| HS Code | 987827 |
| Density | 0.920 g/cm³ |
| Melt Flow Rate | 2.0 g/10 min (190°C/2.16kg) |
| Melting Point | 120°C |
| Vicat Softening Point | 90°C |
| Tensile Strength At Yield | 12 MPa |
| Tensile Strength At Break | 30 MPa |
| Elongation At Break | 600% |
| Flexural Modulus | 250 MPa |
| Shore Hardness | D 50 |
| Brittleness Temperature | -70°C |
As an accredited HANWHA LLDPE 4300N factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | HANWHA LLDPE 4300N is supplied in 25 kg polyethylene bags, palletized and stretch-wrapped for secure transportation. |
| Container Loading (20′ FCL) | 20′ FCL container loading of HANWHA LLDPE 4300N linear low-density polyethylene resin, packed in 25kg bags on pallets. |
| Shipping | HANWHA LLDPE 4300N is a linear low-density polyethylene resin shipped in 25 kg bags on shrink-wrapped pallets, or in bulk bags. Protect from moisture and direct sunlight during transit. Keep dry, ventilated, and away from heat sources. No hazardous cargo classification under normal transport conditions. |
| Storage | Store HANWHA LLDPE 4300N in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and open flames. Keep original packaging sealed to prevent moisture absorption and contamination. Avoid stacking too high to prevent bag damage. No special hazardous storage requirements apply under normal conditions. |
| Shelf Life | Shelf life is indefinite when stored in a cool, dry, shaded area away from heat and direct sunlight. |
Hanwha LLDPE 4300N is processed as a butene-based linear low-density polyethylene in blown film extrusion for industrial liners and heavy-duty packaging. Melt temperature at the die adapter is maintained between 190°C and 210°C, measured with an immersion thermocouple on a 65 mm grooved-feed single-screw extruder with L/D 30:1. Melt pressure upstream of the screen changer is typically kept below 35 MPa. Die gap is set between 1.8 mm and 2.5 mm. Narrow die gaps below 1.5 mm generate sharkskin surface roughness because wall shear stress rises above the critical shear stress of the resin. Production lines running 4300N at high output often dose a fluoropolymer-based polymer processing additive at 400–800 ppm by weight into the hopper. Without the processing aid, die-lip deposit can appear within 4–6 h of continuous extrusion. The deposit creates weld lines and changes film thickness distribution. Die-lip cleaning intervals are documented when thickness variation exceeds ±5% of nominal, measured by ASTM D2732. Regrind addition is limited to 15% by weight because higher levels create gel specks from thermally crosslinked material. Moisture content above 0.05% in regrind produces bubbles and surface defects. Batch dryers are set at 60–70°C for 2 h only when reclaim contains surface water.
Bubble geometry is controlled by blow-up ratio and frost-line height. A BUR of 2.0:1 to 2.5:1 is used for balanced film properties in heavy-duty liners. Frost-line height is set between 250 mm and 500 mm above the die face. Lower frost-line heights freeze orientation earlier and reduce dart impact, measured by ASTM D1709 Method A. Higher frost-line heights increase transverse-direction tear but reduce bubble stability when ambient air temperature swings beyond 5°C during a shift. Dual-lip air-ring cooling is adjusted to keep the frost-line sharp and stable. Process records include film thickness, haze per ASTM D1003, and coefficient of friction per ISO 8295. Terminal products include liners for granular fertilizers, compostable waste, wood pellets, and mineral fillers. Typical film thickness is 60–120 µm for industrial liners and 120–180 µm for heavy-duty construction waste sacks.
LLDPE 4300N is used in extrusion lamination and coextrusion as the sealant layer of multi-material packaging. Seal initiation temperature is normally verified by ASTM F88 on the finished laminate rather than on the monolayer. A sealant layer thickness of 20–30 µm is selected when the print web is biaxially oriented polypropylene or polyester. Seal bar temperature is set between 115°C and 125°C. Dwell time is 0.3–0.5 s. Seal pressure is 0.3 MPa. Under these conditions measured heat seal strength is typically above 8 N/15 mm. The limiting factor for high-line-speed pouch conversion is hot tack. Hot tack is tested by ASTM F1921. Sealant layers with insufficient hot tack fail during gusset folding, spout insertion, and vertical form-fill-seal jaw release. The failure mode is not a weak final seal but a reopening of the still-molten seal before crystallization is complete.
