A method and an apparatus (1) for the production of a compound used for the manufacture of an article made from rubber or a pneumatic tyre by means of a continuous mixer (2) divided into a mixing section (MS) wherein the mixing of the components of the compound being processed exclusively takes place; a reaction section (RS) located downstream of the mixing section (MS) wherein a mild reaction of the compound being processed is activated; wherein, the reaction section (RS) is provided with heating means for increasing the temperature of the compound being processed in relation to the temperature of the compound being processed within the mixing section (MS); and a cooling section (CS) located downstream of the reaction section (RS) and provided with means for the cooling of the compound being processed down to a temperature that will inhibit further development of the reaction that takes place within the reaction section (RS).

A resin foam production apparatus is provided including: a metal mold including a foaming part and a discharge part; and an extruder configured to feed a resin foamable composition into the metal mold to cause the resin foamable composition to pass through the discharge part. The resin foamable composition comprises at least one type of resin. A ratio of resin pressure Cp2 at the foaming part of the metal mold relative to resin pressure Cp1 generated by the extruder is 0.3 or more.

Disclosed is a method and an extruder for making carbon blocks using poly (vinylidene fluoride) (PVDF) as binder and absorbents such as activated carbon.

An extruder (5) for extruding an electric cable has an extrusion screw (7) arranged inside a barrel (6) and making it possible for the polymer to melt gradually in order to form an extrusion composition and for this composition to be transported along the extrusion screw (7). An extrusion head (8) is arranged at a distal end (21) of the extrusion screw (7) and configured to apply the composition around an elongated electrically conductive element. The at least one liquid injection channel (22) is formed through the barrel (6), the at least one injection channel (22) having at least one outlet orifice (30) emerging in a zone of the extrusion screw (7) in which the thermoplastic polymer is at least partially in the solid state.

The present disclosure concerns an extruded biodegradable material for aquaculture, which comprises at least one biodegradable polymer and at least one functional additive. The production method of the biodegradable material, as well as articles comprising said material, are also disclosed. An aspect of the present invention comprises an extruder for obtaining the extruded biodegradable material.