JP5877674B2 - Fiber structure - Google Patents

Description

  The present invention relates to a fiber structure having hygroscopic exothermic properties.

  Conventionally, a hygroscopic exothermic fiber that generates heat due to heat released when vapor moisture in the air changes to a liquid is known. Hygroscopic exothermic fibers are used, for example, in underwear, winter clothing, sports clothing, and in-shoe members that constitute shoe insoles and back lining of the upper (Patent Document 1).

  Such a hygroscopic exothermic fiber is a method in which a hygroscopic exothermic compound is directly kneaded into the resin constituting the fiber, or the hygroscopic exothermic compound is fixed to the surface of a fiber structure such as a knitted fabric, a woven fabric or a non-woven fabric via a binder resin. It is obtained from the method of making it.

  When the hygroscopic exothermic compound is fixed through the binder resin, there is a problem that the surface of the fiber structure is hardened by the binder resin and the texture is impaired. In particular, when a raised cloth is used as the fiber structure, it is easy to feel loosely, so it is not suitable for a part that directly touches the skin such as a member in a shoe, and does not impair the texture of the raised cloth. It was difficult to give.

  On the other hand, methods for improving the texture of the fiber structure include a method of imparting lubricity to the fiber using a softener, a natural oil-soluble substance such as avocado and olive oil, or a natural material such as animal or marine collagen. A method of improving the texture using a fiber treatment agent containing a moisturizing component is known (Patent Documents 2 and 3).

  A fiber structure treated with a treatment containing a natural moisturizing component has safety to the skin and moisturizing properties, and is excellent in texture, but moisture absorption exothermicity cannot be expected. In addition, there are cases where a pattern layer is formed by transfer printing or the like on the fiber structure depending on the application, but when the pattern layer is formed on the fiber structure treated with the treatment agent containing the moisturizing component, the pattern layer is peeled off by friction, There was a problem that the adhesive strength between the fiber structure and the pattern layer was inferior, such as inferior durability due to washing.

JP 2003-105657 A Japanese Patent Application Laid-Open No. 08-232166 JP 2004-308063 A

  The present invention was made to improve the texture of a moisture-absorbing exothermic fiber structure, and has an excellent texture by using a hygroscopic exothermic compound in combination with marine collagen, which is a natural moisturizing component. It is an object to provide a fiber structure having hygroscopic exothermic properties.

The present invention is a fiber structure in which a fiber treatment agent containing a hygroscopic exothermic compound and marine collagen is fixed , wherein the hygroscopic exothermic compound and marine collagen contained in the fiber treatment agent are in a weight ratio. 2.5: 1 to 16: 1, characterized in that the combined amount of the hygroscopic exothermic compound and marine collagen is 0.5 to 20 g / m ² in a dry state. It is a fiber structure.

In the present invention, by using a hygroscopic exothermic compound and marine collagen in combination, a fiber structure having an excellent textured hygroscopic exothermic property, which was not obtained with only the hygroscopic exothermic compound, is obtained, and the hygroscopic exothermic property is also obtained . If the weight ratio of the compound and marine collagen and the amount of fixation are within a specific range, the temperature rise immediately after moisture absorption becomes large, so that the fiber structure can feel a hygroscopic exothermic effect immediately after touching the skin.

Moreover, it is preferable that the weight ratio of the hygroscopic exothermic compound and the marine collagen in the fiber treatment agent is blended at 4: 1 to 16: 1 .

Within this range, when a patterned layer such as a printed pattern, brand display, or size display is formed on the fiber structure, sufficient adhesive strength between the fiber structure and the pattern layer can be obtained. It is suitable for use as a member in which the wear resistance of the pattern layer is required, such as an in-shoe member such as a backing cloth, in which friction is repeated by contact with a foot or the like.

  As described above, the fiber structure of the present invention has a moisture absorption and exothermic property with an excellent texture, and since the effect of the moisture absorption and exothermic effect is felt immediately after touching the skin, shoes that directly touch the skin. Suitable for inner member.

  The present invention can provide a fiber structure having a moisture-exothermic exotherm that has an excellent texture that could not be obtained by using only a hygroscopic exothermic compound by using a hygroscopic exothermic compound and marine collagen that is a natural moisturizing component. it can.

  In addition, the fiber structure of the present invention, to which a fiber treatment agent containing a hygroscopic exothermic compound and marine collagen in a specific weight ratio is fixed, is excellent in hygroscopic exothermic property and texture, and increases in temperature immediately after moisture absorption. Therefore, the effect of moisture absorption and exotherm is felt immediately after touching the skin, which is suitable for a member that directly touches the skin, such as a shoe inner member.

