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.

A flow path forming device is provided that includes: a first flow path forming member having a first flow path forming surface; and a second flow path forming member having a second flow path forming surface. The first flow path forming surface and the second flow path forming surface form a flow path through which a plastic composition flows. When a water droplet is deposited on a droplet deposition surface of each of the first flow path forming surface and the second flow path forming surface, and the droplet deposition surface on which the water droplet is deposited is tilted to measure a maximum droplet weight, an average value of the maximum droplet weight on the first flow path forming surface and the maximum droplet weight on the second flow path forming surface is 8 g or more and 25 g or less.

A polymer melt candle filter having a support which comprises a hollow cylindrical body defined by a first end, a second end, and a cylinder wall having a first end portion and a second end portion. The first end portion includes a screw thread on its outside surface and optionally a hex fitting on its inside surface for receiving a hex wrench. The second end portion includes a plurality of holes in the cylinder wall. The area of the openings of the holes on the outside surface of the cylinder wall may be larger than the area of the openings of the corresponding holes on the inside surface of the cylinder wall. The shape of the openings of the holes on the outside surface may be non-circular. A polymer melt filter plate assembly which comprises (a) a support plate comprising a plurality of threaded holes; (b) at least one filter which is screwed into at least one of the threaded holes via the screw thread on the outside surface of the first end portion of the filter support; (c) a tie rod with (i) a first end extending through a hole in a cone insert and a cap located at the second end of the filter support, and (ii) a second end extending through a threaded hole in the support plate; and (d) a cross bar which is attached to the second end of the tie rod for holding the support plate inside a shaft of an apparatus for filtering a polymer melt.

An extruder for hybrid microcatheters comprises an extrusion die, a commuter element and several resin sources, the commuter clement allowing for resin selection.

Improvements in the extrusion of thermohardenable materials are achieved by cooling the material in the initial zone of the extruder and reducing residence time by use of a prescribed length to diameter ratio and screw speed, particularly useful for intermittent application during robotically controlled mass production.

The present disclosure relates to a plank with anti-slip function and a method preparing the same; it belongs to the technical field of plank manufacturing. The plank with anti-slip function includes a support body and an anti-slip body clamped on the support body; the anti-slip body has a clamping member; the support body is provided with a plurality of clamping grooves that cooperate with the clamping member; the clamping groove is provided with at least one limiting part that restricts the clamping member from escaping from the clamping groove; the support body is made of thermoplastic material, and the anti-slip body is made of elastomer material. In the present disclosure, by replacing the material of the support body with thermoplastic polyolefin, the cost of the support body is significantly reduced, and the strength is improved; the present disclosure will also provide a matching structure between the support body and the anti-slip body to make the anti-slip body firmly clamped on the support body, so that the present disclosure simultaneously exerts the advantages of the thermoplastic support body and the elastic anti-slip body, thereby the plank has the advantages of high compressive strength and good surface contact.

The extruder screw comprises a screw body (2) coated by an external functionalization coating (4), and also at least partially coated by a wear detection-quantification coating (5) arranged between the external surface (3) of the screw body (2) and the external functionalization coating (4), and detectable with respect to the external functionalization coating (4).

The present disclosure relates to a plank with anti-slip function; it belongs to the technical field of plank manufacturing. A plank with anti-slip function includes a support body and an anti-slip body; the anti-slip body has a clamping member; the support body is provided with a plurality of clamping grooves; the clamping groove is provided with at least one limiting part that restricts the clamping member from escaping from the clamping groove. In the present disclosure, by replacing the material of the support body with thermoplastic polyolefin, the cost of the support body is significantly reduced, and the strength is improved; the present disclosure will also provide a matching structure between the support body and the anti-slip body, so that the plank has the advantages of high compressive strength and good surface contact.