Lightweight paper and process for producing same

Details Lightweight paper and process for producing same Lightweight paper and process for producing same

1986-10-16

1988-11-08

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621816, 162167, 10628725, 10628734, 106401, D21D 300

Patent

active

047832401

ABSTRACT:
A lightweight paper having a superior opacity and printing opacity is provided, which lightweight paper comprises dry pulp, 0.015 to 1.2% by weight based on the pulp of an alumina polymer and 0.5 to 30% by weight based on the pulp of a coaggregate formed from agglomerated particles of urea-formal-dehyde polymer (A) and agglomerated particles of hydrated silicic acid (B) in a ratio of (A):(B) of 5:95 to 95:5.

REFERENCES:
patent: 3909348 (1975-09-01), Economou et al.
patent: 4132806 (1979-01-01), Wason
patent: 4157920 (1979-06-01), Wason et al.
patent: 4161455 (1979-07-01), Wason
patent: 4183783 (1980-01-01), Suden et al.
patent: 4202813 (1980-05-01), Wason

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