EP 0229562 B1 19901031 - DOUBLE-LAYERED PAPER PRODUCT FOR PRINTING AND PROCESS FOR ITS MANUFACTURE
Title (en)
DOUBLE-LAYERED PAPER PRODUCT FOR PRINTING AND PROCESS FOR ITS MANUFACTURE
Publication
Application
Priority
FR 8519038 A 19851223
Abstract (en)
1. Papermaking product comprising two layers based upon cellulosic fibres, a support layer and a covering layer : - the support layer comprises unbleached and/or bleached, recycled or not recycled cellulosic fibres, - the covering layer comprises mineral fillers which impart to it a white pigmentation, in a proportion of from 25 to 50% by weight of dry material in the layer, the remainder being white, long and short cellulosic fibres, with 25% at least by weight of long fibres of a length exceeding 4 mm, - the covering layer has a weight per unit area of from 25 g/m**2 to 70 g/m**2 , - the support layer has a weight per unit area such that the papermaking product has a total weight per unit area of from 120 g/m**2 to 300 g/m**2 , - the covering layer has a degree of whiteness, determined in accordance with the standard NFQ 03.039, of at least 70, - the covering layer has a suitability for flexographic printing determined by measuring optical density by means of a MACBETH RD 914 densitometer on a product printed in blue with a strong screening greater than 0.5.
IPC 1-7
IPC 8 full level
D21F 11/04 (2006.01); D21H 27/30 (2006.01)
CPC (source: EP US)
D21F 11/04 (2013.01 - EP US); Y10T 428/25 (2015.01 - EP US); Y10T 428/277 (2015.01 - EP US); Y10T 428/31982 (2015.04 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
US 5039378 A 19910813; AT E57966 T1 19901115; DE 3675366 D1 19901206; EP 0229562 A1 19870722; EP 0229562 B1 19901031; ES 2019296 B3 19910616; FR 2592070 A1 19870626; FR 2592070 B1 19880812; PT 84003 A 19870101; PT 84003 B 19890117
DOCDB simple family (application)
US 3907687 A 19870416; AT 86402800 T 19861215; DE 3675366 T 19861215; EP 86402800 A 19861215; ES 86402800 T 19861215; FR 8519038 A 19851223; PT 8400386 A 19861222