JP2016078270A - Manufacturing method of decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a decorative sheet capable of executing all processes up to folding-back work from the formation of a cutting groove by using a device.SOLUTION: In a manufacturing method of a decorative sheet 10 having a decorative groove 50 on a surface, the manufacturing method of the decorative sheet comprises steps of: sticking a decorative sheet 12 on a surface of a base material 11 of the decorative sheet; forming a straight line-shaped cutting groove 32 on a reverse surface of the base material; coating hot melt 20 on its cutting groove; gradually deeply forming the depth of a decorative groove every time when a plurality of rolls respectively press the decorative groove, by pressing the plurality of rolls 30a, 30b and 30c in order from the decorative sheet side of a position for forming the cutting groove while moving the base material of sticking the decorative sheet in the groove direction of the cutting groove; and hardening an adhesive of a hot melt type.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for producing a decorative board having a decorative groove on its surface.

  Some decorative plates used for doors and wall materials have a decorative groove on the surface. Such decorative grooves are made by attaching a decorative sheet made of a synthetic resin film, reinforced paper, or a sheet of synthetic resin film and reinforced paper to the surface of the base material of the decorative board, and cutting the back surface of the base material. In many cases, a cut groove is provided and a decorative sheet of the cut groove portion is folded back (for example, see Patent Document 1).

  FIG. 8 is a cross-sectional view illustrating a state in which a decorative groove is formed from the conventional cutting groove disclosed in Patent Document 1. Here, when the cross section of the decorative groove 150 is formed in a square shape, the complicated cutting groove 132 is formed for the purpose of bringing the base material 101 and the decorative sheet 102 into close contact with the bottom of the decorative groove 150.

  However, in such a manufacturing method, the cutting groove 132 must have a complicated shape, and the decorative sheet 102 may be broken when folded, so that the folding operation is performed by human hands. . Although not shown, the back surface of the substrate 101 may be fastened with an adhesive tape or the like so that the folded portion does not open after folding.

JP 2011-247086 A

  In view of such a situation, an object of the present invention is to provide a method for manufacturing a decorative board capable of performing all the steps from the formation of a cutting groove to the folding operation using an apparatus.

  The decorative board manufacturing method of the present invention is a decorative board manufacturing method having a decorative groove on the surface, the step of applying a decorative sheet to the surface of the base material of the decorative board, and the linear cutting on the back surface of the base material A step of forming a groove, a step of applying a hot-melt type adhesive to the cutting groove, and forming a plurality of rolls while moving the base material with a decorative sheet in the groove direction of the cutting groove. A process in which the depth of the decorative groove is gradually increased each time a plurality of rolls press the decorative groove, and a hot melt type adhesive is pressed. And a step of curing.

  Here, it is preferable that the plurality of rolls have a configuration in which the diameter increases in the order in which the decorative sheet is pressed.

  Moreover, when the base material to which the decorative sheet is attached is moved in the groove direction of the cutting groove, it is preferable to move one side surface of the base material while being in contact with a reference gauge parallel to the groove direction of the cutting groove.

  According to the present invention, the shape of the cutting groove is simple, and the folding operation is gradually performed step by step, so that all operations for manufacturing the decorative plate can be performed by the apparatus without breaking the decorative sheet. There is an effect.

