Manufacture of highly compressed paper containing synthetic fibe

Details Manufacture of highly compressed paper containing synthetic fibe Manufacture of highly compressed paper containing synthetic fibe

1990-06-13

1992-04-07

Chin, Peter

Paper making and fiber liberation

Processes and products

With coating after drying

162136, 162146, 1621681, 162177, 162206, D21H 2506

Patent

active

051025027

ABSTRACT:
A process for the manufacture of highly compressed paper containing synthetic fibers with a volume weight of equal to or greater than 0.9 kg/dm.sup.3 whereby the paper sheet which comprises a mixture of cellulose and thermoplastic synthetic fibers in the ratio of 50:50 to 90:10 with a degree of grinding of 35 to 75 SR, is treated with sizing, retention and wetting agents and, if applicable, filler materials and is sized on the surface. Subsequently during a separate operational stage the sheet is subjected to a glaze finishing at surface temperatures of the calender rollers of equal to or greater than 100.degree. C. and linear roller pressures equal to or greater than 30 Kn/m.

REFERENCES:
patent: 3415671 (1968-12-01), Rice
patent: 4015043 (1977-03-01), Watanabe et al.
patent: 4216055 (1980-08-01), Watanabe et al.
patent: 4257843 (1981-03-01), Watanabe et al.
patent: 4308542 (1981-12-01), Maekawa et al.
patent: 4496427 (1985-01-01), Davison
patent: 4927495 (1990-05-01), Tamagawa
Paper and Board Manufacture, ABIPC vol. 45 (Feb. 1975), Abstract No. 8130, I. I. Mazanova et al., "Manufacture of Cable Paper With the Use of Synthetic Fibers".

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