Avery Dennison Corporation

Other

Gerald G Popely

Mitchell J Rackovan

Kushalkumar M Baid

Ronald V Lloyd

Melvin S Freedman

Oscar C Mascarenhas

Cling film and articles

An oriented polymeric in-mold label film comprises a hot-stretched, annealed, linerless self-wound film lamina and has a face layer for printing and a base layer which includes a heat-activatable adhesive. The heat-shrinkability of the film is balanced thickness-wise to minimize curl and allow the film to be printed in conventional label-printing presses. An antistat may be included only in the charge for the base layer which includes the heat-activatable adhesive. In the manufacture of labelled blow-molded containers, sheets and labels formed from the film may be handled at high speeds while maintaining accurate registration and dimensional and positional integrity even in the absence of any reinforcing backing, yet the labels perform well on deformable containers such as shampoo bottles.

In-mold label film and method

In one embodiment, the invention relates to an ink-imprinted and reusable multilayer cling film of at least one layer for use in combination with a substrate having a rigid smooth surface comprising a non-vinyl flexible polymer cling film which has two smooth surfaces, is substantially free of added plasticizer and provides a 180.degree. peel force after application to glass of from about 30 to about 2500 gms after aging in a 140.degree. F. oven for 72 hours. In another embodiment, the invention relates to an ink-printed and reusable multilayer cling film of at least two layers which can cling to substrates having a rigid smooth surface without the use of an adhesive material. For example, such multilayer cling film may comprise: (A) a first layer of at least one thermoplastic polymer film having an ink-imprinted upper surface and a smooth lower surface; and (B) a second layer which is a polymeric cling film having an upper surface and a lower surface and comprising at least one non-vinyl thermoplastic elastomer wherein the upper surface of the second layer is in contact with and adhered to the lower surface of the first layer. In yet another embodiment, the invention relates to an article comprising a substrate having a rigid smooth surface and an ink-imprinted flexible polymeric cling film of at least two layers which are affixed to the smooth surface of the substrate without adhesive whereby the cling film is removably adhered to the substrate.

Cling films and articles

An oriented polymeric in-mold label film includes a hot-stretched, annealed, linerless self-wound film lamina and has a face layer for printing and a base layer which includes a heat-activatable adhesive. The film may be hot-stretched and annealed at softening and annealing temperatures exceeding the temperature at which the adhesive is activated by passing the film across rolls for imparting heat to and removing heat from the film under controlled time-temperature-direction conditions to heat at least the majority of the thickness of the film to such softening and annealing temperatures without sticking of the adhesive to the rolls. The heat-shrinkability of the film is balanced thickness-wise to minimize curl and allow the film to be printed in conventional label-printing presses. An antistat may be included only in the charge for the base layer which includes the heat-activatable adhesive. In the manufacture of labelled blow-molded containers, sheets and labels formed from the film may be handled at high speeds while maintaining accurate registration and dimensional and positional integrity even in the absence of any reinforcing backing, yet the labels perform well on deformable containers such as shampoo bottles.

In-mold labelling a coextruded, stretched and annealed label

A uniaxially oriented coextruded polymeric in-mold label film includes a uniaxially hot-stretched, annealed, linerless self-wound film having a face layer for printing and a base layer which includes a heat-activatable adhesive. The heat-shrinkability of the film is balanced thickness-wise to minimize curl and allow the film to be printed in conventional label-printing presses. An antistat is included only in the charge for the base layer which includes the heat-activatable adhesive. In the manufacture of labelled blow-molded containers, sheets and labels formed from the film may be handled at high speeds while maintaining accurate registration and dimensional and positional integrity even in the absence of any reinforcing backing, yet the labels perform well on deformable containers such as shampoo bottles.

Growing community of inventors

Mentor, OH, United States of America

Gerald G Popely