Food-contact compliance is based on 21 CFR 177.1520 for olefin polymers and EU Regulation No 10/2011 with an overall migration limit of 10 mg/dm². The converter must obtain the manufacturer’s lot-specific food-contact declaration before using the film in direct food contact. Some additive packages used for ultraviolet stabilization or slip modification are not food-contact listed. A non-food grade formulation must not be substituted without re-qualifying the laminate structure. Solvent-based ink systems require the sealant film to pass residual solvent migration testing such as ISO 11890-2 if the laminate is used for high-temperature fill. Terminal products are stand-up pouches, frozen-food bags, cereal liners, and snack packaging.
Cast film conversion of Hanwha LLDPE 4300N requires different thermal control than blown film because the melt curtain is quenched on a chilled roll. The extruder melt temperature is maintained between 220°C and 240°C to reduce draw resonance. The flat die gap is set between 0.4 mm and 0.8 mm. Chill roll temperature is held at 18–25°C. Chill roll temperatures above 30°C create blocking on the reel because the crystalline domains remain soft after winding. Chill roll temperatures below 10°C generate moisture condensation and optical haze. Draw ratio between die exit and chill roll is kept below 4:1 to avoid periodic thickness oscillation known as draw resonance. At draw ratios above 4.5:1, cyclic gauge bands can appear along the web. The band spacing is typically 30–80 cm and is measured with an online beta gauge. When draw resonance appears, the corrective action is to reduce draw ratio or raise melt temperature.
Pallet stretch film uses a three-layer coextrusion structure. LLDPE 4300N is often the core layer, while the cling layer contains polyisobutylene at 1–3 wt% or ethylene vinyl acetate at 3–5 wt%. The slip or release layer includes erucamide or silica antiblock at 500–2,000 ppm. Film thickness is typically 15–23 µm for hand wrap and 23–35 µm for machine wrap. Puncture resistance is tested by ASTM D5748. Cling force is measured by ASTM D5458. The finished film is converted into pre-stretched hand rolls and machine rolls. Pre-stretching at 100–250% elongation increases load retention but reduces puncture resistance. Terminal use includes pallet unitization, appliance wrapping, and silage bale wrapping.
Agricultural silage packaging with LLDPE 4300N requires ultraviolet stabilizers to prevent chain scission during months of outdoor exposure. Hindered amine light stabilizers are compounded at 0.1–0.5 wt%. A benzotriazole UV absorber is included at 0.05–0.15 wt% when the film is exposed to high-intensity sunlight. The film is produced as a blown film with thickness 25–50 µm for bale wrap. BUR is set at 2.0:1 to 2.5:1. The film must retain mechanical integrity after 6–12 months of direct outdoor exposure. Failure appears as transverse splits during bale storage and handling. Tensile strength after artificial weathering is measured by ISO 527-3 after 2,000 h of accelerated exposure in a xenon-arc apparatus according to ISO 4892-2. A minimum retained tensile strength of 80% of the original value is commonly specified. Oxygen transmission rate of silage film is measured by ISO 15105-2. The oxygen transmission rate is relevant to anaerobic fermentation. If the film is punctured, oxygen ingress leads to yeast and mold growth. Puncture resistance is measured by ASTM D5748. Terminal products are round bale silage wrap, maize silage bags, and greenhouse covering. Greenhouse film grades require a minimum service life of 3–5 years and different light diffusion additives, which are not part of the standard 4300N formulation. Published data for this specific configuration is limited; a UV-stabilized masterbatch must be qualified on the target extrusion line.
Form-fill-seal sacks for granular fertilizers, polymer pellets, and powdered construction chemicals use LLDPE 4300N tubular blown film at 80–120 µm thickness. The tubular film enters an FFS machine where the bottom seam is sealed, product is filled, and the top seam is closed. The film must have enough bubble stability to maintain thickness uniformity in the tubular form. BUR is set between 1.8:1 and 2.2:1. A gusset is formed after flattening. Seal bars on the FFS unit are set to 120–140°C. Seal pressure is 0.4–0.6 MPa. Dwell time is 0.6–1.2 s. The finished sack is drop-tested from 1.2 m on concrete with a 25 kg fill. Acceptance is no rupture or product loss.
