Expandable structure constructed from sealed films
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United States of America Patent
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Jan 20, 2015
Issued Date -
N/A
app pub date -
Feb 11, 2013
filing date -
Feb 10, 2012
priority date (Note) -
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Abstract
An expandable structure is manufactured using sheets of thermoplastic material sealed together. The expandable structure has a concertina pattern on its sides that allows the structure to expand and collapse like an accordion. The concertina pattern is cut into the sheets of material rather than being folded into the material to speed up the manufacturing process.
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