Trade name for a process of mixing polymers that employs a specially designed head that is fitted to an extrusion output. Head is comprised of a cylinder and loose-fitting rotating core which is attached to the screw. Mated surfaces have several hollows which are hemispherical and whereby the melt is turned frequently , being completely mixed with pigments or other substances. See extrusion.

CAVITY TRANSFER MIXING: "The polymer was created by use of cavity transfer mixing."

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