JPS58119817A - Manufacture of interior material for vehicle and the like - Google Patents

Abstract

PURPOSE:To obtain an interior material for vehicles, etc. using the heat inertia of thermoforming without requiring an additional preheater, by transferring a core material formed into a prescribed shape by a thermoformer immediately to a vacuum forming mold, and joining a skin material to the core material. CONSTITUTION:A raw fabric such as resin felts, glass fiber felts, or the like is thermoformed by a thermoforming machine 1 into a prescribed shape, and the resulting core material 2 is tranferred to the vacuum mold 3. At the same time, the ends of the skin material 4 of a synthetic resin or the like are clamped at a clamping position 6, and the skin material 4 is heated by a movable heater 7. After the thermoformed core material 2 having enough heat inertia is placed on the vacuum mold 3, the vacuum mold 3 is moved together with the core material 2 to the clamping position, and a vacuum pump 3a is operated. Consequently, the skin material 4 is drawn onto the thermoformed core material 2, and they are joined by the adhesive constitutent present therebetween to provide the intended interior material 11.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing interior materials for vehicles, etc. More specifically, the present invention relates to a method for manufacturing interior materials for vehicles, etc., and more specifically, it is used for ceilings, doors, etc. of vehicles, and is made by combining a core material made of resin felt, glass felt, etc. The present invention relates to a method of manufacturing an interior material for a vehicle, etc., in which materials are laminated and formed into a desired shape.

In conventional manufacturing methods for vehicle interior materials, when a thermoforming core material such as Regisifeltow glass fiber felt is used as the core material, pressure molding is performed using a thermoforming mold with a mold temperature of around 200°C. In order to use the thermoformed core material, it was difficult to mold the skin material, which is sensitive to high heat, using the same thermoforming mold, and further to laminate the core material and the skin material in a bonded state. Therefore, in order to form a core material and a skin material using the same thermoforming mold and bond them together, the thermoforming core material is formed under the processing conditions of the core material, which is warmer than the mold and at a high temperature. The thermoformed core material is cooled and temporarily stored in a state that maintains the shape of the core material, and then the core material and the skin material are crimped under the skin material processing condition where the mold temperature of the thermoforming mold is low. I am doing it.

However, the thermoformed core material must be temporarily stored, and if the thermoformed core material is completely cooled during the crimping process of the skin material, it must be reheated to the specified temperature before it can be used again. For this reason, a thermocompression bonding type is required, and when this thermocompression bonding type is used, there is a risk of damaging the surface of the skin material, and it also has disadvantages that affect the gloss and grain flow of the skin material, etc. The top and bottom abutting surfaces of the thermocompression mold require precision, making the mold expensive, and the work is complicated, inefficient, and uneconomical.

The object of the present invention is to quickly and quickly form interior materials by laminating a skin material on the thermoformed core material in a bonded state by utilizing the residual heat of the thermoformed core material in accordance with the molding process of the thermoformed core material. It can be manufactured efficiently, and interior materials can be manufactured at significantly lower equipment costs than conventional equipment costs, and the pressure bonding force between the thermoformed core material and skin material of the manufactured interior materials is improved. This invention provides a method for manufacturing interior materials for vehicles, etc., which can produce interior materials of uniform quality, and will become clear from the detailed description below with reference to the drawings.

1 to 4 schematically show an embodiment of the method for manufacturing interior materials for vehicles, etc. according to the present invention, and in the plant schematic diagram shown in FIG. 1, reference numeral 1 denotes a thermoforming mold. Using this thermoforming mold 1, a raw material such as resin felt or glass fiber felt is heated and pressed into an arbitrary shape under optimal molding conditions to form the thermoforming core material 2 (see Figure 2). .

The thermoforming core material 2 formed by the thermoforming mold 1 is immediately transferred to an adjacent vacuum molding mold 3.

Further, in parallel with the formation of the thermoformed core material 2, the skin material 4 made of synthetic resin or the like is sequentially supplied one by one from the movable table 5 to the clamp position 6, and at this clamp position 6, the skin material 4 is
When the end of the movable table 5 is clamped, the movable table 5 returns to its original position. The skin material 4 at the clamp position 60 is heated by the movable heater 7 at an appropriate heating temperature and heating time.

After placing the thermoforming core material 2 with sufficient residual heat in the vacuum forming mold 3, the vacuum forming mold 3 is moved to the clamping position 6 of the skin material 4.
(see FIG. 3), and the vacuum pump 3a of the vacuum forming mold 3 is activated. Incidentally, when the vacuum pump 3a is operated, one end or both ends of the skin material 4 are unclamped at an appropriate timing.

