JPH0214143A - Sliding member for glass and its manufacturing method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a glass launch channel for upper and lower sliding glasses provided in an automobile door, and a waist seat tLt attached to the lower edge of a window hole provided with upper and lower sliding glasses. , relates to a sliding member for a sliding glass such as a sunroof provided on the ceiling of a vehicle body, and a method for manufacturing the same.

[Prior art] In conventional sliding members for glass, nylon fiber flocking is applied to the surface of the main portion made of olefin elastomer such as EPDM (polyolefin rubber) or TPO (thermoplastic polyolefin resin). , coating with urethane paint or polyester paint mixed and dispersed with silicone resin or fluororesin powder and a lubricant such as oil or wax to give sliding properties and abrasion resistance, and to improve the bond between glass and glass. This prevents the generation of frictional noise and also prevents the sliding members from wearing out.

[Problem R to be solved by the invention] In a conventional glass sliding member such as a glass launch channel B as shown in FIG. The sliding member 12 is made of urethane paint or polyester paint, which has been mixed and dispersed with nylon fiber flocking or silicone resin or fluororesin powder and a lubricant such as oil or wax, and has low durability and sliding properties. There was also the problem that it was insufficient.

Furthermore, the above-mentioned flocking or painting also has the problem that the construction is complicated.

An object of the present invention is to provide a sliding member for glass and a method for manufacturing the same that solves the above problems.

[Means for solving the problem] This will be explained with reference to FIG. 1 and the drawings. In order to achieve the above object, the glass sliding member according to the present invention is made of EPDM
The main body part 1 is made of an olefin elastomer such as olefin elastomer, and a membrane 2 of polyethylene (JilPE) having the chemical formula % is formed on the surface of the main body 1.

Further, the method for manufacturing a glass sliding member according to the present invention includes EPD
In order to form a film 2 of cross-linked JfiPE having the chemical formula (%) on the surface of the main portion 1 made of an olefin-based elastomer such as M, an olefin-based elastomer and a cross-linked PE are co-extruded.

[Function] In the glass sliding member configured as described above, the crosslinked PE undergoes gelation due to crosslinking, becomes difficult to thermoplasticize, and increases heat resistance, slidability, and abrasion resistance.

Furthermore, since both the olefin elastomer and the crosslinked PE are olefins, they have the property of being compatible when melted, and through coextrusion, the olefin elastomer and the crosslinked PH are compatible, and the olefin elastomer and the crosslinked PH are compatible with each other through the generated compatible layer 3. part 1
and the surface film 2 are firmly adhered to each other.

[Example] An example will be described with reference to FIGS. 1 to 3.

In FIG. 3, 4 is a slide glass, B is a glass launch channel, C is a waist seal, and D is a sunroof.

Figure 1 is A-A in Figure 3 showing glass launch channel B.
In the cross-sectional view, 1 is a main portion made of an olefin elastomer such as EPDM, and 2 is a film of crosslinked PE formed on the surface of the main portion 1.

Furthermore, as shown in FIG. 2, a co-extrusion molded glass sliding member has a compatible layer 3 between the main portion 1 made of EPDM or olefin elastomer, etc. and the crosslinked PE film 2 on the surface thereof. is generated and firmly adheres the main portion 1 and the surface film 2. This is because the main portion 1 made of an olefin elastomer such as EPDM and the crosslinked PE are both olefin and have the property of being compatible when melted.

The crosslinked PE film 2 formed on the surface in this manner progresses into gelation due to crosslinking, becomes difficult to thermoplastic, and increases heat resistance, sliding properties, and abrasion resistance.

The crosslinked PE used is, for example, organic silane-modified PE with a density of 0.92 to 0.97. Molecular weight tens of thousands ~
200,000, with a gel fraction of 60 to 80%, and was crosslinked using hot water, steam, or atmospheric humidity according to the reaction formula below.

(PE main chain) -3t-ORR0-5i- (PE main chain)
↓ H2O (PE main chain) -S+-0-S+- (PE main chain) [Effects of the invention] Since the present invention is configured as explained above, frictional noise with glass disappears and wear is significantly reduced. Decrease. Furthermore, coextrusion greatly simplifies the manufacturing method of the glass sliding portion.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a sectional view taken along the line A-A in Fig. 3 showing an embodiment of the present invention, Fig. 2 is a partially enlarged view of Fig. 1, and Fig. 3 is a cross-sectional view of a sliding member. FIG. 4 is a perspective view of an automobile for explaining the arrangement location, and FIG. 4 is a sectional view taken along line AA in FIG. 3 showing a conventional example. 1.11 Main part 2.12 Membrane 3 Compatible layer 4 Slide glass B Glass run channel C West Seal Sunroof Patent applicant Nishikawa Rubber Industries Co., Ltd. Agent

Claims (1)

[Claims] 1. A cross-linked P of the chemical formula (PE main chain) -Si-O-Si- (PE main chain) is formed on the surface of the main portion (1) made of an olefin elastomer such as EPDM.
A glass sliding member formed with a film (2) of E. 2. Cross-linked P with the chemical formula (PE main chain) -Si-O-Si- (PE main chain) on the surface of the main part (1) made of an olefin elastomer such as EPDM
A method for manufacturing a glass sliding member, which comprises co-extruding an olefin elastomer and crosslinked PE to form the film (2) of E.