It is a figure explaining the manufacturing process of a decorative board briefly. It is a figure explaining the state which formed the cutting groove, Comprising: (a) is a side view, (b) is a top view. It is a figure explaining the state which apply | coated the hot melt, Comprising: (a) is a side view, (b) is a top view. It is a side view explaining the state in which the decorative groove was formed. It is a side view explaining the position of a roll. It is a top view explaining the position of a roll and the moving direction of a decorative board. It is AA sectional drawing of FIG. 6, aa sectional drawing, BB sectional drawing, bb sectional drawing, CC sectional drawing, cc sectional drawing. It is sectional drawing explaining a mode that a decorative groove is formed from the conventional cutting groove.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  First, the manufacturing process of a decorative board is demonstrated. FIG. 1 is a diagram for briefly explaining a manufacturing process of a decorative board, and shows the processes in the order of (a) to (e). The manufacturing process of the decorative board 10 includes: (a) attaching a decorative sheet 12 made of a synthetic resin film, a reinforced paper, or a sheet obtained by combining a synthetic resin film and a reinforced paper to the surface of the base material 11; 11 is provided with a cutting groove 32, (c) a hot melt type adhesive (hereinafter referred to as hot melt 20) is applied to the cutting groove 32, and (d) a plurality of rolls 30a, 30b, 30c. The decorative sheet 12 is used to press (e) the decorative groove 50 is formed, and the hot melt 20 is cured to complete the decorative board 10. These details will be further described with reference to the drawings.

  2A and 2B are diagrams for explaining a state in which cutting grooves are formed, in which FIG. 2A is a side view and FIG. 2B is a plan view. The cutting groove 32 has a linear shape, and is formed by cutting the back surface of the substrate 11 (the surface on which the decorative sheet 12 is not attached) with the cutter 31. In the cutting groove 32, two grooves 32 a having the same depth as the thickness of the substrate 11 are cut in parallel, and a portion sandwiched between the two grooves 32 a has a desired thickness from the back surface side of the substrate 11. The shape has been cut into two. The desired thickness here is about １ ／ of the thickness of the substrate 11. In addition, since this remaining part becomes a base material of the bottom face part of the decorative groove 50 when the decorative groove 50 is completed, it shall be referred to as a bottom base material 11a here. And since the shape of the cutting groove 32 is simple, such a cutting operation can be performed using an apparatus.

  3A and 3B are diagrams for explaining a state in which hot melt is applied, in which FIG. 3A is a side view and FIG. 3B is a plan view. FIG. 4 is a side view for explaining a state in which a decorative groove is formed. Note that the hot melt 20 is applied to all the grooves 32a, but when the decorative sheet 12 is folded, all the cutting grooves 32 are provided with the cutting grooves 32 so that the hot melt 20 does not jump out from the back side of the base material 11. A recess for allowing the hot melt 20 to escape is provided on the side of the groove 32a.

  The hot melt 20 is applied to all the grooves 32a of the cutting grooves 32 along the grooves. Then, as shown in FIG. 4, when the folding is completed, the hot melt 20 is accommodated in the concave portion on the back surface side of the base material 11. Here, if a large amount of hot melt 20 is applied, it will pop out from the back surface of the base material 11 and it will take time to remove it, so it is necessary to apply an appropriate amount. Also, with such a hot melt 20 application method, the decorative sheet 12 and the base material 11 can be sufficiently bonded when the folding is completed, and the decorative groove 50 having a square cross section is formed.

  Next, the folding operation of the decorative sheet 12 will be described. FIG. 5 is a side view for explaining the position of the roll, and FIG. 6 is a plan view for explaining the position of the roll and the moving direction of the decorative board. 7 is a cross-sectional view taken along line AA, cross-section aa, cross-section BB, cross-section bb, cross-section CC, and cc cross-section of FIG. 6 and 7, the holding roll 30d is omitted. The folding operation is performed by the plurality of rolls 30a, 30b, and 30c pressing the position of the decorative groove 50 from the decorative sheet 12 side while moving the decorative plate 10 in the groove direction of the cutting groove 32.

  In this embodiment, there are three rolls that press the position of the decorative groove 50 to form the decorative groove 50 deeply in stages, and press the roll 30a, the roll 30b, and the roll 30c in this order as the decorative plate 10 moves. It shall be. Since these rolls 30a, 30b, and 30c may finally be pressed to a position where the back surface of the bottom substrate 11a is the same as the back surface of the substrate 11, the rolls 30a, 30b, and 30c are shown in FIG. As shown in [AA], [BB], and [CC], the base material 11a is moved by about 1/3 of the total movement distance (groove depth) of the base material 11a. You can do that. Of course, when n rolls are provided, the bottom substrate 11a may be moved by approximately 1 / n of the total moving distance (groove depth).

