ABC Certified Pedorthist (C-PED) Practice Exam

All of the following material types are heat moldable EXCEPT:

Polyurethane Foams EVA Foams Poron Latex Foams

Correct Answer:

Polyurethane Foams

Explanation:

Heat molding works when the material softens with heat and then hardens again to hold the new contour. Ethyl vinyl acetate (EVA) foams are a classic example of thermoplastic foams that soften easily and can be molded to the foot and then retain the shape as they cool. Poron foams, a type of polyurethane foam, are also designed to be softened with heat and shaped accordingly. Latex foams can be manipulated with heat under controlled conditions to achieve a molded contour as well. Traditional polyurethane foams used for cushioning, however, generally do not soften sufficiently with typical heat molding processes to take a new shape reliably, so they’re not considered heat moldable.

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