Abstract: A 100% solids laminating adhesive for flexible packaging with an improved range of adhesion and bond strength to various substrates along with reduced odor during application and improved ink compatibility and ink bonding. The adhesive is an epoxy-acrylate/amine formulation. Methods of application of the inventive adhesive are also disclosed.
Abstract: A laminating and coating system is employed with a gravure or flexographic set up using an enclosed doctor blade system with recirculation to coat adhesive onto a film and then laminate it to another film. The preferred adhesive is a two-stage epoxy consisting of a zero VOC 100% solids laminating adhesive having a viscosity of 200-1500 cps which remains within a desired range of 50-100 degrees F for up to 3 hours that will cure at ambient temperature. The adhesive is solventless and is unaffected by moisture. The adhesive consists of ingredients which make it permissible for use as an adhesive for laminations of films designed for food packaging pursuant to F.D.A. Regulation 175.105. The adhesive is formulated to avoid emission of odors and can be used in a four or five roll coating system.
Abstract: A laminating and coating system is employed with a gravure or flexographic set up using an enclosed doctor blade system with recirculation to coat adhesive onto a film and then laminate it to another film. The preferred adhesive is a two-stage epoxy consisting of a zero VOC 100% solids laminating adhesive having a mixed viscosity of 200-400 cps with the viscosity remaining within a desired range of 50-110 degrees F for up to 3 hours that will cure at ambient temperature. The adhesive is solventless and is unaffected by moisture. The adhesive consists of ingredients which make it permissible for use as an adhesive for laminations of films designed for food packaging pursuant to F.D.A. Regulation 175.105.
Type:
Grant
Filed:
October 31, 2000
Date of Patent:
October 15, 2002
Assignee:
AdLamCo., Inc.
Inventors:
Peter J. McQuaid, Werner Lynen, Cathy D. Kephart
Abstract: A two doctor blade laminating and coating system is employed with a gravure or flexographic set up to coat adhesive onto a film and then laminate it to another film. The adhesive is pumped into the chamber and a sump receives adhesive recirculated back from the enclosed chamber. Adhesive is mixed and supplied to the sump while the process is being conducted so that the enclosed chamber is continuously full of adhesive. The preferred adhesive is a two-stage epoxy having part A and part B mixed together in a desired ratio. The adhesive is a zero VOC 100% solids laminating adhesive having a mixed viscosity of 200-1500 cps with the viscosity remaining within a desired range at room temperature, defined as a temperature range of 50-100 degrees F. for up to 3 hours. The adhesive is solventless and is unaffected by moisture. The adhesive consists of ingredients which make it permissible for use as an adhesive for laminations of films designed for food packaging pursuant to F.D.A. Regulation 175.105.