twin screw extruder

twin screw extruder

twin screw extruder

In the twin- screw extruder of the present invention, the clay extruded from the barrel is dispersed to a multiplicity of noodle-like flows by the first straightening vane constituting a former stage of the straightening vane as described above. Thereafter, the multiplicity of noodle-like flows of the clay are narrowed down and bundled to one uniform flow by the second straightening vane constituting a latter stage of the straightening vane and supplied to the die through the filter net . A formed body is unlike to be deformed even if the amount of the formed body to be extruded is changed by employing the straightening vane structure as described above.

In the first straightening vane , although the diameter and the disposition pitch of the through holes are not particularly limited, the diameter is preferably set to about 5 to 10 mm, and the disposition pitch is preferably set to about 6 to 15 mm. When the diameter is set to less than 5 mm, a resistance may increased when the clay passes through the through holes 13 and the amount of extrusion may be suppressed, whereas when the diameter exceeds 10 mm, shear force may not be sufficiently applied to the clay.

It is preferable to set the diameter of the through hole 14 of the second straightening vane 6 to about 12 to 40 mm in the portion thereof having a smallest sectional area. When the diameter is set to less than 12 mm, a resistance may increased when the clay passes through the through hole 14 and the amount of extrusion may be suppressed, whereas when the diameter exceeds 40 mm, the flow of the clay, which passes through the through holes 13 of the first straightening vane 5 and dispersed to the multiplicity of noodle-like flows once cannot be sufficiently narrowed down and bundled and thus the clay may be made to a biased flow.

A structure of a conventional twin- screw extruder can be basically employed as it is as the structure of twin- screw extruder of the present invention except the straightening vanes described above. In the twin- screw extruder of the present invention, the two screws in the barrel may be rotated any of the same direction and a different direction.

Although the shape of the formed body formed by the twin- screw extruder of the present invention is not particularly limited a long as it is a shape obtained by extrusion molding, the twin- screw extruder is preferable to form, for example, a honeycomb formed body which is liable to be deformed because it employ thin partitions to partition cells.

POST COMMENT

South Korean C-Store Industry to Post Over 25% CAGR through 2012 How to Drive Safely How does Diclofenac Sodium (Generic Voltaren) work? Scared of PPC? Beltronics Vector 955: Get the Benefits 642-661 Test Dumps Gluconorm for Controlling Sugar Levels Rules for the First Date Everything You Need to Know about Snoring Prayer 1-99 Guide For All Players In Runescape Mystery Behind Spinning Rims Appear to be Rotating Backward 312-50 dumps 350-040 practice test