| abstract |
Provided is a food packaging film that is less expensive than prior art materials and is excellent in carbon dioxide, oxygen, and nitrogen barrier properties. A barrier composition that is injection moldable, can be a transparent film, or can be incorporated into a multilayer film product (by coextrusion and / or lamination), on a dry basis, a) 45-90% by weight of starch or modified starch; b) 4-12% by weight selected from polyvinyl alcohol, polyvinyl acetate and copolymers of ethylene and vinyl alcohol and having a melting point compatible with the molten starch component C) 5 to 45 wt% amorphous mixture of sorbitol and other polyhydric alcohols or esters thereof; d) 0.3 to 2.5 wt% C12-22 fatty acids or salts; e) 0.25 to 3% by weight of an emulsifier system having a hydrophilic lipophilic balance value of 2 to 10; [Selection] Figure 3 |