| HS Code | 440307 |
| Density | 0.927 g/cm³ |
| Melt Flow Index | 2.7 g/10min (190°C/2.16kg) |
| Tensile Strength At Yield | 11 MPa |
| Elongation At Break | 800 % |
| Flexural Modulus | 300 MPa |
| Hardness | 55 Shore D |
| Vicat Softening Point | 100 °C |
| Melting Point | 122 °C |
| Brittleness Temperature | -70 °C |
| Environmental Stress Crack Resistance | >50 h |
As an accredited HANWHA LLDPE 3127D factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | HANWHA LLDPE 3127D is packaged in 25 kg net polyethylene-lined bags, palletized and shrink-wrapped for safe transport. |
| Container Loading (20′ FCL) | Loading a 20′ FCL of HANWHA LLDPE 3127D with secure palletized bags, clean container, and protection from moisture and contamination. |
| Shipping | HANWHA LLDPE 3127D is a non-hazardous linear low-density polyethylene resin. Ship as plastic granules in 25kg bags, bulk bags, or silo trucks. No UN classification required. Keep dry, avoid excessive heat, and protect from contamination. Standard dry cargo handling applies. |
| Storage | Store HANWHA LLDPE 3127D in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep containers tightly sealed to prevent moisture or contamination. Avoid stacking excessively to prevent deformation. Maintain good housekeeping and keep material away from strong oxidizing agents. Follow local regulations and handle with care to minimize dust and static buildup. |
| Shelf Life | Shelf life is typically 12 months if stored in original, dry conditions away from heat, sunlight, and moisture. |
In heavy-duty sack and FIBC inner-liner conversion of HANWHA LLDPE 3127D, the resin is typically run as the primary layer or as a 100 wt% monolayer formulation at blow-up ratios between 2.5:1 and 3.2:1. The resin’s melt strength is supported by blending with 0–10 wt% of a low-melt-index LDPE on grooved-feed extruders with screw L/D ratios of 30:1 to 38:1. Critical process parameters include melt temperatures of 195–215 °C, die gaps of 1.6–2.4 mm, internal bubble cooling, and output rates of 6–10 kg/h per millimeter of die circumference. For non-dangerous goods FIBC construction, compliance is evaluated under ISO 21898:2004, with mechanical acceptance tested per ASTM D1709-16a, ASTM D882, and ASTM D1922. The formulation includes 0.5–1.5 wt% of a 20 wt% silica-based antiblock masterbatch and 0.05–0.1 wt% of an erucamide slip masterbatch. Edge trim and start-up scrap are reintroduced at up to 20 wt% of throughput; beyond this level, bubble diameter variation increases because the melt strength of reprocessed low-density material is lower. Terminal products include FIBC inner liners, valve sacks for polymer granulate, drum liners, and heavy-duty fertilizer sacks; gauge uniformity must be maintained below ±5% because dart impact drops sharply when film thickness falls below 50 µm.
The use of HANWHA LLDPE 3127D in agricultural cover films changes the critical control point from dart impact to stabilizer migration kinetics and light transmission retention. Compliance for covering films in the European Economic Area is benchmarked against EN 13206:2017, and weathering resistance is commonly verified by accelerated cycling per ISO 4892-2 or ASTM G154. In three-layer silage cover structures, the core layer may contain 70–85 wt% 3127D, 15–25 wt% LDPE, and 0.4–1.0 wt% of a HALS masterbatch, while a skin layer incorporates 0.5–1.5 wt% of a 10–20 wt% antiblock masterbatch to limit blocking on aged film. The three-layer coextrusion line operates with layer ratios of 1:3:1 or 2:3:1, die gaps of 1.7–2.2 mm, and a frost-line height set between 6 and 9 times die diameter. Terminal products include greenhouse side sheets, silage bags, silage bale cover film, and tunnel row covers; field experience indicates that HALS loading below 0.3 wt% produces a measurable loss in residual tear strength after one season in high-UV regions.
