Shoe sole member and shoe

Abstract

Provided is a shoe sole member that is partially or entirely formed from a resin foam product constituted by integrating of resin foam particles, wherein the resin foam particles are composed of a resin composition containing a polyamide elastomer, and the resin foam product satisfies all formulas ( 1 ) to ( 4 ) below, when a loss factor at −20° C. tan δ [−20° C.], a loss factor at 25° C. is tan δ [25° C.], a storage elastic modulus at 25° C. of the resin composition is E′ [25° C.], the minimum value of a complex viscosity at 100° C. to 130° C. of the resin composition is ηmin, and the maximum value thereof is ηmax, in a dynamic viscoelasticity measurement: 1≤tan δ [−20° C.]/tan δ [25° C.]≤5 . . .  (1); 50 MPa≤E′ [25° C.]≤400 MPa . . .  (2); 0.05 MPa·s≤ηmin . . .  (3); and ηmax≤0.6 MPa·s . . .  (4).

1 . A shoe sole member that is partially or entirely formed from a resin foam product constituted by integrating a plurality of resin foam particles, wherein
 the plurality of resin foam particles consist of a resin composition containing a polyamide elastomer,   the resin foam product satisfies all formulas (1) to (4) below, when a loss factor at −20° C. is referred to as tan δ [−20° C.], a loss factor at 25° C. is referred to as tan δ [25° C.], a storage elastic modulus at 25° C. of the resin composition is referred to as E′ [25° C.], the minimum value of a complex viscosity at 100° C. to 130° C. of the resin composition is referred to as ηmin, and the maximum value thereof is referred to as ηmax, in a dynamic viscoelasticity measurement:
   1≤tan δ [−20° C.]/tan δ [25° C.]≤5 . . .   (1);
 
   50 MPa≤E′ [25° C.]≤400 MPa . . .   (2);
 
   0.05 MPa·s≤ηmin . . .   (3); and
 
   ηmax≤0.6 MPa·s . . .   (4).
 
   
     
     
         2 . The shoe sole member according to  claim 1 , wherein
 an expansion ratio of the resin composition is 3.0or more,   
     
     
         3 . A shoe comprising:
 a shoe sole member that is partially or entirely formed from a resin foam product constituted by integrating a plurality of resin foam particles, wherein   the plurality of resin foam particles consist of a resin composition containing a polyamide elastomer, and   the resin foam product satisfies all formulas (1) to (4) below, when a loss factor at −20° C. is referred to as tan δ [−20° C.], a loss factor at 25° C. is referred to as tan δ [25° C.], a storage elastic modulus at 25° C. of the resin composition is referred to as E′ [25° C.], the minimum value of a complex viscosity at 100° C. to 130° C. of the resin composition is referred to as ηmin, and the maximum value thereof is referred to as ηmax, in a dynamic viscoelasticity measurement:
   1≤tan δ [−20° C.]/tan δ [25° C.]≤5 . . .   (1);
 
   50 MPa≤E′ [25° C.]≤400 MPa . . .   (2);
 
   0.05 MPa·s≤ηmin . . .   (3); and
 
   ηmax≤0.6 MPa·s . . .   (4).
 
   
     
     
         4 . The shoe according to  claim 3 , wherein
 an expansion ratio of the resin composition is 3.0 or more.