Multilayer crystallizable heat shrinkable films and sheets comprising amorphous copolyester compositions and crystallizable copolyester compositions which comprise residues of terephthalic acid, neopentyl glycol (NPG), 1,4-cyclohexanedimethanol (CHDM), ethylene glycol (EG), and diethylene glycol (DEG), and which incorporate recycled PET, in certain compositional ranges having certain advantages and improved properties including recyclability.

A compression moulding machine comprises: an extrusion unit configured to extrude a rod of pasty polymeric material; a cutting element, configured to portion the rod into individual charges; a rotary carousel, including a plurality of moulds, each mould being configured to receive a respective charge and to form a corresponding object from the charge; a feeder, configured to convey each charge to a respective mould at a feed position; an inspecting device, configured to capture inspection data, representing a composition of the rod or of the charges.

The invention relates to a process for producing an extruded sulfur-crosslinkable rubber mixture, comprising the following process steps: A) producing a sulfur-crosslinkable rubber mixture by means of a mixer or providing a sulfur-crosslinkable rubber mixture, where the temperature of the sulfur-crosslinkable rubber mixture is less than 35 C., B) contactlessly adjusting the temperature of the sulfur-crosslinkable rubber mixture produced or provided in step A) to at least 40 C. in a temperature adjustment unit, C) measuring the temperature of the rubber mixture in the temperature adjustment unit and D) feeding the sulfur-crosslinkable rubber mixture that has been measured in step C) into an extrusion unit at a temperature of 35 C. or more and extruding the fed rubber mixture in the extrusion unit. The invention further relates to an apparatus for performing the process and to the use of the apparatus.

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.