Packing material and gland packing used the material

Abstract

The purpose of the present invention is to provide a packing material having enough durability even if it is used under high temperature and high pressure, and also the purpose of the present invention is to provide the packing material that only one type of the gland packing is enough to be used in a stuffing box. The present invention relates to a packing material comprising an expansive graphite tape is mounted on one or both sides of plain state carbon fiber to make a first laminated tape, and it is twisted to be a filament, and to make a second laminated tape, an expansive graphite sheet is mounted on one or both sides of a reinforcing material comprising plural reinforcing fibers or reinforcing wires aligned in approximately parallel each other or a reinforcing material which a woven is cut into a strip, and said second laminating tape is wound around said filament. Further, it is better that to make a third laminated tape, the expansive graphite tape is mounted on one or both sides of the plain state carbon fiber, and instead of said second laminated tape, the third laminated tape is wound around said filament.

What is claimed is:  
     
         1 . Packing material comprising: 
 an expansive graphite tape is mounted on one or both sides of plain state carbon fiber to make a first laminated tape, and it is twisted to be a filament, and    to make a second laminated tape, an expansive graphite sheet is mounted on one or both sides of a reinforcing material comprising plural reinforcing fibers or reinforcing wires aligned in approximately parallel each other or a reinforcing material which a woven is cut into a strip, and    said second laminating tape is wound around said filament.    
     
     
         2 . The packing material described in  claim 1 , wherein to make a third laminated tape, the expansive graphite tape is mounted on one or both sides of the plain state carbon fiber, and instead of said second laminated tape, the third laminated tape is wound around said filament.  
     
     
         3 . The packing material described in  claim 1 , wherein the filament is made by twisting the first laminated tape so that a reinforcing core is covered with the first laminated tape.  
     
     
         4 . The packing material described in  claim 2 , wherein the filament is made by twisting the first laminated tape so that a reinforcing core is covered with the first laminated tape.  
     
     
         5 . A gland packing made into a predetermined shape by pressing a braided material comprising the braided packing material described in  claim 1 .  
     
     
         6 . A gland packing made into a predetermined shape by pressing a braided material comprising the braided packing material described in  claim 2 .  
     
     
         7 . A gland packing made into a predetermined shape by pressing a braided material comprising the braided packing material described in  claim 3 .  
     
     
         8 . A gland packing made into a predetermined shape by pressing a braided material comprising the braided packing material described in  claim 4.