order to bring out the luster and feel of silk.
The length of the short fibers is approximately 20 mm to 150 mm, preferably 25 m to 100 mm.

The silk fiber laminated batting sheet 7 of the present invention has an overall thickness of 4.0 to 100.0 mm, and is configured as if it were a single layer of batting. This is because if it is too thin, heat retention cannot be ensured, and if it is too thick, it is bulky and loses its light weight, making it difficult to perform manufacturing operations such as cutting and sewing.
Therefore, if the thickness of the silk fiber laminated batting sheet 7 is adjusted to be about 4.0 to 100.0 mm by adjusting the basis weight of the first batting and the second batting and the mixing ratio of each fiber in the mixed fiber layer, it is lightweight and not bulky. It is suitable because it can be treated as if it were a single layer of batting, it is easy to use as batting for clothing and bedding, and it is easy to perform manufacturing operations such as cutting and sewing.

The silk fiber laminated batting sheet 7 of the present invention is configured as if it were a single layer of batting as described above and can be handled as a heat insulating material. It can be used to manufacture any warmth products such as clothing such as hats and bedding such as comforters and mattresses. Specifically, it can be put in clothing or bedding instead of feathers.
Further, the silk fiber laminated batting sheet 7 according to the present invention can also be used for a part of various clothing and bedding. For example, by using the silk fiber laminated batting sheet 7 only for the front body and the back body of the jacket and using the existing thin fabric for the sleeves, it is possible to manufacture clothing with high design.
Similarly, for bedding, the silk fiber laminated batting sheet 7 of the present invention can be used as a part of the side fabric.

Since the silk fiber laminated batting sheet 7 of the present invention is a sheet body completed as a material for heat insulation, it can be filled and interspersed regardless of the type of side fabric, regardless of whether it is used for clothing or bedding. As the side fabric, for example, natural fibers such as cotton, wool and linen, recycled fibers such as rayon, synthetic fibers such as polyester, nylon and acrylic fibers, and natural or synthetic leather can be used.
Furthermore, since it has moderate elasticity and high wet strength, it can be used as a cushioning material for bags and the like.

Next, the method for manufacturing the silk fiber laminated batting sheet 7 of the present invention will be described with reference to FIGS. 2 and 3.
As an example of the manufacturing method of the silk fiber laminated batting sheet 7 of the present invention,
(1) A step of arranging the batting on the base, forming the first batting 1, arranging the first polyester composite fiber on the first batting 1 with a 3D printer, and forming the first polyester composite fiber layer 2. ,
(2) A step of arranging silk fibers on the first polyester composite fiber layer 2 with a 3D printer to form the silk fiber layer 3 and
(3) A step of arranging the second polyester composite fiber on the silk fiber layer 3 with a 3D printer to form the second polyester composite fiber layer 4 and the process of forming the second polyester composite fiber layer 4.
(4) A step of arranging the batting on the second polyester composite fiber layer 4 to form the second batting 5 and
(5) The process includes a step of laminating each layer, moving the layers to a high temperature chamber, and heating the layers.

The first batting 1 is placed on the base (not shown) so that the side on which the first polyester composite fiber layer 2 is laminated faces the upper surface, and a 3D printer (not shown) is used on the upper surface of the first batting 1. The first polyester composite fiber is arranged to form the first polyester composite fiber layer 2 (first step, FIG. 2A). By arranging it using a 3D printer, it can be evenly arranged on the first batting 1. The polyester composite fiber layer is preferably reticulated from the viewpoint of being able to be arranged in a well-balanced manner. The basis weight of the first polyester composite fiber layer 2 is not particularly limited and can be appropriately changed depending on the intended use. Here, the base is a base on which the dough and each layer can be stably placed when laminating. If it is a base having heat resistance, it can be placed in a high temperature chamber together with the preheating laminate 8 to carry out the heating step.

Then, the silk fiber is arranged on the first polyester composite fiber layer 2 with a 3D printer to form the silk fiber layer 3 (second step, FIG. 2 (b)). The basis weight of the silk fiber layer 3 is not particularly limited and can be appropriately changed depending on the intended use.

