A tear resistant multilayer film including a stack of polymeric layers that includes first and second layer types. Layers of the first layer type includes a first polymer and the layers of the second layer type includes a second polymer. The first polymer is polyethylene terephthalate or a first ester block copolymer that includes polyethylene terephthalate blocks at a weight percent of the first ester block copolymer of at least 50 percent and further includes glycol-modified polyethylene terephthalate blocks. The second polymer is sebacic acid-substituted polyethylene terephthalate or a second ester block copolymer that includes sebacic acid-substituted polyethylene terephthalate blocks at a weight percent of the second ester block copolymer of at least 50 percent and further includes polyethylene terephthalate blocks or glycol-modified polyethylene terephthalate blocks. The tear resistant multilayer film includes a total of 8 to 300 layers of the first and second layer types.
申请公布号
WO2016099941(A1)
申请公布日期
2016.06.23
申请号
WO2015US63898
申请日期
2015.12.04
申请人
3M INNOVATIVE PROPERTIES COMPANY
发明人
LIU, RICHARD Y.;JOHNSON, STEPHEN A.;PURCELL, JOHN P.