Machine-direction tear resistance can drop as drawdown increases. If the film is drawn too high, Elmendorf tear value per ISO 6383-2 drops below 30 mN and sacks split along the machine direction during dropping. Adding LDPE at 10–20 wt% increases melt strength and improves seal uniformity but reduces dart impact, measured by ASTM D1709 Method A. The converter must balance these properties for each sack dimension. Terminal products include fertilizer sacks, resin pellet bags, and dry mortar packaging.
Protective masking film for stainless steel sheets, painted metal panels, and polished plastic parts uses LLDPE 4300N as the bulk film after corona treatment. Corona discharge must raise the surface energy of the film from the initial 31–34 mN/m to at least 38–42 mN/m, measured by ISO 8296. A lower surface energy causes insufficient anchorage of the pressure-sensitive adhesive. The film is produced by cast or blown extrusion at 30–60 µm thickness. The adhesive coating is applied by a comma coater or a slot-die coater. The adhesive is typically acrylate-based. The coated film is wound on a paper core and slit to width. Peel adhesion is measured by ASTM D3330. A peel force of 1.5–3.0 N/25 mm is common for surface protection film. Erucamide slip additives at levels above 500 ppm bloom to the surface and reduce adhesive anchorage after aging. Silicone-based processing aids can leave a low-energy surface layer. Terminal products are temporary protective film for architectural panels, appliance covers, and electronic housing parts.
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HANWHA LLDPE 4300N is a linear low-density polyethylene blown-film resin produced by Hanwha TotalEnergies Petrochemical Co., Ltd. The grade carries a nominal melt flow rate of 1.0 g/10 min under ISO 1133-1:2022 at 190 °C and 2.16 kg, and a nominal density of 0.918 g/cm³ under ISO 1183-1. The linear architecture gives a relatively flat shear viscosity response compared with high-pressure LDPE; this has direct consequences for die pressure, motor load, and bubble geometry in blown-film conversion. Applications include agricultural silage covers, lamination base films, consumer packaging, and industrial liners, where the resin is used either neat or as a blend component with LDPE, metallocene LLDPE, or HDPE. Because film properties are thickness-dependent and influenced by blow-up ratio, frost-line height, and additive formulation, pellet-classification data do not replace finished-film testing. Processors should establish internal acceptance limits using the applicable test methods and lot-specific certificates of analysis before converting 4300N into regulated or high-performance packaging.
The defining specification values are melt flow rate and density; those parameters place the grade relative to high-pressure LDPE and C8-mLLDPE. The melt flow rate is measured under ISO 1133-1:2022 at 190 °C with a 2.16 kg load. Density is determined on compression-moulded specimens according to ISO 1183-1. Table 1 compares the nominal values with reference resin classes. Melt flow rate and density alone do not capture molecular weight distribution or comonomer distribution, which influence optics, tear balance, and seal behaviour. Lot-specific certificates may report additional parameters such as ash content, volatiles, and gel count; these should be reviewed when the resin is used in thin-gauge or high-speed converting.
| Parameter | HANWHA LLDPE 4300N | High-pressure LDPE reference | C8-mLLDPE reference |
|---|---|---|---|
| Melt flow rate (190 °C, 2.16 kg) per ISO 1133-1:2022 | 1.0 g/10 min | 0.2–2.5 g/10 min | 0.8–1.2 g/10 min |
| Density per ISO 1183-1 | 0.918 g/cm³ | 0.917–0.924 g/cm³ | 0.915–0.920 g/cm³ |
| Long-chain branching character | Low | High | Very low |
The reference values are representative and are not a substitute for a lot-specific certificate. The principal distinction is the low long-chain branching content of LLDPE 4300N, which reduces melt elasticity and increases the tendency for die-lip instability if die gaps are set too narrow.
Under oscillatory shear rheometry according to ISO 6721-10, the complex viscosity of LLDPE 4300N at 190 °C is lower than that of a high-pressure LDPE of comparable melt flow rate at angular frequencies above 100 rad/s. The storage modulus curve shows a less pronounced plateau, reflecting low long-chain branching. This rheological signature means the resin generates less shear thinning and therefore higher die lip shear stress at a given output. On grooved-feed single-screw extruders with 24:1 to 30:1 L/D, the result is often higher barrel pressure and greater motor torque than with LDPE at the same mass throughput. Some lines reduce screw speed by 10% to 20% to keep melt temperature below 220 °C. The barrel set point is typically flat to reverse: 170–185 °C in the feed section, 190–200 °C in the compression section, and 195–205 °C at the adapter and die. These are starting conditions; line diameter, output, and internal bubble cooling load shift the required profile.
