| HS Code | 938811 |
| Density | 0.90 g/cm³ |
| Melt Flow Rate | 3.0 g/10 min (230°C, 2.16 kg) |
| Tensile Yield Strength | 35 MPa |
| Tensile Elongation At Yield | 12% |
| Flexural Modulus | 1400 MPa |
| Izod Impact Strength Notched 23 C | 3.0 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 110°C |
| Vicat Softening Temperature | 155°C |
| Rockwell Hardness | R95 |
| Water Absorption | <0.01% |
| Bulk Density | 0.50 g/cm³ |
| Thermal Conductivity | 0.17 W/m·K |
As an accredited Globalene (Lee Chang Yung) PP Homopolymer factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Globalene PP Homopolymer is packaged in 25 kg woven polypropylene bags, sealed to ensure purity and safe handling. |
| Container Loading (20′ FCL) | 20′ FCL container loading of Globalene PP Homopolymer in 25kg bags, palletized, securely stowed for safe transport. |
| Shipping | Globalene (Lee Chang Yung) PP Homopolymer is shipped as non-hazardous polypropylene resin pellets, typically in 25 kg bags or bulk containers. Protect from moisture, direct heat, and prolonged sunlight. Keep packaging sealed during storage and transport. No dangerous goods classification; standard dry cargo handling applies. |
| Storage | Store Globalene PP Homopolymer 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 prolonged exposure to elevated temperatures, which can cause degradation. Ensure storage area is clean and separate from oxidizing agents and incompatible materials. |
| Shelf Life | Store in a cool, dry place away from sunlight and heat. Shelf life is typically 12 months from date of manufacture. |
For thin-wall food-contact containers and caps moulded from Globalene PP homopolymer, the primary process boundary is the interaction between MFR class, flow-length-to-wall-thickness ratio, and gate geometry. Grades meeting a nominal melt flow rate of 11–70 g/10 min under ISO 1133-1 (230 °C, 2.16 kg) are typical for injection moulding; thin-wall dairy pots and lids with wall thickness between 0.35 mm and 0.80 mm generally require MFR above 30 g/10 min to avoid short shots at flow-length ratios above 150:1. Processing conditions on production-scale hydraulic and electric injection moulding machines include barrel profiles from 210 °C to 250 °C, melt temperature 230–250 °C, mould temperature 15–50 °C, injection pressure 70–140 MPa, and packing pressure held at 50–80% of peak injection pressure. The mould cavity must be vented at the end of fill; insufficient venting produces burn marks and short shots. Shrinkage after moulding falls between 1.2% and 2.5% by ASTM D955, and non-uniform thickness, gate location, or cooling-channel imbalance drives warpage. Typical tensile yield stress is 31–36 MPa under ISO 527-2, flexural modulus 1,100–1,500 MPa under ISO 178, and notched Izod impact 2–4 kJ/m² under ISO 180/A. Food-contact compliance is supported when the neat polymer meets 21 CFR 177.1520(c) and migration limits under Commission Regulation (EU) No 10/2011; final pack testing remains required for specific food simulants and time-temperature conditions. Because homopolymer impact strength drops below 0 °C, thin-wall containers are not specified for deep-freeze applications below -20 °C without rubber modification, where a block copolymer or impact grade should replace the homopolymer.
Pre-drying is normally unnecessary for sealed, dry feedstock. When storage RH exceeds 85%, surface condensation can produce silver streaks, and hot-air drying at 80 °C for 2 h is used. The processing window is narrow for MFR grades above 50 g/10 min because melt temperature overshoot above 280 °C accelerates chain scission and reduces drop impact. Gate design should use valve gates or hot-runner tips with open diameters of 0.8–1.5 mm; restricted gates of 0.3 mm or smaller may shear-heat to above 290 °C in high-speed cycles. Terminal products include injection-moulded tubs, caps, closures, and disposable food containers.
