Forming Structure for Internal Snap Ring of Pulp Molded Cup Lid
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United States of America Patent
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Issued Date -
Aug 1, 2024
app pub date -
Mar 23, 2022
filing date -
Mar 23, 2022
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Abstract
A forming structure for the internal snap ring of a pulp molded cup lid is disclosed. When manufacturing the pulp molded cup lid, the pulp suction mold sucks a pulp layer and sends it to a hot press upper mold for clamping and squeezing to shape the pulp layer into a primary blank, meanwhile producing an internal snap ring part on the primary blank. After subsequent hot pressing and shaping, the finished product of a pulp molded cup lid will have an integral internal snap ring structure. Comparing with the prior art, the present invention omits a second operation (processing), and the preparation of a mold for the second operation (processing). Therefore, the present invention can save manufacturing cost and time.
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