Method of forming sieve unit for screening machine
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United States of America Patent
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Aug 29, 1989
Issued Date -
N/A
app pub date -
Sep 11, 1987
filing date -
May 3, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A screen unit for a screening machine comprises a screen layer which is bonded to a screen frame spanning an opening thereof. The screen layer is uniformly heated before such bonding is effected so that cooling after bonding generates a tension in the screen layer to allow it to have a trampoline or drumhead vibratile action. The tension is maintained by a reinforcing frame embedded in the frame body.
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