JPS6137116B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an interior board in which a core board is covered with a skin material with a pad material.

Interior panels, in which a pad material such as polyurethane foam is laminated to the back side of a skin material such as a vinyl chloride resin sheet, are bonded to a core board, and are widely used as interior panels for automobiles because they do not wrinkle easily. However, when this type of interior board is manufactured, the edge of the skin material with pad material is folded back to the back of the core board and the ends are processed, resulting in a sharp finish due to the formation of a bulge on the edge of the core board. There was a problem that this terminal processing required a lot of effort.

The present invention has been completed with the aim of producing an interior panel in which a core plate is covered with a skin material with a pad material that solves the above-mentioned problems. A pad material in which the skin material with the pad material is placed on it, and then the skin material with the pad material is pressed and adhered to the surface of the core board using an upper mold, and the free end of the skin material with the pad material is folded back to the back surface of the core board to perform terminal treatment. In a method for manufacturing an interior board in which a core plate is covered with a skin material, when the skin material with a pad material is bonded to the core board using the upper die, the free end of the skin material with a pad material is attached to the edge of the core board. By applying pressure with the chevron-shaped ridges provided on either the upper mold or the lower mold on the outside of the edge, a linear crushed portion is provided in the pad material, and the linear crushed portion is used as a folding line to form the skin with the pad material. It is characterized in that the free end of the material is folded back to the back side of the core plate, and below:
Embodiments of the present invention will be described in detail with reference to illustrated process diagrams.

Reference numeral 1 denotes a lower mold having a shape that allows the core plate 2 to be set therein, and a core plate surface material such as hardboard, insulation board, synthetic resin plate, etc. is molded in advance into the desired shape in the mold part 1a of the lower mold 1. The core plate 2 is then set.
Reference numeral 3 denotes a skin material with a pad material to be covered by the core plate 2, and the skin material 3 with a pad material is made by applying a pad material 4 such as polyurethane foam to the back side of a thermoplastic synthetic resin sheet 5 such as a vinyl chloride resin sheet. The pad material 4 was laminated and formed into a desired shape using a vacuum forming method so as to be slightly larger than the core plate 2, and an adhesive was applied to the back surface of the pad material 4 as necessary, and then set in the lower mold 1. The core plate 2 is placed on the core plate 2 so that the free end portion 3b is supported by the horizontal surface portion 1b of the lower mold 1. Reference numeral 6 denotes an upper mold that pairs with the lower mold 1, and the upper mold 6 has a chevron-shaped raised portion located outside the edge of the core plate 2 set in the mold portion 1a of the lower mold 1. 7 is provided. Then, the skin material 3 with pad material is placed in the above state on the core plate 2 set in the lower mold 1, and then the upper mold 6 is placed.
is lowered and the upper mold 6 is used to bond the pad material-attached skin material 3 to the surface of the core plate 2 under heat and pressure. At the same time, since the upper die 6 is provided with a chevron-shaped raised portion 7 located outside the edge of the core plate 2, the skin material 3 with pad material is bonded. As shown in FIG. 2, the pad material 4 corresponding to the outer side of the edge of the core plate 2 is crushed into a valley shape, and a linear crushed portion 3c is formed at the base of the free end portion 3b. , the upper mold 6 is raised to remove the mold, and then the free end of the skin material 3 with pad material attached to the surface of the core plate 2 is folded back to the back surface of the core plate 2 for end treatment. The linear crushing portion 3c provided on the material 4 prevents the pad materials from being compressed together at the folded portion, making the folding work easier, and as shown in FIG. 3, the free end of the thermoplastic synthetic resin sheet 5 Since the folded portions on the sides appear as sharp folded lines 3c', the end portions have a beautiful finish.Moreover, since the thermoplastic synthetic resin sheet 5 side does not become thinner, there is no possibility of grain flow or whitening. Therefore, an interior panel with an excellent decorative effect can be obtained. Furthermore, since the forming of the linear crushed portion 3c described above can be performed simultaneously when the skin material 3 with pad material is bonded to the core plate 2 under pressure, the process can also be omitted, making it suitable for mass production. In the above embodiment, the chevron-shaped raised portion 7 is provided on the upper mold 6, but even if it is provided on the lower mold 1, it is possible to form the linear crushed portion 3c in which the pad material 4 is crushed into a valley shape. , the chevron-shaped raised portion 7 may be provided on either the upper mold 6 or the lower mold 1,
Further, instead of one linear crushed portion 3c, a plurality of linear crushed portions 3c may be arranged in parallel.

As explained in the above embodiments, the present invention involves processing the free end of a skin material with a pad material attached to a core plate using an upper mold and a lower mold by folding it back to the back surface of the core plate. A chevron-shaped ridge provided on the upper mold or the lower mold when the skin material with pad material is bonded to the core plate under pressure to the pad material at the free end of the skin material with pad material corresponding to the edge of the core plate. By forming a linear crushed part with a section, the folded part can be easily bent, increasing the work efficiency and achieving a beautiful finish, which is different from conventional pad materials. This is an extremely significant contribution to the development of the industry as it solves the problems of manufacturing methods for interior panels in which a core board is covered with a skin material.

[Brief explanation of the drawing]

Figures 1, 2, and 3 are process explanatory diagrams showing embodiments of the present invention, Figures 4, 5, 6, and 7.
8 and 8 are partially cutaway front views showing another embodiment in which a skin material with a pad material is bonded to a core plate under pressure using an upper die, and a linear crushed portion is simultaneously formed. 1: Lower mold, 2: Core plate, 3: Skin material with pad material,
3b: free end portion, 3c: linear crushed portion, 3c': folded line, 4: pad material, 6: upper mold, 7: chevron-shaped raised portion.

Claims (1)

[Claims] 1 Place the skin material with pad material on the core plate set in the lower mold, and pressurize and adhere the skin material with pad material to the surface of the core plate using the upper mold, and remove the looseness of the skin material with pad material. In a method for manufacturing an interior board in which a core plate is covered with a skin material with a pad material, in which the ends are folded back to the back side of the core board and the skin material with a pad material is applied to the core board, when the skin material with a pad material is bonded to the core board under pressure using the upper die. By pressing the free end of the skin material with the pad material with a chevron-shaped ridge provided on either the upper mold or the lower mold outside the edge of the core plate, a linear crushed portion is formed in the pad material. A method for producing an interior board in which a core plate is covered with a skin material with a pad material, characterized in that the free end of the skin material with a pad material is folded back to the back surface of the core board using the linear crushed portion as a folding line. .