JP6067229B2 - Stretchable resin processed fabric - Google Patents

Description

The present invention relates to a stretchable resin processed fabric suitable for the sports field such as sports, fashion, and inner, and a method for producing the same.

Conventionally, resin processed fabrics pursuing design and functionality have been developed and studied, and various products using these have been put on the market.
For example, in Patent Document 1, by applying an elastic resin to the edge portion of the cut edge that constitutes the garment, the stretchability of the resulting resin prevents sliding and rising during wearing. Apparel that prevents fraying and curling of the cutting edge is disclosed.
Further, in Patent Document 2, the degree of freedom in stress difference is increased by laminating two or more resins by a printing method, and further, stress reduction after recovery from extension is prevented.

However, these resin processing according to the prior art has many limitations and problems and has a low degree of freedom.
For example, in the resin processing of Patent Document 1, if the amount of resin applied is too small, the functions and effects cannot be obtained sufficiently, and conversely if the amount of resin applied is too large, the resin excessively penetrates the fabric. There is a problem that the texture of the fabric becomes coarse and hard. As described above, the amount of resin that can be applied is limited in conventional resin processing.
Further, in Patent Document 2, since the resin liquid is pushed directly into the fabric, there is a possibility that the back of the resin leaks or the thickness of the formed resin film becomes non-uniform. It was insufficient in terms of freedom and prevention of stress reduction after stretching.
As described above, in the method of directly applying the resin liquid to the fabric, not only the performance but also the quality of the resin surface is not stable, which is a big problem on the product.

JP 2007-186829 A WO2010-030029 publication

The present invention has been made in view of such a current situation, and applies the tightening force of a stretch fabric that has been subjected to resin processing to a target position without being influenced by the resin permeability due to the fabric structure or the like. An object of the present invention is to provide a stretchable resin-processed fabric that can be used, and has excellent durability, fastness, appearance quality, texture, touch, and the like.

To achieve the above object, stretch resin-finished fabric according to a first aspect of the present invention, the resin film having elasticity a partially formed elastic resin-finished fabric on the elastic cloth The elastic resin film contains a heat-adhesive resin obtained by using a combination of an aqueous emulsion type resin and a powder resin, and the resin film is formed in a uniform amount regardless of the structure of the stretchable fabric. And the amount of the resin having thermal adhesiveness is 20 to 200 g / m ² with respect to the fabric, and the tightening force of the fabric having the portion on which the resin film is formed is that the resin film is formed. It has a portion that is 1.3 times or more of the tightening force of a non-woven fabric, and the tightening force retention after repeated expansion and contraction of the fabric having the portion on which the resin film is formed is 50% or more. .
Moreover, it is preferable to have the part in which the said resin film which has several different tightening force was formed.
Moreover , it is preferable that the part in which the said resin film was formed is flocked.
In order to achieve the above object, a method for producing a stretchable resin processed fabric according to the second aspect of the present invention is a method for producing a stretchable resin processed fabric in which a resin film having elasticity is partially formed. The resin film having elasticity contains a heat-adhesive resin comprising a combination of a water-based emulsion type resin and a powder resin, and is formed on a release material by a printing method and then stretchable by thermocompression bonding. It is characterized by being adhered to a fabric.

According to the present invention, it is possible to impart excellent tightening force to a target position without being influenced by the structure or the like of the stretchable fabric, and durability, fastness, appearance quality, texture, touch, etc. In addition, it is possible to provide a stretchable resin processed fabric that is also excellent.

It is the schematic which shows the embodiment example of this invention. FIG. 6 is a schematic diagram illustrating another example embodiment of the present invention. It is the schematic which shows the example planted by the heat bondable resin of this invention.

The stretchable resin-processed fabric of the present invention provides a tightening force at an arbitrary position by forming a resin film at an arbitrary position on the stretchable fabric. Because it is laminated on the stretchable fabric by thermal bonding, a uniform amount of resin film can be formed on the stretchable fabric regardless of the fabric structure, and it has a stable tightening force and stretchability with little decrease in tightening force even after repeated stretching. A resin processed fabric can be provided.

