JP3366982B2 - Fireproof gasket - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjacent PC board / ALC.
The present invention relates to a fire-resistant gasket for sealing between end faces of an exterior curtain wall such as a plate. 2. Description of the Related Art A description will be given with reference to FIGS. Conventionally, a fireproof gasket 20 having the following configuration has been used as a fireproof gasket 20 for sealing between opposing end surfaces 11, 11 of exterior curtain walls 10, 10, such as adjacent PC boards and ALC boards. [0003] 21 is an end surface 1 of the exterior curtain wall 10
A base portion 22 attached to 1 is a hollow seal portion integrally provided with the base portion 21 and having a sealing surface 23 having an arc-shaped cross section. Although not shown, a fireproof gasket 20 faces the exterior curtain wall 10, There are two types, a single type that is attached to only one of the opposite end faces 11 and 11 and a double type that is attached to both end faces 11 and 11, as shown in FIG. Reference numeral 70 denotes an adhesive or adhesive tape for attaching the refractory gasket 20 to the end face 11, and reference numeral 80 denotes a sealing material made of a silicone sealant. It is packed. Reference numeral 90 denotes a backup material for supporting the sealing material 80 from outside, and is made of foamed polyethylene. However, the above-mentioned conventional refractory gasket 20
In order to enhance the fire resistance performance, there is a problem that it is necessary to increase the wall thickness and use expensive silicone rubber. [0006] The problem to be solved is that the conventional fire-resistant gasket 20 needs to be made thicker and use expensive silicone rubber in order to improve the fire-resistant performance. There is that. A description will be given with reference to FIGS. 3 and 4. The present invention relates to opposing end faces 11, 11 of exterior curtain walls 10, 10 such as adjacent PC boards and ALC boards.
The base 21 and the base 2 attached to the end surface 11 of the exterior curtain wall 10 for sealing the space between
1. A fire-resistant gasket comprising a hollow seal portion 22 integrally joined to 1 and having a sealing surface 23 having an arc-shaped cross section,
On both sides of the hollow seal portion 22, there are provided projections 25, 25 in which core portions 30, 30 made of foamable refractory rubber material are embedded. An embodiment will be described.
A fire-resistant gasket 20 for sealing between opposing end faces 11 of exterior curtain walls 10 such as an ALC plate.
Is configured as follows. That is, 21 is an exterior curtain wall 1
A base portion 22 made of a synthetic rubber foam attached to the end surface 11 of the reference numeral 0 is a hollow seal portion integrally joined to the base portion 21 and made of a synthetic rubber foam and having a sealing surface 23 having an arc-shaped cross section. I have. 25, 25 are hollow seal portions 2
The protrusions provided on both sides of the core 2 embed cores 30, 30 made of a foamable refractory rubber material. FIG. 4 shows a double type in which the refractory gaskets 20, 20 are attached to the opposing surfaces 11, 11 of the facing exterior curtain walls 10, 10, but a single type, in which only one of the end surfaces 11 is attached, is adopted. Is also possible. Reference numeral 70 denotes an adhesive or an adhesive tape for attaching the refractory gasket 20 to the end face 11 (although the adhesive can be attached using an anchor 26 as shown in FIG. 5 without using an adhesive), and 80 is made of a silicone sealant. It is a sealing material, which is packed in a deep portion between the opposite end faces 11, 11 of the exterior curtain walls 10, 10. Reference numeral 90 denotes a backup material for supporting the sealing material 80 from outside, and is made of foamed polyethylene. The operation will be described.
The protrusions 25, 25 buried with cores 30, 30 made of foamable refractory rubber material on both sides of foam 2, foam in the event of a fire, form a carbonized layer, and block fire and heat. And
The thickness can be reduced. Also, by the above means,
Improved heat-resistant performance enables the use of inexpensive materials such as CR and EPDM for the main body made of synthetic rubber foam to be integrally molded by extrusion, eliminating the need for expensive silicone rubber and significantly reducing manufacturing costs. Is done. Since the present invention is configured as described above,
Compared with the conventional one, the thickness is thinner, and it is not necessary to use expensive silicone rubber, and the manufacturing cost is significantly reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a conventional example. FIG. 2 is a cross-sectional view illustrating a use state of a conventional example. FIG. 3 is a sectional view showing one embodiment of the present invention. FIG. 4 is a sectional view showing a use state of the embodiment of the present invention. FIG. 5 is a sectional view showing a use state of another embodiment of the present invention. DESCRIPTION OF SYMBOLS 10 Exterior curtain wall 11 End face 20 Refractory gasket 21 Base 22 Hollow seal 23 Seal surface 25 Projection 26 Anchor 30 Core 70 Adhesive or adhesive tape 80 Sealing material 90 Backup material

Claims (1)

(57) Claims 1. Opposing end faces (11, 1) of exterior curtain walls (10, 10) such as adjacent PC boards and ALC boards.
1) A base portion (21) to be attached to an end surface (11) of the exterior curtain wall (10), which seals between the portions.
And a fire-resistant gasket provided with a hollow seal portion (22) integrally bonded to a base portion (21) thereof and having a sealing surface (23) having an arc-shaped cross section, on both sides of the hollow seal portion (22). A fire-resistant gasket provided with protrusions (25, 25) in which cores (30, 30) made of a material are embedded.