JP2552713B2 - Method for manufacturing plate-shaped molded product with sheet-shaped decorative member - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for producing a plate-shaped molded article with a sheet-shaped decorative member such as a vehicle interior material, a building interior material, and various decorative exterior materials.

(Prior Art) JP-A-60-48324 is an example of a method for producing such a molded article.
As shown in Japanese Patent Publication No. JP-A-2003-13869, a breathable sheet-shaped decorative member is set in a partitioned region formed by a partition wall at a predetermined portion of the molding surface of a vacuum molding die, and then the entire molding surface is made of thermoplastic resin. Alternatively, there is a method for producing a plate-shaped molded product with a sheet-shaped decorative member, which comprises placing a heat-softenable plate-shaped base material in a heated state and vacuum forming.

In such a manufacturing method, as shown in FIG. 5, the sheet-shaped decorative member is set by engaging the edge portion 3a with the top of the partition wall 2 forming the partition area 1 at a predetermined portion of the molding surface. As a locking means of the edge 3a of the decorative member 3, as shown in FIG.
There is a method of piercing and locking the edge part 3a of the decorative member 3 and fixing it with the locking clip 4 as shown in FIG.

(Problems to be Solved by the Invention) By the way, when each of the above-mentioned locking means is adopted in order to set the decorative member in the partitioned area in such a manufacturing method, the partition wall 2 of the mold in the plate-shaped molded product obtained is obtained.
As shown in FIG. 8, the portion corresponding to the groove 5a is a groove portion 5a which is largely opened to the surface side corresponding to the partition wall 2 and the groove portion 5a.
The edge 3a of the decorative member 3 is folded back inside, and its end is positioned outward and visually recognized from the outside, which greatly reduces the commercial value of the plate-shaped molded article as an interior material or exterior material. .

Therefore, an object of the present invention is to prevent the above-mentioned decrease in commercial value by considering the means for setting the decorative member in the partitioned area in such a manufacturing method.

(Means for Solving the Problem) The present invention provides a method for producing a plate-shaped molded article with a sheet-shaped decorative member, which comprises an elastic sheet or a decorative member obtained by sticking a skin on one surface of the sheet as the decorative member. Adopted, the edge portion of the decorative member is elastically abutted against the inside of the partition wall to stand up along the inside of the partition wall, and the member is set in the partitioned area. .

(Operation / Effect of Invention) According to such a manufacturing method, the edge portion of the decorative member does not cover the top of the partition wall from the inside to the outside thereof, and the edge portion of the decorative member is formed at a portion corresponding to the partition wall of the molded product. The groove formed by the base material and the base material has a narrow opening because there is no folding back of the edge portion, and the elastic member that constitutes the decorative member restores its thickness by releasing from pressing and closes the opening. As in the state, the end of the edge of the decorative member faces inward and cannot be seen from the outside. Therefore, the commercial value of the molded product does not decrease due to the groove formed in the portion corresponding to the partition wall of the obtained molded product.

(Example) Hereinafter, the present invention will be described with reference to the drawings. FIGS. 1A to 1D show a manufacturing process of an example of the manufacturing method of the present invention. In this manufacturing process, a well-known vacuum mold
10A is used, and the molding die 10A has a molding surface 11 and an exhaust chamber 12
It has a large number of exhaust holes 13 communicating with the. The exhaust chamber 12 communicates with a vacuum pump via an exhaust pipe (not shown). Further, in the molding die 10A, a partition wall 14 standing upward is provided at a predetermined portion of the molding surface 11, and a portion 11a surrounded by the partition wall 14 is partitioned from the other portion 11b of the molding surface 11. It has become an area.

