Patent ID: 11873376
Assignee: TORAY INDUSTRIES, INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC B  C | IPC B  C

Claim 1:
2. The fiber-reinforced resin material according to claim 1, wherein the product of the porosity Pf (−) within the fiber bundle A represented by equation (4) and the thickness tf (mm) of the fiber bundle A is 0 mm or more and 0.03 mm or less:, P
      f
     
     =
     
      
       
        p
        2
       
       
        
         v
         
          f
          ⁢
          2
         
        
        +
        
         v
         
          m
          ⁢
          2
         
        
        +
        
         p
         2
        
       
      
      .
     
    
   
   
    
     (
     4
     )