| HS Code | 914291 |
| Product | SABIC LLDPE 222WF |
| Polymer Type | Linear Low Density Polyethylene (LLDPE) |
| Comonomer | Butene |
| Melt Flow Rate 190 C 2 16kg | 2.2 g/10min |
| Density | 0.922 g/cm³ |
| Melting Point | 124 °C |
| Vicat Softening Temperature | 102 °C |
| Brittleness Temperature | -70 °C |
| Tensile Strength At Yield | 12 MPa |
| Tensile Strength At Break | 30 MPa |
| Elongation At Break | 700% |
| Escr F50 10 Igepal | >1000 hours |
As an accredited SABIC LLDPE 222WF factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | SABIC LLDPE 222WF is supplied in 25 kg polyethylene bags, palletized and wrapped for safe transport and storage. |
| Container Loading (20′ FCL) | SABIC LLDPE 222WF is loaded as a 20' FCL, typically in palletized bags, ensuring stable, efficient, and safe sea transport. |
| Shipping | SABIC LLDPE 222WF is shipped as free-flowing thermoplastic pellets in 25 kg bags, jumbo bags, or bulk containers. Keep packaging dry, protected from direct sunlight, and away from excessive heat. It is not classified as dangerous goods under standard transport regulations, so standard clean, covered freight is suitable. |
| Storage | Store SABIC LLDPE 222WF in a cool, dry, clean, and well-ventilated area, away from direct sunlight, heat sources, and strong oxidizers. Keep original containers tightly closed to prevent moisture and dust contamination. Avoid outdoor storage or standing on wet floors. Maintain moderate temperatures to preserve material quality and prevent degradation or deformation. |
| Shelf Life | SABIC LLDPE 222WF has a long shelf life when stored in dry, cool conditions away from direct sunlight and contamination. |
SABIC LLDPE 222WF is a butene linear low density polyethylene film resin with a nominal melt flow index of 2.0 g/10 min under 190°C/2.16 kg and a nominal density of 0.922 g/cm³. The application scenarios below are confined to converted film structures in which butene LLDPE provides a measurable balance between dart impact, elongation at break, and seal integrity. Where published data for a specific formulation are limited, the limitation is stated explicitly.
Formulating heavy-duty shipping sacks and FIBC inner liners from SABIC LLDPE 222WF requires simultaneous control of high-stalk bubble stability and dart impact retention. A representative formulation meters 70–85 wt% 222WF with 15–30 wt% LDPE carrying a melt flow index of 0.25–0.5 g/10 min at 190°C/2.16 kg. The LDPE fraction raises melt strength and stabilises the frost line on blown-film lines running die gaps of 1.8–2.2 mm and blow-up ratios of 2.5:1 to 3.2:1. Production equipment typically includes a single-screw extruder with L/D 25:1 to 30:1, barrier flight sections, a dual-lip air ring, and internal bubble stabilisation. Melt temperatures are held between 195°C and 220°C; frost line height is set at 6–8 die diameters. Under these conditions, 100–150 µm film is evaluated against ASTM D1709-16a method A for dart drop and ASTM D1922-15a for Elmendorf tear propagation. For food-contact liner structures, the final film must meet FDA 21 CFR 177.1520(c) and Regulation (EU) 10/2011 Annex I with overall migration ≤ 10 mg/dm². Non-food industrial sacks are assessed against Directive 94/62/EC Annex II heavy-metal limits and REACH SVHC restrictions. Terminal products include 50 kg resin bags, mineral and feed sacks, FIBC inner liners, and drum liners.
The critical processing conflict in heavy-duty sack production is the interaction between melt strength and dart impact. When 222WF is run neat, the bubble may oscillate at blow-up ratios above 3.0:1 because the butene LLDPE fraction has insufficient strain hardening at low shear. The conventional remedy is LDPE addition, but the LDPE component also dilutes the dart impact contribution of the LLDPE fraction. Converters therefore read block force and frost line position every 15–20 min during start-up and correlate them with offline dart drop measurements. Failure modes recorded on production lines include draw resonance at the frost line, portline fold, and uneven gauge bands resulting from air ring balance drift. For sacks that require stackability under compression, the choice of 100–150 µm gauge and 2.5:1 BUR produces higher machine-direction modulus than the same gauge at 3.2:1 BUR. Thermal stabilisation of the film is confirmed by melt flow drift below 0.2 g/10 min between raw and reclaimed edge trim, per ISO 1133-1:2022 procedure A. When the sack is intended for food-contact liner service, the end product must also pass organoleptic testing under ISO 13302:2003 for taint transfer before release. A process limitation is observed when LDPE content exceeds 30 wt%: dart drop declines and tear anisotropy increases, while LDPE below 15 wt% can produce bubble oscillation on high-stalk lines.
