JPH05269818A - Belt molding for motorcar - Google Patents

Abstract

PURPOSE:To integrate a lip unit, excellent in flexibility, with a core unit, excel lent in design, with adhesive agent. CONSTITUTION:The title mole is manufactured by a method wherein a lip unit 10, formed of EPDM or olefin elastomer through extrusion molding, is bonded to a SUS core unit 20, obtained by integrating vinyl chloride material with SUS through extrusion molding and applying silane coupling process 28, or the SUS core unit 20, obtained by integrating the vinyl chloride material with SUS through extrusion molding and providing a part to be bonded to the lip unit 10 with a resin layer, through olefin adhesive agent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile belt molding.

[0002]

2. Description of the Related Art Conventionally, as a technique of this type, (1) a lip portion formed of a vinyl chloride (hereinafter simply referred to as vinyl chloride) material and stainless steel (hereinafter simply referred to as SUS). The cored part formed is integrally extruded to bond them together at the time of molding, or (2) the lip part formed of ethylene propylene rubber (hereinafter simply referred to as EPDM) and the cored bar formed of SUS. Integral extrusion molding for adhering both to each other at the time of molding, or (3) integrating a rip portion extruded and formed by EPDM and a core metal portion integrally extruded with a vinyl chloride material and SUS by caulking or clipping. The way is done.

[0003]

However, in the above-mentioned prior art (1), since the lip portion for holding glass or sealing water droplets is formed of a vinyl chloride material, the lip portion is poor in sag and long. There was a problem that the function could not be secured during the period.

In the above-mentioned prior art (2), since the lip portion is formed of EPDM, it is possible to secure the sag of the lip portion, but the adhesive strength by vulcanization adhesion of EPDM and SUS is increased. However, there are problems such as low design and poor design of EPDM.

In the above prior art (3), since the lip portion is formed of EPDM, it is possible to secure the sag of the lip portion. However, the caulking step is required and the manufacturing cost becomes high, and the caulking is performed. EPD for
Since it is necessary to put a metal core material into the extrusion molded part of M, there is a problem that it is difficult to downsize the belt molding and the degree of freedom in design is limited.

[0006] Therefore, an object of the present invention is to integrate a lip portion having a good settling property and a cored bar portion having an excellent designability by adhesion.

[0007]

[Constitution of the invention]

[0008]

The technical means taken in the present invention to solve the above technical problems are as follows: a lip portion formed by extruding EPDM or PVC material, a PVC material and SUS. SUS core which is integrated by extrusion molding and has been subjected to silane coupling treatment, or SUS core in which a vinyl chloride material and SUS are integrated by extrusion molding and a resin layer is provided at the adhesive portion with the lip portion. The gold portion is bonded with a pellet-shaped or film-shaped olefin adhesive.

[0009]

INDUSTRIAL APPLICABILITY The present invention has excellent EPD
Since the lip portion formed of M or the thermoplastic elastomer material and the core metal portion formed of the vinyl chloride material or the thermoplastic elastomer material having excellent design and SUS are bonded with the olefin adhesive, Since a strong adhesive force can be obtained between the lip portion and the cored bar portion, it is possible to secure the settling property of the lip portion and to reduce the thickness and weight of the conventional technique of adhering the both by caulking. You can

[0010]

Embodiments will be described below with reference to the drawings.

As shown in FIG. 1 to FIG. 5, the lip portion and the SUS cored bar portion were extruded and manufactured by using various adhesives as shown in Table 1.

[0012]

[Table 1]

The adhesive 27 of Example 1 is Super Clone manufactured by Sanyo Kokusaku Pulp Co., Ltd., the adhesive 27 of Example 2 is HA-430 manufactured by Tonen Petrochemical Co., Ltd., and the adhesive 27 of Example 3 is Shinetsu. KBM803 manufactured by Silicone Co., Ltd., FA-7141 manufactured by AC EYEYAPAN LIMITED Co., Ltd. for the adhesive 27 of Example 4, Chemist KF8251A manufactured by Toray Co., Ltd., and the adhesive 27 of Comparative Example 1 for the adhesives 27 of Examples 5 to 7. Yokohama Rubber Co., Ltd. Hama Tight A-110
4B, adhesive 27 of Comparative Example 2 is ChemFloc # 205 / # 252 manufactured by Road Far East Incorporated.
Are using. As the olefin elastomer forming the lip portion 10 of Example 6, Santoprene 101-64 manufactured by Mitsubishi Monsanto Co., Ltd. was used.

1 is a belt molding, 10 is a lip portion, and 20
Is a SUS core metal part, 21 and 22 are vinyl chloride materials, 23 and 24 are EPDM, 25 and 26 are solution type acrylic adhesives, 27
Is an adhesive shown in Table 1, and 28 is a silane coupling treatment.

In the first embodiment, the SUS cored bar portion 20 and the EPDM are used.
The rip portion 10 formed by the above is bonded with a solution type olefin adhesive 27.

In the second embodiment, the SUS cored bar portion 20 and the EPDM are used.
The lip portion 10 formed by the above is bonded with a pellet-shaped olefin adhesive 27.

