JPH0736054Y2 - Seal material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a sealing material which is interposed between members and seals between the members.

[Prior Art] FIG. 4 is a vertical cross-sectional view of a connection portion between conventional sash frames for windows.

Legs 2 extending from the respective facing surfaces of the window sash frame 1A and the window sash frame 1B are connected by screws 10. In this case, since a gap is created between the sash frames 1A and 1B, a sealing structure is provided so that wind and rain do not enter the room side (the right side in the drawing) from here. Conventionally, a backup material 15 is sandwiched and fixed between the sash frames 1A and 1B, and a polysulfide-based or silicone-based sealing material 16 is filled from the outside of the room. Reference numeral 3 in the figure is a glass plate. Further, the backup material 15 does not have a sealing function.

[Problems to be solved by the invention] However, the sealing material 16 is deteriorated by being exposed to ultraviolet rays or temperature change during long-term use,
Alternatively, it may be separated from the sash frame 1A or 1B due to vibration such as an earthquake. Then, there was a drawback that wind and rain would enter the room from the peeled portion.

The present invention has been made in view of the problems of the above-mentioned conventional techniques, and an object thereof is to provide a sealing material having a simple structure, excellent sealing property, and easy to handle.

[Means for Solving the Problems] This invention has been made in order to achieve the above object.
The gist of the present invention is to provide a sealing material which is interposed between members and seals between the members, and which is adhered to at least one surface of the sheet-shaped substrate and has excellent water absorption and is powdery in a non-water-absorbing state. None. A sealing material comprising: a resin that forms a gel in a water-absorbed state.

[Operation] This sealing material is easy to handle and can be mounted easily.

Further, when water penetrates into the sealing material arranged between the members, the resin absorbs the water and swells in the form of gel. Then, the gelled and swollen resin strongly presses against each member, and the members are sealed. The resin does not easily release water once absorbed. Therefore, the members can be reliably sealed, and the entry of wind and rain from there can be prevented.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings of FIGS. 1 to 3. In this embodiment, the sealing material is used for the sealing structure in the connecting portion between the window sash frames.

In FIG. 1, reference numerals 1A and 1B are window sash frames, and glass plates 3 and 3 are attached to the sash frames 1A and 1B, respectively. The sash frames 1A and 1B are arranged such that their side surfaces 4 face each other and are separated from each other by a predetermined dimension, and the leg portions 2, 2 extending from the respective side surfaces 4 are connected to each other by fastening them with screws 10.

Gaskets 11A, 11B are attached to the side surfaces 4 of the sash frames 1A, 1B on the outside of the legs 2 on the outdoor side. More specifically, the side surface 4 of the sash frame 1A is provided with a pair of claws 5, 5 having an L-shaped cross section, and the tips are arranged so as to approach each other. The gasket 11A is made of rubber and has a leg 12 and a head 13. A sealing material 14 is bonded to the bottom surface of the leg 12 with an adhesive. The sealing material 14 is made of a powdery resin having extremely excellent water absorption. This resin is powdery when it is not absorbing water, but it has the property of gelling and swelling when it absorbs water, and the property of once absorbing water does not separate even if some pressure is applied. ing. Specific examples of this resin include KI gel 201K and KI gel 20 manufactured by Kuraray Co., Ltd.
There are 1K-F2 etc. It should be noted that this type of resin is currently used in paper diapers and the like, and in the case of paper diapers, it absorbs urine and hardens into a jelly.

In this way, the leg portion 12 with the sealing material 14 attached to the bottom surface
Is fitted between the claws 5 and 5 of the sash frame 1A, whereby the gasket 11A is fixed to the sash frame 1A. In this installed state, the gasket
The head 13 of the 11A projects toward the sash frame 1B, and the sealing material 14 is pressed against the side surface 4 of the sash frame 1A. In addition, when the gasket 11A is mounted as described above, the resin forming the seal material 14 is in a non-water-absorbing powder state.

The gasket 11B also has the same structure as the gasket 11A, and is fixed to the sash frame 1B by the same mounting structure as described above. Regarding the gasket 11B, the same reference numerals are given to the same mode parts as the gasket 11A, and the description thereof will be omitted.