Bubble stability in LLDPE 4300N is governed by blow-up ratio, frost-line height, and cooling air distribution. At blow-up ratios of 2.0:1 to 3.0:1, the film maintains a stable neck and acceptable thickness variation on standard dies. Below 2.0:1, bubble breathing and edge wrinkles can increase; above 3.0:1, dart impact in the transverse direction may decline. Frost-line height is often maintained between 6 and 10 die diameters. On internal bubble cooling lines, the cooling air flow is adjusted to stabilize bubble symmetry and prevent frost-line oscillation. Die gaps from 1.5 mm to 2.5 mm are used because the low shear-thinning behaviour raises die pressure in narrow gaps. A die gap below 1.2 mm increases die lip shear stress and can initiate shark-skin melt fracture. If shark-skin appears, the first corrective step is to increase die temperature and reduce output by 5–10%; a fluoroelastomer processing aid masterbatch at 400–1000 ppm may then be added.
For a film thickness of 40 µm, mechanical performance should be characterized according to ISO 527-3 or ASTM D882 for tensile properties, ASTM D1709A for dart impact, and ASTM D1922 for Elmendorf tear. Published data for this exact grade under all thickness and orientation conditions is limited, so converter-specific trial data remain necessary. Resins with a density near 0.918 g/cm³ generally provide higher dart impact than LDPE of equivalent melt flow rate at the same thickness, but they may exhibit higher haze than C8-mLLDPE. Blown film is anisotropic; tensile strength at break, elongation at break, and tear strength are reported as machine-direction and transverse-direction values. The tear ratio shifts with blow-up ratio and frost-line height. As blow-up ratio increases from 2.0:1 to 3.0:1, MD tear often decreases while TD tear increases, moving the balance toward unity. This directional behaviour is critical in heavy-duty sacks and agricultural films where tear propagation must be resisted in both directions.
Gel formation is a critical quality parameter in thin films. The resin should be processed with a melt temperature no higher than 220 °C, and start-up purges should avoid prolonged residence time. On lines with high temperature and oxygen exposure, gel particles may appear as unfused or oxidized domains. The gel count is often evaluated by visual inspection or optical scanning of 100 cm² film samples; acceptance limits vary by end use. If gel levels increase, the die temperature and barrel profile should be reduced before changing resin lots, because inadequate purging after a resin change can mimic resin-related gel defects.
Downgauging a packaging film from 50 µm to 25 µm creates property trade-offs that separate LLDPE 4300N from other resin classes. The linear resin retains a higher fraction of its original dart impact than high-pressure LDPE when thickness is reduced because of differences in tie-molecule concentration and crystallite structure; however, film optics and hot-tack performance may be lower than those of a C8-mLLDPE. Minimum performance should be established on the finished film using ASTM D1709A for dart impact, ASTM D1922 for tear resistance, and ISO 527-3 for tensile strength and elongation. If the film must exhibit haze below 10% and gloss above 60 at 60° measured by ASTM D1003 and ASTM D2457, LLDPE 4300N may require blending with an optical-grade LDPE or metallocene LLDPE. The seal initiation temperature and hot-tack force should be measured according to ASTM F1921 and ASTM F88/F88M when the application involves form-fill-seal or lamination. Published data for this specific grade under these conditions is limited; converter-generated curves are required for reliable downgauging decisions.
Compared with high-pressure LDPE, LLDPE 4300N produces higher dart impact and puncture resistance but lower melt strength, which must be compensated by bubble calibration and higher blow-up ratio. Compared with C8-mLLDPE, the grade may produce lower hot-tack strength and higher seal initiation, while generating lower extrusion pressure and lower melt fracture risk at the same die gap. Those differences arise from comonomer type and molecular architecture rather than from melt flow rate alone. The selection between 4300N, LDPE, and C8-mLLDPE should therefore be based on the governing film property: dart impact, optics, seal performance, or extrusion line motor load.
