JP6235062B2 - Method for producing lapping decorative board - Google Patents

Description

    The present invention relates to a method for manufacturing a wrapping decorative board in which the surface of a plate-like base material used for a flooring or wall material of a building is wrapped with a sheet, and particularly relates to a technique for preventing peeling of the sheet. is there.

    Conventionally, as this type of wrapping decorative board, for example, as shown in Patent Documents 1 and 2, a sheet having a size that protrudes from the surface of the base material, and the surface of the base material and the surrounding side surface are integrally wrapped. is there. In these wrapping decorative boards, the surface of the base material is bonded to the surface of the base material and the peripheral side surface while bending the sheet, and the surplus portions protruding from the side surface of the base material are cut off at the four corners of the base material. The surrounding side is integrally wrapped with a sheet.

Japanese Patent Laying-Open No. 2015-20305 Japanese Patent Laying-Open No. 2015-20306

    However, the above method for producing a wrapping decorative board has a limit in making it look like a solid material because the cut marks of the sheet remain at each corner of the base material. Moreover, in the manufacturing method of the said wrapping decorative board, since there exists a possibility that a clearance gap may be made in an excision part and a base material may be exposed, in order to prevent the designability fall of a finished product (wrapping decorative board), an excess part of It was necessary to increase the accuracy of excision and it was not easy.

    This invention is made | formed in view of this point, The objective is to provide the manufacturing method for manufacturing easily the wrapping decorative board excellent in the designability.

    In order to achieve the above object, in the present invention, a sheet larger than the surface of the base material is bonded to the surface of the base material and the peripheral side surface, and the base is formed at the peripheral portion of the sheet at each corner portion of the base material. The surplus part of the sheet was processed by heat-sealing the surplus part that protruded from the side surface of the material in a state of being folded on the side surface adhesive part provided on the side surface of the base material at the peripheral part of the sheet. .

    Specifically, the first invention presupposes a method for producing a wrapping decorative board comprising a plate-like base material and a decorative sheet layer comprising a sheet bonded and integrated on the surface and peripheral side surfaces of the base material. It is said.

And the manufacturing method of the lapping decorative board which concerns on 1st invention WHEREIN: The said sheet | seat larger than the surface of the said base material is bend | folded so that a peripheral part may be located in the surrounding side surface of the said base material, and the surface of the said base material a sheet bonding step of bonding to the surrounding side face, in the sheet bonding step, each corner of the substrate the excess portion protruding from the side surface of the substrate at each corner of the substrate to a peripheral portion of the sheet folded in parts, the bending step Ru folded over side bonding portion provided on a side surface of the substrate a peripheral portion of the sheet, by the excess portion heats the overlapping portion overlapping the side bonding portions And a surplus part processing step having a heat-sealing step of heat-sealing to the side surface adhesive portion without cutting the surplus portion.

2nd invention is a manufacturing method of the wrapping decorative board provided with the plate-shaped base material and the decorative sheet layer which consists of a sheet | seat bonded and integrated on the surface and surrounding side surface of this base material, Comprising: In the sheet adhering step, the sheet larger than the surface of the sheet is bent so that the peripheral edge portion is located on the peripheral side surface of the base material and bonded to the surface of the base material and the peripheral side surface. The surplus portion that protrudes from the side surface of the base material at each corner of the base material is folded on the side surface adhesive portion that is the peripheral edge portion of the sheet and provided on the side surface of the base material, Prior to the heat-sealing surplus part treatment step and the sheet adhering step, a part of the side surface of the base material is cut out, and the surplus portion overlaps the side surface adhering portion on the side surface of the base material Notch that forms a receiving recess for receiving The surplus part processing step includes a bending step of folding the surplus part and overlapping the side surface adhesive part, and the surplus part overlapping the side surface adhesive part while pushing the overlapping part into the accommodating recess. And a heat sealing step of heat-sealing the portion to the side surface bonding portion.

3rd invention is a manufacturing method of the wrapping decorative board provided with the plate-shaped base material, and the decorative sheet layer which consists of a sheet | seat bonded and integrated on the surface and surrounding side surface of this base material, Comprising: The said base material In the sheet adhering step, the sheet larger than the surface of the sheet is bent so that the peripheral edge portion is located on the peripheral side surface of the base material and bonded to the surface of the base material and the peripheral side surface. The surplus portion that protrudes from the side surface of the base material at each corner of the base material is folded on the side surface adhesive portion that is the peripheral edge portion of the sheet and provided on the side surface of the base material, Prior to the heat-sealing surplus part processing step and the sheet adhering step, a portion where one side pair of the substrate facing each other is cut out and the peripheral portion of the sheet on each side surface is bonded Is the outer edge of the surface of the substrate. And a notch process for processing so as to be a receding surface located inside the base material, wherein the surplus part processing step bends the surplus part and the receding of the base material in the side surface adhesive portion. A folding step of overlapping the receding surface bonding portion provided on the surface, and a heat sealing step of thermally fusing the surplus portion to the receding surface bonding portion.

In the first to third inventions, a sheet larger than the surface of the base material is folded and bonded to the surface of the base material and the peripheral side surface, and then the peripheral edge of the sheet at each corner of the base material. The surplus portion that protruded from the side surface was folded to a side surface adhesive portion provided on the side surface of the base material at the peripheral edge portion of the sheet to be heat-sealed. Therefore, it is not necessary to cut off the surplus portion as in the conventional manufacturing method. Therefore, according to the above manufacturing method, it is only necessary to bend the surplus portion and heat-seal it by overlapping the side surface adhesive portion without cutting the surplus portion, and as in the conventional manufacturing method of cutting off the surplus portion. Since the finish is not greatly affected by the processing accuracy, a lapping decorative board excellent in design and workability can be easily formed. Furthermore, since it was decided to fix the surplus portion to the side adhesive portion by heat fusion without using an adhesive or the like, a wrapping decorative board having excellent design properties can be obtained more easily than when using an adhesive. Can be manufactured .

In time and, in the configuration in which thermal fusion folded over side bonding portion without ablating the surplus portion of the sheet as described above, overlapped portions excess portion in the decorative sheet layer overlaps the side bonding portion than other portions Also thicken. In this way, when a part of the decorative sheet layer is formed thickly, when a plurality of wrapping decorative plates are arranged side by side and used as a flooring or wall material, a gap is formed between the wrapping decorative plates, so that the joint becomes large and the design There is a risk of reducing the performance.

In the second invention, without overlapping the peripheral portion of the sheet, after folding and overlapping the side surface adhesive portion, the overlapping portion of the decorative sheet layer in which the excessive portion overlaps the side surface adhesive portion, The excess portion was heat-sealed to the side surface bonding portion while being pushed into the housing recess formed on the side surface of the substrate. By such a manufacturing method, the overlapping part of the decorative sheet layer that is thicker than the other part does not protrude to the outside of the side surface of the base material and does not cause a step, so that the other part fits into the other part. Therefore, a wrapping decorative board excellent in design and workability can be manufactured. In addition, since the protrusion of the overlapping portion of the decorative sheet layer to the outside of the base material is suppressed, a lapping decorative board that does not cause construction defects such as misalignment is easily produced when a plurality of decorative sheet layers are used as a flooring material or a wall material. You can also .

