Material	UP - Unsaturated Polyester
	UP is thermosetting plastic material videly used as filler for glass fibre in sailing boats, hard tops for cars, furniture, etc. To start the hardening process an initiator (often an organic peroxide) must be added. In general UP is not resistant to solvents and bases. Apart from sulphuric acid, it resists acids. To improve appearance and resistance a surface layer (gel coat or paint) is often added. To work with UP expensive equipment or tooling are not required, and therefore UP is often used for prototypes and low-volume production.
Danish Name	UP - Umęttet polyester
Category	Plastics, Thermosetting
Products	Sailing boat Chair Hard top for car Printed circuit board Pedestrian bridge
Processes	Extrusion Manual fiber moulding
Similar materials	Epoxy
References	Lars Hallkvist ApS Jotun Danmark A/S (Norpol)
Price	Medium cost plastic (see also Plastics general overview)
Environmen- tal notes	Creation: Uncured UP may cause allergy and must not be in contact with the skin. Use: - Disposal: UP can be incinerated mainly producing H2O and CO2. Heating value is low. Reuse is only possible as filling material.
Photo	Thomas Nissen (Computer graphics)
Copyright	© 1996-2019 Torben Lenau This page is part of Design inSite Disclaimer