Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Reexamination Certificate
2004-05-21
2011-11-08
Sole, Joseph Del (Department: 1743)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
C264S319000, C264S327000, C156S244260, C156S244270
Reexamination Certificate
active
08052913
ABSTRACT:
Process for the production of a polymeric article by: (a) forming a ply having successive layers, namely (i) a first layer made up of strands of an oriented polymeric material; (ii) a second layer of a polymeric material; (iii) a third layer made up of strands of an oriented polymeric material, wherein the second layer has a lower peak melting temperature than that of the first and third layers; (b) subjecting the ply to conditions of time, temperature and pressure sufficient to melt a proportion of the first layer, to melt the second layer entirely, and to melt a proportion of the third layer; and to compact the ply; and (c) cooling the compacted ply. The resultant articles have good mechanical properties yet may be made at lower compaction temperatures than articles not employing the second layer, leading to a more controllable manufacturing process.
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Hine Peter John
Norris Keith
Ward Ian MacMillan
Del Sole Joseph
Husch Blackwell
Malekzadeh Seyed Masoud
Propex Operating Company LLC
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