In the third aspect of the invention, the part to which the peripheral edge of the sheet of the pair of side surfaces facing each other on the base material is bonded to the receding surface located inside the base material from the outer edge of the base material surface. In the surplus portion processing step, the surplus portion of the sheet is folded and heat-sealed on a receding surface bonding portion provided on the receding surface of the base material at the peripheral portion of the sheet. By such a manufacturing method, the overlapping part of the decorative sheet layer that is thicker than the other part by the excess part of the sheet can be accommodated in the groove formed on the side surface of the base material by the receding surface. The protrusion of the overlapping portion of the sheet layer to the outside of the base material is suppressed. Therefore, when a plurality of the decorative sheets are used as a flooring or a wall material, gaps are not formed between the decorative wrapping boards and the joints are not enlarged, and a wrapping decorative board having excellent design can be easily manufactured. In addition, since the protrusion of the overlapping portion of the decorative sheet layer to the outside of the base material is suppressed, a lapping decorative board that does not cause construction defects such as misalignment is easily produced when a plurality of decorative sheet layers are used as a flooring material or a wall material. You can also.

    According to the present invention, a sheet larger than the surface of the base material is bonded to the surface of the base material and the peripheral side surface, and the surplus that protrudes from the side surface of the base material at each corner of the base material at the peripheral portion of the sheet Processing accuracy to cut off the surplus part by processing the surplus part of the sheet by heat-sealing in a state where the part is folded to the side adhesive part provided on the side surface of the base material at the peripheral edge of the sheet Therefore, it is possible to manufacture a wrapping decorative board excellent in design that does not cause a wrapping failure such as exposure of the base material due to low exposure. Moreover, since it is not necessary to excise an excess part accurately when forming a decorative sheet layer, the lapping decorative board excellent in the design property can be manufactured easily.

FIG. 1 is a perspective view of a wrapping decorative board according to Embodiment 1 of the present invention. FIG. 2 is a plan view of the wrapping decorative board according to the first embodiment of the present invention. FIG. 3 is a view taken in the direction of the line III-III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is an enlarged perspective view showing the vicinity of the accommodation recess at the corner of the substrate. 6 is a perspective view showing a state after the decorative sheet layer is formed on the base material of FIG. 5 in an enlarged manner from the same angle as FIG. 7 (a) and 7 (b) are explanatory views of a first sheet adhering step for adhering the sheet to the surface of the base material in the method for manufacturing a wrapping decorative board, FIG. 7 (a) is a plan view, FIG. (B) is a side view. 8 (a) and 8 (b) are explanatory views of a second sheet adhering step for adhering the sheet to the long side surface of the substrate in the method for manufacturing a wrapping decorative board, FIG. 8 (a) is a plan view, FIG. 8B is a side view. 9 (a) and 9 (b) are explanatory views of a third sheet adhering step for adhering the sheet to the short side surface of the base material in the method for manufacturing a wrapping decorative board, FIG. 9 (a) is a plan view, FIG. 9B is a side view. 10 (a) and 10 (b) are explanatory views of a bending step in the method for manufacturing a lapping decorative board, FIG. 10 (a) is a plan view, and FIG. 10 (b) is a side view. 11 (a) and 11 (b) are explanatory views of the bonding process in the method for manufacturing a lapping decorative board, FIG. 11 (a) is a plan view, and FIG. 11 (b) is a side view. FIG. 12 is a perspective view of a wrapping decorative board according to Embodiment 2 of the present invention. FIG. 13 is a plan view of a wrapping decorative board according to Embodiment 2 of the present invention. FIG. 14 is an arrow view in the direction of line III-III in FIG. 15 is a cross-sectional view taken along line IV-IV in FIG. FIG. 16 is an enlarged perspective view showing the vicinity of the receding surface of the side surface of the substrate. 17 is a perspective view showing a state after the decorative sheet layer is formed on the base material of FIG. 16 in an enlarged manner from the same angle as FIG. 18 (a) and 18 (b) are explanatory views of a first sheet adhering step for adhering the sheet to the surface of the base material in the method for manufacturing a lapping decorative board, FIG. 18 (a) is a plan view, FIG. (B) is a side view. 19 (a) and 19 (b) are explanatory views of a second sheet adhering step for adhering the sheet to the long side surface of the substrate in the method for manufacturing a wrapping decorative board, FIG. 19 (a) is a plan view, FIG. 19B is a side view. 20 (a) and 20 (b) are explanatory views of a third sheet adhering step for adhering the sheet to the short side surface of the substrate in the method for manufacturing a wrapping decorative board, FIG. 20 (a) is a plan view, FIG. 20B is a side view. 21 (a) and 21 (b) are explanatory views of a bending and bonding step in the method for manufacturing a lapping decorative board, FIG. 21 (a) is a plan view, and FIG. 21 (b) is a side view.

    Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are merely preferred examples in nature, and are not intended to limit the scope of the present invention, its application, or its use.

Embodiment 1 of the Invention
1 and 2 show a wrapping decorative board 1 according to Embodiment 1 of the present invention. This wrapping decorative board 1 is used as a flooring or the like, for example.

−Configuration−
The wrapping decorative board 1 includes a rectangular plate-like base material 10 and a decorative sheet layer 20 composed of a sheet 21 bonded and integrated to the base material 10 with an adhesive.

<Structure of base material>
As shown in FIG. 3, the base material 10 is configured by laminating a medium density fiberboard (MDF) or the like on a plywood. In addition, the base material 10 is not limited to such a configuration, for example, other wooden materials such as particle board and hard board, and inorganic plate materials such as a product name “Dailite” manufactured by Daiken Kogyo Co., Ltd. A plate-like material used as a building material may be used. The base material 10 is formed in, for example, a rectangular shape having a thickness of 15 mm, a width of 303 mm, and a length of 1818 mm.

[Female and male seeds]
A female fruit 4 or a male fruit 5 is formed on each side of the peripheral side surfaces 10b, 10b, 10c, and 10c of the substrate 10. Specifically, a female fruit 4 is formed on one of the long side surfaces 10b, 10b facing the width direction of the base material 10, and a male fruit 5 that can be fitted to the female fruit 4 is formed on the other side. Yes. In addition, a female fruit 4 is formed on one of the short side surfaces 10c, 10c facing the length direction of the base material 10, and a male fruit 5 that can be fitted to the female fruit 4 is formed on the other side. By fitting the male fruit 5 of the long side surface 10b, 10b of the base material 10 of the adjacent wrapping decorative plate 1 to the female fruit 4 of the long side surface 10b, 10b, both the wrapping decorative plates 1 are arranged and installed. The both wrapping decorative boards 1 are arranged by fitting the male berries 5 of the short side faces 10c, 10c of the base material 10 of the adjacent wrapping decorative board 1 to the female berries 4 of the short side faces 10c, 10c. It is configured to be installed.

    The female berries 4 and 4 of the long side surface 10b and the short side surface 10c are configured in the same structure. The female berries 4 and 4 have a female dent recess 4a, a front-side female ridge 4b, and a back-side female ridge 4c, respectively. The female real concave portion 4a is formed by cutting out the middle portions in the front and back directions, which are the thickness directions of the long side surface 10b and the short side surface 10c of the base material 10, into concave grooves. The front side female real convex part 4b and the back side female real convex part 4c are the remaining parts which cut out the female real recessed part 4a of the base material 10, Comprising: The front side female real convex part 4b is located in the front side of the female real recessed part 4a. It is a part and the back side real female convex part 4c is a part located in the back side of the female real recessed part 4a. In addition, in this embodiment, the front side female real convex part 4b is the female real concave part of the base material 10 so that the protruding length of the back side female real convex part 4c is longer than the protruding length of the front side female real convex part 4b. The front side portion of 4a is formed by cutting out into a groove shape shallower than the female recess 4a.

