Abstract: A laminated film useful for packaging includes two outer layers and a core layer of a polypropylene resin interposed therebetween. Each of the outer layers includes (A) an ethylene-.alpha.-olefin copolymer having a density of less than 0.910 g/cm.sup.3 but not less than 0.870 g/cm.sup.3 and an ethylene content of at least 50 mol % and showing only one endothermic peak when analyzed by differential scanning calorimetry (DSC), (B) an ethylene-.alpha.-olefin copolymer having a density of 0.910-0.935 g/cm.sup.3 and an ethylene content of at least 50 mol %, and (C) an anti-fogging agent. The density of (B) is greater by at least 0.008 g/cm.sup.3 than that of (A).

Abstract: A heat shrinkable multilayer film which includes two outer layers consisting essentially of a polyethylene resin, and one or more inner layers interposed between the outer layers, wherein at least one of the inner layers comprises a blend of a polypropylene resin and a substantially linear ethylene/alpha-olefin copolymer, wherein said copolymer has a molecular weight distribution Mw/Mn of not greater than about 2 and a melt flow ratio I.sub.10 /I.sub.2 of not smaller than 7.0.

Abstract: A wrapping multilayer film comprising at least 5 layers of(A) both the outermost layers each comprising an ethylene-.alpha.-olefin copolymer having an ethylene content of at least 50 mol %,(B) layers each comprising a propylene polymer and being disposed between the outermost layers (A), and(C) a layer comprising recycled resins and being disposed between the layers (B).

Abstract: A heat shrinkable laminate film is disclosed which includes a core layer formed of an ethylene-vinyl alcohol copolymer, two intermediate layers provided on opposite surfaces of the core layer and each formed of a copolymer selected from (a) copolymers of an unsaturated carboxylic acid or a derivative thereof and propylene and (b) copolymers of an unsaturated carboxylic acid or a derivative thereof and an alpha-olefin-propylene copolymer containing not greater than 10% by weight of alpha-olefin comonomer, and two outer layers provided on respective surfaces of the intermediate layers and each formed of an ethylene polymer.

Abstract: A tubular multilayer film including at least two, biaxially stretched tubular layers each formed of a polypropylene resin, wherein the innermost layer contains spherical antiblocking agent particles having an average particle size of 0.2 to 5 .mu.m in an amount of 0.1 to 0.7% by weight, and the outermost layer is free of the spherical antiblocking agent particles is disclosed. The multilayer film may be prepared by biaxially stretching a multilayer tubular raw sheet having an innermost polypropylene layer containing spherical antiblocking agent particles and an outermost polypropylene layer free of such antiblocking agent particles.

Abstract: A heat-shrinkable polypropylene film adapted to be printed with, particularly, a flexographic ink is disclosed, which comprises a single layer heat-shrinkable film of a polypropylene resin composition containing spherical silicone resin fine particles of 0.2 to 5 microns in average particle size in a content of 0.1 to 0.7% by weight or a multi-layer heat-shrinkable film wherein at least one of the surface layers is such a polypropylene resin composition, with at least one surface of the single layer film or one surface of the surface layer of the multi-layer film having been subjected to corona discharge treatment to such degree that wettability index of the treated surface becomes 36 to 42 dyn/cm.

Abstract: A multi-ply, heat-shrinkable film has a surface layer for contact with a cooked or processed meat product which is formed of an ethylene-ethyl acrylate-maleic anhydride copolymer or a mixture of the ethylene-ethyl acrylate-maleic anhydride copolymer and a polyolefin, with the content of ethyl acrylate component in the surface layer being 2 to 20% by weight and the content of maleic anhydride component being 1 to 5% by weight. A cooked or processed meat product may be packaged with the multi-ply, heat-shrinkable film and formed according to "zero-loss cooking method".

Abstract: A thermally shrinkable film with a liquid detecting function is prepared by coating or printing one side of the film with an ink which turns color or dissolves upon contact with a liquid. An item or object to be packaged is packaged in a thermally shrinkable film. The thermally shrinkable film and the package are useful for detecting a liquid leaking from the packed item or object, or entering into the package from the outside. This permits a visual inspection of the quality of the item or object packaged therein or of contamination by a foreign substance.

Abstract: A composite film suitable for shrink-packaging bony cut meat, including at least one oxygen-impermeable layer, and at least one heat sealable, surface layer formed of a thermoplastic resin, said film having the following physical properties:C.sub.L .gtoreq.15C.sub.T .gtoreq.1580.ltoreq.S.sub.L .ltoreq.25080.ltoreq.S.sub.T .ltoreq.250T.gtoreq.1.2S.sub.L +60T.gtoreq.1.2S.sub.T +60wherein C.sub.L and C.sub.T represent the thermal contraction percentages (%) of the film measured in 90.degree. C. hot water in the longitudinal and transverse directions, respectively, S.sub.L and S.sub.T represent the thermal contraction stresses (g/cm) of the film measured in 90.degree. C. hot water in the longitudinal and transverse directions, respectively, and T represents the piercing strength (g) of the film measured in 90.degree. C. hot water.

Abstract: A heat-shrinkable, composite packaging film comprising (a) a core layer of saponified ethylene-vinyl acetate copolymer; (b) a first polymeric outer wall bonded to one side of the core layer; and (c) a second, heat-sealable polymeric outer wall bonded to the other side of the core layer; said first and second outer walls each having a permeability to hot water having a temperature of 90.degree. C. of less than 600 g/m.sup.2 /hour. The film is suitable for packaging meat and other food products subjected to sterilization and heat-shrinking process in a hot water bath.