A nontransparent laminated film containing aluminum foil proved relatively resistant to insect penetration– but not insect proof–in tests of film materials used for packaging dried fruits, nuts, candies, cereals, grains, meats, cheese, and other food products.

This work was undertaken at the request of and in co-operation with the California Walnut Growers Association.

The above progress report is based on Research Project No. 1513.