Cold seal adhesive for product packaging

Abstract

According to one aspect of the present disclosure, a cold seal adhesive material is disclosed. The cold seal adhesive material includes a latex emulsion comprising between 15 to 65 percent of the adhesive by weight and ammoniated water. The adhesive viscosity is between 10 and 450 centipoise at 25 degrees Celsius, the density is between 8.0 and 9.0 pounds per gallon at 25 degrees Celsius, and the basicity is between 9.5 and 12 pH. The adhesive is adapted to be applied as a film on a substrate by a modified flexographic printing press process at a rate of at least 1,750 square feet per minute of the substrate without agglomeration of the adhesive, where the film has a film weight between 0.01 and 0.04 grams per square inch of the substrate and must be compressed with a sealing pressure to produce a cohesive bond between two or more adhesive regions.

Dependencies are inferred from the claim text.