Manufacturing of kraft paper

Details Manufacturing of kraft paper Manufacturing of kraft paper

1986-02-21

1988-05-03

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-uniform, irregular or configured web or sheet

162112, 162113, 162123, 162132, 162133, 162204, 162207, D21H 524

Patent

active

047413760

ABSTRACT:
A process for manufacturing of kraft paper, especially kraft sack paper, on a multi-wire machine in which the web is dried by a combined cylinder drying and free drying and is optionally creped or micro-creped and optionally also glazed. By forming the web into two or more layers which are couched together in the wire part of the machine and subsequent shrinkage in order to obtain a stretch at break of at least 2.5% in the machine direction and of at least 5% in the tranverse direction, improved strength properties are provided.

REFERENCES:
patent: 1107807 (1914-08-01), Loebbecke
patent: 3362869 (1968-01-01), Welsh
patent: 3515633 (1970-06-01), Futch
patent: 3523865 (1970-08-01), Ihrman
Casey, Pulp and Paper, vol. II, (1980), vol. III, (1983) pp. 1044-1052, 2360,2361.

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