In coextruded film structures, the layer distribution of LLDPE 4300N is usually adjusted through the screw speed and die lip gap of the dedicated skin or core extruder. The melt flow rate of 1.0 g/10 min means that the resin can be coextruded with LDPE skins without causing gross viscosity mismatch, but the die pressure differential may require a thicker die gap on the LLDPE layer. Layer thickness ratios between LLDPE 4300N and a high-pressure LDPE skin are often set from 70:30 to 80:20 to maintain dart impact while improving opticals and melt strength. The final layer distribution is verified by thickness profile measurement using ISO 4593 or equivalent optical density methods. If the LLDPE layer is too thick relative to the LDPE skin, bubble stability can suffer; if too thin, the film loses puncture resistance. This balance is particularly important in heavy-duty packaging where the LLDPE layer carries most of the stress.
When additives are introduced into LLDPE 4300N, the loading must be evaluated against film friction, blocking, and optical requirements. Slip masterbatches containing erucamide are used at 500–1500 ppm to reduce the coefficient of friction measured by ISO 8295. Surface bloom is time-dependent; coefficient of friction is typically measured after conditioning for 24 h at 23 °C and 50% RH. Antiblock masterbatch based on synthetic silica or natural silica is used at 1000–5000 ppm; loadings above 5000 ppm can increase haze and lower gloss as measured by ASTM D1003 and ASTM D2457. Fluoroelastomer processing aids are used in the 400–1000 ppm range to suppress melt fracture; excessive loading can cause die lip build-up and surface defects. In masterbatch-intensive formulations, dispersion is controlled by screen packs of 60/80/100 mesh, but fine screens increase backpressure and melt temperature. The extruder should be monitored for pressure rise over time because gel build-up reduces effective filtration area.
The resin should not be melt-blended with high-acid copolymers such as ethylene-acrylic acid in direct contact with steel surfaces unless a corrosion-resistant screw and barrel are specified. When LLDPE 4300N is coextruded with EVOH or polyamide, adhesive tie layers are required and the melt temperature should remain below 220 °C to limit odour and gel formation. Post-consumer recycled LDPE or LLDPE streams should be pre-dried if moisture content exceeds 0.1% by weight; drying at 80 °C for 4 h is common for regrind with high surface moisture. Calcium carbonate in recycled film increases melt viscosity and die pressure; processors should use 80 mesh or finer screening and monitor the carbonate content by ISO 3451-1 ash testing.
Food-contact status is determined by the finished article, not by the base resin alone. The olefin polymer may be evaluated under FDA 21 CFR 177.1520 for food-contact use, with migration limits and conditions of use defined by the end user. In the European Union, the final film must comply with EC 1935/2004 and the relevant plastics regulation, while resin and additive suppliers should provide declarations under REACH 1907/2006. Heavy metal restrictions are checked against RoHS 2011/65/EU Annex II, with lead, mercury, cadmium, and hexavalent chromium thresholds applied to homogeneous materials. Because the grade may be supplied as virgin resin without country-specific food-contact certification, converters must request a certificate of compliance and ensure that all masterbatches, processing aids, and regrind streams also meet the same regulatory status. No single test method covers all food-contact requirements; migration testing is performed according to EN 1186 or equivalent national methods using food simulants and the intended temperature/time conditions.
For agricultural silage covers and greenhouse films, the density of 0.918 g/cm³ supports flexibility at low outdoor temperatures, while the 1.0 g/10 min melt flow rate allows stable bubble formation on large dies. On a 1200 mm die with a double-lip air ring, the film is typically run at a blow-up ratio of 2.5:1 to 3.0:1 and a lay-flat width of 1500 mm to 2000 mm; actual width depends on bubble geometry and collapsing frame design. In lamination film lines, adhesion after corona treatment is evaluated by surface tension measurement according to ISO 8296, with values maintained above 38 mN/m for solventless lamination. If the film is used in freezer packaging, low-temperature puncture and seal strength are assessed according to ASTM F1306 and ASTM F88/F88M; published data for this specific LLDPE grade under those conditions is limited, so converter-specific trials remain necessary. Grade 4300N differs from higher-density polyethylene film grades by retaining a lower modulus and higher puncture tolerance, but it should not be selected where high stiffness or high heat-deflection temperature is the governing requirement.