On retail conversion lines running 12–30 µm T-shirt bag and produce-roll structures, 222WF is processed either neat or with 10–20 wt% LDPE to improve bubble stability and reduce melt fracture at high line speeds. A representative formulation combines 90–95 wt% 222WF with 2–5 wt% colour masterbatch and, where additional slip is required, 1–3 wt% slip/antiblock masterbatch; some converters add up to 10 wt% post-industrial LLDPE reclaim without losing bag-machine seal strength. The film is extruded at die gaps of 1.2–1.8 mm and blow-up ratios of 2.5:1 to 4.0:1, with melt temperatures of 180–210°C. High-stalk bubble geometry is preferred because it reduces gauge spread before conversion into back-to-back heat-sealed bags on rotary bag machines running 80–120 cycles/min. Seal bar temperature is maintained between 130°C and 165°C, and perforation wheel pressure is set to avoid tearing through the seal. Compliance for food-contact produce bags and deli bags follows FDA 21 CFR 177.1520(c) and Regulation (EU) 10/2011, with specific migration testing conducted under the test conditions assigned to the actual food simulant and storage time. For refuse sacks and bin liners, mechanical evaluation uses ISO 527-3 tensile elongation and ISO 7765-1 free-falling dart impact. Terminal products include retail T-shirt bags, produce rolls, deli bags, bin liners, and consumer refuse sacks. The lower gauge limit for continuous conversion without gel-related pinholes is approximately 10–12 µm; below that, screen pack upgrades to 100/120/100 mesh and melt temperatures at the upper end of the range are required.
Mulch and silage-cover films made with 222WF are compounded with stabiliser masterbatches rather than relying on intrinsic UV resistance. A representative mulch formulation contains 85–95 wt% 222WF, 5–12 wt% LDPE of 0.2–0.7 g/10 min MFI, 3–6 wt% HALS-based UV stabiliser masterbatch, and 1–3 wt% carbon black masterbatch for light-exclusion mulching. For silage covers, 222WF is used at 75–90 wt% with the balance being LDPE and, where sealing tack is required, 2–5 wt% polyolefin plastomer. The downstream blown-film process typically uses internal bubble cooling, die gaps of 1.7–2.2 mm, blow-up ratios of 2.8:1 to 3.5:1, and melt temperatures of 190–210°C. Edge-fold and centre-fold configurations are produced in-line; UV-stabilised film is tested for retained elongation after exposure under ISO 4892-2 cycle 1 and ASTM G154 Cycle A. Conformity for mulch films is assessed against EN 13206:2017 where applicable, including thickness uniformity and mechanical properties after artificial weathering. Terminal products include horticultural mulch film, silage covers, greenhouse ground covers, and protective over-wraps for baled fibre. Operational boundary: 222WF-based silage covers are not direct replacements for high-tack EVA or metallocene sealant films where oxygen barrier and cling force above 1.5 N/25 mm are required; published data for this specific configuration is limited, so converters should verify sealing performance on the actual baler table.
For coextruded lamination sealant webs paired with biaxially oriented PET or BOPP print webs, 222WF is positioned as the sealant layer in 20–40 µm structures. A representative sealant formulation comprises 70–90 wt% 222WF, 10–20 wt% LDPE, and 0–15 wt% polyolefin plastomer to lower seal initiation temperature. The plastomer fraction is adjusted only when converters require seal initiation below 110°C; otherwise, the butene LLDPE fraction maintains thermal stability and controls seal bar contamination. Downstream processing may occur on cast film lines with chill roll temperatures of 18–24°C, air gap settings of 150–250 mm, and corona treatment to 42–46 dyn/cm before lamination with solvent-free polyurethane adhesives. Blown-film sealant webs are also used when higher stiffness is needed, with die gaps of 1.5–2.0 mm and blow-up ratios of 2.0:1 to 3.0:1. The laminated structure must comply with FDA 21 CFR 177.1520(c) and Regulation (EU) 10/2011, with migration testing on the finished laminate using food simulants assigned to the packaged product category; for fatty foods, simulant D1 or D2 tests are performed under 10–30 days at 20–60°C. Terminal products include form-fill-seal pouches, stand-up pouches, gas-flushed pillow packs, and lidding films. Processing limitation: the sealant web should not be used in retort applications above 121°C unless the entire laminate is re-qualified, because the softening point of 222WF constrains seal integrity under thermal load.
