Remoldable impact-attenuation article
Aspects herein provide for a remoldable article configured to attenuate or reduce the results of an impact. The article comprises a plate that is remoldable in a temperature range of about 41 degrees Celsius to about 43.3 degrees Celsius.
1. An article of apparel comprising:
a first layer of one or more materials, the first layer of the one or more materials including a first surface, a second surface, and a first-layer thickness extending between the first surface and the second surface, the first layer of the one or more materials including a plurality of sub-layers, the plurality of sub-layers including (i) one or more foam layers comprising a first foam layer and a second foam layer and (ii) one or more mesh-textile layers comprising a first mesh-textile layer and a mesh substrate layer, wherein:
the first foam layer has a thickness in a range of 5 mm to 7 mm, the first foam layer comprising only a composite of rubber and low-density polyethylene,
the second foam layer has a thickness in a range of 4 mm to 6 mm, the second foam layer comprising a polyethylene foam, and
the first mesh-textile layer has a thickness in a range of about 4 mm to 6 mm; and
a plate coupled to the second surface of the first layer of the one or more materials, the plate comprising a thermoplastic polymer having a tensile property that changes by an amount in a range of 10% to 50% when a temperature of the thermoplastic polymer is elevated from a first temperature to a second temperature, the first temperature being in a first range that is 60 degrees Fahrenheit to 90 degrees Fahrenheit, the second temperature being in a second range that is 106 degrees Fahrenheit to 110 degrees Fahrenheit, wherein the mesh substrate layer is located between the one or more foam layers and the plate, and wherein, the first foam layer is located directly adjacent the second foam layer and between the second foam layer and the plate, and wherein both of the first foam layer and the second foam layer are located between the mesh substrate layer and the first mesh-textile layer, and wherein the plate includes a network of walls that form a series of tubular cells that are hexagonal prisms in which opposing bases of each cell are open-ended.
2. The article of apparel of claim 1 , wherein the first foam layer is about 6.5 mm thick and the second foam layer is about 5 mm thick.
3. The article of apparel of claim 1 , wherein the one or more mesh-textile layers have a thickness of about 5 mm.
4. The article of apparel of claim 1 further comprising, an adhesive agent layered between the plate and the second surface of the first layer.
5. The article of apparel of claim 1 , wherein the tensile property includes a yield strength that is lower at the second temperature.
6. The article of apparel of claim 5 , wherein the tensile property includes a dynamic modulus that is lower at the second temperature.
7. The article of apparel of claim 1 , wherein the thermoplastic polymer has a vicat softening temperature in a range of 106 degrees Fahrenheit to 110 degrees Fahrenheit.
8. The article of apparel of claim 1 , wherein the plate further comprises one or more perimeter edges that form a boundary around a plate body, and wherein a coupling mechanism attaches the plate to the second surface of the first layer of the one or more materials at the one or more perimeter edges, the plate being detached from the second surface in a central region of the plate body.
9. The article of apparel of claim 1 , wherein the plate is comprised of a mixture of polyols, an isocyanate, a chain extender, and a catalyst.