JP2005153150A - Manufacturing method of decorative panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a decorative panel ensuring the strength of the end part of the decorative panel, ensuring the continuity between the surface and end surface of the decorative panel from an aspect of beautifulness, quality and strength and capable of being manufactured relatively simply. <P>SOLUTION: This manufacturing method of the decorative panel has a lamination process for laminating a decorative sheet 3 to the surface 4 of a woody substrate 2, a cutting-off process for dividing the width in the thickness direction of the woody substrate 2 into a surface layer part 5 and a rear layer part 6 to cut off only the end part 7 of the surface layer part 5 to form a protruded curved surface 10 to the end part of the rear layer part 6, a bending process for bending the end part 7 of the surface layer part 5 in the direction of a rear surface 9 to bring the same into contact with the curved surface 10, a bonding process for bonding the end part 7 of the surface layer part 5 to the curved surface 10 through an adhesive and a trimming process for cutting off the leading end side of the surface layer part 5 protruded from the rear of the woody substrate 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing a decorative board, and more particularly, to a method for manufacturing a decorative board in which a decorative sheet is attached to the surface and end face of a wooden substrate such as a particle board to improve design.

  Conventionally, a lightweight decorative board using a particle board is known as a decorative board used for furniture doors and joinery. This decorative board is made by pasting a decorative sheet made of processed paper, etc. on the exposed part of the particle board, for example, the surface or end face (Kiguchi), and is relatively economical and durable and sound insulating. In recent years, there have been more opportunities to be used. The particle board is a plate formed by applying a synthetic resin adhesive to a small piece of wood and heating and compressing it.

  However, since the particle board is composed of small pieces of wood and there are many voids in the core layer portion, there is a drawback that the end face of the particle board is weaker than the surface. For this reason, it was difficult to ensure strength at the end face simply by attaching a decorative sheet. Moreover, since the unevenness | corrugation by many space | gap appears on the end surface which is a lip, it was not able to be finished in a beautiful makeup | decoration surface with the comparatively thin decorative sheet.

  Then, the following proposal is made about the manufacturing method of the decorative board using a particle board. For example, a reinforcing material is provided at the end portion, and a part of the decorative sheet attached to the surface of the particle board is covered on the end portion side. Specifically, as shown in FIG. 4, most of the end portions of the particle board 22 are cut out so as to leave only the surface layer chips 23 of the particle board 22 attached to the decorative sheet 21 ((a), (b )), The reinforcing member 25 is attached to the missing portion 24 formed by the excision (see (c)), and then the surface chip 23 is attached to the surface of the reinforcing member 25 which becomes the side end surface of the particle board 22. The decorative sheet 21 is bent and pasted (see (d)) (hereinafter referred to as “manufacturing method 1”).

Further, as another method, there is known a method in which the bonding surface is pretreated so that the end surface becomes a smooth flat surface. That is, it is a method of filling a gap by applying or polishing a sealing agent to the end face, and then sticking a decorative sheet via an adhesive (hereinafter referred to as “manufacturing method 2”). ).
JP-A-7-60723

  However, according to the manufacturing method 1 described above, the reinforcing member 25 is embedded in the end portion side, thereby increasing the strength. It was difficult to match the strength of That is, in the manufacturing method 1, even if continuity can be ensured in terms of aesthetics and quality between the surface side 26 and the end side 27, continuity can be ensured in terms of strength. could not.

  Moreover, in the manufacturing method 1, since the reinforcing member 25 is separately required, the structure is complicated and the manufacturing cost may increase. Further, since the work of attaching the reinforcing member 25 to the missing portion 24 with an adhesive or the like is added, the work becomes complicated and the burden on the operator is increased.

  On the other hand, in the manufacturing method 2, since the processing methods are different from each other on the surface side and the end side of the particle board and the decorative sheet is attached separately, aesthetic and qualitative continuity is ensured between them. I couldn't. Moreover, the strength of the end portion of the decorative board could not be increased, and there was a concern about breakage of the end portion.

  Therefore, in view of the above situation, the present invention secures the strength of the end portion of the decorative board and ensures aesthetic, qualitative, and strength continuity between the surface and the end face of the decorative board, In addition, an object of the present invention is to provide a method for manufacturing a decorative board that can be manufactured relatively easily.

