Minigrip LLC

Inteplast Group Corporation

Roy Kosub

Jacob Arriaga

Garth Bielke

Alan Mosley

Richard Lee Bell

Victor H Ramirez

Jon Wagner

Armando Barajas Guerrero

David Lee Hall

James E Cheatham

A system and method for extruding film with a thickened profile section. In some embodiments, the film forms bags with integral zipper profiles. Plastic film is extruded to form a tube. During extrusion, cooling jets direct cooling gases toward the thickened profile section below the frost line to preferentially cool the thickened profile sections. In some embodiments, warm air is drawn out of the tube interior through hot air intakes located below the frost line. In certain embodiments, the film is extruded at a higher rate of speed than conventional processes. Likewise, the extruded film tube is expanded at a lower blow up ratio than conventional processes in certain preferred embodiments. In some embodiments, the extrusion system includes an air flow surface oriented relative to the film tube to define an air flow gap of substantially uniform thickness.

Blown film with integral profiles

The present disclosure relates a reclosure or zipper for a reclosable package or container, such as a plastic bag, wherein opening or closing the zipper causes an audible sound and a tactile feel. The reclosure or zipper is manufactured by an apparatus which includes a cutting wheel which is opposed to a pressure wheel. The cutting wheel includes cutting teeth spaced about its periphery. Interlocked zipper material is engaged between the cutting wheel and the pressure wheel to form indentations in the interlocked zipper, thereby resulting in audible and tactile feedback when the zipper is operated.

Reclosable package or bag with audible reclosure

Growing community of inventors

Seguin, TX, United States of America

Roy Kosub