초록 ▼

The disclosure relates to a multi-layer snack food packaging material particularly suitable for forming potato chip bags and the like. The material comprises an outer layer of polypropylene, a low density polyethylene laminator and an inner layer which is, itself, a coextrusion. The inner coextruded

The disclosure relates to a multi-layer snack food packaging material particularly suitable for forming potato chip bags and the like. The material comprises an outer layer of polypropylene, a low density polyethylene laminator and an inner layer which is, itself, a coextrusion. The inner coextruded layer comprises a first layer of high density polyethylene, a second layer of polypropylene and a third layer of ethylene methyl acrylate. The ethylene methyl acrylate is coated with an emulsion of polyvinylidene chloride, which seals the inner layers together upon application of heat. The package has many advantageous characteristics for use in snack food packaging and does not require glassine. The material has excellent oxygen and moisture barrier properties, good stiffness, good grease resistance and bond strength appropriate for easy opening by the consumer.

대표청구항 ▼

A flexible, heat sealable packaging material which comprises a lamination of (a) an outer film of polypropylene, (b) a laminate of low density polyethylene, and (c) an inner coextruded film which includes a coextrusion of high density polyethylene, polypropylene and ethylene methyl acrylate, said et

A flexible, heat sealable packaging material which comprises a lamination of (a) an outer film of polypropylene, (b) a laminate of low density polyethylene, and (c) an inner coextruded film which includes a coextrusion of high density polyethylene, polypropylene and ethylene methyl acrylate, said ethylene methyl acrylate having a coating of a polyvinylidene chloride emulsion on its exposed surface.