Tooth-mixing-elements

The mixing elements of the previous patent are replaced in this one with single-flighted and toothed kneading discs. 

Collagen is a major structural element in connective tissues skin, tendons, muscle, and internal organs. It combines with inorganic compounds in bones and teeth. Cartilage is collagen mixed in an amorphous gel. Dentine, which makes up the bulk of a tooth, is a mixture of collagen and hydroxyapatite (a mineral), and water. 

Grillo et ol. [122] of Werner Pfleiderer described, in 1992, a Zahn Misch element (ZME) that consists of toothed elements (Figure 6.23b). This was used to provide milder mixing than kneading discs which tend to break glass fibers. 

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