JPH1046693A - Gasket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with a difference in a gap and also cope with the same standard size even though the gap width of a series of joints is different between both end portions by providing a long-sized body having a cross-sectional construction of a standard size having fin portions in axial direction of a coupling portion in depth direction against gaps and also providing notches for adjusting fin width, which can be cut by hand, for the fin portion with a long-sized body. SOLUTION: A gasket is constituted with a long-sized body having a cross-sectional construction of a standard size having fin portions 2 and 3 in axial direction for a coupling portion 1 in depth direction relative to the gap. Notches 21 and 22, which can be cut by hand, are formed in long-size direction for adjusting the fin width for fin portions 2 and 3 of a long-sized body. When using this gasket between exterior wall panels, waterproofing, fireproofing or decoration for a building, fin portions 2 and 3 are provided at both ends of a coupling portion 1 in the cross-sectional construction, and elastic holding can be realized by pushing and attaching in gaps formed between exterior wall panels through the fin portions 2 and 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasket suitable for waterproofing, fire prevention, decoration, etc. between outer wall panels and joints in panels in buildings such as prefabricated houses.

[0002]

2. Description of the Related Art Conventionally, as a dry gasket which is mounted for the purpose of waterproofing, fire prevention, decoration, etc. between outer wall panels in a building such as a prefabricated house or a joint in a panel, a connecting portion in a depth direction with respect to a gap. There have been known various types of long bodies having a cross-sectional structure of a prescribed size provided with a fin portion in the width direction and formed in a close contact form between panels or the like by using a polymer such as rubber or resin. Dry gaskets do not require drying or curing processes compared to wet applications such as silicone / polysulfide / polyurethane sealing materials.
It has the advantage that it can be constructed even in rainy weather and the construction period can be shortened.

[0003] The gap width of joints and the like is relatively variable even at the design stage, and it is difficult to set as designed even at the construction stage at the site, and the gap width varies. There are cases. In general, in dry gaskets, various types of prescribed sizes are prepared in advance so that the difference in gap width can be dealt with, and although it is necessary to prepare a plurality of gaskets of different sizes, the gap width It is relatively easy to deal with the differences.

However, the gap width of a series of joints and the like may be different at both ends. In such a case, a gasket adapted to the gap width at one end becomes a gasket of a smaller size than the other end or the intermediate portion. There is a problem that it is difficult to cope with the difference in the gap width in the case. It is also conceivable to switch to a gasket of a different size from the middle of the joint, etc., but in that case, it is necessary to connect a gasket of a different size, in addition to hindering the advantage of a dry gasket of simple installation, It is difficult to perform reliable connection processing while maintaining the waterproof and fireproof functions. Not applicable for decorative purposes.

[0005]

The present invention can cope with the difference in the gap width at the design stage and the like, and has the same specified size even when the gap width of a series of joints is different at both ends. The task is to develop a dry gasket that can be dealt with without need.

[0006]

According to the present invention, there is provided a long body having a cross-sectional structure of a prescribed size having a fin portion in a width direction with respect to a gap at a connecting portion in a depth direction with respect to the gap.
A gasket characterized by having a cutable portion for adjusting a fin width which can be cut in a longitudinal direction.

[0007]

According to the present invention, the difference in the gap width can be dealt with by adjusting the fin width through the cut, and the fin width can be easily adjusted by hand-cutting work. In addition to the gap width difference, a continuous or stepwise gap width difference in a series of joints or the like can be dealt with by using a gasket of the same specified size without the need for a connection process. Therefore, while maintaining the advantages of the dry gasket that is easily mounted, a highly reliable sealing process that maintains functions such as waterproofing, fire prevention, and decoration can be efficiently achieved with good workability.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A gasket according to the present invention comprises a long body having a specified cross-sectional structure having a fin portion in a width direction with respect to a gap at a connecting portion in a depth direction with respect to the gap. And a notch for adjusting the width of the fin in the longitudinal direction. Examples thereof are shown in FIGS. 1 is a connecting part, 2, 3 are fins, 21, 22, 23, and 24 are cuts. In addition, 11 is a core material.

