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Publication of GB135466ApublicationCriticalpatent/GB135466A/en
D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
D21B1/00—Fibrous raw materials or their mechanical treatment
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Engineering & Computer Science
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Mechanical Engineering
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Abstract
135,466. Kron, R. Nov. 19, 1918, [Convention date]. Pulp, preparation of; paper felt.-Fibres suitable for saturating with tar in the production of roofing, lining, and like material, are obtained from wood, or ligneous or strongly siliceous plants, preferably coniferous wood. in the form of logs or other relatively large pieces, by boiling with water or by steaming, and subsequently rolling-out, crushing and grinding, and forming rough absorbent paste-board not weakened by chemical agents.
Blending of hardwood asplund pulp (htmp) with softwood thermomechanical pulp (tmp) in making a low energy tmp furnish of improved strength by ozonation and press drying