Patent ID: 11970674
Assignee: KOLON INDUSTRIES, INC.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC C  D | IPC C  D

Claim 0:
1. A non-woven fabric for a dryer sheet, which is a blended long-fiber non-woven fabric comprising 70 wt % or more and 90 wt % or less of a first polyester filament having a melting point of 250° C. or higher and 10 wt % or more and 30 wt % or less of a second polyester filament having a melting point of 235° C. or lower,
wherein the first filament has a deformed cross section with a degree of deformity of 2.5 or more and 3.0 or less, and a fineness of 5 denier or more and 10 denier or less,
wherein the degree of deformity is calculated by Equation 1 below:, the
       ⁢
          
       degree
       ⁢
          
       of
       ⁢
          
       deformity
      
      =
      
       
        a
        ⁢
           
        diameter
        ⁢
           
        of
        ⁢
           
        circumscribed
        ⁢
           
        circle
       
       
        a
        ⁢
           
        diameter
        ⁢
           
        of
        ⁢
           
        inscribed
        ⁢
           
        circle
       
      
     
     ,
    
   
   
    
     [
     
      Equation
      ⁢
         
      1
     
     ]
    
   
  
 

wherein the non-woven fabric for a dryer sheet has 3 defects/m2 or less,
wherein the blended long-fiber non-woven fabric has a porosity of 88% or more and 95% or less and a s surface area of 0.10 m2/g or more sand 0.18 m2/g or less.