mythos
mythos
Short technical writing on the materials, foams, adhesives, and processes behind footwear, drawn from real problems and how they get solved.
Foam quality can't be judged by density or softness alone. A testing guide to cell structure, density distribution, surface defects, mechanical validation, and the process stability that ties them together.
read article →Neither process is universally better. How compression and injection molding differ for thermoset rubber outsoles across tooling, compound behavior, geometry, and throughput, and how to choose.
read article →Standard injection, injection with compression molding, and co-shot with vacuum compression each control foaming and part formation differently. How the three EVA architectures compare, and where each fits.
read article →Nitrogen dominates commercial SCF injection for a reason. A look at how N₂ and CO₂ behave differently in the polymer melt, what mixed-gas systems promise, and a practical guide to choosing between them.
read article →There is no single best material for SCF injection. A practical comparison of TPU, aTPU, TPEE, SEBS, PEBA, and EVA, what each does well, where each struggles, and how to choose.
read article →Both processes use supercritical nitrogen to foam footwear midsoles, but they differ fundamentally in gas diffusion, pressure control, and how the final part is formed. A look at what separates batch autoclave saturation from in-cavity injection foaming, and where each fits.
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