JPS61297144A - Method of treating terminal of interior finish material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for treating the ends of an interior material in which a core material is covered with a skin material.

(Prior Art) Interior materials made by covering a rigid core material with a skin material are widely used in various products including automobile interior materials such as door trims and garnishes.

By the way, such interior materials are often used in such a way that the terminal is exposed, and therefore it is necessary to make the terminal look good.

Therefore, conventionally, as in the case of the interior material shown in FIG. Alternatively, the ends 52a of the skin material 52 attached to the core material 50 may be folded back and wrapped around the ends 54 of the core material 50 to cover the ends, such as the interior material shown in FIG. 8. It was being processed.

However, the former terminal treatment method has the problem that when the skin material shrinks or peels off, the ends of the core material are exposed and become unsightly.
There is a problem in that many operations are required, such as cutting the skin material, wrapping it, and gluing or tacking the ends of the skin material.

(Problems to be Solved by the Invention) The present invention aims to solve the above-mentioned problems, and provides a terminal processing method that can obtain interior material terminals with good appearance through simple operations.

(Means for Solving the Problems) The method for treating the ends of interior materials according to the present invention involves making the ends of the core material protrude from a convex vacuum forming mold, and sucking air along the back surface of the ends of the core material. A gap is provided between the back surface of the core material and the surface of the convex vacuum mold, the core material is placed on the top of the convex vacuum mold, and then the skin material is vacuum formed from the core Murakami. be.

(Function) In the nearly closed space formed by the skin material and the surface of the convex vacuum mold, air in the space flows along the back surface of the end of the core material and between the back surface of the core material and the surface of the convex vacuum mold. The pressure is reduced by being sucked into the convex vacuum forming mold through the gap. As a result, the skin material adheres closely to the surface of the core material. At that time, since the end of the core material protrudes from the convex vacuum forming mold and the vacuum suction force is generated along the back surface of the end of the core material, the skin material is folded back to the back surface of the end of the core material. It will be molded.

(Embodiment) FIGS. 1 and 2 relate to an embodiment of the present invention, in which FIG. 1 is a sectional view of a convex vacuum forming die before vacuum forming, and FIG. 2 is a sectional view of a convex vacuum forming die during vacuum forming, respectively.

In the figure, reference numeral 10 denotes a convex vacuum forming mold, which has an upper part 12 projecting outward, and has a protrusion 14 on the upper surface for supporting a core material to be described later. 16 is a vacuum suction hole, which is connected to a vacuum forming pump (not shown).

20 is a core material constituting the interior material. The core material 20 is made of a rigid material that does not deform during vacuum forming and is capable of maintaining the shape of the interior material, such as metal, hard plastic, or harborboard, and is molded or shaped in advance into the shape of a desired interior material such as a door trim. has been done. The core material 20 and the vacuum forming mold 10 are arranged so that when the core material 20 is placed on the vacuum forming mold upper part 12, the terminal 18 of the core material 20 protrudes from the mold lO, and the back surface of the core material 20 is in contact with the vacuum. It is configured to form a gap 22 between the mold surface and the mold surface having the molding suction port 16a.

24 is an adhesive such as a hot melt adhesive applied to the back surface 18a of the end of the core material.

26 indicates the skin material, which is a thermoplastic resin sheet alone or a cushion material laminated on the back surface of the thermoplastic resin sheet;
Alternatively, it may be made of a cloth material with reduced air permeability.

Next, the terminal processing method of the present invention will be explained.

First, the core material 20 is placed on the mold IO. Then, as described above, the core end 18 protrudes from the mold upper part 12, and a space is formed on the back side of the core end 18, and then the core surface and the vacuum suction port 1 are formed.
A gap 22 is formed between the mold surface and the mold surface 6a.

Next, a plasticized skin material 26 is placed over the core material 20 and the mold 10.

Then, a substantially closed space 28 is formed between the skin material 26 and the surface of the convex vacuum forming mold 10. Thereafter, vacuum forming is performed by a conventional method. Due to this vacuum forming, the air in the space 28 moves along the back surface 18a of the end of the core material, passes through the gap 22, and is sucked through the vacuum forming suction hole 16a. Therefore, the pressure inside the space 28 is reduced, whereby the skin material 26 comes into close contact with the core material 20 and the surface of the convex vacuum forming mold IO. At that time, air is sucked along the back surface 18a of the end of the core material as described above, so the skin material 26 is folded back toward the back surface 18a side so as to wrap around the end of the core material 18, and the folded portion is attached to the adhesive 24. It is adhesively fixed to the back surface 18a of the end of the core material.

In order to improve folding of the skin material 26 at the core end 18, the gap 22a between the back surface 18a of the core end 18a and the surface of the upper part 12 of the convex vacuum forming mold is made small.
It is preferable to increase the vacuum suction force along a. Further, in order to more reliably integrate the core material 20 and the skin material 26, it is preferable to apply an adhesive to the surface of the core material 20 in advance.

After vacuum forming in this manner, the skin material 26 is cut at a predetermined position 30 near the back surface of the end of the core material. FIG. 3 is a sectional view of the interior material which has been terminal-treated in this way, and FIG. 4 is a perspective view. Incidentally, the end portion of the skin material 26 may be further tacked to the back surface 18a of the end of the core material.

FIG. 5 is a sectional view showing another embodiment. In this figure, 32 is a convex vacuum forming mold, 33 is a protrusion for supporting the core material,
34 is a vacuum-formed suction hole. This convex vacuum forming mold 32
A core material 36 having an attachment clip 36a is placed on top, and a skin material 40 is vacuum-formed in the same manner as described above, and the skin material 40 is folded back to the back side of the core material terminal 38 at the core material terminal 38. . Note that 42 is a gap between the back surface of the core material 36 and the surface of the convex vacuum forming mold 32, and 44 is an adhesive. FIG. 6 is a sectional view of the obtained interior material.

(Effects of the Invention) As described above, according to the present invention, the skin material at the end of the interior material is folded back to the back side of the end of the core material, which improves the appearance of the end and prevents the core material from shrinking due to shrinkage of the skin material. This has the effect of eliminating the risk of the end of the material being exposed. Furthermore, the end treatment can be performed simultaneously with the covering of the core material with the skin material, making one operation extremely simple and rational.

[Brief explanation of the drawing]

Figures 1 to 4 relate to one embodiment of this invention, with Figure 1 being a cross-sectional view of the convex vacuum forming mold before vacuum forming, Figure 2 being a cross-sectional view of the convex vacuum forming mold during vacuum forming, and Figure 3 being the interior material with the end treated. A cross-sectional view of
FIG. 4 is a perspective view of the interior material shown in FIG. 3, FIGS. 5 and 6 relate to other embodiments of the present invention, and FIG. 5 shows a convex vacuum forming mold for explaining vacuum forming. The sectional view, FIG. 6 is a sectional view of an interior material subjected to end treatment, and FIGS. 7 and 8 are sectional views of an interior material for explaining conventional examples. 10 Convex vacuum forming mold, 12 Upper part, 18 Core material end 20 Core material, 22 Gap, 26 Skin material Patent applicant Inoue MCP Co., Ltd. Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure S

Claims (1)

[Claims] The end of the core material is made to protrude from the convex vacuum molding mold, and a gap is provided between the back surface of the core material and the surface of the convex vacuum molding mold for sucking air along the back surface of the end of the core material. A method for processing the ends of interior materials, characterized by placing the material on the top of a convex vacuum forming mold, and then vacuum forming a skin material on top of the core material.