Raffia-grade Globalene PP homopolymer with nominal MFR 2–4 g/10 min is extruded through slot dies or cast-film dies into water-quenched sheet or film, slit into tapes, and oriented in-line. The formulation commonly includes 0.05–0.30 wt% HALS and a processing stabilizer package, and CaCO₃ masterbatch may be added at 2–10 wt% for cost, opacity, and printability; at 10 wt% CaCO₃, tape tenacity measured under ISO 13934-1 or equivalent film specimen methods typically declines by 15–30% relative to unfilled tape, and melt fracture becomes more likely if dispersion is poor. Extruder L/D is typically 30:1 to 36:1 with a barrier screw, barrel temperature 220–260 °C, die gap 0.3–0.8 mm, and water-bath temperature 20–40 °C. The quench bath has a critical upper limit: temperatures above 40 °C allow slow crystallisation, reduce drawability, and create sticky tape surfaces, while temperatures below 15 °C produce excessive curl and dimensional instability. Slit tapes are drawn at ratios of 5:1 to 9:1 in hot-air ovens or on hot rolls at 100–140 °C, followed by annealing rolls at 80–120 °C to control shrinkage. Tape linear density for woven sacks runs from 50 tex to 200 tex, depending on fabric weight. FIBC fabrics use heavier tapes and require UV stabilisation and static control. Weaving on circular or flat looms demands tape elongation values of 15–25% at break; excessive draw ratios above 9:1 raise fibrillation, tape splitting, and weave defects such as broken picks. Terminal products include FIBCs, woven sacks, geotextile backing, and carpet backing. Compliance for FIBC construction is evaluated under ISO 21898, and dangerous-goods FIBCs are tested to the applicable UN packaging requirements; the polymer itself is not the sole determinant of certification.
Biaxially oriented polypropylene film produced from Globalene homopolymer requires narrow MFR control—nominally 2–4 g/10 min—and high isotacticity, with xylene solubles usually held below 3–5 wt% to maintain gauge uniformity and stiffness. The cast sheet is extruded at 220–250 °C onto a chill roll maintained at 20–40 °C to yield a low-crystallinity preform; cast sheet thickness is commonly 200–400 µm. Orientation is sequential: machine-direction orientation stretches 4.5:1 to 5.5:1 at 120–140 °C, and transverse-direction orientation stretches 7:1 to 9:1 at 150–170 °C. Heat-setting in the tenter oven at 150–165 °C with a controlled relaxation of 0.5–2.0% reduces film shrinkage to below 5% at 120 °C, measured by ASTM D1204 or equivalent tenter method. Film thickness of 10–50 µm is typical for packaging and capacitor dielectrics, with thickness variation targets of ±1.0–3.0%. Because homopolymer has no sealant functionality, heat-sealable packaging requires coextrusion with a PP/PE random copolymer or terpolymer sealant layer; the homopolymer side then provides stiffness, gloss, and barrier after metallisation. Capacitor-grade film requires low ash and tight isotacticity control to meet electrical breakdown specifications under IEC 60674; published data for specific Globalene capacitor-film configurations is limited, so capacitor qualification cannot be completed without batch-level dielectric testing. Food-contact use is evaluated under Commission Regulation (EU) No 10/2011 and 21 CFR 177.1520(c). Process boundaries: attempting MDO draw ratios above 5.5:1 or lowering MDO temperature below 115 °C leads to edge tears and thickness bands; TDO speeds that raise strain rate above the crystalline network relaxation threshold create localised necking and gauge drift. Terminal products include metallised barrier films, clear packaging film, overwrap, and capacitor dielectric.
| Operation | Temperature | Stretch ratio | Control parameter |
|---|---|---|---|
| Cast quench | 20–40 °C | — | Smectic preform formation |
| MDO | 120–140 °C | 4.5:1–5.5:1 | Edge tear prevention |
| TDO | 150–170 °C | 7:1–9:1 | Gauge uniformity |
| Heat set | 150–165 °C | relaxation 0.5–2.0% | Shrinkage under ASTM D1204 |
Where continuous filament nonwovens require filament denier control, Globalene homopolymer grades with nominal MFR 25–40 g/10 min are processed through extruders feeding spinnerets with hole diameters of 0.3–0.8 mm. Melt temperature is held at 230–280 °C with melt filtration at 20–40 µm to remove gels. A gear pump stabilises throughput to less than ±2% variation before the spin beam. Quench air at 8–20 °C and velocities of 0.3–1.0 m/s cools filaments below the crystallisation onset; filament velocities in the draw jet typically exceed 3,000 m/min. Filament diameter is controlled by polymer throughput, air temperature, and draw jet pressure; fibre denier typically ranges from 1.0 dtex to 2.5 dtex for hygiene fabrics. Web formation on a moving conveyor yields basis weights from 10 g/m² to 100 g/m². Calender bonding at 140–160 °C with nip pressure of 30–70 N/mm produces point-bonded fabric. Tensile strength is measured under ISO 9073-3, tear strength under ISO 9073-4, and thickness under ISO 9073-2. Formulation requirements include process stabilisers, UV stabilisers for agricultural covers, and TiO₂ masterbatches for pigment. Terminal products include hygiene nonwoven topsheets, medical barrier fabrics, and agricultural cover nonwovens. Gamma sterilisation above 25 kGy without a tailored stabiliser package causes oxidative embrittlement in PP, so medical applications often use ethylene oxide or e-beam sterilisation instead. Low-smoke and low-ash grades are needed for clean-room or electrical nonwovens. Processing bottleneck occurs when quench air temperature is below 5 °C, which can freeze surface moisture and cause filament breaks, while air above 25 °C promotes roping and uneven deposition.
