A connecting tube assembly (128) for an extruder (110) is proposed. The connecting tube assembly (128) comprises a connecting tube (130), wherein the connecting tube (130) is configured for connecting to a dosing conveyor device (118) and a side feed (126) of the extruder (110), wherein the connecting tube (130) defines a longitudinal axis (132), and a drive device (142), wherein the drive device (142) is configured for rotating the connecting tube (130) about the longitudinal axis (132). Furthermore, an extruder (110) is proposed.

The present invention relates to a process for the production of panels for floor or wall coverings comprising the steps of mixing and homogenising raw materials, thereby obtaining a dryblend, extruding said dryblend, thereby obtaining one or more thermoplastic layers, laminating the afore-mentioned thermoplastic layers, thereby obtaining a panel for floor or wall coverings, wherein said raw materials and/or said dryblend are predominantly transported vertically downwards during the weighing, mixing and/or homogenising of said raw materials and during the feeding of said dryblend to extruders via feeding units,

A film blowing machine for producing a film web from a recycled material having a.-an extruder for melting and homogenizing the recycled material into a melt, b. an annular die for extruding a film tube, c. a guide for a melt flow between the extruder and the annular die via an annular die melt pump, for conveying the melt to the annular die, d. a tube-forming zone for longitudinal and transverse drawing of the film tube, e. a cooling means for the film tube moving in the machine direction, f. a flattening unit on the other side of the tube-forming zone for flattening the film tube into a double layer film web, g. a pair of draw-off rollers on the other side of the cooling means for drawing off the film tube, and h. the extruder is designed as a twin-screw extruder.

A method of increasing bubble stability of a needful high molecular weight bimodal high-density polyethylene resin in need thereof, the method comprising subjecting the needful high molecular weight bimodal high-density polyethylene resin to a determined amount of oxygen tailoring of the resin so as to independently increase both the resin's melt storage modulus G (at G=3000 pascals) and complex viscosity ratio SH1000, and thereby make an oxygen-tailored high molecular weight bimodal high-density polyethylene resin having a targeted increase in bubble stability. The method uses a tailoring effective amount of molecular oxygen (O.sub.2) to achieve the desired oxygen tailoring. The method uses these advanced rheological properties from dynamic mechanical spectroscopy, but analyzes the data in a different way that is more sensitive to changes in resin composition and properties, and yet achieves a resin regime having a targeted increase in bubble stability.

A winder for forming a yarn package can have a spindle axis. The winder can comprise a spindle that is configured to be rotatably driven about the spindle axis. A color probe can be positioned with respect to the spindle to measure a color value of yarn wound on the spindle.

The wet masterbatch production line based on high-speed impinging stream reaction is provided, and includes: the mixing unit, configured for mixing and standing carbon black and latex to obtain granular rubber material; the dehydration unit, configured for performing dehydrating treatment on granular rubber material after standing to obtain flocculent rubber material; the conveying and refining unit, configured for conveying and refining dehydrated flocculent rubber material to obtain sheet rubber material; the cooling treatment unit, configured for cooling, and folding and stacking refined sheet rubber material; and the control unit, configured for automatically controlling the mixing unit, the dehydration unit, the conveying and refining unit and the cooling treatment unit. The working state of the extrusion-dehydration-expansion-drying integrated machine is accurately controlled, so that the rubber material generates heat at a certain internal pressure, a certain stirring rotating speed and a certain shearing speed.

Granulation method and device for crosslinked polyethylene cable insulating material having voltage grade of at least 500 kV are provided. The method includes: controlling melt extrusion system to melt insulating material; directing the melt into melt gear pump through first branch flow channel; measuring pressures at inlet and outlet of the melt gear pump, and calculates first pressure difference p.sub.1; rotational speed of melt gear pump is adjusted such that p.sub.1 approximates to 0; measuring pressures at inlet and outlet of capillary mold, and calculate second pressure difference p.sub.2; volume flow rate Q of the melt flowing into capillary mold is obtained based on number of steps of rotation of melt gear pump; shear rate, shear stress and shear viscosity of the melt are obtained based on Q and p.sub.2; and adjusting process parameters, adjusting to obtain adjusted , and causing to be within processing-suitable viscosity range.