Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With formation of web or article
Patent
1974-12-30
1977-03-15
Lindsay, Jr., Robert L.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With formation of web or article
162 18, 162 23, 162 47, 162 68, 162190, 162225, 241 28, D21C 324, D21F 1100
Patent
active
040122794
ABSTRACT:
Lignocellulose fiber containing chips, preheated with steam liberated from a previous chip defibration, are dewatered and then defibrated in an atmosphere of saturated steam and in the presence of backwater and suspended in backwater to form a pulp suspension whereafter wet sheets are formed from the pulp suspension, water is mechanically removed from the wet sheets and recycled as backwater to be supplied simultaneously, with dewatered chips, to the defibration step and to form a new pulp suspension and said wet sheets are dried.
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patent: 1670874 (1928-05-01), Bankus et al.
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patent: 2008892 (1935-07-01), Asplund
patent: 2610119 (1952-09-01), Magnuson
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patent: 3821073 (1974-06-01), Eriksson
patent: 3907630 (1975-09-01), Selander
Technical Association Papers, Series VI, June 1923, pp. 91-93, Brown.
Cederquist Karl
Selander Stig
Corbin Arthur L.
Lindsay, Jr. Robert L.
Munson Eric Y.
Selander Stig
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