The second polyester composite fiber is placed on the silk fiber layer 3 with a 3D printer to form the second polyester composite fiber layer 4 (third step, FIG. 2 (c)). The basis weight of the second polyester composite fiber layer 4 is ◯ to ◯ g / m ² , and can be appropriately changed depending on the intended use.

Next, the batting is placed on the second polyester composite fiber layer 4 to form the second batting 5 (4th step, FIG. 2 (d)).

The preheated laminated body 6 obtained by forming the second batting 5 is moved to a high temperature chamber and integrated by heat welding to form a silk fiber laminated batting sheet 7 (5th step, FIG. 2 (e)).
In the silk fiber laminated batting sheet 7 of this embodiment, polyester cotton is used for the first batting 1 and the second batting 5, and the silk fiber layer 3 is sandwiched between the first polyester composite fiber layer 2 and the second polyester composite fiber layer 4. When these are heated, at least a part of them becomes sticky, and the silk fibers are tightly sealed to the first batting 2 and the second batting 8, and even if they are used, there is a concern that they will come out from the silk fiber laminated batting sheet 7. do not have. The polyester resin melted by heating is entirely heat-welded and integrated to form the silk fiber laminated batting sheet 7 as if it were one layer.
The temperature of the high greenhouse is not limited as long as it can be heat-welded, but is set to, for example, 150 to 250 ° C.
200 degrees in the arrow of FIG. 2 indicates that the heating is performed at 200 ° C. By this heating, the pre-heated laminated body 6 can be integrated to form the silk fiber laminated batting sheet 7. In addition, when heating, it is possible to positively pressurize, but it is necessary to apply pressure so that the total thickness is 1.0 to 20.0 mm, and it is preferable to heat without applying pressure from the outside. It is preferable to do so.
Even when the thermoplastic chemical fiber is not used for the first batting 1 and the second batting 5, the adhesive can be sufficiently firmly adhered, but when the adhesive strength is further enhanced, for example, with each batting. An adhesive or the like may be applied between the polyester composite fiber layers to ensure heat welding.

The production of the silk fiber laminated batting sheet 7 of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

The silk fiber laminated batting sheet according to the present invention is thin, lightweight, not bulky, has hygroscopicity and heat generation, and has the effect of activating skin cells and preventing skin aging. It can be used not only for down jackets, but also for shirts, trousers, skirts, inners, hats, gloves, boot uppers and bags, duvets, blankets, sheets, trousers, and other cloth products that require heat retention.

1 First batting 2 First polyester composite fiber layer 3 Silk fiber layer 4 Second polyester composite fiber layer 5 Second batting 6 Pre-heated laminate 7 Silk fiber laminated batting sheet

Claims (7)

With the first batting,
The first resin fiber layer arranged on the first batting and
The silk fiber layer arranged on the first resin fiber layer and
The second resin fiber layer arranged on the silk fiber layer and
Includes a second batting placed on top of the second resin fiber layer.
A silk fiber laminated batting sheet in which the first resin fiber layer and the silk fiber layer are at least partially entangled with each other, and the silk fiber layer and the second resin fiber layer are at least partially entangled with each other. .. The silk fiber laminated batting sheet according to claim 1, wherein both the first batting and the second batting are composed of batting in which chemical fiber cotton is formed into a sheet shape. The silk fiber laminated batting sheet according to claim 1, wherein both the first resin fiber layer and the second resin fiber layer are made of polyester composite fibers. The silk fiber laminated batting sheet according to claim 1, wherein the thickness of the silk fiber laminated batting sheet is 4.0 to 100 mm. Clothing containing the silk fiber laminated batting sheet according to any one of claims 1 to 4. Bedding comprising the silk fiber laminated batting sheet according to any one of claims 1 to 4. A method for manufacturing silk fiber laminated batting sheets.
(1) A step of arranging the first resin fiber on the first batting arranged on the base to form the first resin fiber layer, and
(2) A process of arranging silk fibers on the first resin fiber layer to form a silk fiber layer, and
(3) A step of arranging the second resin fiber on the silk fiber layer to form the second resin fiber layer, and
(4) A step of arranging the second batting on the second resin fiber layer to obtain a pre-heated laminate, and
(5) The method including the step of heating the preheating laminate.

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