| HS Code | 886764 |
| Productname | Titanvene BPD3220 |
| Manufacturer | Lotte Chemical |
| Polymertype | Linear Low Density Polyethylene (LLDPE) |
| Meltflowindex | 2.0 g/10min (190°C, 2.16 kg) |
| Density | 0.920 g/cm³ |
| Meltingpoint | 122 °C |
| Vicatsofteningpoint | 98 °C |
| Tensilestrengthatyield | 11 MPa (MD) |
| Tensilestrengthatbreak | 20 MPa (MD) |
| Elongationatbreak | 650% |
| Dartimpactstrength | 150 g (F50, 30 µm film) |
| Filmhaze | 12% (30 µm film) |
As an accredited Lotte Chemical LLDPE Titanvene BPD3220 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Lotte Chemical LLDPE Titanvene BPD3220 is supplied as pellets in 25 kg polyethylene bags, palletized and wrapped for safe transport. |
| Container Loading (20′ FCL) | 20′ FCL container loading of Lotte Chemical LLDPE Titanvene BPD3220: 25kg bags on pallets, shrink-wrapped, stably packed, approximately 20 metric tons per container. |
| Shipping | Lotte Chemical LLDPE Titanvene BPD3220 is supplied as free-flowing pellets in 25 kg bags or jumbo bags. It ships in clean, dry containers via sea or truck. Keep sealed, protected from moisture, heat, and direct sunlight. Not classified as dangerous goods, but handle gently to avoid bag damage. |
| Storage | Store Lotte Chemical LLDPE Titanvene BPD3220 in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture absorption and contamination. Avoid stacking excessively high or exposing to mechanical damage. Under proper conditions, the material remains stable with a long shelf life. |
| Shelf Life | Shelf life is generally indefinite when stored in original packaging, protected from heat, moisture, and direct sunlight. |
Blown-film conversion of Lotte Chemical LLDPE Titanvene BPD3220 for bakery and produce packaging operates most predictably when the extruder barrel profile is held between 175°C and 210°C and incoming silo-to-silo melt flow rate variation is kept within ±0.2 g/10 min under ASTM D1238 at 190°C/2.16 kg. In food-contact structures, BPD3220 commonly occupies 70–85 wt% of the formulation, with high-pressure LDPE blended at 15–30 wt% for bubble stability and improved optical consistency; 100% BPD3220 is run only where maximum downgauging and dart impact resistance outweigh melt-strength limitations. The production line uses a grooved-feed single-screw extruder with L/D 24:1 to 30:1, a die gap of 1.8–2.5 mm, a blow-up ratio of 2.0–2.8, and frost-line height set at 6–10 die diameters. Corona treatment to 38–40 mN/m is applied to the print side, while slip and antiblock masterbatch at 0.5–2.0 wt% prevents blocking in roll form. Finished product types include pinched-bottom bread bags, perforated produce roll bags, counter bags, and over-wrap for bunched leafy vegetables. Compliance testing is conducted under FDA 21 CFR 177.1520 and EU Regulation EU 10/2011, with the overall migration limit below 10 mg/dm²; converters must also verify REACH SVHC screening when export destinations require declarations.
| Standard | Scope | Limit or test condition | Finished product relevance |
|---|---|---|---|
| FDA 21 CFR 177.1520 | Olefin polymers intended for food contact | Extractables limits as specified by food type | Bakery bags, produce bags, over-wrap |
| EU 10/2011 | Plastic materials and articles in contact with food | Overall migration below 10 mg/dm² | EU food film, printed or unprinted |
| EC 2023/2006 | Good manufacturing practice for food-contact materials | Documented traceability and taint control | All BPD3220 food-grade webs |
| REACH (EC) 1907/2006 | Substances of very high concern and Annex XVII restrictions | SVHC concentration below 0.1 wt% | Export film, converter declarations |
Chill-roll temperature below the crystalline nucleation window governs haze development and controls polyisobutylene cling additive migration in BPD3220-based cast stretch film. Hand-grade pallet wrap formulations use BPD3220 at 70–95 wt%, metallocene LLDPE at 5–30 wt%, and polyisobutylene cling additive at 0.5–2.0 wt%; machine-grade films may reduce PIB to 0.3–1.0 wt% and add polypropylene or HDPE at 2–5 wt% to suppress blocking. The cast line is configured with a 90 mm or 105 mm extruder, L/D 30:1, a barrier screw with Maddock mixing section, melt temperature of 240–260°C, die gap 0.4–0.8 mm, air gap 20–50 mm, and chill roll water temperature 18–25°C. Edge trim is reintroduced through a trim blower at 5–8 wt% unless optical defects exceed the accepted quality limit. Finished product types include hand stretch wrap, machine stretch wrap, pre-stretched film, and agricultural bale wrap. Compliance testing uses ASTM D5458 for cling, ASTM D5748 for puncture resistance, ASTM D1894 for coefficient of friction, and ISO 527-3 for tensile properties. Neck-in is the primary process conflict; on a 2,000 mm die, neck-in of BPD3220-rich cast film can exceed 100 mm per edge unless PPA processing aid is dosed at 200–500 ppm or die lip temperature is raised within the melt-temperature boundary. Draw resonance appears at line speeds above 400–500 m/min when melt strength is insufficient, generating gauge bands that violate ±2% thickness tolerance. Pre-stretch units running 150–250% elongation require film with ultimate elongation above 400% and puncture energy above 0.15 J in ASTM D5748.