  For these rolls 30a, 30b and 30c, as shown in FIG. 5, a restraining roll 30d is provided on the back side of the base material 11 of the decorative board 10. That is, the bottom substrate 11a is pressed by sandwiching the decorative plate 10 between the holding roll 30d and the rolls 30a, 30b, and 30c. At this time, the restraining roll 30d has more installation places than the rolls 30a, 30b, and 30c. For example, when there are three rolls that fit into the decorative groove 50, the restraining roll 30d may be installed at about ten places.

  When the decorative plate 10 is moved, the decorative plate 10 may be moved while being in contact with the reference gauge 35 parallel to the groove direction of the cutting groove 32 or the decorative groove 50 so that the decorative plate 10 can move straight. . At this time, the decorative groove 50 is deeply formed stepwise by the rolls 30a, 30b, and 30c, so that the bottom surface base material 11a is pressed stepwise, thereby reducing the width of all the grooves 32a of the cutting groove 32. Then, the base 11 on the side in contact with the reference gauge 35 does not move in the direction orthogonal to the decorative groove 50, but the base 11 on the side not in contact with the reference gauge 35 and the bottom base 11 a It moves toward the gauge 35. Therefore, since the position of the decorative groove 50 also moves stepwise toward the reference gauge 35, it is necessary to calculate the amount of movement in advance and determine the planar position of the rolls 30a, 30b, 30c. Actually, it is necessary to install the roll 30a, the roll 30b, and the roll 30c in the order of approaching the reference gauge 35.

  When the rolls 30a, 30b, 30c that press the decorative groove 50 are all provided at the same height, the roll diameter is the total movement distance (groove) of the bottom base 11a in the order of the roll 30a, the roll 30b, and the roll 30c. What is necessary is just to enlarge by about 1/3 of (depth). Further, the diameters of the rolls 30a, 30b, and 30c are all the same, and the height positions of the shafts in the order of the roll 30a, the roll 30b, and the roll 30c are set to about 1/3 of the total moving distance (groove depth) of the bottom substrate 11a. It can be handled by increasing the value one by one. In addition, in FIG. 7 [aa], [bb], and [cc], the example which enlarges the diameter of a roll in order is shown.

  If the decorative sheet 12 is folded back as described above, the decorative plate 10 may be poured, so that the square-shaped decorative groove 50 can be formed without tearing the decorative sheet 12 by a device instead of a human hand. .

DESCRIPTION OF SYMBOLS 10,100 Decorative plate 11,101 Base material 11a Bottom base material 12,102 Decorative sheet 20 Hot melt 30a, 30b, 30c Roll 30d Retaining roll 31 Cutter 32, 132 Cutting groove 32a All grooves 35 Reference gauge 50, 150 Cosmetic groove

Claims (3)

A method of manufacturing a decorative board having a decorative groove on the surface,
Applying a decorative sheet to the surface of the base material of the decorative plate;
Forming a linear cutting groove on the back surface of the substrate;
Applying a hot melt type adhesive to the cutting groove;
While moving the base material to which the decorative sheet is attached in the groove direction of the cutting groove, a plurality of rolls are sequentially pressed from the decorative sheet side at the position where the cutting groove is formed, and a plurality of the A step in which the depth of the decorative groove is deeply formed step by step each time the roll presses the decorative groove;
Curing the hot melt type adhesive;
A method for producing a decorative board, comprising:   The method for manufacturing a decorative board according to claim 1, wherein the plurality of rolls increase in diameter in order of pressing the decorative sheet.   When the base material with the decorative sheet attached is moved in the groove direction of the cutting groove, the one side surface of the base material is moved while being in contact with a reference gauge parallel to the groove direction of the cutting groove. The manufacturing method of the decorative board according to claim 1 or 2.

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