JPS5967035A - Forming method of corner part of rubber made glass running channel - Google Patents

Abstract

PURPOSE:To form a corner part inexpensive and excellent in adhesion strength and heat resistance, by charging a thermoplastic resin into a corner part space formed by end faces or notched end faces of a rubber made glass running channel or channels which faces are surface-treated and coated with a hot-melt adhesive. CONSTITUTION:Before charging, the end faces 2 or the notched end faces 2' of the glass running channel or channels 1 are surface-treated, and are coated with a hot-melt adhesive. A notched part of a glass running channel member 1 is opened in conformity to the shape of a window frame, or two glass running channel members 1 are opposed to each other in conformity to the shape of the window, the member or members 1 are set in a metallic mold 10, and a thermoplastic resin is poured into the space part 3. The hot-melt adhesive is preferably a urethane base or nylon base solvent-type one. Polyvinyl chloride, polyethylene or the like is used as thermoplastic resin.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of processing a part of a rubber glass launch channel corner.

Some of the corners of the glass launch channel must be shaped to relieve stress and prevent the ingress of wind and rain; the same is true for rubber glass launch channels. As a method for forming a part of a rubber glass launch channel corner, a method is known in which rubber or synthetic resin is injected into a part of the corner space provided with a notch or notch to match the window frame. However, among these methods, the method of injection molding requires vulcanization time because the injected rubber must be vulcanized or peeled off. In addition, the method of injecting synthetic resin has drawbacks such as low adhesion strength with rubber and easy separation of the comb and synthetic resin. In particular, if the rubber is ethylene/nolopylene thread rubber (e.g. E
l) Blend rubber of MXEPDλ and natural rubber (NRJ (EP/NR) or blend rubber of ethylene 17" propylene rubber and styrene-buccadiene rubber (SBR), (ethylene-propylene rubber such as EP/5ISil) In the case of rubbers containing , they have poor adhesion with synthetic resins (7) and separate very easily.

Another known method is to add a small hole to the notch of a rubber glass run, inject synthetic resin into the hole, and physically suture the hole (Utility Model Publication No. 6617 of 1982). However, some of the corners created using this method lack strength because they are physically connected, and there is also a gap, making it difficult to prevent wind and rain from entering.

As a method to solve the above problem, there is a method of injecting ethylene/vinyl acetate copolymer (E, V, A) into a part of the corner space as a prior art (Patent Application No. 57
53176).

However, in this method, if acetic acid (VAJ content is high) is used as EVA, the heat resistance of some corners will be poor.
A lower VA content has the disadvantage of lower adhesive strength.

As a method to solve this problem, there is a method of filling a part of the corner space with cross-linked EVA, or a method of filling a part of the corner space with a true melt adhesive after surface treatment of the rubber surface.

However, both cross-linked EVA and true melt adhesives are expensive, and any method beyond filling them will inevitably be expensive.

The present invention aims to improve such drawbacks of the corners of the conventional glass launch channel, and is inexpensive and has excellent adhesive strength and heat resistance.
This paper presents a method for forming part of the rubber glass launch channel corner.

The method of the invention includes: I'1. After applying surface treatment 3SA and +l-sotomelt adhesive to the end face or notched cod surface of the manufactured glass resin channel member, filling a part of the corner space formed by the end face or notched end face with #i01 plastic resin. To the Garagaro rubber glass runner'7.
This is a molding method for some Nerf models.

For the corner part 3, after making a notch 5 at the back of the opening 1 of the glass launcher (see Fig. 1), cut the notch 5 into the opening 1 according to the shape of the frame. form. (FIG. 2(a)) Alternatively, it may be formed by making two glass launch channel members 1 face each other in accordance with the window frame shape (FIG. 2(b)).

In the latter case, the two glass launch channel members may be made of different materials.

The glass launch channel member 1 is made of vulcanized rubber, and any type of rubber may be used, such as EP/NR or EI'/S.
BR may also be used.

In the present invention, the end surface 2 or notch end surface 2' of the glass launch channel member 1 is first subjected to surface treatment before filling.

The surface treatment is carried out to activate the rubber surface, and the treatment method itself is known.

For example, rubber is EP/'8BR or 1. EP/N
For R, ν is, for example, trichloroisocyanuric acid (Cm
αsNs Os ) 2-ti solution or tertiary butyl via”? Apply a solution of chloride to the end face or notch end face. 2000A if the rubber is EPMXEPDM
The end face or notch end face is irradiated with the following ultraviolet rays for about 10 seconds.

Apply real-melt adhesive to the surface-treated hind limb end face or notch end face.

As a true melt adhesive, PACE yJe Rimatoshite EV A, polyamide, 7I? There are adhesives using polyester, polyurethane, etc., but urethane-based or nylon-based solvent-based true melt adhesives are preferred.

