| 摘要 |
<p>The present invention provides a process and apparatus which increase the wetting of the fibers with molten thermoplastic polymer by advancing fibers in a counter-current manner through the molten polymer. Shear forces thus induced in the polymer decrease the viscosity of molten thermoplastic polymer, thereby increasing the wetting potential. In accordance with the invention, continuous filament fiber material is advanced through an impregnation chamber filled with polymer material. The fiber is advanced in one direction while a flow of heated thermoplastic material is directed through the impregnation chamber in a direction oppposite to the advancing fiber. The thermoplastic material impregnated fiber is then directed from the impregnation chamber.</p> |
