Pellet having an axial direction and comprising a core that extends in the axial direction and further comprising a polymer sheath applied around said core, wherein said core comprises a plurality of filaments that extend in the axial direction; said polymer sheath is at least substantially free of said filaments; said polymer sheath comprising a plurality of filler particles; said pellet comprises at least 30%, preferably at least 35%, more preferably at least 40%, and preferably at most 60%, preferably at most 50%, of filaments by weight of the total weight of said pellet. Further disclosed is a reinforced article obtained from molding a plurality of said pellets, and a method of making such a pellet.

The present disclosure provides a process. In an embodiment, the process includes providing pellets of a regrind material. The regrind material is a post-consumer recycle multilayer film (PCR multilayer film) having at least three layers. The PCR multilayer film is composed of (i) a polyethylene layer, (ii) a polyamide layer, and (iii) a tie layer. The tie layer is composed of maleic anhydride grafted substantially linear ethylene polymer (MAH-g-SLEP) having a Mw/Mn from 1.5 to less than 3.5 and a melt index from 0.5 g/10 min to less than 25 g/10 min. The process includes extruding the pellets to form an extrudate, molding the extrudate, and forming, with the extrudate, a molded article having a surface. The surface of the molded article has a surface roughness value, Sa, less than 1000 nm and a root mean square roughness value, Sq, less than 1400 nm.

A cellulosic composite includes a thermoplastic polymer matrix and from 5 up to 80 weight-% of cellulose and/or lignocellulose fibers. The cellulose and/or lignocellulose fibers include a mixture of elongated cellulose and/or lignocellulose fibers having an average elongation equal to or lower than 0.300 and rounded cellulose and/or lignocellulose fibers having an average elongation equal to or higher than 0.325. A mass fraction of the elongated cellulose and/or lignocellulose fibers in the mixture is equal to or larger than a mass fraction of the rounded cellulose and/or lignocellulose fibers in the mixture. The cellulosic composite is an environmentally friendlier substitute for fossil-based plastics that is adapted for production of articles by injection molding.

A cellulosic composite includes a thermoplastic polymer matrix and from 5 up to 80 weight-% of cellulose and/or lignocellulose fibers. The cellulose and/or lignocellulose fibers include a mixture of elongated cellulose and/or lignocellulose fibers having an average elongation equal to or lower than 0.300 and rounded cellulose and/or lignocellulose fibers having an average elongation equal to or higher than 0.325. A mass fraction of the rounded cellulose and/or lignocellulose fibers in the mixture is equal to or larger than a mass fraction of the elongated cellulose and/or lignocellulose fibers in the mixture. The cellulosic composite is an environmentally friendlier substitute for fossil-based plastics that is adapted for production of articles by injection molding.

The invention pertains to A polyannide composition [composition (C)] comprising: from 20 to 95% wt of at least one polyamide [polyamide (A)]; from 1 to 30% wt of at least one branched polyamide different from polyamide (A), said branched polyamide comprising recurring units derived from polycondensation of a mixture [mixture (B)] comprising: at least one polyamine monomer comprising at least three amine functional groups selected from the group consisting of secondary amine group of formula NH and primary amine group of formula -MH.sub.2 [monomer (FN)], and-caprolactam (or derivates thereof); said branched polyamide possessing a concentration of amine end groups (AEG) and a concentration of carboxylic end groups (CEG) such that the difference AEGCEG is of at least 100 meq/kg [polyamide (B)]; andfrom 0.01 to 3.5% wt of at least one thermal stabilizer [stabilizer (S)], optionally, from 0 to 60% wt of at least one filler [filler (F)]; optionally, from 0 to 20% wt of at least one impact modifying rubber [rubber (I)]; optionally, from 0 to 20% wt of other conventional additives, with above % wt being referred to the total weight of composition (C).

The invention is directed to a process for the preparation of a reinforced article which comprises the step of molding a molding composition comprising pellets into the article at an elevated temperature, wherein each of the pellets has an axial length and comprises a core and a sheath around the core, wherein the core comprises an impregnating agent and a multifilament strand comprising glass fibers each having a length substantially equal to the axial length of the pellet and substantially oriented in the axial length of the pellet, wherein the sheath comprises a thermoplastic polymer; and wherein the molding composition further comprises a filler.

The invention refers to a method for producing expanded polymer pellets, which comprises the following steps: melting a polymer comprising a polyamide; adding at least one blowing agent; expanding the melt through at least one die for producing an expanded polymer; and pelletizing the expanded polymer. The invention further concerns polymer pellets produced with the method as well as their use, e.g. for the production of cushioning elements for sports apparel, such as for producing soles or parts of soles of sports shoes. A further aspect of the invention concerns a method for the manufacture of molded components, comprising loading pellets of an expanded polymer material into a mold, and connecting the pellets by providing heat energy, wherein the expanded polymer material of the pellets or beads comprises a chain extender. The molded components may be used in broad ranges of application.

Carbodiimide is added to a molten polyamide resin so as to provide resin pellets. The percentage of residual unreacted carbodiimide to each resin pellet is 0.03% to 0.33% by mass. Manufacturing molded articles using the resin pellets achieves both of an improvement in mechanical strength and an increase in wear resistance, and reduces property variations among the molded articles.

The invention relates to a method for producing a natural fiber-reinforced plastic part, wherein as the starting material natural fibers 5-120 mm in length, a thermoplastic and/or a duroplastic and a lubricant, especially wax, are pelletized without extrusion into long-fiber pellets by cold-forming and the long-fiber pellets are then feed for direct processing into a standard injection molding machine for injecting the plastic part.

A method of reducing aldehyde emissions during injection molding of a part with a cellulosic fiber-reinforced polypropylene composition. An injection molding machine capable of the parameters necessary for injection molding of a cellulosic fiber-reinforced polypropylene composition is provided. Said injection molding machine including: a hopper for holding of a pelletized cellulosic fiber-reinforced polypropylene composition material; a feed throat portion; and, a mixing chamber installed in line with the injection molding machine between the hopper and the feed throat portion. Metering an effective amount of an aldehyde reducing composition into the mixing chamber containing pelletized cellulosic fiber-reinforced polypropylene composition and mixing the pelletized cellulosic fiber-reinforced polypropylene composition with the aldehyde reducing composition for wetting the surface of the pellets with the aldehyde reducing composition. A part is then injection molded with the wetted pelletized mixture.