Low density material containing a vegetable filler

Details Low density material containing a vegetable filler Low density material containing a vegetable filler

1992-04-08

1993-07-13

Jones, W. Gary

Paper making and fiber liberation

Processes and products

Plural fiber containing

162147, 162148, 162149, 162150, D21H 1701

Patent

active

052270246

ABSTRACT:
A process for reducing the density, increasing the bulk, the hand and the porosity of a sheet material containing fibers by use of a vegetable filler, wherein a pulverulant vegetable filler of density less than 500 kg/m.sup.3 is introduced into the fibrous mass during the manufacture of the material. At least 95% by weight of the particles of the vegetable filler are less than 150 micrometers in size and at least 80% by weight of the particles of vegetable filler are greater than 10 micrometers in size. The process is particularly useful for obtaining paper and cardboard of low density with improved hand (or bulk) and porosity. It is also attractive since it reduces the cost prices and enhances the thermal and acoustic insulation properties.

REFERENCES:
patent: 4011130 (1977-03-01), Woeden

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