Extruded sheet from Globalene PP homopolymer for thermoforming uses low-MFR grades—typically 0.5–3.0 g/10 min—because high molecular weight improves melt strength during sheet formation. The sheet line runs at melt temperatures of 200–240 °C with a polishing stack temperature of 80–110 °C. Sheet thickness for packaging trays is usually 0.2–1.5 mm; thicker industrial sheet to 5 mm requires multi-calendering passes. Thermoforming is conducted at sheet-surface temperatures of 150–170 °C, but the homopolymer has a sharp sag threshold above 175 °C; sagging deepens before plug contact unless sheet temperature is controlled to ±5 °C. Plug-assist timing is set so the plug contacts the sheet before it sags more than 15–20 mm, and plug temperature is typically 90–120 °C. Forming pressure ranges from 0.4 MPa to 1.0 MPa. Area draw ratios are normally limited to 2:1 to 4:1 for single-cavity parts; above 4:1, wall-thinning and corner blowouts occur. Nucleating agents such as sorbitol-based clarifiers at 0.05–0.30 wt% are added to raise crystallisation temperature and reduce cycle time, but grades containing high levels of clarifier can produce visible haze in thick sheet. Terminal products include trays, lids, cups, and automotive interior trays. Food-contact requirements follow Commission Regulation (EU) No 10/2011 and 21 CFR 177.1520(c). The operational boundary is low-temperature brittleness: homopolymer sheet and formed parts are not specified for freezer-to-microwave duty unless the grade is modified with impact copolymer or elastomer, because crack initiation rises below -10 °C.
Masterbatch producers use Globalene PP homopolymer as a carrier resin when let-down is in PP-based film, fibre, or injection moulding. Carrier MFR is selected above the final product MFR: for fibre and cast film masterbatch, nominal MFR 25–60 g/10 min; for high-flow thin-wall injection moulding masterbatch, nominal MFR may reach 100 g/10 min. Compounding occurs on co-rotating twin-screw extruders with L/D ratios of 36:1 to 52:1, separate pigment feeding through side feeders, and vacuum devolatilisation at -0.06 MPa to -0.09 MPa. Screw speed is set between 300 rpm and 800 rpm, and melt temperature is held at 180–220 °C to limit thermal exposure for organic pigments. Pigment loadings vary with carrier MFR and wetting: carbon black masterbatches commonly load 40–50 wt%, TiO₂ concentrates 50–70 wt%, and organic pigment concentrates 20–40 wt%. Dispersion defects such as undispersed pigment agglomerates, filter pressure rise, and plate-out are controlled by screw configuration, mixing zones, and screen packs with mesh sizes of 100–325. Quality is assessed by filter pressure tests at 20 µm and by film surface defect counts. Because the carrier is homopolymer, it contributes little to impact modification; masterbatches intended for impact-copolymer finished products must be evaluated for final Izod impact reduction. Food-contact masterbatches used in PP packaging must comply with the overall migration limits of Commission Regulation (EU) No 10/2011; the masterbatch does not have independent food-contact status. Terminal products include colour concentrates and additive concentrates for PP film, fibre, injection moulding, and blow moulding.