Melt blending post-industrial LLDPE/LDPE reclaim with 222WF is used to reduce virgin resin demand in refuse sacks and industrial liners. A representative ratio is 60–80 wt% 222WF to 20–40 wt% post-industrial PE recyclate, with reclaim MFR controlled between 1.5 g/10 min and 3.5 g/10 min to avoid viscosity mismatch. The reclaim stream is pre-dried to <250 ppm moisture when ambient relative humidity exceeds 60%, and it is melt-filtered through screen stacks of 100–150 µm to remove gel particles and unmelts. Downstream blown-film processing uses vented single-screw extruders of L/D 30:1 to 34:1, die gaps of 1.8–2.4 mm, blow-up ratios of 2.0:1 to 3.0:1, and melt temperatures of 195–215°C. Because recyclate addition raises gel counts, film is tested per ASTM D7310-20 for gel classification and ASTM D882-18 for tensile elongation. Refuse sacks manufactured from this blend are evaluated under EN 13592:2017 for puncture resistance and seam strength, while REACH obligations follow EC 1907/2006 and the packaging minimisation requirements follow Directive 94/62/EC. Terminal products include municipal refuse sacks, garden waste sacks, and industrial liners.
The operational bottleneck in recyclate blending is not viscosity average but contaminant-driven screen pressure. A 100–150 µm melt filter assembly is selected because finer mesh reduces output and raises melt temperature excessively, while coarser mesh allows gels that can reduce film puncture. Pressure differential across the screen pack should stay below 35–50 bar; above that limit, back-flush frequency increases and line output falls. Converters also blend the recyclate as a side stream rather than as a masterbatch, because side-stream metering with loss-in-weight feeders preserves the molecular weight distribution of 222WF. The film’s tensile impact is checked per ISO 8256 method A, and tear strength is checked per ISO 6383-2 with specimens cut in both machine and transverse directions. Because post-industrial reclaim may contain calcium carbonate from earlier film production, ash content is measured per ISO 3451-1 and held below 5 wt% to avoid fouling of the die lip. Above 40 wt% recyclate, transverse direction tear strength decreases and odour risk increases; below 20 wt%, the circular economic benefit is marginal. Published data for this specific 222WF and post-industrial reclaim grade combination is limited, so incoming lot compatibility tests are required.
Surface protection films for polished metal sheet, painted components, and glass panels are cast from 222WF at 30–70 µm thickness. A representative formulation uses 75–90 wt% 222WF, 10–25 wt% LDPE for controlled stiffness and unwind quietness, and 2–5 wt% tackifier masterbatch where self-adhesion is required without a separate adhesive coating. The cast-film process uses a polished chill roll held at 20–25°C, air-knife pinning, die gap of 0.8–1.2 mm, line speeds that place the film under draw ratios of 3:1 to 6:1, and corona treatment to 42–48 dyn/cm for ink or adhesive lamination. For electronic and appliance applications, the film is assessed under RoHS 2011/65/EU Annex II restricted substances and REACH candidate list obligations; low-molecular-weight additives must not migrate to polished surfaces during storage. Terminal products include temporary protective film for stainless steel sheet, coil processing, painted metal panels, and flat glass. Process boundary: 222WF-based protective films are not suitable for exterior exposure beyond 6 months unless additional UV stabiliser masterbatch is included, and tackifier content above 5 wt% can cause transfer marks on clear substrates under elevated warehouse temperatures.
