Title:
REINFORCED SHEET HAVING CORRUGATED BOARDS ON BOTH SURFACES, APPARATUS AND PROCESS FOR PRODUCING SAME
Document Type and Number:
Japanese Patent JPS5237192
Kind Code:
A
Abstract:
PURPOSE: To produce efficiently a sheet having especially reinforced corrugated surfaces that is further reinforced at desired sections, and has good outlook and good printability, by use of an apparatus which does not call for high installation expenses.
Inventors:
ITOU HIDEJI
YOSHIDA YOUJI
YOSHIDA YOUJI
Application Number:
JP11237775A
Publication Date:
March 22, 1977
Filing Date:
September 17, 1975
Export Citation:
Assignee:
KYOKUTO SHIBOSAN KK
International Classes:
B32B3/28; B31F1/24; B31F1/28; B32B29/08; (IPC1-7): B29D7/00; B31D3/00; B31F1/00
Domestic Patent References:
| JPS509383U | 1975-01-30 | |||
| JPS5011080U | 1975-02-04 |
Foreign References:
| US2885138A | 1959-05-05 | |||
| US3293107A | 1966-12-20 |