Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling rate of movement of molding material or its...
Reexamination Certificate
2011-01-18
2011-01-18
Caputo, Lisa M (Department: 2855)
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling rate of movement of molding material or its...
C264S040100, C073S762000, C073S760000, C073S818000
Reexamination Certificate
active
07871548
ABSTRACT:
A method and means for determining a critical elongation strain rate of a polymer melt, which make it possible to subject a polymer melt to elongation to prepare a bulk oriented melt, are established, and a process for producing bulk polymer oriented crystals and polymer oriented crystals are provided. In the critical elongation strain rate determination process or critical elongation strain rate determining method, a polymer melt (3) in a disc shape having a radius x0and a thickness of Δz0is held between transparent plates (an upper transparent plate (1) and a lower transparent plate (2)). The polymer melt (3) is cooled to a supercooled state and is press in a thickness direction at a constant rate v by using the transparent plates. The critical point radius x*, at which the polymer melt (3) is turned to an oriented crystal, is measured, and the critical elongation strain rate ε is calculated by equation ε*=ax*3wherein α=v/(2Δz0x03).
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Hikosaka Masamichi
Watanabe Kaori
Caputo Lisa M
Dunlap Jonathan
National University of Corporation Hiroshima University
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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