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SABIC LLDPE 222WF is a linear low density polyethylene film resin based on a butene comonomer. The nominal density is 0.922 g/cm³ when measured according to ISO 1183-1:2019, and the melt flow rate is 2.0 g/10 min at 190 °C under 2.16 kg load when measured according to ISO 1133-1:2022. The combination of moderate density and general-purpose flow directs the grade toward air-cooled blown film processing for thicknesses between 15 µm and 120 µm. Typical conversion applications include collation shrink, garment bags, carrier bags, freezer film, lamination webs, agricultural liners, and overwrap. The grade is not intended for cast film, extrusion coating, blow molding, or injection molding. The base grade is supplied with a phenolic/phosphite antioxidant stabilization system; slip and antiblock behavior are controlled by downstream masterbatch addition rather than by a heavy built-in additive package. For direct food contact, the resin is intended to be used within the olefin polymer provisions of EU Regulation 10/2011 and FDA 21 CFR 177.1520, provided the finished film passes the relevant global migration or food-type extraction tests. The product is not formulated for continuous immersion in aromatic solvents, strong oxidizing acids, or high-energy gamma irradiation above 25 kGy without application-specific qualification.
Processing behavior is dominated by the linear chain architecture, which produces lower elongational viscosity than long-chain branched LDPE and a more sharply defined solidification front. On a single-screw extruder of 75 mm diameter and 30:1 L/D, a typical barrel profile from zone 1 to adapter is 180 °C, 200 °C, 210 °C, 215 °C, and 210 °C, with the die body held at 210 °C. The recommended melt temperature window for 222WF is 190 °C to 220 °C. Operation below 175 °C produces insufficient homogenization and raises shear stress at the die lip, leading to sharkskin melt fracture; operation above 240 °C initiates oxidative chain scission and gel formation. The die gap should be maintained between 1.5 mm and 2.0 mm. Gaps below 1.2 mm increase shear rate and melt pressure; gaps above 2.5 mm allow excessive sag and reduce bubble stability. Blow-up ratios between 2.0:1 and 3.0:1 are typical. At blow-up ratios above 3.5:1, hoop stress exceeds melt tension, causing bubble oscillation and gauge variation. Frost-line height is normally set between 1.5 and 2.5 die diameters; a frost line set too low quenches the inner bubble surface and increases haze, while a frost line set too high increases crystallinity non-uniformity and reduces dart impact. Screen packs of 60/80/100 mesh are commonly used. Pressure drop across the screen should be monitored because linear grades are more sensitive to screen blockage than branched LDPE. When melt pressure before the screen changer approaches the extruder manufacturer’s limit, the pack should be replaced rather than increasing barrel temperatures. On coextruded lines, the melt temperature of 222WF should be matched within 10 °C of adjacent skin layers to avoid interfacial flow instability and layer thickness variation. Dual-lip air rings with lower inner-lip velocity are preferred over single-lip air rings, because excessive inner-lip air velocity deforms the bubble near the die and causes frost-line oscillation.
In the solid state, film properties are evaluated after conditioning at 23 °C and 50 % relative humidity under ISO 291:2008. Tensile measurements under ISO 527-3:2018 on 40 µm blown film at a 2.5:1 blow-up ratio typically show a distinct yield stress in both machine and transverse directions before cold drawing. Supplier technical data for this density class report elongation at break values above 800 %; the actual value depends on die gap, frost-line height, and gauge uniformity. Puncture resistance is measured under ASTM D1709A. Typical dart impact values for unpigmented 25 µm film fall between 90 g and 110 g, but the range should not be used for lot acceptance because variations in masterbatch particle size, recycled content, and extrusion temperature shift the failure mode from ductile to brittle. Haze under ASTM D1003 is generally below 15 % for unpigmented 40 µm film, and 45° gloss under ASTM D2457 is typically between 50 and 60. Seal initiation is lower than that of a typical LDPE of similar density; minimum seal temperature should be determined by ASTM F88 on the final film because film thickness, dwell time, and seal bar pressure alter the seal-strength curve. For 25 µm monolayer film, published data often place the minimum seal temperature near 105 °C at 0.5 N/15 mm, but this value is not a resin constant. The low-temperature brittleness of the polyolefin matrix is suitable for frozen-food packaging, although published data for this specific configuration is limited; tests should follow ISO 8570 or the converter’s internal cold-drop protocol. Blocking and coefficient of friction depend on migratory additives. Films containing no slip additive can develop blocking after pallet compression for 72 h at 40 °C; addition of erucamide or oleamide slip agents at 500 ppm to 2,000 ppm reduces surface friction but requires storage time for complete migration.
