JPH1029434A - Surface treatment method of glass-run channel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a crimp form easily adjustable by way of varying each grain shape of a group of glass beads, working temperature, action time or the like by sinking this glass bead group mounted on the surface of a glass-run channel with high temperature and plasticity with its own weight, and forming a uniform crimp on the surface. SOLUTION: An unvulcanized glass-run channer is secured by both rubber and resin extruders 18 and 19 in combination, and simultaneously a polyolefin resin layer is formed on the surface. Next, this unvulcanized glass-run channel is heated and vulcanized in a vulcanizing furnace 12, and then it is passed through a high temperature bead kiln 14 handling glass beads as a flowing medium, and a glass bead group 5 is mounted on a surface of the polyolefin resin layer of the glass-run channel 1 with high temperature and plasticity. Finally, the glass-rum channel 1 mounted with this glass bead group 5 is conveyed by a belt conveyor 15, but in this interval, the glass bead group 5 is sunk with its own weight in the glass-run channel 1, forming a uniform crimp 2b on a plane.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating the surface of a glass run channel, in which the surface of a lip or the like of a glass run channel formed with a polyolefin resin film layer is extruded by co-extrusion and the sliding property is improved. is there.

[0002]

2. Description of the Related Art Conventionally, for a glass run channel 1 attached to an automobile door, in order to improve the slidability of the door glass, a lip 1c, etc., which comes into contact with the door glass, is flocked, coated with a urethane resin, coated with a polyolefin resin. And so on. Among them, especially for polyolefin resin-coated products (for example, polyethylene which has a silane group at the terminal and crosslinks by reacting with moisture), to reduce the surface gloss and improve the sliding property of the door glass, 1
5 to FIG. That is, first, co-extrusion is performed by a rubber extruder 18 and a resin extruder 19 as shown in FIG. Next, vulcanization is performed through a UHF furnace 11 and a vulcanization furnace 12 using UHF as a heat source. Further, as shown in FIGS. 2 and 3, the glass run channel obtained in the vulcanizing furnace 12 has fine irregularities on its surface by a shot blast 13 of glass beads. Is formed).

However, the surface treatment method of the shot blasting 13, shallow depth T ₁ of the embossing 2a as shown in FIGS. 4 and 5, a non-uniform, yet it is difficult to control the shape of the grain 2a Therefore, when the glass run channel 1 is affected by heat or the like, the grain 2a becomes shallow or disappears, and the sliding property of the door glass is reduced.

[0004]

Problems to be Solved [0005] The surface processing method according to shot blasting 13 with respect to the conventional glass run channel 1, shallow depth T ₁ of the embossing 2a, heterogeneous, yet the grain If it is difficult to control the shape of the glass run channel 2a and the glass run channel 1 is affected by heat or the like, the grain 2a becomes shallow or disappears, and the slidability of the door glass decreases.
The present invention has been made to solve the above problems, and provides a surface treatment method for a glass run channel in which the grain is deep and uniform, the shape of the grain is easily controlled, and the sliding property of the door glass is excellent.

[0005]

Means for Solving the Problems As shown in FIGS. 6 and 8 to 11, a first aspect of the present invention is shown in FIG. The glass bead group 5 is placed as shown in FIG. 9, and the glass bead group 5 is settled by its own weight in the glass run channel 1 as shown in FIG. 9, and a uniform grain 2b is formed on the surface as shown in FIG. This is a surface treatment method for a glass run channel, characterized in that the property is improved.

According to a second invention, as shown in FIGS. 7 to 11, a glass bead group 5 is placed on the surface of a glass run channel 1 before vulcanization, on which a grain is to be formed, and then heated and vulcanized. During the vulcanization treatment, the glass beads 5 are allowed to settle under their own weight into the glass run channel 1 having high temperature and plasticity as shown in FIG. 9 as shown in FIG. 9, and a uniform grain 2b as shown in FIG. It is a surface treatment method for a glass run channel, which is formed to improve the sliding property of a door glass.

According to the first and second aspects of the present invention, the grain 2b formed on the surface by the glass bead group 5 does not become shallow or disappear due to the influence of heat, etc.
Excellent sliding properties of door glass. Moreover, the grain 2
The shape (size, depth, etc.) of b can be easily controlled by changing the particle size, operating temperature, operating time, etc. of the glass bead group 5.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of the first invention will be described with reference to FIG. 6 and FIGS.
First, co-extrusion is performed by a rubber extruder 18 and a resin extruder 19 to obtain an unvulcanized glass run channel, and at the same time, a polyolefin resin layer is formed on the surface. Next, the unvulcanized glass run channel is passed through a vulcanizing furnace 12 to be heated and vulcanized. Further, the glass beads are passed through a high-temperature bead furnace 14 using glass beads as a fluid medium, and the glass beads group 5 is placed on the surface of the polyolefin resin layer which is to form a grain of the glass run channel 1 having high temperature and plasticity, as shown in FIG. . Finally, the glass run channel 1 on which the glass bead group 5 is placed is conveyed by the belt conveyor 15. During this time, the glass bead group 5 sediments under its own weight into the glass run channel 1 having high temperature and plasticity, as shown in FIG. 9, and a uniform grain 2b is formed on the surface as shown in FIG.
One of the bead furnace 14 and the glass bead group 5 may be provided, or both may be used.

