JP4356948B2 - Method for producing laminate sheet with uneven texture and template used therefor - Google Patents

Description

  The present invention relates to a method for producing a laminate sheet and a template used for the method, and more particularly, to the production of a laminate sheet having an uneven texture.

The present applicant has proposed a method using a template 1 as shown in FIG. (See Patent Document 1)
The template 1 is obtained by bonding and laminating a sheet-like mold material 12 having a single-sided release property to both surfaces of a core paperboard 11 with an acrylic adhesive film, and between the two templates (1, 1). With the decorative sheet 14 sandwiched between two transparent resin plates 15, the sheet material 10 for lamination is inserted, and hot pressing is performed by a hot press device, and the sheet material 10 for lamination is laminated and integrated into one laminate sheet. A method for producing a laminated sheet is disclosed.

Refer to the claims and drawings of Japanese Patent Laid-Open No. 6-239903 (Patent No. 2558078)

  In this method for producing a laminated sheet, if a fine Japanese paper-like uneven pattern is provided in advance on the surface of the sheet-like mold material 12 arranged on the front and back surfaces of the template 1, the pattern is laminated sheet material 10 during hot pressing. A fine Japanese paper-like concavo-convex pattern is formed on the front and back surfaces of the obtained laminate sheet. Thus, according to this manufacturing method, in addition to the design imparted to the translucent decorative sheet 14 in the laminate sheet, a more varied design and decoration can be obtained by the Japanese paper-like uneven pattern on the laminate sheet surface. is there.

  However, as a laminating sheet material, a translucent decorative sheet provided with a concavo-convex pattern by engraving a bundle of single fibers previously obtained from plants as a translucent decorative sheet sandwiched between two transparent resin plates, In the case of producing a laminate sheet with a three-dimensional effect that emphasizes the concavo-convex pattern, there is a problem that the convex pattern is crushed and the three-dimensional effect is diminished, and the desired concavo-convex pattern cannot be obtained.

  In addition, since the uneven pattern of the translucent decorative sheet is transferred as a pattern having an uneven shape to the surface of the sheet-like mold material 12 disposed on the front and back surfaces of the template 1 during hot pressing, the template 1 is It was found that when a new lamination sheet material was used and hot-pressed, the reverse pattern of the projections and depressions was reflected as a shaded pattern on the new laminate sheet.

  The present invention has been made to solve the above-described problems, and a method for producing a laminate sheet with a textured texture that has a three-dimensional effect that emphasizes the textured pattern without producing an undesired shade pattern in design. And a template used therefor.

(Invention of manufacturing method)
The above problem is set between the upper and lower heating plates of the hot press device in a state where the sheet material for laminating the light-transmitting decorative sheet and the transparent resin plate is sandwiched between the sheet-shaped mold materials, hot pressing, In the method for manufacturing a laminate sheet in which the lamination sheet materials are laminated and integrated, a light-transmitting decorative sheet having a concavo-convex pattern provided in advance is used as the lamination sheet material, and a cushion is provided on the surface of the core plate disposed on the lower side. Arrange the sheet, and further arrange the cushion sheet on the back side of the core plate arranged on the upper side of the lower mold plate that is arranged on the surface, and further arrange the sheet-like mold material on the back side between the upper mold plate made, in a state of interposing the laminated sheet material, and hot-pressed, thereby forming the laminated sheet material to the laminated integrated single laminate sheet, the On the surface of the laminate sheet, the texture pattern of the surface of the sheet-shaped molding material to form a transcribed texture structure, further form a concave and convex pattern of the translucent decorative sheet in relief form, and its translucent The problem can be solved by the method for producing a laminate sheet having a texture of unevenness according to the present invention, wherein the unevenness pattern of the decorative sheet is eased from being transferred to the surface of the sheet-shaped mold material .

  In the invention relating to this production method, it is preferable to use a sheet-like Japanese paper, a fabric or a veneer as the translucent decorative sheet provided with the uneven pattern. As this sheet-like Japanese paper, a dispersed fiber pattern in which fibers obtained from plants, fibers made of synthetic resins such as acrylic fibers and rayon fibers, or inorganic fibers such as glass fibers are mixed, and the fibers have a number of convex shapes. Japanese paper to which is attached can be applied.

  In addition, as the plant, one or more kinds selected from cocoon, mitsumata, ganpi, hemp, cotton, bamboo, bamboo shoots, trees, kenaf, and leaves of plants A combination is used. Further, the sheet-like Japanese paper may be a Japanese paper that has been provided with a concavo-convex pattern in advance by causing unevenness in papermaking during papermaking.

