US2019368124A1PendingUtilityA1

Sheet-like material

Assignee: TORAY INDUSTRIESPriority: Jan 23, 2017Filed: Dec 25, 2017Published: Dec 5, 2019
Est. expiryJan 23, 2037(~10.5 yrs left)· nominal 20-yr term from priority
D06N 3/14D06N 3/00D06N 3/0011D06N 3/004D06N 2213/045D06N 2211/28D06N 2205/246D06N 2203/068D06N 2201/10D06N 3/146D06N 3/0075D06N 3/0043D06N 3/0004
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Claims

Abstract

The present invention provide a sheet-like material having a highly soft texture, and further having high crease resistance while being soft. The sheet-like material of the present invention is a sheet-like material which includes a nonwoven fabric containing ultrafine fibers having an average single fiber diameter of 0.3 to 7 μm, and an elastomer, and having nap on a surface, in which the elastomer has a porous structure, and the porous structure has a proportion of micropores with a pore size of 0.1 to 20 μm of 60% or more in all pores.

Claims

exact text as granted — not AI-modified
1 . A sheet-like material comprising a nonwoven fabric containing ultrafine fibers having an average single fiber diameter of 0.3 to 7 μm, and an elastomer, and having nap on a surface, wherein the elastomer has a porous structure, and the porous structure has a proportion of micropores with a pore size of 0.1 to 20 μm of 60% or more in all pores. 
     
     
         2 . The sheet-like material according to  claim 1 , wherein the elastomer exists in an interior space in the nonwoven fabric. 
     
     
         3 . The sheet-like material according to  claim 1 , wherein the elastomer is a polycarbonate-based polyurethane resin. 
     
     
         4 . The sheet-like material according to  claim 3 , wherein the polyurethane resin has a weight-average molecular weight of 30,000 to 150,000. 
     
     
         5 . The sheet-like material according to  claim 2 , wherein the elastomer is a polycarbonate-based polyurethane resin 
     
     
         6 . The sheet-like material according to  claim 5 , wherein the polyurethane resin has a weight-average molecular weight of 30,000 to 150,000. 
     
     
         7 . The sheet-like material according to  claim 1 , wherein a number of pores per unit area in section is 50 pores/1600 μm 2  or more in the porous structure in the elastomer. 
     
     
         8 . The sheet-like material according to  claim 2 , wherein a number of pores per unit area in section is 50 pores/1600 μm 2  or more in the porous structure in the elastomer. 
     
     
         9 . The sheet-like material according to  claim 3 , wherein a number of pores per unit area in section is 50 pores/1600 μm 2  or more in the porous structure in the elastomer. 
     
     
         10 . The sheet-like material according to  claim 4 , wherein a number of pores per unit area in section is 50 pores/1600 μm 2  or more in the porous structure in the elastomer. 
     
     
         11 . The sheet-like material according to  claim 5 , wherein a number of pores per unit area in section is 50 pores/1600 μm 2  or more in the porous structure in the elastomer. 
     
     
         12 . The sheet-like material according to  claim 6 , wherein a number of pores per unit area in section is 50 pores/1600 μm 2  or more in the porous structure in the elastomer.

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