  The method for producing a decorative board according to the present invention includes a step of attaching a decorative sheet to the surface of a wooden substrate, and a width in the thickness direction of the wooden substrate, divided into a surface layer portion and a back layer portion, Only the end portion side of the back layer portion is cut off, and the width between the end portions of the back layer portion formed after the cutting is gradually increased from the boundary between the surface layer portion and the back layer portion toward the back surface of the wooden substrate. A cutting step of forming a convex curved surface on the end surface of the back layer portion so as to be long, a bending step of bending the end portion side of the surface layer portion in the back surface direction, and contacting the curved surface; And a bonding step of bonding the end side of the portion and the curved surface through an adhesive.

  Here, the “cutting step”, “bending step”, and “adhesion step” are sequentially performed in this order, but the order of the “sticking step” is not specified. That is, the process of sticking the decorative sheet on the surface of the wooden board may be before or after cutting the end side of the wooden board, or the end side of the surface layer portion is a curved surface. It may be after adhering to. However, if the sticking is performed before the end side of the wooden substrate is cut off, only the sticking process to the surface of the wooden base material (that is, the flat surface) is required, thereby simplifying the structure of the sticking device and the like. It becomes possible. In the following description, it is assumed that the “sticking step” is performed first.

  In addition, the “woody substrate” is a plate-shaped wood, and can be exemplified by a particle board or a fiber board in which the strength of the core layer portion is particularly weak. The “surface layer portion” and the “back layer portion” are divided for convenience in order to bisect the width in the thickness direction of the wooden substrate, and the interior of the custom wooden substrate is composed of multiple layers. Even if it exists, it is not related to this lamination state. The thickness of the “surface layer portion” is not particularly limited, but an appropriate value is set depending on the strength and bendability of the surface layer portion. The degree of bendability varies depending on the type of wood substrate, but also varies depending on conditions such as humidification, heating, and pressurization during bending.

  According to the present invention, first, a decorative sheet is attached to the surface of a wooden substrate. That is, a wooden substrate with a decorative sheet is formed. Then, only the edge part side of the back layer part in a wooden board | substrate is excised. By this cutting, the width between the end portions of the back layer portion becomes shorter than the width between the end portions of the surface layer portion, and the end surface shape of the back layer portion becomes a convex curved surface (arc-shaped curved surface). The curved surface is formed such that the protruding length gradually increases from the boundary between the surface layer portion and the back layer portion toward the back surface of the wooden substrate. In other words, the end surface shape of the back layer portion is an arcuate curved surface inclined downward toward the extended line of the back surface.

  Then, the edge part side of the surface layer part to which the decorative sheet was stuck is bent in the back surface direction, and is made to contact | abut to a curved surface. In other words, the flat surface layer portion is bent along the curved surface of the back layer portion together with the decorative sheet into an arc shape, and the decorative sheet, the surface layer portion, and the curved surface are overlapped with each other. At this time, the surface layer portion and the curved surface are bonded via an adhesive, and the decorative sheet and the surface layer portion are maintained in a curved state.

  Thus, by curving the end portion side of the surface layer portion to form the end portion side of the decorative plate, the end surface of the back layer portion is covered by the surface layer portion, and the surface side and the end portion side of the decorative plate are the same It becomes the structure of.

  Moreover, in the manufacturing method of the decorative board of the present invention, it is preferable that “the process further includes a trimming step of cutting off a front end side of the surface layer portion protruding from the back surface of the wooden substrate after the bonding step”.

  By the way, if the end portion of the surface layer portion, which is a plate-like member, is bent by a bending process, the outer peripheral side is pulled more than the inner peripheral side, so the end surface does not become a horizontal plane, and the inner peripheral surface side protrudes downward. . For this reason, in order to ensure that the surface layer portion is covered with the end surface of the wooden substrate, the outer peripheral side tip of the surface layer portion must be positioned outside at least the back surface of the wooden substrate when being curved. For this reason, the front end side of a surface layer part will protrude from the back surface of a wooden board | substrate, and there exists a possibility of deteriorating appearance. In addition, when the surface layer portion and the decorative sheet are curved, the end portions of the surface layer portion and the decorative sheet are preliminarily arranged so that the front end portions thereof are located on the extension line of the back surface of the wooden board (that is, flush with each other) If cut, the protrusion from the back surface can be suppressed, but the elongation rate of the surface layer portion changes depending on the temperature and humidity during bending, so the surface layer portion and the tip of the decorative sheet and the wooden substrate There is a risk that a step will be formed between the back surface of the material.

