JP4472125B2 - Decorative product manufacturing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of manufacturing a decorative article in which a veneer sheet is bonded to a plastic or metal base body. More specifically, the present invention relates to a technique for bonding a veneer sheet to a base body.
[0002]
[Prior art]
As a method for imparting a high-class feeling to a portion constituting an interior panel in an automobile, a panel of an audio device, a box portion of a music box, or the like, there is a method of finishing these portions into a wood grain pattern. However, if wood products are used for these parts, only the parts with a beautiful grain can be used, and the cost increases remarkably.
[0003]
Therefore, a method of bonding a veneer sheet to the surface of a wooden base body can be considered. In this method, after the adhesive is applied to the base body, the base body is covered with a veneer sheet, and then, the iron is applied from above the veneer sheet to bring the veneer sheet into close contact with the surface of the base body. Glue. Therefore, since only the veneer sheet can be seen from the surface, it is possible to manufacture a decorative product having a good appearance regardless of the quality of the wood grain surface of the base body.
[0004]
[Problems to be solved by the invention]
However, in the conventional method for manufacturing an ornamental product, the work can be efficiently performed only by adhering the projecting plate sheet to the flat portion of the base body. In order to cover it, it is necessary to wrap the iron to the side of the base body, so there is a problem that it takes considerable time to iron.
[0005]
Also, if the surface of the base body has irregularities, it is necessary to carefully apply the iron so that the veneer sheet does not float on the irregularities. is there.
[0006]
Furthermore, the wooden base body has a problem that it is difficult to make an arbitrary shape inexpensively.
[0007]
In view of the above problems, an object of the present invention is to provide a method for producing a decorative product that can satisfactorily bond a veneer sheet to a plastic or metal base body surface without trouble. .
[0008]
[Means for Solving the Problems]
In order to solve the above problems, in the method for manufacturing a decorative article according to the present invention, a first step of applying an adhesive to a base body made of plastic or metal, and a first step of covering the base body with a veneer sheet. Among the decompression chamber and the pressurization chamber that are partitioned in advance by the step 2 and the deformable pressure sheet , the decompression chamber is decompressed in a state in which the work having the base body covered with the protruding plate is disposed in the decompression chamber. On the other hand, by supplying heated air into the pressurizing chamber at a high pressure from a heated air supply device provided with a heater, the pressurizing sheet is deformed toward the work, and the protruding plate sheet is moved to the base body surface side. And a third step of sticking in a state of being in close contact with the substrate.
[0009]
This invention is effective when the area | region which adhere | attaches the said veneer sheet | seat of the said base body has a solid shape or an uneven | corrugated pattern.
[0010]
In the present invention, in producing a decorative article in which the veneer sheet is bonded to the surface side of the base body, after the air is removed from between the veneer sheet and the base body in the decompression chamber, the veneer sheet and the base body are brought into close contact with each other. A pressing process is performed on the surface of the veneer sheet from the pressure chamber via the pressure sheet. Alternatively, pressurize the surface of the veneer sheet from the pressure chamber through the pressure sheet, and reduce the pressure in the decompression chamber to remove the air between the veneer sheet and the base body so that the veneer sheet and the base body are in close contact with each other Let As a result, the pressure sheet is deformed according to the shape of the surface of the base body, and the protruding plate sheet is uniformly pressed along the surface of the base body. Therefore, unlike the method of ironing the veneer sheet and the base body by ironing from the surface to the side surface of the veneer sheet, it does not take much time to bond the veneer sheet from the surface of the base body to the side surface. Moreover, since the base body is made of plastic or metal, it can be manufactured at a low cost by any method such as molding.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
A method for manufacturing a decorative article to which the present invention is applied will be described with reference to the drawings.
[0012]
1A, 1B, and 1C are process diagrams illustrating a method for manufacturing a decorative article according to the present embodiment. 2A, 2B, 2C, and 2D are process cross-sectional views showing processes performed in a vacuum press machine among the processes performed in this manufacturing method. FIG. 3: is process sectional drawing which shows the process performed after taking out a workpiece | work from a vacuum press machine among each process performed with this manufacturing method.