For 25 µm frozen food packaging converted from HANWHA LLDPE 3127D, gauge uniformity is governed by die-lip clearance and melt fracture control at haul-off speeds above 60 m/min rather than by melt temperature alone. The application is regulated by FDA 21 CFR 177.1520 for olefin polymers, with migration obligations under EU No 10/2011 and overall migration testing per EN 1186-1:2002 at 10 mg/dm². A typical formulation contains 85–95 wt% 3127D, 5–15 wt% LDPE, 1.0–2.0 wt% of a 10–20 wt% antiblock masterbatch, and 0.05–0.10 wt% of erucamide slip. The blown-film process uses die gaps of 1.2–1.8 mm, blow-up ratios of 2.0:1 to 2.8:1, and melt temperatures of 190–210 °C. Post-treatment surface energy is maintained at 38–42 mN/m for printability. Terminal products include frozen vegetable bags, IQF food pouches, and ice cream overwrap. Because this resin does not provide a useful oxygen barrier, modified-atmosphere packaging must employ a coextruded EVOH or similar barrier layer; neat LLDPE structures are suited to non-barrier applications only.
| Application segment | Primary standard | Secondary test method | Key condition |
|---|---|---|---|
| Heavy-duty sacks / FIBC inner liners | ISO 21898:2004 | ASTM D1709-16a | Dart impact test at ambient temperature |
| Agricultural cover films | EN 13206:2017 | ISO 4892-2 | Accelerated weathering exposure |
| Frozen food packaging | FDA 21 CFR 177.1520 | EU No 10/2011 | Overall migration 10 mg/dm² |
| Extrusion coating on woven PP | ISO 21898:2004 | ASTM F88/F88M-21 | Seal strength on laminated structure |
| Collation shrink hoods | ISO 14616:1997 | ASTM D2732 | Shrink tension / free shrink |
| Cast stretch hood film | ASTM D5458-95 | ASTM D882 | Cling peel and tensile strength |
Extrusion coating of HANWHA LLDPE 3127D onto woven polypropylene sack fabric requires melt temperatures above 300 °C to promote fiber penetration, and this narrows the stable processing window for a butene-based LLDPE. Melt temperature must be held within ±5 °C of target when operating above 300 °C; lower deviation reduces fiber penetration and peel strength, while higher deviation increases carbonyl formation in the coating. The coated structure is assessed under ISO 21898:2004 for FIBC-type constructions, seal strength by ASTM F88/F88M-21, and adhesion peel by ASTM D1876-08. In this process, 70–100 wt% 3127D is combined with 0–30 wt% LDPE to reduce neck-in, and 0.02–0.05 wt% of a fluoroelastomer polymer processing aid is added to delay melt fracture on high-speed coating lines. The slot die is set at 0.8–1.2 mm, the air gap is held between 150 mm and 250 mm, chill roll temperature is maintained at 15–25 °C, and line speed ranges from 80 m/min to 200 m/min. Coating thickness is controlled between 10 µm and 25 µm, with peel strength typically specified above 1.0 N/15 mm. Terminal products include coated woven polypropylene fertilizer sacks, flour valve sacks, and laminated tarpaulin base stock. In production scale, die-lip oxidation at these melt temperatures can reduce adhesion after extended campaigns, so die-cleaning intervals and purge compounds are specified to limit carbonyl formation.
When HANWHA LLDPE 3127D is converted into collation shrink hood stock, the critical property is not dart impact but the machine-direction-to-transverse-direction shrink tension balance. Compliance for heat-shrinkable PE films is established through ISO 14616:1997 and ASTM D2732, with tensile properties measured by ISO 527-3. A typical starting formulation blends 50–70 wt% 3127D with 30–50 wt% LDPE, and slip/antiblock additives are held below 0.05 wt% to avoid surface roughening that would reduce optical quality and printing adhesion. The blown-film process runs at a die gap of 1.0–1.5 mm, a blow-up ratio of 3.0:1 to 4.0:1, and a frost-line height set at 12–18 times die diameter to promote orientation. Shrink activation occurs in tunnel systems at 140–180 °C for residence times of 2–4 s. Terminal products include printed collation shrink bundling film for beverage multipacks, shrink hoods for white goods, and shrink film replacement of corrugated trays. Because excessive shrink force can deform thin-walled primary packages, free shrink is typically targeted at 10–20% in each direction at 120 °C rather than at the maximum attainable values.
