JP3168369B2 - Manufacturing method of weather strip for automobile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a weather strip for an automobile.

[0002]

2. Description of the Related Art In the drawing, a symbol is used in which one of the middle lines extending from the apex angle of an isosceles triangle is painted. Part. Conventionally, for example, a weather strip that is fitted to a door sash of an automobile and seals between a body opening edge and the door sash is generally made of a rubber composition mainly containing EPDM as shown in FIGS. 1 and 2. In addition, the extruded part 10 corresponding to the straight part
Molding part 20 corresponding to a part of complicated shape such as a terminal part
And a seal lip 32 elastically contacting the opening edge of the body at the U-shaped base 31 fitted to the door sash.
Is protruding.

[0003] However, the above-mentioned conventional automobile weather strip has poor decorativeness itself in terms of material and construction method, and also has an extruded part 10 and a molded part 20.
Is different in appearance, such as color tone, gloss, and surface texture, and lacks a sense of unity.

[0004] that adhered this for decorative film 50 of FIG. 3 in wearability request surface K is used as shown in FIG. In FIG. 4 , reference numeral 10 denotes an extruded portion, 20 denotes a molded portion, 51 denotes an adhesive layer, 52 denotes a decoration layer, and 53 denotes a clear layer.

[0005]

The problem to be solved is that, in the above-mentioned conventional weatherstrip for an automobile, the extruded part 10 and the molded part 20 are different in appearance such as color tone, gloss and surface texture. It lacks a sense of unity.

[0006]

A description will be given with reference to FIGS. 5 to 12. FIG. The first invention is a method for manufacturing a weatherstrip in which a molded portion 20 such as a corner or a terminal portion is connected to an extruded portion 10 corresponding to a linear portion,
A step of integrating at least a first decorative film 40 comprising a heat-fusible adhesive layer 41 and a decorative layer 42 on a surface of the extruded portion of the weather strip where decorativeness is required, and forming the extruded portion 10 into a mold Set on the mold section 20
The first decorative film 40 is formed on the surface of the extruded part 10 and the molded part 20 where the decorativeness is required.
Separate from at least the heat-fusible adhesive layer 61 and the decorative layer
A step of superposing the second decorative film 60 made of 62 over the extruded part 10 and the molded part 20, and a step of heat-pressing the superimposed second decorative film 60 to perform heat fusion. Things.

The second invention relates to a method for manufacturing a weather strip in which a molded portion 20 such as a corner or a terminal is connected to an extruded portion 10 corresponding to a linear portion. At least the heat-fusible adhesive layer 41 and the decorative layer 4
A step of integrating the first decorative film 40 made of 2;
The first decorative film 40 is separated from the first decorative film 40 by at least heat fusion over the bonding portion between the extrusion molding portion 10 and the molding portion 20 in the mold.
The second decorative file comprising the adhesive layer 61 and the decorative layer 62
A step of setting the lum 60 and setting the extruded part 10 thereon, and injecting a raw material into the molded part 20 and heating it to integrate the extruded part 10, the molded part 20 and the second decorative film 60 those consisting step of.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS To explain the embodiment, reference numeral 10 denotes an extruded portion corresponding to a linear portion of an automobile weather strip, and reference numeral 20 denotes a portion connected to the extruded portion 10 and having a complicated shape such as a corner or a terminal portion. A molded part to be formed, which is generally made of a rubber composition containing EPDM as a main component. For example, the cross-sectional shapes of the extruded portion 10 and the molded portion 20 will be described. Reference numeral 31 denotes a U-shaped base fitted to the door sash, and 32 protrudes from the base 31 to form This is the seal lip to be brought into contact. 4
Reference numerals 0 and 60 denote first and second affixed portions of the base portion 31 of the extruded portion 10 and the molded portion 20 where decorativeness is required .
The decorative film A (including tape), even small <br/> without each heat fusible adhesive layer 41, 61 as well as decorative layer 42,
62 , which are superimposed on the surface of the weather strip where decorativeness is required, and are heated and pressed, and are heat-sealed so that the seam is difficult to see.

