EP 0064309 A3 19830824 - A PROCESS FOR THE MANUFACTURING OF PAPER, PARTICULARLY CORRUGATED PAPERBOARD, AND RESULTING PRODUCT
Title (en)
A PROCESS FOR THE MANUFACTURING OF PAPER, PARTICULARLY CORRUGATED PAPERBOARD, AND RESULTING PRODUCT
Publication
Application
Priority
IT 2151281 A 19810505
Abstract (en)
[origin: EP0064309A2] By the treatment of paper, particularly the paper to be used for the intermediate layer of corrugated paper board, with black liquors of paper pulp, an improvement of the physical and mechanical properties of the paper, particularly of the crushing strength, is induced.
IPC 1-7
IPC 8 full level
B32B 3/28 (2006.01); D21H 17/23 (2006.01); D21H 17/36 (2006.01); D21H 19/00 (2006.01); D21H 19/54 (2006.01); D21H 27/40 (2006.01)
CPC (source: EP)
D21H 17/23 (2013.01); D21H 17/36 (2013.01); D21H 27/40 (2013.01)
Citation (search report)
- [X] US 4191610 A 19800304 - PRIOR ERIC S [DE]
- [X] US 3305435 A 19670221 - WILLISTON EDWARD M, et al
- [X] DE 323627 C 19200730 - EWALD RASCH
- [X] CH 450891 A 19680515 - BRECHT WALTER PROF DR ING [DE]
- [A] GB 534534 A 19410310 - RUDOLPH BELLAK, et al
Designated contracting state (EPC)
AT BE CH DE GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0064309 A2 19821110; EP 0064309 A3 19830824; EP 0064309 B1 19870204; AT E25411 T1 19870215; AU 553303 B2 19860710; AU 8340282 A 19821111; CA 1233303 A 19880301; DE 3275394 D1 19870312; ES 511912 A0 19830216; ES 8304246 A1 19830216; FR 2505378 A1 19821112; IL 65788 A0 19820831; IL 65788 A 19860131; IT 1138300 B 19860917; IT 8121512 A0 19810505; JP S5823990 A 19830212; JP S6254920 B2 19871117; ZA 823051 B 19830427
DOCDB simple family (application)
EP 82200472 A 19820420; AT 82200472 T 19820420; AU 8340282 A 19820505; CA 402228 A 19820504; DE 3275394 T 19820420; ES 511912 A 19820504; FR 8124520 A 19811230; IL 6578882 A 19820516; IT 2151281 A 19810505; JP 7592382 A 19820506; ZA 823051 A 19820504