JPS6123393Y2 - - Google Patents

Description

[Detailed description of the invention] This invention features deeply carved unevenness on the surface of the woven or knitted material (hereinafter referred to as the "cloth surface") that clearly shows even the minute details of the pattern, and a deep transparency. The present invention also relates to a novel three-dimensional patterned cloth material that has both luster and luster.

Traditionally, natural or synthetic leather, leather, textiles,
In fields such as clothing, interior decoration, various miscellaneous goods, and vehicle seats, where secondary fiber products such as knitted fabrics are used as they are or in combination, new materials are constantly being developed to improve products and develop new products. Efforts are being made to improve development and quality.

From the above point of view, the inventor of the present invention has created a product that is intermediate between leather and synthetic leather, which has an appearance and feel similar to plastic, and material that has the appearance and feel of secondary fiber products, such as woven and knitted fabrics, or both. We have developed a new material that combines the properties of
102744).

As shown in Figure 4, this new material consists of a fabric made of polyacrylic fibers and 1, 2-
This is an embossed pattern fabric material that is made by embossing a foam laminate with PBD foam using dielectric heating using high frequency waves.The above combination makes use of the unique texture of fabric products, while maintaining appropriate elasticity. We succeeded in creating deep carvings on the fabric surface that clearly reveal even the minute details of the pattern, which was previously impossible.

This invention further improves the embossed pattern cloth material mentioned above, giving the cloth surface a deep transparency and luster.
It also provides a three-dimensional patterned cloth material, which is a new fashion material that emphasizes the changes in the cloth surface by highlighting uneven patterns, textures, and stitches.Hereinafter, the present invention will be explained in detail based on the drawings.

1 and 2 show an example of the three-dimensional patterned cloth material 1 of the present invention, and this three-dimensional patterned cloth material 1 has a third
As shown in the figure, 1,2-polybutadiene resin, which is a partially crosslinked material that can also be dielectrically heated, is applied alone or together to the back side of a woven or knitted fabric 2 (hereinafter referred to as "fabric") made of dielectrically heatable polyacrylic fibers. A foam laminate 4 on which a foam 3 of a polymer blend as a component (hereinafter referred to as "1,2-PBD foam") is laminated is given a contour as shown in FIG. 4 using a high frequency dielectric heating method. A large number of sculptural recesses 5 are formed to form an embossed pattern cloth material 6, and as shown in FIG. It is made by sequentially applying urethane or urethane-acrylic paint. In the figure, reference numeral 9 is a laminating adhesive layer, and 10 is a lining made of a woven or knitted fabric laminated on the back surface of the foam 3, which is used as necessary.

The 1,2-PBD foam 3 is a dielectric formal (tan)
δ) is 0.0025 at 60Hz, and polyvinyl chloride (60
Although it is small compared to 0.01 to 0.15 in Hz, it is possible to slightly increase the temperature by high frequency, and it is also possible to heat a polar polymer such as vinyl acetate or olefin in an appropriate amount, for example in the range of 7:3 to 3:7. By adding it, the embossing characteristics can be improved. This 1,2-
The PBD foam 3 is made of 1,2-polybutadiene resin or a polymer blend containing 1,2-polybutadiene resin as one component.
Before foaming, the gel fraction is pre-crosslinked by, for example, an ultraviolet crosslinking method so that the gel fraction is within the range of 10 to 75% (gel fraction after 15 hours of boiling toluene), and then by a blowing agent decomposition method, etc. By changing the composition and expansion ratio, it can be made into a semi-rigid to soft foam having closed or open cells. It is highly elastic and has permanent elongation.
It has rubber-like behavior with extremely low compression set and good recovery properties, and is light, soft, and warm to the touch.

Furthermore, as mentioned above, since it is a partially crosslinked product, it remains thermoplastic, and although it softens when heated, it does not melt completely. Therefore, when heated and pressurized (the suitable temperature for embossing or thermoforming is 80~
The temperature is 130℃. ) A major feature is that the three-dimensional pattern of concave and convex portions is heat set, and the heated and pressurized areas have almost no difference in hardness, stretchability, and elasticity from other areas.

The 1,2-polybutadiene resin, which is the main raw material for the 1,2-PBD foam 3, has various properties, but in the present invention, the 1,2-bond is about 70% or more and the molecular weight is 100,000 or more, crystallinity 10~
50%, low crystalline high molecular weight material with syndiotactic stereoregularity of 20% or more and good thermal stability, moldability, photosensitivity, etc. (e.g. Nippon Synthetic Rubber)
Co., Ltd. (product names JSR, RB-810, etc.) are preferably used. In addition to the above-mentioned polymers, various polyolefins may be used to adjust the texture.

