Title:
MATERIAL AND PROCESS FOR MANUFACTURING PLASTIC MEMBER
Document Type and Number:
Japanese Patent JP3373335
Kind Code:
B2
Abstract:
PURPOSE: To solve the problem of flowability and moisture retention in casting into a thin plastic shell by forming microspheres having a specified shape.
CONSTITUTION: There are provided thermoplastic microspheres made from a blend comprising a thermoplastic resin and a pigment, wherein the pigment constitutes below 5 wt.% of the blend and is in the form of oblong spheres, has an outside diameter in the range of 0.007-0.040 inch (0.18-1.0 mm), and has a smooth surface appearance. The thermoplastic resin used is a polyvinyl chloride, a polyurethane, a polypropylene, a polyethylene, a polystyrene, an epoxy resin, or an alloy thereof. The microspheres are obtained by mixing a thermoplastic resin with a pigment, and, optionally, additives, melting the mixture, melt-extruding the melt through an orifice, chopping the extrudate, and cooling the pellets in a water chamber.
Inventors:
Robert A. Glimmer
Application Number:
JP18331995A
Publication Date:
February 04, 2003
Filing Date:
June 28, 1995
Export Citation:
Assignee:
Davidson Textron Incorporated
International Classes:
B01J13/02; B29B7/00; B29B9/06; B29C41/00; B29C41/04; B29C41/18; C08J3/12; C08K7/16; B29K63/00; B29K101/12; B29K105/04; (IPC1-7): B29B9/06; B29C41/04
Other References:
【文献】米国特許4508859(US,A)
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)