| http://www.w3.org/ns/prov#value | - Heated TPU flows through or around holes or other structures and hardens, creating integrated fasteners.The co-molding of rigid polymers to relatively softer polymers is also taught in U.S. Pat. Nos. 5,786,057, 5,843,268, 6,719,381, and 7,132,167, which are hereby incorporated by reference in their entireties, particularly with respect to materials combinations disclosed and molding techniques dis
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