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Method and system for manufacturing foamed polyolefin tapes at cost effective line speeds

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Method and system for manufacturing foamed polyolefin tapes at cost effective line speeds


Making foamed polyeolefin tapes include combining a polyolefin resin and a chemical blowing agent to form a mixture. This mixture can then be heated in an extruder to create a supersaturated solution of gas within the polyolefin resin. A cooling device can be positioned adjacent to a die at a set distance for receiving extruded resin and for allowing exposure of the extruded resin to ambient air. This space between the cooling device and die outlet allows bubbles to grow in the extruded resin and to be shaped such that voids or empty spaces can be generated within the extruded polyolefin resin. The voids allow the formation of tapes which use less material but have adequate strength for various applications, such as carpet backings, geotextiles, packaging, housewrap, bags, wire insulation, and reinforcement elements in concrete.

Inventors: Hugh C. Gardner, Josef Uesbeck, Andy Rakovac, Philippe Combier, Kam Lui
USPTO Applicaton #: #20120276358 - Class: 428220 (USPTO) - 11/01/12 - Class 428 
Stock Material Or Miscellaneous Articles > Structurally Defined Web Or Sheet (e.g., Overall Dimension, Etc.) >Physical Dimension Specified

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The Patent Description & Claims data below is from USPTO Patent Application 20120276358, Method and system for manufacturing foamed polyolefin tapes at cost effective line speeds.

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stats Patent Info
Application #
US 20120276358 A1
Publish Date
11/01/2012
Document #
13483472
File Date
05/30/2012
USPTO Class
428220
Other USPTO Classes
264 54, 4253781, 521143
International Class
/
Drawings
11



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