Multiply built up buffer structure and manufacturing method thereof

Abstract

The present invention provides a multiply built up buffer structure and a manufacturing thereof. The buffer structure includes at least two buffer members and a pair of end caps. The buffer member is made of paper material, having an elongate strip configuration having a U-shaped cross-section forming a hollow chamber shaped to correspond to the configuration thereof. The hollow chamber extends between and completely through opposite ends of the buffer member. One of the buffer members is movably received in the hollow chamber of the other buffer member to form an extendible strip. The end cap is made of paper material, having a U-shaped configuration forming therein a hollow chamber corresponding in shape to the configuration thereof. The hollow chamber extends between and completely through opposite ends of the end cap. The hollow chamber of the end cap receives at least one reinforcement piece made of paper material therein. The pair of end caps is respectively and movably fit into opposite ends of the extendible strip in accordance with the hollow chambers of the respective buffer members.

1 . A buffer structure, comprising:
 at least two buffer members, the buffer members being made of paper material comprising base paper, each of said buffer members being of an elongate strip configuration having a U-shaped cross-section forming a hollow chamber shaped to correspond to the configuration thereof, the hollow chamber extending between and completely through opposite ends of the buffer member, one of the buffer members being movably received in the hollow chamber of the other buffer member to form an extendible strip; and   a pair of end caps, the pair of end caps being made of paper material comprising base paper, each end cap being of a U-shaped configuration and forming therein a hollow chamber corresponding in shape to the configuration thereof, the hollow chamber extending between and completely through opposite ends of the end cap, the hollow chamber of each end cap receiving at least one reinforcement piece made of paper material therein, the pair of end caps being respectively and movably fit into opposite ends of the extendible strip in accordance with the hollow chambers of the respective buffer members;   wherein said buffer structure and said pair of end caps are slidingly adjustable to conform to a length of a product accommodated therein.   
     
     
         2 . The buffer structure as claimed in  claim 1  further comprising at least one stop block made of paper material and wherein each buffer member forms a trough for configuring the U-shape, the stop block being set in the trough of at least one of the buffer members. 
     
     
         3 . The buffer structure as claimed in  claim 2 , wherein the stop block comprises a pair of U-shaped pieces made of paper material, the U-shaped pieces being mated together to make a rectangular body. 
     
     
         4 . The buffer structure as claimed in  claim 1 , wherein each buffer member has two outer side walls, an outer bottom wall, and an inner bottom wall each forming a plurality of pressure-resistant patterns extending in a direction parallel to length of the buffer member and wherein each end cap has two outer side walls and an outer bottom wall each forming a plurality of pressure-resistant patterns extending in a direction parallel to height of the end cap. 
     
     
         5 . The buffer structure as claimed in  claim 1 , wherein each buffer member has a cross-section that comprises two vertical sections and a horizontal section connecting between the vertical sections to constitute the U-shape, the hollow chamber of the buffer member correspondingly comprising two vertical sections and a horizontal section, and wherein each end cap has a cross-section comprising two vertical sections and a horizontal section connecting between the vertical sections, the two vertical sections of the end cap being respectively fit into the two vertical sections of the hollow chamber of the corresponding buffer member. 
     
     
         6 . The buffer structure as claimed in  claim 1  further comprising a plurality of additional buffer members, the buffer members being movably fit into each other to from the extendible strip. 
     
     
         7 . The buffer structure as claimed in  claim 1 , wherein the hollow chamber of each buffer member receives at least one reinforcement piece made of paper material therein. 
     
     
         8 . (canceled) 
     
     
         9 . The buffer structure as claimed in  claim 1 , wherein the base paper is corrugated board.