Method and apparatus for manufacture of free-flowing dunnage of molded pulp
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United States of America Patent
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Jul 12, 1994
Issued Date -
N/A
app pub date -
Nov 20, 1992
filing date -
Nov 29, 1991
priority date (Note) -
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Abstract
Free-flowing dunnage of molded pulp pieces (10), having random non-nestable shapes to insure the free-flowing characteristic, is made by a method and apparatus involving partially drying pulp fibers on a forming-die screen (38) to form intermediate dish-shaped pieces, form-free removal of such pieces from the screen, and thereafter drying them free of form support to obtain random shapes. One preferred embodiment involves blowing intermediate pieces from the screen onto a conveyor (50) for subsequent drying, such blowing and landing altering the intermediate piece shapes to enhance randomness in the shapes of the dunnage pieces, and another involves using heated air for partial drying.
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