Composite polymeric twist tie

Details Composite polymeric twist tie Composite polymeric twist tie

2006-03-14

2006-03-14

Dixon, Merrick (Department: 1774)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including fastener for attaching to external surface

C428S172000, C428S156000, C428S192000, C428S516000, C383S127000, C493S193000

Reexamination Certificate

active

07011879

ABSTRACT:
A polymeric twist tie20is taught that utilizes a thermoplastic monofilament22having an oriented characteristic produced by stretching a pre-heated monofilament through a heated, volume reducing die. The monofilament22is then coated30circumferentially with an extrusion of thermoplastic enclosing the monofilament while simultaneously forming a pair of opposed wings32integral with the coating. The wings extend outwardly from the coated monofilament allowing the tie to be twisted upon itself with the monofilament retaining its basic configuration and the wings stretching and bending to conform within a coupled twist. The oriented monofilament is fabricated using high density polyethylene and the covering extruded with low density polyethylene which are dissimilar in density, melt index and basic thermoplastic morphology.

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