JP2998909B2 - Manufacturing method of plate-shaped decorative material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a plate-like decorative material used as an interior material for vehicles, houses, and the like.

[0002]

2. Description of the Related Art As one type of plate-like decorative material, there is a type in which a skin material is adhered to one side surface of a substrate having a groove at a predetermined portion.
No. 037 and a vehicle door trim as shown in FIGS. The board 30 of this door trim
A general area 31 and an ornament area 32 are formed on one side surface, and a groove 33 having a considerable depth is provided to clarify the boundary between these areas. And
The skin material adhered to the substrate 30 is pushed into the groove,
A so-called grained structure is formed.

[0003] By the way, a known vacuum forming method is used to attach a skin material to one side of such a substrate. However, since the wood grain structure of the groove cannot be formed only by the vacuum force,
At the same time as the vacuum forming, as shown in FIGS. 6A and 6B, a portion corresponding to the groove 33 of the skin material 34 is pressed into the groove 33 by using a pressing jig 35 to manufacture a wood grain structure. The method has been adopted.

[0004]

However, in the above-mentioned manufacturing method, the surface material pushed into the groove of the substrate by using the pressing jig has a high stretching state and a large restoring force. 6C, the cover pad constituting the skin material is torn as shown in FIG. 6C, and the skin material rises from the groove. In particular, if there is a variation in the shape of the substrate, a displacement between the substrate and the jig, or the like, the skin material cannot be adhered in the groove with a uniform pressing force by the pushing jig, which may cause peeling of the adhesive.

When the width of the pressing jig is large, it is necessary to accurately position the substrate and the pressing jig.
On the other hand, in the case where the width of the pushing jig is narrow, as shown in FIG. 7, the skin material adheres to the bottom of the groove portion, and the side surface floats and is not adhered to the bottom portion of the groove portion. The grained structure cannot be formed. In this case, since a large pressing force of the pushing jig is applied only to the portion of the skin material that comes into contact with the bottom of the groove, the foam layer of the skin material is crushed, and air is generated from the foam layer. , And a convex portion due to an air pocket appears on the surface layer of the skin material, which may impair the design. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above problems and to provide a method of manufacturing a plate-like decorative material having a wood grain structure in which a skin material is securely and well bonded to a groove of a substrate.

[0006]

In order to solve the above-mentioned problems, according to the manufacturing method of the present invention, a skin material is adhered to one side of a substrate having a groove at a predetermined position, and the skin material is formed on the substrate. In a method of manufacturing a plate-like decorative material in which a portion facing the groove is pressed into the groove by using a pressing jig to obtain a plate-like decorative material, a pressing portion of the pressing jig is provided at a bottom of the groove. An elastically deformable tubular member having a cross-sectional shape corresponding to the cross-sectional shape is formed, and by applying gas pressure to the inside of the tubular member, the outer periphery of the tubular member is pressed against the skin material, and the skin material is pressed against the inner surface of the groove. It is characterized by being crimped on.

[0007]

According to the method of manufacturing a plate-like decorative material of the present invention, the pressing portion of the pushing jig is formed of a tubular member that can be elastically deformed, and gas pressure can be applied to the inside of the tubular member. Because of this, the tubular member is deformed by gas pressure so that the skin material is pressed against the bottom of the groove of the substrate, and a wood grain structure in which the skin material is securely pressed not only on the bottom of the groove but also on the side surface of the groove can be formed. . Also, even if there is a variation in the shape of the substrate and the displacement between the substrate and the pushing jig, the pressing portion of the pushing jig is deformed according to the shape of the bottom of the groove, so these variations and displacement are absorbed. A uniform pressing force can be applied to the skin material of the groove.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. First, a pushing jig 10 of the present invention will be described with reference to FIGS. The pressing jig 10 includes a jig main body 11 and a tubular member 12 functioning as a pressing portion attached to a lower end thereof. The jig body 11 is a metal plate having a width of 2 to 3 mm using brass or the like.
Is made of an elastic material such as rubber having an outer diameter of 5 to 6 mm and an inner diameter of 4 to 5 mm. The jig body 11 is integrally formed with a blower tube 13 for sending gas into the tubular member 12. The material of the blower tube 13 may be appropriately selected, such as metal or rubber.