When the vacuum pump 3a of the vacuum forming mold 3 is operated, the skin material 4 made of a synthetic resin sheet etc. is adsorbed to the thermoforming core material 2 because the thermoforming core material 2 is made of a breathable material such as felt. The thermoformed core material 2 and the skin material 4 are joined by the adhesive property between the thermoformed core material 2 and the skin material 4, and a fourth
An interior material 11 having a skin material 4 bonded to the surface of a thermoformed core material 2 as shown in the figure is formed. In addition, if an adhesive layer such as a hot melt sheet is used on the back side of the skin material 4, it is possible to use a cloth surface material with breathability on the surface of the skin material, and the adhesive effect can be further ensured. I can do it.

Since the thermoforming core material 2 is forcibly cooled by the operation of the vacuum pump 3a of the vacuum mold 3, the thermoforming core material 2 and the skin material 4 are
If the temperature of the thermoforming core material 2 is higher than a predetermined temperature when laminating the thermoforming core materials 2 and After forcibly cooling the inside to a predetermined temperature, the vacuum forming mold 3 is moved to the clamping position 6 of the skin material 4.

Next, one embodiment of the present invention will be described by citing specific numerical values.

Resin felt was used as the raw material for the thermoforming core material 2. The raw material of the resin felt had a basis weight of 1.45 Kp/m' and was molded at a molding pressure of 5 K9 for 80 seconds in the thermoforming mold 3 maintained at 200°C. /a& to form a thermoformed core material 2.

Immediately transfer this thermoforming core material 2 to a vacuum molding mold 3 (mold temperature 30°C).
I moved it to . The surface temperature of the thermoformed core material 2 30 seconds after this movement was 110°C.

Next, the vacuum forming mold 3 was moved to the clamping position 6 of the skin material 4, and the vacuum pump 3a was operated for 30 seconds to obtain an interior material 11 in which the skin material 4 was joined to the thermoformed core material 2. In this case, the surface layer of the skin material 4 is made of vinyl chloride 0:25111. A laminate of urethane foam 3ul as the intermediate layer and hot melt sheet (polyamide e-olefin) 50P as the bottom layer was used, and the temperature on the surface side of the skin material 4 before joining was 70°C.

The above is an outline of one embodiment of the method for manufacturing interior materials for vehicles etc. according to the present invention. According to this method, it is possible to bond the thermoformed core material to the skin material immediately after the molding process, In addition, the residual heat of the thermoformed core material can be used to bond the material, and as conventional thermocompression bonding molds are not used, equipment costs are low and costs can be reduced. There is no need for temporary storage after molding, and there is no waste of storage space or storage time, allowing interior materials to be manufactured quickly and efficiently.Also, thermoforming core materials do not require a compression process using a conventional thermocompression mold. A uniform pressure bonding force can be applied to the entire joint surface between the surface material and the surface material, and therefore a high quality interior material with a uniform pressure bonding force and a beautiful surface can be obtained.

[Brief explanation of drawings]

Figures 1 to 4 each schematically show an embodiment of the method for manufacturing interior materials for vehicles, etc. according to the present invention, and Figure 1 shows the layout of a plant for carrying out the manufacturing method of the present invention. 2 is a schematic cross-sectional explanatory view showing the manufacturing process of a thermoforming core material using a thermoforming mold, and FIG. 3 is a cross-sectional explanatory view showing a state in which the vacuum molding mold is placed at the clamp position of the skin material. Fourth
The figure is an explanatory cross-sectional view of one embodiment of an interior material in which a skin material is bonded to a thermoformed core material. In the figure, 1... aging mold, 2... thermoforming core material, 3...
・Vacuum forming mold, 3a... Vacuum pump, 4... Skin material, 5... Moving table, 6... Clamping position of skin material, 7... Moving heating heater, 11... Interior material .

Claims (1)

[Claims] In a method for producing an interior material for a vehicle or the like in which a skin material is laminated on a core material and formed into a desired shape, an original fabric of the core material is heated and formed to form a thermoformed core material, and the aged core material is formed into a thermoformed core material. is moved to a vacuum forming mold, the vacuum forming mold in which the thermoforming core material is arranged is operated at the clamping position of the skin material, and the skin material is applied to one side of the thermoforming core material using the residual heat of the thermoforming core material. A method for manufacturing interior materials for vehicles, etc., characterized by joining.