Reinforced reaction injection moulding RRIM process

The reinforced reaction injection moulding (RRIM) process is a development of RIM in which reinforcing fillers such as glass fibres are incorporated into the polymer. One advantage of such a system is to reduce the coefficient of thermal expansion, and with a 40-50% glass fibre content the coefficient is brought into line with those of metals. 

Reinforced reaction injection moulding (RRIM) is an extension of RIM. Materials for RIM and RRIM are very similar, but the moulding processes are substantially dissimilar because of the differences in viscosity and... 

The following is a preliminary report on reinforced reaction injection moulding (RRIM), The process is in a state of rapid development and as yet there are no UK applications, although several companies are considering RRIM automotive parts. 

Redland Tiles Ltd, 65 Reinforced reaction injection moulding (RRIM), 127-32 advantages, 131 development, 129 limitations, 132 process, 130... 

RRIM polyurethanes are an extension to Reaction Injection Moulding (RIM) which is a relatively recent, but now established, plastics processing technique. Simplified, RRIM is the inclusion of a reinforcement - short glass fibres - into one of the components used in the RIM process. However, the inclusion of glass reinforcement into one of the reactive components, usually the polyol, has meant that certain processing equipment modifications were necessary in order to handle the... 

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