Next, an embodiment of the second invention will be described.
Referring to FIGS. 7 to 11, first, the rubber extruder 1 will be described.
8. By co-extruding with a resin extruder 19, an unvulcanized glass run channel is obtained, and a polyolefin resin layer is formed on the surface. Next, as shown in FIG. 8, a glass bead group 5 is placed on the surface of the resin layer where the uncured glass run channel is to be embossed. Next, the unvulcanized glass run channel on which the glass bead group 5 is placed is passed through a vulcanizing furnace 12 to be heated and vulcanized. Then, during the vulcanization treatment, the glass bead group 5 sediments under its own weight into the glass run channel 1 having high temperature and plasticity as shown in FIG. 9, thereby forming a uniform grain 2b on the surface as shown in FIG. .

[0010]

EXAMPLES A comparison was made between shot blasted glass beads after vulcanization and those according to the present invention (using 200 micron glass beads). Sliding resistance (dry type, normal value)
Is 5.6N (Newton) for conventional products,
The value according to the present invention is 4.9 N (Newton), and the slidability is remarkably improved as compared with the conventional product.

When the appearance is compared, the conventional product has a shallow and uneven grain depth T _1, while the article according to the present invention has a uniform grain depth T ₂ and shape. If further it has an average depth T ₂ of the grain to the same, as shown in FIGS. 4 and 5, whereas the prior art there is a mottled appearance, due to the present invention, no plaques, clean grain A pattern is formed.

In both the conventional product and the present invention, the surface of the polyolefin layer is gradually removed by sliding of the door glass. However, the present product has a uniform shape of the grain 2b. As shown in FIG.
Although it may spread, the progress of the change in surface gloss is uniform and gradual because it is uniformly cut.

[0013]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the surface is not deepened or disappeared under the influence of heat or the like, is deep, uniform, and has excellent sliding properties of door glass. 2b is formed. The shape (size, depth, etc.) of the grain 2b depends on the particle size of the glass bead group 5, the operating temperature,
It is easily controllable to change the operation time and the like.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a conventional example.

FIG. 2 is a cross-sectional view showing a conventional example of a glass run channel.

FIG. 3 is an enlarged sectional view of a portion A in FIG. 2;

FIG. 4 is an enlarged sectional view of a portion A of FIG. 2 showing a grain according to a conventional example.

FIG. 5 is an enlarged sectional view showing a grain according to a conventional example.

FIG. 6 is a block diagram showing one embodiment of the present invention.

FIG. 7 is a block diagram showing another embodiment of the present invention.

FIG. 8 is an enlarged sectional view corresponding to a portion A in FIG. 2 of the embodiment of the present invention.

FIG. 9 is a view A of FIG.
It is an expanded sectional view corresponding to a part.

FIG. 10 is an enlarged sectional view showing a grain according to the embodiment of the present invention.

FIG. 11 is an enlarged sectional view showing a process of wear caused by sliding of the grain according to the embodiment of the present invention.

[Explanation of symbols]

1 Glass run channel 1c lip 2a grain 2b grain 5 glass beads group 11 UHF furnace 12 pressurized硫炉13 shotblasting 14 beads furnace 15 conveyor 18 rubber extruder 19 the resin extruder T ₁ depth T ₂ Depth

Claims (2)

[Claims] 1. A glass bead group (5) is placed on a surface of a vulcanized glass run channel (1) having high temperature and plasticity, on which a grain is to be formed, and the glass bead group (5) is placed in the glass run channel (1). A method of forming a uniform grain (2b) on the surface of the glass run channel, thereby improving the sliding property of the door glass. 2. A glass run channel (1) before vulcanization treatment, wherein a glass bead group (5) is placed on the surface of the glass run channel (1) on which a grain is to be formed, and then heated and vulcanized. The glass run is characterized in that the group (5) is settled under its own weight into a glass run channel (1) having high temperature and plasticity, and a uniform grain (2b) is formed on its surface to improve the sliding property of the door glass. Channel surface treatment method.