JPH0781412A - Weather strip for automobile and manufacture thereof - Google Patents

Abstract

PURPOSE:To provide a weather strip for automobile in which appearances such as color tone, gloss, and skin of an extrusion molding part and a die forming part are conformed to each other, the joint part is hardly found out, a sense of togetherness is provided, and the appearance is excellent. CONSTITUTION:This weather strip is constituted so that an extrusion molding part 10 corresponding to a straight part is connected to a die forming part 20 corresponding to parts of complicated form such as corner/terminal part, a decorative film 40 consisting of at least a thermofusible adhesive layer 41 and a decorative layer 42 is piled on the surface required for decorativeness of the weather strip, and both are thermally fused together.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art In the figure, a symbol is used in which one of the median lines from the apex angle of an isosceles triangle is filled. This shows that the filled side represents the molding portion and the non-filled side is extrusion molding. Represents a division. BACKGROUND ART Conventionally, for example, a weather strip that is fitted to a door sash of an automobile and seals between a body opening edge and a door sash is generally made from a rubber composition containing EPDM as a main component, as shown in FIGS. 1 and 2. In addition, the corner of the extrusion molding part 10 that corresponds to the straight part
Mold forming part 20 corresponding to a complicatedly shaped part such as a terminal part
And a seal lip 32 for elastically contacting the opening edge of the body with a U-shaped base 31 fitted to the door sash.
Is projected.

However, the above-mentioned conventional automotive weather strip itself has poor decorativeness in terms of material and construction method, and the extrusion molding portion 10 and the molding portion 20 are not provided.
Has a problem in that the appearances such as color tone, gloss, and surface skin are different, and a sense of unity is lacking.

Therefore, the decorative film 50 shown in FIG. 5 is attached to the mountability demanding surface K and is used as shown in FIG. In FIG. 7, 10 is an extrusion molding part, 20 is a mold molding part, 51 is an adhesive layer, 52 is a decoration layer, and 53 is a clear layer.

[0005]

The problem to be solved is that, in the conventional weather strip for automobiles described above, the extrusion molding part 10 and the mold molding part 20 have different appearances such as color tone, gloss and surface texture. It lacks a sense of unity.

[0006]

[Means for Solving the Problems] FIGS. 3, 4, 6 and 8
It will be described with reference to FIGS. A first aspect of the present invention is a weather strip formed by connecting a die-molded portion 20 such as a corner or a terminal portion to an extrusion-molded portion 10 corresponding to a straight line portion, and extruding a surface that requires decorativeness of the weather strip. The decorative film 40, which is composed of at least two layers of the heat-fusible adhesive layer 41 and the decorative layer 42, is heat-fused across the molding portion 10 and the molding portion 20.

A second aspect of the present invention is a method for manufacturing a weather strip, in which a die forming portion 20 such as a corner or a terminal portion is connected to an extrusion forming portion 10 corresponding to a straight line portion. On the surface which is required to have decorativeness, at least the heat-fusible adhesive layer 41 and the decorative layer 4
The step of integrating the decorative film 40 made of 2 and the step of setting the extrusion molding part 10 in a mold to mold the molding part 20 and the decorativeness of the extrusion molding part 10 and the molding part 20 are required. A step of superimposing the decorative film 40 on the surface over the extrusion molding part 10 and the molding part 20;
And the decorative film 40 superposed thereon is heated and pressed H to be heat-sealed.

A third aspect of the present invention is a method for producing a weather strip, which comprises connecting a die forming portion 20 such as a corner or a terminal to an extruding portion 10 corresponding to a straight line portion. On the surface which is required to have decorativeness, at least the heat-fusible adhesive layer 41 and the decorative layer 4
A step of integrating the decorative film 40 consisting of two, a step of setting the decorative film 40 in the mold so as to straddle the bonding part between the extrusion molding part 10 and the molding part (20), and setting the extrusion molding part 10 in this And a method of manufacturing a weather strip for an automobile, which comprises the steps of injecting a raw material into the mold forming section 20 and heating the raw material to integrate the extrusion forming section 10, the mold forming section 20 and the decorative film 40.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Explaining the embodiments, 10 is an extruded portion corresponding to a straight portion of a weather strip of an automobile, and 20 is a portion connected to the extruded portion 10 having a complicated shape such as a corner or a terminal portion. The mold forming part is made of a rubber composition containing EPDM as a main component. For example, the cross-sectional shapes of the extruded molding portion 10 and the molding portion 20 will be described. Reference numeral 31 is a U-shaped base portion that is fitted to the door sash, and 32 is projectingly provided on the base portion 31 so that the body opening edge and the elastic body are elastic. It is a sealing lip to contact. 40
Is a decorative film (including a tape) attached over the surface of the base portion 31 of the extrusion-molded portion 10 / mold-formed portion 20 that requires decorativeness, and includes at least the heat-sealable adhesive layer 41 and the decoration. It is composed of two layers 42, which are superposed on the surface of the weather strip which is required to have decorative properties, heated and pressed, and heat-sealed so that the seam is hard to see.

