JPH07158172A - Fireproof gasket - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a fire-resistant gasket having a thinner wall thickness and a lower manufacturing cost than conventional ones. [Structure] Base part 21 and its base part to be attached to the end surface 11 of the exterior curtain wall 10 for sealing between the opposing end surfaces 11 of the exterior curtain walls 10, 10 such as adjacent PC boards and ALC boards. A fireproof gasket having a hollow seal portion 22 integrally joined to 21 and having a sealing surface 23 having an arcuate cross section, wherein core portions 30, 3 made of a foamable fireproof rubber material are provided on both sides of the hollow seal portion 22.
Protrusions 25 and 25 having 0 embedded therein are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to adjacent PC boards and ALCs.
The present invention relates to a fireproof gasket that seals between end surfaces of exterior curtain walls such as plates.

[0002]

2. Description of the Related Art A description will be given with reference to FIGS. Conventionally, as a fireproof gasket 20 that seals between opposing end surfaces 11, 11 of exterior curtain walls 10, 10 such as adjacent PC boards and ALC boards, those having the following configuration have been used.

Reference numeral 21 denotes an end surface 1 of the exterior curtain wall 10.
1 is a hollow seal portion having a seal surface 23 having an arcuate cross section, which is integrally joined to the base portion 21, and is a hollow seal portion (not shown) facing the fireproof gasket 20. There are two types, that is, a single type that is attached to only one of the opposite end surfaces 11 of 11 and a double type that is attached to both end surfaces 11 and 11, as shown in FIG.

Reference numeral 70 denotes an adhesive or an adhesive tape for attaching the fireproof gasket 20 to the end surface 11, and 80 denotes a sealing material made of a silicone sealant, which is provided at the inner portion between the opposite end surfaces 11, 11 of the exterior curtain wall 10, 10. It's packed. Reference numeral 90 denotes a backup material that supports the sealing material 80 from the outside, and is made of expanded polyethylene.

However, the conventional refractory gasket 20 is
There is a problem that it is necessary to increase the wall thickness and use expensive silicone rubber in order to enhance the fire resistance.

[0006]

The problem to be solved is that the conventional fire-resistant gasket 20 needs to have a thick wall and to use an expensive silicone rubber in order to improve the fire-resistant performance. Is.

[0007]

Means for Solving the Problems An explanation will be given with reference to FIGS. INDUSTRIAL APPLICABILITY The present invention is directed to facing end surfaces 11, 11 of exterior curtain walls 10, 10 such as adjacent PC boards and ALC boards.
A base part 21 and its base part 2 to be attached to the end surface 11 of the exterior curtain wall 10 for sealing the space between them.
A fire-resistant gasket having a hollow seal portion 22 integrally bonded to 1 and having a seal surface 23 having an arc-shaped cross section,
Protrusions 25, 25 in which cores 30, 30 made of a foamable fire-resistant rubber material are embedded are provided on both sides of the hollow seal portion 22.

[0008]

[Examples] Explaining examples, adjacent PC boards
Fireproof gasket 20 for sealing between the facing end faces 11, 11 of the exterior curtain wall 10, 10 such as ALC plate
Is constructed as follows.

That is, 21 is an exterior curtain wall 1
A base portion made of synthetic rubber foam attached to the end surface 11 of 0, 22 is a hollow seal portion integrally connected to the base portion 21, made of synthetic rubber foam, and provided with a sealing surface 23 having an arcuate cross section. There is. 25 and 25 are hollow seal parts 2
Cores 30, 30 made of a foamable refractory rubber material are embedded in the protrusions provided on both sides of the core 2. Although FIG. 4 shows the double type in which the fireproof gaskets 20 and 20 are attached to the facing surfaces 11 and 11 of the exterior curtain walls 10 and 10 facing each other, a single type in which only one of the end faces 11 is attached is adopted. Is also possible.

Reference numeral 70 is an adhesive or adhesive tape for attaching the fireproof gasket 20 to the end face 11 (it is also possible to attach it by using the anchor 26 as shown in FIG. 5 without using an adhesive), and 80 is a silicone sealant. It is a sealing material, and is packed in the back portion between the opposite end surfaces 11, 11 of the exterior curtain wall 10, 10. Reference numeral 90 denotes a backup material that supports the sealing material 80 from the outside, and is made of expanded polyethylene.

The operation will be described. Hollow seal portion 2
The protrusions 25, 25 in which the cores 30, 30 made of a foamable fire-resistant rubber material are embedded on both sides of 2 foam at the time of fire, form a carbonized layer, and shield the flame and heat. Then
The wall thickness can be reduced. Also, by the above means,
Since the heat resistance is improved, it is possible to use inexpensive materials such as CR and EPDM for the main body made of extrusion-molded synthetic rubber foam, eliminating the need to use expensive silicone rubber and significantly reducing manufacturing costs. To be done.

[0012]

Since the present invention is constructed as described above,
Compared with the conventional one, the wall thickness is thinner, it is not necessary to use expensive silicone rubber, and the manufacturing cost is significantly reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a conventional example.

FIG. 2 is a cross-sectional view showing a usage state of a conventional example.

FIG. 3 is a sectional view showing an embodiment of the present invention.

FIG. 4 is a sectional view showing a usage state of an embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a usage state of another embodiment of the present invention.

[Explanation of symbols]

 10 Exterior Curtain Wall 11 End Surface 20 Fire-Resistant Gasket 21 Base 22 Hollow Seal 23 Sealing 25 Protrusion 26 Anchor 30 Core 70 Adhesive or Adhesive Tape 80 Sealant 90 Backup Material

Claims (1)

[Claims] 1. An end face (11, 1) of an exterior curtain wall (10, 10) such as a PC plate, an ALC plate and the like which are adjacent to each other.
Base part (21) attached to the end face (11) of the exterior curtain wall (10), which seals the space between 1)
And a hollow seal portion (22) integrally connected to the base portion (21) and having a sealing surface (23) having an arc-shaped cross section, wherein a foamable fire resistant rubber is provided on both sides of the hollow seal portion (22). A refractory gasket provided with protrusions (25, 25) in which cores (30, 30) made of material are embedded.