Patent ID: 7923119
Filing Date: 2011-04-12
Classification: B32B,Y10T

Abstract:
1. A packaged body comprising: a tray having a surface layer containing a polystyrene-based resin; and a multilayer film to top seal the tray such that the multilayer film is attached only to a peripheral edge part of the tray after a product has been loaded into the tray, the multilayer film comprising at least a first layer and a second layer, the first layer containing 50% by weight or more of at least one selected from the group consisting of: (a) a copolymer comprising a conjugated diene and a vinyl aromatic compound; (b) a copolymer resulting from hydrogenation of a copolymer comprising a conjugated diene and a vinyl aromatic compound; (c) a combined resin of: (d) a mixture of: (e) a mixture of: the multilayer film having: a gel fraction of from 0.5 to 50% by weight; a thickness of 70 μm or less; a tensile modulus of from 40 to 300 MPa in an any direction; and a thermal shrinkage ratio at 200° F. of from 15 to 75% in any direction.