| HS Code | 437989 |
| Density | 0.926 g/cm³ |
| Melt Flow Index | 1.0 g/10min (190°C, 2.16kg) |
| Melting Point | 124 °C |
| Vicat Softening Point | 105 °C |
| Tensile Strength At Yield | 11 MPa |
| Tensile Strength At Break Md | 40 MPa |
| Elongation At Break Md | 450% |
| Elongation At Break Td | 650% |
| Flexural Modulus | 380 MPa |
| Dart Drop Impact Strength | 150 g |
| Environmental Stress Crack Resistance | >500 hours |
| Brittleness Temperature | -70 °C |
As an accredited HANWHA LLDPE 3126 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | HANWHA LLDPE 3126 is packaged in 25 kg moisture-proof polyethylene bags, palletized and stretch-wrapped for safe transport. |
| Container Loading (20′ FCL) | 20′ FCL container loading of HANWHA LLDPE 3126, a linear low-density polyethylene resin, secured and stowed safely. |
| Shipping | SHIPPING DESCRIPTION: Linear Low-Density Polyethylene (LLDPE) Resin, Hanwha Grade 3126. Supplied as free-flowing granules/pellets. Non-hazardous material, not regulated for transport (IMDG/ADR/IATA). Packaged in 25 kg bags or 500-1000 kg bulk sacks. Keep dry and protect from moisture. Ensure stable stowage away from heat sources. |
| Storage | Store HANWHA LLDPE 3126 in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep containers sealed to prevent moisture contamination and dust accumulation. Avoid prolonged high temperatures to prevent softening or degradation. Use proper grounding during handling to minimize static discharge. Maintain compatibility with clean equipment and store away from oxidizing agents. |
| Shelf Life | Shelf life is indefinite when stored indoors in dry, cool conditions away from direct sunlight and contamination. |
On pallet-unitization cast film lines equipped with 45:1 L/D barrier screws, 2,400 mm coat-hanger dies, and polished chill rolls held at 18–22°C, HANWHA LLDPE 3126 is introduced as a melt-rheology modifier and tear-resistance contributor in 20–40 wt% blends with metallocene-catalyzed hexene LLDPE. The resin’s butene-branch distribution reduces melt fracture at high shear rates, though published data for this specific configuration is limited regarding the exact onset of sharkskin at output above 350 kg/h. Compliance for pallet wrap sold in the EU falls under Directive 94/62/EC, REACH 1907/2006 Article 33 for SVHC communication, and, when food-contact pallet stretch is specified, EU Regulation 10/2011 with overall migration limits of 10 mg/dm² under food simulant D2 at 40°C for 10 days. Addition ratios in cast stretch films place HANWHA LLDPE 3126 at 15–40 wt% of total film weight, with the balance being metallocene LLDPE of density 0.910–0.915 g/cm³. The downstream process is single-screw cast extrusion at melt temperatures of 240–265°C, air-knife pinning onto a primary chill roll, and pre-stretch at draw ratios of 2.5:1 to 3.0:1 in powered pre-stretch units. Terminal products include 20–35 µm machine film, 8–12 µm hand wrap, and 25 µm pre-stretched film. Performance is verified by ASTM D5748 for cling properties, ASTM D5458 for peel cling, ASTM D882 for tensile elongation, and ASTM D1894 for coefficient of friction.
Blown film lines producing 150–200 µm heavy-duty sacks with a 70 wt% HANWHA LLDPE 3126 / 30 wt% LDPE blend report bubble instability when the melt-index distribution widens beyond ±15% of the nominal grade value, because the bubble’s strain-hardening response in the frost-line region cannot compensate for local thickness variation. Melt-index distribution is measured by ISO 1133-1:2022 at 190°C and 2.16 kg. In this application, addition ratios place HANWHA LLDPE 3126 at 60–80 wt% with LDPE film grades and optionally 10–20 wt% HDPE for stiffness; the LLDPE contributes dart impact and machine-direction tear resistance measured by ASTM D1709 method A and ASTM D1922, while LDPE contributes shear-thinning and bubble stability. Processing uses 80–120 mm grooved-feed extruders with 30:1 L/D, die gap 2.0–2.4 mm, BUR 2.5–3.0, frost-line height 800–1,100 mm, and melt temperature 190–220°C. Die-lip build-up associated with low-molecular-weight fractions is observed after 72 h of continuous operation when die-exit velocity exceeds 1.2 m/min; cleaning intervals are therefore scheduled per output per die circumference rather than total tonnage. Compliance documentation includes ISO 21898:2004 for FIBC outer packaging when used in bulk logistics, Directive 94/62/EC, and ASTM D1709/ISO 7765-1 for impact resistance. Terminal products include 100–250 µm shipping sacks, FIBC liners, automotive component overwrap, and construction debris bags.
