Patent Number: 6,254,816

Title: Process and apparatus for the manufacture of composite fibrous strand comprising glass fibers

Abstract: A process and apparatus are provided for the manufacture of a composite fibrous strand including glass fibers. Glass fibers and an additive fibrous material (e.g., thermoplastic polymeric fibers) are each introduced separately into a substantially rotationally symmetric zone that is closed circumferentially except for a longitudinal introduction locale. The glass fibers and the fibers of the additive fibrous material are subjected to a vortex to form a homogeneous composite fibrous strand. Good admixture of the fibrous components is made possible thereby facilitating the ultimate production of composite articles wherein the glass fibers are disposed as reinforcement in a highly uniform manner. Such homogeneity and uniformity provides improved mechanical properties to the end user.

Inventors: Klaus; Michaela (Hasloch, DE), Dosch; Reinhart (Wertheim, DE), Mann; Hans Georg (Krenzwertheim, DE)

Assignee: Schuller GmbH

International Classification: D01G 13/00 (20060101); D02G 3/02 (20060101); D02G 3/18 (20060101); C03B 037/01 (); D01F 008/04 (); D01F 008/18 ()

Expiration Date: 07/03/2018