| http://www.w3.org/ns/prov#value | - Unlike prior art methods that use apparatuses such as pin tenters, ovens or calenders to retain, heat or pressurized composites, this inventive process advantageously relieves thermal stresses by heating a needlepunched multi-layer nonwoven composite as it is restrained between two smooth surfaces of an apparatus, which are positioned to apply uniform pressure under about 50 psi throughout the are
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