METHOD AND DEVICE FOR SEALING TUBULAR PLASTIC PACKAGING, AND RESULTING PACKAGING
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United States of America Patent
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Issued Date -
Aug 2, 2012
app pub date -
Jul 31, 2009
filing date -
Jul 31, 2009
priority date (Note) -
Abandoned
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Abstract
Method for welding a tubular plastic container, comprising at least the following operations:
- a. a winding operation in which a laminate (11) is wound,b. a positioning operation in which the ends (8, 9) of the laminate (11) are positioned next to one another,c. an extrusion operation in which a softened resin string (12) is extruded and deposited on the said ends (8, 9),d. a fusion operation in which the said ends (8, 9) are fused by means of the said string (12),e. a compression operation in which the weld zone (10) is compressed,f. a cooling operation in which the weld is cooled.
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