Vocabulary
Antenna profile: The framework structure for antennas of wireless data networks, inside which the actual antenna will be placed. The profile protects the antenna from the weather, acts as the framework for the antenna and allows free radio wave propagation.
Composite: A general term for all combinations of two or several materials in which they act together without dissolving or blending with each other. Plastic composites are one of the key sub-groups of composites. Composites consisting of strong fibres and plastic substances are called (glassfibre) reinforced plastic, which is an extremely lightweight and particularly strong material. Composite is used in structures requiring high strength and lightness, typical examples including aircraft and boat structures. Composites are highly durable in sunlight, ultraviolet radiation and temperature variations, and they are very impact resistant and tolerate mechanical wear well. In addition, composite is recyclable.
Doctor blade: Product used in the control of paper web and maintenance of paper machine rolls.
Composite profile: A composite product structure produced with the pultrusion method, custom-made for each customer.
DST doctor blade holder: Holder for doctor blades used in paper machine roll maintenance, allowing adjustment of doctoring pressure. In comparison with metallic holders, composite holders have the advantage of greater capability in profiling, entailing that the composite doctor blade conforms to the roll surface with much higher precision.
ECRC (European Composite Recycling Services Company): A company which aims at developing new applications to utilize composite waste and influencing European legislation as a part of the European composite industry.
Fabric guiding pole: A pole used upon changing and placing the fabric of a paper machine.
Filament winding: Filament winding consists of winding resin impregnated fibers or rovings of glass aramid, or carbon on a rotating mandrel in predetermined patterns. The method provides the greatest control over fiber placement and uniformity of structure. After the layers are wound, the component is cured and removed from the mandrel.
Glide Path Tower: Part of the Instrument Landing System wiht which aircrafts can be guided for landing during poor visibility.
Hand lay-up: Hand lay-up is the simplest and oldest open molding method of the composite fabrication processes. It is a low volume, labor intensive method suited especially for large components. Glass or other reinforcing mat or woven fabric or roving is positioned manually in the open mold, and resin is poured, brushed or sprayed over and into the glass plies. Curing is initiated by a catalyst in the resin system, which hardens the fiber reinforced resincomposite without external heat. For a high quality part surface, a pigmented gel coat is first applied.
Pull-Winding: A continuously working production method developed by Exel, combining the pultrusion and continuous winding methods.
Pultruder: A company manufacturing products with pultrusion technology.
Pultrusion: The pultrusion process is a proven continuous manufacturing method for obtaining high quality composite profiles with consistently repeatable mechanical properties. Pultruded products are essentially composed of high performance fibers (glass, carbon, or aramid) individually or in combination, embedded in a polymer matrix (polyester, vinylester, epoxy or phenolic).
The pultrusion process starts by pulling/drawing continuous reinforcements through a resin impregnation system. The coated fibers are passed through preforming guides to align reinforcement and preform the part to the desired shape before entering the heated die. The fully cured section can be cut to length downstream of the pulling mechanism by a circular saw or, if size and shape permit, be wound onto a drum as a continuous length. The only limitations on length for cut sections are storage and transportation.
Responsible Care: The chemical industry's self-initiated worldwide environmental and safety programme.
Select niche market: a narrow market segment; specialisation in carefully selected narrow special areas where the aim is to become market leader.
Spray-up: Spray-up is an open mold process involving simultaneous deposition of chopped fiber and resin in a cavity mold or mandrel to build an intimately mixed layer of the two.
