Why choose Rainbow Ultrasonics?

We are a highly experienced and knowledgeable team with over 40 years of expertise in plastic welding technology. Throughout this time, we have supported a diverse range of customers – from early-stage production start-ups to manufacturers operating high-speed, high-volume 24/7 production environments.

Our capabilities span the entire product lifecycle. We provide the machines, tooling, technical skills, and ongoing support required to take your product from initial prototype through to fully automated, high-speed production – guiding and supporting you at every stage of the process. Working with customers worldwide, we are recognised for our responsive support, practical approach, and commitment to delivering innovative, reliable solutions tailored to individual manufacturing challenges.

In addition to supplying standard plastic welding equipment, we design and build special-purpose machinery and bespoke tooling to meet specific application requirements. Our in-house capabilities include weld trials, design development, tooling modifications, and early-stage prototype and welded part optimisation.

To help accelerate your route to market, we also offer small- to medium-scale production on-site — providing a flexible, efficient way to move your project forward quickly and with confidence.

Our Diverse Product Range

Explore the innovative plastic joining technologies we’ve implemented in various industries, from medical to military and consumer products.