HDPE Wax CAS 9002‑88‑4 is non‑polar low‑molecular‑weight high‑density polyethylene synthetic wax. It mainly provides prominent external lubricating effect for polymer systems. During rigid‑PVC processing, it migrates to the metal‑melt interface and builds a slippery protective boundary layer, reducing resin‑metal adhesion, restraining plate‑out deposits, improving surface gloss and bringing anti‑blocking performance for extruded profiles and sheets. Meanwhile, this wax serves as effective mold‑r

Product Detail

Product Detail Page: HDPE Wax is produced by thermal degradation of high‑density polyethylene resin. The molten crude material undergoes filtration, cooling and solidification, then processed into flakes, granules or fine powder. Each production batch is tested for softening point, melt viscosity, ash content and lubricating performance, to guarantee stable external‑lubricating capacity for PVC, elastomer and rubber manufacturing.

Rigid PVC extrusion production often suffers from severe resin‑metal adhesion on die and calendar rolls. Without adequate external lubrication, degraded resin residues gradually accumulate to form plate‑out deposits. These deposits create surface scratches, streaks and dark spots on PVC profiles and sheets. Stacked rigid‑PVC sheets are prone to blocking after cooling. For polyolefin elastomer and vulcanized rubber processing, hot elastomer or rubber compound tends to stick onto mold cavities and vulcanization molds, which causes difficult demolding, surface tearing of finished parts and forces frequent shutdown for mold cleaning. Many lubricants show unbalanced internal‑external performance, either causing over‑plasticization of PVC or insufficient release for rubber systems.

When blended into formulations at recommended dosage, HDPE wax melts gradually under processing heat. Due to its non‑polar molecular characteristics, it preferentially migrates toward the contact boundary between hot polymer melt and metallic equipment surfaces, forming a continuous slippery film. For rigid PVC calendaring and extrusion, this boundary layer reduces friction between molten PVC and metal rolls or die lips, suppresses plate‑out buildup, improves surface gloss of finished profiles and sheets, and delivers anti‑blocking property for stacked rigid‑PVC products. For polyolefin elastomer and rubber vulcanization, the wax forms a temporary non‑sticky layer on mold surfaces, easing demolding of cured elastomer and rubber components.

Appropriate dosage control is essential for formulation work. Under‑dosage results in insufficient external lubrication, plate‑out defects, poor gloss and severe blocking of rigid‑PVC sheets. Excessive addition will introduce excessive lubrication, reduce melt strength of rigid PVC, induce surface blooming on rubber and elastomer finished goods, and impair final mechanical performance. Laboratory compounding and processing trials should be completed before formal mass‑scale production. HDPE wax can be used cooperatively with PVC thermal stabilizers, internal lubricants, mineral fillers and rubber vulcanizing agents.

For compounding operations, add HDPE wax flakes, granules or fine powder during high‑speed mixing together with base resin, stabilizers or rubber raw materials before extrusion, calendaring or vulcanization.

Protect the product against moisture and foreign contaminants. Long‑term high‑temperature storage may cause partial softening and caking of wax particles.

Major application fields: external lubricant, gloss‑improving and anti‑blocking additive for rigid PVC profiles, pipes and calendered sheets; releasing processing auxiliary for polyolefin‑based thermoplastic elastomer extrusion and injection molding; mold‑release wax for rubber compound vulcanization.

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

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HDPE Wax External Lubricant CAS 9002-88-4, Rigid PVC Anti-Blocking Gloss for Polyolefin Elastomer & Rubber Release

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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.