  On the other hand, the present invention has a trimming process, and the front end side of the surface layer portion is cut out along the back surface. That is, a slightly longer surface layer portion is curved and bonded, and then the excess portion is cut off. Therefore, the end portion of the surface layer portion after the cutting is surely positioned on the extension of the back surface.

  By the way, in the manufacturing method of the decorative board of this invention, the said decorative sheet stuck in the said sticking process can be made into a sheet | seat which has elasticity.

  When the surface layer portion is curved, the decorative sheet attached to the outer peripheral side receives a tension in the circumferential direction, but according to the present invention, the decorative sheet is stretched according to the tension because it has elasticity. For this reason, generation | occurrence | production of the crack etc. in a decorative sheet can be prevented beforehand.

  Further, in the method of manufacturing a decorative board according to the present invention, “in the bonding step, before the end portion side of the surface layer portion and the curved surface are bonded, a sealing agent is applied to these bonded surfaces. May be adopted.

  Here, when the unevenness | corrugation is formed in the material surface of a timber, the sealing agent is a well-known processing agent used for filling a small hole, and can specifically illustrate abrasive powder.

  According to this, since the space | gap formed in two to-be-adhered surfaces is filled with a sealing agent, an adhesion | attachment process becomes reliable and the intensity | strength of a decorative board can be improved further.

  The decorative board manufacturing method of the present invention is configured in such a manner that the end portion side is configured using the surface layer portion of the wooden substrate, even when a wooden substrate having a relatively weak core layer portion is used. A decorative board with sufficient strength can be produced. In particular, since the front side and the end side of the decorative board are formed continuously and so as to wrap the back layer portion, aesthetic continuity and qualitative continuity are provided between the surface and the end face of the decorative board. In addition, strong continuity can be secured. In the present invention, since the reinforcing member is not used, it can be manufactured relatively easily and inexpensively.

  In addition, since the end surface shape of the back layer portion is an arcuate curved surface, the boundary portion between the surface side and the end portion side is eliminated, and continuity can be further enhanced. In this case, since the shape when the surface layer portion is bent and the shape of the curved surface are approximate, the burden on the surface layer portion can be reduced, and breakage and cracking during production can be prevented. it can.

  Hereinafter, a decorative board and a manufacturing method thereof according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing a configuration of a decorative board, and FIG. 2 is an explanatory view showing a manufacturing method of the decorative board. As shown in FIG. 1, the decorative board 1 is composed of a plate-like wooden substrate 2 which is a particle board, and a decorative sheet 3 attached to the end 7 and the surface 4 thereof. Although details will be described later, an arcuate curved surface is formed between the upper surface corners of the decorative plate 1, that is, between the front surface 4 side and the end portion 7 side.

  The wooden board | substrate 2 consists of a board | plate which apply | coated the synthetic resin adhesive to the small piece of wood, and shape | molded by heat-compressing. Although the thickness of the wooden substrate 2 is not particularly limited, a member having a thickness of 10 mm or more is usually used. Moreover, the wooden board | substrate 2 is comprised from the surface 4 part and back surface 9 part with comparatively high density, and the core layer part with low density laminated | stacked among them. By providing the core layer portion having a low density, the weight is reduced. Since the core layer portion has a relatively large number of voids, it is weaker in strength than the front surface 4 portion and the back surface 9 portion.

  The decorative sheet 3 attached to the wooden substrate 2 is not particularly limited. For example, a thin paper, a precoated paper, or a titanium impregnated paper impregnated with a synthetic resin. A reinforced stencil sheet or the like backed with Japanese paper on the back side of a thin veneer can be used. In addition, it is preferable that the decorative sheet 3 has elasticity, and according to this, even when the end portion 7 side is bent in a state where the decorative sheet 3 is attached to the wooden substrate 2, the occurrence of cracks and the like can be prevented. .

