Testing Bags for Strength

Abstract

ONE of the more important considerations1 in picking the proper construction for a bag is to decide how much strength is required for protection of the product against transportation, handling, and storage hazards. The only positive proof of the adequacy of any container is to make a sufficient number of shipments under commercial conditions to cover all eventualities in transportation. As this method is often expensive and takes much valuable time, it is sometimes supplanted by or supplemented with factory or laboratory tests. Although these laboratory tests can never be used for conclusive proof, they will usually give sufficient comparative data for the experienced shipper to decide on a bag with some degree of certainty. Because of the possible uncertainties in the factory or laboratory method of proving a bag construction, it is essential that all important unknowns be properly evaluated. Those which are necessary for consideration are: 1. Transportation hazards vary for each shipment, ...