Next, the fabric 2 is made of polyacrylic material, especially the product name "Kanekalon" because it can be dielectrically heated and its softening temperature and melting temperature are close to those of 1,2-PBD foam.
Woven or knitted fabrics (tricot, stockinette, etc.) made of modacrylic fibers known as [manufactured by Kanegabuchi Chemical Industry Co., Ltd.], "Dynel" [manufactured by Union Carbide], etc.
is most preferred. Moreover, this modacrylic fiber has extremely excellent thermoformability. The laminating adhesive for bonding both 2 and 3 is preferably an acrylic or urethane adhesive that has excellent adhesion to polyacrylic fibers and 1,2-PBD foam.

Therefore, the embossed pattern cloth material 6 according to the present invention
, fabric 2 and moderate thickness (1 to several m/m) 1,
2-Heat and pressurize the foam laminate 4 with the PBD foam 3 from the fabric side using a mold attached to a high-frequency welder to apply the thickness of the foam to the fabric surface.
This creates a clear uneven pattern with a deep contour corresponding to the depth of the carving of the mold. In this case, the 1,2-PBD foam 3 is softened and compressed at the heated and pressurized area, and the unfoamed 1,2-PBD foam 3 is softened and compressed by the depth.
- It becomes a state approaching the PBD resin, and becomes a permanently stable recessed portion 5... At the same time, the fibers constituting the fabric 2 soften and spread to form the surface layer of the recess 5. When the heating temperature is further increased, a portion of both melts, and especially the bottom of the recess pressed by the mold becomes film-like or close to it. Since the peripheral edge portion of the recessed portion 5 is not affected by heat, the tension of the fabric 2 and the elasticity of the 1,2-PBD foam 3 are not lost, and the recessed portion exhibits an extremely sharp recessed state. , it is possible to create a deeply sculptural uneven pattern on the surface of the fabric 2, which was previously unimaginable. In addition, the recessed portion 5 does not essentially impair the texture before embossing due to the good thermoformability of the foam and fibers.

Next, in the three-dimensional patterned fabric material 1 of the present invention, an anchor coat 7 made of urethane emulsion is coated on the surface of the uneven fabric 2 of the embossed patterned fabric material 6.
A top coat 8 made of urethane or urethane acrylic paint is sequentially applied.

Anchor coat 7 is an emulsion in which vinyl acetate or acrylic emulsion 7 to 3 is mixed to urethane emulsion 3 to 7, and is used as a type of filler. That is, the paint solvent of the top coat 8 prevents the acrylic fibers of the fabric 2 from discoloring or swelling, and also suppresses the fuzz of the fibers on the fabric surface, making the fabric surface mirror-like. In addition, vinyl acetate or acrylic emulsion acts as an adhesive to fibers, and urethane emulsion acts as a bond to paint.
The amount of coating depends on the depth of embossing, but the dry film thickness is 30 to 100 microns, usually about 50 microns. Further, the coating is performed using a spray, a direct coater, a reverse coater, a roll coater, a doctor knife, etc., and is dried at about 80 to 100°C.

The top coat 8 is made of urethane or urethane.
Made of acrylic solvent-based transparent paint,
After the anchor coat is dried, it is similarly applied by spraying to a dry film thickness of about 5 to 15 μm, and dried at 80 to 100°C. It is also possible to add a silica-based eraser to this paint to make it translucent, or to use a paint mixed with a transparent pigment.

Next, in FIG. 5, a colored anchor coat 7', which is a urethane emulsion mixed with a water-based pigment, is embedded in the recesses 5 or the gaps between the weaves and stitches of the embossed pattern fabric material 6 using a doctor knife or a reverse coater. After staining the valleys, a clear anchor coat 7 is applied to the mountain areas, and then a top coat 8 is applied. As a result, the valleys or recessed portions 5 and the concave areas of the weaves and stitches take on a color different from the color of the fabric 2, highlighting these patterns and bringing about a change in the fabric surface. Incidentally, this valley cleaning may be carried out partially to reveal a pattern, or so-called mountain staining, in which a colored anchor coat 7' is applied to the mountain parts, may be applied to the fabric surface.

Each of the above examples describes the case where the anchor coat 7 is applied after embossing, but this anchor coat 7 is applied at the stage of foam lamination 4 (Fig. 3), and then embossing is applied. (The embossing temperature is about 80 to 100°C as in each of the above examples).