  Furthermore, in the present invention, a woven fabric, a nonwoven fabric, or a knitted fabric can be specifically used as the sheet-like fabric. In addition, as the sheet-like veneer, a light-transmitting wood thin plate to which uneven texture is imparted naturally or artificially can be preferably used.

(Invention of template)
Further, the above problem is a template used as the lower and upper mold plates in the above-described laminate sheet manufacturing method, wherein cushion sheets are arranged on both front and back surfaces of the core plate, and sheet-shaped mold materials are further formed on both front and back surfaces. In the method for producing a laminate sheet according to the present invention, the sheet material for lamination, in which the translucent decorative sheet is sandwiched between the front and back surfaces by a transparent resin plate, is interposed between the template plates. It is also solved by the template used.

  In the invention of the template, it is preferable that the cushion sheet is arranged to be fixed to both the front and back surfaces of the core plate, and the sheet-like mold material is not fixed to both the front and back surfaces. Moreover, the said core board gives rigidity to a template, The board | plate material chosen from a thermosetting resin board, a paperboard, a glass cloth, and a glass nonwoven fabric is preferable.

  Further, the cushion sheet is capable of absorbing the convex portion of the translucent decorative sheet of the laminating sheet material during hot pressing, and is a sheet selected from felt, brushed fabric, pile fabric, synthetic or natural rubber, and silicon rubber. The material is preferable, and the sheet-shaped mold material has releasability with respect to the obtained laminate sheet, and is preferably selected from a synthetic resin film, an aluminum alloy sheet (including foil), and a paper sheet.

In the laminate sheet manufacturing method of the present invention and the template used therefor, a cushion sheet capable of absorbing the convex portion on the lamination sheet material side is disposed on the back surface of the sheet-like mold material sandwiching the lamination sheet material during hot pressing. Therefore, the crushing of the convex pattern on the translucent decorative sheet provided with the concavo-convex pattern is alleviated, and a three-dimensional effect can be expressed. Moreover, since the uneven pattern of the translucent decorative sheet is mitigated from being transferred to the surface of the sheet-like mold material 12 of the template 1 during hot pressing, the occurrence of an undesired shadow pattern as described above is prevented. The advantage that can also be obtained.
Therefore, the present invention has a very large practical value as a method for producing a laminate sheet having an uneven material feeling that has solved the conventional problems and a template used therefor.

Next, an embodiment relating to a method for producing a laminate sheet with a textured texture of the present invention and a template used for the method will be described with reference to FIG.
(Embodiment of template)
First, the form of the template will be described with reference to FIG.
The template 3 of the present invention is a template 3 that sandwiches a sheet material 2 for lamination to be processed into a laminate sheet from above and below when manufacturing a laminate sheet using a hot press as disclosed in the prior art. In particular, the translucent decorative sheet 21 provided with a concavo-convex pattern in advance is used for the laminating sheet material 2 and is suitable for forming the concavo-convex pattern of the translucent decorative sheet 21 in a relief shape on the laminate sheet. It is a template.

The template 3 of the present invention is first. Cushion sheets 32 and 32 are arranged on both front and back surfaces of the core plate 31 for imparting rigidity to the template 3 itself. The core plate 31 is made of a material that gives the mold plate 3 rigidity such that it can be easily handled. For example, the core plate 31 is selected from thermosetting resin plates such as bakelite, board materials such as paperboard, glass cloth, and glass nonwoven fabric. . More specifically, a paperboard of 500 g / m ^{2 or} a paperboard in which a plurality of kraft papers are laminated.

  The cushion sheet is made of a material that has the flexibility to absorb the convex portions of the concavo-convex pattern of the translucent decorative sheet 21 constituting the laminating sheet material 2 during hot pressing through the transparent resin plate 22. For example, a sheet material having an appropriate thickness selected from felt, raised fabric, pile fabric, synthetic or natural rubber, and silicon rubber is applied. More preferably, when a single-sided raised woven fabric with a single-sided nell substrate raised is used and the napped surface is bonded to the core plate 31 with the napped surface outside, the cushioning property is excellent, the handling is easy, and it is durable and long-lasting. There are advantages.

  Next, sheet-shaped mold materials 33 and 33 are arranged on both front and back surfaces of the cushion sheets 32 and 32. The sheet-shaped mold members 33 and 33 have releasability with respect to the obtained laminate sheet. For example, a synthetic resin film such as a polypropylene film, an aluminum alloy foil or sheet, and a paper sheet subjected to a release agent treatment These various materials can be arbitrarily selected. In particular, sheet-like silicone-coated paper, fluororesin-coated paper, and the like having a release property of 0.02-0.2 mm in thickness are suitable.

