The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 1992
Filed:
Oct. 05, 1990
Douglas A Pilling, San Pedro, CA (US);
George Korzeniowski, Sherman Oaks, CA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
A method for making substantially continuous, fiber-reinforced resin stock without drawing the fibers through a separate resin bath comprises: providing a plurality of fiber layers and resin film layers for positioning into an array having fiber layers for its outermost layers. This array is passed, preferably pulled, through a die having an entrance, an exit downstream from the entrance, and a pool area adjacent the die entrance, said pool area having a larger cross-sectional configuration than that of the array. Upon heating of the die, the resin film layers of the array melt to form a pool of molten resin in the pool area of the die. The fiber layers passing through the die are impregnated with resin from the pool area before the resin-impregnated fibers are optionally shaped, then compressed and solidified to form resin stock. A pultrusion die for making substantially continuous, fiber-reinforced stock from a low viscosity thermoplastic resin is also disclosed.