The substitution of 222WF for general-purpose LDPE requires re-tooling of the die gap and air-ring setup rather than a direct drop-in replacement. Compared with LDPE of similar density and melt flow, the butene LLDPE has a narrower molecular weight distribution and no long-chain branching; the melt strength is lower, so bubble stability decreases at high blow-up ratios, while drawdown to thin gauges improves. LDPE lines using die gaps of 0.8 mm to 1.0 mm often develop sharkskin when running 222WF because the shear stress at the die lip is too high; widening the die gap to 1.5 mm to 2.0 mm and raising the die temperature by 10 °C typically stabilizes the melt. Optical properties of the LLDPE film are usually higher than LDPE at the same gauge, but the film may feel stiffer and less crystalline at low frost-line heights. Compared with a C₆-LLDPE of equivalent 0.922 g/cm³ density and 2.0 g/10 min melt flow, the butene grade generally displays lower dart impact and tear strength because hexene comonomer creates longer branches that improve tie-molecule connectivity. The difference is most pronounced in heavy-duty sacks, freezer film, and high-abuse packaging where ASTM D1709A dart impact and ISO 6383-2:1983 Elmendorf tear are specification-critical. In applications dominated by optics, sealability, and stiffness, 222WF can be selected instead of a C₆ grade, but the converter must verify that the reduced dart impact performance remains above the customer’s minimum. The linear butene resin also exhibits less shear thinning than branched LDPE; therefore, high-shear Maddock-style mixing sections and narrow adapters can generate a larger melt-temperature rise at high screw speeds. Screw designs with a moderate compression ratio of 2.5:1 to 3.0:1 and a barrier section are recommended. The use of recycled LDPE in a blend with 222WF reduces melt stability and film optics; the maximum recycled content should be set by the final application’s dart impact specification and gel count, not by a universal percentage.
On production-scale blown film lines, three process defects are observed with sufficient frequency to require explicit control limits. First, sharkskin melt fracture appears when melt temperature is below 175 °C, output is too high for the die gap, or the die lip has carbonized residue; it is corrected by raising die-zone temperature to 220 °C, reducing screw speed, or cleaning the die lip. Second, bubble instability occurs at blow-up ratios above 3.5:1 or when the air-ring inner-lip velocity exceeds the bubble’s melt tension; it appears as vertical bubble oscillation and gauge bands. The corrective action is to lower blow-up ratio to 2.5:1 or to switch to a dual-lip air ring designed for LLDPE. Third, gel formation increases after resin is processed above 240 °C or after prolonged hold-up in the adapter and die; gels are visible as small clear or oxidized inclusions and reduce puncture resistance under ASTM D1709A. Lines with long residence times should reduce barrel temperatures during shutdown to 150 °C and purge with LDPE before stopping. When film is used for lamination, corona treatment should be controlled to 38 mN/m to 42 mN/m wetting tension; higher treatment levels increase adhesion but can create surface oxidation that raises blocking after rewind storage. When high-slip and antiblock masterbatches are added, dispersion should be verified by measuring coefficient of friction under ISO 8295:1995 after 24 h of migration; poor dispersion creates streaks and variations in seal strength. The use of reclaimed film edge trim above 20 % may cause visible gels and reduced tear strength unless the reclaim stream is clean, melt-filtered, and uniformly blended.
Regulatory acceptability for olefin polymers requires migration testing of the finished package because conversion conditions alter specific migration of processing aids and additive masterbatches. EU Regulation 10/2011 and FDA 21 CFR 177.1520 supply the compliance framework; the grade itself is not intentionally formulated with perfluoroalkyl substances, phthalate plasticizers, cadmium, lead, or mercury. Compliance with REACH Regulation 1907/2006 and the RoHS Directive 2011/65/EU must be verified against the lot-specific safety data sheet. 222WF is not intended for continuous service above 80 °C, hot-fill containers, retort packaging at 121 °C, or direct prolonged contact with aromatic hydrocarbons, chlorinated solvents, or strong oxidizing acids because such conditions can plasticize or degrade the polyolefin matrix. For agricultural film requiring multi-season UV stability, the base resin must be modified with a UV stabilizer masterbatch validated under ISO 4892-2 accelerated weathering. Unprocessed pellets should be stored below 50 °C and 60 % relative humidity; moisture pickup is usually negligible, but condensation on cold pellets can create film defects if hopper warm-up is not used. The grade should not be exposed to direct sunlight for extended storage because UV oxidation of the pellet surface can shift initial color and gel count. Processors adding post-consumer recycle to 222WF must confirm food-contact compliance of the entire blend under the relevant food-contact regulation, as the presence of recycled material may introduce contaminants not covered by the base resin certification.