  In the pattern 3 having the above-described configuration of the present invention, the cushion sheets 32 and 32 are preferably fixed to the front and back surfaces of the core plate 31 with an adhesive layer or the like from the viewpoint of handling, but on the front and back surfaces of the cushion sheets 32 and 32. It is preferable that the sheet-shaped mold members 33 and 33 to be arranged do not adhere to the cushion sheets 32 and 32. This is because the adhesive layer reduces the function of the cushion sheets 32 and 32 in order to adhere. Therefore, it is acceptable in handling that the sheet-shaped mold members 33 and 33 are partially fixed where the cushioning property is not regarded as important, such as the four-round portions of the sheet-shaped mold members 33 and 33.

(Embodiment of manufacturing method)
The manufacturing method of the laminate sheet of the present invention is set between the upper and lower heating plates of the hot press apparatus in a state in which the sheet material for lamination sandwiched between the transparent resin plate from the front and back is further sandwiched between the sheet-shaped mold materials, It is the same as that previously proposed by the present applicant in that the sheet material for lamination is laminated and integrated by hot pressing. In addition to the double-sided laminate type, the laminating sheet material includes a single-sided laminate type in which a light-transmitting decorative sheet and a transparent resin plate are superposed one by one.

In the present invention, there is a first feature in that a translucent decorative sheet 21 provided with a concavo-convex pattern in advance is used for the laminating sheet material 2, and in the case of FIG. 1, a transparent resin plate such as a PVC film is provided on both sides thereof. 22 and 22 are arranged.
Next, a cushion sheet 32 is disposed on the surface of the core plate 31 disposed on the lower side, and a lower mold plate 3a in which a sheet-shaped mold material 33 is disposed on the surface, and the core plate 31 disposed on the upper side. There is a second feature in that a cushion sheet 32 is disposed on the back surface of the sheet, and an upper mold plate 3b having a sheet-shaped mold material 33 disposed on the back surface thereof.

  In the present invention, hot pressing is performed with the laminating sheet material 2 interposed between the mold plates 3a and 3b. In this case, the five-layer structure described in the embodiment of the previous template is used. Needless to say, the template can be used. Further, in the present invention, a plurality of combinations of a template + a sheet material for lamination, such as a template + a sheet material for lamination + a template + a sheet material for lamination + a template, are set in a single hot press. It can also be configured to produce a laminate sheet.

  In the present invention, as described above, as a constituent material of the laminating sheet material 2, a transparent resin plate 22 such as a PVC film is used in combination with the translucent decorative sheet 21 that has been provided with an uneven pattern in advance. As the translucent decorative sheet 21, a sheet-like Japanese paper is suitable, but other materials described below can also be used.

  The most preferable material for the translucent decorative sheet 21 is a sheet-like Japanese paper, such as cocoon, mitsumata, ganpi, hemp, cotton, bamboo, cocoon, and tree (bark). A bundle of fibers obtained from single or combined plants such as kenaf and leaves of plants, etc., and mixed with the main fibers constituting the Japanese paper, and a dispersion having a number of convex shapes by the bundle of fibers. Japanese paper with a fiber pattern is preferred. Furthermore, as a fibrous material, it is also possible to use a fiber made of a synthetic resin such as an acrylic fiber or a rayon fiber, or an inorganic fiber such as a glass fiber in addition to the plant material.

  In addition, as the sheet-shaped Japanese paper, plants such as leaves, pressed flowers, and pressed leaves may be rubbed. Or the Japanese paper which gave the uneven | corrugated pattern previously by producing the unevenness of a papermaking intentionally at the time of papermaking instead of mixing the fiber which becomes the above convex shape may be sufficient.

  Furthermore, in the present invention, as the light-transmitting decorative sheet 21, a sheet-like fabric such as a woven fabric, a non-woven fabric, or a knitted fabric can be used. It is also possible to use a sheet-like veneer such as a light-transmitting thin plate having a thickness of 0.1 to 0.5 mm, or an uneven thin piece such as a decorative piece obtained by processing flowers and leaves into a flat shape.

  In the method for producing a laminate sheet of the present invention, the laminate sheet material 2 is interposed between the template plates 3 and hot-pressed at an appropriate temperature and pressure, so that the translucent decorative sheet 21 and the transparent sheet 21 are transparent. The resin plates 22 and 22 are laminated and integrated to form a laminated sheet having a thickness of 0.2 to 2.0 mm. At the same time, the surface of the laminated sheet 33, 33 has a texture pattern on the surface of the laminated sheet. The texture structure of the Japanese paper-like texture structure based on the above can be transferred and formed, and the uneven pattern of the translucent decorative sheet 21 can be formed in a relief shape having a convex portion having a height of 10 μm or more on the laminate sheet surface.