Greenhouse and low-tunnel film production with BPD3220 is driven by weathering resistance rather than organoleptic migration. A typical three-layer blown film uses a core layer of 50–70 wt% BPD3220, 20–40 wt% LDPE, 0–10 wt% EVA, and UV/HALS masterbatch addition of 0.5–1.0 wt% in the skin layers; anti-drip and IR modifiers are introduced as separate concentrates at 0.3–0.8 wt%. The agricultural film line uses a die gap of 1.8–2.2 mm, blow-up ratio 2.0–2.5, melt temperature 190–210°C, and bubble stabilization by an external cooling ring plus internal bubble cooling on high-output towers. Compliance under EN 13206:2017 requires a declared service-life classification before UV exposure; tested film must retain tensile stress at break above 50% of the initial value after artificial weathering cycles defined by the standard. Finished product types include greenhouse covers, low tunnels, and silage clamp covers. The resin does not provide UV resistance without additive incorporation; if HALS concentrate is omitted or unevenly distributed, chalking and machine-direction tensile loss can occur before 12 months in southern European light conditions. Pre-drying of hygroscopic anti-drip masterbatch should be performed at 60–80°C for 4 h when moisture exceeds 0.05 wt%; otherwise lens-shaped bubbles appear in the film as visible fish-eyes.
On heavy-duty sack lines running BPD3220, the operating window is bounded by melt fracture on one side and bubble instability on the other. The formulation for industrial liners and construction sacks uses 80–100 wt% BPD3220, 0–20 wt% recycled LLDPE/LDPE, and carbon black masterbatch at 2–4 wt%; calcium carbonate filler may be added at 5–20 wt% for cost-sensitive refuse sacks but reduces dart impact by roughly 10–20% per 10 wt% filler. Process conditions on a low-stalk blown film line are die gap 2.0–2.8 mm, blow-up ratio 2.5–3.5, melt temperature 190–220°C, and frost-line height 8–12 die diameters. High back pressure at the screen pack—typically 60–90 bar—indicates fines or gel accumulation; a 100/250/100 mesh screen pack with 30% open-area filtration is used to protect the die. Melt fracture in the form of sharkskin appears below 190°C or above 2.5 m/min die-lip speed unless die-lip PPA or a wider die gap is applied. Bubble flutter is controlled by an internal bubble stabilizer and by adding 10–20 wt% high-pressure LDPE when the blow-up ratio exceeds 3.0. Compliance testing for refuse sacks references EN 13592:2017 for dimensions and drop resistance, while mechanical properties are measured by ASTM D882 and dart impact by ASTM D1709. Finished product types include construction rubble sacks, concrete curing liners, industrial drum liners, household refuse sacks, and temporary site sheeting.
Substitution of BPD3220 for high-pressure LDPE in extrusion lamination is justified when heat-seal strength and puncture resistance carry the specification, but the converter must accept a narrower neck-in window. A sealant web for paper/aluminium/poly structures uses 70–90 wt% BPD3220 and 10–30 wt% LDPE; prime lamination of a foil-based sachet may run 100% BPD3220 with PPA at 200–500 ppm. The extrusion coating line operates with melt temperature 290–320°C, die gap 0.6–0.8 mm, air gap 150–200 mm, and line speed 80–150 m/min. Adhesion to primed film or foil relies on ozone treatment at 0.5–1.5 kW output and a 15–25 mm corona gap; backing roll pressure is set to 2.5–5.0 N/mm². Finished product types are snack food sachets, laminated pouch sealant layers, and frozen food lamination films. Food-contact compliance is evaluated under FDA 21 CFR 177.1520 and EU 10/2011; extractables testing uses food simulants appropriate to the non-sealant substrate. The primary process limitation is oxidative gel formation at melt temperatures above 320°C; a hard block of 320°C must be enforced at the adapter and die zones. Neck-in on a 1,200 mm coating die can exceed 150 mm with 100% LLDPE if PPA is not used or if die temperature is below 300°C.
