JP2011255588A - Elastic base material and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve elasticity, air permeability and sliding difficulty in an elastic base material.SOLUTION: The elastic base material 1 is formed by sticking a network 2 consisting of a thermoplastic elastomer material that softens by heating at predetermined temperature and a fabric 3 or a knitted fabric consisting of a chemical fiber that has heat resistance at the predetermined temperature by heat fusion at the predetermined temperature. A method for producing the elastic base material includes a process of sticking the network 2 consisting of the thermoplastic elastomer material that softens by heating at predetermined temperature and the fabric 3 or the knitted fabric consisting of the chemical fiber that has heat resistance at the predetermined temperature by heat fusion at the predetermined temperature.

Description

  The present invention relates to a stretchable substrate and a method for producing the same, and particularly to a laminate of a net (net) made of an elastomer material and another substrate. The present invention also relates to various articles using such a stretchable substrate.

  Conventionally, a stretchable base material obtained by bonding a net made of an elastomer material and a nonwoven fabric is known (Patent Documents 1 to 3). Patent Document 1 discloses a technique in which an elastic resin layer made of a styrene elastomer is laminated on one surface of a nonwoven fabric, and then a continuous linear elastic network is formed using an engraving roll. Patent Documents 2 and 3 disclose techniques in which a nonwoven fabric is laminated on one or both sides of a net made of an elastomer material, and subjected to water jet (high pressure liquid flow treatment) to entangle the net and the nonwoven fabric.

JP 2006-104611 A JP 2000-80553 A JP 2000-301635 A

  As described above, the stretchable base material in which the net made of the elastomer material and the nonwoven fabric are bonded together is publicly known, but it is applied because there are limitations in terms of stretchability, breathability, and difficulty in slipping of the nonwoven fabric itself. Applications were limited.

  An object of the present invention is to provide a stretchable base material excellent in stretchability, breathability and slip resistance, and a method for producing the same.

  The stretchable base material of the present invention comprises a network made of a thermoplastic elastomer material that is softened by heating at a predetermined temperature, and a woven or knitted fabric made of chemical fiber that has heat resistance at the predetermined temperature. It is formed by bonding by heat fusion.

  The method for producing a stretchable substrate of the present invention comprises a network made of a thermoplastic elastomer material that is heat-softened at a predetermined temperature, and a woven fabric or a knitted fabric made of a chemical fiber having heat resistance at the predetermined temperature. It includes a step of bonding by heat fusion at a predetermined temperature.

  A net-like body made of a thermoplastic elastomer material and a woven fabric or knitted fabric made of a chemical fiber are bonded together by thermal fusion at a predetermined temperature, whereby the net-like body is heated and melted and joined to the woven fabric or knitted fabric. The inventor of the present application can satisfy the following two conditions: (1) the net-like body is heated and softened at a predetermined temperature, and (2) the woven fabric or the knitted fabric has heat resistance at the predetermined temperature. It has been found that any woven or knitted fabric can be joined to the network. Since the stretchable base material of the present invention uses a woven fabric or a knitted fabric with a wide selection range in terms of properties such as stretchability, air permeability, and non-slip properties, a conventionally known laminate of a nonwoven fabric and a net-like body is used. Compared to the body, it is possible to obtain characteristics superior to the nonwoven fabric in these aspects.

  Instead of the above, the stretchable base material of the present invention may be formed by adhering a network made of an elastomer material and a woven or knitted fabric made of a chemical fiber with an adhesive. Moreover, the manufacturing method of the elastic base material of this invention may include the process of bonding together the net-like body which consists of elastomer materials, and the textile fabric or knitted fabric which consists of chemical fiber with an adhesive agent.

  ADVANTAGE OF THE INVENTION According to this invention, the stretchable base material excellent in stretchability, air permeability, and non-slip property, and its manufacturing method can be provided.

It is the top view and sectional drawing of the elastic base material of this invention. It is the schematic which shows the manufacturing method of the elastic base material shown in FIG. It is the top view and sectional drawing which show other embodiment of the elastic base material of this invention. It is the schematic which shows the manufacturing method of the elastic base material shown in FIG. It is a top view which shows the modification of the elastic base material shown in FIG.

  Hereinafter, the stretchable base material of the present invention and the manufacturing method thereof will be described with reference to the drawings.

  FIG. 1 is a plan view and a cross-sectional view of the stretchable base material of the present invention. The figure (a) is a top view of an elastic base material, and the figure (b) is a sectional view which met an AA line of the figure (a). The stretchable base material 1 is formed by heat-sealing (or thermocompression bonding) a net (net) 2 and a woven fabric 3 made of chemical fibers. The net 2 is made of a thermoplastic elastomer material that is heated and softened at a predetermined temperature. The woven fabric 3 has heat resistance at the predetermined temperature, and is bonded to the mesh body 2 by heat fusion (or thermocompression bonding) at the predetermined temperature. Since pressure is applied at the time of heat-sealing, the upper end portion of the mesh body 2 and the joint portion with the fabric 3 have a relatively flat shape.