Cast stretch hood conversion of HANWHA LLDPE 3127D is a shallow formulation zone in which the main process variable is cling-agent exudation, not bubble stability or frost-line control. Compliance for food-contact pallet wrap, where relevant, refers to 1935/2004/EC and downstream national measures; mechanical properties are tested by ASTM D882, and cling behavior is measured by ASTM D5458-95. A standard formulation uses 100 wt% 3127D, or a blend of 80–90 wt% 3127D with 10–20 wt% of a higher-melt-index LLDPE, plus 1.0–2.0 wt% of a polyisobutylene cling masterbatch and 0.5–1.0 wt% of a silica antiblock masterbatch. The cast film line runs with a chill roll temperature of 15–25 °C, melt temperatures of 230–260 °C, and a die gap of 0.7–1.1 mm, producing film thicknesses from 20 µm to 50 µm. Terminal products include pallet stretch hood film, reinforced stretch hood liners, and protective transit wrap for appliance pallets. Cling agent exudation accelerates above 30 °C storage, so pallet wrap should be stored below that threshold to avoid telescoping and cling loss.
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Manufactured as a butene-copolymer linear low-density polyethylene resin, HANWHA LLDPE 3127D is specified for blown film extrusion operations requiring a controlled balance between melt-flow stability and abuse resistance. The nominal density is 0.918 g/cm³ when determined by ASTM D1505 or ISO 1183-1, and the nominal melt flow rate is 1.0 g/10 min under a 2.16 kg load at 190°C as described in ASTM D1238 and ISO 1133-1:2022. These values identify a moderately viscous film extrusion grade with the melt strength typical of a butene-based LLDPE. The resin is supplied in pellet form with a slip and antiblock package incorporated during manufacturing; specific additive loadings are lot-dependent and appear on the certificate of analysis rather than as a single guaranteed value.
The base polymer contains short-chain branches derived from 1-butene, which disrupt ethylene chain packing sufficiently to reduce density but do not generate the tie-molecule concentration associated with hexene- or octene-based linear low-density polyethylene. Consequently, HANWHA LLDPE 3127D occupies a position between low-density polyethylene and metallocene LLDPE in film toughness and clarity. Film processors should not treat the density and melt flow rate as a complete product specification. The grade must be evaluated against final film test methods applicable to the intended package: tensile properties under ASTM D882 or ISO 527-3, dart impact under ASTM D1709 method A or ISO 7765-1, Elmendorf tear under ASTM D1922 or ISO 6383-2, haze under ASTM D1003, and gloss at 45° under ASTM D2457. Published data for this specific configuration is limited; property values found in generic LLDPE trade tables may not reflect the exact lot, additive package, or film fabrication conditions of HANWHA LLDPE 3127D.
The principal difference between HANWHA LLDPE 3127D and HANWHA LLDPE 3227D lies in melt flow rate. 3227D is typically specified at 2.0 g/10 min under the same 190°C/2.16 kg load, allowing faster extrusion and lower head pressure in thin-gauge films but reducing bubble stability at high blow-up ratios. In contrast, 3127D at 1.0 g/10 min delivers higher melt strength and better retention of bubble geometry on tall tower lines; the trade-off is higher motor load at fixed screw speed and a narrower output window before melt fracture appears at the die lip. When 3127D is compared with a metallocene LLDPE of equivalent density and melt index, the butene-based molecular architecture of 3127D produces lower dart impact and tear propagation resistance than hexene- or octene-based metallocene grades. It also generates lower die pressure, reduced motor load, and improved tolerance to long-chain branching variations in post-industrial recycled content. For older monolayer blown film equipment using single-lip air rings, this processing advantage may outweigh the film-performance advantage of metallocene LLDPE.