Extrusion lamination of a 15–30 µm sealant web onto metallized PET or aluminum foil for dry-food pouches uses HANWHA LLDPE 3126 as the heat-seal layer because its butene comonomer content yields seal initiation at 90–105°C when measured by ASTM F2029. The material is processed at melt temperatures of 300–320°C through a slot die with an air gap of 150–250 mm onto corona-treated substrate; neck-in at these temperatures is controlled by blending 15–25 wt% LDPE with the 75–85 wt% LLDPE 3126. Regulatory compliance for food contact requires FDA 21 CFR 177.1520(c)3.2 for the polyolefin, EU Regulation 10/2011 with a total migration limit of 10 mg/dm², and REACH Annex XVII for restricted phthalates and semivolatile substances. Terminal products include stand-up pouches, three-side-seal sachets, frozen-food film laminates, and lidding film for PP cups. Heat-seal strength is verified by ASTM F88/F88M-21 after sealing at 120°C and 0.3 MPa for 1.0 s; delamination resistance is governed by ASTM F904-16.
On 1,800–2,400 mm die-diameter three-layer blown film lines producing 25–40 µm silage cover film, HANWHA LLDPE 3126 is specified at 70–80 wt% with metallocene LLDPE at 20–30 wt% to maintain dart-drop resistance and tear-propagation resistance required by EN 13206:2017 for agricultural thermic films. The butene branch distribution produces lower puncture-propagation resistance than octene-catalyzed grades, a limitation observed when bale wrap is applied at high pre-stretch; therefore, in direct rock-contact service LLDPE 3126 is positioned only in the core layer of an A/B/A structure, not as the outer skin layer. Processing uses a 30:1 L/D barrier screw, die gap 1.6–2.0 mm, BUR 2.0–2.5, and melt temperature 195–220°C; UV stabilizer masterbatch is added at 1.5–2.5 wt% in the surface layer. Regulatory compliance includes REACH 1907/2006, EU Regulation 10/2011 when silage film is specified for indirect food contact, and EN 13206:2017 for thermic properties. Terminal products include silage sheets, bale wrap, and temporary silo covers; oxygen transmission rate is measured by ASTM D3985 at 23°C and 0% RH.
Cast coextrusion of 35–60 µm surface-protection film for high-gloss acrylic and stainless steel panels uses HANWHA LLDPE 3126 in the tie or backing layer at 30–50 wt% to adjust peel adhesion and reduce gel streaks. The film is produced on a cast line with a three-layer feedblock, die width 1,600–2,000 mm, and melt temperature 230–255°C; the adhesive layer is a tackified EVA or polyethylene-vinyl acetate compound, while the backing layer containing LLDPE 3126 provides tensile strength per ASTM D882 and Elmendorf tear per ASTM D1922. Addition rate is limited to 50 wt% in the backing layer because higher levels raise elastic recovery force and cause edge lifting on curved thermoformed parts. Compliance for industrial surface protection is governed by REACH 1907/2006 and RoHS Directive 2011/65/EU for restricted heavy metals; for electronics logistics, IEC 61340-5-1 applies when antistatic additives are included. Terminal products include 40 µm glass protection film, 55 µm stainless steel sheet masking, and pre-mask for polycarbonate glazing.
When beverage multipack collation film is downgauged below 45 µm, HANWHA LLDPE 3126 is incorporated at 20–30 wt% with LDPE and metallocene LLDPE to lower shrink initiation temperature while retaining burst strength during shrink-tunnel dwell at 140–160°C. The process is single-bubble blown film with BUR 2.0–2.5 and an annealing tower temperature profile of 80–100°C. Compliance for beverage multipack shrink film includes FDA 21 CFR 177.1520 when direct food contact is specified, EU Regulation 10/2011, and ASTM D2732 for unrestrained linear thermal shrinkage. Terminal products include 50 µm printed collation shrink sleeves, 60 µm bottle multipack overwrap, and 45 µm tray shrink film. Shrinkage at 135°C is measured per ASTM D2732; tensile strength at yield is per ASTM D882.