As mentioned above, the three-dimensional patterned cloth material of the present invention has the characteristics of internal heat generation and local heating due to dielectric heating by high frequency, the partially crosslinked 1,2-PBD foam that can be dielectrically heated and has good heat processability, and , 2-By combining PBD foam with a fabric made of polyacrylic fiber, which has a similar softening temperature and melting temperature, and which can be dielectrically heated and has good heat processability, a deep sculptural fine pattern can be clearly seen on the fabric surface. In addition to having an irregular pattern of an arbitrary shape as shown in the figure, the fabric surface is further coated with a urethane or urethane-acrylic paint via an anchor coat made of a urethane emulsion.

Therefore, the three-dimensional patterned fabric of the present invention, like the embossed patterned fabric on which it is based, has the appearance and elasticity unique to fabric, and the clearly defined uneven pattern appearing on the fabric surface is due to its depressions and protrusions. It has almost no texture, and its surface is covered in a glossy finish that retains the characteristic appearance of cloth. What's more, this luster is completely different from conventional plastic and leather products, as the interior uses threads such as thread weave, giving it a deep sense of perspective while retaining the solidity of cloth. In addition, the surface is water repellent because of the paint leather, prevents stains, and has excellent heat resistance. Furthermore,
Because the fabric is sandwiched between the 1,2-PBD foam and the paint film, there is no difference in modulus between the front and back sides, and it has many characteristics such as a leather-like feel.

Therefore, the three-dimensional patterned cloth material of the present invention can be said to be a material with an appearance and performance intermediate between that of leather, natural leather, and textile fabrics, and it is truly significant that it perfectly matches the needs of the recent market. is deep.

It is widely used as a component and covering material for various bags, interiors, furniture, vehicle seats, etc., and provides an innovative and useful material for these products. Furthermore, since this three-dimensional pattern cloth material is processed using a high-frequency welder,
The processing time is extremely short and it is suitable for mass production, and the foam composition and expansion ratio, the threads and texture of the fabric used, the type of anchor coat and top coat, the presence or absence of coloring, the presence or absence of lining, and its type can be varied. By changing and combining them, it is possible to easily obtain the optimal one for various uses.

Hereinafter, a more detailed explanation will be given with reference to Examples.

Example 1 Syndiotactic 1,2-polybutadiene [Product name JSR, RB-810, manufactured by Japan Synthetic Rubber Co., Ltd.] 50
parts (parts by weight) of ethylene-vinyl acetate copolymer [trade name Ultracene UE634, manufactured by Toyo Soda Co., Ltd.] 50
of azodicarbonamide as a blowing agent.
3.5 parts, P,P'oxybisbenzenesulfonyl hydrazide 1.5 parts, benzophenone as photosensitizer
The pellets mixed with 0.5 part of
A sheet of 0.45 m/m was continuously extruded, and the sheet was irradiated with ultraviolet rays from a distance of 45 cm on both sides for 4 minutes using a 1 Kv high-pressure mercury lamp (manufactured by Tokyo Shibaura Electric Co., Ltd., H4000/3), and then heated at 200°C. The foaming agent was decomposed to obtain an endless semi-open cell sheet having uniform, fine cells, a specific gravity of about 0.17, and a thickness of 1.2 m/m (expansion ratio of about 5 times). One side of this foam is coated with a two-component solvent-type polyurethane adhesive using a reverse coater, and a fabric made of modacrylic fiber [trade name: Kanekalon, manufactured by Kanebuchi Kagaku Kogyo Co., Ltd.] is laminated on the top side. and dried. After that, this foam laminate was supplied directly under the mold of a high-frequency welder heated to 80℃, the press plate was closed and pressure was applied (30Kg/cm ² ), and a high frequency of 13.56MHz was immediately oscillated (2 ~5 seconds) and then cooled at mold temperature for 2-3 seconds. After that, the press was opened and the embossed body was fed out by the pitch of the mold (the cycle during this time was about 10 seconds), and the embossing was performed intermittently, and the same process was repeated to obtain a three-dimensional patterned cloth material with an uneven pattern. . This three-dimensional patterned fabric material has an uneven pattern on the surface of the modacrylic fiber fabric with deep carvings similar to plastic and recessed areas that faithfully represent the minute patterns of molds, and has moderate cushioning and drapability. It is. In addition, if the repetition of the pattern engraved on the mold is devised and the seams are eliminated, a three-dimensional patterned cloth material having a long (endless) uneven pattern of a repeating pattern can be obtained.