The constituent fibers of the stretchable fabric used in the present invention include polyesters such as polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), nylons such as nylon 6 and nylon 66, acrylic, and polyvinyl alcohol. Synthetic fibers such as polyurethane, semi-synthetic fibers such as acetate, regenerated fibers such as rayon, natural fibers such as cotton, hemp, wool, silk, and those mixed with these, etc. are not particularly limited .
Further, the configuration of the stretchable fabric used in the present invention is not particularly limited, such as a woven fabric, a knitted fabric, a non-woven fabric, or an interwoven fabric of the above-mentioned fibers, but includes a polyurethane elastic yarn. It is preferable to have elasticity. By using a stretchable fabric including a polyurethane elastic yarn, the stretchable resin-treated fabric of the present invention can retain stretchability even during repeated stretch, and the stretchable resin-processed fabric of the present invention is used. Since it follows a wearer's movement when it is used as clothing, it is excellent in wearing feeling.
The stretchable fabric preferably has an elongation of 30 to 300% in both the vertical and horizontal directions, and more preferably 50 to 250%, in the elongation measurement method described later. If it is less than 30%, it is difficult to follow the movement of the wearer when it is used as clothing, and there is a possibility that the feeling of wear will be poor, and if it exceeds 300%, the adhesion to the body and the fit may be reduced. .

The resin having elasticity in the present invention includes a resin having thermal adhesiveness, and has elasticity when a resin film is formed on the fabric. The resin film of the present invention can be bonded to the stretchable fabric by thermocompression bonding by providing a resin layer having thermal adhesiveness on the fabric bonding surface side.
The resin having thermal adhesiveness refers to a resin that is softened and fluidized and has adhesiveness to the fabric when pressed at 70 ° C. or higher according to the fabric.
The resin film of the present invention may be only an elastic resin layer having thermal adhesiveness, and an elastic resin layer not having thermal adhesiveness may be appropriately laminated on the anti-fabric side of the resin layer having thermal adhesiveness as necessary. Also good.
Examples of the elastic resin having thermal adhesiveness include polyurethane resins, acrylic resins, polyester resins, polyamide resins, polyolefin resins, and the like, and polyurethane resins are preferably used in terms of physical properties and fastness.
Examples of the elastic resin that does not have thermal adhesiveness include polyurethane resin, acrylic resin, silicone resin, and the like, and polyurethane resin from the viewpoint of physical properties and cost is preferably used.
As the form of these resins, specifically, an aqueous emulsion type, an oily type, a powder or the like is used alone or in combination, but an aqueous emulsion type and a powder combined type are preferable from the viewpoint of productivity and performance. used.
Since the formed resin film has elasticity, it is possible to prevent a decrease in tightening force after repeated expansion and contraction of the resin portion, and since the texture does not become hard, it is possible to provide a stretchable resin processed fabric excellent in wearing feeling. .

In addition, the stretchable resin processed fabric of the present invention has a portion in which the tightening force of the fabric having the portion to which the resin film is bonded is 1.3 times or more than the tightening force of the fabric to which the resin film is not bonded. And more preferably 1.5 times or more, and the upper limit is 50 times.
If it is less than 1.3 times, it may not be possible to obtain the necessary tightening force when worn as clothing, or the body shape of the wearer may be corrected or reshaped, posture correction, improvement of motor function, etc. There is a possibility that the function cannot be fully exhibited. On the other hand, if it exceeds 50 times, the texture becomes coarse and hard, and the feeling of wearing may be poor.

In addition, the stretchable resin processed fabric of the present invention is characterized in that the tightening force retention after repeated stretching of a fabric having a portion to which a resin film is adhered is 50% or more, and is 60% or more. Is preferred. When the tightening force retention rate after repeated stretching recovery at the tightening portion is less than 50%, the initial tightening force of the tightening portion having the resin portion when worn as clothing using the stretchable resin processed fabric of the present invention There is a great difference in the tightening force after repeated wearing, and even if worn repeatedly, there is a possibility that functions such as correction or shaping of the wearer's body shape, correction of posture, improvement of motor function, etc. cannot be fully exhibited. In addition, the method of repeated expansion and contraction in the present invention is performed by the method shown in the examples described later.

