A modified pultrusion process

Muhammad Irfan, Nicholas Shotton-Gale, Mark Paget, Venkata Machavaram, Colin Leek, Shane Wootton, Mark Hudson, Stefan Helsmans, Francisco Daniel Nieves Bogonez, Surya Pandita, Gerard Fernando

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
641 Downloads (Pure)


This paper reports on a modified pultrusion process where the conventional resin bath was replaced with a custom-designed, enclosed resin-impregnation unit. A feature of this modified production process is that the rovings were spread, prior to impregnation, using a compact fibre spreading unit. The resin impregnator was designed to accommodate 60 rovings of 2400 tex E-glass. The design features enabled specified modes of impregnation to be enacted including, resin-injection, pin-impregnation, capillary impregnation and compaction. The impregnator was designed to accept pre-mixed resin from a pneumatically activated pressure-pot or a custom-designed resin delivery system. Pultrusion trials were conducted on a commercial machine using a conventional resin bath, the pressure-pot and the impregnation unit. The physical, mechanical and thermo-mechanical properties of the composites pultruded using the modified technique were marginally superior to those manufactured using the conventional resin bath. However, the environmental benefits of the modified pultrusion process were demonstrated to be significant.
Original languageEnglish
Pages (from-to)1925-1941
Number of pages17
JournalJournal of Composite Materials
Issue number13
Early online date10 Sept 2016
Publication statusPublished - 1 Jun 2017


  • Pultrusion
  • composites
  • impregnation
  • E-glass


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