In the third embodiment, the SUS cored bar portion 20 and the EPDM are used.
The lip portion 10 thus formed is adhered with a pellet-shaped olefin adhesive 27, and the adhesive portion of the SUS cored bar portion 20 with the lip portion 10 is subjected to silane coupling treatment 28.

In the fourth embodiment, the SUS cored bar portion 20 and the EPDM are used.
The lip portion 10 formed by the above is adhered with a film-shaped olefin adhesive 27.

In Example 5, a vinyl chloride material 22 is adhered to SUS with a solution type acrylic adhesive 26, and the vinyl chloride 22 and the lip portion 10 formed by EPDM are laminated film-like olefin / polyester adhesive. It is adhered with the agent 27.

In Example 6, a vinyl chloride material 22 was adhered to SUS with a solution type acrylic adhesive 26, and a lip portion 1 formed of the vinyl chloride 22 and an olefin elastomer.
No. 0 and No. 0 are adhered with a laminated film-like olefin / polyester adhesive 27.

In Example 7, the solution type acrylic adhesive 26 was adhered to SUS to obtain the solution type acrylic adhesive 26.
And the rip portion 10 formed by EPDM are adhered with a laminated film-like olefin / polyester adhesive 27.

In Comparative Example 1, the SUS cored bar portion 20 and the rip portion 10 made of a vinyl chloride material 22 are bonded with a solution type acrylic adhesive 27.

In Comparative Example 2, the SUS cored bar portion 20 and EPDM are used.
The rip portion 10 thus formed is bonded with a thermosetting chloroprene adhesive 27.

Next, using the manufactured test piece, the rip portion 10 was compressed by a compression jig 30 as shown in FIG. 8 under a test condition of a compression rate of 25% and an aging condition of 70 ° C. × 200 Hr.
Was crushed and a compression set test was conducted. Further, as shown in FIG. 9, a peeling test was performed as shown in FIG. 9 under test conditions of a peeling speed of 50 mm / min and a peeling direction P. The test results are shown in Table 2.

[0025]

[Table 2]

As is clear from Table 2, Examples 1 to 7
In Comparative Example 2, it was found that the adhesive strength was equivalent to that of Comparative Example 2 and the adhesive strength was significantly higher than that of Comparative Example 2.

It was also found that as the adhesive 27, a pellet-shaped or film-shaped adhesive having a high degree of olefin polymerization can provide higher adhesive strength than a solution-type olefin-based adhesive.

Further, as in the third embodiment, the SUS cored bar portion 20
It has been found that the silane coupling treatment 28 is applied to the adhesive portion with the lip portion 10 to obtain a strong adhesive force. Further, it has been found that a stronger adhesive force can be obtained by covering the adhesion portion of the SUS cored bar portion 20 with the lip portion 10 with the resin layer as in Examples 5 and 7. Further, it has been found that when the SUS cored bar portion 20 is covered with the resin layer, the laminated film-like olefin / polyester adhesive can obtain a large adhesive force.

Further, it has been found that even if the lip portion 10 is made of an olefin elastomer as in Example 6, the same sag and adhesive strength can be obtained.

The vinyl chloride material 22 of the SUS cored bar portion 20
It is also good to form the above with a thermoplastic elastomer.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a structure of a belt molding.

FIG. 2 is a cross-sectional view showing the structure of a belt molding.

FIG. 3 is a cross-sectional view showing the structure of a belt molding.

FIG. 4 is a cross-sectional view showing the structure of a belt molding.

FIG. 5 is a cross-sectional view showing the structure of a conventional belt molding.

FIG. 6 is a cross-sectional view showing the structure of a conventional belt molding.

FIG. 7 is an explanatory diagram of a compression set test method.

FIG. 8 is an explanatory diagram of a peeling test method.

[Explanation of symbols]

 1 Belt Mall 10 Rip Part 20 SUS Core Bar Part 27 Adhesive 28 Silane Coupling Treatment

Claims (7)

[Claims] 1. An olefin-based adhesive comprising a lip portion formed by extruding a rubber-like elastic material, and a SUS mandrel portion in which a vinyl chloride material or a thermoplastic elastomer material and SUS are integrated by extrusion molding. A belt molding for automobiles, characterized by being bonded with an agent. 2. The belt molding for an automobile according to claim 1, wherein the rubber-like elastic material is formed of EPDM. 3. The belt molding for an automobile according to claim 1, wherein the rubber-like elastic material is formed of a thermoplastic elastomer material. 4. The belt molding for an automobile according to claim 1, wherein the adhesive is a pellet-shaped or film-shaped adhesive having a high degree of olefin polymerization. 5. The belt molding for an automobile according to claim 1, wherein a silane coupling treatment is applied to an adhesion portion of the SUS core metal portion with the lip portion. 6. The belt molding for an automobile according to claim 1, wherein a resin layer is formed on an adhesive portion between the SUS cored bar portion and the lip portion. 7. The belt molding for an automobile according to claim 6, wherein the resin layer is made of a laminated film olefin / polyester adhesive.