  Furthermore, the fiber structure of the present invention to which a fiber treatment agent containing a moisture-absorbing exothermic compound and marine collagen in a specific weight ratio is fixed may be used when a pattern layer is formed on the fiber structure. Since the adhesion between the fiber structure and the pattern layer is not impaired, it is suitable as a member that requires the wear resistance of the pattern layer.

It is a figure which shows the result of the hygroscopic exothermic test in a present Example. It is a figure which shows the result of the hygroscopic exothermic test in a comparative example.

  The present invention is a fiber structure in which a fiber treating agent containing a hygroscopic exothermic compound and marine collagen is fixed.

  The hygroscopic exothermic compound of the present invention is not particularly limited as long as the hygroscopic exothermic compound having an amino group, a hydroxyl group, a sulfo group, a carboxyl group, a phosphoric acid group and the like can be obtained, but a polycarboxylic acid compound is preferable. It is.

  As the polycarboxylic acid compound, a polymer of one kind compound or a copolymer of several kinds of compounds selected from acrylic acid, methacrylic acid, maleic acid, fumaric acid and esters with these alcohols, and Examples thereof include a copolymer of the polymer with vinyl sulfonic acid, or a metal salt of these polycarboxylic acid compounds.

  The metal forming the salt with the polycarboxylic acid compound is not particularly limited, but Li, Na, K, Cu, Zn, Al, Ni, Co, Fe, Mn, Mg, Ca, Sn, Cr, etc. Can be mentioned.

  The molecular weight of the polycarboxylic acid-based compound is not particularly limited, but in order to obtain high durability, those having a molecular weight of 2000 or more are preferable, and those having a molecular weight of 5,000 to 100,000 are particularly durable. It is preferable from the aspect of fixing and having a texture after processing.

In the present invention, marine collagen is used as a natural moisturizing component.
Collagen is one of proteins and is a rod-like molecule having a triple helical structure, and has many hydrophilic groups, and therefore has excellent moisture retention. Collagen is extracted from the skin, bones, scales, and the like of animals and fish and is used in cosmetics and health foods as a highly safe natural moisturizing component.
Collagen is broadly classified into animal and marine. Among them, marine collagen is safer than animal collagen and has a characteristic that it does not emit odor even when its concentration is increased. Suitable as a treating agent.
The raw material for marine collagen used in the present invention may be saltwater fish or freshwater fish, and the epidermis such as tuna (yellowfin), shark, cod, flounder, flounder, Thailand, tilapia, salmon, sardines, etc. Extracted from tissues such as bones, scales, tendons, and floats using a known method.

  The hygroscopic exothermic compound and marine collagen of the present invention may be fixed to the surface of the fiber structure via a binder resin or a cross-linking agent. , Binder resin, cross-linking agent, other additives and the like may be included.

  The binder resin is not particularly limited as long as it can be used as a normal fiber treatment agent such as an acrylic resin, a urethane resin, a silicon resin, an ethylene vinyl acetate resin, or a mixture thereof. Absent.

  As the crosslinking agent, for example, those having a polyfunctional group such as one kind or a mixture of several kinds selected from melamine resin, epoxy resin, glyoxy resin, blocked isocyanate derivative or polyglycidyl derivative can be used, and are particularly limited. It is not a thing.

  Furthermore, additives such as an antibacterial deodorant, a deodorant, a sewability improver, a flame retardant, an antistatic agent, an antifouling agent, and an antislip agent may be added. In this case, the addition amount may be a level that does not impair the moisture absorption exothermic property and moisture retention.

  Examples of the solvent include water, and organic solvents such as methanol, ethanol, isopropyl alcohol, and water is preferable in consideration of environmental load.

  The hygroscopic exothermic compound and marine collagen contained in the fiber treating agent are preferably blended so that the weight ratio is 2.5: 1 to 16: 1, and more preferably 4: 1 to 16: 1. More preferable.

When the amount of the hygroscopic exothermic compound is less than 2.5 times that of marine collagen, the resulting fiber structure feels excellent, but the hygroscopic exothermic effect is difficult to obtain. Moreover, when the compounding quantity of a hygroscopic exothermic compound exceeds 16 times with respect to marine collagen, although it is excellent in the hygroscopic exothermic effect of the fiber structure obtained, it exists in the tendency for a texture to be impaired.
In addition, the fiber structure to which the fiber treatment agent in which the moisture absorption exothermic compound and marine collagen are blended at a weight ratio of 2.5: 1 to 16: 1 is fixed increases the temperature immediately after moisture absorption. It becomes a fiber structure in which a moisture absorption exothermic effect can be felt immediately after touching.

