Paperboard Three-Dimensionally Molded Pallet

Abstract

A paperboard three-dimensionally molded pallet having sufficient rigidity in its load carrying surface and load bearing strength in its leg portions. The pallet is so designed that when it is finally treated as a waste, it can be recycled as new paperboard three-dimensionally molded pallets or a material for the other paper products requiring rigidity. The pallet comprises a paper-made plate-like top plate member ( 1 ) and paper-made cylinder-with-base legs ( 2 ). A plurality of through holes ( 15 ) is provided in the top plate member ( 1 ), and the cylinder-with-base-type leg ( 2 ) is inserted into the through hole ( 15 ) and then joined to the top plate member ( 1 ) with a water soluble adhesive agent. The top plate member ( 1 ) and the cylinder-with-base-type leg ( 2 ) are produced by placing a water-absorbed plane laminated paper as a raw material in a mold to shape it into a specific shape by thermal dehydration under pressure process.

1 . A paperboard three-dimensionally molded pallet comprising:
 a plane top plate member made of paper; and   a cylinder-with-base type leg member made of paper;   wherein   a plurality of through holes is provided in the top plate member, a portion of the leg member is inserted into the through hole and joined to the top plate member using water soluble adhesive, and the top plate member and the leg member are made through highly-compressed molding process in which a water absorbed plane laminated paper as a raw material is placed into a mold and then molded into a prescribed shape through a pressurized thermal dehydration process.   
     
     
         2 . A paperboard three-dimensionally molded pallet according to  claim 1 , wherein the top plate member is formed with a rising sidewall at a side end portion thereof and on a plane portion of an inner side of the sidewall, a reinforced corrugated board is joined using a water soluble adhesive. 
     
     
         3 . A paperboard three-dimensionally molded pallet according to  claim 1 , wherein the top plate member comprises:
 a plate-like core material having convexo-concave shape in cross section; and   a plate-like outer member having a size capable of covering a top surface and/or a rear surface of the core material being arranged on and joined to the core material using a water soluble adhesive.   
     
     
         4 . A paperboard three-dimensionally molded pallet according to  claim 1 , wherein the cylinder-with-base-type leg member comprises:
 a round bottom surface;   a wall surface having an arcuate shape in cross section, which rises upward from the round bottom surface; and   an outward flange extending horizontally outward from the wall surface,   an upper surface of the top plate member and the flange portion of the leg member being joined together.   
     
     
         5 . A paperboard three-dimensionally molded pallet according to  claim 4 , wherein the wall surface of the leg members has a plurality of divided wall surfaces divided into 3 to 8 along a circumferential direction of the leg member and adjacent side edges of the divided wall surfaces are contacted with or placed close to each other. 
     
     
         6 . A paperboard three-dimensionally molded pallet according to  claim 5 , wherein a plurality of the cylinder-with-base type leg members are superimposed in such a way that the side edges of the superimposed divided-wall surfaces of the leg member are arranged along the circumferential direction without overlapping with each other. 
     
     
         7 . A paperboard three-dimensionally molded pallet according to  claim 1 , wherein at a circumferential portion of the through hole of the top plate member, a concave portion having a depth with a same dimension as the thickness of the flange portion is provided. 
     
     
         8 . A paperboard three-dimensionally molded pallet according to  claim 1 , wherein a bottom plate having a size large enough to join all the leg members is joined onto the bottom surfaces of the leg members using water soluble adhesive.