Plastic springs bounce into action

A new line of compression springs made from a plastic composite material will combine the strength of metal with the special attributes of high-performance engineered thermoplastics, their manufacturer has claimed.

The company, Lee Springs, said that the plastic springs are called LeeP and will be available in a variety of standard sizes and six colour-coded strengths: red, orange, yellow, green, blue and violet, the strongest. It said it could also make LeeP springs to a customer’s performance requirements.

The plastic springs are made from a polyetherimide (PEI) resin developed by Sabic Innovative Plastics, the company added. It said that the advantages of PEI springs include physical and mechanical stability up to 170C (340F), high strength to weight ratios and excellent corrosion resistance. Additionally they are non-magnetic, offer dielectric insulation, low flammability and are recyclable, as well as being RoHS and REACH-compliant.

The company said that it expected the springs to find uses in a wide range of areas, including medical products and apparatus, imaging and X-ray equipment, and food processing and packaging machinery.

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