Lee Enhances Plastic Composite Compression Springs

Leep plastic composite compression springs from Lee Spring now offer up to 30 per cent improved strength and durability for medical apparatus, X-ray, food processing and electronics applications. The range was developed in response to customer requests for springs that combine the strength of metal with the attributes of high-performance, engineered thermoplastics. Plastic composite springs are said to present a unique set of performance characteristics compared with metal springs.

Strength-to-weight ratios are considerably different while mechanical and thermal stability are maintained at temperatures up to 170C (340F). Corrosion resistance is excellent, they are non-magnetic, offer dielectric insulation, low flammability and are recyclable as well as RoHS and Reach compliant. Manufactured in Ultem PEI resin, different formulations can be used to meet or exceed performance criteria. PEI (polyetherimide) was selected as the material of construction following years of engineering design and materials research by Lee Spring's US technical team.

Ultem resin is produced by Sabic Innovative Plastics. Leep plastic composite compression springs are presented in six colour-coded strengths: red, orange, yellow, green, blue and violet - the strongest. Standard sizes and custom design options are available to meet performance requirements. Target application areas include medical products and apparatus, imaging and X-ray equipment, food processing and packaging machinery as well as applications in the aerospace, marine, electronics, electrical, water purification, chemical, automotive, semi-conductor, instrumentation and communications sectors.

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