Abstract: A shrink film comprising a biaxially oriented polymer film comprising polypropylene having a machine direction shrinkage and a transverse direction shrinkage that is less than or equal to 50% of the machine direction shrinkage, and wherein the machine direction shrinkage is greater than 15% and the transverse direction shrinkage is less than 10% at about 140.degree. C. The shrink film is formed by a process comprising subjecting a biaxially oriented polymer film to a treatment which comprises the heating the film to a temperature of about 100.degree. C. to 180.degree. C. The heated film is drawn under conditions to extend it by at least 1.05 times its original length in the machine direction. The drawn film is cooled under tension to produce a shrink film having the specified ratio between the machine direction shrinkage and the transverse direction shrinkage in addition to having a kinetic film-to-film coefficient of friction of about 0.05 to 0.40. The shrink film is suitable for wrapping contoured articles.

Abstract: A process for the preparation of an oriented multilayer laminate film having at least three layers, said method including: (a) extruding in a molten state (i) polypropylene selected from a homopolymer or a copolymer of propylene wherein said copolymer comprises an alkene monomer having 2 or 4-6 carbons; (ii) adhesive; and (iii) co-polyester of a polyesterification reaction product where the reactants are at least one glycol and at least one dibasic acid with the total reactants being at least three of the glycols and dibasic acids, (b) laminating (i), (ii) and (iii) together in the molten state to form the film; (c) cooling the film; (d) drawing the film in a temperature range that allows orienting without breaking; and (e) heat setting the oriented film.

Abstract: A container providing controlled atmospheric storage of fresh fruits and vegetables to improve retention of product freshness by adjusting the carbon dioxide to oxygen ratio, for the storage of said fruits or vegetable can be attained and maintained, thereby retarding premature maturation and spoilage. The environment is controlled by providing a microporous membrane panel of limited carbon dioxide and oxygen permeability on an otherwise substantially impermeable container. The size of this area is a function of its permeability, the amount and respiration rate of the contents, and the ratio of carbon dioxide to oxygen desired.