In addition, the stretchable resin processed fabric of the present invention preferably has a plurality of resin film portions having different tightening forces. Having a resin film portion having a plurality of different tightening forces is, for example, formed by providing the resin film layer shown in FIG. 1 and the resin film portion shown in FIG. 2 on the same fabric, By using a known method such as changing the thickness, area, or pattern shape of the elastic resin film to be bonded, or changing the type of resin to be used, the tightening force can be made different.
If there is only one type of tightening force for the resin film part, the design area is reduced due to the limited pattern area and shape with respect to the required tightening force, and the texture is hardened by increasing the pattern area. Inconvenience such as occurrence of stuffiness may occur, and the merchantability may be reduced.

The stretchable fabric used in the present invention preferably has an opening ratio of 10 to 80% before the elastic resin film is bonded. If the opening ratio is less than 10%, when the product is a resin-treated cloth that tends to have a low air permeability, there is a risk that the fabric will be more fragile and the comfort may be impaired, and the opening ratio of the stretchable fabric is 80. If it is larger than%, there is a possibility that a material that satisfies the stretchability and strength of the stretchable fabric itself cannot be obtained.
In direct coating and direct textile printing methods, the resin liquid enters the fabric voids of the fabric having a high opening ratio, and the resin liquid oozes out on the back of the fabric (the skin surface when used as a product), resulting in poor touch. Alternatively, a uniform resin film cannot be formed on the fabric surface, and it becomes difficult to maintain the tightening force after repeated expansion and contraction, and the appearance quality is not stable. According to the present invention, since the resin film is once formed on the release material and then transferred and adhered to the fabric, it is easy to control the penetration of the resin film into the fabric, and a stable tightening force and appearance quality can be obtained. I can do it.

Moreover, it is preferable that the resin part of the stretchable resin processed fabric of the present invention is flocked. When the flocked surface is used on the skin side, the effect of weakening irritation to the skin or suppressing the occurrence of stuffiness can be obtained. Moreover, when the flocked surface is used on the front side, excellent design properties can also be obtained.

Next, a method for producing the resin film of the present invention will be described.
The release material used in the present invention is only required to have releasability and heat resistance. The surface of the release material is a substantially flat material such as a resin film such as polyester, synthetic paper, or fabric, and is released on the surface. In order to obtain moldability, a resin having releasability such as an olefin resin, silicone resin, acrylic resin, nylon resin, polyester resin, etc., is applied on the substrate alone or in combination, or It can also be obtained by bonding it to a substrate after it is formed into a film. In addition, by applying embossing to the release material or adding particles to a resin liquid having releasability, the resin film can be given a matte appearance, powder-like tactile sensation, lubricity, etc. . Further, the resin film can be given a glossy appearance and an anti-slip effect by subjecting the release material to a smooth treatment with a calendar or the like.

A resin solution for forming an elastic resin film is applied on the release material produced as described above. As a coating method, a screen printing method or a rotary printing method can be used. After applying the resin solution, a dry film is formed. The drying temperature is appropriately set depending on the type of resin used and the like, but is generally dried at a temperature of 80 to 130 ° C. to form a resin film.
Further, in order to provide a plurality of resin film portions having different tightening forces, resin films having different tightening forces can be simultaneously formed on the same release material.
By applying a solution containing an elastic resin on the release material by printing and drying repeatedly, a predetermined amount is laminated, so even with the same component resin, the thickness of the resin layer can be changed, or resin types with different stresses can be selected. Partial placement is possible. When a higher tightening force retention rate is required, a resin layer that does not have thermal adhesiveness can be provided in the thermal adhesive resin film or laminated on the thermal adhesive resin film. Moreover, when the resin layer which does not have thermal adhesiveness is provided in the resin part surface side (anti-skin surface side), it can be set as the resin processed cloth excellent in heat-resistant blocking property.
Various additives can be added to the resin film for the purpose of improving physical properties, functionality, and design properties. For example, for the purpose of improving physical properties, polyethylene wax, silicone resin, light resistance improver and the like can be added. Moreover, in order to improve functionality, a retroreflective material, a phosphorescent pigment, an antibacterial agent, a far-infrared absorber, a magnetic body, a deodorizing agent, etc. can also be added. Moreover, when giving designability, the thermal foaming agent etc. for expressing an unevenness | corrugation other than bright pigments, such as an organic pigment, an inorganic pigment, a glitter, and a pearl pigment, can be added.

