Waterproof structure and manufacturing method thereof
A stainless steel roof drain with controlled surface roughness and additional components ensures strong adhesion to waterproof sheets, addressing adhesion issues and enhancing durability and resistance, forming a robust waterproof structure.
JP7612487B2Active Publication Date: 2025-01-14SEKISUI CHEMICAL CO LTD
Patent Information
- Application Number
- JP2021061548
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-03-31
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2041-03-31
Smart Images
Figure 0007612487000002 
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Abstract
To provide a roof drain that has sufficient adhesion to a waterproof sheet while using stainless steel having superior weatherability and corrosion resistance, and a method of manufacturing a waterproof structure usable for a long period by using the roof drain.SOLUTION: There is provided a roof drain 1 that is mounted in a through hole 2H formed in a rooftop slab 2, and comprises a drain body having: a ring-shaped base plate part 20 where a waterproof sheet 5 arranged continuously from a top surface of the rooftop slab 2 is bonded to its top surface; and a hung part 30 which is molded integrally with the base plate part 20 and has a water passage formed on an inner surface side, wherein the drain body is formed of stainless steel and at least the top surface of the base plate part 20 and an inner surface of the hung part 30 have a surface roughness Ra of 0.5 or more and 6.0 μm or less defined by JIS B 0601 (2013).SELECTED DRAWING: Figure 2
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Citation Information
Patent Citations
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