Title:
INTERMEDIATE GLASS PLATE MANUFACTURING METHOD, GLASS PLATE MANUFACTURING METHOD, AND INTERMEDIATE GLASS PLATE
Document Type and Number:
WIPO Patent Application WO/2019/189594
Kind Code:
A1
Abstract:
In the present invention, when manufacturing an intermediate glass plate from a glass raw plate, the principal surfaces on both sides of the glass raw plate are heated while the glass raw plate is supported using a jig so that the glass raw plate does not contact a heating source. While the glass raw plate which has been heated is being supported using the jig, the principal surfaces on both sides of the glass raw plate which has been heated are pressurized by being brought into contact simultaneously with a pair of dies so as to mold the intermediate glass plate. Each of the principal surfaces on both sides of the intermediate glass plate includes a peripheral region and a center region which is provided so as to be surrounded by the peripheral region. The plate thickness in the center regions is thinner than the plate thickness in the peripheral regions. The center regions are provided so as to oppose each other.
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Inventors:
TAMAKI MASANORI (JP)
TADA YUTAKA (JP)
HIGUCHI NAOYUKI (JP)
TADA YUTAKA (JP)
HIGUCHI NAOYUKI (JP)
Application Number:
PCT/JP2019/013636
Publication Date:
October 03, 2019
Filing Date:
March 28, 2019
Export Citation:
Assignee:
HOYA CORP (JP)
International Classes:
C03B11/00
Foreign References:
| JP2002104831A | 2002-04-10 | |||
| JPH11228149A | 1999-08-24 | |||
| JP2009221089A | 2009-10-01 | |||
| JP2004059355A | 2004-02-26 | |||
| JPH1192159A | 1999-04-06 | |||
| KR20090102181A | 2009-09-30 |
Attorney, Agent or Firm:
GLOBAL IP TOKYO (JP)
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