Avery Dennison Corporation

Ramabhadran Balaji

Mark Wisniewski

Bernard S Mientus

Kushalkumar M Baid

Mark E Polasky

Robert O Bucholz

This invention relates to an in-mold label comprising a core layer with a first and second surface and a heat seal layer on the first surface of the core layer, wherein the heat seal layer comprises a polyolefin, having a peak melt temperature of less than about 110&#xb0; C. and where less than about 25% of the polyolefin melts at a temperature of less than 50&#xb0; C. as measured by differential scanning calorimetry. The label may also contain a skin layer on the second surface of the core layer. The invention also relates to plastic substrates bonded to the label. In another aspect, the present invention also relates to a process for in-mold labeling and a process for preparing an in-mold label. The labels and processes provide reduced amounts of one or more of the following: blisters, both before and after bonding, shrinkage, bagginess and gage bands.

In-mold labels and users thereof

In-mold labels and uses thereof

The invention is an in-mold label film comprising at least two layers with one layer being a heat seal layer for bonding the film to a polymer substrate wherein the film has a thermal conductivity of less than about 1.250.times.10.sup.-4 k-Cal/sec cm .degree. C. The invention further includes a process for in-mold labeling comprising the steps of forming a label comprising at least two layers with one layer being a heat seal layer for bonding the film to a plastic substrate wherein the film has a thermal conductivity of less than about 1.250.times.10.sup.-4 k-cal/sec cm .degree. C. inserting the label into a mold for producing the plastic substrate with a inside and outside surface thereafter forming a plastic substrate in the mold with sufficient heat wherein the outside surface of the substrate bonds with the heat seal layer of the label.

Low thermal conductivity in-mold label films

This invention relates to an imaged receptor laminate, comprising: a thermoplastic core layer having a first side and a second side; a thermoplastic skin layer overlying said first side of said core layer, said skin layer comprising a major amount of a thermoplastic copolymer or terpolymer derived from ethylene or propylene and a functional monomer selected from the group consisting of alkyl acrylate, acrylic acid, alkyl acrylic acid, vinyl acetate and combinations of two or more thereof, said skin layer having a melting point in the range of about 50.degree. C. to about 120.degree. C., said core layer having a melting point that is higher than the melting point of said skin layer; and an electrostatically formed and developed image adhered to said skin layer. In one embodiment, a dielectric layer overlies the toned image and the skin layer. In one embodiment, a conductive carrier sheet overlies the foregoing dielectric layer. In one embodiment, an overlaminate protective film layer overlies the image and the skin layer. In one embodiment, an overlaminate protective film layer overlies the dielectric layer. This invention also relates to a process for making the foregoing imaged receptor laminate.

Growing community of inventors

Painesville, OH, United States of America

Ramabhadran Balaji