That is, as shown in FIG. 8, the decorative film 40 is continuously attached (laminated) to the extrusion molding portion 10 on the surface which is required to have a decorative property during the extrusion molding. As shown in FIG. 9, the mold forming part 20 is connected to the extrusion forming part 10 after or after the connection.
As shown in FIG.
As shown in FIG. 1, heat H is applied, and as shown in FIG. 12, it is pressed and heat-fused to give a sense of unity so that the seam is hard to see.

The operation will be described. A decorative film 40 having at least two layers of a heat-fusible adhesive layer 41 and a decorative layer 42 is superposed on the surface of the weather strip which is required to have a decorative property and heat-fused. Therefore, the extrusion molding part 10 and the mold molding part 20 have the same appearance in terms of color tone, gloss, surface texture, and the like, and the seams are hard to see, giving a sense of unity and a good appearance.

[0012]

Since the present invention is constructed as described above,
The extrusion molding part 10 and the mold molding part 20 have the same appearance such as color tone, gloss, and surface texture, and the seams are hardly visible.

[Brief description of 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 front view showing an embodiment of the present invention.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a partial cross-sectional view of a conventional decorative film.

FIG. 6 is a partial sectional view of a decorative film applied to an embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a conventional product.

FIG. 8 is a partial cross-sectional view showing a state in which a decorative film is attached to the extrusion-molded portion according to the embodiment of the present invention.

FIG. 9 is a partial cross-sectional view showing a state of connection between the extrusion molding unit and the mold molding unit according to the embodiment of the present invention.

FIG. 10 is a partial cross-sectional view showing a state in which the extrusion molding part and the mold molding part of the embodiment of the present invention are connected and a decorative film is attached to the mold molding part.

FIG. 11 is a partial cross-sectional view showing a state in which the decorative film attached to the mold forming part of the embodiment of the present invention is heated and pressed.

FIG. 12 is a partial cross-sectional view showing a state in which the decorative film of the embodiment of the present invention is fused.

[Explanation of symbols]

 10 Extrusion Molding Part 20 Molding Part 31 Base Part 32 Seal Lip 40 Decorative Film 41 Heat-Fusable Adhesive Layer 42 Decorative Layer 50 Decorative Film 51 Adhesive Layer 52 Decorative Layer 53 Clear Layer H Heat Press K Decorative Required Surface

Claims (3)

[Claims] 1. An extrusion molding part (1) corresponding to a straight line portion.
In a weather strip formed by connecting a mold forming portion (20) such as a corner or a terminal portion to (0), an extrusion forming portion (10) of a surface where decorativeness of the weather strip is required.
And a decorative film (40) composed of at least two layers of a heat-fusible adhesive layer (41) and a decorative layer (42), which are heat-sealed to each other over the molding portion (20). 2. An extruded part (1) corresponding to a straight part.
A method for producing a weather strip, which comprises connecting a mold forming part (20) such as a corner or a terminal part to 0), wherein the extruded part of the weather strip is at least heat-fused to a surface of which a decorative property is required. Of integrating the decorative film (40) including the adhesive layer (41) and the decorative layer (42), setting the extrusion molding part (10) in a mold and molding the molding part (20), and The decorative film (40) is laid over the extrusion-molded part (10) and the mold-molding part (20) on the surface of which the decorativeness is required, straddling the extrusion-molded part (10) and the mold-molding part (20). A method for producing a weather strip for an automobile, which comprises the steps of: and a step of heating and pressing (H) the decorative film (40) which is superposed on the decorative film (40) to be heat-sealed. 3. An extrusion molding part (1) corresponding to a straight line portion.
0) A method for producing a weather strip comprising connecting a mold forming part (20) such as a corner or a terminal part, wherein the extruded part of the weather strip has at least a heat-fusible property on a surface requiring decorativeness. The step of integrating the decorative film (40) including the adhesive layer (41) and the decorative layer (42), the decorative film (that extends over the adhesive part between the extrusion molding part (10) and the mold molding part (20) in the mold. 40) is set, and the extrusion molding part (10) is set in this, and raw material is injected into the mold molding part (20) and heated to heat the extrusion molding part (1).
0), the mold forming part (20) and the decorative film (40) are integrated with each other to produce a weather strip for an automobile.