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PE Masterbatch

Updated: 2026-07-21

Overview

PE color masterbatch is a pre-dispersed pigment or dye concentrate embedded in a polyethylene (PE) carrier resin. It simplifies the coloring process in plastic manufacturing by ensuring uniform hue distribution and reducing processing time. The masterbatch typically contains 20–60% pigment by weight, along with additives like dispersants and stabilizers. Masterbatches are favored over raw pigments due to their ease of handling, reduced dust contamination, and consistent color reproducibility. They are widely used in extrusion, blow molding, and injection molding processes for PE-based products.

Physical and Chemical Properties

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PE color masterbatch exhibits properties aligned with its PE carrier, including low moisture absorption and good chemical resistance. The pigment particles are finely ground and uniformly dispersed to prevent agglomeration during processing. Thermal stability is critical, as the masterbatch must withstand PE processing temperatures (typically 160–220°C) without degradation. Density varies based on the pigment type (e.g., organic dyes are lighter than inorganic pigments). Most masterbatches are insoluble in water but melt-blend seamlessly with PE resins. Optional additives like UV stabilizers or anti-static agents can be incorporated for specialized applications.

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Main Applications

The primary use of PE color masterbatch is to impart consistent color to polyethylene products across industries. In packaging, it colors shrink films, grocery bags, and bottle caps. Construction applications include colored PE pipes and geomembranes. Consumer goods like toys, household containers, and automotive parts also rely on masterbatches for aesthetic and functional coloring. Masterbatches are cost-effective for large-scale production, as they reduce pigment waste and energy consumption compared to dry blending. Custom formulations cater to niche needs, such as FDA-compliant colors for food-contact materials or fluorescent shades for safety signage.

Safety and Storage

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While PE color masterbatches are generally non-hazardous, precautions are necessary during handling. Avoid inhalation of dust during manual pouring, and use gloves to prevent skin irritation from certain pigments. Processing at high temperatures may release volatile organic compounds (VOCs), requiring adequate ventilation. Storage recommendations include keeping bags sealed in a dry environment (below 30°C) to prevent moisture absorption, which can affect dispersion. Shelf life is typically 12–24 months if stored properly. Fire safety measures should align with standard PE resin protocols due to flammability risks.

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B2B Procurement Guide

When sourcing PE color masterbatch, prioritize suppliers with technical support for color matching and formulation adjustments. Request samples to test dispersion quality and thermal stability in your specific PE resin. Key certifications to check include ISO 9001 for quality management and REACH compliance for EU markets. Bulk purchases (e.g., 500+ kg) often reduce costs, but ensure the supplier can guarantee batch-to-batch consistency. Clarify lead times and minimum order quantities (MOQs), especially for custom colors. For niche applications, inquire about specialty additives like antimicrobial agents or light diffusers.

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