Industry Glossary - L

Composite material system made with layers of fiber reinforcement in a resin. Sometimes used as a general reference for composites, regardless of how made.

Primarily means a composite material system made with layers of fiber reinforcement in a resin. Sometimes used as a general reference for composites, regardless of how made. Examples of usage: laminate consumption by market, compression-molded laminate.

Act of building up successive layers of polymer and reinforcement. Layers of catalyzed resin and fiberglass or other reinforcements are applied to a mold in order to make a part. The reinforcing material placed in position in the mold. The process of placing the reinforcing material in position in the mold. The resin-impregnated reinforcement.

A characteristic of the bed of chopped glass fibers which relates to the degree of uniformity in thickness that the bed exhibits across the width of the chopped pattern.

The horizontal plane of doffs on a pallet. A pallet usually has four layers of twelve doffs each. (Also ).

A newer thermoplastic polymer that is melt process able and develops high orientation in molding, with resultant tensile strength and high-temperature capability.

A curve in which the increasing tension, compression, of flexural load are plotted on the ordinate axis and the deflections caused by those loads are plotted on an abscissa axis.

A mechanical device that interlaces fibers at right angles with varying degrees of weave construction (weight, thickness and design). More modern looms are air jet but rapier and more traditional shuttle equipment is still in use.

A large, flanged cylinder onto which all warp yarns are wound and from which yarns enter the loom.

Small open place in the strands due to the excessive length of one or more strands.

Weight loss, usually expressed as percent of total, after burning off an organic sizing from glass fibers, or an organic resin from a glass fiber laminate.

Laminated, molded, and cured using pressures from 400 psi down to and including the pressure obtained by mere contact of the plies.

A material added to most sizing to improve the handling and processing properties of textile strands.