When creating the resin film, the amount of resin applied on the release material can be set as appropriate according to the function required when making a garment, but the amount of the resin having a thermal bonding layer is 20 to 200 g / m ² is preferred. When the resin amount is less than 20 g / m ² , the adhesive strength to the stretchable fabric is insufficient, and the resin may be peeled off or dropped by washing or repeated stretching. On the other hand, if it exceeds 200 g / m ² , the resin permeation into the stretchable material becomes excessive, the resin oozes out to the back side of the adhesive surface, or the texture becomes rough.

The term “thermocompression bonding” as used in the present invention means that the resin film and the stretchable fabric are hot pressed together at a temperature of 70 to 180 ° C. and a pressure of 5 to 50 kPa for about 10 to 60 seconds. Specifically, a flat press machine, a felt calender machine, or the like is used, but it is not limited.

In the present invention, the shape, thickness and area of the resin film part bonded to the stretchable fabric vary depending on the functions required when it is used as clothing, but the entire area is covered with the resin film. The resin film portion may be interspersed. The definition within a certain range will be described in the tightening force measurement method, but it is within the range of 2.5 cm width and 5 cm length. The same applies to a non-tightening portion that does not have a resin film.

In the present invention, flocking can be applied to the elastic resin film portion. The flocking process requires that the heat-adhesive resin face the opposite side of the resin film adhered to the stretchable fabric to the side adhered to the stretchable fabric. In this case, it may be the same as the heat-adhesive elastic resin layer bonded to the fabric, or a resin layer not having the heat-adhesion layer may be formed between the heat-adhesive elastic resin layers.
After the resin film is thermally bonded to the stretchable fabric and the release material is peeled off, the stretched resin is flocked to the resin portion by further thermally bonding the flocked paper to the resin surface and peeling after cooling. A processed fabric is obtained. Flocked paper is a fiber pile that is electrostatically flocked on paper coated with an adhesive. Rayon, nylon, etc. are used as the fiber pile, and a pile length of 0.3-2 mm is preferably used. Is done.

Moreover, a resin film is formed on the flocked paper as another technique for flocking. A resin layer having a thermal adhesive property is laminated on the fabric bonding surface to form a resin film, and the flocking process is applied to the resin portion of the stretchable fabric by peeling the flocked paper after thermocompression bonding and cooling according to the stretchable fabric. A stretchable resin processed fabric is obtained.

EXAMPLES Hereinafter, although an Example demonstrates this invention concretely, this invention is not limited to these at all. In addition, about the method of measurement and evaluation in an Example, it carried out as follows.

[Tightening force ratio]
Using an Instron universal tensile tester (manufactured by Shimadzu Corporation, Autograph AG-1), a test cloth cut into a width of 2.5 cm and a length of 10 cm was set at a measurement interval of 5 cm, and a tensile speed of 300 ± The elastic force (strengthening portion) having a portion to which an elastic resin is bonded and the portion having an elastic resin bonded thereto are not used as a tightening force with a stress value when stretched by 30% at 20 mm / min. Each of the stretchable fabrics (non-tightening portions) was measured, and the tightening force ratio was determined by the following formula. Note that sampling from the tightening portion in this measurement is cut out in the vertical and horizontal directions from the portion including the most resin adhesive portion within the measurement area range (2.5 cm × 5 cm). The non-tightening portion is cut out in a vertical and horizontal direction from a portion having no resin portion.
(Tightening force ratio) = (tightening force of tightening part) / (tightening force of non-tightening part)

[Tightening force retention rate]
In the above-described tightening force measurement method, 30% elongation recovery was performed 10 times, and the tightening force retention rate (%) was obtained from the first and tenth tightening forces according to the following equation.
(Tightening force retention [%]) = (10th tightening force) / (1st tightening force) × 100%

[Aperture ratio]
When the stretchable fabric is magnified and observed with a microscope, it is represented by a ratio in which the back surface can be seen without being shielded by the yarn and the structure.

