Packaging material provided with cushioning members

Abstract

To improve cushioning effect for a packaged object without causing cost increase and prevent positional shift of cushioning members without causing lowering of the strength and durability of a packaging box, a packaging material includes a packaging box and cushioning members, a bottom panel and a cover panel of the packaging box being made of inwardly bendable inner flaps and outer flaps respectively, each of the inner flaps being provided with at least a through hole, the cushioning members being provided in inner side surfaces thereof with recesses in which corner portions or side portions of an object to be packaged are fitted, and on outer side surfaces thereof with cushioning projections fitted in the through holes of the inner flaps, the length of the cushioning projections being set larger than the thickness of the inner flaps so as to form a clearance between the inner flaps and cushioning projections when the cushioning members are housed in the packaging box.

1 . A packaging material comprising a packaging box and cushioning members, a bottom panel and a cover panel of the packaging box being made of inwardly bendable inner flaps and outer flaps respectively, each of the inner flaps being provided with at least a through hole, the cushioning members being provided in inner side surfaces thereof with recesses in which corner portions or side portions of an object to be packaged are fitted, and on outer side surfaces thereof with cushioning projections fitted in the through holes of the inner flaps, the length of the cushioning projections being set larger than the thickness of the inner flaps, whereby a clearance is formed between the inner flaps and the portions of the cushioning members which are other than the cushioning projections when the cushioning members are housed in the packaging box.  
   
   
       2 . A packaging material according to  claim 1 , wherein the packaging box is made of a corrugated board, the cushioning members being made of expanded polystyrene.  
   
   
       3 . A packaging material according to  claim 1 , wherein the size of the cushioning projections is set slightly larger than that of the through holes of the inner flaps.  
   
   
       4 . A packaging material according to  claim 1 , wherein shape of the through holes of the inner flaps and that of the cushioning projections of the cushioning members are set so that recognition of the longitudinal direction can be made.  
   
   
       5 . A packaging material according to  claim 1 , wherein the cushioning members are provided on the upper and lower surfaces thereof with a plurality of cushioning projections respectively.  
   
   
       6 . A packaging material according to  claim 1 , wherein the object to be packaged is electrical equipment.  
   
   
       7 . A packaging material according to  claim 1 , wherein positions of the cushioning projections are set correspondingly to that of the center of gravity of the object to be packaged.