In-mold label film and method

US6004682A · kind A · utility

Assignee

• Avery Dennison Corporation · US

Inventors

• Mitchell J. Rackovan · Mentor, US
• Kushalkumar M. Baid · Mentor, US
• Gerald G. Popely · Mentor, US
• Ronald Lloyd

Key dates

• Filing date: Jun 5, 1997
• Grant date: Dec 21, 1999
• Expiry date: Jun 5, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/3192
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

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.