JPS58188623A - Preparation of molding - Google Patents

Abstract

PURPOSE:To prepare a molding capable of fuilding up a beautiful looking external surface by a method wherein resin tapes compatible with molding material are stuck in advance to portions to mount the moldings on metallic core material and the molding material is extruded on the tapes and stuck to them to form in a unitary body with the moldings. CONSTITUTION:Resin tapes compatible with the molding material are stuck in advance to portions to mount a molding such as rubber for metallic core material, shock absorbing material of synthetic material etc., weatherstrip, etc. The metallic core material is supplied into an extrusion molding machine, the molding material is extruded in the desired shape and at the same time stuck to the resin tape to form the metallic core material in a unitary body with the molding. Then, the desired molding is prepared through cooling treatment.

Description

[Detailed description of the invention] The present invention is a cushioning material made of materials such as rubber and synthetic resin.

The present invention relates to a method of manufacturing a molding that integrally adheres a molded product such as a weather strip (hereinafter simply referred to as a "buffer material").

Conventionally, cushioning materials are made using an adhesive that is pre-applied to the surface of a flat metal plate that serves as the core material, is baked with high frequency, and then is softened in a preheater after the flat metal plate is bent and formed into a predetermined cross-sectional shape. By adhering the cushioning material at the same time as extrusion molding, it is possible to attach it integrally to the metal core material. When the adhesive sticks, or when it softens in the preheater, it accumulates on the edge and bulges out from the edge when the cushioning material is pressed against it. For I!, many units of one root are required, which is undesirable, and for I!, when the adhesive is baked with a high-frequency heating machine, the organic solvent contained in the adhesive is scattered into the atmosphere, which affects the human body. There are also drawbacks.

It is an object of the present invention to provide a method of manufacturing a molding that is improved to eliminate such drawbacks.

That is, in the method for manufacturing a molding according to the present invention, a predetermined surface of the metal core material (i.e., a resin tape compatible with the forming material of the adhesive molded product) is used to attach the molded product during extrusion molding. It is designed to be

This will be explained below based on the illustrated embodiments.

In the illustrated embodiment, the metal core material A, which is a flat belt-like material, is unrolled from a rolled state, and the subsequent necessary processing is performed continuously. The metal core material A wound into a roll is passed through the uncoiler l into a belt-shaped flat plate (see Figure 2).
Pay out from.

It is supplied to the r-brush pasting machine 2. The tape pasting machine is equipped with a large resin tape 2& molded from a resin such as polyvinyl chloride that is compatible with the cushioning material B molded from a resin such as polyvinyl chloride in the post-processing phase, and it is attached to the back side (= adhered Attach the outer surface (2) of the metal core material A with adhesive 2m'.When attaching it, apply resin tape 2a on almost the entire surface or a part of the surface only where the security material B is attached. Can be pasted.

Further, as this resin tape, a color tape can be used when forming a colored surface other than cushioning material B on the surface of the molding. The color tape should stick out from the attachment point of #Placement B (: pasted, product @C
It is arranged so that the colored side is placed on the market. This color tape 2
When using m, in order to prevent wavy wrinkles from occurring from the edge of the color tape during roll forming in the subsequent process, the metal core material A is placed near the sickle at both longitudinal ends of the metal core material A that comes into contact with the forming roll. It is best not to apply tape (see 3rd section)
(see figure).

Immediately after pasting the resin tape 2a, the metal core material M can be fed into the cold roll forming machine 3 (0) In the illustrated embodiment, after pasting the resin tape 2a, the tape pasting machine 2ζ: Separate 4 : The equipment can be attached with Rokuho tape 2b to protect the colored surface and the bare surface of the molding other than where the I1 value material B is attached from being scratched.
As the tape 2b, it is preferable to use a colored transparent tape that is incompatible with the molded resin of the cushioning material B, such as polyethylene, and to make it easier to peel off after the fact, the adhesive 2m' on which the resin tape 2a is attached is used. It is best to apply adhesive 2b' with low adhesive strength (see Figure 4).These tapes 2m and 2b
The adhesion of C: is carried out by the tape pasting machine 2, but since the strip-like flat metal core material A fed from the uncoiler 1 is sent to the tape pasting machine 2, the tapes 2m and 2b are attached to the desired @
(It can be applied accurately and in a J11 area. After binding these tapes 2m and 2b, the metal core material is fed into the cold roll forming machine 3 and bent into a predetermined shape (see Figure 5). ).

