A process for extruding plastic compositions is provided. The process comprises providing a multi-screw extruder with screw elements and conveying, kneading, mixing, degassing or compounding the plastic compositions in the multi-screw extruder using the screw elements.

The present invention provides a process for the viable production of lyocell cellulose continuous filament yarns

The invention relates to a filter device comprising an inlet chamber, an outlet chamber, a filter system which separates the inlet chamber and the outlet chamber. The filter device is characterised in that the inlet chamber comprises at least one liquid supply line and at least one liquid discharge line and the outlet chamber does not comprise a liquid supply and comprises at least one liquid discharge line. The invention also relates to a corresponding filter method.

A film-making machine that produces stretch film includes an outlet device with an outlet gap for outlet of free-flowing film material and a rotatably mounted casting roll that receives the released free-flowing film material on a surface of the casting roll, and a cleaning device with a rotatably mounted cleaning roll that contacts the film material lying on the surface of the casting roll, wherein the cleaning device has an adjusting mechanism with a circumferential adjustment that adjusts a cleaning position of the cleaning roll along a circumferential direction of the casting roll.

Provided is a method of making a sterilized flat plastic bag including the steps of: forming a roll of a tubular polymeric film in a blown film extrusion process, providing the roll of tubular polymeric film to a bag making process, and forming a sterilized flat plastic bag, wherein the tubular film is not slit in the longitudinal direction during any step of the method, and therefore avoids the necessity of a separate sterilizing step. Also provided is a sterilized flat plastic bag made according to the foregoing method of making and a method of using such a sterilized flat plastic bag to collect and retain a product sample and eliminate product contamination. The sterilized plastic bag made according to the above method provides improved tear strength and resistance to rupture when containing product.

A blow film line and a method for operating the same relates to improving the flow rate in conventional blow film lines without compromising the production quality. The inner cooling body shows an air outlet path, with a cooling ring being embodied in a height-adjustable fashion, with a controller positioning the cooling ring in a lower area of the inner cooling body for the start-up of the facility. The cooling ring is positioned in the upper area of the air outlet path of the inner cooling body in order to achieve the steady-state production.

A blow film line and a method for operating the same relates to improving the flow rate in conventional blow film lines without compromising the production quality. The inner cooling body shows an air outlet path, with a cooling ring being embodied in a height-adjustable fashion, with a controller positioning the cooling ring in a lower area of the inner cooling body for the start-up of the facility. The cooling ring is positioned in the upper area of the air outlet path of the inner cooling body in order to achieve the steady-state production.

The present invention relates to an overturning device (10) for overturning a molten material (200) in a melt channel (110) comprising a melt inlet (20) and a melt outlet (30), wherein between the melt inlet (20) and the melt outlet (30) at least a melt guidance means (40) is assembled for a rearrangement of molten material (200) from the centre (22) of the melt inlet (20) at the edge (34) of the melt outlet (30) and for a rearrangement of molten material (200) from the edge (24) of the melt inlet (20) in the centre (32) of the melt outlet (30).

The present invention relates to an overturning device (10) for overturning a molten material (200) in a melt channel (110) comprising a melt inlet (20) and a melt outlet (30), wherein between the melt inlet (20) and the melt outlet (30) at least a melt guidance means (40) is assembled for a rearrangement of molten material (200) from the centre (22) of the melt inlet (20) at the edge (34) of the melt outlet (30) and for a rearrangement of molten material (200) from the edge (24) of the melt inlet (20) in the centre (32) of the melt outlet (30).

A continuous screen changer, including: an external shell having an internal cavity, and an internal drum. The external shell is provided with a feed port, a screen changing port, and a discharge port. The internal drum is provided with at least four filter screen mounting grooves and material flow passages correspondingly communicating with the filter screen mounting grooves. A sealing wall hermetically connected with the internal cavity is formed between each two adjacent filter screen mounting grooves. Whichever of the filter screen mounting grooves is opposite to the feed port rotates to be opposite to the screen changing port in a rotation process, and whichever of the filter screens is on said filter screen mounting groove opposite to the screen changing port is changed at the screen changing port