  Thus, according to the method for producing a laminate sheet having a texture of unevenness according to the present invention and the template used therefor, the convex pattern of the translucent decorative sheet 21 provided with the uneven pattern is crushed by arranging the cushion sheet. Is mitigated, and a three-dimensional feeling can be expressed, and the uneven pattern of the translucent decorative sheet 21 is mitigated from being transferred to the surface of the sheet-shaped mold material 12, thereby preventing the occurrence of a shading pattern that is disliked in design. It is possible to produce a laminate sheet with an uneven texture.

The expansion | deployment perspective view which shows the combination of the partially cut-out template and the sheet material for lamination | stacking in this invention. The expansion | deployment perspective view which shows the combination of the partially cut-out template and the sheet material for lamination | stacking in a prior art.

Explanation of symbols

2: Sheet material for lamination, 21: Translucent decorative sheet, 22: Transparent resin plate 3: Mold plate, 31: Core plate, 32: Cushion sheet, 33: Sheet-shaped mold material

Claims (12)

Between the upper and lower heating plates of a hot press apparatus, set the sheet material for laminating a transparent decorative sheet and a transparent resin plate sandwiched between sheet-shaped mold materials, hot press, and In the method for producing a laminate sheet that is laminated and integrated, the laminate sheet material uses a light-transmitting decorative sheet that has been provided with a concavo-convex pattern in advance, and a cushion sheet is disposed on the surface of the core plate disposed on the lower side, Furthermore, a lower mold plate in which a sheet-shaped mold material is arranged on the surface, an upper mold plate in which a cushion sheet is arranged on the back surface of the core plate arranged on the upper side, and a sheet-shaped mold material is arranged on the back surface; during a state in which interposed the laminated sheet material, and hot-pressed, thereby forming the laminated sheet material to the laminated integrated single laminate sheet, at the same time the lamination On the surface of the Toshito to form a texture structure transferring the texture pattern of the surface of the sheet-type material, further forming an uneven pattern of the translucent decorative sheet in relief form, and its translucent decorative sheet A method for producing a laminate sheet having a texture of uneven material, wherein the uneven pattern is alleviated from being transferred to the surface of the sheet-shaped mold material .   The method for producing a laminate sheet with a texture of unevenness according to claim 1, wherein the translucent decorative sheet provided with the uneven pattern is a sheet-like Japanese paper, fabric or veneer.   The sheet-like Japanese paper is mixed with fibers obtained from plants, fibers made of synthetic resins such as acrylic fibers and rayon fibers, or inorganic fibers such as glass fibers, and the fibers have a dispersed fiber pattern having a number of convex shapes. The method for producing a laminate sheet having a textured texture according to claim 2, wherein the method is applied Japanese paper.   The plant is one or more selected from the group consisting of cocoon, mitsumata, ganpi, hemp, cotton, bamboo, cocoon, tree, kenaf, and plant leaf. 3. A method for producing a laminate sheet having an uneven texture according to 3.   5. The method for producing a laminate sheet having a texture of unevenness according to claim 2, 3 or 4, wherein the sheet-like Japanese paper is intended to cause unevenness in papermaking and to give an uneven pattern in advance.   The method for producing a laminate sheet having a textured texture according to claim 2, wherein the sheet-like fabric is a woven fabric, a nonwoven fabric, or a knitted fabric.   The method for producing a laminate sheet with a texture of unevenness according to claim 2, wherein the sheet-like veneer is a light-transmitting wood thin plate with natural or artificially provided uneven grain.   It is a template used as the lower side and the upper side template in the method for producing a laminate sheet according to any one of claims 1 to 7, wherein cushion sheets are arranged on both the front and back surfaces of the core plate, and the sheets are further provided on both the front and back surfaces. A laminated sheet material is arranged, and a laminate sheet material in which the translucent decorative sheet is sandwiched between front and back surfaces by a transparent resin plate is disposed between the mold plates. Template.   The template used for the manufacturing method of the laminate sheet of Claim 8 arrange | positioned without adhering the sheet-like mold material to the front and back both surfaces, and the cushion sheet being arrange | positioned adhering to both front and back surfaces of a core board.   The method for producing a laminate sheet according to claim 8 or 9, wherein the core plate is a plate material selected from a thermosetting resin plate, paperboard, glass cloth, and glass nonwoven fabric, and imparts rigidity to the template. Template used.   The cushion sheet is a sheet material selected from felt, brushed woven fabric, pile fabric, synthetic or natural rubber, and silicon rubber, and can absorb convex portions of the sheet material for lamination during hot pressing. The template used for the manufacturing method of the laminate sheet in any one of.   The sheet-like mold material is a sheet material selected from a synthetic resin film, an aluminum alloy sheet, and a paper sheet, and has releasability with respect to the obtained laminate sheet. A template used in a method for producing a laminate sheet.

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