Qatar Petrochemical MG70 LDPE

Product Overview

Basic Information:

Manufacturer: Qatar Petrochemical (QAPCO), a major specialized polyethylene producer in the Middle East and a leading global supplier of core LDPE raw materials, providing stable supplies to the global plastics processing and packaging manufacturing industries.

Material Classification: LDPE (Low-Density Polyethylene / High-Pressure Polyethylene).

Physical Appearance: Natural milky-white cylindrical pellets, free from impurities and char, uniform and regular, semi-transparent, odorless, with consistent flow properties.

Product Positioning and Application Overview:

MG70 is QAPCO’s flagship high-melt-flow LDPE grade. With a melt flow index (MFI) of 70g/10min, it is an ultra-high-flow LDPE raw material with a significant market share in thin-wall injection molding, masterbatch carriers, and coating modification. Leveraging QAPCO’s stable integrated refining and petrochemical capacity, this batch features a uniform molecular weight distribution with minimal performance variance, serving as a standard high-flow LDPE base resin for global compounders and injection molding manufacturers. It is widely adapted for thin-wall precision injection molding, color/filler masterbatch carriers, hot-melt adhesive modification, paper/textile coating, plastic blend modification, and single-use plastic daily necessities.

Technical Data Sheet (TDS)

Physical Properties

Thermal Properties

Disclaimer: The technical data sheet (TDS) of Qatar Petrochemical MG70 LDPE material is provided by Qatar Petrochemical Corporation. In case of discrepancies, please refer to the official website of Qatar Petrochemical.

Features & Benefits

• Ultra-High Melt Flow for Thin-Wall Applications: A high melt flow rate of 70g/10min provides excellent flowability, allowing for effortless filling of ultra-thin wall molds (0.1–0.5mm) with low injection pressure, shortening cycle times, significantly increasing production efficiency, and reducing energy consumption.

• Balanced Low Shrinkage for Dimensional Stability: With a mold shrinkage rate of 1.5%, the material offers uniform shrinkage, preventing warping, sink marks, or deformation in small and complex parts, ensuring a smooth surface finish and reducing scrap rates.

• Inherent Chemical Resistance for Modification: The LDPE base provides excellent resistance to acids, alkalis, grease, and saline solutions. It exhibits superior compatibility with calcium carbonate, talc, color pigments, and elastomers, allowing high filler loading without migration when used as a masterbatch carrier.

• Wide Processing Window: With a Vicat softening point of 78℃, the material offers a broad processing temperature range. It resists premature degradation during high-temperature extrusion or injection molding, allowing stable production even in facilities without complex temperature control equipment.

• High Purity: Original QAPCO pellets are free from black spots and char. The natural semi-transparent finish ensures finished parts are free from speckles or color streaks, eliminating the need for secondary filtration and reducing costs.

• Environmentally Compliant: The base formulation is free from heavy metals and halogens, facilitating compliance with international environmental standards for packaging and daily-use items, suitable for cross-border export production.

Applications

1. Injection Molding: Various single-use thin-wall plastic parts: plastic droppers, micro-plastic components, small cosmetic containers, miniature toy parts, plastic fasteners, and packaging spacers. Its high flowability is ideal for high-speed, small-part injection molding.

2. Masterbatch Carriers: Carrier resin for universal black/color filler masterbatches, foaming masterbatches, and antiblock masterbatches. High MFI allows for high inorganic filler loading with uniform dispersion and reduced die clogging.

3. Hot-Melt Adhesives & Modification: Base resin for EVA and POE blend modification, pressure-sensitive hot-melt adhesives, and low-temperature hot-melt adhesives; enhances flowability and improves coating adhesion for non-woven fabrics, paper, and film lamination.

4. Coating and Lamination: Single-sided lamination for paper, non-woven fabrics, and textiles. Excellent melt flow ensures uniform, pinhole-free thin coatings with stable waterproof and moisture-proof properties, commonly used in express packaging and food-grade lamination paper.

5. Plastic Recycling & Modification: Acts as a flow-enhancement additive for recycled PE, improving the flowability of recycled materials, reducing processing viscosity, and enhancing the surface finish of recycled plastic products.

FAQs

Q1: Does MG70 LDPE require drying before processing? What are the drying conditions?

A: This LDPE grade has extremely low water absorption. It can be directly processed via injection or extrusion under standard storage conditions. If the material has been stored in high-humidity environments or exhibits surface condensation, hot-air drying at 80℃ for 1–2 hours is recommended to remove surface moisture and prevent bubbles or water streaks in finished parts.

Q2: What is the core difference between MG70 LDPE, low-MFI LDPE, and LLDPE? How should one select the grade?

A: MG70 is an ultra-high-flow LDPE with an MFI significantly higher than standard LDPE (1–20 MFI) and LLDPE. Low-MFI LDPE is prioritized for film blowing and thick-walled parts requiring higher toughness; LLDPE is preferred for stretch films and high-toughness packaging. The advantage of MG70 lies in its ultra-high flowability, making it suitable specifically for thin-wall injection molding, masterbatch carriers, and coating modification, rather than film blowing or heavy-duty load-bearing parts. Selection should be based on the specific processing technique.

Q3: Does QAPCO MG70 comply with RoHS, and can it be used for food-contact products?

A: The base QAPCO MG70 resin is free from restricted substances such as heavy metals and polybrominated biphenyls, meeting EU RoHS 2.0 requirements. For food-contact applications, the material must be compounded with compliant food-grade additives. We recommend requesting the original COA and food-contact compliance test reports from your supplier to ensure conformity with the regulations of the destination country.

Q4: With a mold shrinkage rate of 1.5%, how should shrinkage margins be accounted for during mold design?

A: Given the standard mold shrinkage rate of 1.5%, the mold cavity dimensions should be designed with a corresponding 1.5% margin. We recommend using this standard value for initial trial molds and making fine adjustments based on actual processing temperatures and holding pressure to effectively control dimensional deviations.