ARTICLE WITH PROTECTIVE SHEATH

摘要

Protective sheaths particularly for fiber reinforced articles comprising a combination of polymeric and metallic material layers, are disclosed. The protective sheaths comprise alternating layers of high and low ductility and are particularly suited for sports articles, such as hockey sticks, lacrosse sticks, baseball/softball bats and golf clubs.

主权项

1. A hockey stick comprising:
a shaft portion comprising fiber reinforced composite materials, said shaft portion including a grip end and a proximal end, and a blade portion connected to the proximal end of the shaft portion; and a protective sheath covering at least the proximal end of the shaft portion; said protective sheath representing <50% of the total overall weight of said hockey stick; said protective sheath being composed of a multi-layer structure comprising at least two layers in a depth direction of said protective sheath, each having a thickness between 0.25 and 150 μm; said multi-layer structure comprising a polymer layer having an elongation to failure of >10% in intimate contact with the fiber reinforced composite material of the shaft portion followed by at least one metallic layer having an elongation to failure of ≦10%.