    The males 5 and 5 of the long side surface 10b and the short side surface 10c have the same structure. The males 5 and 5 each have a male convex part 5a, a front male concave part 5b, and a back male concave part 5c. The male convex part 5a, the front male concave part 5b, and the rear male concave part 5c are formed so that the intermediate part in the front and back direction of the long side surface 10b and the short side surface 10c of the base material 10 is a ridge. It is formed by notching the front side and the back side. In the present embodiment, the back male recess 5c is formed by cutting out into a groove shape deeper than the front male recess 5b.

    Thus, in this embodiment, what is called actual processing which forms the female fruit 4 and the male fruit 5 is given to the base material 10 so that the end surface of the adjacent lapping decorative board 1 may fit. However, the structure which fits the end surface of the adjacent wrapping decorative board 1 is not restricted to this. For example, one of the short side surfaces 10c and 10c of the base material 10 is cut out on the front side portion in the thickness direction of the base material 10, and the other is subjected to a so-called concluding process in which the back side portion in the thickness direction of the base material 10 is cut out. Also good. Further, the actual processing is not limited to the above-described one, and the protruding lengths of the front female real convex portion 4b and the back female real convex portion 4c are equal, and the depths of the front male concave portion 5b and the back male male concave portion 5c are equal. It may be a thing.

[Chamfer]
As shown in FIGS. 3 and 4, the surface 10 a of the base material 10 constitutes a decorative surface of the wrapping decorative board 1. At the corners of the surface 10a of the substrate 10 and the long side surfaces 10b and 10b and the short side surfaces 10c and 10c, the corners are notched obliquely (or arcuately), and the bases become more outward. A chamfered portion 2 located on the back side of the material 10 is formed.

    As shown in FIGS. 5 and 6, on the short side surfaces 10 c and 10 c of the base material 10, an accommodation recess 30 for accommodating overlapping portions 20 d,. . Details of the accommodation recess 30 will be described later.

<Composition of decorative sheet layer>
The decorative sheet layer 20 is formed of a sheet 21 that integrally covers the surface 10a, the long side surfaces 10b and 10b, and the short side surfaces 10c and 10c of the base material 10, and is bonded with an adhesive. As the adhesive, for example, a moisture-curable urethane resin hot melt adhesive (PUR hot melt adhesive) is used. In this way, by using the moisture-curable urethane resin hot melt adhesive, the base material 10 can be easily wrapped with the sheet 21 and the sheet 21 can be bonded. It is also possible to use an adhesive other than the moisture curable urethane resin hot melt adhesive.

    The sheet 21 is made of, for example, a resin sheet such as polyvinyl chloride or polyolefin, and has a thickness of about 0.1 to 0.4 mm. The sheet 21 is formed in a rectangular shape that is larger than the surface 10 a of the base material 10. In addition to the above, the sheet 21 may be a thin sheet material such as a resin sheet such as polyethylene terephthalate, decorative paper such as coated paper or resin-impregnated paper, non-woven fabric, woven fabric, wood thin veneer, and tatami mat. it can. The thickness of the sheet 21 may be determined in consideration of the wrapping equipment, for example, about 0.05 to 0.3 mm for paper, and about 0.15 to 0.30 mm for a thin wood veneer. Are preferably used.

    As shown in FIGS. 3 and 4, the decorative sheet layer 20 made of the sheet 21 is attached to the surface portion 20 a attached to the surface 10 a of the base material 10 and the long side surfaces 10 b and 10 b of the base material 10. Two long side surface portions 20b, 20b, and two short side surface portions 20c, 20c attached to the short side surfaces 10c, 10c of the substrate 10, respectively.

    The surface portion 20a is constituted by a main body portion 22 of a sheet 21 adhered to the surface 10a of the substrate 10 with an adhesive.

    The two long side surface portions 20b and 20b are constituted by long side surface adhesive portions 23a and 23a which are the peripheral edge portion 23 of the sheet 21 and are bonded to the long side side surfaces 10b and 10b of the base material 10 with an adhesive. .

    Of the two long side surface bonding portions 23a, 23a of the sheet 21, the long side surface bonding portion 23a located on the long side surface 10b on which the female fruit 4 is formed is a female fruit that is a part of the long side surface 10b. 4 is bonded to the protruding front end surface of the front female convex portion 4b, so that the front end of the base 10 does not reach the female concave portion 4a. It extends to the vicinity of the actual recess 4a.

    On the other hand, of the two long side surface adhesive portions 23a, 23a of the sheet 21, the long side surface adhesive portion 23a located on the long side surface 10b where the male 5 is formed is a part of the long side surface 10b. The male convex part is bonded to the bottom surface of the front male concave part 5b of the male fruit 5 so that the tip on the back side does not reach the male convex part 5a in the front and back direction of the base material 10. It extends to the vicinity of 5a.

    The two short side surface portions 20c and 20c are the peripheral edge portion 23 of the sheet 21, and the short side surface adhesive portions 23b and 23b bonded to the short side surface 10c and 10c of the base material 10 with an adhesive, as well as the sheet 21. , 23c protruding from the base material 10 when the sheet 21 is bonded.

    Of the two short side surface adhesive portions 23b, 23b of the sheet 21, the short side surface adhesive portion 23b located on the short side surface 10c on which the female seed 4 is formed is a part of the short side surface 10c of the substrate 10. The front female protrusion 4b protrudes so that the front end of the base 10 does not reach the female recess 4a in the front and back direction of the base material 10. It extends to the vicinity of the female real recess 4a on the front end surface.

    On the other hand, of the two short side surface adhesive portions 23b and 23b of the sheet 21, the short side surface adhesive portion 23b located on the short side surface 10c on which the male 5 is formed is formed on the short side surface 10c of the base material 10. It adheres to the bottom surface of the front male concave portion 5b of the male male 5 which is a part, and the bottom of the front male concave portion 5b does not reach the male convex portion 5a in the front-back direction of the base material 10. It extends to the vicinity of the male convex part 5a.

    Further, at each corner of the base material 10 without being bonded to the base material 10 of the sheet 21, the excess portions 23c,..., 23c protruding from the long side surface 10b and the short side surface 10c are short side surface adhesive portions 23b. , 23b and is heat-sealed in that state. Although details will be described later, the overlapping portion 20d of the decorative sheet layer 20 where the surplus portions 23c,..., 23c overlap the short side surface adhesive portions 23b, 23b is the short side surfaces 10c, 10c of the base material 10 described later. Is housed by being pushed into the housing recess 30 formed in the housing.

    With such a configuration, the surface 10a and the side surfaces 10b and 10c of the base material 10 are covered with the sheet 21, and the decorative sheet layer 20 is formed on the surface 10a and the side surfaces 10b and 10c of the base material 10.

[Receiving recess]
As shown in FIG.5 and FIG.6, the accommodation recessed part 30 which accommodates the duplication parts 20d, ..., 20d of the decorative sheet layer 20 mentioned above is formed in the short side surface 10c, 10c of the base material 10. As shown in FIG. The accommodating recess 30 is formed at both ends in the longitudinal direction of the two short side surfaces 10c. Specifically, the accommodating recess 30 is formed at both ends in the longitudinal direction of the protruding front end surface of the front-side female convex portion 4b, which is a part of the short-side side surface 10c, on the short-side side surface 10c where the female seed 4 is formed. The short side surface 10c formed with the male fruit 5 is formed at both ends in the longitudinal direction of the bottom surface of the front male concave part 5b which is a part of the short side surface 10c.

