LDPE Blown Film Material Selection Guide: Core Advantages of Shenhua 2426H for Agricultural & Packaging Film Mass Production
2426H is the mainstream general-purpose LDPE blown film resin for agricultural and packaging film manufacturing. Many manufacturers only compare raw material prices while ignoring purity, anti-blocking performance, low-temperature weather resistance and supply stability. Cheap low-quality resins often cause excessive fish eyes, film blocking, low-temperature cracking and unstable film bubbles, leading to heavy waste and frequent machine debugging losses. This article analyzes industry production pain points, lists professional LDPE selection standards, and introduces the strengths of coal chemical Shenhua 2426H for scientific raw material selection.
Common Production Pain Points Caused by Inferior LDPE
First, low-grade resins contain abundant gels and impurities, creating visible film defects that fail food and agricultural packaging inspections. Scrap losses far exceed raw material cost savings. Second, insufficient anti-blocking and slip additives cause tightly wound films, disrupting automatic slitting and bag-making lines and raising labor costs. Third, poor low-temperature toughness makes agricultural films crack easily under frost and temperature changes, resulting in high customer return rates. Fourth, petroleum-based LDPE supply fluctuates sharply due to crude oil prices and equipment maintenance. Material shortages in peak production seasons force parameter readjustment and massive production loss.
Three Core Selection Standards for Blown Film LDPE
Flow Performance
Shenhua 2426H features an MFR range of 1.9–2.2 g/10min (190℃/2.16kg, ISO 1133) with a typical value of 2.16 g/10min, and density of 0.924–0.925 g/cm³ (GB/T 1033.2). Stable melt properties maintain intact film bubbles and fixed extrusion parameters to reduce batch debugging work.
Optical & Mechanical Performance
It delivers a low haze of 5.7% and tensile breaking strength ≥10.6MPa (GB/T 1040.2, typical value). Optimized for agricultural films, the resin has great low-temperature toughness (manufacturer test data for reference only) and stays flexible at -40℃ without cracking during storage and transportation.
Processing Compatibility
Pre-mixed food-grade anti-blocking and slip additives disperse evenly without blooming, matching high-speed bag making, composite film heat-seal layers and slitting machines.
Production & Supply Advantages of Shenhua 2426H
Produced by continuous coal chemical polymerization with multi-stage filtration, its fish eye indicators meet strict standards: 0.8mm fish eyes ≤ 0 per 1520cm², 0.4mm fish eyes ≤ 1 per 1520cm², far exceeding GB 11115 requirements for fewer defective films. It mixes well with UV weather-resistant masterbatches to extend outdoor film service life and cut after-sales risks.Different from volatile petroleum-based LDPE supply, Shenhua’s independent coal chemical production ensures year-round stable spot inventory across North, Northwest and East China, eliminating peak-season material shortages and production downtime.
Application Scope & Selection Summary
Shenhua 2426H fits greenhouse films, mulch films, fruit insulation films, shopping bags, single-layer food packaging and composite film heat-seal substrates. It is not suitable for high-end optical films requiring ultra-low haze and gloss.When selecting blown film resins, factories should prioritize overall production costs, yield and supply stability rather than low unit prices. With rigorous quality control, balanced optical-mechanical performance and reliable long-term supply, Shenhua 2426H optimizes production efficiency and cuts comprehensive costs for most agricultural and packaging film manufacturers.
