SPORTS SHOE COMPRISING STUDS OR STUD RECEIVERS
The invention relates to studded shoes which comprise metal studs and a plastics sole. Studs and sole are connected to one another by a coating of an adhesion promoter composition, wherein the composition comprises at least one copolyamide-based hot-melt adhesive. The studded shoe can be used in the sports sector or hiking sector.
1 : A sports shoe comprising:
studs or stud receivers,
a plastic sole, and
an adhesion promoter composition that comprises at least one copolyamide-based hot-melt adhesive;
wherein the studs and, respectively, stud receivers and plastic sole are connected to one another at least by a coating of the adhesion promoter composition.
2 : The sports shoe according to claim 1 , wherein the copolyamide comprises additions of at least one epoxy component and of at least one blocked polyisocyanate, as other constituents of the hot-melt adhesive.
3 : The sports shoe according to claim 1 , that comprises studs, wherein the longitudinal direction of the studs is perpendicular, almost perpendicular, or at an angle, to the plane of the sole.
4 : The sports shoe according to claim 1 , that comprises studs comprising at least one material selected from the group consisting of metal and plastic.
5 : The sports shoe according to claim 1 , wherein the plastic sole is applied by an injection-moulding process, by thermoforming, or by hot pressing onto the stud material.
6 : A plastic shoe sole comprising:
a plastic sole,
studs or stud receivers, and
an adhesion promoter composition that comprises at least one copolyamide-based hot-melt adhesive;
wherein the studs and, respectively, stud receivers, and the plastic sole are connected to one another at least by a coating of the adhesion promoter composition.
7 : A process for producing a sports shoe, according to claim 1 , wherein the adhesion promoter composition is applied at least to some extent to the surface of the sole and the sole is then connected to the stud material.
8 : A process for producing a sports shoe according to claim 1 , wherein the adhesion promoter composition is applied at least to some extent to the surface of the stud material and the stud material is then connected to the plastic that forms the sole.
9 : The process according to claim 8 , wherein the adhesion promoter composition is cured thermally.
10 : The process according to claim 8 , wherein the plastic sole is applied by an injection-moulding process, by thermoforming, or by hot pressing onto the stud material.
11 : A sports shoe according to claim 1 comprising studs or stud receivers, wherein said sports shoe is a hiking or climbing shoe, or a football, rugby, American football, golf, baseball, ultimate, cycling, skiing or athletics shoe.
12 : The sports shoe according to claim 11 wherein said shoe is suitable for use on natural or synthetic turf, cinders, or a synthetic track.
13 : The shoe according to claim 1 , wherein said shoe is lighter in weight than an otherwise identical shoe in which the studs or stud receivers and plastic sole are frictionally-interlocked and not coherently-bonded to one another by a coating of said hot-melt adhesion promoter composition.
14 : The sports shoe according to claim 1 , wherein said shoe provides a higher sole-substrate force transmission than an otherwise identical shoe in which the studs or stud receivers and plastic sole are frictionally-interlocked and not coherently-bonded to one another by a coating of said hot-melt adhesion promoter composition.