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The Globalene homopolymer polypropylene portfolio from Lee Chang Yung Chemical Industry Corporation is produced via bulk polymerization utilizing high-activity Ziegler-Natta catalyst systems, yielding an isotactic index routinely exceeding 96 % and a highly linear chain architecture with negligible ethylene comonomer. This product family encompasses a spectrum of melt mass-flow rate grades designated by a four-digit nomenclature: 6031 (MFR 3 g/10 min), 6431 (MFR 8 g/10 min), 6331 (MFR 11 g/10 min), 7533 (MFR 35 g/10 min), and the nucleated variant 7533N. All grades are formulated without plasticizers and carry a wide processing window across injection molding, compression molding, and extrusion. The absence of an ethylene-propylene rubber phase distinguishes these homopolymers from impact copolymer grades in the Globalene 7000 series, yielding a higher bending modulus and heat deflection temperature but markedly lower multi-axial impact strength at sub-ambient temperatures.
In thin-wall rigid packaging applications where flow-length-to-wall-thickness ratios exceed 250:1, converters running the 7533 grade routinely set melt temperatures between 230 °C and 250 °C and mold temperatures in the 15–30 °C range. With a minimum injection velocity of 200 mm/s and a holding pressure of 60–80 MPa, the material achieves a spiral flow length of 85 cm at a wall thickness of 0.5 mm (measured per ISO 16770). Cooling time for a 0.4 mm section at a mold temperature of 20 °C occupies approximately 4.2 s, during which the formation of a pronounced skin-core morphology contributes to anisotropic shrinkage of 1.2–1.6 % in the flow direction and 0.8–1.1 % transverse (determined via ISO 294-4 after 48 h conditioning). This differential is partially offset by switching to the nucleated 7533N grade, where the addition of a sorbitol-based clarifying/nucleating agent reduces the DSC half-crystallization time at 130 °C from 3.1 s to 1.6 s. The consequent increase in crystallization onset temperature narrows the orientation release window, lowering post-mold distortion by approximately 25 % and permitting a cycle-time reduction of 12–15 % without compromising drop-impact resistance. Gate design, however, is critical: pinpoint gates smaller than 0.8 mm in diameter generate excessive shear heating that can degrade molecular weight by more than 5 % in a single pass, as confirmed by post-molding melt flow analysis per ISO 1133-1:2022.
| Property | Test Method | 6031 | 6431 | 7533 | 7533N |
|---|---|---|---|---|---|
| Melt mass-flow rate (230 °C/2.16 kg) | ISO 1133-1 | 3 g/10 min | 8 g/10 min | 35 g/10 min | 35 g/10 min |
| Tensile stress at yield (50 mm/min) | ISO 527-2 | 35 MPa | 34 MPa | 36 MPa | 37 MPa |
| Flexural modulus (2 mm/min) | ISO 178 | 1500 MPa | 1450 MPa | 1600 MPa | 1650 MPa |
| Notched Izod impact (23 °C) | ISO 180/A | 3.0 kJ/m² | 3.5 kJ/m² | 2.5 kJ/m² | 2.8 kJ/m² |
| Heat deflection temperature (0.45 MPa) | ISO 75-2/B | 108 °C | 110 °C | 115 °C | 118 °C |
| Molding shrinkage (flow / transverse) | ISO 294-4 | 1.5/1.2 % | 1.5/1.2 % | 1.4/1.1 % | 1.1/0.9 % |
Globalene PP homopolymer exhibits a flexural modulus of 1450–1650 MPa, roughly 30–40 % higher than that of a typical heterophasic impact copolymer (Globalene 7433, for example, delivers a flexural modulus of 1100 MPa at comparable MFR). The heat deflection temperature under 0.45 MPa load remains above 108 °C across the homopolymer range, whereas impact copolymers soften 20–25 °C lower. This thermal rigidity translates directly into dimensional stability during hot-fill operations (up to 95 °C for short-contact cycles) and allows thinner wall sections in microwaveable containers. The trade-off is low-temperature toughness: the notched Izod of homopolymer at 0 °C drops below 1.5 kJ/m², rendering it unsuitable for drop-critical applications below freezing. For thin-wall containers stored and handled above 5 °C, however, the stiffness-to-weight advantage enables part mass reductions on the order of 8–12 % relative to impact copolymer designs, verified through structural finite-element benchmarking against ASTM D5418 dynamic mechanical analysis data.
