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Title:
METHOD OF COATING FOAMING AGENT OR FOAMING SEALANT IN PIPELINE
Document Type and Number:
WIPO Patent Application WO/2018/023820
Kind Code:
A1
Abstract:
Provided is a method of coating a foaming agent or a foaming sealant in a pipeline, comprising: collecting a foaming sealant (S') and gas by a reduction vessel (12) and passing them through a hose (10) connected to a tap to an end of the pipeline to be coated; after a while, closing valve (13) to deliver only gas and drying and curing the sealant attached to the internal surface of the pipeline (M) by the other particles passing through the center of the pipeline; distributing helically the foaming sealant (S') on the periphery of a mesh or on the external surface of a porous member (6c), and sucking the foaming sealant (S') in and passing it through a slit (6d) by the gas inside the mesh or the axial porous member (6c).

Inventors:
ZHAO, Long (Room 01, Fl28 North of Bai Hui Bldg,No.3019 Sungang East Road, Luohu Dis, Shenzhen Guangdong 0, 518000, CN)
Application Number:
CN2016/094086
Publication Date:
February 08, 2018
Filing Date:
August 09, 2016
Export Citation:
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Assignee:
SHENZHEN CHAO WEIDA TECHNOLOGY CO., LTD (Room 01, Fl28 North of Bai Hui Bldg,No.3019 Sungang East Road, Luohu Dis, Shenzhen Guangdong 0, 518000, CN)
International Classes:
B05D7/22
Domestic Patent References:
2008-07-24
Foreign References:
EP0771987A11997-05-07
US4593722A1986-06-10
JPS62155979A1987-07-10
JPH05318615A1993-12-03
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