Fastener for plastic film sheeting and the like

Details Fastener for plastic film sheeting and the like Fastener for plastic film sheeting and the like

1975-07-07

1976-09-28

Schroeder, Werner H.

Buckles, buttons, clasps, etc.

Bale and package ties, hose clamps

With tighteners

A44B 2100

Patent

active

039823067

ABSTRACT:
An extruded plastic channel receives the plastic film and a plastic locking strip is then engaged within the channel and under opposed overhanging beads on each side of the channel to clamp the film in position. One of the beads on the channel extends downwardly towards the base of the channel and an expansion bead or member extends upwardly from the base of the channel outboard of the outwardly extending bead which can flex sideways under pressure to compensate for different thicknesses of film. One embodiment includes a membrane connection between the downwardly extending bead and the expansion bead so that when the locking strip is snap engaged into the channel, the sideways displacement of the downwardly extending bead also moves the expansion bead outwardly to facilitate the engagement of the locking strip within the channel.

REFERENCES:
patent: 3792510 (1974-02-01), Evett
patent: 3805873 (1974-04-01), Bloomfield

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