EP 0285734 B1 19921202 - PROCESS FOR IMPREGNATING HYDROPHILIC PAPER SHEETS WHICH CAN SWELL
Title (en)
PROCESS FOR IMPREGNATING HYDROPHILIC PAPER SHEETS WHICH CAN SWELL
Publication
Application
Priority
DE 3711807 A 19870408
Abstract (en)
[origin: EP0285734A2] A process for the impregnation of flat fibrous materials such as, for example, cellulose paper webs or the like, to produce laminating materials with high surface strength for the coating of sheetlike base materials of all kinds. The impregnating agents used are preferably condensable or polymerisable synthetic resins are used as the impregnating agents incorporated into the fibrous material and, after curing, the impregnated material is stored, for instance in reel form, and/or despatched for use as an intermediate product for subsequent permanent bonding with the surface of the flat-shaped base material. The impregnating agent in the form of a highly concentrated solution of resin with a solids content of at least approximately 70% is continuously and homogeneously applied to the fibrous material webs at room temperature at a viscosity from 200 to 2,000 mPa.s. This is followed by heat treatment at up to 100 DEG C over a period which is relatively short compared with the curing period for the resin compound. <IMAGE>
IPC 1-7
IPC 8 full level
D06N 7/06 (2006.01); D21H 17/33 (2006.01); D21H 23/78 (2006.01); D21H 25/08 (2006.01); D21H 27/22 (2006.01); D21H 11/00 (2006.01); D21H 17/51 (2006.01)
CPC (source: EP)
D21H 27/22 (2013.01); D21H 17/51 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0285734 A2 19881012; EP 0285734 A3 19890201; EP 0285734 B1 19921202; AT E83018 T1 19921215; DE 3711807 A1 19881027; DE 3782934 D1 19930114; ES 2036596 T3 19930601
DOCDB simple family (application)
EP 87710008 A 19870624; AT 87710008 T 19870624; DE 3711807 A 19870408; DE 3782934 T 19870624; ES 87710008 T 19870624