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Patent Searching and Data


Title:
FILM FOR VACUUM FORMING
Document Type and Number:
Japanese Patent JPH0853556
Kind Code:
A
Abstract:

PURPOSE: To obtain the subject film hardly inducing draw-down, easily formable to a film and suitable for a vacuum forming of a food container, etc., by using an ultra-high molecular weight polycarbonate resin having an especially high molecular weight.

CONSTITUTION: This film having a thickness of 0.1-1mm is obtained by an extrusion molding of a polycarbonate resin mixture having a melt flow value (Q-value) of (5-30)×10-3mL/s measured by a nozzle dimension of 1mm×10mm under a pressure of 160kg/cm2 at 280°C and composed of (A) 90-99wt.% polycarbonate resin having a weight-average molecular weight of 13000-45000 and (B) 1-10wt.% ultra-high molecular weight polycarbonate resin having a weight- average molecular weight of 175000-300000 (e.g. 180000-250000). The component A and the component B are preferably obtained e.g. by reacting a bihydric phenol such as bisphenol-A and a carbonate precursor such as phosgene by a solution method or a melt method.


Inventors:
MIYAUCHI MASAYOSHI
YAMASHITA HIROKI
Application Number:
JP19052094A
Publication Date:
February 27, 1996
Filing Date:
August 12, 1994
Export Citation:
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Assignee:
TEIJIN CHEMICALS LTD
International Classes:
C08J5/18; B29C47/00; C08G64/00; C08G64/04; C08L69/00; B29K69/00; (IPC1-7): C08J5/18; B29C47/00; C08G64/04; C08L69/00
Attorney, Agent or Firm:
Maeda Junhiro