EP 0436133 A1 19910710 - The use of neutral paper as a package material for a photosensitive material.
Title (en)
The use of neutral paper as a package material for a photosensitive material.
Title (de)
Die Verwendung von neutralem Papier als Verpackungsmaterial für fotosensibles Material.
Title (fr)
Utilisation de papier neutre comme matériel d'emballage de matériaux photosensibles.
Publication
Application
Priority
JP 31546989 A 19891206
Abstract (en)
A neutral paper comprises 20 to 100 % of partially chemically processed pulp produced in a 65 to 95 % yield using a cooking agent consisting essentially of NaOH, Na2CO3, NaHCO3, Na2SO3, NaHSO3 or a combination thereof and has a pH of 6 to 9. A paper tube made of the above paper joined by emulsion adhesive or water-soluble adhesive of pH 6 to 9 is also provided.
IPC 1-7
IPC 8 full level
G03C 1/775 (2006.01); B65H 75/10 (2006.01); D21B 1/14 (2006.01); D21C 3/02 (2006.01); D21C 3/04 (2006.01); D21C 3/12 (2006.01); D21H 11/00 (2006.01); D21H 11/06 (2006.01)
CPC (source: EP)
D21C 3/02 (2013.01); D21C 3/12 (2013.01); D21H 11/06 (2013.01)
Citation (search report)
- [X] "PULP AND PAPER. Chemistry and Chemical Technology. 3rd Edition, Volume 1." 1980, JAMES P. CASEY, NEW YORK
- [Y] DATABASE WPIL, no. 88-268823 Derwent Publications Ltd., London, GB, & JP-A-63197945 (KONISHIROKU PHOTO KK)
Designated contracting state (EPC)
DE NL
DOCDB simple family (publication)
EP 0436133 A1 19910710; EP 0436133 B1 19940810; DE 69011491 D1 19940915; DE 69011491 T2 19941208; JP H03180583 A 19910806
DOCDB simple family (application)
EP 90123231 A 19901204; DE 69011491 T 19901204; JP 31546989 A 19891206