    Each accommodation recess 30 has a triangular shape corresponding to the thickness of the surplus portion 23c of the sheet 21 at both ends in the longitudinal direction of the protruding front end surface of the front female projection 4b or both ends in the longitudinal direction of the bottom surface of the front male recess 5b. It is comprised by the ditch | groove formed by notching. Each accommodating recess 30 is formed in a shape corresponding to the overlapping portion 20d of the decorative sheet layer 20, specifically, a triangle shape larger than the overlapping portion 20d so as to be accommodated when the overlapping portion 20d is pushed. Yes. By pushing the overlapping portion 20d into each receiving recess 30 formed in this way and storing it, the overlapping portion 20d of the decorative sheet layer 20 may protrude to the outside of the side surfaces 10b and 10c of the base material 10 rather than the other portions. Not familiar with other parts.

-Manufacturing method-
Hereinafter, the manufacturing method of the lapping decorative board 1 which concerns on Embodiment 1 of this invention is demonstrated based on FIGS. The manufacturing method of the wrapping decorative board 1 includes a notch processing step of the base material 10, a wrapping step of the sheet 21 on the base material 10, and a surplus partial processing step. In addition, the order of the process demonstrated below is only an example, and the manufacturing method which concerns on this invention is not restricted to this.
(1) Notch processing step of substrate 10 First, the substrate 10 is notched. The notch processing of the base material 10 includes actual processing, chamfering processing, and concave groove processing. The actual machining process and the chamfering process may be performed simultaneously or sequentially. The concave groove processing step is performed after the actual processing step.

[Actual machining process]
In the actual processing step, the long side surfaces 10b and 10b and the short side surfaces 10c and 10c of the base material 10 are cut out, and the long side surfaces 10b and 10b and the short side surfaces 10c and 10c are filled with the female seed 4 and the male seed 5, respectively. Each is processed.

[Chamfering process]
In the chamfering process, the corners of the surface 10a of the substrate 10 and the long side surfaces 10b and 10b and the short side surfaces 10c and 10c are cut obliquely (or in an arc shape), and the substrate 10 is directed toward the outside. The chamfered portion 2 located on the back side is formed.

[Ditching process]
In the concave groove processing step, the receiving concave portion 30 that accommodates the overlapping portion 20d is formed by cutting out both ends in the longitudinal direction of the short side surfaces 10c, 10c of the substrate 10 into a triangular concave groove shape.
(2) Lapping process to the base material 10 Next, the sheet 21 is subjected to lapping processing on the surface 10a, the long side surfaces 10b and 10b, and the short side surfaces 10c and 10c of the base material 10, and the decorative sheet layer is applied to the base material 10. 20 is formed. The lapping process includes an adhesive application process and first to third sheet bonding processes.

[Adhesive application process]
In the adhesive application step, an adhesive (moisture curable urethane resin hot melt adhesive) is applied to the back surface of the sheet 21. Note that the adhesive may be applied to the front surface 10a, the long side surfaces 10b and 10b, and the short side surfaces 10c and 10c of the base material 10, instead of being applied to the back surface of the sheet 21.

    For example, the sheet 21 is wound around a roll or the like, and is continuously fed out from the roll and supplied. The sheet 21 corresponds to the width of the base material 10 when the width of the sheet 21 is previously wrapped. The reference width may be set to be larger than the reference width. Specifically, the reference width of the sheet 21 is lapped by aligning the width direction of the sheet 21 to the base material 10 and bonding the sheet 21 to the long side surfaces 10b and 10b of the base material 10 in the second sheet bonding process described later. The ends of the long side surface adhesive portions 23a, 23a of the sheet 21 thus formed (the back side ends in the front and back direction of the base material 10) are formed on the female real concave portion 4a and the male real convex portion 5a of the long side side surfaces 10b, 10b. The width does not reach. FIG. 7A shows a sheet 21 having a reference width.

[First sheet bonding step]
As shown in FIGS. 7A and 7B, in the first sheet bonding step, the sheet 21 is pressed against the surface 10a of the base material 10, and the adhesive is solidified and bonded. At this time, the sheet 21 and the base material 10 are accurately aligned in the width direction and bonded. By such an operation, the main body portion 22 of the sheet 21 is bonded onto the surface 10 a of the base material 10. In the present embodiment, the surface portion 20 a of the decorative sheet layer 20 is configured by the main body portion 22 of the sheet 21.

[Second sheet bonding step]
As shown in FIGS. 8A and 8B, in the second sheet adhering step, the peripheral portion of the sheet 21 adhered to the surface 10a of the substrate 10 and both ends in the width direction are bent to form the substrate. The two long side surfaces 10b and 10b are bonded with an adhesive.

    Specifically, by using a heated bending jig, both end portions in the width direction of the sheet 21 are formed on the protruding front end surface of the front female protrusion 4b and the front male recess 5b on the long side surface 10b of the substrate 10. A hot press operation is performed by pressing the bottom surface and reactivating (remelting) the adhesive on the back surface of the sheet 21. Thereafter, the heating of the bending jig is stopped, and the both ends in the width direction of the sheet 21 are placed in the unheated bending jig, and the protruding front end surface of the front side female convex part 4b of the long side surface 10b of the substrate 10 and A cold press operation is performed in which the adhesive is pressed against the bottom surface of the front male recess 5b and solidified by cooling the reactivated adhesive.

    By the above hot press operation and cold press operation, the length of the peripheral edge portion 23 of the sheet 21 on the protruding front end surface of the front side female real convex portion 4b and the bottom surface of the front side male real concave portion 5b of the long side surface 10b of the substrate 10 is increased. The side surface bonding portions 23a and 23a are bonded. In the present embodiment, the two long side surface portions 20 b and 20 b of the decorative sheet layer 20 are configured by the two long side surface adhesive portions 23 a and 23 a of the sheet 21.

[Third sheet bonding step]
As shown in FIGS. 9A and 9B, in the third sheet adhering step, the periphery of the sheet 21 adhered to the surface 10a of the substrate 10 and both longitudinal ends thereof are bent to form the substrate The two short side surfaces 10c and 10c are bonded with an adhesive.

    Specifically, by using a heated bending jig, both ends of the sheet 21 in the longitudinal direction are formed on the protruding front end surface of the front female protrusion 4b and the front male recess 5b on the short side surface 10c of the substrate 10. A hot press operation is performed by pressing the bottom surface and reactivating (remelting) the adhesive on the back surface of the sheet 21. Thereafter, the heating of the bending jig is stopped, and the both ends of the sheet 21 in the longitudinal direction of the bending jig in an unheated state are connected to the protruding front end surface of the front side female convex part 4b of the short side surface 10c of the substrate 10 and A cold press operation is performed in which the adhesive is pressed against the bottom surface of the front male recess 5b and solidified by cooling the reactivated adhesive.

    By the hot press operation and the cold press operation described above, the short edge of the peripheral edge portion 23 of the sheet 21 is formed on the protruding front end surface of the front female real convex portion 4b and the bottom surface of the front male real concave portion 5b on the short side surface 10c of the substrate 10. The side surface bonding portions 23b and 23b are bonded.

