It has been found that having a first polymer in a first layer and a second polymer in a second layer aids in the ability to use lower temperature, pressure, and {HEAD ~ dwell time consolidation conditions} with {TAIL ~ the same or better properties} as compared to a fiber having only the first polymer in one layer 
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It has been found that having a first polymer in a first layer and a second polymer in a second layer aids in the ability to use lower temperature , pressure , and { HEAD ~ dwell time consolidation conditions } with { TAIL ~ the same or better properties } as compared to a fiber having only the first polymer in one layer
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