Illinois Tool Works Inc.

Robert A Ross

Ronald R Schoenberg

Owen Joseph McGarel

Philip B LoPresti

Gary G Markert

Robert F Flynn

Paul H Beauregard

A pallet sheet has a substantially planar, centrally located base region, and a pair of upwardly angled edge portions. The upper surface portion of the pallet sheet is provided with a plurality of upwardly oriented collapsible cleats for enhancing cushioning and frictional characteristics, and in addition, upwardly and downwardly oriented cleats are also disposed upon the upper and lower surface portions of the upwardly angled edge portions so as to provide enhanced gripping characteristics for the pallet sheet by a gripper bar mechanism of a motorized transport vehicle. Still further, a support system is provided for supporting a plurality of pallet sheets thereon wherein the oppositely disposed edge portions of the pallet sheets can be maintained at their desired predetermined angle.

Pallet sheet with upwardly angled edge portions with oppositely oriented cleats for enhanced gripping

A new and improved tier sheet comprises a three-layer laminated extrusion comprising outer layers of a suitable polypropylene homopolymer, and an inner core layer comprising a suitable polypropylene copolymer blended with a suitable elastomer selected from the group comprising SANTOPRENE&#xae;, KRATON&#xae;; ethyl vinyl acetate (EVA), and a thermoplastic olefin (TPO). By effectively incorporating the elastomer into the inner core layer of the three-layer laminated extrusion, the tier sheet is provided with the requisite amount of softness, elasticity, and resiliency so as to not only permit the multiplicity of cans to, in effect, form sufficiently deep impressions or depressions within the upper and lower tier sheets as the different tiers or layers of tier sheets and cans are disposed upon the transportation pallet within the tiered array comprising the palletized load such that movement of the individual cans with respect to the upper and lower tier sheets will effectively be restricted and prevented but, in addition, the tier sheet can dimensionally recover whereby the depressions and impressions will effectively disappear so as to thereby enable each tier sheet to be readied for use with respect to supporting and restraining new or additional sets of cans in connection with the formation of subsequent palletized loads. Furthermore, the outer layers will not readily delaminate from the inner core layer, and still further, the extrusion process results in the fact that the edge portions of the three-layer laminate are effectively sealed such that the three-layer tier sheet laminate will not readily absorb moisture.

Tier sheet

Growing community of inventors

Denver, CO, United States of America

Robert A Ross