When this third sheet bonding step is completed, the peripheral edge 23 of the rectangular sheet 21 is bent and bonded to the two long side surfaces 10b and 10b and the two short side surfaces 10c and 10c of the base material 10. It becomes. At this time, at the four corners around the base material 10, the corner portions of the peripheral edge portion 23 of the sheet 21 protrude from the long side surface 10 b and the short side surface 10 c of the base material 10 and are not bonded to the base material 10. 23c, ..., 23c. As shown in FIG. 9B, each surplus portion 23 c includes a portion where each corner portion of the peripheral edge portion 23 of the sheet 21 protrudes from the long side surface 10 b of the substrate 10 at each corner portion of the substrate 10. It is formed by being bent so that the back surfaces of the portion protruding from the short side surface 10c overlap each other, and is formed in a triangular shape in a side view.
(3) Surplus part processing process Next, the sheet | seat 21 which adhere | attached the surplus part 23c of the sheet | seat 21 formed in each corner | angular part of the base material 10 in the above-mentioned lapping process to the short side surface 10c, 10c of the base material 10. A surplus partial processing step of folding and adhering to the short side surface adhering portion 23b is performed. The surplus partial processing step includes a bending step and a heat fusion step.

[Bending process]
As shown in FIGS. 10A and 10B, in the bending step, each surplus portion 23 c of the sheet 21 is folded over the short-side-side bonding portion 23 b of the sheet 21 bonded to the short-side surface of the substrate 10. Bend it. Thereby, the short side surface adhesive portions 23b and 23b of the peripheral edge portion 23 of the sheet 21 and the surplus on the protruding front end surface of the front side female real convex portion 4b of the short side surface 10c of the base material 10 and the bottom surface of the front side male real concave portion 5b. Two short side surface portions 20c, 20c of the decorative sheet layer 20 are formed by the portions 23c, ..., 23c.

[Thermal fusion process]
As shown in FIGS. 11 (a) and 11 (b), in the heat fusion process, the overlapping portion 20d where the surplus portion 23c of the decorative sheet layer 20 overlaps the short side surface adhesive portion 23b is pressed into the accommodating recess 30. By heating while pushing, the redundant portion 23c and the overlapping portion 20d of the short side surface adhesive portion 23b are melted, and then both are fixed (heat-sealed) by cooling.

    As described above, the present wrapping decorative board 1 performs the above-described excessive partial processing step after the wrapping step of the sheet 21 to the base material 10, thereby allowing the sheet 21 that has not been adhered to the base material 10 to protrude. The excessive portion 23c is heat-sealed in a state where it is folded on the short side surface adhesive portion 23b without being cut.

    By the way, in the decorative sheet layer 20, the overlapping portion 20d where the surplus portion 23c overlaps the short side surface adhesive portion 23b is formed to be thicker than the other portions. Thus, when a part of the short side surface portion 20c of the decorative sheet layer 20 is formed to be thick, there is a gap between the wrapping decorative plates 1 when the plurality of wrapping decorative plates 1 are arranged and used as a flooring or a wall material. Since it is formed, the joints may become large and the design properties may be reduced.

    However, in this embodiment, when the surplus portion 23c is heat-sealed to the short side surface adhesive portion 23b in the surplus portion processing step, the overlapping portion 20d of the decorative sheet layer 20 is pushed into the housing recess 30. Therefore, the overlapping portion 20d that is thicker than the other portions in the short side surface portion 20c of the decorative sheet layer 20 does not protrude to the outside of the short side surface 10c of the base material 10, and fits along the other portions. Become.

-Effect of Embodiment 1-
As described above, according to the method for manufacturing the lapping decorative board 1, the sheet 21 larger than the surface 10a of the base material 10 is folded and bonded to the surface 10a of the base material 10 and the peripheral side surfaces 10b, 10b, 10c, 10c. Later, the excess portions 23c,..., 23c that protrude from the side surfaces 10b, 10c of the base material 10 at the corners 23 of the base material 10 are The short side surface 10c of the material 10 was finished by being folded and heat-sealed on the short side surface bonding portion 23b bonded to the short side surface 10c. Therefore, it is not necessary to cut off the surplus portions 23c, ..., 23c as in the conventional manufacturing method. Therefore, according to the above manufacturing method, the excess portions 23c,..., 23c may be bent and overlapped on the short side surface adhesive portion 23b without being cut, and heat-sealed. Since the finish is not greatly affected by the processing accuracy as in the conventional manufacturing method of cutting off the surplus portions 23c,..., 23c, the lapping decorative board 1 excellent in design and workability is easily formed. be able to. Furthermore, since the surplus portions 23c,..., 23c are fixed to the short side surface adhesive portion 23b by using an adhesive or the like by heat fusion, it is easier to design than the case of fixing using an adhesive. Can be produced.

    By the way, in the structure which is folded and heat-sealed to the short side surface adhesive portion 23b without cutting off the surplus portions 23c,..., 23c of the sheet as described above, the surplus portions 23c,. The overlapping portion 20d that overlaps the short side surface adhesive portion 23b is thicker than the other portions. Thus, when a part of the decorative sheet layer 20 is formed thick, a gap is formed between the wrapping decorative plates 1 when the plurality of wrapping decorative plates 1 are arranged side by side and used as a flooring or a wall material. There is a risk that the design property will be lowered.

    However, in the manufacturing method of the lapping decorative board 1 of Embodiment 1, the surplus portions 23c,..., 23c of the peripheral edge portion 23 of the sheet 21 are not cut off, but are folded and overlapped on the short side surface adhesive portion 23b, and then surplus. While pressing the overlapping portion 20d of the decorative sheet layer 20 where the portions 23c,..., 23c overlap the short side surface adhesive portion 23b, into the housing recess 30 formed on the short side surfaces 10c, 10c of the base material 10 before the sheet 21 is bonded. The excess portions 23c,..., 23c are heat-sealed to the short side surface adhesive portion 23b. By such a manufacturing method, the overlapping portion 20d of the decorative sheet layer 20 that is thicker than the other portions does not protrude to the outside of the short side surfaces 10c, 10c of the base material 10, and the other portions are adapted to the other portions. . Therefore, the lapping decorative board 1 excellent in design property and workability can be manufactured. In addition, since the protrusion of the overlapping portion 20d of the decorative sheet layer 20 to the outside of the base material 10 is suppressed, the wrapping decorative board 1 that does not cause a construction failure such as misalignment when a plurality of the decorative sheet layers 20 are used side by side as a flooring or a wall material. It can also be easily manufactured.

<< Embodiment 2 of the Invention >>
As shown in FIGS. 12 to 21, the lapping decorative board 1 according to the second embodiment is provided with a receding surface 40 on the short side surfaces 10 c and 10 c of the base material 10 instead of the accommodating recess 30 provided in the first embodiment. The excess portions 23c,..., 23c of the sheet 21 are folded and heat-sealed to the short side surface adhesive portions (retracted surface adhesive portions) 23b, 23b of the sheet 21 adhered to the receding surface 40. Is.

    As shown in FIG.12 and FIG.13, the lapping decorative board 1 which concerns on Embodiment 2 of this invention is the rectangular-plate-shaped base material 10 similarly to Embodiment 1, and this base material 10 via an adhesive agent. And a decorative sheet layer 20 composed of a sheet 21 bonded and integrated.

<Structure of base material>
As shown in FIGS. 14 and 15, the base material 10 is generally configured similarly to the first embodiment. On the other hand, in the second embodiment, as shown in FIGS. 16 and 17, on the short side surfaces 10 c and 10 c of the base material 10, instead of the accommodating recess 30 formed in the first embodiment, an excess portion of the sheet 21. A receding surface 40 is formed to ensure a space S1 for folding 23c.

