Abstract: An improved liner having an elastic securing mechanism that may be placed in a vessel to form and maintain a barrier between the vessel and objects contained therein. The liner includes an elastic securing band secured around the perimeter of the open top end of the liner using a plurality of spaced-apart tack welds or rivets. In one embodiment, the liner material is folded over the elastic and ultrasonic sealing is used to burn through the elastic and seal the folded liner material to itself thereby securing the elastic to the liner. In use, the liner is placed within a receptacle of the vessel and the open top end is folded outward and downward over a rim of the vessel such that the elastic engages an outside of the vessel to form a secure and snug fit of the liner to the vessel. Advantageously, a failure to a portion of the elastic is limited to that portion of the elastic only and propagation of the failure is limited by the rivets.

Abstract: A multi-layer, high temperature film comprising at least three layers produced by melt extrusion coating a high heat resistant copolyester thermoplastic elastomer (COPE) layer onto an amorphous polyethylene terephthalate (APET) layer of a co-extruded, biaxially oriented, polyester homopolymer film comprising a straight crystalline polyethylene terephthalate (PET) layer and the APET layer to form a three layer film. In another embodiment, a second intermediate layer of amorphous polyethylene terephthalate (APET) film is melt extrusion coated to an opposite side of the COPE layer of the three layer film, and a second layer of PET is connected to the second APET layer opposite the COPE layer to form a five layer film. In another embodiment, a second APET layer is connected to an opposite side of the PET layer of the three layer film, and a second COPE layer is melt extrusion coated to the second APET layer opposite the PET layer.