  The net-like body 2 can be formed from a styrene-based elastomer, a urethane-based elastomer, or the like. Styrene elastomers include styrene-ethylene-butylene-styrene copolymer (SEBS), styrene-ethylene-propylene-styrene copolymer (SEPS), styrene-isoprene-styrene copolymer (SIS), styrene-butylene- Examples thereof include styrene copolymer (SBS). As an example, a trade name “Rebound” (styrene-isoprene, block polymer) manufactured by Conwed Net Corporation may be mentioned. Examples of the urethane elastomer include polyester, low molecular glycol, methylene bisphenyl isocyanate, and tolidine diisocyanate.

  Although the chemical fiber used as a material of the fabric 3 is not particularly limited, any chemical fiber can be used as long as it has heat resistance at the temperature at the time of heat-sealing. Chemical fibers include natural fibers (natural polymers) made from recycled fibers, semi-synthetic fibers produced by modifying natural polymers, synthetic fibers that are purely synthetic organic polymer compounds, inorganic Inorganic fibers made of compounds are included. The fabric 3 can be formed from, for example, nylon or polyester.

  Since the stretchable base material 1 configured as described above includes a net-like body 2 made of an elastomer as a material, a large stretchability can be obtained by the elasticity of the net-like body 2. In addition, by appropriately selecting the woven fabric 3, the stretchable base material 1 can be imparted with properties such as the inherent breathability and non-slip property of the woven fabric. Since the mesh body 2 has a large opening, the air permeability of the fabric 3 is not obstructed at all, and the physical properties of the mesh body itself and the shape protruding from the fabric 3 can further improve the slip resistance. it can. Also, a unique design can be obtained by a novel combination of the mesh body 2 and the woven fabric.

FIG. 2 is a schematic view showing a method for producing the stretchable substrate 1 of the present invention. The net-like body 2 and the woven fabric 3 are separately fed from the supply rolls 4 and 5 and are continuously supplied between a pair of pressure rolls (heat fusion means) 6 and 7. The mesh body 2 and the fabric 3 supplied to the pressure rolls 6 and 7 are pressurized and heated by the pressure rolls 6 and 7 and heat-sealed. Styrene elastomers and urethane elastomers are generally heated and melted at 100 to 200 ° C. For this reason, about 100-200 degreeC is desirable for the heating temperature with a pressure roll. Further, the pressure applied by the pressure rolls 6 and 7 is preferably about 1 to 30 N / cm ² .

  After passing through the pressure rolls 6 and 7, the mesh 2 is softened under pressure, adheres to the fabric 3 and hardens again. This adhesive force was sufficient for application to an article described later, and no peeling occurred after use. Moreover, since the stretchable base material 1 manufactured in this way does not use a chemical adhesive such as a chemical bond, it is less harmful to the human body even when applied directly to the human skin and is gentle to the body. Elastic material can be provided.

  Before the mesh body 2 and the fabric 3 are heat-sealed, the mesh body 2 passes through the tension rolls 8 and 9. As a result, a tensile force (pretension) in a direction parallel to the supply direction F of the mesh body 2 to the pressure rolls 6 and 7 is given to the mesh body 2. The net 2 is supplied to the pressure rolls 6 and 7 while being stretched and stretched, and is heat-sealed to the fabric 3. For this reason, after the heat fusion, the tensile force of the mesh body 2 is released, and the fabric 3 is relaxed. At the time of use, the net-like body 2 can be extended without difficulty until the fabric 3 is in tension. In this way, the stretchable base material 1 is given sufficient stretchability in the direction in which the pretension is applied. The pretension may be applied not only in a direction parallel to the supply direction F of the mesh body 2 but also in a direction orthogonal to the supply direction F or in both directions. This makes it possible to impart stretchability in one direction or two directions as required. Furthermore, the mesh body 2 and the woven fabric 3 can be bonded together without pretensioning.

  FIG. 3 is a view similar to FIG. 1 showing another embodiment of the stretchable base material of the present invention. In the stretchable base material 1 ′ of the present embodiment, the woven fabric 3 ′ is bonded only to a partial region of the mesh body 2. Specifically, the woven fabric 3 ′ is divided into a plurality of blocks 31, and each block 31 is bonded to different areas 32 of the mesh body 2 at intervals. That is, a part of the net-like body 2 is a region 33 where the fabric 3 'is not bonded. This region 33 extends linearly in this embodiment. In the region 33, the mesh body 2 can freely expand and contract without being constrained by the fabric 3, so that a stretchable base material 1 'with further improved stretchability is obtained. Further, since the region 33 has only the reticulate body 2 and has many voids, it is possible to further improve the air permeability and to impart a unique design.

  Such a stretchable base material 1 'can be produced by a method basically similar to the method shown in FIG. At this time, as shown in FIG. 4, the woven fabric 3 ′ may be bonded to the mesh body 2 as a block 31 divided in the supply direction F of the mesh body 2. In such a stretchable substrate 1 ′, stretchability is ensured in the region 33 where the fabric 3 ′ is not bonded, and thus it is not always necessary to apply the above-described pretension. However, if a pretension is applied in a direction parallel to the supply direction F of the mesh body 2 by the tension rolls 8 and 9, the stretchable base material 1 'with further improved stretchability can be provided.