[Backward side]
As shown in FIG. 15 to FIG. 17, the protruding front end surface of the front-side female real convex portion 4b and the front-side male real concave portion 5b to which the short-side side surface adhering portion 23b of the sheet 21 of the short side surface 10c, 10c of the base material 10 is bonded. Is formed on a receding surface 40 located on the inner side of the base material 10 with respect to the outer edge of the surface 10a of the base material 10 so that a space S1 in which the surplus portions 23c, 23c of the sheet 21 are accommodated is formed. . In the present embodiment, the shorter the side surfaces 10c, 10c of the base material 10, the front end surfaces of the front female protrusions 4b and the bottom surfaces of the front male recesses 5b are directed toward the back side in the front and back direction of the base material 10, It forms in the inclined surface located inside, and comprises the receding surface 40. FIG. 16 and 17 are outlines of the front-side female real convex portion 4b after actual machining and before the receding surface 40 is formed (before the receding surface machining process).

<Composition of decorative sheet layer>
Also in the second embodiment, the decorative sheet layer 20 is generally configured in the same manner as in the first embodiment, and integrally covers and adheres to the surface 10a, the long side surface 10b, 10b, and the short side surface 10c, 10c of the base material 10. It is formed by the sheet | seat 21 adhere | attached with the agent.

    As described above, the protruding front end surface of the front side female real convex portion 4b and the bottom surface of the front side male concave portion 5b to which the short side surface adhesive portion 23b of the sheet 21 of the short side surface 10c, 10c of the base material 10 is bonded are Further, it is formed on the receding surface 40 located inside the base material 10 with respect to the outer edge of the surface 10 a of the base material 10. That is, in the second embodiment, the two short side surface bonding portions 23 b and 23 b of the sheet 21 constitute a receding surface bonding portion according to the present invention that is bonded to the receding surface 40.

    And also in Embodiment 2, without adhering to the base material 10 of the sheet | seat 21, in each corner | angular part of the base material 10, the excess parts 23c, ..., 23c which protruded from the long side surface 10b and the short side surface 10c are as follows. It is folded on the short side surface bonding portions 23b, 23b and bonded with an adhesive in that state. As described above, the short side surface adhesive portions 23b, 23b where the surplus portions 23c, ..., 23c are folded are bonded to the receding surface 40 of the short side surface 10c, 10c of the base material 10. That is, the surplus portions 23c and 23c are folded and bonded to the short side surface bonding portion (retracting surface bonding portion) 23b of the sheet 21 bonded to the receding surface 40 of the short side surface 10c and 10c of the base material 10. . With such a configuration, overlapping portions of the decorative sheet layer 20 that are thicker than the other portions by the surplus portions 23c and 23c of the sheet 21 are formed on the short side surfaces 10c and 10c of the base material 10 by the receding surface 40. Since it accommodates in space S1, the protrusion to the outer side of the base material 10 of the duplication part of the decorative sheet layer 20 is suppressed.

    With the above-described configuration, the surface 10a and the side surfaces 10b and 10c of the base material 10 are covered with the sheet 21, and the decorative sheet layer 20 is formed on the surface 10a and the side surfaces 10b and 10c of the base material 10. .

-Manufacturing method-
Hereinafter, the manufacturing method of the lapping decorative board 1 which concerns on Embodiment 1 of this invention is demonstrated based on FIGS. The manufacturing method of the wrapping decorative board 1 includes a notch processing step of the base material 10, a wrapping step of the sheet 21 on the base material 10, and a surplus partial processing step. In addition, the order of the process demonstrated below is only an example, and the manufacturing method which concerns on this invention is not restricted to this.
(1) Notch processing step of substrate 10 First, the substrate 10 is notched. The notch processing of the base material 10 includes actual processing, receding surface processing, and chamfering processing. In the present embodiment, the receding surface machining process is performed simultaneously with the actual machining process. The actual machining process, the receding surface machining process, and the chamfering machining process may be performed simultaneously or sequentially.

[Actual machining process]
In the actual processing step, the long side surfaces 10b and 10b and the short side surfaces 10c and 10c of the base material 10 are cut out, and the long side surfaces 10b and 10b and the short side surfaces 10c and 10c are filled with the female seed 4 and the male seed 5, respectively. Each is processed.

[Chamfering process]
In the chamfering process, the corners of the surface 10a of the substrate 10 and the long side surfaces 10b and 10b and the short side surfaces 10c and 10c are cut obliquely (or in an arc shape), and the substrate 10 is directed toward the outside. The chamfered portion 2 located on the back side is formed.

[Recessed surface machining process]
In the receding surface processing step, the protruding front end surface of the front female projection 4b and the bottom surface of the front male recess 5b on the short side surfaces 10c, 10c of the base 10 are cut obliquely, and the back side in the front and back direction of the base 10 The receding surface 40 located inside is formed so that it goes to.
(2) Lapping process to the base material 10 Next, the sheet 21 is subjected to lapping processing on the surface 10a, the long side surfaces 10b and 10b, and the short side surfaces 10c and 10c of the base material 10, and the decorative sheet layer is applied to the base material 10. 20 is formed. The lapping process includes an adhesive application process and first to third sheet bonding processes.

[Adhesive application process]
In the adhesive application step, an adhesive (moisture curable urethane resin hot melt adhesive) is applied to the back surface of the sheet 21. Note that the adhesive may be applied to the front surface 10a, the long side surfaces 10b and 10b, and the short side surfaces 10c and 10c of the base material 10, instead of being applied to the back surface of the sheet 21.

    For example, the sheet 21 is wound around a roll or the like, and is continuously fed out from the roll and supplied. The sheet 21 corresponds to the width of the base material 10 when the width of the sheet 21 is previously wrapped. The reference width may be set to be larger than the reference width. Specifically, the reference width of the sheet 21 is lapped by aligning the width direction of the sheet 21 to the base material 10 and bonding the sheet 21 to the long side surfaces 10b and 10b of the base material 10 in the second sheet bonding process described later. The ends of the long side surface adhesive portions 23a, 23a of the sheet 21 thus formed (the back side ends in the front and back direction of the base material 10) are formed on the female real concave portion 4a and the male real convex portion 5a of the long side side surfaces 10b, 10b. The width does not reach. FIG. 18A shows a sheet 21 having a reference width.

[First sheet bonding step]
As shown in FIGS. 18A and 18B, in the first sheet bonding step, the sheet 21 is pressed against the surface 10a of the base material 10, and the adhesive is solidified and bonded. At this time, the sheet 21 and the base material 10 are accurately aligned in the width direction and bonded. By such an operation, the main body portion 22 of the sheet 21 is bonded onto the surface 10 a of the base material 10. In the present embodiment, the surface portion 20 a of the decorative sheet layer 20 is configured by the main body portion 22 of the sheet 21.

[Second sheet bonding step]
As shown in FIGS. 19A and 19B, in the second sheet adhering step, the peripheral portion of the sheet 21 adhered to the surface 10a of the substrate 10 and both ends in the width direction are bent to form the substrate. The two long side surfaces 10b and 10b are bonded with an adhesive.

    Specifically, by using a heated bending jig, both end portions in the width direction of the sheet 21 are formed on the protruding front end surface of the front female protrusion 4b and the front male recess 5b on the long side surface 10b of the substrate 10. A hot press operation is performed by pressing the bottom surface and reactivating (remelting) the adhesive on the back surface of the sheet 21. Thereafter, the heating of the bending jig is stopped, and the both ends in the width direction of the sheet 21 are placed in the unheated bending jig, and the protruding front end surface of the front side female convex part 4b of the long side surface 10b of the substrate 10 and A cold press operation is performed in which the adhesive is pressed against the bottom surface of the front male recess 5b and solidified by cooling the reactivated adhesive.

