Kneading Element
GEAR MIXER, TYPE ZME
Gear mixers are created from a single lobed intermeshing screw problem with recerse design by intr- oducsing grooves in the conveying direction of the pitch. This produces a filled up element which mixes intensively distributive.
SCREW MIXING ELEMENT SME
The screw mixing element is a two- lobed standard profble screw with reverse-conveying milled recesses in gear format. This element allows for gentle distributive mixing. Very well suited for products that do not tend to form deposits.
GEAR MIXER BLOCK, TYPE ZB
Gear mixer blocs of the type ZB are created through afternating gear rims on the left & right shaft. It consists with a large degree of variabillity in terms of dimensionning. The teeth can be designed both as forward conveying.
IGEL" ELEMENT
The Igel” element is created from a right-handed and left-handed screw cutting above each other. Mixed dia- mond-shaped spikes are the result. It behaves neutral in regard to conv- eying and is used for distributive mixing. The “IGEL” element is a specialized mixing component in extrusion systems, featuring spiked or toothed geometry .
KNEADING BLOCK, NEUTRAL
Standard kneading block in bi-lobed design with tightly inter-meshing profile. The discs are offset by 90 degree so that this kneading block exhibits conv- eying-neutral behaviour In a sequence of neutral kneading blocks the degree of folling can thus be inFbuenced well through the process conditions.
SHOULDER KNEADING BLOCK KBS
The shoulder kneading block, type KBS, is a proprietary devel-opment from CPM Extrusion Group and has proven benefbcial as a standard ele- ment in many applications. Through a reduc-tion of the width of the disc in favor of wider overFbow areas shearing peaks are reduced and more homogeneous melting results are produced.
KNEADING BLOCK, REVERSE
Reverse kneading blocks create pre- ssure in order to cause a backup before the element. These kneading blocks lead to a high energy introdu- ction. They are usually designed at lengths smaller than the diameter to prevent the pressure peaks and shear strain in the material from becoming too large.
KNEADING BLOCK CONVEYING
The standard kneading block with conveying design can be constructed both with narrow and relatively wide discs. It ex-hibits a certain conveying capacity and is partially folled with-out upstream Fbow restriction element. The preferred offset angle is 45 degree; however, versions with 30 or 60 degree.
ECCENTRIC TRANSITION KNEADING BLOCK
If a dispersion or melting zone is des- igned with three-lobed, YeccentricX kneading blocks of the type KBX a pair of transition blocks, type KBX-A or KBX-B must be installed both upstream and downstream. These elements through the two-lobed starting disk.
ECCENTRIC KNEADING BLOCK
In extruders with the currently popular outside to inside diam-eter ratios three lobed kneading blocks are only pos- sible with a special prafble. High-per- formance extruders often provide very high driving power. In addition, the eccentric kneading block KBX provides very high melting capacity through high energy input at favora ble geometric conditions.