At that time, even if both stretched edges of the metal core material A contact the forming roll 3, they do not contact the resin tape 2a, so the resin tape 2 does not become wavy or twisted. .

Predetermined cross-sectional shape (: The molded metal core material A is.

The buffer material B is fed into an extrusion molding machine 4 which molds the cushioning material B in a continuous state. The resin material used in T & includes rubber, synthetic resin, etc., and is at least compatible with the resin tape 21, and when it is extruded into the specified shape of the cushioning material B, it is simultaneously welded to the resin tape 2a. It is integrally attached to the thin metal core material A (see Fig. 6). The metal core material A equipped with the cushioning material B is cooled in a water tank 5 and finally cut to size with a clipper 6 to be manufactured into a product as a molding.

Note that a part of the cushioning material B may be formed into a shape other than the predetermined shape so that it does not adhere to the surface of the book or molding, and may be peeled off together with the protective tape 2b. : Just add a cutting line (Happy 6)
(See figure on the right).

The retainer 1If-p2b is also peeled off before the molding is installed on the vehicle.

When manufacturing moldings using C2 in this way,
In order to be able to efficiently obtain a large number of moldings through continuous processing, the resin tape 2a is attached to a flat metal core material. It can be applied efficiently and accurately.

However, it is possible to attach the resin tape 2 to the metal core material A that has been formed into a predetermined cross-sectional shape in advance, and the metal core material 9 is formed.
It is also possible to paste the material after cutting it to two predetermined dimensions.

As described above, the method for manufacturing a molding according to the present invention (
= Rubber with compatible resin tape.

A lick for welding and fixing molded products made of synthetic resin, etc.

Since the adhesive does not bulge out and the mounting surface of the molded product can be regulated, it can be formed into an attractive exterior surface without impairing decorativeness.

[Brief explanation of drawings]

Figure 1 shows the entire apparatus to which the molding manufacturing method of the present invention (2) is applied; Figures 2 and 3.4;
Figures a, b, 5 and 6 are cross-sectional views showing the processing state in each step, and Figure 7 is a perspective view showing the state in which the protective tape is removed before the molding is attached. A: Metal core material, B: Molded product, 2a: Resin tape, 2m'
Adhesive, 2b: Protective tape, 2b': Adhesive.

Claims (5)

[Claims] (1) A resin tape that is compatible with the molding material is applied in advance to at least the part of the metal core material where a molded product made of rubber, synthetic resin, etc. is to be attached, and a molded product is formed on the tape-applied surface of the metal core material. C: A method of manufacturing a molding characterized by attaching the molded product integrally by extruding the material. (2) Attach the above resin tape to a flat metal core C:
Claim 1 in which the metal core material is formed into a predetermined transverse m shape 6: after being bent and formed, the molded product is integrally attached.
! 2. A method for manufacturing a molding according to item 1. (3) The method for manufacturing a molding according to claim 1, wherein a wide colored tape forming a colored surface is attached as the resin tape to a part other than the part where the molded product of the metal core material is attached. (4) The scope of the patent claims that after the surface of the molded product other than the attachment point is attached with a protective tape, the core material to which the resin tape is attached is subjected to processing in a subsequent process. A method for manufacturing a molding according to item 1 or 2. (5) The method for manufacturing a molding according to claim 4, wherein the adhesive tape is attached with a lower adhesive force than the color tape.