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Compounds |
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Underwater pelletizing of compounds produces good results in all standard pellet sizes and with virtually all commercial fillers. CaCO3, talc, chalk, TiO2, carbon black, wollastonite, EPDM, EPR are used as fillers, but also pigments and other additives or stabilizers are possible. Products are tacky in processing (high MFI). In micro-pelletizing, pellet sizes of 0.5 mm are currently possible. A uniform pellet distribution within narrow limits and excellent dosing properties permit superior melting behavior. Micropellets = efficient performance increase of extrusion lines. Advantages The advantage of underwater pelletizing in this field is the good cooling of the pellets in the water flow. Another benefit is the round or elliptic pellet shape and the resulting free-flowing properties of the product in the subsequent use. Die plates with specially designed heat conduction for an ideal heat transfer at the interface have considerably extended the window of applications. Reasons for preferring a Gala underwater pelletizing system: • Low capital expenditure • Low space requirements • Low energy costs • Low tooling costs • Fully automatic and redundant design • Low sound pressure level < 80 db(A) |
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