In addition, when forming a pattern layer such as a print pattern, brand display, size display, etc. on the fiber structure, the fiber structure and the pattern can be used if the amount of the hygroscopic exothermic compound is 4 to 16 times that of marine collagen Adhesive strength with the layer can be obtained sufficiently. For example, wear resistance of the pattern layer is required, such as in-shoe members such as insoles and instep lining materials, where friction is repeated by contact with the foot. It is suitable for use as a member.

Further, the fixed amount of the hygroscopic exothermic compound and the marine collagen combined is preferably 0.5 to 20 g / m ² , more preferably ³ to 10 g / m ² in a dry state.
When the fixing amount is less than 0.5 g / m ² , it becomes difficult to obtain the hygroscopic exothermic effect. When it exceeds 20 g / m ² , the hygroscopic exothermic effect is obtained, but marine collagen is used in combination. However, the texture tends to be rough and the texture tends to be inferior.

Examples of the fiber structure to which the fiber treating agent is fixed include synthetic fibers such as polyester, nylon, polyacryl, and polyamide, natural fibers such as cotton, silk, and wool, or woven fabrics and knitted fabrics composed of mixed materials thereof. Nonwoven fabrics and brushed fabrics can be used.
In particular, when a raised fabric was treated with a fiber treatment agent, the fibers were likely to harden and the touch tended to be poor, but when the fiber treatment agent of the present invention was used, the fibers did not harden and the touch was poor. Moisture absorption and heat generation can be imparted while maintaining the original feel of the blanket.

  As a method for fixing the fiber treatment agent to the fiber structure, a known technique may be used, and examples thereof include coating, impregnation, spraying and the like, and are not particularly limited.

  Since the fiber structure of the present invention has a moisture-absorbing exothermic property with an excellent texture that could not be obtained with only a moisture-absorbing exothermic compound by using a moisture-absorbing exothermic compound in combination with marine collagen, which is a natural moisturizing component, It can be used for a member in contact with the skin.

In addition, by using a fiber treatment agent in which the weight ratio of the hygroscopic exothermic compound to marine collagen is 2.5: 1 to 16: 1, the amount of fixation of the hygroscopic exothermic compound and the marine collagen is adjusted. The fiber structure of the present invention having a dry state of 0.5 to 20 g / m ² is excellent in texture and moisture absorption exotherm, and further increases in temperature immediately after moisture absorption. Therefore, for example, when this fiber structure is used for an in-shoe member constituting an insole or an insole cloth material, an effect of moisture absorption and exotherm can be felt immediately after wearing the shoe using the in-shoe member. It is possible to provide shoes that can keep cold feet in winter and the like.

Furthermore, using a fiber treatment agent in which the weight ratio of the hygroscopic exothermic compound and marine collagen is 4: 1 to 16: 1, the fixed amount of the combined hygroscopic exothermic compound and marine collagen is dried. Even if it is a case where the fiber structure of this invention made into 0.5-20 g / m < ² > in a state forms a pattern layer, it does not impair the adhesiveness of a fiber structure and a pattern layer. Therefore, for example, it is suitable as a member requiring wear resistance of the pattern layer in which friction is repeated by contact with a foot or the like, such as an in-shoe member such as an insole or an insole cloth material.

  EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to these examples.

[Examples 1 to 4 and Comparative Examples 1 to 5 ]
A polycarboxylic acid-based compound was used as the hygroscopic exothermic compound, and an hygroscopic exothermic compound, marine collagen, and an epoxy resin as a crosslinking agent were dispersed in an aqueous solvent to obtain a fiber treating agent. At this time, the hygroscopic exothermic compound and marine collagen were blended in the weight ratio of each component shown in Tables 1 and 2.
Next, each fiber treatment agent was impregnated in 100% polyester brushed cloth having a thickness of 2 mm, and then dried at 150 to 155 ° C. for 2 minutes to obtain a fiber structure. The impregnation treatment was performed using padding by continuously dipping the raised cloth sufficiently into the fiber treating agent and squeezing with two rolls at a constant pressure. In addition, the roll pressure at this time was 0.5 MPa, and the fixed amount including the hygroscopic exothermic compound and marine collagen fixed to the fiber structure after drying was 5 g / m ² .

