JPH0313079Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to lining materials for vehicle interiors such as automobile door trims and ceiling lining materials.

(Prior art) In the case of vehicle interior lining materials used for automobile door trims and other applications, the core plate formed from fiberboard, paperboard, etc. is coated with lining material through a pad material. In order to enhance the decorative effect, a synthetic resin sheet with good workability and wipeability and a synthetic resin sheet of a different color from the aforementioned synthetic resin sheet made of cloth or other arbitrary materials with excellent decorative properties have already been bonded and integrated. However, conventional lining materials for vehicle interiors of this type are usually made by directly welding the joining part of a synthetic resin sheet to the joining part of a sheet of a different color from the synthetic resin sheet to integrate the joining part. .

(Problem that the invention aims to solve) However, in such conventional vehicle interior lining materials, if the synthetic resin sheet is white or light colored and opaque, and the other sheet is darker than this synthetic resin sheet, the welding may occur. In some areas, the color of the part to be joined of the sheet stands out on the part to be joined of the synthetic resin sheet,
In particular, when a vinyl chloride resin sheet is used as the synthetic resin sheet and a fabric woven with polyester dyed yarn is used as the other sheet, the dye from the fabric transfers to the vinyl chloride resin sheet and the finish of the welded area deteriorates. There is a problem that the image becomes bad and the appearance is damaged.

(Means for Solving the Problems) The present invention solves the above-mentioned problems and is made of a composite material of a light-colored opaque synthetic resin sheet and a sheet of a different color from the synthetic resin sheet, which has an excellent car interior decoration effect. A lining material for vehicle interiors that has been completed for the purpose of being used as a lining material for vehicle interiors, in which the joining part of a light-colored opaque synthetic resin sheet is welded to the joined part of a sheet of a different color from the synthetic resin sheet. In materials,
The present invention is characterized in that a laminated synthetic resin thin layer consisting of a heat bonding synthetic resin thin layer and a polyolefin synthetic resin thin layer is interposed between the bonding portion and the bonded portion.

(Example) Next, the present invention will be described as an automobile door trim in which the surface of a molded base material 11 as shown in FIGS. 1 and 2 is coated with a vehicle interior lining material according to the present invention via a pad material 12. To explain this in detail as an example, 1 is a light-colored opaque synthetic resin sheet that can be high-frequency welded, such as a white vinyl chloride resin sheet, and the synthetic resin sheet 1 covers the main portion of the molded base material 11. A notch 2 for joining the ornament is formed in a part of the ornament. Reference numeral 3 denotes a sheet of a different color from the synthetic resin sheet 1, such as a cloth woven using red-dyed polyester yarn, and the sheet 3 is used as an ornament. The peripheral edge is overlapped as the joining part 3a on the back side of the joining part 1a at the peripheral edge of the notch 2 of the synthetic resin sheet 1, and the synthetic resin sheet 1 and the sheet 3 are joined together by this overlapped part 3a. The working part 1a and the joining part 3a are welded by high frequency welding or the like. Reference numeral 4 denotes a laminated synthetic resin thin layer interposed between the joining part 1a and the joined part 3a to form a welded part, and the laminated synthetic resin thin layer 4 is made of polyolefin-based synthetic resin such as modified polypropylene resin. Both sides of the thin layer 5 or the bonding portion 1
A thin layer 6 of a synthetic resin for thermal adhesion such as vinyl chloride resin is laminated on one side in contact with a.

(Function) In this structure, since the light-colored opaque synthetic resin sheet 1 and the sheet 3 of a different color from the synthetic resin sheet 1 are joined and integrated, it has an excellent car interior decoration effect. This is similar to conventional interior lining materials for vehicles of this type, but in the present invention, the light-colored opaque synthetic resin sheet 1 and the sheet 3, which has a different color from the synthetic resin sheet 1, are joined and integrated. The synthetic resin thin layer 6 for thermal bonding, which is formed by overlapping the bonding portion 1a of the synthetic resin sheet 1 on the bonding portion 3a of No. 3 and interposed therebetween, has a melting point and a softening point. It is strong because it is welded by laminated synthetic resin thin layer 4 with polyolefin synthetic resin thin layer 5 having different properties, and moreover, the plasticizer in the synthetic resin thin layer 6 for thermal bonding is activated during welding. Even in this case, the polyolefin synthetic resin thin layer 5 does not fuse with the plasticizer, and therefore, the color of the joined part 3a does not stand out on the surface of the joined part 1a at the joined part, and in particular,
Even if the sheet 3 is a fabric using polyester-based dyed yarn, a coloring agent from which the dye easily leaches is used, and the synthetic resin sheet 1 is a vinyl chloride resin sheet to which the coloring agent easily transfers, polyolefin-based material may be used. The thin synthetic resin layer 5 prevents the migration of the colorant, resulting in an extremely good finish at the welded area. Moreover, the polyolefin synthetic resin thin layer 5
The laminated synthetic resin thin layer 4, in which the synthetic resin thin layers 6, 6 for thermal adhesion are laminated on both sides, has high strength itself and does not cause the delamination phenomenon that occurs when the intermediate layer is made of paper material. Therefore, the strength of the joint is extremely high. Therefore, such a vehicle interior lining material is produced by overlapping the joining part of a light-colored opaque synthetic resin sheet with the joining part of a sheet of a different color from the synthetic resin sheet, and welding it together with the pad material and the substrate as necessary. It can be easily obtained by simply interposing a heat-adhesive synthetic resin tape and a polyolefin synthetic resin tape between the joining part and the part to be joined when joining them together, so it is used for conventional joining parts. Another advantage is that it does not require the conventional decorative molding material and can be provided at low cost.

(Effects of the Invention) As is clear from the above description, the present invention has a light-colored opaque synthetic resin sheet and a sheet of a different color from the synthetic resin sheet. A thin layer of resin and a thin layer of polyolefin synthetic resin are joined together by welding with a thin layer of synthetic resin interposed between them, so it is superior to conventional vehicle interior linings of this type in terms of both strength and decoration. It has the advantage of being superior to other materials, easy to manufacture, and inexpensive, and has extremely great practical value.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an embodiment of an automobile door trim using the present invention, and FIG. 2 is a partially cutaway perspective view showing an enlarged main part thereof. 1: Light-colored opaque synthetic resin sheet, 1a: Joining section, 3: Sheet with a different color from the synthetic resin sheet, 3
a: part to be joined, 4: laminated synthetic resin thin layer, 5: polyolefin synthetic resin thin layer, 6: synthetic resin thin layer for thermal bonding.

Claims (1)

[Claims for Utility Model Registration] 1. Joining portion 1 of light-colored opaque synthetic resin sheet 1
In a vehicle interior lining material in which a is integrally welded to a joined part 3a of a sheet 3 having a different color from the synthetic resin sheet 1, there is a thermal adhesive between the joined part 1a and the joined part 3a. A lining material for a vehicle interior, characterized in that a laminated synthetic resin thin layer 4 consisting of a synthetic resin thin layer 6 and a polyolefin synthetic resin thin layer 5 is interposed. 2. The interior lining for a vehicle according to claim 1, wherein the synthetic resin sheet 1 is a vinyl chloride resin sheet, and the sheet 3, which has a different color from the synthetic resin sheet 1, is a fabric using dyed polyester yarn. Material.