JP2003082950A - Cut-off material for sash - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cut-off material for a sash frame connecting part, simple in structure, having superior strength, workability and durability and allowed to be separated and reused. SOLUTION: A reinforcement layer formed of a resin film is superposed on one cut-off layer formed of a sheet material having rubber elasticity or foam material. The sheet material having rubber elasticity used for the cut-off layer is preferably one of EPDM (ethylene propylene diene rubber), CR (chloroprene) rubber, and butyl rubber or mixed material thereof, and the resin film used in the reinforcement layer is preferably one of PET (polyethylene terephthalate) film, polyolefin film and vinyl film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water blocking material used for a connecting portion of a sash made of an aluminum alloy extruded profile or a resin extruded profile.

[0002]

2. Description of the Related Art Aluminum alloy extruded profiles and resin extruded profiles are used individually or in combination for door frames and window frames attached to the openings of buildings, etc. The upper and lower sash horizontal frames are abutted against the vertical frame so that they are connected in a substantially rectangular shape.

An example of connecting the corners will be described with reference to FIG. 1. The sash horizontal frame 20 is formed by cutting a long extruded profile, and the sash vertical frame 10 is abutted so as to abut against the cut surface. Then, the engaging member 32 such as a screw is connected to the screw hole 21 provided in the cross section of the sash horizontal frame through the mounting hole 31 opened in the vertical frame of the sash to assemble. At the time of this connection, the water blocking material 10 is sandwiched so that rainwater or the like does not leak to the inside of the room through the connecting portion. However, the sash horizontal frame requires a draining line in the indoor and outdoor directions, a rail for external shoji, a rail for internal shoji, a stand-up piece surrounding the outer circumference of the frame, etc.
Since it has a complicated cross-sectional shape, protrusions such as burrs 22 are likely to occur due to cutting or pressing of the shape material,
Moreover, in recent years, the wall thickness of the profile itself tends to be thin, and when inserting a waterproof material between the vertical frame of the sash and the horizontal frame of the sash and tightening it with a locking member such as a screw, protrusions such as burrs There was a problem of penetrating through the waterproof material and lack of strength against the thin wall thickness of the profile.

As a water blocking material for solving the above-mentioned problems, conventionally, a water blocking layer 51 as shown in FIG. It is known that a layer having a soft hardness is provided and a double water blocking layer having a hard core portion is provided, and a water blocking layer made of a foam material and a non-woven fabric is used as a base material.

However, the above-mentioned one in which the thread and the like are contained in the water blocking layer not only complicates the manufacturing process of the water blocking material and becomes expensive, but also connects the shapes of the water blocking materials. FIG. 2 (a) is a plan view of the blade of the die when die-cutting is performed according to the part, and FIG. 2 (b) is a sectional view taken along the line A-A. Using the mold, Fig. 2 (b)
As shown in (3), the thread 50 or the like was caught between the blades, which was likely to cause a defective shape. Particularly in recent years, the cross-sectional shape of the sash frame has become complicated, and defective shape has become an important technical issue.

In the case of using a paper-based non-woven fabric as a base material, the strength of the paper-based non-woven fabric itself is weak, and moreover, the aluminum alloy profile is generally subjected to acrylic-based electrodeposition coating with high adhesiveness. In many cases, if it is pasted by mistake, the paper-based non-woven fabric will stick to the sash side, and the base material will tear off from the water blocking layer of the water blocking material again.
In addition to being unable to re-fix and fix, there was a technical problem that unnecessary dust was generated.

[0007]

SUMMARY OF THE INVENTION In view of the above situation, the present invention provides a waterproofing material for a sash frame connecting portion which has a simple structure and is excellent in strength, workability, and durability and which can be peeled and reused. For the purpose of provision.

