Patent ID: 6416798
Filing Date: 2002-07-09
Classification: B65B,B65D

Abstract:
A process for packaging a perishable product and providing a tamperproof visible date code on the resultant package comprising;providing form, fill, and seal package making process equipment; providing to said equipment a supply of plastic film in strip form having opposed first and second lateral edges and having a thermally sealable side; printing a date code adjacent to said first edge on said sealable side; conveying said film through a folding device to cause said printed date code to be overlaid by said second lateral edge of said plastic film, said second lateral edge being transparent; thermally sealing the lateral edges of said film together with said second edge overlying said imprinted area thereby forming a tube with said, printed date code being visible through said thermally sealed second edge; forming said tube into a series of individual packages, filling said packages with said perishable product; and sealing said packages, each individual package bearing a protected, visible date code.