JPH0114423Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sealing structure for glass in a sash that seals between the glass of a curtain wall and the sash, and between the window glass and the sash, and allows fine adjustment of the mounting surface.

Traditionally, the glazing method for glass windows in high-rise buildings has been to use neoprene rubber or EPT rubber (ethylene propylene terpolymer) and seal it with a sealant.
Because the sealant and rubber adhere to each other, the sealant is restrained during an earthquake or typhoon, and large stress is generated on the sealant or backup material itself or on the adhesive interface, causing material breakage and interface peeling. In addition, rubber vulcanization accelerators and the like may cause a chemical reaction with the sealant, making it impossible for the sealant to exhibit its full performance. To prevent this, insulation must be provided between the sealing material and the backup material. Therefore, a material that does not adhere to the sealant, ie, polyethylene, is a material that meets this purpose. In the present invention, this polyethylene foam is used in two layers, one layer having closed cells and the other layer having open cells.

In recent years, reflective glass or heat-absorbing glass has been increasingly used as an energy-saving measure.
If the glass is installed at an angle, images of buildings, etc. will be projected adjacent to the glass, resulting in distorted images. This is not only a problem of poor glass installation, but also inappropriate from an urban aesthetic point of view. For this reason, in the case of glass installation work, there has been a demand for a method of adjusting the installation angle. Various adjustment methods have been proposed, such as molding rubber into a special shape or adding irregularities to the surface.

As shown in Figure 1, this invention solves this problem by using two layers of polyethylene as a back-up material, and using soft open-cell foamed polyethylene on the side that contacts the glass surface. It is designed to be adjustable.

Next, embodiments of the present invention will be described with reference to the drawings.

In FIG. 2, 1 indicates a window glass 2 is a sash.
Backup materials 3, 4, and 5 are arranged.
3, 4, and 5 are all made of foamed polyethylene, but 5 is made of two layers of polyethylene 5' and 5'', and 5'' is made of glass because the closed cell 5' is open and soft. To adjust the installation angle of the glass, for example, prepare back-up materials 4 of various thicknesses in advance, select one that suits the joint dimensions, and apply sealant 7 after insertion. Finish the installation.

FIG. 3 shows another embodiment.

As described above, this invention has the following advantages compared to conventional neoprene rubber and EPT rubber by using two layers of foamed polyethylene as a back-up material for the sealing structure of the glass in the sash. It has some advantages.

(a) It does not adhere to the sealing material, so stress is not applied to the sealing material due to relative displacement between the glass and the sash during an earthquake or typhoon.

(b) Since the sealant does not cause a chemical reaction with the backup material, the sealant does not discolor or soften, or its adhesive strength decreases.

(c) It consists of two layers, one of which is soft, so the angle at which the glass is attached can be finely adjusted at the contact surface with the glass. Therefore, the image can be projected correctly.

(iv) It shows little deterioration even when exposed, and has excellent weather resistance and chemical resistance.

(e) Since it is lightweight, there is no risk of it peeling off or falling off even if it is adhered for a long time with adhesive tape, etc., and it can be easily transported and has good workability.

(f) Easy to cut.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the two-layer backup material of the present invention. Figures 2 and 3 are cross-sectional views of the embodiment of the present invention, and include 3, 4, 5, 8, 9...backup material, 7...
...Sealing material.

Claims (1)

[Scope of utility model registration request] In a structure in which glass is fitted into a sash and the glass and sash are sealed using an elastic sealing material and a back-up material that backs up the glass, at least one of the two back-up materials made of foamed polyethylene on both sides of the glass is independent. A glass sealing structure for a sash, characterized in that it is composed of two layers: a foamed polyethylene board with cells and a foamed polyethylene board with open cells, and is constructed so that the open-celled foamed polyethylene board is in contact with the glass.