Smokable synthetic food-packaging film

A smokable food-packaging film, comprising:

• a layer of a mixture of 45 to 85 wt. % nylon, 10 to 45 wt. % copolymer of an olefin and vinyl alcohol, and 5 to 30 wt. % polyolefin, in which said mixture falls within the pentagonal range defined in FIG. 1 by linear lines connecting the points A, B, C, D and E respectively, said layer having a permeability to 50% concentration of methanol of not less than 200 g/m.sup.2 .multidot.day.multidot.atm at a temperature of 60.degree. C. and a relative humidity of 0%, an oxygen gas permeability of not more than 50 cc/m.sup.2 .multidot.day.multidot.atm at a temperature of 30.degree. C. and a relative humidity of 60%, and a water vapor transmission rate of not more than 70 g/m.sup.2 .multidot.day at a temperature of 40.degree. C. and a relative humidity of 90%;
• and
• at least one layer prepared from a material selected from a group consisting of (a) an olefin copolymer of polyethylene, polypropylene or polybutene-1, (b) a copolymer of ethylene, propylene or butene-1 and vinyl acetate or (meth)acrylic ester, (c) a copolymer of ethylene, propylene or butene-1 and (meth)acrylic acid or a metal salt thereof, (d) an elastomer of plasticized polyvinyl chloride, polyester or a styrene rubber, (e) a cellulose, and (f) a polyamide having an oxygen gas permeability of more than 50 cc/m.sup.2 .multidot.day.multidot.atm at a temperature of 30.degree. C. and a relative humidity of 60%.