    By the above hot press operation and cold press operation, the length of the peripheral edge portion 23 of the sheet 21 on the protruding front end surface of the front side female real convex portion 4b and the bottom surface of the front side male real concave portion 5b of the long side surface 10b of the substrate 10 is increased. The side surface bonding portions 23a and 23a are bonded. In the present embodiment, the two long side surface portions 20 b and 20 b of the decorative sheet layer 20 are configured by the two long side surface adhesive portions 23 a and 23 a of the sheet 21.

[Third sheet bonding step]
As shown in FIGS. 20A and 20B, in the third sheet adhering step, the periphery of the sheet 21 adhered to the surface 10a of the substrate 10 and both longitudinal ends thereof are bent to form the substrate The two short side surfaces 10c and 10c are bonded with an adhesive.

    Specifically, by using a heated bending jig, both ends of the sheet 21 in the longitudinal direction are formed on the protruding front end surface of the front female protrusion 4b and the front male recess 5b on the short side surface 10c of the substrate 10. A hot press operation is performed by pressing the bottom surface and reactivating (remelting) the adhesive on the back surface of the sheet 21. Thereafter, the heating of the bending jig is stopped, and the both ends of the sheet 21 in the longitudinal direction of the bending jig in an unheated state are connected to the protruding front end surface of the front side female convex part 4b of the short side surface 10c of the substrate 10 and A cold press operation is performed in which the adhesive is pressed against the bottom surface of the front male recess 5b and solidified by cooling the reactivated adhesive.

    By the hot press operation and the cold press operation described above, the short edge of the peripheral edge portion 23 of the sheet 21 is formed on the protruding front end surface of the front female real convex portion 4b and the bottom surface of the front male real concave portion 5b on the short side surface 10c of the substrate 10. The side surface bonding portions 23b and 23b are bonded.

    Note that, as described above, in the present embodiment, the entire front end of the front female protrusion 4b and the bottom surface of the front male recess 5b on the short side surfaces 10c and 10c are back in the front and back direction of the substrate 10. It is comprised in the receding surface 40 which consists of an inclined surface located inside as it goes. Therefore, the short side surface adhesive portions 23 b and 23 b of the peripheral edge portion 23 of the sheet 21 are bonded to the receding surface 40 that is located on the inner side toward the back side in the front and back direction of the base material 10.

When this third sheet bonding step is completed, the peripheral edge 23 of the rectangular sheet 21 is bent and bonded to the two long side surfaces 10b and 10b and the two short side surfaces 10c and 10c of the base material 10. It becomes. At this time, at the four corners around the base material 10, the corner portions of the peripheral edge portion 23 of the sheet 21 protrude from the long side surface 10 b and the short side surface 10 c of the base material 10 and are not bonded to the base material 10. 23c, ..., 23c. As shown in FIG. 20 (b), each surplus portion 23 c includes a portion where each corner portion of the peripheral edge portion 23 of the sheet 21 protrudes from the long side surface 10 b of the substrate 10 at each corner portion of the substrate 10. The back surface of the part which protruded from the short side surface 10c is bent and formed so that it may overlap.
(3) Surplus part processing process Next, the sheet | seat 21 which adhere | attached the surplus part 23c of the sheet | seat 21 formed in each corner | angular part of the base material 10 in the above-mentioned lapping process to the short side surface 10c, 10c of the base material 10. A surplus partial processing step is performed in which the short side surface bonding portion (retracted surface bonding portion) 23b is folded and heat-sealed. The surplus partial processing step includes a bending step and a heat fusion step.

[Bending process]
As shown in FIGS. 21A and 21B, in the bending process, each excess portion 23 c of the sheet 21 is bonded to the receding surface 40 formed on the short side surfaces 10 c and 10 c of the substrate 10. It is bent so as to fold over the short side surface adhesive portion (retracted surface adhesive portion) 23b. Thereby, 2 of the decorative sheet layer 20 is formed on the receding surface 40 of the short side surface 10c of the base material 10 by the short side surface adhesive portions 23b, 23b and the surplus portions 23c,. Two short side surfaces 20c, 20c are formed.

[Thermal fusion process]
In the heat fusion process, the overlapping portion of the surplus portion 23c and the short side surface adhesive portion 23b is heated by heating the overlapping portion where the surplus portion 23c of the decorative sheet layer 20 overlaps the short side surface adhesive portion (retracted surface adhesive portion) 23b. Then, the two are fixed (thermally fused) by cooling.

    As described above, the present wrapping decorative board 1 performs the above-described excessive partial processing step after the wrapping step of the sheet 21 to the base material 10, thereby allowing the sheet 21 that has not been adhered to the base material 10 to protrude. The excessive portion 23c is heat-sealed in a state where it is folded on the short side surface adhesive portion 23b without being cut.

    By the way, in the decorative sheet layer 20, the overlapping portion where the surplus portion 23c overlaps the short side surface adhesive portion 23b is formed to be thicker than the other portions. Thus, when a part of the short side surface portion 20c of the decorative sheet layer 20 is formed to be thick, there is a gap between the wrapping decorative plates 1 when the plurality of wrapping decorative plates 1 are arranged and used as a flooring or a wall material. Since it is formed, the joints may become large and the design properties may be reduced.

    However, in the present embodiment, in the surplus portion processing step, the surplus portions 23c,..., 23c of the sheet 21 are arranged on the inner side of the base material 10 rather than the outer edge of the surface 10a of the base material 10 at the peripheral edge 23 of the sheet 21. It was decided to be folded and heat-sealed to the short side surface adhesive portions (retracted surface adhesive portions) 23b, 23b bonded to the receding surface 40 located at the position. Therefore, the overlapping part of the decorative sheet layer 20 that is thicker than the other parts by the surplus parts 23c,..., 23c of the sheet 21 is outside of the receding surface 40 by the receding surface 40 and more than the outermost edge of the substrate 10. It is accommodated in a space S1 formed at an inner position. Therefore, in the decorative sheet layer 20, the protrusion of the overlapping portion where the surplus portions 23c,..., 23c of the sheet 21 overlap the short side surface adhesive portions (retracted surface adhesive portions) 23b, 23b to the outside of the base material 10 is suppressed.

-Effect of Embodiment 2-
As described above, the wrapping decorative board 1 according to the second embodiment can achieve the same effects as those of the first embodiment.

    Further, according to the wrapping decorative board 1 of the second embodiment, the protruding tip of the front female convex part 4b to which the peripheral part 23 of the sheet 21 of the two short side surfaces 10c, 10c facing each other of the base material 10 is bonded. The surface and the bottom surface of the front male concave portion 5b are respectively configured as receding surfaces 40 located inside the base material 10 with respect to the outer edge of the surface 10a of the base material 10, and the surplus portions 23c,. The sheet 21 was folded and heat-sealed to the short side surface adhesive portions (retracted surface adhesive portions) 23b and 23b that were bonded to the receding surface 40 of the base material 10 at the peripheral edge portion 23 of the sheet 21. By such a manufacturing method, the overlapping portion of the decorative sheet layer 20 that is thicker than the other portions by the surplus portions 23c,..., 23c of the sheet 21 is formed on the substrate 10 on the outside of the receding surface 40 by the receding surface 40. Is accommodated in a space S <b> 1 formed at a position inside the outermost edge. Therefore, in the decorative sheet layer 20, the protrusion of the overlapping portion where the surplus portions 23c,..., 23c of the sheet 21 overlap the short side surface adhesive portions (retracted surface adhesive portions) 23b, 23b to the outside of the base material 10 is suppressed. Accordingly, when the plurality of wrapping decorative boards 1 are arranged and used as a flooring or wall material, the wrapping decorative boards 1 having excellent design properties are formed without forming gaps between the wrapping decorative boards 1 and increasing joints. It can be manufactured easily. Moreover, since the protrusion to the outer side of the base material 10 of the overlapping part of the decorative sheet layer 20 is suppressed, when a plurality of the wrapping decorative plates 1 are arranged side by side and used as a flooring or a wall material, construction defects such as displacement do not occur. The wrapping decorative board 1 can also be easily manufactured.