Next, the nitrogen space 3 is filled with thermoplastic resin.

As a thermoplastic resin, T1/for example, polyvinyl chloride,
polyethylene, boria g robylene, polystyrene, 2j
? A urethane type or the like is used. Of course, it is not limited to these.

Normally, the glass launch channel member 1 is set in a mold, and thermoplastic resin is injected into the space 3 (
Figure 6).

Example I EP/SBR: The end face of the y'm was surface-treated with a trichloroin cyanuric board.The end face of the hind leg was coated with a nylon-based true melt adhesive, dried, and set in a mold.
VC was injected [7 test pieces were made]. Tensile test failure and clean ° test were conducted on the test piece obtained in this manner.

The tensile test was carried out at room temperature and 80°C, and the breaking strength in normal vortex was 20 Ky/cbl, and that at g 0°C was 2.7 Ky/d. The Cree-1 test was conducted at f6 at 70°C and 80°C, and the deformation rate at 70°C was 1.
The deformation rate at 0% and 80°C was 18%. The above results are shown in Table 1 along with comparative examples. The breaking strength in the tensile test indicates the adhesive strength, and the deformation rate in the IJ-f test indicates the heat resistance.As shown in Table 1, the rubber glass launch channel corner part V according to the present invention
It can be seen that it has both excellent adhesive strength and heat resistance. [2] Expensive hot melt adhesives are only applied to the end faces, and the amount used is extremely small, making them inexpensive.

Comparative Example I EP/SBR rubber is placed in the mold as it is and placed in the mold >J? Filled with vinyl chloride (PVC). The results of the tensile test and creep test are shown in Table 1.

Comparative Example 2 EP/SBR rubber is set in the mold as it is and the EV inside the mold is
A (containing 1428 wt% VA) was injected into the tube. The test rice feeding is shown in Table 1.

Comparative Example 3 A test piece was prepared in the same manner as Comparative Example 2 except that cross-linked EVA was injected instead of EVA. Table 1: Test rice feeding
Shown below.

Comparative Example 4 EP/SBR: The end face of I'm was surface treated with trichloroin cyanuric v2% M solution and set in a mold. A test piece was prepared by injecting a hot melt adhesive containing nylon paste into a mold. When a test was conducted in the same manner as in Example 1, the strength at break at room temperature was 20 Kr/cJ.
, at 80 °C it was rarely 2.7 Ky/ol. The deformation rate at -70°C was 7%, and the deformation rate at 80°C was 14%.

[Brief explanation of the drawing]

1 to 3 are diagrams showing a method of processing a part of the glass launch channel corner of the present inventor, and FIG. 4 is a diagram showing the glass launch channel after processing. FIG. 5 is a diagram showing a method for preparing a test piece. DESCRIPTION OF SYMBOLS 1...Glass launch channel member, 2...End face, 2'...Notch end face, 3...Interwall part, 5...Notch, 6...Rubber, 7...Thermoplastic resin, 10・・・
・Mold, 40...Grass run channel Figure 5 Procedural amendment September 9, 1980 Kazuo Wakasugi, Commissioner of the Patent Office 1 Indication of the case Patent application No. 176409/1982 2 Name of the invention Rubber glass run channel Corner part forming method 3
Relationship with the person making the amendment Patent applicant name Kinugawa Rubber Industries Co., Ltd. 4 Agent address 40 Toranomon, 5-13-1 Toranomon, Minato-ku, Tokyo
Detailed explanation of the invention in the Mori Building specification Column 6 Contents of amendment Yes. (1) Add the following sentence next to "Preferable." on the second line of page 6 of the specification tube. "Among these, when heat resistance is particularly required, we can improve adhesion during heat resistance by adding Incyane I compounds with terminal NGO groups to urethane systems, and melamine compounds such as cyanamide to nylon systems. (2) "With trichloroisocyanuric acid" on page 6, lines 13-14 of the same book can be changed to "with trichloroisocyanuric acid 2%".
"With a solution," he corrected. (3) On page 6, lines 14-15, “nylon-based hot-melt adhesive” was replaced with “nylon-based hot-melt adhesive (
6,6-10, aromatic diamine tripolymer)
% methanol solution”. (4) On page 7, lines 10 to 12, ``Expensive hot melt adhesive is simply applied to the end surface'' has been replaced with ``A solution of expensive hot melt adhesive is applied and dried.'' ,” corrected 203-

Claims (1)

[Claims] A comb made by surface-treating the end face or notched end face of a rubber glass launch channel member and applying hot melt adhesive, and then filling a part of the corner space formed by the opposing end face or notched end face with a thermoplastic resin. How to form part of the manufactured glass lunch yannel corner.