Johns Manville have released a premium direct roving product, StarRovLFTplus, for Long Fibre Thermoplastics (LFT) technology.
Johns Manville (JM) claim that LFT is a fast-growing application based on cost-efficient technology primarily focused on structural and semi-structural automotive parts. LFT utilises longer fibres than the conventional chopped strands commonly used in injection moulding compounds. Longer fibres translate to better mechanical performance in structural components such as front-ends, bumper beams, instrument panels or spare wheel pans, according to Johns Manville
Johns Manville state that the StarRov LFTplus roving features improved impregnation characteristics and excellent processability, along with LFT parts which have good dimensional stability and a coefficient of linear thermal expansion almost equal to steel. Coupled with its superior impact resistance and chemical stability (salt, oil, fuel), Johns Manville regard LFT as the ideal material for new cost effective applications in the global automotive markets.
The chemical sizings of StarRov LFTplus products have been developed to be compatible with PP, PA, PBT and other thermoplastics polymers. StarRov LFTplus has two key manufacturing concepts: Direct-LFT and the offline moulding process using LFT pellets.
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