EP 0031832 B1 19850220 - SHEETS PRODUCTS AND PREPARATION PROCESS THEREOF
Title (en)
SHEETS PRODUCTS AND PREPARATION PROCESS THEREOF
Publication
Application
Priority
FR 7917910 A 19790710
Abstract (en)
[origin: WO8100268A1] A new process for preparing, by means of a paper manufacturing technique, a thermoplastic sheet reinforced with cellulose fibers, wherein a thermoplastic powder and cellulose fibers are used in association, if necessary with other fibers said process being characterized in that (1) an aqueous suspension is prepared from a base mixture (selected among (i) the fibers and the pulverulent thermoplastic substance when there is no non-binding mineral charge, and (ii) the fibers, the pulverulent thermoplastic substance and the non-binding mineral charge when the latter is present), an organic binder and a flocculating agent, and by means of the suspension thus obtained, a sheet is formed by wet process, and it is then wrung and dried and (2) if necessary, the thermoplastic sheet thus obtained is subjected to at least a complementary treatment, the weight ratio of pulverulent thermoplastic substance to fibers being comprised between .3 and 95. Thermoplastic reinforced sheet as a new industrial product and application thereof particularly in the field of transformation of plastic materials.
IPC 1-7
IPC 8 full level
B29B 9/04 (2006.01); B29B 11/06 (2006.01); C08J 5/04 (2006.01); D21H 13/16 (2006.01); D21H 13/40 (2006.01); D21H 17/33 (2006.01); D21H 17/34 (2006.01)
CPC (source: EP US)
D21H 13/16 (2013.01 - EP US); D21H 13/40 (2013.01 - EP US); D21H 17/34 (2013.01 - EP US); Y10T 442/697 (2015.04 - EP US); Y10T 442/699 (2015.04 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB LI LU NL SE
DOCDB simple family (publication)
WO 8100268 A1 19810205; AT E11939 T1 19850315; BE 884712 A 19810211; CA 1163059 A 19840306; DE 3070207 D1 19850328; DK 108781 A 19810310; DK 156588 B 19890911; DK 156588 C 19900205; EP 0031832 A1 19810715; EP 0031832 B1 19850220; FR 2461061 A1 19810130; JP H0227479 B2 19900618; JP S56500853 A 19810625; US 4481075 A 19841106
DOCDB simple family (application)
FR 8000115 W 19800708; AT 80901273 T 19800708; BE 884712D A ; CA 355827 A 19800709; DE 3070207 T 19800708; DK 108781 A 19810310; EP 80901273 A 19810209; FR 7917910 A 19790710; JP 50154480 A 19800708; US 45938083 A 19830110