Abstract: The invention relates to a process for producing a polypropylene composition using a first extruder comprising successive zones comprising a first zone, a second zone, a third zone and a fourth zone and a second extruder comprising successive zones comprising a first zone and a second zone, the process comprising the steps of: 1a) introducing a first propylene-based polymer in the first zone of the first extruder, 1b) melt mixing the first propylene-based polymer in the second zone of the first extruder, 1c) adding an additive masterbatch to the mixture of step 1b) in the third zone of the first extruder and 1d) melt-mixing the mixture of step 1c) in the fourth zone of the first extruder to obtain the polypropylene composition, wherein the maximum temperature in the fourth zone of the first extruder is lower than the maximum temperature in the second zone of the first extruder and is lower than 240° C.

Abstract: A cutting module for cutting a strand into individual pieces, the cutting module comprising a rotatable cutter wheel and a rotatable cot wheel, the cutter wheel being rotatable and having cutting blades, the cot wheel having a cylindrical outer surface and being rotatable parallel at a distance from the cutter wheel, such that cutting edges of the cutting blades contact the outer surface of the cot wheel successively in use, so that a strand which is fed between the cutter wheel and the cot wheel is cut into individual pieces, each of the cutting blades being designed such that a cutting force is directed through the cutting blade.

Abstract: The present application relates to process for producing a glass fibre-reinforced thermoplastic polymer composition, which comprises the sequential steps of: a) unwinding from a package of at least one continuous glass multifilament strand, b) applying a sheath of thermoplastic polymer around the at least one continuous glass multifilament strand to form a sheathed continuous multifilament strand; The unwound, the at least one continuous glass multifilament strand is transported through the inside of at least one protective tube over a certain distance between the location of unwinding from a package of said at least one continuous glass multifilament strand, i.e. step a), and the location of applying said sheath of thermoplastic polymer around said at least one continuous glass multifilament strand, i.e. step b).

Abstract: The present invention relates to a process for the manufacture of a long glass fibre reinforced polypropylene composition. The process comprises: a) providing at least one continuous glass multifibre strand, b) applying a sheath of a polypropylene composition around said continuous glass multifibre strand so as to form a sheathed continuous glass multifibre strand, c) cooling the sheathed continuous glass multifibre strand to a cutting temperature, d) cutting the sheathed continuous glass multifibre strand into pellets using a rotary cutting tool at a cutting temperature that satisfies the following equations I, II and III T_max=?0.625×GF+112.5??(I) T_min=10??(II) T_min?T_cut?T_max??(III) wherein: T_cut is the cutting temperature, T_max is the maximum cutting temperature [° C.], T_min is the minimum cutting temperature [° C.], and GF is the amount of glass fibres based on the weight of the composition [wt. %].

Abstract: A cutting module for cutting a strand into individual pieces, the cutting module comprising a rotatable cutter wheel and a rotatable cot wheel, the cutter wheel being rotatable and having cutting blades, the cot wheel having a cylindrical outer surface and being rotatable parallel at a distance from the cutter wheel, such that cutting edges of the cutting blades contact the outer surface of the cot wheel successively in use, so that a strand which is fed between the cutter wheel and the cot wheel is cut into individual pieces, each of the cutting blades being designed such that a cutting force is directed through the cutting blade.

Abstract: The present invention relates to a process for the manufacture of a long glass fibre reinforced polypropylene composition. The process comprises: a) providing at least one continuous glass multifibre strand, b) applying a sheath of a polypropylene composition around said continuous glass multifibre strand so as to form a sheathed continuous glass multifibre strand, c) cooling the sheathed continuous glass multifibre strand to a cutting temperature, d) cutting the sheathed continuous glass multifibre strand into pellets using a rotary cutting tool at a cutting temperature that satisfies the following equations I, II and III T_max=?0.625×GF+112.5??(I) T_min=10??(II) T_min?T_cut?T_max??(III) wherein: T_cut is the cutting temperature, T_max is the maximum cutting temperature [° C.], T_min is the minimum cutting temperature [° C.], and GF is the amount of glass fibres based on the weight of the composition [wt. %].

Abstract: Method for transporting pellets of a glass fibre reinforced thermoplastic polymer composition from a loading position to an unloading position, said pellets comprising a core and a thermoplastic polymer sheath surrounding said core, wherein the core comprises glass fibres extending in a longitudinal direction of the pellets and an impregnating agent, the method comprising loading pellets onto a non-vibrating belt conveyor at said loading position, conveying the pellets by means of said non-vibrating belt convey—or to said unloading position and unloading the pellets from said non-vibrating belt conveyor at said unloading position. Further methods are claimed as regards a process for manufacturing pellets of a glass fibre reinforced thermoplastic polymer composition and a process for the manufacture at a moulding position of a moulded product from pellets of a glass fibre reinforced thermoplastic polymer composition.

Abstract: The present application relates to process for producing a glass fibre-reinforced thermoplastic polymer composition, which comprises the sequential steps of: a) unwinding from a package of at least one continuous glass multifilament strand, b) applying a sheath of thermoplastic polymer around the at least one continuous glass multifilament strand to form a sheathed continuous multifilament strand; The unwound, the at least one continuous glass multifilament strand is transported through the inside of at least one protective tube over a certain distance between the location of unwinding from a package of said at least one continuous glass multifilament strand, i.e. step a), and the location of applying said sheath of thermoplastic polymer around said at least one continuous glass multifilament strand, i.e. step b).