JPS58108122A - Manufacture of weather strip - Google Patents

Abstract

PURPOSE:To manufacture efficiently and continuously weather strip having the improved function of sliding on a window glass pane of an automobile, etc., by extruding together plastic, such as synthetic resin, having an excellent property of sliding on a glass pane, and plastic, such as synthetic resin, having elasticity like rubber. CONSTITUTION:Two extruders 1 and 1' are joined to a mouthpiece 3 having a prescribed outlet form with a number of small projections 6 and to the main body 2 of a die. Plastic of resin (ex. hard vinyl chloride, ABS, etc.) having an excellent property of sliding on a glass pane is supplied to the extruder 1 and led to the mouthpiece 3 with the small projections. Meanwhile, plastic of resin (ex. soft vinyl chloride, Ep rubber, etc.) having elasticity like rubber is supplied to the extruder 1' and led to the part 5 of the mouthpiece 3 other than the part with small projections. The two kinds of materials are joined and extruded from the mouthpiece 3, and thereby weather strip having a number of slidable small projections can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention utilizes co-extrusion molding of a plastic material such as a synthetic resin that has good sliding properties with glass and a plastic material that has shim elasticity such as a synthetic resin to improve the papermaking efficiency. The present invention relates to a method of manufacturing sea urchin day strips having the following methods.

Conventionally, weather strips are manufactured by extrusion molding, and the molded product is subjected to secondary processing, such as by electro-flocking microfibers to create a raised material, which is then used for automobile windows, etc., and is not allowed to slide against the window glass. well known.

However, secondary processing is inefficient and therefore expensive. Also, fibers etc. may come off when using hair transplants, etc.
It has the disadvantage that it reduces the sliding function with the glass.

In order to eliminate these drawbacks, the present invention combines a plastic material such as a synthetic resin that has good sliding properties with glass and a plastic material such as a synthetic resin that has elasticity with a simple device, and also has good sliding properties with glass. The present invention relates to a method for continuously manufacturing sea urchin strips that efficiently improve the sliding function of window glass for automobiles, etc. by forming a large number of small protrusions using a plastic material with good properties.

That is, as shown in the figure, the die may be equipment generally used for coextrusion.

The present invention is characterized in that a goo tip having a large number of small protrusions (6) as shown in the figure is installed at the tip of a goo body for coextrusion molding, and sliding small protrusions are formed to efficiently and continuously form the goo. The present invention provides a method for manufacturing a sea urchin strip for window glass of automobiles, etc.

In the present invention, the small protrusions that have good sliding properties with glass are usually made of hard vinyl chloride or semi-hard vinyl chloride, mv mm, m B
8. Made of synthetic resin with sliding properties such as nylon and P1, and the molded body other than the small protrusions is made of soft vinyl chloride, Icv rubber, etc.
IF:/mu is made of elastic synthetic resin, etc.
On the other hand, at the bottom of the small protrusion that has good sliding properties with the glass, there is a molded object Kl other than the small protrusion! The synthetic resin used can be formed arbitrarily. Furthermore, metal inserts made of stainless steel, aluminum, etc. may be co-extruded inside the molded body other than the portions having the small protrusions.

Embodiments of the present invention will be described with reference to the drawings.

(1) (1″) is the extruder, (2) is the goo body, (3)
is the base attached to the Gui body, (4) is the take-up machine, (5
') Small protrusion with Fi sliding tube, (5) is a molded object other than the protrusion.

In the above device, the synthetic resin, etc. extruded from the extruder (1) is guided to the small protrusion (6) by the mouthpiece (3), while the synthetic resin, etc. extruded at the same time by the extruder (1') is guided to the small protrusion (6). It passes through the main body (2) and joins at the small protrusion (6) of the cap (3),
It is possible to efficiently and economically produce wedding strips that have good sliding properties with glass.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the present invention, Fig. 2 is an enlarged front view of the mouthpiece, Fig. 3 is a sectional view (A) and perspective view (B) of a molded product, and Fig. 4 is a molding of another shape. It is a sectional view (0) (D) of the body.

Claims (1)

[Claims] A cap (3) with a predetermined outlet shape having a large number of small protrusions (6)
) and the goo body (2), two extruders are connected to the extruder (1), and the extruder (1) is supplied with a plastic resin that has good sliding properties with glass, and guided to the small protrusion of the mouthpiece. On the other hand, extruder (1') K
supplies a plastic resin with rubber elasticity and guides it to the part (5) other than the small protrusion of the cap! A method for producing a sea urchin day strip, characterized in that two types of materials are combined and extruded from a die to form a large number of small sliding protrusions.