an amide / olefin polymeric film laminate suitable for packaging , water cooking , and storing food within the package is prepared by coextruding polyamide and polyolefin layers to form a laminate and then cross - linking the laminate by irradiation . prior art polyolefin / polyamide laminates delaminate readily when subjected to agitation in hot water , but this tendency is significantly reduced by laminates according to the present invention .