Abstract
The causes of delamination in thin-walled ABS injection-mouldings were investigated by light and electron microscopy of thin sections. Delamination occurs at some depth below the moulded surface, and is due to a layered structure in which the rubber particles are segregated according to size, obliquely deformed, and grouped along the flow lines in rows. This structure is set up during moulding when a certain shear rate is exceeded.
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