This acrylic polymer external lubricant processing aid is a solid polymeric processing additive. During plastic thermal processing, it gradually migrates to the interface between molten polymer and metal surfaces of screw, barrel and die. A continuous slippery boundary film is established to decrease metal‑melt adhesion. It effectively suppresses plate‑out, reduces build‑up deposits on die lips and mold cavities. The product is suitable for rigid PVC, as well as various engineering plastics. It

Product Detail

Product Detail Page: This acrylic‑polymer‑based external lubricant is synthesized via controlled polymerization of selected acrylic monomers, followed by spray‑drying and milling into fine free‑flowing powder. Strict filtration and sieving steps remove oversized particles and granular impurities. Each production batch is tested for particle size distribution, thermal decomposition temperature, melt migration behavior and processing performance, ensuring stable thermal resistance and consistent lubricating effect for high‑temperature plastic extrusion and injection molding.

During continuous extrusion or injection molding of PVC and engineering plastics, molten polymer tends to adhere to hot metallic equipment surfaces. Sustained metal‑melt adhesion leads to gradual accumulation of degraded resin deposits on die, screw and mold surfaces. These accumulated deposits are commonly referred as plate‑out. Plate‑out creates surface scratches, streaks and dark spots on finished plastic parts. Frequent machine shutdown is required for manual cleaning of dies, which reduces production output. Conventional low‑molecular‑weight external lubricants may exhibit excessive volatility at higher processing temperatures used for engineering plastics, causing fume emission inside the processing workshop and diminishing lubricating effectiveness.

When dry‑blended with PVC or engineering plastic resin at the recommended dosage range, the fine acrylic‑polymer powder disperses uniformly inside the resin matrix. Under processing heat and shear, this polymeric lubricant slowly migrates toward the boundary between hot polymer melt and metal equipment. It builds a durable slippery protective film at the metal‑melt interface. The boundary layer reduces direct contact and adhesion between molten plastic and metal surfaces of extruder barrel, screw, die and injection mold. Plate‑out and die lip deposit formation are significantly restrained. Extrusion torque remains more stable during long‑run production. Finished plastic components obtain smoother and glossier surface quality. Machine shutdown intervals for die and mold cleaning can be extended.

Dosage control is critical for this acrylic polymer external lubricant. Insufficient addition cannot form an effective boundary film, so metal adhesion and plate‑out problems persist. Excessive loading will reduce melt cohesion, decrease melt strength, potentially induce slippage inside the extruder, and may negatively impact mechanical properties of final plastic articles. Formulators should perform laboratory compounding and processing trials to confirm optimal addition amount according to specific resin grade, equipment type and processing temperature profile. This lubricant can be used together with thermal stabilizers, internal lubricants and mineral fillers within PVC and engineering‑plastic formulations.

For compounding operation, weigh the powder and mix it thoroughly with base resin, stabilizers and other additives during high‑speed mixing to achieve homogeneous dry‑blend before extrusion or injection molding.

Keep the powder away from moisture and foreign contaminants. Long‑term storage under high humidity may cause minor caking of the powder.

Major application fields: external lubricating processing aid for rigid PVC profile, pipe and sheet extrusion; anti‑plate‑out additive for injection‑molded engineering plastic components; metal‑adhesion‑reducing processing auxiliary for continuous plastic production.

Store the product in tightly‑sealed original packaging within 15‑30℃, keep dry and avoid direct sunlight.

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Plastic External Lubricant Processing Aid Acrylic Polymer, Reduce Metal Adhesion for PVC & Engineering Plastic

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.