JPH10131314A - Thermal insulation waterproof material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain excellent waterproof property and adhesion by applying mold replacing treatment to one side of a thermal insulating foam and, at the same time, forming a thermal insulation waterproof material having a waterproof rubber adhesive layer to the other side. SOLUTION: Both sides of a thermal insulating foam 2 of a bridged polyethylene foam having an expansion ratio of 5-50 are used as skin layers 1, and silicon baking treatment is applied on one side of the thermal insulating foam 2 to form a mold releasing treatment surface 3. Nonvulcanized butyl having a penetration of 50 is laminated on the other side of the thermal insulating foam 2 to mold a thermal insulation waterproof material 10 by providing a waterproof rubber adhesive layer 4, and the thermal waterproof material 10 is wound and is kept before it is used. Accordingly, adhesion of rubber to an adhered is stabilized to promote greatly water resistance, and since there is no dust in mold releasing paper, natural environment can be also protected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-sided adhesive tape used for heat insulation and waterproofing in buildings.

[0002]

2. Description of the Related Art Conventionally, a heat insulating foam used as a heat insulating material in a building is provided with an adhesive layer by applying an adhesive such as acrylic having a thickness of 0.2 mm or less on one side, and using this adhesive layer to construct a work site. It is configured so that it can be freely attached to. A release paper is provided on the adhesive layer to protect the adhesive layer when the heat insulating material is not used.

[0003]

However, since the acrylic pressure-sensitive adhesive layer has a polarity in its cross-linked structure and reacts with moisture to lose its adhesive strength, the function of this pressure-sensitive adhesive layer is temporary,
If it is not physically fixed later, there is a disadvantage that the heat insulating material will peel off. Further, since the release paper has a united structure of polyethylene film and paper, it cannot be generally discarded as garbage, but becomes industrial waste, and its disposal has been a problem. Therefore, an object of the present invention is to solve the above-mentioned conventional inconveniences, to provide a heat-insulating waterproofing material which does not require a release paper and is excellent in waterproofness and adhesiveness.

[0004]

The heat insulating and waterproofing material of the present invention comprises:
It is characterized in that a release treatment is performed on one side of the heat insulating foam and a waterproof rubber adhesive layer is provided on the other side. Further, the heat insulating and waterproofing material according to claim 2 is characterized in that the release treatment surface side of the heat insulating foam is a skin layer. Claim 3
The heat-insulating waterproof material described above is characterized in that the waterproof rubber adhesive layer side of the heat-insulating foam is also a skin layer. The heat insulating and waterproofing material according to claim 4, wherein the heat insulating foam has a foaming ratio of 5
It is characterized by being a polyethylene foam of up to 50 times. The heat insulating and waterproofing material according to claim 5 is characterized in that the waterproof rubber adhesive layer is an uncrosslinked butyl rubber.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The insulating foam is not particularly limited as long as it is a waterproof insulating foam.
For example, foamed plastics such as crosslinked polyethylene, polypropylene, and polystyrene, and foamed rubbers such as urethane, chloroprene, and ethylene propylene terpolymer can be used.

The foam may be closed cells or open cells, but closed cells are preferred from the viewpoint of waterproofness. The expansion ratio at this time is preferably about 5 to 50 times. This is because if the expansion ratio is less than 5 times, it is too hard and the followability is poor, and if it exceeds 50 times, the strength is weak and there is a problem in waterproofness.

[0007] By performing a release treatment on one side of the heat-insulating foam, a heat-insulating waterproofing material provided with a waterproof adhesive layer on the other side can be freely wound. What is necessary is just to perform excellent silicon release processing. In order to perform silicon baking, it is preferable to use a cross-linked polyethylene having a small heat shrinkage and excellent heat resistance. In addition, it is preferable in terms of the release treatment that the heat-insulating foam is provided with a skin layer capable of being subjected to a release treatment at least on a release treatment surface.

The rubber adhesive layer provided on the other surface of the heat-insulating foam is preferably made of butyl rubber which does not react with water and has excellent waterproof properties and strong adhesive strength. In particular, use of uncrosslinked butyl rubber is preferred. preferable. In particular, in order to improve hand separation and facilitate work, it is preferable to use an uncrosslinked butyl rubber having a penetration of 40 to 50. It is preferable that the rubber adhesive layer has a thickness of 0.5 mm or more from the viewpoint of unevenness control. It is preferable to provide a skin layer or an insulating layer equivalent thereto on the rubber adhesive layer side of the heat insulating foam.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a heat insulating and waterproofing material according to the present invention. (Example 1) Crosslinked polyethylene 3 of both skin layers 1 and 1
A heat-insulating foam (5 mm thick) 2 of 0-fold foaming is prepared, one side of which is subjected to silicon baking treatment to form a mold release treated surface 3, and the other surface is formed of non-vulcanized butyl (thickness: 50). 1.0 mm) to form a waterproof rubber adhesive layer 4,
As shown in FIG. The heat-insulating and waterproofing material 10 configured as described above was wound as shown in the drawing, and could be stored before use without using a separator.

(Comparative Example 1) A polyethylene cross-linked 30-fold foam (5 mm thick) having a double-sided skin layer was prepared, a silicon baking treatment was performed on one side of the foam, and an acrylic adhesive layer 7 μm was laminated on the other side. It was created.

Next, when the tensile strength of the heat insulating and waterproofing material of Example 1 and Comparative Example 1 was measured, each tensile strength was 3.5 k.
g / cm width and 2.0 kg / cm width.
In the case of Comparative Example 1, the strength was increased about 1.5 times as compared with that of Comparative Example 1. When measured for zero span strength, the width was 2.6 kg / cm and 1.5 kg / c, respectively.
m, the strength of Example 1 is about 1.7 times higher than that of Comparative Example 1, and the heat insulating and waterproofing material of Example 1 is a heat insulating material as compared with that of Comparative Example 1. It was confirmed that the function to reinforce was added.

[0012] Incidentally, the relaxation of the stress of the heat insulating foam material stabilizes the adhesion of the butyl rubber to the adherend and prevents the heat insulating material from being kept in contact with water. There is no water infiltration into the hole made by punching with a needle or screw, and the self-adhesiveness unique to butyl has good adhesion to oily steel plate and uneven or dirty wood or concrete. In order to demonstrate, the use expanded. At the construction site, since the release paper is not trashed, the natural environment can be protected.

[0013]

As described above, according to the present invention, it is possible to obtain not only dust from the release paper but also a heat insulating and waterproofing material having greatly improved adhesion and waterproofness.

[Brief description of the drawings]

FIG. 1 is a perspective view of the heat insulating and waterproofing material of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Skin layer 2 Insulation foam 3 Release surface 4 Rubber adhesive layer 10 Insulation waterproofing material

Claims (5)

[Claims] 1. A heat insulating and waterproofing material characterized in that a release treatment is performed on one surface of a heat insulating foam and a waterproof rubber adhesive layer is provided on the other surface. 2. The heat-insulating and waterproofing material according to claim 1, wherein the surface of the heat-insulating foam is subjected to a release treatment as a skin layer. 3. The heat insulating and waterproofing material according to claim 2, wherein the waterproof rubber adhesive layer side of the heat insulating foam is also a skin layer. 4. The heat insulating and waterproofing material according to claim 1, wherein the heat insulating foam is a crosslinked polyethylene foam having an expansion ratio of 5 to 50 times. 5. The heat insulating and waterproofing material according to claim 1, wherein the waterproof rubber adhesive layer is an uncrosslinked butyl rubber.