[0013]
In FIG. 1A, in this embodiment, a veneer sheet 20 is adhered to the surface side of a base body 10 made of a plastic molded product such as an ABS resin or a metal molded product made of magnesium or aluminum to give a wood grain pattern. The base body 10 is for manufacturing panels such as OA equipment such as car interior and exterior panels and parts, audio equipment, personal computers, etc., light electrical appliances, steel furniture, musical instruments, kitchen equipment, construction members, etc. Although 11 is a flat surface, it has an R shape from the surface 11 to the side surface 12. The veneer sheet 20 is obtained by adhering a back sheet 22 made of a nonwoven fabric or paper to a veneer 21 obtained by slicing a natural wood thinly to a thickness of, for example, 0.25 mm, and matches the size of the base body 10. Is cut to a predetermined size.
[0014]
In adhering the veneer sheet 20 configured as described above to the base body 10, in this embodiment, first, as shown in FIG. 1B, the thermosetting or thermoplastic material is applied from the surface 11 to the side surface 12 of the base body 10. Adhesive 30 is applied (first step). As the adhesive 30, urethane adhesive, epoxy adhesive, rubber adhesive, melamine adhesive, phenol adhesive, acrylic adhesive, cyano adhesive, and the like can be used.
[0015]
Next, as shown in FIG. 1C, the protruding plate sheet 20 is put on the surface side of the base body 10, and in this state, the surface of the protruding plate sheet 20 is lightened along the surface 11 and the side surface 12 of the base body 10. Trace and perform alignment (second step).
[0016]
Next, as shown in FIG. 2A, the work 1 with the protruding plate sheet 20 covered on the surface side of the base body 10 is put on a vacuum press 50. In this vacuum press machine 50, a decompression chamber 51 and a pressurization chamber 52 are vertically formed through a deformable pressure sheet 53 made of a silicon rubber sheet or the like, and is formed on a stage 54 in the decompression chamber 51. Then, the work 1 covered with the protruding plate sheet 20 is placed on the surface 11 side of the base body 10. In the decompression chamber 51, a number of suction holes 551 are formed on the lower surface 55, and these suction holes 551 are connected to a vacuum pump 57 via a common suction path 56. In addition, a heating air supply device 58 incorporating a heater 581 is connected to the pressurizing chamber 52, and this heating air supply device 58 can supply the air heated by the heater 581 into the pressurizing chamber 52 at a high pressure. It is.
[0017]
In the vacuum press 50 having such a configuration, the third step is performed. In the present embodiment, as the third step, first, as shown in FIG. 2B, the vacuum pump 57 is operated to decompress the interior of the decompression chamber 51. At this time, the pressure sheet 53 is in a state of moving downward. As a result, air is removed from between the protruding plate sheet 20 and the base body 10, and the pressure sheet 53 is pulled toward the decompression chamber 51 to cover the protruding plate sheet 20. It will be in the state closely_contact | adhered to the surface 11 and the side surface 12 of the body 10. FIG.
[0018]
Next, heated compressed air is supplied from the heated air supply device 58 into the pressurized chamber 52. As a result, as shown in FIG. 2 (C), the pressure sheet 53 swells toward the decompression chamber 51 and comes into close contact with the surface 11 of the protruding plate sheet 20 with a pressure of, for example, several tens of kg / cm ^2. The protruding plate sheet 20 is uniformly pressed toward the base body 10, and the protruding plate sheet 20 is uniformly pressed against the surface 11 and the side surface 12 of the base body 10. In addition, the adhesive 30 is heated to a temperature of, for example, 100 ° C. or more via the pressure sheet 53 between the protruding plate sheet 20 and the base body 10. Therefore, the protruding plate sheet 20 and the base body 10 are bonded via the adhesive 30 in a pressurizing time of about several minutes.
[0019]
In the third step, depending on the shape of the base body 10, first, heated air is supplied to the pressurizing chamber 52 to press the surface of the protruding plate sheet 20 through the pressurizing sheet 53, In this state, the inside of the decompression chamber 51 may be decompressed to remove air from between the protruding plate sheet 20 and the base body 10 so that the protruding plate sheet 20 and the base body 10 are brought into close contact with each other.
[0020]
Next, as shown in FIG. 2D, both the decompression chamber 51 and the pressurization chamber 52 are opened to the atmosphere, and the pressurization sheet 53 is moved upward, and then the workpiece 1 is taken out from the vacuum press machine 50. .
[0021]
Thereafter, as shown in FIG. 3, the surface 21 of the veneer sheet 20 is subjected to a coloring treatment so as to make use of the grain of natural wood, if necessary, and then, for example, a urethane-based or polyester-based transparent coating agent 40. Then, the coating agent 40 is solidified. As a result, the work 1 becomes a decorative article in which the veneer sheet 20 having a wood grain pattern is bonded to the surface of the base body 10. Moreover, if the surface of the coating agent 40 is grind | polished and buffed as needed, the workpiece | work 1 will be a decorative article by which the surface was mirror-polished.
