초록 ▼

A flexible multilayer label adapted for application to deformable thermoplastic packages, with such label being impervious to water and sufficiently resilient to avoid permanent deformation upon deflection. The label includes a thermoplastic stress-compensating stratum having a relatively elastic st

A flexible multilayer label adapted for application to deformable thermoplastic packages, with such label being impervious to water and sufficiently resilient to avoid permanent deformation upon deflection. The label includes a thermoplastic stress-compensating stratum having a relatively elastic structure which has a Young\s Modulus less than about 2800 Kg/cm2 and a lower surface adapted to be bonded to the outer surface of the thermoplastic package during in-mold labeling procedures. The label further includes a thermoplastic label stratum having a Young\s Modulus which exceeds about 7030 Kg/cm2 and a smooth label surface. The label stratum is laminated to the upper surface of the stress-compensating stratum. The stress-compensating stratum structure accommodates the thermal stresses and package shrinkage inherent in such in-mold labeling procedures, as well as stresses imposed by deformation of the package in use. As a result of such accommodating capabilities, the label surface of the label stratum is effectively isolated from such stresses and shrinkage and remains substantially smooth, and the laminated bonds between the label stratum, the stress-compensating stratum, and the deformable package remain substantially intact.

대표청구항 ▼

A non-paper, flexible, resilient, multilayer label adapted for application to a deformable thermoplastic package by in-mold labeling procedures, said label comprising: (a) An elastic, machineable, thermoplastic, stress-compensating stratum which comprises an unfoamed film having a Young\s Modulus le

A non-paper, flexible, resilient, multilayer label adapted for application to a deformable thermoplastic package by in-mold labeling procedures, said label comprising: (a) An elastic, machineable, thermoplastic, stress-compensating stratum which comprises an unfoamed film having a Young\s Modulus less than about 2800 Kg/cm2, said stress-compensating stratum having an upper and lower surface and a thickness in the range of from about 0.019 mm to about 0.076 mm; (b) a thermoplastic, low temperature heat-activated sealant layer generally coextensive with and laminated to the lower surface of said stress-compensating stratum; and (c) a thermoplastic label stratum which has a Young\s Modulus greater than about 7030 Kg/cm2 and a smooth label surface, said label stratum being laminated to the upper surface of said stress-compensating stratum and having a thickness in the range of from about 0.0064 mm to about 0.025 mm.