Storage bag
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United States of America Patent
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Dec 6, 2022
Grant Date -
May 28, 2020
app pub date -
Jan 30, 2020
filing date -
Jul 31, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A method of making a storage bag comprising the following steps performed in any order: (a) forming a composite tube having an inner surface comprising a higher melting polymer, an outer surface comprising a lower melting polymer, two ends, and a diameter; (b) flattening the tube in a direction perpendicular to the diameter; (c) forming a joint at one of the ends at a temperature between respective melting points of the higher melting polymer and the lower melting polymer; (d) providing a composite sheet having a first side comprising a higher melting polymer and a second side comprising a lower melting polymer; and (e) disposing the composite sheet over the joint such that the first side comprising a lower melting polymer engages the joint and forming a lap seam over the joint at a temperature between respective melting points of the higher melting polymer and the lower melting polymer, and a storage bag made by such method.
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International Classification(s)
- A61J:CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMA....
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- B29B:PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE ....
- B31B:MAKING BOXES, CARTONS, ENVELOPES, OR BAGS
- B65D:CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR....
- B29L:INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RE....
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