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1. (WO2018199402) CURVED GLASS MANUFACTURING METHOD

Pub. No.:    WO/2018/199402    International Application No.:    PCT/KR2017/009778
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Thu Sep 07 01:59:59 CEST 2017
IPC: C03B 23/03
C03B 23/00
C03B 25/02
Applicants: LG ELECTRONICS INC.
엘지전자 주식회사
Inventors: YOO, Hanjong
유한종
LEE, Jinsoo
이진수
JEONG, Donghwan
정동환
HA, Subin
하수빈
HWANG, Minkyu
황민규
Title: CURVED GLASS MANUFACTURING METHOD
Abstract:
The present invention relates to a curved glass manufacturing method. The present invention provides a curved glass manufacturing method comprising: a first step of successively stacking a lower mold, flat glass, and an upper mold, thereby forming a mold assembly; a second step of moving the mold assembly to a first chamber and then heating the same; a third step of moving the mold assembly from the first chamber to a second chamber and then pressurizing the upper mold so as to move the upper mold downward, thereby molding the flat glass in a curved shape; a fourth step of moving the mold assembly from the second chamber to a third chamber and then slowly cooling the molded glass; and a fifth step of moving the mold assembly from the third chamber to a fourth chamber and then cooling the molded glass. The curved glass manufacturing method is characterized in that an elastic member is arranged between the lower mold and the upper mold so as to move the upper mold away from the flat glass, and the elastic member is compressed when the upper mold is pressurized.