Injection-compression molded closures manufactured from medium-flow grades 6431 and 6331 exhibit a strip torque retention of 92–95 % after 10 application-removal cycles at 23 °C, measured per ASTM D5419. The high crystallinity associated with the homopolymer backbone minimizes stress relaxation in the undercut region, but the absence of a rubber phase makes the material susceptible to environmental stress cracking when exposed to certain surfactant-laden liquids. For closures intended for edible oil or personal care packaging, post-mold annealing at 80 °C for 30 min reduces residual hoop stress by 40 % and essentially eliminates stress-crack propagation during 60 °C detergent immersion for 48 h. The grade 6331 has been tested against ISO 846 and shows no fungal growth after 28 d at 29 °C and 95 % RH, meeting the stringent requirements of building-ventilation component OEMs. When injection speeds exceed 150 mm/s, the gas-venting depth in the mold must be maintained at 0.02–0.03 mm to avoid burn-on discoloration that can compromise organoleptic neutrality.
| Regulation | Scope | Applicable Condition |
|---|---|---|
| FDA 21 CFR 177.1520 (c) 1.1 | Olefin polymers, homopolymer PP | All food types up to 100 °C hot-fill; no extractive restriction beyond 6 mm²/mL surface-to-volume ratio |
| EU 10/2011 (OM 2) | Overall migration in simulant B (3% acetic acid) and simulant D1 (50% ethanol) | < 10 mg/dm² after 10 d at 40 °C |
| RoHS 2011/65/EU recast | Restriction of Pb, Hg, Cd, Cr6+, PBBs, PBDEs | Concentrations below 0.1 wt% (Cd 0.01 wt%) in homogeneous material |
| REACH EC 1907/2006 | SVHC absence (latest candidate list) | No listed substance intentionally added; supplier declaration dated 2024 |
| USP Class VI (optional) | Biological reactivity for medical device components | Passes systemic injection, intracutaneous, and implantation tests when processed at 220 °C |
For monoaxially oriented tape and monofilament lines, the 6031 grade with MFR 3 g/10 min delivers the required melt strength for a stable water-quench drawing process. The polymer’s controlled, narrow molecular weight distribution (polydispersity index 3.5–4.2) minimizes low-MW chain fractions that would otherwise cause filament breakage during drawing at ratios of 6:1 to 8:1. A single-screw extruder with an L/D of 30:1, equipped with a melt pump and a flat-profile die gap of 0.8 mm, is operated at a barrel profile from 190 °C to 230 °C; melt temperature at the die face is held within ±2 °C to avoid denier fluctuation beyond ±3 %. Quenching is performed in a water bath set to 35 °C, followed by an in-line orientation oven at 130 °C and a secondary annealing zone at 145 °C with 3–5 % relaxation. The resulting tape exhibits a tensile strength at break of 480–520 MPa (ASTM D882) and an elongation at break below 20 %. Pre-drying of the resin at 80 °C for 2 h is mandatory when ambient relative humidity exceeds 60 %; moisture levels above 0.08 wt% lead to visible bubbles in the tape web and a stepwise reduction of breaking strength by up to 15 %. The grade must not be combined with phthalate-based slip agents if the final article is destined for pharmaceutical primary packaging, as those additives migrate at rates exceeding the allowed specific migration limit of 0.1 mg/kg under EU 10/2011.
When a homopolymer feedstock is subjected to repeated extrusion or regrind cycles, the standard phenol/phosphite antioxidant package present in the Globalene homopolymer series retards oxidative chain scission such that the MFR drift after three complete injection-molding cycles remains below 15 % of the initial value. Dynamic rheological data obtained on a 25 mm parallel-plate rheometer at 200 °C show that the crossover frequency between storage and loss moduli remains unchanged through two regrind passes but shifts to higher frequency by 0.8 rad/s after the third pass, indicating a slight broadening of the molecular weight distribution. For applications requiring more than 20 % regrind incorporation, the processor is advised to blend a restabilization masterbatch targeting a retained phenolic concentration of 500–800 ppm. The melt temperature during all regrind handling should not exceed 240 °C; residence time in the barrel above 220 °C must be kept under 4 min to avoid gel formation that nucleates surface pits on film or sheet. Published data for systems exposed to more than five successive extrusion cycles is limited; however, the observed trend indicates an eventual loss of impact strength to 1.2 kJ/m² or below, at which point the material’s brittleness renders it unsuitable for load-bearing thin-wall articles.
