Patent ID: 8142603
Filing Date: 2012-03-27
Classification: B31B,B65B,B65D,Y10T

Abstract:
1. A method of attaching an active film and foil combination onto a flexible package comprising the steps of: providing a foil having a polymer sealing layer; providing an active film comprising an active agent and a polymer; providing a flexible package; heating the foil such that the polymer sealing layer becomes pliable; selecting a sealing area of the foil for forming a seal between the foil and the flexible package and a non-sealing area of the foil not to be sealed to the flexible package; applying the active film to the polymer sealing layer of the heated foil in the non-sealing area of the heated foil to produce an active film and foil combination; applying sufficient pressure to the active film and foil combination and sufficient heat to the foil so that the active film adheres to the polymer sealing layer of the foil; and adhering the active film and foil combination to the flexible package by forming a seal between the sealing area of the foil and the flexible package.