  Then, the manufacturing method of the decorative board 1 is demonstrated based on FIG. This manufacturing method can be broadly divided into five steps, that is, “sticking step”, “cutting step”, “bending step”, “bonding step”, and “trimming step”. First, in the “sticking step”, the decorative sheet 3 is stuck on the surface 4 of the wooden substrate 2 as shown in FIG. The size of the decorative sheet 3 is the same size as the surface 4 of the wooden substrate 2, and the entire surface 4 is covered with the decorative sheet 3 by this sticking. When sticking, an adhesive such as vinyl resin, EVA, or acrylic resin is used.

  In the “cutting step”, as shown in FIG. 2B, a part of the end portion 7 of the wooden board 2 is cut using a machine (not shown) such as an NC router. Specifically, when it is assumed that the width in the thickness direction of the wooden substrate 2 is divided into the surface layer portion 5 and the back layer portion 6, only the end 7 side of the back layer portion 6 is cut out. By this excision, the width H between the end portions of the back layer portion 6 becomes shorter than the width between the end portions of the surface layer portion 5, and the end surface shape of the back layer portion 6 is inclined downward toward the extended line of the back surface 9. A convex curved surface 10 is obtained. In other words, the arcuate curved surface is formed so that the protruding length gradually increases from the boundary between the surface layer portion 5 and the back layer portion 6 toward the back surface 9 of the wooden substrate 2. In addition, in FIG.2 (b), although the surface layer part 5 and the back layer part 6 are divided by the dashed-two dotted line, this does not show that the internal structure of the wooden substrate 2 is divided into two, They are only separated for convenience in order to facilitate understanding.

  In the “bending step”, a press machine having a batten 8 is used to press the surface layer portion 5 and the end 7 of the decorative sheet 3 attached thereto in the direction of the back surface 9 through the batten 8. Thereby, as shown in FIG.2 (c), the edge part 7 of the surface layer part 5 with the decorative sheet 3 is bent so that it may bend, and contact | abuts to the curved surface 10. FIG. That is, the back side (lower side in the drawing) surface of the end portion 7 of the surface layer portion 5 is curved along the curved surface 10 and is in surface contact with each other (overlapping state). At this time, an adhesive is applied to the curved surface 10 in advance, and the surface layer portion 5 and the curved surface 10 that are in contact with each other are bonded via the adhesive. Thereby, the surface layer portion 5 and the decorative sheet 3 are held in a curved state. That is, the process of applying an adhesive in advance during the bending process and the process of pressing the curved decorative sheet 3 and the surface layer portion 5 against the curved surface 10 correspond to the “adhesion process”. In this case, urea resin, phenol resin, or the like is used as the adhesive.

  Further, as a pretreatment for bonding, it is preferable to apply a sealing material such as abrasive powder to the curved surface 10 to be bonded and the lower surface of the surface layer portion 5. According to this, the space | gap (space | gap between the small pieces of wood) formed in the curved surface 10 and the surface layer part 5 is filled with the sealing agent, and an adhesion | attachment process is ensured. In particular, if a rubber-based paint or resin is applied as a sealing material, it is possible to obtain a moisture-proof effect in addition to smoothing the adherend surface.

  In the “trimming step”, as shown in FIG. 2D, the front end side (end portion 7 side) of the surface layer portion 5 protruding from the back surface 9 of the wooden substrate 2 is cut out along the extension line of the back surface 9. That is, the unnecessary shape is removed and the overall shape is adjusted.

  Thus, in the manufacturing method of the present embodiment, the curved surface 10 (end surface) of the back layer portion 6 is covered by the end portion 7 side of the surface layer portion 5 by sequentially performing the five steps, and the surface of the decorative plate 1 The internal structure (particularly the laminated state) on the 4 side and the end 7 side is the same. That is, by constructing the end portion side of the decorative plate 1 using the surface layer portion 5 having relatively high strength, it is possible to manufacture the decorative plate 1 in which the strength of the end portion 7 is ensured. In particular, the surface layer portion 5 is continuously formed on the front surface 4 side and the end portion 7 side, and is constructed so as to wrap the back layer portion 6, so that it is aesthetic between the front surface 4 side and the end portion 7 side. Continuity, qualitative continuity, and strength continuity can be ensured.

