New screw improves mixing.The new Fusion II screw from Xaloy Inc., Pulaski, Va., is said to enhance chaotic mixing relative to earlier designs and thereby improve color or additive additive In foods, any of various chemical substances added to produce desirable effects. Additives include such substances as artificial or natural colourings and flavourings; stabilizers, emulsifiers, and thickeners; preservatives and humectants (moisture-retainers); and dispersion dispersion, in chemistry dispersion, in chemistry, mixture in which fine particles of one substance are scattered throughout another substance. A dispersion is classed as a suspension, colloid, or solution. as well as melt homogeneity Homogeneity The degree to which items are similar. . The Fusion II screw has two barrier zones, with melting and metering taking place in the first zone and intensive, chaotic mixing occurring in the second, which has an undulating root profile. This screw also improves mixing by adding grooves in the primary flights of the second barrier. These allow materials in adjacent melt channels to mix, enhancing the chaotic action produced by the screw's root profile. Fusion II reportedly delivers 15% higher plasticating rates and up to 10[degrees]C lower melt temperatures than standard mixing screws. Plasticating rate is similar to the earlier Fusion design. The screw can also be used in extrusion and blow molding, and it works with PE, PET, ABS, and biodegradable biodegradable /bio·de·grad·a·ble/ (-de-grad´ah-b'l) susceptible of degradation by biological processes, as by bacterial or other enzymatic action. bi·o·de·grad·a·ble adj. PLA (Programmable Logic Array) A type of programmable logic chip (PLD) that contained arrays of programmable AND and OR gates. PLAs are no longer used. See PLD. (language, music) Pla - A high-level music programming language, written in SAIL. . Tel: (724) 656-5600 * PTDirect: 649QD [ILLUSTRATION OMITTED] |
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