Co-molded 3D elements
Describes are support elements for a sole of a shoe, in particular a sports shoe, a sole and a shoe with such a support element, as well as a method for the manufacture of a support element. As examples, the support element includes a first partial member formed of a first material, and a second partial member formed of a second material. The first partial member is mechanically joined to the second partial member in a connection region, wherein the connection region is configured to allow the first partial member to rotate or slide relative to the second partial member. The first partial member, the second partial member, and the connection region can be co-molded and joined together in a single fabricating step.
1. A sole comprising:
a cushioning element in the form of a midsole, wherein the midsole comprises randomly arranged particles of an expanded material;
a support element at least partially enclosed by the midsole, wherein the support element comprises
a first partial member formed of a first material; and
two second partial members each formed of a second material;
wherein the first material is different from the second material;
wherein the first partial member is integrally formed with the second partial members in two connection regions, wherein the connection regions are configured to allow the first partial member to rotate or slide relative to the second partial members,
wherein the first partial member and the second partial members contact each other in the connection regions.
2. The sole according to claim 1 , wherein the first material and the second material do not form a chemical bond in the connective regions.
3. The sole according to claim 1 , wherein the first material has a melting temperature that is higher than a melting temperature of the second material.
4. The sole according to claim 1 , wherein the first material and the second material are plastic materials, wherein the plastic materials are chosen such that the connection region does not comprise a chemical bond between the two plastic materials.
5. The sole according to claim 4 , wherein the plastic materials do not form the chemical bond due to an additive contained in at least one of the two plastic materials.
6. The sole according to claim 4 , wherein the first material comprises one or more of the following materials: polyamide and polytetrafluoroethylene.
7. The sole according to claim 6 , wherein the polyamide is polyamide-6.6.
8. The sole according to claim 4 , wherein the second material comprises one or more of the following materials: polyamide, polyoxymethylene, and polytetrafluoroethylene.
9. The sole according to claim 8 , wherein the polyamide is polyamide-12.
10. The sole according to claim 1 , wherein the connection regions comprise at least one locking direction, wherein a movement of the first partial member relative to the second partial members in the at least one locking direction is more strongly restricted than in another direction.
11. The sole according to claim 1 , wherein at least one of the two connection regions is a ball joint.
12. The sole according to claim 1 , wherein at least one of the two connection regions is a piston arranged inside a cylinder.
13. The sole according to claim 1 , wherein at least one of the connection regions is configured so that a movement of the first partial member relative to at least one of the second partial members creates a pumping action.
14. The sole according to claim 13 , wherein the support element is positioned within the midsole such that the movement of the first partial member relative to the second partial members is created by a wearer treading on the sole.
15. The sole according to claim 1 , wherein at least one of the first partial member and the second partial members is a planar member.
16. The sole according to claim 1 , wherein at least one of the first partial member and the second partial members comprises a rod-shaped section, wherein the rod-shaped section is inserted into a cylinder in at least one of the connection regions.
17. The sole according to claim 1 , wherein the particles of the expanded material are selected from a group consisting of expanded thermoplastic polyurethane particles and expanded polyether-block-amide particles.
18. A shoe comprising the sole of claim 1 .