Accession Number:

ADD020273

Title:

Controlled Skin Formation for Foamed Extrudate

Descriptive Note:

Patent application, filed 26 Oct 2006

Corporate Author:

NAVAL UNDERSEA WARFARE CENTER DIV NEWPORT RI

Personal Author(s):

Report Date:

2006-11-09

Pagination or Media Count:

11.0

Abstract:

The present invention is directed to the extrusion of plastics, and more specifically to a method for achieving a very smooth extrudate surface using thermoplastic syntactic foam materials. It is a general purpose and object of the present invention to disclose a method and apparatus to control the skin formation of a foamed extrudate. It is a further object to employ an insulating plate to shield and control cooling of the die used to extrude the foam such that a low density extrudate with a solid skin and inner foamed core is achieved.

Subject Categories:

  • Plastics
  • Machinery and Tools

Distribution Statement:

APPROVED FOR PUBLIC RELEASE