In comparison with low-density polyethylene, HANWHA LLDPE 3127D exhibits higher dart impact and puncture resistance at equivalent gauge but lower melt elongation and less resistance to bubble sag. Blends of 3127D with LDPE are therefore used to increase toughness while retaining bubble control. In comparison with high-density polyethylene film grades with a density from 0.945 g/cm³ to 0.955 g/cm³, 3127D has lower stiffness and higher water vapor transmission but better tear and impact resistance. The “D” suffix in the grade designation indicates a differentiated additive package rather than a change in the base polymer; processors evaluating 3127D against a non-D grade should compare coefficient of friction and blocking behavior under ASTM D1894 and ASTM D3354 rather than only density and melt flow rate.
On production-scale blown film lines, HANWHA LLDPE 3127D is processed on single-screw extruders with barrel L/D ratios of 24:1 to 30:1 and barrier screws incorporating mixing pins or Maddock sections. A die gap of 1.5 mm to 2.5 mm is commonly used; narrower gaps below 1.2 mm are possible but raise the risk of melt fracture and die-lip buildup when slip additives bloom at the exit. Melt temperature measured at the adapter is maintained between 180°C and 215°C. At temperatures above 220°C, the slip-additive migration rate increases and the resin may begin to evolve lower-molecular-weight fractions, causing visible smoke and reduced film haze performance. Blow-up ratio is typically set from 2.0:1 to 3.0:1; at the upper end of this range, bubble stability must be supported by a dual-lip air ring or internal bubble cooling because butene LLDPE has lower melt tension than LDPE. Frost line height is normally held between 2 and 4 times the die diameter, but the exact setting depends on target film gauge and cooling air dew point. Screw speed is limited by bubble instability rather than plasticating capacity; on a 90 mm extruder with a 250 mm die, stable output typically falls within the equipment manufacturer’s published envelope for 0.918 g/cm³ butene LLDPE.
Slip-agent bloom in HANWHA LLDPE 3127D is time-dependent. Film produced immediately after extrusion exhibits a higher coefficient of friction than film conditioned for 24 h to 72 h at 23°C and 50% RH. Coefficients of friction should be measured under ASTM D1894 or ISO 8295 only after this maturation period. Corona treatment, when used for print adhesion, is typically adjusted to a wetting tension of 38 mN/m to 42 mN/m as measured by ISO 8296; overtreatment beyond 46 mN/m can oxidize the slip layer and reverse the lubricating effect. In coextruded structures, 3127D is commonly placed in the core or inner layer, while a metallocene skin provides seal performance and a higher-clarity surface.
Capillary rheometry under ASTM D3835 or ISO 11443 is used when line operators need to compare lot-to-lot viscosity at shear rates of 100 s⁻¹ to 1000 s⁻¹. The melt flow rate of 1.0 g/10 min is a single-point viscosity index and does not describe the shear-thinning behavior that controls die pressure. Butene-based LLDPE grades with a broad molecular weight distribution typically exhibit moderate shear thinning at high screw speeds, which reduces shear heating in the metering section but also results in lower melt strength than high-pressure LDPE. The die-lip region on a blown film die is the critical shear-rate zone; melt viscosity changes caused by additive-package variation should be checked against the certificate of analysis limits rather than against generic LLDPE values.
Substitution of HANWHA LLDPE 3127D for a conventional tubular LDPE in a heavy-duty sack or liner formulation changes the mechanical response at low gauge. LDPE provides high melt strength and easy bubble control, but its dart impact and puncture resistance are lower than those of a butene LLDPE of equivalent density. In three-layer coextrusion, replacement of an LDPE-rich core with 3127D may permit gauge reduction, but the magnitude is lot-dependent and must be established by trial on the target line. The bubble becomes more sensitive to ambient air currents, and frost line height is raised to restore stability. Seal initiation temperature is lowered relative to LDPE-rich structures, but the hot-tack window may narrow because butene LLDPE does not sustain the same sealing-force plateau as high-pressure LDPE. Processors should verify seal strength on a temperature-gradient sealing machine using ASTM F88 and hot-tack using ASTM F1921.
