Resistance of Polymer Films to Penetration by Lesser Grain Borer and Description of a Device for Measuring Resistance13

Abstract

In tests with a newly developed laboratory device for determining the resistance to penetration of flexible packaging films by adults of Rhyzopertha dominica (F.), polyurethane and polyester films were the most resistant of 18 types tested. Polypropylene and fluorinated carbon polymer films varied in resistance to penetration. Plasticized polyvinyl chloride, ionomer, cellulose propionate, polyvinyl alcohol, saran, and polyethylene-ethylene vinyl acetate copolymer films were susceptible to penetration, as were 7 types of cellophanes.