Tear resistant multilayer film

A tear resistant multilayer film comprising:

• a stack of polymeric layers comprising a plurality of first layers and a plurality of second layers, each layer in the plurality of first layers comprising a first polymer and each layer in the plurality of second layers comprising a second polymer, the polymeric layers arranged such that no two first layers are immediately adjacent and such that no two second layers are immediately adjacent,
• wherein the first polymer is polyethylene terephthalate or a first ester block copolymer comprising polyethylene terephthalate blocks at a weight percent of the first ester block copolymer of at least 50 percent, the first ester block copolymer further comprising glycol-modified polyethylene terephthalate blocks;
• wherein the second polymer is sebacic acid-substituted polyethylene terephthalate or a second ester block copolymer comprising sebacic acid-substituted polyethylene terephthalate blocks at a weight percent of the second ester block copolymer of at least 50 percent, the second ester block copolymer further comprising polyethylene terephthalate blocks, glycol-modified polyethylene terephthalate blocks, or a combination thereof;
• wherein the tear resistant multilayer film includes a total number of the first and second layers in a range of 6 to 30, a total thickness of the pluralities of the first and second layers being in a range of 50 micrometers to 600 micrometers;
• and
• wherein at least one following conditions is satisfied:
• (i) the first polymer is the first ester block copolymer and comprises glycol-modified polyethylene terephthalate blocks at a weight percent of the first ester block copolymer of no less than 5 percent, and
• (ii) the second polymer is the second ester block copolymer and comprises polyethylene terephthalate blocks, glycol-modified polyethylene terephthalate blocks, or a combination thereof at a weight percent of the second ester block copolymer of no less than 5 percent.