[0008]

DISCLOSURE OF THE INVENTION The present invention focuses on providing a reinforcing layer of a resin film in place of eliminating core impregnation of a core material such as a thread in order to improve workability during punching. Is. According to the first aspect of the present invention, a reinforcing layer made of a resin film is superposed on a water blocking layer made of a sheet material having rubber elasticity. In a preferred embodiment of the water blocking layer, the sheet material having rubber elasticity used for the water blocking layer is EPDM (ethylene propylene diene rubber) based rubber, CR (chloroprene) based rubber, or butyl based rubber. Alternatively, a single water blocking layer made of these mixed materials is used. In the invention according to claim 3, as a preferable constitution of the reinforcing layer, the resin film used for the reinforcing layer is PE.
Any one of T (polyethylene terephthalate) film, polyolefin film and vinyl film was used. According to a fourth aspect of the present invention, instead of the sheet material having rubber elasticity, the water blocking layer is formed by superposing a reinforcing layer made of a resin film on one water blocking layer of a sheet material made of a foam material. In a fifth aspect of the present invention, the foam material used for the water blocking layer is preferably one layer of foam material made of EPDM (ethylene propylene diene rubber) rubber-based, CR (chloroprene) rubber-based, or polyolefin resin. .

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION As a preferred embodiment of the present invention, FIG. 3 shows a structural example of a water blocking material 10 according to the present invention.
A PET (polyethylene terephthalate) film is formed on the water blocking layer 11 made of a sheet material such as EPDM (ethylene propylene diene rubber) type rubber, CR (chloroprene) type rubber or butyl type rubber using an acrylic resin type adhesive 13a. It was laminated as a reinforcing layer 12. In addition,
It may be directly welded without using an adhesive or other adhesive may be used. On the back surface of the PET film, which is a reinforcing layer, a release paper 14 is provided via an adhesive 13b for attaching to the sash frame.
It is used by sticking to one side of the sash frame to be peeled off and connected after punching into a required shape.

[0010]

EFFECTS OF THE INVENTION In the water-stopping material of the present invention, the resin film is superposed on the elastic water-stopping layer for ensuring the watertightness as a reinforcing layer, so that the sash frame is connected by the locking member such as a screw. Prevents penetration due to protrusions such as burrs when
The required strength and durability can be easily obtained even when tightened strongly. Further, since no yarn or non-woven fabric is used, it is excellent in processability, and it is inexpensive because of a simple structure in which one reinforcing layer is provided on one waterproof layer, and is excellent in reusability for peeling.

[Brief description of drawings]

FIG. 1 shows a connection structure of sash frames.

FIG. 2 shows a structural example of a punching die for a water blocking material.

FIG. 3 shows a structural example of a water blocking material according to the present invention.

FIG. 4 shows a structural example of a conventional water blocking material.

[Explanation of symbols]

10 Water blocking material 11 Water stop layer 12 Reinforcing layer 13a, 13b Adhesive layer (adhesive) 14 Release paper 20 sash horizontal frame 21 screw hole 22 Bali 30 sash vertical frame 31 mounting holes 32 Locking member (screw) 40, 41 type blade Fifty threads 51 Conventional Water Stop Layer 52 Adhesive layer 53 release paper

Claims (5)

[Claims] 1. A water blocking material for a sash frame connecting portion, wherein a reinforcing layer made of a resin film is superposed on one water blocking layer made of a sheet material having rubber elasticity. 2. A sheet material having rubber elasticity used for the water blocking layer is any one of EPDM (ethylene propylene diene rubber) type rubber, CR (chloroprene) type rubber and butyl type rubber, or a single layer made of a mixture thereof. The water blocking material of the sash frame connecting part according to claim 1. 3. The resin film used for the reinforcing layer is PET.
The water blocking material for a sash frame connecting portion according to claim 1, which is one of a (polyethylene terephthalate) film, a polyolefin film, and a vinyl film. 4. A waterproof material for a sash frame connecting portion, wherein a reinforcing layer made of a resin film is laminated on one waterproof layer of a sheet material made of a foam material. 5. A sheet material made of a foam material used for the water blocking layer is one layer of foam material made of EPDM (ethylene propylene diene rubber) rubber-based, CR (chloroprene) rubber-based, or polyolefin resin. The water blocking material of the sash frame connecting part according to claim 4.