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Application filed by Yhtyneet Paperitehtaat OyfiledCriticalYhtyneet Paperitehtaat Oy
Priority to FI871167ApriorityCriticalpatent/FI81643C/en
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Publication of FI871167ApublicationCriticalpatent/FI871167A/en
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Publication of FI81643BpublicationCriticalpatent/FI81643B/en
Publication of FI81643CpublicationCriticalpatent/FI81643C/en
Porous sack paper is produced from HC-beaten pulp. The porosity of the paper is at most 8 s expressed as Gurley number. Its rupture modulus in the machine direction is at least 1.8 kJ/kg and in the cross direction at least 1.8 kJ/kg. In the method the fines are separated from the chips used to produce the pulp, the pulp is HC-beaten and the pulp and chemicals that increase porosity are optionally added to the pulp.
FI871167A1987-03-181987-03-18
POROEST SAECKPAPPER OCH FOERFARANDE FOER TILLVERKNING AV DETSAMMA.
FI81643C
(en)
PROCEDURE FOR THE ASSORTMENT OF FIBROUS MATERIAL, PARTICULARLY FOR THE MANUFACTURE OF PAPER, AS WELL AS ASSORTMENT DEVICE FOR THE IMPLEMENTATION OF THE PROCEDURE.
PROCESS FOR THE PRODUCTION OF CHEMICAL CELLULOSE AND/OR PAPER PULP, AS WELL AS THE PLANT AND RELATED COMPONENTS FOR THE IMPLEMENTATION OF THE INDICATED PROCESS