That is, as shown in FIG. 8, the first decorative film 40 is continuously adhered (laminated) to the extrusion-molded portion 10 on the surface where decorativeness is required during the extrusion molding. In addition, as shown in FIG. 9 , another second decorative film 60 is connected to the extruded part 10 at the time of or after connection with the extruded part 10 as shown in FIG. Paste over and heat H as shown in FIG.
And then heat-fused as shown in FIG. 12 to give a sense of unity so that the seams are difficult to see.

The operation of the weather strip will be described below. At least two layers of the heat-sealable adhesive layers 41 and 61 and the decorative layers 42 and 62 are provided on the surface of the weather strip where decorativeness is required.
Since the first and second decorative films 40 and 60 are overlapped and adhered and heat-sealed, the extruded part 10 and the molded part 20 have the same appearance such as color tone, gloss and surface texture, and Seams are difficult to see, giving a sense of unity and good appearance.

[0011]

Order to manufacture, as in the present invention above, according to the present invention, extrusion appearance such as color tone, gloss and surface skin and the molded portion 10 and the molded portion 20 coincides, and seams also less visible, is oneness It has excellent appearance.

[Brief description of the drawings]

FIG. 1 is a front view showing a conventional example.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a partial cross-sectional view of a conventional decorative film.

FIG. 4 shows a state of connection between an extrusion molding part and a molding part of a conventional product .
FIG.

FIG. 5 is a front view showing the embodiment of the present invention.

FIG. 6 is a sectional view taken along line BB of FIG . 5;

FIG. 7 shows a portion of a decorative film applied to an embodiment of the present invention .
In the sectional view, (A) shows the second decorative film, and (B) shows the first decorative film.
It is a decorative film .

FIG. 8 is a partial cross-sectional view showing a state where a first decorative film is attached to an extruded portion according to an example of the present invention.

FIG. 9 is a partial cross-sectional view showing a state of connection between an extruded part and a molded part according to the embodiment of the present invention.

FIG. 10 is a partial cross-sectional view showing a state in which the extruded part and the molded part according to the embodiment of the present invention are connected, and a second decorative film is attached.

FIG. 11 shows the heating and heating of the second decorative film according to the embodiment of the present invention.
It is a fragmentary sectional view showing the state where it presses.

FIG. 12 is a partial cross-sectional view showing a state where the second decorative film according to the embodiment of the present invention is fused.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Extrusion molding part 20 Mold molding part 31 Base part 32 Seal lip 40 Decorative film 41 Heat-fusible adhesive layer 42 Decorative layer 50 Decorative film , 1st decorative film 51 Adhesive layer 52 Decorative layer 53 Clear layer 60 2nd decorative film 61 Heat- fusible adhesive layer 62 Decorative layer H Heat and pressure K Decorative required surface

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60J 10/08 B60R 13/06

Claims (2)

(57) [Claims] An extruded portion (1) corresponding to a linear portion.
A method for manufacturing a weatherstrip in which a molded part (20) such as a corner or a terminal part is connected to the extruded part of the weatherstrip at least on a surface where decorativeness is required of the extruded part of the weatherstrip. Integrating the first decorative film (40) comprising the adhesive layer (41) and the decorative layer (42), setting the extruded part (10) in a mold and forming the molded part (20) , And the extruded part (1
0) and the surface of the molded part (20) where decorativeness is required,
At least heat separate from the first decorative film (40)
A second layer composed of a fusible adhesive layer (61) and a decorative layer (62);
(2 ) a step of superimposing the decorative film (60) over the extruded part (10) and the molded part (20), and heat-pressing (H) the superimposed second decorative film ( 60 ) to generate heat; A method of manufacturing a weather strip for an automobile, comprising a step of fusing. 2. An extruded portion (1) corresponding to a linear portion.
0) Connect the molded part (20) such as corner or terminal part
A method for manufacturing a weather strip, comprising:
Demands for decorativeness of extruded part of weatherstrip
At least a heat-fusible adhesive layer (41) and a decorative layer on the surface
Consisting of (42)FirstIntegrated decorative film (40)
Extrusion part (10) and mold part (2)
Straddling the joint with 0)FirstDecorative film (40)
Separate from at least the heat-fusible adhesive layer (61)
Second decorative film (60) consisting of decorative layer (62)Set
And setting an extruded part (10) on this,
The raw material is injected into the molding part (20), heated and extruded.
(10) and the molded part (20)SecondDecorative film (6
0)
Trip manufacturing method.