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Linear low-density polyethylene grade HANWHA LLDPE 3126 is a butene α-olefin copolymer supplied by Hanwha Chemical Corporation for blown film and cast film conversion. The manufacturer’s technical datasheet identifies the resin as a Ziegler-Natta catalysed ethylene-butene copolymer with a nominal density of 0.918 g/cm³ and a melt mass-flow rate of 1.0 g/10 min determined at 190°C under 2.16 kg load according to ASTM D1238-23 and ISO 1133-1:2022. The resin is supplied as pellets containing a primary antioxidant and a processing stabilizer. Film qualification is normally performed against ASTM D638-22 for tensile properties, ASTM D1922-23 for Elmendorf tear, and ASTM D1709-23 for falling dart impact. The density and melt index combination places the grade among medium-viscosity butene linear low-density polyethylenes used for shipping sacks, agricultural film, and lamination sealant webs where high clarity is not the controlling specification. The material is not considered a metallocene LLDPE substitute in optical film applications.
| Inspection parameter | Test standard | Condition / typical target |
|---|---|---|
| Melt mass-flow rate | ASTM D1238-23, ISO 1133-1:2022 | 190°C, 2.16 kg; 0.90–1.10 g/10 min |
| Density | ASTM D1505-18, ISO 1183-1:2019 | 23°C; 0.917–0.921 g/cm³ |
| Tensile yield stress | ASTM D638-22, ISO 527-2:2012 | 50 mm/min; 10–13 MPa |
| Tensile elongation at break | ASTM D638-22 | >700% |
| Elmendorf tear | ASTM D1922-23, ISO 6383-2:1983 | 25 µm blown film; report MD/TD ratio |
| Falling dart impact | ASTM D1709-23, ISO 7765-1:1988 | Method A; report failure mass |
| Food-contact status | FDA 21 CFR 177.1520, REACH EC 1907/2006, RoHS 2011/65/EU | Verify additive package and migration limits |
Published data for lot-to-lot variation in dart impact and tear anisotropy for this exact grade is limited; converters should request the supplier’s certificate of analysis for each lot because film properties depend on extruder direction, die gap, and draw-down ratio.
The primary structural distinction is short-chain branch length. In LLDPE 3126, the butene comonomer introduces ethyl branches; in hexene-based film grades, butyl branches are formed. At equivalent density and melt index, longer butyl branches are more effective at generating tie molecules between crystal lamellae. This creates higher dart impact and tear resistance in downward-gauged films. The practical consequence is that hexene grades frequently permit thickness reductions of 10–20% while retaining equivalent toughness, whereas LLDPE 3126 is more commonly specified for 50–100 µm applications or for blends where downgauging is limited by stiffness, creep, or heat-seal requirements. Elmendorf tear values measured under ASTM D1922-23 are typically lower for the C4 resin than for a C6 resin of equivalent melt index; however, tear anisotropy is also governed by blow-up ratio, frost line height, and die gap. A direct substitution should not be made without a matched-line film evaluation because the orientation state generated by a specific extruder-die configuration can alter tear ranking.
Against metallocene LLDPEs, LLDPE 3126 has a broader molecular weight distribution and lower clarity, gloss, and organoleptic performance. It is selected where conventional blown film extruder stability and lower gel tendency are more important than optical grade performance. The butene backbone can exhibit lower die deposit formation than high-viscosity C6 grades on high-output cast film lines; published data for this specific configuration is limited.
In addition to branch length, the comonomer distribution contains a fraction of linear polyethylene molecules with low branching density. The melting peak measured by differential scanning calorimetry according to ISO 11357-3:2018 is near 120–124°C for LLDPE 3126, and the crystallinity is approximately 45–50%. These values are typical for a 0.918 g/cm³ butene LLDPE. Because the catalyst system produces a broad composition distribution, the grade displays a wide melting endotherm, which supports heat-seal processing in lamination but reduces ultimate optical clarity.
The resin differs from LDPE homopolymer in melt strength and bubble stability. Pure LDPE has a long-chain branched architecture that supports high blow-up ratios without bubble sag; LLDPE 3126 has a linear backbone and therefore requires tighter control of internal bubble pressure, frost line height, and air ring velocity. In LDPE/LLDPE blends, the addition of 20–30 wt% LLDPE 3126 raises dart impact of the film without proportional loss of bubble stability, but the blend should be run with a dual-lip air ring and higher cooling air flow than a pure LDPE bubble.
On a 75 mm single-screw extruder with a 30:1 L/D barrier screw and an annular die gap of 1.8–2.4 mm, the recommended melt temperature profile is 180–210°C from feed to die. The melt should not exceed 240°C for prolonged residence time; exposure above this threshold accelerates oxidative chain scission, increases gel formation, and imparts off-taste. Die pressure should be maintained below 35 MPa at the screen changer; higher readings indicate screen blockage or excessive downstream restriction. A blow-up ratio of 2.0–3.0 and frost line height of 6–9 die diameters produce balanced tensile properties in 25–80 µm film. If pellets are exposed to ambient humidity above 60% RH, pre-drying at 60–70°C for 2–4 h is required to avoid surface pitting and bubble instability. The resin is incompatible with high levels of polypropylene contamination; more than 3 wt% PP in reclaim can cause delamination, visible gels, and dart impact variability. For cast film, die temperatures are typically set at 230–245°C to reduce melt fracture; the exact profile is set by extruder diameter and output.
