Patent ID: 7157126

Claim:
A bag comprising a multilayer structure comprising: I. a multilayer tear resisting composite plastic film structure consisting essentially of: a) an oriented polymer film layer having a top surface and a inner surface; b) a thermal bonding polymer layer on the oriented polymer film layer inner surface substantially coextensive thereto, the thermal bonding polymer layer having a thickness between 10% and 40% of a combined thickness of the oriented polymer film layer and the thermal bonding polymer layer; and c) a reinforcing scrim polymer layer also having an inner surface adjacent and substantially coextensive with the thermal bonding polymer layer; and II. at least one additional layer adhered to said multilayer tear resisting composite plastic film structure; wherein said multilayer structure forms said bag; and wherein the oriented polymer film layer, the thermal bonding polymer layer, and the reinforcing scrim polymer layer all have a chemical composition that permits recycling said multilayer tear resisting composite plastic film structure without separating the layers thereof and each individually comprise a synthetic condensation polymer, the synthetic condensation polymers each comprising, in polymerized form: 1) a) a carboxylic acid or a mixture of carboxylic acids, and b) either I) a diamine or a mixture of diamines, or II) a diol or a mixture of diols, or 2) an ω-amino acid having more than 2 carbon atoms, or a mixture of such amino acids, wherein, for the composite structure taken as a whole, at least 90 mol % of a combined total amount of the carboxylic acid or the mixture of carboxylic acids in the synthetic condensation polymers is the same carboxylic acid, at least 90 mol % of a combined total amount of the diamine or the mixture of diamines in the synthetic condensation polymers is the same diamine, at least 90 mol % of a combined total amount of the diols or the mixture of dials in the synthetic condensation polymers is the same diol, and at least 90 mol % of a combined total amount at the amino acid or the mixture or amino acids in the synthetic condensation polymers is the same amino acid.