Rota Design Limited - total engineering solutions  
total engineering solutions . . . .

our company . . .

about common rotational moulding materials . . .

The majority of rotational moulding polymers are thermoplastic. Thermoplastic materials have the characteristic that they can undergo a continual cycle of heating to soften and cool to solidify just like candle wax. The added benefit is that these materials maybe recycled.
special colours and textures used for rotational moulding
Other materials have thermosetting characteristic such as cross linked polyethylene, once moulded these materials undergo an irreversible change. The primary requirements are that it should flow to coat the cavity evenly as the mould is rotated and secondly, its thermal characteristics should provide stability during the heating and cooling stages of the process.

The most commonly used material is polyethylene accounting for 80-90% of consumption depending upon who you talk to! LLDPE or linear low density polyethylene may be used for tanks, pots, containers, street furniture and playground equipment and most grades are available with a UV stabiliser additive.

The higher density HDPE provides additional rigidity and there is a cross-linking polyethylene which is suitable for low temperature applications, components requiring maximum toughness or higher weather resistance.

home page
about Rota Design
contact us
Worldwide

our skills and expertise . . .
engineering design
rotational moulding design
design verification and FEA
artistic modeling
support services

some explanations . . .
rotational moulding
finite element analysis
editorials and articles
patents

further information . . .
client log-in area
confidentiality
website use policies
our copyright
jobs at Rota Design
Rota Design Limited
 
© 2003 - 2014 - Rota Design Limited - all rights reserved - web design by Rotamania