Labelling of substrates
AssigneeAvery Dennison Corporation
InventorMelvin S. Freedman
Life of this patent
Estimating the term…
Abstract
Extruded heat-set polymeric films are die-cut into labels, dispensed past peel-back edges, and applied to deformable or rigid substrates after being treated differently in their lengthwise and cross-directions so as to have different stiffnesses in the respective directions and achieve a tradeoff between dispensability and conformability superior to that of prior art labels of heat-set polymeric material.
Claims19
A method for conformably labelling workpieces that present substrates to which die-cut heat-set polymeric-film labels having a thickness of less than about 3 mils are applied by a labelling machine comprising the steps of extruding in film form a charge of polymeric material for label stock, directionally-stiffening and heat-setting said extruded film including selecting a differentiation between stiffness in the machine direction and stiffness in the cross-direction such that the degree of stiffening in the machine direction exceeds the degree of stiffening in the cross-direction and the degree of stiffening in the machine direction stiffens the heat set-film to a stiffness of between about 10 and about 60 Gurley in the machine direction, combining said differentially-stiffened heat-set film with an adhesive layer and a carrier, said carrier including a release surface means having release values in the range of from about 10 to about 80 grams/2 inch width measured at a peel rate of 400 inches/minute, die-cutting said film into a series of individual heat-set polymeric-film labels carried on said carrier, and dispensing said heat-set polymeric-film labels past a peel-back edge and onto workpieces that present substrates on which the labels are applied.
A method for conformably labelling workpieces that present substrates to which die-cut heat-set polymeric-film labels having a thickness of less than about 3 mils are applied at high speeds by a labelling machine comprising the steps of providing a film of polymeric material for label stock, said film being differentially hot-stretched and heat set such that the degree of hot-stretching in the machine direction substantially exceeds the degree of hot-stretching in the cross-direction, combining said hot-stretched and heat-set film with an adhesive layer and a carrier, said carrier including a polymeric release surface means having an average release value of about 45 grams/2 inch width as measured at a peel rate of 400 inches per minute, die-cutting said film into a series of individual heat-set polymeric-film labels carried on said carrier, and dispensing said heat-set polymeric-film labels past a peel-back edge and onto workpieces that present substrates on which the labels are applied.
A method for conformably labelling workpieces that present substrates to which die-cut heat-set polymeric-film labels having a thickness of less than about 3 mils are applied by a labelling machine comprising the steps of extruding in film form a charge of polymeric material for label stock, directionally-stiffening and heat-setting said extruded film including selecting a differentiation between stiffness in the machine direction and stiffness in the cross-direction such that the degree of stiffening in the machine direction exceeds the degree of stiffening in the cross-direction and the degree of stiffening in the machine direction stiffens the heat set-film to a stiffness of between about 10 and about 20 Gurley in the machine direction, combining said differentially-stiffened heat-set film with an adhesive layer and a carrier, said carrier including a release surface means, die-cutting said film into a series of individual heat-set polymeric-film labels carried on said carrier, and dispensing said heat-set polymeric-film labels past a peel-back edge and onto workpieces that present substrates on which the labels are applied at a rate greater than about 200 workpieces per minute.
Dependencies are inferred from the claim text.