  Moreover, in the manufacturing method of the decorative board 1 of this embodiment, since the end surface shape of the back layer portion 6 is an arcuate curved surface 10, the boundary portion between the surface 4 side and the end portion 7 side is eliminated, and continuity is achieved. Can be further enhanced. That is, a visual sense of unity can be ensured. In this case, since the shape when the surface layer portion 5 and the decorative sheet 3 are bent and the shape of the curved surface 10 are approximated, the burden given to the surface layer portion 5 and the decorative sheet 3 can be reduced. Breakage and cracks can be suppressed. In addition, if the curvature in the curved surface 10 is made small, the burden concerning the surface layer part 5 and the decorative sheet 3 can be further reduced. However, since the ratio of the curved part in the decorative sheet 3 and the surface layer part 5 will increase when the curvature of the curved surface 10 is small, the usability as a plate material becomes poor. Therefore, the curvature of the curved surface 10 is determined in consideration of these points.

  The present invention has been described with reference to preferred embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention as described below. And design changes are possible.

  That is, in the manufacturing method according to the present embodiment, the surface layer portion 5 is cut so that the lower surface thereof is smooth. However, as shown in FIG. 3, the lower surface of the surface layer portion 13 of the wooden substrate 12 is substantially V-shaped. The notches 14 may be provided at predetermined intervals. According to this, even if the thickness of the surface layer portion 13 is relatively thick, the deformation can be absorbed by the notch 14, and the surface layer portion 13 can be easily curved. In FIG. 3, the same numbers are assigned to the same structures as those in the above embodiment.

  Moreover, in the manufacturing method of this embodiment, although the thing which makes the width | variety of the surface layer part 5 and the back layer part 6 equal (for example, both shall be 5 mm) was shown, the width | variety of the surface layer part 5 is the width | variety of the back layer part 6. The width of the back layer portion 6 may be larger than the width of the surface layer portion 5. In the manufacturing method of the present embodiment, the curved surface 10 is a regular arc having a radius of 5 mm, for example, but the radius is not particularly limited, and the shape of the curved surface 10 is an arc shape in an ellipse. It may be made to become.

  Furthermore, in the manufacturing method of this embodiment, what showed the decorative sheet 3 sticking to the surface 4 side and the edge part 7 side of the wooden substrate 2 was shown, However, the decorative sheet 3 is stuck also to the back surface 9. Also good. According to this, since the whole wooden board | substrate 2 is coat | covered with the decorative sheet 3, even if it is a case where it uses in the state where all the surfaces were exposed, the aesthetics of the decorative board 1 can be maintained. In other words, the use of the decorative board 1 can be further expanded.

It is a perspective part which shows an example of the decorative board manufactured by the manufacturing method of this invention. It is explanatory drawing which shows the manufacturing method of the decorative board which is one Embodiment of this invention. It is explanatory drawing which shows the other example of a decorative board. It is explanatory drawing which shows the manufacturing method of the decorative board which is a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,11 Decorative plate 2,12 Wood substrate 3 Decorative sheet 4 Front surface 5,13 Surface layer portion 6 Back layer portion 7 End portion 9 Back surface 10 Curved surface 14 Notch

Claims (4)

An attaching process for attaching a decorative sheet to the surface of the wooden substrate;
The width in the thickness direction of the wooden substrate is divided into a surface layer portion and a back layer portion, only the end portion side of the back layer portion is cut out, and between the end portions of the back layer portion formed after cutting. A cutting step of forming a convex curved surface on the end surface of the back layer portion so that the width gradually increases from the boundary between the surface layer portion and the back layer portion toward the back surface of the wooden substrate;
A bending step of bending the end portion side of the surface layer portion in the back surface direction and contacting the curved surface;
A method for producing a decorative board, comprising: an adhesion step of adhering an end portion side of the surface layer portion and the curved surface through an adhesive.   2. The method for manufacturing a decorative board according to claim 1, further comprising a trimming step of cutting off a front end side of the surface layer portion protruding from the back surface of the wooden substrate after the bonding step.   The said decorative sheet stuck in the said sticking process is made into a sheet | seat which has elasticity, The manufacturing method of the decorative board of Claim 1 or Claim 2 characterized by the above-mentioned.   4. The sealing agent is applied to the adherend surfaces before adhering the end portion side of the surface layer portion and the curved surface in the bonding step. The manufacturing method of the decorative board as described in any one of these.

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