Process and apparatus for spinning polymer filaments permits the obtaining of skin-core filament structure by feeding a polymer composition to a spinnerette at a flow rate sufficient to obtain a spinning speed of about 10 to 200 meters per minute through the spinnerette; heating the polymer composition...http://www.google.es/patents/US6116883?utm_source=gb-gplus-sharePatente US6116883 - Melt spin system for producing skin-core high thermal bond strength fibers
Melt spin system for producing skin-core high thermal bond strength fibers
