The Dow Chemical Company

Lloyd E Lefevre

Mark A Wegenka

Fred Stevenson

A vinylidene chloride copolymer composition manufactured by the addition of a grease copolymer, such as low molecular weight ethylene-vinyl-acetate copolymer, in place of or in combination with conventional plasticizer blend additions.

Extrusion-grade vinylidene chloride copolymer compositions and films

A method of affecting the tail end of a roll of plastic film to render it readily identifiable and easy to grasp and start without tearing the film web into strips. The tail end of the film is embossed on-line as it is separated and about to be wound up on a roll core. The method is accomplished by securing the tail end between a heated surface on the upstream side of a knife on a cut-off roll and a lifting and embossment mechanism to provide a wide embossment across the tail end of the film at about the time it is severed from the film stock. The method produces a novel puckered tail, particularly for highly oriented films where tension is relieved while the tail end is still heated.

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Bay City, MI, United States of America

Lloyd E Lefevre