In the present invention, except that a cutable portion for adjusting the width of the fin is provided in the longitudinal direction in the fin portion.
A gasket of an appropriate form made of a long body having a cross-sectional structure of a specified size having a connection portion in the depth direction and a fin portion in the width direction with respect to the gap can be provided.

[0010] Therefore, a suitable form similar to a conventional gasket used for waterproofing, fire prevention, decoration, or the like can be provided between outer wall panels and joints in panels in a building such as a prefabricated house. In general, a cross-sectional structure having fin portions 2 and 3 at least at both ends of the connecting portion 1 as shown in the figure, and a form capable of being elastically held by being pushed into a gap formed between outer wall panels or the like via the fin portion. Is done. The fin is 3 if necessary according to the gap size to be applied.
It can also be provided at more than locations.

The connecting portion and the fin portion can be formed of a suitable elastic material having water-blocking properties for the purpose of, for example, elastic insertion into the gap of the gasket, and generally rubber or synthetic resin is used. By the way, examples of the rubber-based material include natural rubber and synthetic rubber corresponding thereto, silicone rubber, urethane rubber, styrene / butadiene rubber, polyisoprene, polyisobutylene, chloroprene, butyl rubber, recycled rubber, and styrene / isoprene block copolymer. Coal, styrene-butadiene block copolymer, styrene-ethylene
Butadiene block copolymer, ethylene propylene rubber, ethylene propylene diene rubber (EPDM),
Examples include NR, NBR, and a blend thereof.

Examples of synthetic resin materials include polyolefins such as polyethylene and polypropylene, polyvinyl chloride, polyamide, polyester, chlorinated polyethylene, chlorosulfonated polyethylene, polyurethane, acrylic polymers, polystyrene, and polytetrafluoroethylene. , Polyvinyl fluoride, and blends thereof.

The connecting portion and the fin portion can be formed as a lump or foam of such a rubber-based or synthetic resin-based material, and the connecting portion and the fin portion can be formed of different materials, or can be composed of a superposed layer of different materials. It can also be a multilayer structure.

Further, as shown in FIG. 2, a core member 11 may be provided inside a connecting portion or the like. The core material is
Functions for easy installation work between panels, etc., while suppressing expansion and shrinkage due to temperature changes, preventing gaps due to gasket waving at panel interfaces, etc., and preventing protrusion from between panels etc. The purpose is to give.

The core material can be formed of a metal such as stainless steel or copper, a fiber product such as polyimide fiber or glass fiber, or an appropriate material such as FRP. Depending on the purpose of use such as the space form and the like, it is appropriately determined, for example, a linear body such as a rod or a plate having an appropriate cross-sectional shape such as a circle, a triangle, a square or a hexagon, or another polygon. can do.

As described above, the cross-sectional structure of the connection portion and the fin portion of the gasket can be appropriately determined according to the gap to be applied. Therefore, the thickness based on the cross-sectional structure can be appropriately determined according to the purpose of use and the like, and the gasket can be a long body having the same cross-sectional structure and a specified size.

In the present invention, the number of cuts which can be cut by hand in the longitudinal direction of the fin portion for the purpose of adjusting the fin width may be one or two or more, depending on the desired adjustment width of the fin portion. Can be arranged at an appropriate position. Generally, it is provided at a position symmetrical to the right and left of the fin portion with respect to the connection portion. In addition, it is preferable to provide cuts at intervals of 20 mm or less, particularly 1 to 10 mm, particularly 1.5 to 5 mm, from the viewpoint of high-precision sealing or the like.

The depth of the cut is 4 to 75% of the thickness of the fin, or 10 mm or less in view of the ease of hand cutting.
It is preferable to leave a thickness of 5 mm or less, especially 1 to 3 mm. If the remaining thickness is less than 4% or more than 10 mm, the cutability is poor and the parts other than the cut may be avoided, and the function of the gasket may be lost. The notch may be deformed to impair the appearance or the like, or the cut portion may crack over time due to seasonal temperature changes.

