A conveyance portion, a barrier portion, and a path are provided at places of a screw main body in which a kneading portion is provided. In at least one of the places, the path is provided inside the screw main body, and includes an entrance and an exit. The entrance is opened to urge the raw materials having the conveyance limited by the barrier portion to increase pressure on the raw materials, to flow in the entrance. The raw materials flowing from the entrance flow through the path in the same direction as a conveyance direction of the conveyance portion.

At a part of the screw main body at which the kneading portion is provided, conveyance portions, a barrier portion and a path are provided at a plurality of places. At least one of the places, the path is provided inside the screw main body, and includes an entrance and an exit. The entrance is opened in such a manner that the raw material whose pressure is enhanced by being restricted in conveyance by the barrier portion flows into the entrance. The path is formed in such a manner that the raw material flowing into the path from the entrance flows toward the exit in a direction opposite to the direction of conveyance.

The invention relates to a method for degassing elastomer-containing media, such as elastomer solutions and dispersions in particular, and degassing devices (1) for carrying out said method.

The invention relates to novel screw elements for multi-screw extruders with screw profiles co-rotating in pairs and being fully self-wiping in pairs, to the use of the screw elements in multi-screw extruders and to a process for extruding plastic compositions.

Provided are methods and systems for dispensing filament adhesive onto a target substrate. A filament adhesive is applied on a target substrate according to a bead application plan, then the applied bead is checked against performance criteria. A second bead application plan is generated, and subsequent filament bead applied according to the second bead application plan.

An element for a counter-rotating twin screw processor is disclosed. The element has an axial bore for mounting on a screw shaft of the processor. The element or a portion of the element comprises a continuous self-wiping flight helically formed thereon. Further, the element comprises one or more lobes with a lobe profile that is defined in a radial plane of the element and is provided by a functionally continuous curve obtained by combining a first curve to a second curve. The second curve is a mirror-image of the first curve about a radial axis passing through a central axis of the element and one of two extreme points of the first curve. The first curve is represented by a mathematical expression.

An extruder for processing hydrocarbon-containing material. The extruder includes a screw that is rotatably positioned in a barrel liner and a heating system positioned about at least a portion of the barrel liner that is designed to heat the hydrocarbon-containing material as the hydrocarbon-containing material moves through the barrel liner.

The present invention relates to new screw elements for multi-screw extruders with pairs of co-rotating and fully wiping screws.

An extruder for processing hydrocarbon-containing material. The extruder includes a screw that is rotatably positioned in a auger barrel and a heating system positioned about at least a portion of the auger barrel that is designed to heat the hydrocarbon-containing material as the hydrocarbon-containing material moves through the auger barrel.

The present invention relates to new screw elements for multi-screw extruders with pairs of co-rotating and fully wiping screws.