[Appearance quality]
The appearance quality of the resin part was evaluated based on the following criteria.
○: Uniform quality without being affected by the structure of the stretchable fabric ×: Uneven quality due to the effect of the structure of the stretchable fabric

[Elongation of elastic fabric]
The elongation of the stretchable fabric is cut into a width 2.5 cm × length 10 cm from the vertical and horizontal directions of the stretchable fabric using an Instron universal tensile tester (manufactured by Shimadzu Corporation, Autograph AG-1). The test cloth was set at a measurement interval of 5 cm, and the elongation was measured when a load of 22.1 N was applied.

[Example 1]
(1) Production of stretchable fabric 75% nylon yarn (44 dtex / 34 filament) and 25% polyurethane elastic yarn (308 dtex) were knitted in a power net structure. The produced stretchable fabric had a thickness of 340 μm, a weight of 170 g / m ² , an elongation in the vertical direction of 140%, an elongation in the horizontal direction of 120%, and an opening ratio of 27%.

(2) Preparation of Resin Liquid A The following components were mixed to prepare a resin liquid A having a viscosity adjusted to 25000 cps / 20 ° C.
<Components of resin liquid A>
Thermal adhesive polyurethane resin (Daiichi Kogyo Seiyaku Co., Ltd., Superflex 500) 50 parts by mass Polyurethane particles (Nippon Polyurethane Co., Ltd., Pearlsen U-100A) 50 parts by mass Blocked isocyanate-based crosslinking agent (manufactured by Hayashi Chemical Industry Co., Ltd.) , Oxar UL-3) 5 parts by mass black pigment (DIC Corporation, DEXCEL BLACK HR) 5 parts by mass polyacrylic acid thickener (manufactured by Hayashi Chemical Industry Co., Ltd., thickener)

(3) Production of screen printing plate A screen printing plate for applying a resin on the release material was produced.
As the screen plate, a 50-mesh ridge was used, and a pattern was formed on the ridge by a conventional plate making method at a predetermined position. The pattern shape at this time was a square (10 cm × 10 cm), and the thickness of the screen plate was 100 μm.

(4) Resin film production process The resin A was applied onto a release material (manufactured by LINTEC, No. FN PXDH type) with a rubber squeegee using an automatic printing machine and dried at 100 ° C. . The resin coating amount at this time was 45 g / m ² (dry weight).

(5) Thermocompression bonding process The release paper on which the resin film was formed and the stretchable fabric were combined and pressed using a hot press machine at 150 ° C. and 15 kPa for 30 seconds. After cooling, the release paper was peeled off.

As described above, the stretchable resin processed fabric of Example 1 was obtained through the steps (1) to (5).
The evaluation results of the stretchable resin processed fabric of Example 1 are shown in Table 1.

[Example 2]
A resin film was prepared on a release paper in the same manner as in Example 1 using a resin liquid B having a viscosity of 25000 cps / 20 ° C. obtained by mixing the following components. The resin coating amount of the obtained resin film was 32 g / m ² (dry weight). Further, on the elastic resin film having no thermal adhesiveness, the resin liquid A is applied in the same manner as in Example 1 to provide a resin film having thermal adhesiveness, and an elastic resin film having no thermal adhesiveness; A resin film laminated with an elastic resin film having thermal adhesiveness was obtained. The resin coating amount of the elastic resin film having thermal adhesiveness was 43 g / m ² . Thereafter, the stretchable resin processed fabric of Example 2 was obtained in the same manner as Example 1. The evaluation results are shown in Table 1.
<Components of Resin Liquid B>
Polyurethane resin without thermal adhesiveness (Daiichi Kogyo Seiyaku Co., Ltd., Superflex E4800)
100 parts by mass paraffinic resin (manufactured by Hayashi Chemical Industry Co., Ltd., anti-blocking agent) 10 parts by mass block isocyanate-based crosslinking agent (manufactured by Hayashi Chemical Industry Co., Ltd., Oxar UL-3) 5 parts by mass black pigment (manufactured by DIC Corporation, DEXCEL BLACK HR) 5 parts by mass polyacrylic acid thickener (made by Hayashi Chemical Industry Co., Ltd., thickener)

