Process for preparing a sheet material with improved on-machine

Details Process for preparing a sheet material with improved on-machine Process for preparing a sheet material with improved on-machine

1987-02-20

1990-07-24

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621643, 1621646, 1621681, 1621682, 1621683, 162169, 162174, 162175, 162177, 1621811, 1621812, 1621818, 162183, D21H 302

Patent

active

049433490

ABSTRACT:
Process for using papermaking techniques for preparing a sheet material with improved on-machine retention, sheet material thus obtained and its application, notably in the field of printing and writing, packaging and coverings.
The invention relates to a process for using papermaking techniques to make a sheet material.
This material copmrises, in addition to the fibres, an organic binder, a non-binding mineral filler and a flocculant, as well as various conventional additives, this process being characterized by the fact that the mineral filler and the binder are flocculated beforehand before being incorporated into the fibre suspension.
The material thus prepared has enhanced mineral filler retention and physical properties and can be used as printing and writing medium, covering medium, packaging medium or for obtaining complexes for industrial or foodstuffs use.

REFERENCES:
patent: 4181567 (1980-01-01), Riddell et al.
patent: 4210490 (1980-07-01), Taylor

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