<< Other Embodiments >>
In the first embodiment, the housing recess 30 is formed on the short side surfaces 10 c and 10 c of the base material 10. However, the housing recess 30 may be formed on the long side surfaces 10 b and 10 b of the base material 10. Although the accommodation recessed part 30 should just be formed in at least one of the long side surface 10b and the short side surface 10c which pinches | interpose each corner | angular part of the base material 10, it may be formed in both.

    Moreover, in the said Embodiment 1, although the accommodation recessed part 30 was comprised by the triangular-shaped ditch | groove, if the accommodation recessed part 30 is a magnitude | size which can accommodate the duplication part 20d of the decorative sheet layer 20, it will be triangular shape. Not limited to. It may be a rectangular groove.

    Further, in the first embodiment, the overlapping portion 20d of the decorative sheet layer 20 where the surplus portion 23c of the sheet 21 overlaps the short side surface adhesive portion 23b is pushed into the accommodating recess 30, but the accommodating recess 30 is not formed. In addition, the wrapping decorative plate 1 with high wrapping accuracy that does not cause the substrate 10 to be exposed even if the excess portion 23c of the sheet 21 is simply bent without being cut and thermally bonded to the short side surface adhesive portion 23b. Is more advantageous than the conventional method of manufacturing the wrapping decorative board 1 in that it can be easily manufactured.

    In the second embodiment, the entire surface of the protruding front end surface of the front female protrusion 4b and the bottom surface of the front male recess 5b on the short side surfaces 10c and 10c of the base 10 is directed toward the back in the front and back direction of the base 10. It forms in the inclined surface located inside, and the receding surface 40 was comprised by this inclined surface. However, the receding surface 40 according to the present invention is not limited to the inclined surface of the second embodiment. A space S1 for accommodating the overlapping portion is secured so that the protruding portion of the overlapping portion of the decorative sheet layer 20 that is thicker than the other portions by the excess portions 23c,. Any shape can be used as long as it can be retreated. For example, you may form by a circular arc surface.

    In the second embodiment, the entire surface of the front side female convex portion 4b of the short side surface 10c, 10c of the base 10 and the bottom surface of the front male concave portion 5b are inclined to form the receding surface 40. If the overlapping portion of the decorative sheet layer 20 that is thicker than the other portions by the surplus portions 23c,..., 23c of the sheet 21 can secure a space S1 for housing so as not to protrude further from the outer edge of the base material 10. For example, a part of the short side surfaces 10c, 10c of the base material 10 may be formed on the receding surface 40 instead of the entire protruding front end surface of the front side female real convex portion 4b and the bottom surface of the front side male real concave portion 5b.

    In Embodiment 2 described above, the receding surface 40 is formed on the short side surfaces 10 c and 10 c of the base material 10, but the receding surface 40 may be formed on the long side surfaces 10 b and 10 b of the base material 10. The receding surface 40 only needs to be formed on at least one of the long side surface 10b and the short side surface 10c sandwiching each corner of the base material 10, but may be formed on both.

    In each of the above embodiments, the wrapping decorative board 1 is used as a flooring. However, the use of the wrapping decorative board 1 is not limited to a flooring. In addition, for example, it is also possible to use for a wall material etc., for example.

    As described above, the present invention is useful for a method of manufacturing a wrapping decorative board in which the surface of a plate-like base material used for a flooring or wall material of a building is wrapped with a sheet.

1 Wrapping decorative board
10 Base material
10a surface
10b Long side surface (peripheral side surface, side surface)
10c Short side (peripheral side, side)
20 Decorative sheet layer
20d overlapping part
21 sheets
23 Edge
23a Long side adhesive
23b Short side adhesive (side adhesive, receding adhesive)
23c Surplus part
30 receiving recess
40 receding surface

Claims (3)

A method for producing a wrapping decorative board comprising a plate-like base material and a decorative sheet layer comprising a sheet bonded and integrated on the surface and peripheral side surfaces of the base material,
A sheet adhering step in which the sheet larger than the surface of the base material is bent so that a peripheral edge portion is located on the peripheral side surface of the base material and bonded to the surface of the base material and the peripheral side surface;
In the sheet adhering step, an excess portion which is a peripheral portion of the sheet and protrudes from a side surface of the base material at each corner portion of the base material is bent at each corner portion of the base material , a bending step Ru folded over side bonding portion provided on a side surface of the substrate there, by the excess portion heats the overlapping portion overlapping the side bonding portions, the side without cutting the excess portion The manufacturing method of the lapping decorative board characterized by including the surplus partial process process which has the heat-fusion process made to heat- bond to an adhesion part . A method for producing a wrapping decorative board comprising a plate-like base material and a decorative sheet layer comprising a sheet bonded and integrated on the surface and peripheral side surfaces of the base material,
A sheet adhering step in which the sheet larger than the surface of the base material is bent so that a peripheral edge portion is located on the peripheral side surface of the base material and bonded to the surface of the base material and the peripheral side surface;
In the sheet adhering step, an excess portion that is a peripheral portion of the sheet and protrudes from a side surface of the base material at each corner portion of the base material is provided on a peripheral portion of the sheet and the side surface of the base material. Surplus partial processing step of folding and heat-sealing to the side adhesive part,
Before the sheet bonding step, a part of the side surface of the base material is notched, and a notch is formed on the side surface of the base material to accommodate an overlapping portion where the surplus portion overlaps the side surface adhesive portion. and a step,
The surplus partial processing step is
A bending step of bending the surplus portion and overlapping the side surface bonding portion;
A lapping decorative board comprising: a heat-sealing step of heat-sealing the surplus portion to the side-surface adhesive portion while pushing the overlapping portion where the surplus portion overlaps the side-surface adhesive portion into the housing recess. Manufacturing method. A method for producing a wrapping decorative board comprising a plate-like base material and a decorative sheet layer comprising a sheet bonded and integrated on the surface and peripheral side surfaces of the base material,
A sheet adhering step in which the sheet larger than the surface of the base material is bent so that a peripheral edge portion is located on the peripheral side surface of the base material and bonded to the surface of the base material and the peripheral side surface;
In the sheet adhering step, an excess portion that is a peripheral portion of the sheet and protrudes from a side surface of the base material at each corner portion of the base material is provided on a peripheral portion of the sheet and the side surface of the base material. Surplus partial processing step of folding and heat-sealing to the side adhesive part,
Before the sheet bonding step, each of the pair of side surfaces facing each other of the base material is cut out, and the portion to which the peripheral edge portion of the sheet on each side surface is bonded is from the outer edge of the surface of the base material. also a cutout step processed to a retraction surface located on the inside of the substrate,
The surplus partial processing step is
A bending step of bending the surplus portion and overlapping the receding surface bonding portion provided on the receding surface of the base material of the side surface bonding portion;
A method for manufacturing a lapping decorative board, comprising: a heat-sealing step of heat-sealing the surplus portion to the receding surface bonding portion.

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