JPH1078138A - Gasket for duct flange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide sufficient cushioning property while keeping durability, and facilitate the manufacture by covering the fitted surface of a glass cloth having an adhesive applied to the inner wall surface bonded and fixed so as to enclose a rock wool fiber material with a double-sided tape having a release paper bonded to the surface bonded and fixed to the glass cloth. SOLUTION: A duct flange gasket 1 to be interposed between the flanges of the connecting parts of ducts such as exhaust gas ducts comprises a rock wool fiber material 4 formed into a gasket form having a rectangular section. It also comprises a glass cloth 6 having an adhesive 6 applied to the inner wall surface bonded and fixed so as to enclose the rock wool fiber material 4 in the butted state of both end parts. The butted surfaces of the glass cloth 6 are covered with a double-sided tape having a release paper 7 bonded to the surface bonded and fixed to the glass cloth 6. Thus, the gasket 1 is cut in a dimension capable of being bonded and fixed to one flange of the connecting part, the release paper 7 of the cut gasket 1 is peeled, and the gasket 1 is bonded and fixed to the one flange by the double-sided tape 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasket for a duct flange which is interposed between flanges at a connecting portion of a duct such as a smoke exhaust duct or a general air conditioning duct.

2. Description of the Related Art Conventionally, as a gasket for a duct flange of this type, a cloth tape in which a metal foil such as an aluminum foil is stuck on one side as a whole is used, and the metal foil stuck side is outside and the two ends are abutted. , And a release tape with an adhesive applied to one side is attached to the bent surface,
A tape in which both ends of the tape are joined by the adhesive is used.

[0003]

A conventional gasket for a duct flange is constructed by bending a fabric tape having a metal foil adhered on one entire surface so that the metal foil adhered surface is on the outside and the ends are abutted. Therefore, there are drawbacks that sufficient cushioning properties cannot be obtained, that the production is troublesome, and that the cost is high.

The present invention has been made in view of the above-mentioned conventional drawbacks,
An object of the present invention is to provide a gasket for a duct flange which has sufficient cushioning property and durability, can be easily manufactured, and can be used easily.

The foregoing and other objects and novel features of the invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings. However, the drawings are for explanation only, and do not limit the technical scope of the present invention.

[0006]

In order to achieve the above object, the present invention provides a rock wool fiber material and a glass cloth coated with an adhesive on an inner wall surface adhered and fixed so as to wrap the rock wool fiber material. A gasket for a duct flange is composed of a double-sided tape having a release paper adhered to a surface adhered and fixed to the glass cloth so as to cover a mating surface of the glass cloth.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.

In the first embodiment of the present invention shown in FIGS. 1 to 7, reference numeral 1 denotes the present invention which is interposed between flanges 3 of a connecting portion of a duct 2 such as a smoke exhaust duct or a general air-conditioning duct. The duct flange gasket 1 was bonded and fixed so as to wrap the rock wool fiber material 4 formed in a gasket shape having a rectangular cross section and both ends of the rock wool fiber material 4 in a state of abutting each other. A glass cloth 6 having an adhesive 5 applied to an inner wall thereof, and a glass cloth 6 covering the abutting surface of the glass cloth 6.
And a double-sided tape 8 having a release paper 7 adhered to the surface adhered and fixed.

A gasket 1 for a duct flange having the above structure.
Is manufactured by an automatic molding machine to a fixed length of, for example, 10 meters. Therefore, when used, it is cut into a size that can be bonded and fixed to one flange 3 of the connecting portion, and the cut-off paper of the cut gasket 1 for a duct flange is cut. 7 is peeled off and fixed to one flange 3 with a double-sided tape 8.

At this time, a ring is adhered and fixed to one of the flanges 3 so that no gap is formed at each corner of the flange 3 so that smoke and the like do not come out from the inside to the outside.

In this state, by fastening the flanges 3 and 3 together with a plurality of bolts 9 and nuts 10, the rock wool fiber material 4 is crushed, so that the connection portion can be reliably sealed.

[0012]

Next, different embodiments of the present invention shown in FIGS. 8 to 24 will be described. In addition,
In the description of the different embodiments of the present invention, the same components as those of the first embodiment of the present invention are denoted by the same reference numerals, and duplicate description will be omitted.

The second embodiment of the present invention shown in FIGS. 8 to 13 is mainly different from the first embodiment of the present invention in that a rock wool fiber material formed in a rectangular shape with a thin section is used. 4A, the double-sided tape 8 to which the release paper 7 is adhered is adhered and fixed so as to cover the butt surface, and then a bolt insertion hole 12 is formed at a position corresponding to the plurality of bolt insertion holes 11 of the flange 3. Thus, even with the gasket 1A for a duct flange configured as described above, the same operation and effect as those of the first embodiment of the present invention can be obtained.

