Damper system for transportation

Abstract

A damper system for transportation includes a packaging box for storing a container containing a work and also includes a pair of an upper damper and a lower damper each placed between the packaging box and the container. The upper and lower dampers contain foamed polyethylene or polypropylene, the upper damper includes upper impact-absorbing sections, and the lower damper includes lower impact-absorbing sections. The sum of h 2 and h 1 is equal to the width of an upper or lower space between the packaging box and the container, and h 1 is greater than h 2 , wherein h 2 represents the height of the upper impact-absorbing sections and h 1 represents the height of the lower impact-absorbing sections. The shape of the upper and lower impact-absorbing sections is rectangular parallelepiped shape.

1 . A damper system for transportation, comprising: 
 a packaging box for storing a container containing a work; and    a pair of an upper damper and a lower damper each placed between the packaging box and the container,    wherein the upper and lower dampers contain foamed polyethylene or polypropylene, the upper damper includes upper impact-absorbing sections, the lower damper includes lower impact-absorbing sections, the sum of h 2  and h 1  is equal to the width of an upper or lower space between the packaging box and the container, and h 1  is greater than h 2 , where h 2  represents the height of the upper impact-absorbing sections and h 1  represents the height of the lower impact-absorbing sections.    
   
   
       2 . The damper system according to  claim 1 , wherein h 1  is within a range of 4 to 5 cm and h 2  is within a range of 0.5 to 1.5 cm.  
   
   
       3 . The damper system according to  claim 1 , wherein the lower impact-absorbing sections have a rectangular parallelepiped shape.  
   
   
       4 . The damper system according to  claim 2 , wherein the lower damper has an opening for distributing impact, applied from outside, to the lower impact-absorbing sections, the opening being located at the center of the lower damper.  
   
   
       5 . The damper system according to  claim 1 , wherein the percentage of Sb to Sa is within a range of 3% to 5%, where Sa represents the area of the upper or lower face of the packaging box and Sb represents the area of each of contact portions between the packaging box and the upper impact-absorbing sections or the lower impact-absorbing sections.