  The following evaluation was performed about the obtained fiber structure. The results are shown in Tables 1 and 2.

[Hygroscopic heat generation]
The obtained fiber structure is cut into a size of 80 mm in length and 80 mm in width, folded into two, dried with a hot air dryer with the temperature sensor sandwiched between them, and the temperature of the temperature sensor in the silica gel desiccator is Cooled to 20 ° C. After cooling, the temperature was measured at intervals of 1 minute for 15 minutes, starting from a desiccator with a relative humidity of 90% and a temperature of 20 ° C. FIG. 1 shows the temperature difference between Examples 1 to 4 and Comparative Examples 4 and 5, and Comparative Example 1 and FIG. 2 shows the temperature difference with Comparative Example 1 in Comparative Examples 2 to 3.
<Evaluation criteria>
The temperature difference after 5 minutes with Comparative Example 1, which is an untreated fiber structure,
◎: 1.5 ° C or more ○: 1.0 ° C or more and less than 1.5 ° C △: 0.5 ° C or more and less than 1.0 ° C ×: Less than 0.5 ° C

[Moisture retention]
5 g of the obtained fiber structure was suspended in a desiccator containing a saturated aqueous ammonium chloride solution at 20 ° C. and a relative humidity of 80%, and the weight (a) of the fiber structure after moisture absorption for 5 hours was measured. The fiber structure after the measurement was dried at 105 ° C. for 45 minutes to be in an absolutely dry state, left in a desiccator for about 10 to 15 minutes, and the weight (b) of the completely dry fiber structure was measured. The moisturizing rate was calculated from the following formula 1.

Moisturizing rate (%) = {(ab) / b} × 100 (Formula 1)

<Evaluation criteria>
◎: Moisturizing rate is 1.5% or more ○: Moisturizing rate is 1.25% or more and less than 1.5% △: Moisturizing rate is 1.0% or more and less than 1.25% ×: Moisturizing rate is less than 1.0%

[Texture]
◎: Has a moist touch that is not found in the fiber structure before treatment. ○: Has a touch almost the same as the fiber structure before treatment. △: Has a slightly harder feel than the fiber structure before treatment.

〔Adhesiveness〕
Taped to the fiber structure surface after treatment, peeling peel the tape was pasted by hand so that 180 °, was adhesiveness evaluation.
<Evaluation criteria>
◎: Adhesion almost equivalent to the fiber structure before treatment ○: Slightly weaker than the fiber structure before treatment △: Much weaker than the fiber structure before treatment ×: Not sticking at all

〔Comprehensive evaluation〕
◎: Particularly good ○: Good △: Usable ×: Usable applications are limited

In Examples 1 to 4 , the overall evaluation is Δ or higher, and the hygroscopic exothermic compound is excellent, and the hygroscopic exothermic compound and marine collagen are blended so that the weight ratio is 2.5: 1 to 16: 1. were it to fix the fiber-processing agent, raised fabric without damaging the original texture, it is possible to impart heat absorption property can not be obtained only heat absorption compound, fibrous structure having a moist and texture The body was obtained .

In addition , as shown in FIG. 1, in Examples 1 to 4, the initial temperature rise tends to be large, and a moisture absorption exothermic effect is felt immediately after touching the skin.

  Moreover, in Examples 1-3, comprehensive evaluation is (circle) or more, and while being excellent in moisture absorption exothermic property and texture, it was excellent also in adhesiveness. Thus, if the hygroscopic exothermic compound and the marine collagen are blended so as to have a weight ratio of 4: 1 to 16: 1, the fiber structure can be used even when the pattern layer is used. Since it does not impair the adhesion to the pattern layer, it is suitable as a member in which friction is repeated by contact with a foot such as an insole member such as an insole or an insole cloth material.

  Since the fiber structure of the present invention is excellent in texture and moisture absorption exothermic property, it is suitable for a member that directly touches the skin.

Claims (3)

A fiber structure formed by fixing a fiber treatment agent containing a hygroscopic exothermic compound and marine collagen ,
The moisture-absorbing exothermic compound and the marine collagen contained in the fiber treatment agent are blended in a weight ratio of 2.5: 1 to 16: 1,
A fiber structure , wherein a fixed amount of the hygroscopic exothermic compound and the marine collagen is 0.5 to 20 g / m ² in a dry state . The fiber structure according to claim 1, wherein the moisture-absorbing exothermic compound and the marine collagen contained in the fiber treatment agent are blended in a weight ratio of 4: 1 to 16: 1. . An in-shoe member comprising the fiber structure according to claim 1.