Minigrip LLC

Andre M Herz

Extruded flexible fasteners are secured to thin plastic film by adhesive, attaining high speed production and permitting diverse materials which might not be compatible for fusion bonding to be used in the fasteners and the films, respectively.

Method of joining flexible fastener strips to flexible web

Apparatus for securing extruded flexible fasteners to thin plastic film by adhesive, attaining high speed production and permitting diverse materials which might not be compatible for fusion bonding to be used in the fasteners and the films, respectively.

Means for joining flexible fastener strips to film

A method for making tubular plastic material having shaped interlocking profiles thereon for use in reclosable bags by cross-cutting and sealing the material to form the individual bags. The tubular material is made in different diameters of tubes to form bags of different depths, and the speed of delivery of the plastic material and the rate of inflation and delfation is controlled to determine the diameter of the tubing, while the plastic delivery to the profile portion of the die is separately controlled and maintained at a rate, so that, for different sizes and gauges of tubing, the profile will be maintained constant thereby obtaining a profile of optimum size and providing for bags which can be varied in size, but which can each accommodate the same closing and opening slider which fits over the profiles. This method of extruding profile tubes requires fewer changes in extrusion dies.

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Nesles-la-Vallee, France

Andre M Herz