Title:
OUTDOOR PVC WALLBOARD FOR PREVENTING YELLOWING
Document Type and Number:
WIPO Patent Application WO/2022/227258
Kind Code:
A1
Abstract:
An outdoor PVC wallboard for preventing yellowing, comprising a heat resistance and acid removal mechanism (3). The heat resistance and acid removal mechanism (3) comprises a mounting groove (31), the interior of the mounting groove (31) is rotatably connected to a housing I (32), the outer side of the housing I (32) is snap-fit to a cam (33), and the outer side of the mounting groove (31) is fixedly connected to a permeable shell (34). According to the outdoor PVC wallboard for preventing yellowing, a screw (24) is threadedly connected to a corresponding threaded hole for automatic fixing, the installation process is simplified, a clamping block (25) and a T-shaped groove do not move and can be automatically fixed, and the part is prevented from loosening due to thermal expansion and contraction caused by the temperature difference, such that potential safety hazards are avoided, and calcium chloride after reaction is prevented from being attached to the surface of a PVC board, moisture in the PVC wallboard can be effectively absorbed, and the reaction between the acidic substance in the natural environment and the polymer in the PVC wallboard is reduced, and the service life is prolonged.
Inventors:
XU HUILIANG (CN)
Application Number:
PCT/CN2021/102800
Publication Date:
November 03, 2022
Filing Date:
June 28, 2021
Export Citation:
Assignee:
HAINING OUPAI IND AND TRADE CO LTD (CN)
International Classes:
E04F13/072; B01D53/68; B01D53/82; E04F13/074; E04F13/075
Foreign References:
| CN211421448U | 2020-09-04 | |||
| CN112360091A | 2021-02-12 | |||
| CN110952753A | 2020-04-03 | |||
| CN209837556U | 2019-12-24 | |||
| CN111827607A | 2020-10-27 | |||
| CN112647660A | 2021-04-13 | |||
| CN212478360U | 2021-02-05 | |||
| JPH05141016A | 1993-06-08 | |||
| EP3199720A1 | 2017-08-02 |
Attorney, Agent or Firm:
ZHEJIANG BAILI INTELLECTUAL PROPERTY AGENCY CO. LTD (CN)
Download PDF: