Several other types of cushioning are available including suspension cushions, thermoformed end caps, Visco-elastic materials, and various types of shock mounts.ĭrop test of cushioned package to measure the transmitted shock Note that inflated air pillows used for void-fill are not suited for cushioning. A variety of engineered inflatable air cushions are also available.
These sheets can be layered or wrapped around items to be shipped. Inflated products – Bubble wrap consists of sheets of plastic film with enclosed “bubbles” of air. molded pulp is made from recycled newsprint and is recyclable. Pulp can be molded into shapes suitable for cushioning and for immobilizing products in a package. It is also used to form engineered structures. These fill the box, fully encapsulating the product to immobilize it. įoam-in-place is another method of using polyurethane foams. Some degradable foams are also available. Convoluted (or finger) foams are sometimes used.
These can be molded engineered shapes or sheets which are cut and glued into cushion structures. Several types of polymeric foams are used for cushioning, the most common being expanded polystyrene, polypropylene, polyethylene, and polyurethane. Paperboard composite honeycomb structures are also used for cushioning. These structures are designed to crush and deform under shock stress and provide some degree of cushioning. Multi-layer or cut-and-folded shapes of corrugated board can be used as cushions. Movers often wrap objects with several layers of Kraft paper or embossed pulp before putting them into boxes. Creped cellulose wadding is also available. Heavier grades of paper provide more weight-bearing ability than old newspapers. Paper can be manually or mechanically wadded up and used as a cushioning material. The amount of loose fill material required and the transmitted shock levels vary with the specific type of material. This includes expanded polystyrene foam pieces ( foam peanuts), similar pieces made of starch-based foams, and common popcorn. Some cushion products are flowable and are packed loosely around the items in the box. Coiled cable mount for heavy duty reusable containers
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