Owens Corning Fiberglas Technology, Inc.

Ocv Intellectual Capital, LLC

Michael A Strait

Leonard Joseph Adzima

Homer G Hill

Robert A Schweizer

Stephen Seng

William G Hager

Michael Blaise Fazio

A powder coated roving material for making structural parts is provided. The powder coated roving includes a bundle of fibers at least substantially coated with a powder coating material. The bundle is formed of a plurality of inner fibers and a plurality of outer fibers surrounding the inner fibers. The size composition maintains the fibers in a bundled orientation during processing and releases the fibers during molding. The size composition includes an epoxy resin emulsion containing at least one surfactant and a solid epoxy resin having an epoxy equivalent weight from about 450 to about 950, at least one epoxy silane coupling agent, at least one non-ionic lubricant, at least one cationic lubricant, and at least one organic acid. In addition, the size composition may have an acetone solubility from about 30% to about 75%. A method of making a composite roving is also provided.

Powder coated roving for making structural composites

A strand forming and chopping apparatus includes a bushing for forming a continuous strand, a size applicator for applying a size to the strand, a chopping device for chopping the strand into individual segments and a thread-up apparatus for directing the strand into the chopping device. The thread-up apparatus includes a cot incorporating a cot shoe and a strand guide displaceable between a rest position and a thread-up position where the strand guide holds the strand in a feed position from which the strand is engaged by the cot shoe and delivered to the chopping device.

Automatic threading device

A polymer composite multiend roving material used to make structural composite parts includes a bundle of fibers held together by a high integrity sizing composition and surrounded by a powder coating polymer material. The powder coating material is approximately 10-80% of the dry weight of the multiend composite roving weight. The multiend composite roving material may then be easily processed further to form a molded composite part having good mechanical properties and high fiber content.

Powder coated roving for making structural composite

A process and apparatus for making densified glass fiber pellets substantially encapsulated in a polymeric shell from chopped segments of multi-filament glass strand is described. The densified pellets may be advantageously produced by hydrating chopped glass strands and then pelletizing them by tumbling in a rotary drum, densifying the resulting pellets by tumbling in a rotating zig-zag or undulating tube, drying the pellets and encapsulating them in a polymeric composition. The resulting pellets exhibit enhanced degradation resistance during bulk storage and handling.

System for preparing polymer encapsulated glass fiber pellets

A system for making densified glass fiber pellets from chopped segments of multi-filament glass strand is described. The densified pellets may be advantageously produced by hydrating chopped glass strands and then pelletizing them by tumbling in a rotary drum, and densifying the resulting pellets by tumbling in a rotating zig-zag or undulating tube for a period of time sufficient to increase their density but insufficient to degrade the fibers to a point where composite articles formed from such pellets have lower tensile or impact strengths than comparable composite articles formed from unpelletized strand segments.

Growing community of inventors

Johnstown, OH, United States of America

Michael A Strait