It is preferable to provide the cuts 23 and 24 on the pressing side of the fin 2 as shown in FIG. 2 from the viewpoint of preventing deformation at the cut when the gasket is mounted. According to this, when the gasket is attached, a stress that compresses the notch acts, so that deformation such as bending through the notch does not easily occur. Therefore, in the present invention, cuts can be provided on both sides of the fin.

The production of the gasket of the present invention can be performed by an appropriate method such as an extrusion molding method through a predetermined die. The cut can be made at the time of the production, or the fin portion can be produced after the production. You can also enter against.
The obtained gasket can be preferably applied to, for example, sealing treatment of a gap such as an interface or joint formed between tiles or panels forming outer walls or walls of a building, and particularly for a building such as a prefabricated house. It can be preferably applied to interfaces and gaps between outer wall forming materials.

[0021]

【Example】

Example 1 Based on FIG. 1, the fin portion 2 on the pressing side is made of chlorosulfonated polyethylene, the connecting portion 1 and the fin portion 3 on the first side are made of EPDM rubber having a hardness of 70 degrees, and a is 18 mm, b
Is 14 mm, c is 10 mm, and f is 14 mm, and 50% indentation (d: 1 m) of the thickness (e: 2 mm) of each of the two strips is provided on the left and right sides of the fin portion 2
m), a gasket consisting of a two-layer extrudate was obtained.

Embodiment 2 Based on FIG. 1, the fin portion 2 on the pressing side is made of chlorosulfonated polyethylene, the connecting portion 1 and the fin portion 3 on the first side are made of silicone rubber having a hardness of 65.
b is not present, c is 10 mm, f is 14 mm, and a cut of 20% of the thickness (e: 2 mm) of each of the fins 2 (d: 0.
A gasket having a thickness of 4 mm) was obtained according to Example 1.

COMPARATIVE EXAMPLE 1 A gasket having substantially no cut (wall thickness e: 0.3% of 2 mm and d: 0.06 mm) was obtained according to Example 1.

Comparative Example 2 A gasket was obtained in the same manner as in Example 1 except that the cut was made 80% (d: 1.6 mm) of the wall thickness (e: 2 mm).

Evaluation Test Hand Cutability The gaskets obtained in Examples and Comparative Examples were cut by hand through cuts located at intervals c in FIG. 1 and cutability at that time was examined.

The gasket having a length of 3 m was subjected to a hand-cutting process for 1.5 m on one side in accordance with the above, and the cut-off was performed on panels 4 and 5 shown in FIG.
Length 3m, g8mm, h16mm, depth 17 formed between
The hand-cut part and the g-part were mounted on the joints of mm in correspondence with each other, and the mounting properties (sealability and appearance) were examined.

The results are shown in the following table.

In the above table, in Comparative Example 1, it was impossible to cut by hand with high width accuracy, so that mounting was impossible, and in Comparative Example 2, it was mounted in a bent state at the cut portion, and the appearance and sealability were poor. In addition, when the cut is formed on the pressing side according to Comparative Example 2 as shown in FIG.
Good bendability without bending was achieved.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment.

FIG. 2 is a sectional view of another embodiment.

FIG. 3 is an explanatory plan view of an example of a joint to be mounted;

[Explanation of symbols]

1: Connection part 2, 3: Fin part (21, 22, 23, 2
4: Notch)

Claims (2)

[Claims] 1. An elongated body having a prescribed size cross-sectional structure having a fin portion in a width direction with respect to a gap at a connecting portion in a depth direction with respect to the gap, and a fin portion for adjusting a fin width. A gasket characterized by having a notch that can be cut in the longitudinal direction. 2. The gasket according to claim 1, wherein the depth of the cut is 4 to 75% of the thickness of the fin.