Pioneering the world's safest trampolines

Injury rates of children on the traditional backyard trampoline highlighted a serious design flaw in the steel spring component

The idea to replace traditional steel springs with pultruded composite rods to create a safer trampoline was the brainchild of Canterbury professor and inventor, Professor Keith Alexander.

Injury rates of children on the traditional backyard trampoline highlighted a serious design flaw in the traditional trampoline. Although brilliant at getting trampoliners up into the air, the journey down was fraught with risk either by landing on the steel springs or falling through the holes between the springs. As Professor Alexander stated: “There must be nothing there for a kid to bang into and hurt themselves because kids are going to be kids and do their craziest.”

Custom GFRP rods a critical part of the puzzle

In collaboration with our client, we developed high performance rods to be used in a revolutionary trampoline for the ultimate safety and performance. These rods met the following criteria:

High creep resistance

High fatigue resistance

Complex finishing.

A modified proprietary resin was formulated with key performance criteria met, ensuring a 5x safety factor. Tight quality control parameters and bespoke testing methods were developed to meet stringent standards for safety.

As with all our innovations, using GFRP pultrusion also had the added benefit of providing a system that is corrosion-free and durable. The days of kids playing on an old rusted trampoline in the backyard are well in the past. The new design is highly durable, even in the most extreme weather conditions. 

A reputation built on safety

Safety enhancements to the trampolines led to renewed confidence in supplying the highly litigious North American recreation market. The new design can withstand 10,000,000 bounces (fatigue) over 15 years under extremely high loading and creep stress fatigue conditions.

Further composite improvements

Design developments for the customer are ongoing. This not only provides the customer with an extra competitive edge but increase manufacturing efficiencies and quality. Improvements include:

  • purpose-built testing methods
  • customized finishing technology
  • a program to double the fatigue resistance.