JPS61226346A - Weather strip - Google Patents

Abstract

PURPOSE:To aim at enhancing the external appearance of a weather strip composed of an extrusion-molded section and a die-molded section and to enhance the antiweatherability and antiozone ability of the weather strip, by forming an urethane group paint coating layer containing a water-proof pigment, on the externally exposed surface of the weather strip. CONSTITUTION:A weather strip 4 constituting a gasket for a front windshield pane 2 is formed on one side section 4a with a seal lip made in close contact with a vehicle body panel 6 and on the other side section 4b with a seal lip receiving the front windshield pane 2. A coating film layer 8 made of an urethane group paint containing a volatile pigment is formed on the externally exposed outer surface of the strip 4. Upon painting, a primer is coated in a required section of the strip and is then dried by a heater, and the urethane group paint is coated on the primer coated surface, and is then dried by the heater. Accordingly, a difference in height between a die molded section and an extrusion molded section in the corner section of the strip 4 may be eliminated, thereby it is possible to enhance the external appearance of the strip.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a weather strip that is attached to an opening in a vehicle body to which automatic doors, windshields, trunk lids, etc. are attached.

(Prior art) This type of weather strip is attached to the periphery of the opening in the vehicle body where doors, windshields, etc. are attached, and is used to protect the interior and exterior of the vehicle, that is, to prevent rainwater, dust, etc. from entering the vehicle interior. It is for.

In addition, conventional weather strips are generally formed by extrusion molding using rubber-based materials, but as shown in Figure 5, there are cases where the radius of curvature of the corner portion is small or the shape of the contact surface is complicated. In such a case, the extrusion molded product that forms the straight part that has been continuously vulcanized is cut to a predetermined length in advance, and when molding the corner part, the extrusion molded product A is placed in the molded product B. Formed by joining.

(Problems to be solved by the invention) As described above, in a weatherstrip consisting of an extrusion molded part and a molded part, the composition and molding conditions of the two parts are different, so the weatherstrip as a whole is It is not uniform, and there is a difference in level at the joint, and there are significant differences in color layer and gloss, which not only impairs the appearance, but also has problems with drainage.

Therefore, in the present invention, even in the case of a weather strip consisting of an extrusion molded part and a molded part, for example, a coating layer of a urethane paint containing a pigment that harmonizes with the color of the attachment part of the weather strip is applied to the weather strip. By forming it on the surface of the strip, the purpose is to improve the appearance as well as improve weather resistance and ozone resistance.

(Means for Solving the Problems) Therefore, the present invention provides a weather strip consisting of an extrusion molded part and a molded part, which contains a water-repellent pigment at least on the surface exposed to the outside. It is characterized by forming a coating layer of urethane-based paint.

(Description of Examples) FIG. 1 is a perspective view showing an automobile to which the weather strip of the present invention is applied, FIG. 2 is a partial perspective view showing part 0 of FIG. 1, and FIG. It is a sectional view taken along the line -■.

1 to 3, the weather strip 4.
5 is attached to the periphery of the vehicle body openings 2a, 3a to which the front windshield 2, window glass 2, etc. of the vehicle body 1 are attached. Each weatherstrip 4.5 has a corner portion, and has a structure in which a corner portion molded product and a straight portion continuous vulcanization molded product are joined and integrated.

The weather strip 4 constitutes a gasket for the front windshield 2, as shown in FIG. are each formed with a seal lip that fits into the front windshield 2.

The weather strip 5 is of a hollow type as shown in FIG. A main seal lip is formed on the main seal lip 5b, which can be deformed so as to cover the outer circumference of the upper end of the window glass 3 when the window glass 3 is raised.

FIG. 4 shows a modification of the weather strip 5 of FIG. 3. In FIG. That is, the modified weather strip 1
0, the windshield 11 is inserted between a pair of seal lips 10a provided on the weather strip 10,
It is of a type that comes in close contact with the inner facing surface of each seal lip 10a.

Further, each of the weather strips 4, 5, 10 has a coating layer 8, 9, 11 of a urethane paint containing a water-repellent pigment on the surface exposed to the outside. As water-repellent pigments, TiO2゜Fe2O3, CdS, 7nO
, Coo-n, I2O3, berylene scarlet, condensed azo brown 5R, etc., and preferably those having a particle size of 0.005 to 10 .mu.m are used. Moreover, the pigments may be used not only singly but also in combination. Furthermore, when selecting the pigment, it is preferable to appropriately select one that harmonizes with, for example, the color of the vehicle body panel.

When applying the above-mentioned paint, in order to make it easier for the urethane paint to adhere, apply the brimer to the required areas of the weather strip 4°5.10, dry the brimer with a heater, and then apply the brimer to the brimer-applied surface by spraying, etc. A urethane-based paint containing a pigment is applied to the surface, and the pigment is dried using a heater.

As a result, in each of the weather strips 4, 5 and 10, the difference in level between the molded part at the corner part and the extruded part at the straight part is eliminated, and the appearance is improved. Also, the coating layer 8 of urethane paint.
9.11 has moderate stretchability after the paint dries, so
Even when the weather strips 4, 5, and 10 are expanded or contracted, they can be expanded or contracted accordingly, thereby preventing the rubber skin from being exposed.

Furthermore, a coating Li1 formed by containing curable silicone and silicone oil in the urethane coating material.
The lubricity and abrasion resistance of the jl can be improved.

(Effects of the Invention) As explained above, according to the weather strip of the present invention, at least the surface exposed to the outside of the weather strip having an extrusion molded part and a molded part has a urethane-based material containing a water-repellent pigment. Since color is imparted by forming a coating layer of paint, it is possible to compensate for the lack of freedom in the color of rubber, and it also improves the exterior appearance by matching the color of the car body panel. Since the membrane layer is highly stretchable, the rubber base will not be exposed even in the parts where the weatherstrip stretches and the decorative effect will not be impaired. Furthermore, the coating layer has excellent weather resistance and ozone resistance, and the gloss can be freely set, so that it can maintain an excellent decorative effect for a long period of time.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an automobile to which the weather strip of the present invention is applied, Fig. 2 is a partial perspective view showing part 0 of Fig. 1, Fig. 3 is a sectional view taken along FIG. 4 is a longitudinal sectional view showing a modification of the weather strip shown in FIG. 3, and FIG. 5 is a partial perspective view showing a conventional weather strip. 4.5.10...Weather strip, 8,9°11
...paint layer.

Claims (1)

[Claims] A weatherstrip comprising an extrusion molded part and a molded part, characterized in that a coating layer of a urethane paint containing a water-repellent pigment is formed on at least the surface exposed to the outside of the weatherstrip. .