  The division direction of the block is not limited to the supply direction F of the mesh body 2 and may be a direction orthogonal to the supply direction F of the mesh body 2. Also in this case, the direction of the pretension is not limited at all, and the direction parallel to the supply direction F of the mesh 2, the direction orthogonal thereto, or both may be used.

  Furthermore, as shown in FIG. 5, the woven fabric 3 'itself can be divided into blocks 31 in a matrix form in the vertical and horizontal directions. Such a stretchable base material 1 ″ is provided with sufficient stretchability vertically and horizontally without any pretension.

  In the above-described embodiment, the woven fabrics 3, 3 'made of chemical fibers and the mesh body 2 are heat-sealed. However, the knitted fabric made of chemical fibers and the mesh body 2 can be heat-sealed. The knitted fabric is inherently excellent in stretchability and breathability, and by combining this with the mesh body 2, further stretchability can be imparted to the stretchable substrate. Further, the net-like body 2 may be formed not only on one side of the woven fabric and knitted fabric but also on both sides.

  Further, an adhesive can be used in place of heat fusion. That is, the stretchable substrate may be formed by adhering a net-like body made of an elastomer material and a woven or knitted fabric made of a chemical fiber with an adhesive. Moreover, the manufacturing method of an elastic base material may include the process of bonding together the net-like body which consists of an elastomer material, and the textile fabric or knitted fabric which consists of chemical fiber with an adhesive agent. Glue can be used as the adhesive, and a curtain spray method in which the glue is threaded and sprayed with the adhesive can be suitably used. According to the curtain spray method, bonding can be performed while maintaining shrinkage.

  The stretchable base material described above can be applied to various articles by taking advantage of part or all of the properties such as stretchability, air permeability, and difficulty of sliding. As an example, use for shoes, supporters, gloves, socks, etc. can be considered. About shoes, it can utilize suitably especially in the field | areas which require the elasticity and breathability like a sports shoe. The supporter is mainly used for medical and sports applications, and stretchability is particularly important. However, since the breathability and the difficulty of sliding are also required, the present invention can be suitably used. The same applies to gloves and socks. Some of these articles need only be stretchable in only one direction, or may be preferable to have stretchability in only one direction. As an example, a supporter attached to a joint part is required to have a large stretchability in the direction of bending of the joint, but not so much shrinkage is required in a direction perpendicular thereto, and in some cases, excessive shrinkage is a feeling of wearing. Leads to worsening. In such a case, according to the present invention, a stretchable base material having a large stretchability in one direction is created, and the high stretchability direction coincides with the direction in which high stretchability is required in each article. In addition, each article may be manufactured.

1,1 ', 1 "stretchable base material 2 mesh 3,3' fabric

Claims (13)

  Stretchability in which a net made of a thermoplastic elastomer material that is softened by heating at a predetermined temperature and a woven or knitted fabric made of chemical fiber that has heat resistance at the predetermined temperature are bonded together by thermal fusion at the predetermined temperature. Base material. The network is made of a styrene elastomer or a urethane elastomer, and the woven or knitted fabric is made of nylon or polyester, and is thermocompression bonded under conditions of a heating temperature of 100 to 200 ° C and a pressure of 1 to 30 N / cm ^2. 2. The stretchable substrate according to 1.   A stretchable base material in which a net made of an elastomer material and a woven or knitted fabric made of a chemical fiber are bonded together with an adhesive.   The stretchable group according to any one of claims 1 to 3, wherein the woven fabric or the knitted fabric includes a plurality of blocks, and the blocks are bonded to different regions of the mesh body at intervals. Wood.   A shoe having the stretchable base material according to any one of claims 1 to 4.   The supporter which has a stretchable base material of any one of Claim 1 to 4.   A glove having the stretchable base material according to any one of claims 1 to 4.   A sock having the stretchable base material according to any one of claims 1 to 4.   A step of bonding a network made of a thermoplastic elastomer material that is softened by heating at a predetermined temperature and a woven or knitted fabric made of a chemical fiber that has heat resistance at the predetermined temperature by heat fusion at the predetermined temperature. The manufacturing method of an elastic base material. The network is made of styrene elastomer or urethane elastomer, the woven fabric or knitted fabric is made of nylon or polyester, and the network and the woven fabric or knitted fabric have heating conditions in which the predetermined temperature is in the range of 100 to 200 ° C. And the manufacturing method of the elastic base material of Claim 9 thermocompression-bonded on pressurization conditions with a pressure of 1-30 N / cm < ² >.   The method for producing a stretchable base material according to claim 9 or 10, wherein the net-like body is given a tensile force before being thermally fused to the woven fabric or knitted fabric.   A method for producing a stretchable substrate, comprising a step of adhering a network made of an elastomer material and a woven or knitted fabric made of a chemical fiber with an adhesive.   The stretchable base material according to any one of claims 9 to 12, wherein the woven fabric or the knitted fabric includes a plurality of blocks, and the blocks are bonded to different regions of the mesh body at intervals. Manufacturing method.

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