At high addition levels, mixing 3127D with LDPE at 70:30 or 80:20 by weight is common to combine LLDPE toughness with LDPE bubble stability. The exact ratio is determined by die diameter, blow-up ratio, and frost line height. High-shear dispersion is not required; the components are dry-blended before entering the hopper or metered separately into the throat. If recycled edge trim is re-introduced above 30 wt%, screen pack pressure should be monitored because slip-agent accumulation on screen meshes can cause a pressure rise before the breaker plate. In heavy-duty sack production, film thickness is typically in the range of 80 µm to 120 µm, and the package is evaluated for dart impact, Elmendorf tear, and seal strength rather than for optical properties alone. The choice between 3127D and an HDPE-rich structure is controlled by stiffness and moisture-barrier requirements; 3127D does not provide the moisture-barrier performance of high-density polyethylene.
Regulatory compliance for HANWHA LLDPE 3127D is conditioned on the specific lot, additive package, and conversion conditions. The base polyolefin is typically covered by the food-contact provisions of 21 CFR 177.1520 for olefin polymers when furnished under a letter of guarantee; however, the final package must be tested for overall migration under EU Regulation (EU) No 10/2011 or FDA 21 CFR 176.170 where applicable. Processors should request the current regulatory information sheet from Hanwha and should not infer that compliance with one standard implies compliance with all regional food-contact or medical packaging requirements. For non-food industrial applications, the grade is generally assessed against REACH and RoHS restricted substances; confirmation is obtained through the supplier’s declaration, not from the product designation alone.
Shutdown and grade-change procedures with HANWHA LLDPE 3127D require attention to melt-temperature limits and residence time. The resin is purged at the lowest practical melt temperature between 180°C and 200°C to avoid degrading slip additives. HDPE or low-MI LLDPE purge compounds are preferred over LDPE because the higher melt strength assists in displacing material from the die lip. On a 70 mm extruder, complete displacement of 3127D from the barrel and die is typically confirmed after 5 to 8 times the barrel capacity has been extruded; color or additive masterbatch can be added to the purge to mark the transition. If the line is idle for more than 20 min at full temperature, the screw should be turned at 5 rpm to 10 rpm to prevent additive decomposition at the barrel wall. Oxygen exposure at high temperature accelerates formation of oxidized gel particles; maintaining a nitrogen-purged hopper is not required for monolayer film, but it reduces moisture pickup when high-humidity regrind is used.
Process limitations include the avoidance of amine-based antifog or antistatic concentrates at elevated let-down ratios above the concentrate supplier’s recommendation, because interaction with the incorporated slip package can produce plate-out on the die lip. If plate-out is observed as a white deposit at the die exit, the die-lip temperature is lowered by 5°C to 10°C and the melt temperature is adjusted toward 190°C. Fluoropolymer processing aids are permitted only at the concentration specified by the masterbatch supplier; excessive processing aid can alter the surface chemistry of the formed film and reduce coefficient of friction below specification. The addition of regrind from 3127D film requires controlled particle size and feed consistency. If the regrind fraction exceeds 20 wt%, a crammer feeder or densification step may be required to prevent feed starvation. Feed starvation causes screw throughput variation and destabilizes bubble thickness by altering melt pressure at the die.
In agricultural film applications, HANWHA LLDPE 3127D is used in monolayer silage covers and greenhouse films where toughness at low gauge is required. Film thickness is typically 40 µm to 100 µm, and the film is evaluated for tensile properties under ISO 527-3 and tear resistance under ISO 6383-2. Because butene LLDPE has lower long-term thermal stability than octene-based LLDPE, intensive solar exposure requires UV stabilizers; the base resin does not provide UV resistance unless a stabilized formulation is specified. In frozen food packaging, low-temperature toughness is evaluated at -20°C using dart impact and seal strength after conditioning. In blown film lines with internal bubble cooling, the lower melt strength of 3127D relative to LDPE requires reduced internal air volume and careful control of the lower nip height to prevent bubble lunging. The operational window for frost line height is often narrower than that of LDPE because the lower melt strength reduces the margin between unstable stretch and thermal quench.
