Packaging Part Iiimaterials

The basic food-packaging materials can be divided into glass, metal, paper, and plastic. Each of these materials has both advantages and disadvantages (Table 1). The proper selection of these materials should be based on the functional requirements (see Packaging: part iā€” general considerations) and the economics of specific applications. To optimize the performance and cost, most food packages use more than one type of packaging material. For example, the packaging for a typical box of cereal consists of an inner plastic bag for moisture protection and an outer paperboard box for strength and rigidity.

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