Low-temperature puncture resistance becomes the decisive variable when BPD3220 is converted into film for frozen vegetables, ice cream, or bagged meat portions stored at −20°C or below. Blown-film structures for this end-use typically use 70–90 wt% BPD3220 with 10–30 wt% LDPE or metallocene LLDPE to increase seal initiation and hot-tack, plus slip/antiblock masterbatch at 0.5–2.0 wt%. The process uses a die gap of 1.6–2.4 mm, blow-up ratio 2.0–2.6, melt temperature 190–220°C, and secondary cooling to reach a film temperature below 35°C at the collapsing frame before gusseting. Seal jaw temperature is set to 120–150°C depending on sealing dwell of 0.3–0.8 s; hot-tack strength is verified with ASTM F1921 or seal strength with ASTM F88. Compliance for food contact requires FDA 21 CFR 177.1520 for the base olefin polymer and EU 10/2011 overall migration below 10 mg/dm². Finished product types include pillow bags for frozen vegetables, zipper freezer bags, bag-in-box bladders for ice cream mix, and gusseted poultry bags. The operational boundary is that standard BPD3220 film retains dart impact at freezer temperature but its machine-direction tear propagation resistance is lower than octene-based LLDPE or LLDPE/HDPE blends; converters experiencing MD tear at low temperature should not exceed 30 wt% LDPE dilution or should coextrude with a higher-toughness skin layer. Published data for this specific configuration is limited.
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Lotte Chemical Titanvene BPD3220 is a butene-copolymer linear low-density polyethylene extrusion grade intended for conventional blown film conversion. The resin is released against a nominal melt mass-flow rate of 2.0 g/10 min determined under ISO 1133-1:2022 at 190 °C/2.16 kg and a nominal density of 0.922 g/cm³ under ISO 1183-1:2019. Pellets are supplied as virgin polymer without slip or antiblock additives; surface friction in converted film is controlled through downstream masterbatch addition, with let-down ratio dictated by the masterbatch supplier and target coefficient of friction. Primary application areas include general-purpose packaging films, carrier bags, garment bags, household liners, lamination films, and industrial wrapping. In comparison with high-pressure low-density polyethylene of similar melt index, BPD3220 has a more linear main chain and produces higher tensile strength at equal thickness, which permits downgauging in selected bag constructions. However, melt tension is lower, and bubble stability must be controlled through die gap, blow-up ratio, and air-ring configuration. All lot-release values are governed by the current manufacturer certificate of analysis; this document is not a purchase specification.
In BPD3220, the comonomer is 1-butene. At a fixed nominal density of 0.922 g/cm³, a butene LLDPE requires a higher molar concentration of short-chain branches than a 1-hexene or 1-octene LLDPE to reduce crystallinity to the same level; however, the ethyl branches introduced by butene are shorter and less efficient at forming tie molecules between adjacent lamellae. The practical consequence is that BPD3220 typically exhibits lower dart impact and puncture resistance than hexene-copolymer LLDPE of equal melt index and density when fabricated under identical conditions. In exchange, the butene architecture tends to produce lower extruder head pressure at constant output, reduced melt viscosity sensitivity to temperature, and easier bubble control on small extruders with limited cooling capacity. This trade-off is structural. For thin-gauge bags and general-purpose packaging, lower raw-material cost and adequate mechanical performance may satisfy converter requirements, provided that the specification for dart impact and tear is set to the butene-copolymer baseline rather than a metallocene or hexene-copolymer baseline.
| Release parameter | Method and condition | Typical release basis |
|---|---|---|
| Melt mass-flow rate | ISO 1133-1:2022, 190 °C/2.16 kg | 2.0 g/10 min |
| Density | ISO 1183-1:2019, 23 °C | 0.922 g/cm³ |
| Melting peak temperature | ISO 11357-3:2018, 10 K/min | Supplier lot certificate |
| Tensile stress at yield | ISO 527-1:2019, 50 mm/min | Supplier lot certificate |
| Dart impact | ASTM D1709A, 25 µm film | Supplier lot certificate |
| Puncture resistance | ASTM D5748-19 | Supplier lot certificate |
On a three-layer blown film line with a 55 mm grooved-feed extruder at 28:1 L/D, a 200 mm bottom-fed spiral die with 1.4 mm die gap, and a dual-lip air ring, BPD3220 is commonly processed as the core layer at 60–80 wt%. Melt temperatures of 195–210 °C and blow-up ratios of 2.2:1 to 2.8:1 are used because this combination limits bubble flutter and maintains gauge variation below ±8% as measured by capacitance thickness scanning. Frost-line height is set at 5 to 8 times die diameter. At blow-up ratios exceeding 3.0:1 with a die gap of 1.0 mm, bubble instability and edge-wave distortion become more likely, particularly when the air ring is operated with high primary airflow. Under such conditions, machine-direction gauge variation increases and the bubble surface becomes sensitive to ambient draft, which can force line speed reduction.
