Heat-sealable polypropylene blends and methods for their prepara

Details Heat-sealable polypropylene blends and methods for their prepara Heat-sealable polypropylene blends and methods for their prepara

1980-07-14

1983-07-19

Bleutge, John C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

2041592, 264 22, 524232, 524489, 524553, 524554, 524578, 525210, 525232, 525240, C08L 2312, B29D 724, C08J 718, C08F21208

Patent

active

043942350

ABSTRACT:
This invention relates to blends of polypropylene and styrene-terpene copolymers which provide biaxially oriented, corona discharge treated, heat-sealable films useful in the packaging art.
Preferably the compositions also contain a saturated fatty amide, e.g., stearamide slip agent and/or a Fischer-Tropsch wax.
A process is described when the films after biaxial orientation, are treated by a corona discharge and in some cases heat aged prior to use in the packaging art.

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