OUTSOLE FORMED FROM SHEET MOLDING COMPOUND
A construct for a hockey skate outsole formed from layers of sheet molding compound material. The sheet molding compound material may be manufactured to have shorter average fiber lengths with random orientation in order to enhance the mechanical properties of the formed hockey skate outsole.
1 . An outsole structure comprising:
a sole plate formed from a sheet molding compound material, further comprising:
a forefoot structure integrally molded to the sole plate, comprising at least one forefoot aperture that is defined by a contour of the forefoot structure and extends over a majority of the forefoot structure, the at least one forefoot aperture being divided by at least one forefoot support rib;
a midsole structure integrally molded to the sole plate, the midsole structure comprising at least one midsole support rib that is integrally molded to the sole plate and transverses a recessed portion of the sole plate;
a heel structure integrally molded to the sole plate, the heel structure comprising at least one heel aperture that extends over a majority of the heel structure and is divided by at least one heel support rib having a first end integrally molded to the heel structure distal to the midsole structure and a second end integrally molded to the heel structure proximal to the midsole structure; and
at least one support wing structure integrally molded to and extending upwards from the sole plate.
2 . The outsole structure of claim 1 , wherein the sole plate is molded from one preform layer of sheet molding compound material, the one preform layer comprising a flexible sheet of solidified resin paste impregnated with randomly oriented fiber strands.
3 . The outsole structure of claim 2 , wherein the fiber strands measure at least 10 mm in length.
4 . The outsole structure of claim 3 , wherein the fiber strands measure at least 25.4 mm in length.
5 . The outsole structure of claim 2 , wherein the fiber strands comprise carbon fibers.
6 . The outsole structure of claim 2 , wherein the fiber strands comprise glass fibers.
7 . The outsole structure of claim 1 , wherein the sole plate is molded from at least a first and a second preform layer of sheet molding compound material, the first preform layer comprising a flexible sheet of solidified resin paste impregnated with randomly oriented fiber strands having a first average length and the second preform layer comprising a flexible sheet of solidified resin paste impregnated with randomly oriented fiber strands having a second average length longer than the first.
8 . The outsole structure of claim 7 , wherein the first average length is less than 10 mm and the second average length is greater than 20 mm.
9 . A method of fabrication comprising:
forming a sheet molding compound material by introducing randomly oriented fiber strands in between layers of resin paste and solidifying a resultant composite into a flexible sheet;
cutting the sheet molding compound material into at least one preform layer;
positioning the at least one preform layer in a mold;
heating and cooling the mold; and
removing an outsole structure from the mold.
10 . An outsole structure formed according to the method of claim 9 , further comprising:
a sole plate further comprising:
a forefoot structure integrally molded to the sole plate, the forefoot structure comprising at least one forefoot aperture that is defined by the contour of the forefoot structure and extends across at least a majority of the forefoot structure;
a midsole structure integrally molded to the sole plate, the midsole structure comprising a recessed midsole portion; and
a heel structure integrally molded to the sole plate, the heel structure comprising at least one heel aperture that is defined by the contour of the heel structure and extends across at least a majority of the heel structure.
11 . An outsole structure according to claim 10 , wherein the sole plate further comprises at least one support wing structure integrally connected to and extending upwards from the sole plate.
12 . The method of claim 9 , wherein the fiber strands measure at least 10 mm in length.
13 . The method of claim 12 , wherein the fibers strands measure at least 25.4 mm in length.
14 . The method of claim 9 , wherein the fiber strands comprise carbon fibers.
15 . The method of claim 9 , wherein the fiber strands comprise glass fibers.
16 . A method of fabricating an outsole structure, comprising the steps of:
forming a first sheet molding compound material by introducing randomly oriented fiber strands having a first average length in between layers of resin paste and solidifying a resultant composite into a first flexible sheet;
forming a second sheet molding compound material by introducing randomly oriented fiber strands having a second average length, longer than the first average length, in between layers of resin paste and solidifying a resultant composite into a second flexible sheet;
cutting the first flexible sheet into a first preform layer;
cutting the second flexible sheet into a second preform layer;
positioning the first and second preform layers in a mold;
heating and cooling the mold; and
removing an outsole structure from the mold.
17 . The method of claim 16 , further comprising:
positioning a foam core between a selected two of the preform layers of the sheet molding compound material in the mold to be integrally molded within the outsole structure.
18 . The method of claim 16 , wherein the second preform layers are positioned at areas of the outsole structure intended to exhibit comparatively higher mechanical toughness.
19 . An outsole structure formed according to the method of claim 16 , further comprising:
a sole plate, further comprising:
a forefoot structure integrally molded to the sole plate comprising at least one forefoot aperture that is defined by the contour of the forefoot structure and extends over at least a majority of the forefoot structure;
a midsole structure integrally molded to the sole plate, the midsole structure comprising a recessed midsole portion; and
a heel structure integrally molded to the sole plate, the heel structure comprising a heel aperture that is defined by the contour of the heel structure and extends across at least a majority of the heel structure;
20 . An outsole structure according to claim 19 , wherein the sole plate further comprises at least one support wing structure integrally molded to and extending upwards from the sole plate on a first side of the sole plate at the midsole region.
21 . An outsole structure comprising:
a sole plate formed from a sheet molding compound material, further comprising:
a first side, a second side, a forefoot region, a midsole region, and a heel region; and
a first support wing integrally connected to and extending upwards from the sole plate.
22 . The outsole structure according to claim 21 , wherein the first support wing is integrally connected to and extends upwards from the first side of the sole plate, the sole plate further comprising a second support wing integrally connected to and extending upwards from the second side of the sole plate.
23 . The outsole structure according to claim 22 , wherein the first and second support wings are integrally connected to and extend upwards from the sole plate at the heel region.
24 . The outsole structure according to claim 22 , wherein the first and second support wings are integrally connected to and extend upwards from the sole plate at the midsole region.
25 . The outsole structure according to claim 22 , wherein the first and second support wings are integrally connected to and extend upwards from the sole plate at the forefoot region.
26 . The outsole structure according to claim 21 , wherein the first support wing is formed from a sheet molding compound material.
27 . The outsole structure according to claim 21 , wherein the sole plate further comprises a reinforced structure integrally molded to the sole plate.