[Example 3]
After obtaining a stretchable resin processed fabric in the same manner as in Example 1, a flocked paper (pile type: nylon, fiber length: 1.0 mm, thickness: 1.5 d) was matched to the resin part, and 160 ° C., 20 kPa. After pressing and cooling for 30 seconds, the flocked paper was peeled off to obtain a stretchable resin processed fabric of Example 2 in which the resin part was flocked.
The evaluation results are shown in Table 1.

[Example 4]
The stretchable fabric in Example 1 was used by knitting 62% cationized polyester (33 dtex / 26 filament) and 38% polyurethane elastic yarn (44 dtex) into a 36G tricot half structure. The produced stretchable fabric had a thickness of 380 μm, a weight of 225 g / m ² , an elongation in the vertical direction of 150%, an elongation in the horizontal direction of 125%, and an opening ratio of 3%. A stretchable resin processed fabric was obtained by processing in the same manner as in Example 1 except that the stretchable fabric was changed. The evaluation results are shown in Table 1.

[Comparative Example 1]
Resin liquid A was directly applied to the stretchable fabric produced in Example 1 using the screen plate produced in Example 1, and heat-dried at 150 ° C. for 60 seconds to obtain a stretchable resin processed fabric of Comparative Example 1. . The amount of resin applied at this time was 58 g / m ² (dry weight). The evaluation results are shown in Table 1.

[Comparative Example 2]
Except that the screen plate used in Example 1 was changed to 100 mesh (thickness 70 microns), it was processed in the same manner as Example 1 to obtain a stretchable resin processed fabric. The evaluation results are shown in Table 1.

[Evaluation]
The stretchable resin processed fabrics obtained in Examples 1, 2, 3 and 4 all had a high tightening force ratio and a tightening force retention rate, and thus had high adhesion and a correction effect. . Moreover, it was excellent in appearance quality and texture. On the other hand, the resin processed fabric obtained in Comparative Example 1 is not only inferior in appearance quality and texture due to the resin liquid oozing out on the back of the fabric as well as the desired tightening force retention rate. It was. Further, in Comparative Example 2, the required tightening force ratio could not be obtained because the amount of resin having thermal adhesion was insufficient.

DESCRIPTION OF SYMBOLS 1 Stretchable resin processed fabric 2 Stretchable fabric 3 Thermal adhesive elastic resin film 4 Non-thermal adhesive elastic resin film 5 Flocking

Claims (4)

Resin film having elasticity is a partially-formed elastic resin-finished fabric on the elastic cloth, resin film having the elastic is used in combination with an aqueous emulsion type resin and the powder resin heat A resin having adhesiveness is contained, the resin film is formed in a uniform amount regardless of the structure of the stretchable fabric, and the amount of the resin having thermal adhesiveness is 20 to 200 g / m ^{2 with} respect to the fabric. And a portion having a tightening force of the fabric having the resin film formed thereon is 1.3 times or more of a tightening force of the fabric having no resin film formed thereon. A stretchable resin processed fabric, wherein the fabric having the formed portion has a tightening force retention after repeated stretching of 50% or more. The stretchable resin processed fabric according to claim 1, further comprising a portion on which the resin film having a plurality of different tightening forces is formed. 3. The stretchable resin processed fabric according to claim 1 or 2 , wherein the portion where the resin film is formed is flocked. A method for manufacturing a stretchable resin processed fabric in which a resin film having elasticity is partially formed, wherein the resin film having elasticity has a thermal adhesiveness formed by using a combination of an aqueous emulsion type resin and a powder resin. A method for producing a stretchable resin processed fabric, comprising: a resin having a resin composition, formed on a release material by a printing method, and then bonded to the stretchable fabric by thermocompression bonding.

Images