Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Reexamination Certificate
2005-06-22
2009-11-24
Lee, Edmund H. (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
C264S279100, C264S328170
Reexamination Certificate
active
07622065
ABSTRACT:
Mold12has an upper mold half14and a lower mold half16. Pellet34obtained by cutting a resin composition into a predetermined size is placed into the mold12. One pellet34is put on one recessed part24. The pellet34has an incipient fluidization temperature T of 50° C. or greater and 150° C. or less. Weight of the pellet34is 1.4 g or greater and 2.0 g or less. Through clamping, the pellet34is compressed, and heated to allow the resin composition to flow thereby forming a preforming material. Difference (Tp−T) between the molding temperature Tp and the incipient fluidization temperature T is equal to or less than 70° C. Percent Pp of change in the weight average molecular weight Mp of the preforming material to the weight average molecular weight M of the pellet34is equal to or greater than −30%. Cover is formed with this preforming material. Percent Pc of change in the weight average molecular weight Mc of the cover to the weight average molecular weight M of the pellet34is equal to or greater than −30%.
REFERENCES:
patent: 5824258 (1998-10-01), Yamaguchi
patent: 2004-209071 (2004-07-01), None
Fujisawa Koichi
Isogawa Kazuhiko
Birch & Stewart Kolasch & Birch, LLP
Lee Edmund H.
SRI Sports Limited
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