Bubble geometry and cooling air conditions are more influential for this grade than for a branched LDPE. When the frost line height is raised beyond 9 die diameters, machine-direction orientation increases and MD tear drops; when the blow-up ratio exceeds 3.0, transverse orientation raises TD tear but reduces tensile modulus in the machine direction. These changes are quantified through tensile property measurements on production-lot film under ASTM D638-22 and tear testing under ASTM D1922-23.
Capillary rheometry on butene LLDPE with melt index 1.0 indicates an apparent viscosity of 1,100–1,400 Pa·s at 100 s⁻¹ and 190°C. Melt fracture onset at the die land is typically observed when wall shear stress exceeds 0.3 MPa; this threshold depends on die gap and die lip roughness. For a 1.8 mm die gap, the critical output rate must be determined on the specific line because die pressure and melt temperature feedback obscure a single universal limit. The resin should be sampled at the die exit for melt index verification per ISO 1133-1:2022 after each formulation change because additive masterbatches can alter the measured melt flow rate by 3–7%.
Faults observed on production-scale lines include bubble instability at high frost line heights, melt fracture at die gaps below 1.8 mm, and die lip deposit formation when slip agents exceed supplier-recommended loading. The slip-additive loading for LLDPE 3126 should be limited to the range specified in the supplier formulation statement because migration of erucamide or oleamide above the recommended concentration can reduce heat-seal strength and increase coefficient of friction variability. In blends with LDPE, the addition of 20–30 wt% LLDPE 3126 raises dart impact of the LDPE-dominated film without proportional loss of bubble stability; in blends with HDPE, the resin improves machine-direction tear but lowers tensile modulus. If the converter uses high-back-pressure mixing sections, the resin may run hotter than an MI-equivalent C6 grade; therefore pay zone temperatures are usually reduced by 5–10°C relative to hexene grades to maintain melt temperature below 230°C.
Additive interactions require attention because the base resin is stabilized with a primary antioxidant package. Additional acid neutralisers or metal stearates should be evaluated for antagonism with the base stabilizer. When color concentrates are added, the carrier polymer should be an LLDPE or LDPE with a melt index of 0.7–1.2 g/10 min; a carrier with a significantly higher melt index can create local viscosity mismatch and visible flow lines in thin film. The maximum recommended masterbatch loading is 5 wt% unless the converter has verified dispersion on a high-shear barrier screw.
Erucamide migration from the film surface follows a time-temperature relationship. At 40°C, a measurable reduction in coefficient of friction occurs within 24–48 h; at 23°C, the same reduction may require 5–7 days. This migration is relevant for lamination and printing because it can lower adhesion to solventless adhesives and printing inks. Corona treatment at 38–42 mN/m according to ASTM D2578-17 is necessary before adhesive application, and the treatment should be performed immediately before lamination because the treated surface decays with time.
The grade is typically specified for agricultural silage film, heavy-duty shipping sacks, and frozen-food lamination. In silage film at 75–100 µm, LLDPE 3126 contributes puncture resistance and outdoor weathering when compounded with the appropriate hindered amine light stabilizer. In lamination sealant webs, the seal initiation temperature is higher than for metallocene grades; the converter should verify the heat-seal window on the target packaging line because sealant performance depends on substrate thermal conductivity, dwell time, and jaw pressure. For heavy-duty sacks, LLDPE 3126 is typically blended with high-strength HDPE to improve dart impact while retaining stack stability.
Applications requiring high clarity, high gloss, or low-temperature seal strength should not specify LLDPE 3126; these are better served by metallocene-catalysed hexene or octene LLDPE grades. Direct food-contact use requires confirmation that the exact antioxidant and slip packages meet 21 CFR 177.1520 and migration limits specified in 21 CFR 176.170. Converters must obtain a food-contact statement from the supplier for the shipped lot because additive changes between production campaigns can alter the regulatory status of the finished package.
In agricultural silage film, weathering resistance requires UV stabilization with a hindered amine light stabilizer at a concentration that is specific to the exposure region. Single-season film allows thinner gauges, but multi-season covers require coextrusion with a barrier layer or additional carbon black. The resin alone does not provide sufficient UV resistance. Tensile retention after weathering should be tested according to ASTM D4329-21 or an equivalent outdoor exposure protocol matched to the intended service life.
