Process for manufacture of high bulk paper
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United States of America Patent
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Aug 7, 1984
Grant Date -
N/A
app pub date -
Jun 30, 1982
filing date -
Jun 30, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process and apparatus for the manufacture of high bulk paper, or a high bulk layer of a multi-layered paper, which uses a mixture of fully hydrated paper making fibres and substantially unhydrated fibres. The unhydrated fibres may be mixed with the conventional slurry of hydrated fibres shortly before the head box. The web may be dried primarily by pressing, with the unhydrated fibres remaining relatively unhydrated throughout the process and ensuring a bulky product; through-driers need not be used. The invention also covers the novel product of this process.
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