Next, a mixture of polyvinyl acetate emulsion and polyurethane emulsion (weight ratio 1:1)
[Product name Hanitan 8994E, manufactured by Honey Kasei Kogyo Co., Ltd.]
was continuously coated using a reverse coater (dry weight: approximately 50 g/m ² ), then supplied to a drying oven and dried at 80°C. As a result, the gaps in the weave of the fabric were glued and sealed, the fluff of the threads disappeared, and the surface took on a mirror-like finish with the above-mentioned uneven pattern clearly retained. A surface treatment agent [trade name Hanitan 8603E, manufactured by Honey Kasei Kogyo Co., Ltd.] was coated to a dry weight of about 10 g/m ² . This surface treatment provided water resistance, and the surface feel and texture became similar to natural leather. Such three-dimensional patterned cloth material is
The unique appearance resulting from the cloth's weave and uneven pattern, combined with the sense of transparency between the resin coating layers on the surface, gives it a heavy shadow. Furthermore, such a structure has a relatively close modulus on both sides of the fabric.
Because of the Modulus resin layer, bones do not come out when folded, making it useful as a substitute for fashionable leather. Furthermore, if this fabric material is perforated to impart breathability, it is particularly useful for applications such as shoes and upholstery.

Example 2 Syndiotactic 1,2-polybutadiene [Product name JSR, RB-810, manufactured by Japan Synthetic Rubber Co., Ltd.] 100
of azodicarbonamide as a blowing agent.
A pellet containing 3.5 parts of P,P'-oxybisbenzenesulfonyl hydrazide and 0.5 parts of benzophenone as a photosensitizer was fed to an extruder to continuously extrude a sheet with a thickness of 0.45 m/m. Similar to 1, specific gravity with uniform and fine bubbles is approx.
0.14 and a thickness of 1.0 m/m (expansion ratio of about 6 times) endless and closed cell sheets were obtained. This foam was laminated with a fabric made of modacrylic fibers in the same manner as in Example 1, and the foam laminate was embossed in the same manner as in Example 1 to obtain a three-dimensional patterned cloth material. However, the high frequency application time is 4~
I made it a little longer at 7 seconds.

Thereafter, an aqueous pigment was added to the same anchor coat as in Example 1, and a reverse coater was used to apply the coating mainly to the concave surface to perform so-called valley cleaning. Next, in the same manner as in Example 1, a polyacrylic surface treatment agent containing an erasing agent was sprayed to obtain an embossed cloth with different colors on the concave and convex surfaces.

Example 3 About 20 g of anchor coat (dry weight) was sprayed onto the foam laminate (laminate of cloth and foam) of Example 2, and dried at 80°C. When this was similarly embossed in a predetermined pattern using a high-frequency press, the part that came into contact with the mold became smooth, and the filler and fluff of the fibers disappeared. Next, by spraying a urethane acrylic surface treatment agent as a top coat, a glossy three-dimensional patterned cloth material was obtained. Furthermore, if only the convex portions are colored using a gravure roll, a cloth material in which only the convex portions are colored differently can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a surface view showing an example of a three-dimensional patterned cloth material according to the present invention, Fig. 2 is a schematic cross-sectional view taken along line A-A in Fig. 1, and Fig. 3 is a form according to the present invention. Fig. 4 is a schematic partial cross-sectional view of the laminate, and Fig. 5 is a schematic partial cross-sectional view of the embossed pattern cloth material.
The figure is a schematic partial sectional view showing another example. 1...Three-dimensional pattern cloth material, 2...Fabric, 3...1,
2-PBD foam, 4...foam laminate, 5
... recessed part, 6 ... embossed pattern cloth material, 7,7'
...Anchor coat, 8...Reverse coater,
9... Laminating adhesive layer, 10... Lining.

Claims (1)

[Claims for Utility Model Registration] 1. As an anchor coat on the fabric side of a foam laminate consisting of a 1,2-polyptadiene resin alone or a polymer blend foam containing this as one component, and a woven or knitted fabric made of polyacrylic fibers. Before or after applying the urethane emulsion, an embossed pattern of any shape is created on the fabric surface using high-frequency dielectric heating.
A glossy three-dimensional patterned cloth material obtained by coating the anchor coat with transparent or translucent urethane or urethane-acrylic paint. 2. A glossy three-dimensional patterned fabric material according to claim 1, which is obtained by staining the fabric surface with an embossed pattern with valley staining or mountain staining with a urethane emulsion containing the application fee. 3. The three-dimensional patterned cloth material according to claim 1 or 2 of the utility model registration claim, which uses a paint containing an erasing agent and/or a transparent application fee.