The head portions 13 and 13 of the gaskets 11A and 11B are arranged opposite to each other, and the sealing material 20 which is the gist of the present invention is sandwiched therebetween.

FIG. 2 is a vertical sectional view of the sealing material 20. The sealing material 20 is
A tape (sheet-shaped substrate) 21 made of cotton-like pulp having water content, and a powdery resin 22 bonded to both surfaces of the tape 21.
It consists of and. The tape 21 is water-soluble. The resin 22 is the same as the resin that constitutes the sealing material 14, is excellent in water absorption, and is powdery in a non-water-absorption state, but has a property of gelling and swelling when absorbing water, The water once absorbed has the property that it does not separate even if some pressure is applied. To bond the resin 22, for example, water-soluble glue is sprayed uniformly on both front and back surfaces of the tape 21, and the powdery resin 22 is evenly attached to the entire surface from above. The glue may be further sprayed on the joined resin 22 so that the resin 22 does not easily come off from the tape 21 during the attachment work of the sealing material 20. If the sealing material 20 is rolled as shown in FIG. 3, it is convenient both when the sealing material 20 is stored and when it is used.

The sealing material 20 in the state of being sandwiched between the gaskets 11A and 11B is pressed by the elastic force of the gaskets 11A and 11B, and the resin 22 is brought into close contact with the tip surface of the head 13 of each gasket 11. ing.

Thus, in the above-mentioned sealing structure, when water enters between the gaskets 11A and 11B from the outdoor side, the resin 20 adhering to both surfaces of the tape 21 of the sealing material 20 absorbs this water and gels and swells. To do. Then, the gelled and swollen resin strongly presses against the head portions 13 of the gaskets 11A and 11B. In particular, in the sealing material 20 of this embodiment, since the tape 21 is water-soluble, the resin gelated and swelled by the invading water, the tape 21 was dissolved, and the gasket 11A, 11B between the gel swelled Filled with resin 22. As described above, the resin 22 does not easily release the water once absorbed. As a result, passage of water and air between the gaskets 11A and 11B is blocked, and a reliable seal is achieved.

When water enters between the leg portions 12 of each gasket 11 and the side surface 4 of each sash frame 1, the resin that constitutes the sealing material 14 absorbs the water, gels and swells, and Since the seal between the 4 and the leg 12 is sealed, intrusion of wind and rain from here is prevented. Regarding the sealing material 14, before or immediately after mounting each gasket 11 on each sash frame 1, artificially positively supplying water to the sealing material 14 to cause the sealing material 14 to gel and swell in advance. You may keep it.

Further, instead of the seal material 14 in the above-mentioned embodiment, the seal material
It is also possible to use 20.

Although the resin 22 is bonded to both surfaces of the tape 21 to form the sealing material 20 in the above-described embodiment, the resin 22 may be bonded to only one surface of the tape 21. Furthermore,
In that case, the surface on which the resin 22 is not adhered may be the adhesive surface, and release paper is attached to the adhesive surface before use,
The release paper may be peeled off and attached at the time of use.

The manner of using the seal material 20 is not limited to the manner of being sandwiched between the gaskets 11A and 11B as in this embodiment.

[Advantages of the Invention] As described above, according to the present invention, since the resin is attached to the base body to form the sealing material, the mounting work of the sealing material can be performed very easily. After mounting, the resin absorbs water and gels and swells, and the gelled and swollen resin strongly presses the members, so that an excellent effect of reliably sealing the members is achieved.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional view when the sealing material of the present invention is used for a sealing structure between window sash frames. Two
FIG. 3 is a longitudinal sectional view of the sealing material, and FIG. 3 is an external perspective view of the sealing material. FIG. 4 is a vertical sectional view of a conventional seal structure between window sash frames. 11A, 11B …… Gasket (member), 20 …… Seal material, 21
…… Tape (base), 22 …… resin.

Claims (1)

[Scope of utility model registration request] 1. A sealing material, which is interposed between members and seals between the members, has a sheet-like base material and is adhered to at least one surface of the base material, has excellent water absorption, and is powdery in a non-water-absorbing state. And a resin that forms a gel in the state of absorbing water, and a sealing material.