Abstract: A flexible acoustical wall covering, method of making same, and wall panel employing same are provided wherein such wall covering is comprised of a laminated construction comprised of a substrate and an outer layer bonded against the substrate with the outer layer having a roughened outside surface defined by projections and indentations which serve as miniature sound baffles and a plurality of spaced openings in and disposed perpendicularly through the laminated construction which allow sound waves to pass therethrough with a fluid impervious film sealing the openings and enabling the wall covering to be used as a fluid impervious covering yet with the film allowing substantially unobstructed passage of the sound waves therethrough.

Abstract: Flexible packaging films of high density polyethylene capable of forming easily openable heatseals can be made by coextruding a layer of the high density polyethylene adjacent to a layer of a blend of an ionomer and a copolymer of ethylene and vinyl acetate or an ester of acrylic and or methacrylic acid. Packages made from the films by forming a blend-to-blend heatseal can be opened by a force between one and five pounds per inch width.