Non-stick coated linerless label dispensers

Severing by tearing or breaking – Breaking or tearing apparatus – Web restrainer

Patent

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Details

225 51, B26F 302

Patent

active

056240660

ABSTRACT:
Linerless labels are manually dispensed by mounting a roll of the labels for take-off from a stationary shaft. A polygon-cross-section foam core is provided between the shaft and the label roll to provide a brake drag effect to prevent excess label unwind. The non-adhesive face of the labels passes from the roll around a freely rotating guide roller with a non-stick surface which ensures consistent wrap of the labels and no scuffing of the non-adhesive face as the labels are dispensed. The labels pass from the guide roller to a tear surface having a first smooth, coarse, ribbed or grooved pattern metal portion which has low adhesion to the adhesive of the labels, but will stick to the labels sufficiently to provide an anchoring force to a label greater than the force necessary to tear along a perforation of the label, and a second non-stick surface portion. The tear surface preferably is the exterior surface of a rigid cylinder or tube, and the non-stick surface is provided by a plasma coating on a portion of the rigid cylinder or tube exterior surface, or the non-stick surface may be provided by non-stick varnishes (including silicone epoxy coatings), polypropylene baked enamels, polytetrafluoroethylene coatings, and polytetrafluoroethylene strips.

REFERENCES:
patent: 4402424 (1983-09-01), Mattix
patent: 4570868 (1986-02-01), Wiggs et al.
patent: 4608110 (1986-08-01), Smith
patent: 5375752 (1994-12-01), Michalovic
Wearlon Product Data Sheet, PM 3310-94 Non-Stick Varnish; Aug. 25, 1994.

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