Title:
METHOD FOR MANUFACTURING LAYERED WOOD PANEL
Document Type and Number:
WIPO Patent Application WO/2021/240946
Kind Code:
A1
Abstract:
This method for manufacturing a layered wood panel 1 comprises an uncompressed unit panel preparation step, a pre-compressed unit panel preparation step, and a hot-pressing step. In the uncompressed unit panel preparation step, at least one uncompressed unit panel 2 is prepared, obtained by supplying a unit panel of palm wood with a polyvalent carboxylic acid. In the pre-compressed unit panel preparation step, a plurality of pre-compressed unit panels 3 are prepared, obtained by supplying a polyvalent carboxylic acid to unit panels of palm wood and then heating the panels at a first temperature while pressing the panels at a first pressure,. In the hot-pressing step, the pre-compressed unit panels 3 are overlaid, at least one panel at a time, on both sides of a core 4 that includes the at least one uncompressed unit panel 2, and then the result is heated at a second temperature that is higher than the first temperature while being pressed at a second pressure that is lower than the first pressure.
Inventors:
NAITO SHIGEKI
TAMURA TOSHIKI
TAMURA TOSHIKI
Application Number:
PCT/JP2021/009287
Publication Date:
December 02, 2021
Filing Date:
March 09, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
B27D1/04
Domestic Patent References:
| WO2006130939A2 | 2006-12-14 |
Foreign References:
| JP2014124801A | 2014-07-07 | |||
| JP2014019029A | 2014-02-03 | |||
| JP2014126229A | 2014-07-07 | |||
| EP2944461A1 | 2015-11-18 | |||
| JP2018051837A | 2018-04-05 |
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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