“BMT’s technology supports accurate top load and burst pressure testing, helping manufacturers optimise bottle designs for strength and lightweighting. By improving how performance is predicted during development, our methodology significantly reduces the need for physical prototyping and accelerates development timelines,” said David McKelvey, Head of Product at BMT.
Material characterisation: measuring how the resin behaves
Material characterisation shows how the resin behaves when it is heated, stretched and shaped, giving the simulation the accurate inputs it needs to predict how the bottle will form. This includes biaxial tensile testing, which measures how the material responds when stretched in two directions under controlled conditions. These tests capture deformation patterns, stretch ratios, stiffness changes and how processing history influences mechanical behaviour.
Simulation: predicting bottle behaviour with real material inputs
Simulation takes the measured material data and uses it to model the full bottle‑forming process. Instead of relying on constant wall thickness or uniform stiffness, BMT’s approach predicts how the material stretches in both the hoop and axial directions and how it distributes throughout the bottle during blowing. This produces a thickness and stiffness profile that reflects what is seen in physical bottles.
