Processing aids for enhanced machine direction orientation...

Details Processing aids for enhanced machine direction orientation... Processing aids for enhanced machine direction orientation...

2005-05-03

2005-05-03

Rabago, Roberto (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S478000, C524S479000, C524S480000, C524S488000, C524S489000, C524S487000, C524S587000, C525S240000, C526S348100, C428S910000, C264S288400, C264S435000, C264S479000

Reexamination Certificate

active

06887923

ABSTRACT:
The present invention disclose a method for the orientation of a high density polyethylene (“HDPE”) film. The process of the invention comprises forming a HDPE-wax mixture by adding to a HDPE batch a normally solid hydrocarbon wax. The HDPE-wax mixture is subsequently stretched into a film at an orientation temperature below the film's melt temperature. The hydrocarbon wax is characterized by having a drop point equal to or lower than the melting point of the HDPE film. The present invention also provides a film made by the process of the invention and a master batch thereof.

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