In this manufacturing method, the plate-shaped base material 20a is formed by adhering a skin 22 on one surface of a substrate 21 made of a thermoplastic synthetic resin, and the sheet-shaped decorative member 20b is a thin cushion pad 23 made of polyurethane having open cells. The cloth 24 is attached to one surface of the cloth. These base material 20a and member 20b
In order to perform vacuum forming using, the base material 20a is heated to a temperature at which it can be formed as shown in FIG. 1 (a), and the decorative member 20b is attached to the forming surface of the forming die 10A as shown in FIG. 1 (b). 11
In the partitioned area 11a. Next, the base material 20a in the heated state is set on the setting surface 11 on which the decorative member 20b is set.
Placed on the entire surface of, and the compressed air box 10B shown in FIG. 1 (c) is set to perform compressed air vacuum forming. The arrow in the figure indicates the exhaust direction. As a result, the base material 20a forms the molding surface 11
In addition to being molded into a shape corresponding to the above, the decorative member 20b is attached to a predetermined portion of the base material 20a via a mounting agent applied in advance to obtain a molded product shown in FIG. 1 (d).

Thus, in such a manufacturing method, the decorative member 20b is set in the partitioned area 11a by the means shown in FIG. 2 or FIG. The means shown in FIG. 2 is a case where the corners of the decorative member 20b may have a large radius of curvature.
The edge portion 25 is bent to stand up and is elastically abutted on the inside of the partition wall 14 by the elastic force of the pad 23. Decorative members
The edge of the edge 25 of 20b is flush with the top of the septum 14. The means shown in FIG. 3 is for reducing the radius of curvature of the corner portion of the decorative member 20b. In this case, the pad 23
A notch 23a is provided on the inner side corresponding to the corner of the. Other states are the same as the means shown in FIG.

By adopting these setting means, the molded product immediately after molding will be in the state shown in FIG. 4 (a) and then in the state shown in FIG. 4 (b). That is, an outwardly opening groove C is inevitably formed at a portion corresponding to the partition wall of the molding die 10A on the surface of the molded product, but the edge portion 25 of the decorative member 20b is not folded back inside the groove C, The end of the rim 25 faces inward. Immediately after molding, the edge portion 25 is compressed in the thickness direction as shown in FIG. 4 (a),
The groove C has a large opening, but when the rear edge 25 is restored in the thickness direction, the opening of the groove C becomes narrow and
The fluff of the cloth 24 is recovered and the opening of the groove C is almost closed as shown in FIG. Therefore, the obtained molded product does not impair the commercial value of the interior material and the exterior material due to the groove C inevitably formed.

[Brief description of drawings]

1 (a) to 1 (d) are schematic views showing a manufacturing process according to an example of the manufacturing method of the present invention, and FIG. 2 is a partial sectional view showing an example of a set state of decorative members in the manufacturing method, and FIG. The figure is a partial cross-sectional view showing another example of the same set state, FIG. 4 (a) is an enlarged cross-sectional view immediately after molding of the groove portion of the molded product obtained by the same manufacturing method, and FIG. 4 (b) is the same. A sectional view of the groove after that, FIG. 5 is a sectional view showing a set state of the decorative member in the conventional manufacturing method, and FIGS. 6 and 7 are partially enlarged sectional views showing different means in the set state, respectively. The figure is a sectional view corresponding to FIG. 4 (b) of the groove portion of the molded product obtained by the conventional method. Explanation of code 10A …… Molding die, 11 …… Molding surface, 11a …… Section area, 14…
… Partition wall, 20a …… Plate-shaped substrate, 20b …… Decorative material, 25
…… Edge, C …… groove.

Claims (1)

(57) [Claims] 1. A breathable sheet-shaped decorative member is set in a partitioned area formed by a partition wall at a predetermined portion of a molding surface of a vacuum molding die, and then the entire molding surface is made of a thermoplastic or thermosoftening material. In a method for producing a plate-shaped molded article with a sheet-shaped decorative member, which comprises placing a plate-shaped substrate in a heated state and vacuum forming, an elastic sheet or a skin is attached to one surface of the sheet as the decorative member. The decorative member is made of, and the edge of the decorative member is elastically abutted against the inner side of the partition wall to stand up along the inner side of the partition wall and the member is set in the partitioned area. And a method for producing a plate-shaped molded article with a sheet-shaped decorative member.