Title:
PRE-APPLIED WATERPROOFING SHEET
Document Type and Number:
WIPO Patent Application WO/2023/237118
Kind Code:
A1
Abstract:
Disclosed in the present application is a pre-applied waterproofing sheet, comprising an anti-sticking film, a self-adhesive layer and a body waterproof material layer, which are sequentially stacked. The anti-sticking film is provided with a plurality of holes, which are open in a surface of the anti-sticking film, wherein at least some of the holes are through holes penetrating the anti-sticking film along the thickness thereof; and on the basis of the total number of holes, the proportion of the number of through holes is 50-100%. The through holes meet a first preset condition, which comprises: heating the pre-applied waterproofing sheet to 70°C; placing a test plate of 25*8 cm onto the surface of the pre-applied waterproofing sheet close to the anti-sticking film, so that the test plate covers the openings of the through holes; and when a positive pressure of 750 N is exerted on the pre-applied waterproofing sheet by means of the test plate, a self-adhesive not reaching the test plate.
Inventors:
CHEN ZHIWEI (CN)
YANG XIAOYU (CN)
GONG XINGYU (CN)
YANG XIAOYU (CN)
GONG XINGYU (CN)
Application Number:
PCT/CN2023/099555
Publication Date:
December 14, 2023
Filing Date:
June 09, 2023
Export Citation:
Assignee:
KESHUN WATERPROOF TECH CO LTD (CN)
International Classes:
E04B1/66; C09J7/29; E04B1/92
Foreign References:
| CN115233839A | 2022-10-25 | |||
| JP2010001617A | 2010-01-07 | |||
| CN210679906U | 2020-06-05 | |||
| CN214646561U | 2021-11-09 | |||
| JPH0372150A | 1991-03-27 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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