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Blow Molded PVC Bottle Failure

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You are here: Home / Plastic Failure Analysis & Testing / Blow Molded PVC Bottle Failure

May 17, 2016

Before using a bottle to contain a chemical solution, chemical compatibility testing should be performed to ensure that the chemicals are compatible with the bottle material. As an example, we recently were asked to determine why a blow-molded PVC bottle ruptured allowing gelled ethanol to spray onto a child. Ethanol is only marginally compatible with PVC. Residual stresses in the material from the blow molding process in combination with a large wall thickness variation in the bottle wall led to the bottle failure. Finite element analysis predicted the location of the failure.

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