The third embodiment of the present invention shown in FIGS. 14 to 18 is mainly different from the first embodiment of the present invention in that the rock wool fiber material 4B is bonded and fixed at both ends. When the gasket 1B for a duct flange configured as described above is covered with the glass cloth 6 thus made,
The same functions and effects as those of the first embodiment of the present invention can be obtained.

The fourth embodiment of the present invention shown in FIGS. 19 to 24 is mainly different from the third embodiment of the present invention in that a double-sided tape 8 to which a release paper 7 is adhered is adhered. After fixing, a plurality of bolt insertion holes 1 in the flange 3
1 in that a bolt insertion hole 12 is formed at a position corresponding to 1.
With the gasket for duct flange 1C formed in this way, the same operation and effect as those of the third embodiment of the present invention can be obtained.

[0016]

As apparent from the above description, the following effects can be obtained in the present invention.

(1) A rock wool fiber material, a glass cloth coated with an adhesive on an inner wall surface adhered and fixed so as to wrap the rock wool fiber material, and the glass cloth so as to cover a mating surface of the glass cloth. Since it is composed of a double-sided tape with a release paper adhered to the surface adhered and fixed to the glass wool, the rock wool fiber material and the glass cloth are adhered and fixed by the adhesive applied to the inner wall surface of the glass cloth. So, while preventing the gap between the glass cloth and the rock wool fiber material,
Leakage of smoke and the like can be efficiently prevented.

(2) According to the above (1), since the rock wool fiber material is used, sufficient cushioning properties can be obtained, and reliable sealing can be performed.

(3) According to the above (1), since the glass cloth is used, the durability against heat, gas and the like can be improved.

(4) Claims 2 and 3 also have the above (1) to (3).
The same effect can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a first embodiment of the present invention.

FIG. 2 is a plan view of the first embodiment of the present invention.

FIG. 3 is a front view of the first embodiment of the present invention.

FIG. 4 is a bottom view of the first embodiment of the present invention.

FIG. 5 is a side view of the first embodiment of the present invention.

FIG. 6 is an explanatory diagram of an attached state according to the first embodiment of the present invention.

FIG. 7 is an explanatory diagram of a use state of the first embodiment of the present invention.

FIG. 8 is an explanatory diagram of a second embodiment of the present invention.

FIG. 9 is a plan view of a second embodiment of the present invention.

FIG. 10 is a front view of a second embodiment of the present invention.

FIG. 11 is a bottom view of the second embodiment of the present invention.

FIG. 12 is a side view of the second embodiment of the present invention.

FIG. 13 is a sectional view taken along the line 13-13 in FIG. 9;

FIG. 14 is an explanatory diagram of a third embodiment of the present invention.

FIG. 15 is a plan view of a third embodiment of the present invention.

FIG. 16 is a front view of a third embodiment of the present invention.

FIG. 17 is a bottom view of the third embodiment of the present invention.

FIG. 18 is a side view of the third embodiment of the present invention.

FIG. 19 is an explanatory diagram of a fourth embodiment of the present invention.

FIG. 20 is a plan view of a fourth embodiment of the present invention.

FIG. 21 is a front view of a fourth embodiment of the present invention.

FIG. 22 is a bottom view of the fourth embodiment of the present invention.

FIG. 23 is a side view of the fourth embodiment of the present invention.

FIG. 24 is a sectional view taken along the line 24-24 in FIG. 20;

[Explanation of symbols]

 1, 1A, 1B, 1C: Gasket for duct flange, 2: Duct, 3: Flange, 4, 4A, 4B: Rock wool fiber material, 5: Adhesive, 6: Glass cloth, 7: Release paper, 8: Both sides Tape: 9: bolt, 10: nut, 11: bolt insertion hole, 12: bolt insertion hole.

Claims (3)

[Claims] The present invention relates to a rock wool fiber material, a glass cloth coated with an adhesive on an inner wall surface adhered and fixed so as to wrap the rock wool fiber material, and a glass cloth covering the mating surface of the glass cloth. A gasket for a duct flange, comprising a double-sided tape having a release paper adhered to an adhesively fixed surface. 2. A rock wool fiber material, a glass cloth coated with an adhesive on an inner wall surface which is bonded and fixed so that both ends overlap and wrap the rock wool fiber material, and a mating surface of the glass cloth. A gasket for a duct flange, comprising a double-sided tape having a release paper adhered to a surface adhered and fixed to the glass cloth. 3. A rock wool fiber material formed in a gasket shape, a glass cloth coated with an adhesive on an inner wall surface which is adhesively fixed so as to wrap the rock wool fiber material at both ends in a butt state, and the glass A gasket for a duct flange, comprising: a double-sided tape having a release paper adhered to a surface adhered and fixed to the glass cloth so as to cover a butt surface of the cloth.