[0022]
Since the workpiece in which the projecting plate sheet 20 is bonded to the surface 11 side of the base body 10 in this way, only the projecting plate sheet 20 can be seen from the surface 11, so that the decoration with a good-looking grain regardless of the material of the base body 10 Available as a product.
[0023]
Further, in this embodiment, even if the veneer sheet 20 is pasted from the surface 11 to the side surface 12 of the base body 10 to give a three-dimensional and three-dimensional grain pattern, the veneer sheet 20 and the base body 10 in the decompression chamber 51 After the air is removed from the space between the veneer sheet 20 and the base body 10, the surface 11 of the veneer sheet 20 is pressed with a heating sheet. Therefore, unlike the method of bonding the protruding plate sheet 20 and the base body 10 by ironing from the surface 11 to the side surface 12 of the protruding plate sheet 20, the bonding of the protruding plate sheet 20 from the surface 11 to the side surface 12 of the base body 10 is performed. There is no need to spend a lot of time.
[0024]
Furthermore, according to the method of the present embodiment, there is an advantage that it can be manufactured at low cost even when only one decorative article is manufactured instead of mass production.
[0025]
Furthermore, since the base body 10 is a plastic molded product or a metal molded product, unlike the wooden base body, there is an advantage that an arbitrary shape can be manufactured at low cost.
[0026]
In the above embodiment, a plastic molded product is used as the base body 10. However, the base body 10 may be made of metal such as aluminum, aluminum alloy, magnesium, or magnesium alloy. In this case, if the base body 10 made of magnesium or the base body 10 made of magnesium alloy is used, the weight can be further reduced as compared with the case where the base body 10 made of aluminum or aluminum alloy is used. it can.
[0027]
Moreover, in the said form, it was the structure which sticks the veneer sheet | seat 20 from the surface 11 of the base body 10 to the side surface 12, and gives a three-dimensional and three-dimensional grain pattern, However, The uneven | corrugated pattern is attached to the surface of the base body 10. Even if it is, if this invention is applied, the veneer sheet | seat 20 can be adhere | attached according to the uneven | corrugated pattern, without enormous effort.
[0028]
【The invention's effect】
As described above, in the present invention, in manufacturing a decorative article in which a veneer sheet is bonded to the surface side of the base body, the air is removed from between the veneer sheet and the base body in the decompression chamber, And pressing the surface of the veneer sheet with a heating sheet. Therefore, unlike the method of bonding the protruding plate sheet and the base body by ironing from the surface to the side surface of the protruding plate sheet, it does not take much time to bond the protruding plate sheet from the surface of the base body to the side surface.
[Brief description of the drawings]
FIGS. 1A, 1B, and 1C are process diagrams showing a method for manufacturing a decorative article to which the present invention is applied.
2 (A), (B), (C), and (D) are process cross-sectional views showing processes performed in a vacuum press machine among processes performed in a method for manufacturing a decorative article to which the present invention is applied. is there.
FIG. 3 is a process cross-sectional view illustrating a process performed after a work is taken out from a vacuum press machine among processes performed in a method for manufacturing a decorative article to which the present invention is applied.
[Explanation of symbols]
1 Workpiece (decoration)
DESCRIPTION OF SYMBOLS 10 Base body 11 Base surface 12 Base body side face 20 Veneer sheet 21 Veneer plate 22 Back surface sheet 30 Adhesive 40 Coating agent 50 Vacuum press machine 51 Depressurization chamber 52 Pressurization chamber 53 Pressurization sheet 54 Stage 55 Lower surface 56 of the decompression chamber Common suction path 57 Vacuum pump 58 Heated air supply device 551 Suction hole 581 Heater

Claims (2)

A first step of applying an adhesive to a base body made of plastic or metal, a second step of covering the base body with a veneer sheet, and a pressure reduced in advance by a deformable pressure sheet Among the chamber and the pressurizing chamber, the decompression chamber is depressurized in a state in which the work having the base body covered with the projecting plate is disposed in the decompression chamber, and the heating chamber is heated from the heated air supply device provided with a heater. And a third step of attaching the projecting plate sheet in close contact with the surface of the base body by deforming the pressure sheet toward the work by supplying the air at high pressure. A method of manufacturing a decorative product. The method for manufacturing a decorative article according to claim 1, wherein a region of the base body to which the protruding plate sheet is bonded has a three-dimensional shape or an uneven pattern.

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