In side-weld carrier bag and vest bag lines, BPD3220 is introduced to reduce gauge while preserving load-bearing capacity. Because the tensile yield of LLDPE is higher than that of high-pressure LDPE at equivalent thickness, converter qualification commonly evaluates a shift from a heavier LDPE film to a lighter BPD3220 structure. The downgauging limit is determined not by tensile yield alone but by Elmendorf tear and dart impact, both of which decline with gauge reduction. A converter trial therefore measures the proposed structure under ASTM D1709A and ISO 6383-2:1983 before replacing LDPE. Seal initiation and hot tack are not intrinsic resin values; they depend on sealant-web architecture, sealing time, pressure, and cooling rate. A heat-seal profile generated under ASTM F2029-21 is the appropriate lot-to-lot comparison tool. In coextruded films, BPD3220 is rarely used as the sealant layer because its seal initiation is higher than metallocene polyethylene plastomers; instead, it is placed in the core or sub-skin to supply stiffness and drawdown. Compared with a high-clarity LDPE surface layer, BPD3220 will produce higher haze unless a separate skin layer is used. The linear backbone also reduces extrusion coating neck-in performance; BPD3220 is not a drop-in replacement for autoclave LDPE in high-speed extrusion coating without process modification.
Extrusion lamination trials with BPD3220 are generally limited to low-demand structures because of the resin’s higher neck-in and lower drawdown relative to autoclave LDPE. When the resin is processed through a coat-hanger die at 205–225 °C melt temperature with a chill roll at 15–25 °C, adhesion to primed polyester or to aluminum foil is dependent on melt oxidation history and substrate pretreatment. Published data for this specific configuration is limited; converter trials should determine whether the required drawdown ratio is feasible with the available die-to-nip distance and air gap. Because the polymer has a narrower molecular weight distribution than autoclave LDPE, edge-bead formation and draw resonance can become pronounced above a critical drawdown ratio that is equipment-specific.
In 25 µm monolayer film blown at 2.5:1 blow-up ratio and 200 mm frost-line height, the physical properties of BPD3220 are orientation-dependent. Machine-direction Elmendorf tear is typically lower than transverse-direction tear because linear polyethylene chains align strongly in the take-up direction. This anisotropy is common to film-grade LLDPE and can be shifted by changing blow-up ratio and frost-line height. Dart impact under ASTM D1709A decreases rapidly when frost-line height is reduced below 5 die diameters because the quench rate increases crystalline orientation and reduces tie-molecule concentration in the surface layers. Puncture resistance measured under ASTM D5748-19 is more sensitive to gauge and comonomer type than to extrusion temperature within the standard LLDPE processing range. A lot-to-lot variance of ±5% in dart impact is not unusual if die gap, air-ring condition, and pellet temperature are not tightly controlled. Current BPD3220 certificates of analysis may not publish all film performance values; converter film testing under ASTM D1709A, ASTM D5748-19, and ISO 6383-2:1983 is therefore required for specification-based comparisons.
In grooved-feed single-screw extruders with a 30:1 L/D screw, BPD3220 is generally processed at a melt temperature of 210–220 °C to discharge surface melt fracture at the die lip. Back pressure of 150–250 bar is observed depending on screw design and output; pressure in the upper half of that range is associated with a melt-temperature rise of 3–6 °C due to viscous dissipation. Onset of sharkskin melt fracture at the die exit is controlled by die-lip shear rate, not by resin melt flow rate alone. Increasing die gap from 1.0 mm to 1.5 mm reduces shear rate sufficiently to suppress sharkskin in most thin-gauge LLDPE film. If melt fracture persists, the converter should examine die-lip geometry, heater uniformity, and melt framing before assigning the defect to resin. Prior to dry blending with slip or antiblock masterbatch, the resin must be purged thoroughly; additive masterbatches based on low-melting ethylene vinyl acetate may lower melt viscosity and alter melt fracture onset. Fluoropolymer processing aids can reduce die deposit and stabilize the bubble, but they require pre-dispersed masterbatch and may extend purge time.
Titanvene BPD3220 is not formulated for long-term ultraviolet exposure. Agricultural film and greenhouse cover applications therefore require the addition of hindered amine light stabilizers and carbon black or titanium dioxide UV barrier packages at the converter. Masterbatch let-down ratios must be validated by accelerated weathering according to ISO 4892-3:2024 or ASTM G154-23; unstabilized BPD3220 should not be used for outdoor service. The grade is also not designed for food-contact use at elevated temperature unless the specific lot certificate confirms compliance with 21 CFR 177.1520(c) and relevant migration limits under EU 10/2011. Converters must conduct end-use compliance verification because the final structure, additive package, and converting conditions determine the regulatory status of the finished film.