Next, a skin material 22 is adhered to a substrate 20 provided with a groove portion 21, and a grained structure is formed using the pressing jig 10 shown in FIGS. 1 and 2 to produce a plate-like decorative material. How to do it. FIG. 3 shows a conventional jig 10 in which a skin material 22 such as a PVC material is adhered to a wood-based or resin-based substrate 20 by applying a conventionally known vacuum forming method, and at the same time, the skin material 22 is pushed into the groove 21. Indicates the state of being pushed in. Here, the tubular member 12 is deformed so as to expand by sending pressure of a gas such as air through the blower tube 13, and presses the skin material 22 against the groove portion 21 to be pressed. In this embodiment, the air fed into the tubular member 12 is warm air of about 80 to 100 ° C. so that the rubber tubular member 12 is easily deformed.

According to the method of manufacturing the plate-like decorative material by sticking the substrate 20 and the skin material 22 and forming the wood-grained portion, the skin material 22 is not only formed at the bottom of the groove 21 but also at the groove 2.
It is possible to form a grained structure that is securely pressed against both side surfaces. Also, even if there is a variation in the shape of the substrate 20 and a positional shift between the substrate 20 and the pressing jig 10,
The tubular member 12 which is the pressing portion of the pushing jig 10 is
Since it is deformed in accordance with the shape of the bottom portion 1, it is possible to absorb these variations and displacement and apply a uniform pressing force to the skin material 22 of the groove portion 21. Therefore, since the pressing force of the pressing jig 10 is not applied to only a part of the skin material, the foam layer of the skin material is not crushed and air is not generated from the foam layer, and the air layer is formed on the surface layer of the skin material. The projections do not appear and impair the design of the plate-shaped decorative material. Furthermore, if the gas sent into the tubular member 12 is hot air, the temperature of the skin material 22 at the time of bonding rises, so that the residual stress of the skin material 22 is reduced, and a plate-like decorative material to which the skin material 22 is well bonded is provided. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a pushing jig used in the present invention.

FIG. 2 is a cross-sectional view of the pushing jig shown in FIG.

FIG. 3 is a vertical sectional side view of a grained portion of a plate-shaped decorative material for explaining a manufacturing method of the present invention.

FIG. 4 is a front view of a door trim substrate to be manufactured according to the present invention.

FIG. 5 is a vertical cross-sectional view taken along the line AA of FIG. 4;

FIG. 6 is a process chart showing a conventional manufacturing method.

FIG. 7 is a longitudinal sectional side view corresponding to FIG. 3 showing a conventional manufacturing method.

[Explanation of symbols]

10, 35: pushing jig, 11: jig body, 12: tubular member, 13: blower tube, 20: substrate, 21, 33: groove, 22, 34: skin material, 30: door trim substrate, 31
... General area, 32 ... Ornament area.

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B32B 31/00-31/30 B32B 3/30 B29C 65/00-65/82 B60R 13/02

Claims (1)

(57) [Claims] 1. A skin material is adhered to one side surface of a substrate having a groove at a predetermined portion, and a portion of the skin material facing the groove is pushed into the groove by using a pushing jig and adhered. In the method for manufacturing a plate-shaped decorative material to obtain a plate-shaped decorative material, the pressing portion of the pressing jig is formed of an elastically deformable tubular member having a cross-sectional shape corresponding to a cross-sectional shape of a bottom portion of the groove portion. A method of manufacturing a plate-shaped decorative material, comprising applying gas pressure to the inside of the member to press the outer periphery of the tubular member against the skin material, and pressing the skin material onto the inner surface of the groove.