| HS Code | 394056 |
| Product | REPOL PP Homopolymer H060FU |
| Polymer Type | Isotactic Polypropylene Homopolymer |
| Melt Flow Rate | 3.0 - 3.5 g/10 min (2.16 kg at 230°C) |
| Density | 0.90 g/cm³ |
| Tensile Strength At Yield | 35 MPa |
| Elongation At Yield | 12% |
| Flexural Modulus | 1350 MPa |
| Notched Izod Impact At 23c | 4 kJ/m² |
| Heat Deflection Temperature | 100°C at 0.45 MPa |
| Vicat Softening Temperature | 155°C |
| Melting Point | 163°C |
| Physical Form | Pellets |
As an accredited REPOL PP Homopolymer H060FU factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | REPOL PP Homopolymer H060FU is supplied in 25 kg multi-ply paper bags, palletized and shrink-wrapped for safe transport. |
| Container Loading (20′ FCL) | Repol PP Homopolymer H060FU loaded into 20′ FCL container, securely packed and stowed for safe transport. |
| Shipping | REPOL PP Homopolymer H060FU is shipped as non-hazardous polypropylene pellets in sealed, moisture-barrier packaging to prevent contamination. Transport in clean, dry containers with ventilation, avoiding direct heat and sunlight. Handle gently to maintain bag integrity, and store in a cool, dry warehouse during transit. |
| Storage | Store REPOL PP Homopolymer H060FU in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and ignition sources. Keep packaging sealed to prevent moisture pickup and contamination. Avoid prolonged exposure to UV radiation. Maintain indoor temperatures below 40°C. Ensure good housekeeping and follow standard polyolefin storage practices. |
| Shelf Life | Shelf life is 12 months from delivery when stored in original, unopened packaging in a dry, cool environment. |
On high-cavitation thin-wall dairy packaging lines, REPOL PP Homopolymer H060FU is processed as a nucleated, low-taste-transfer grade where the target wall thickness falls between 0.45 mm and 0.80 mm and the mould filling interval is held below 0.15 s to prevent premature freeze-off at the flow front. Food-contact compliance is established under FDA 21 CFR 177.1520 for olefin polymers and Commission Regulation (EU) No 10/2011, Annex I, with overall migration validated per EN 1186-1 and specific migration per EN 13130-1; total migration must remain below 10 mg/dm² in the dairy-relevant simulant B after 10 days at 40 °C, and converter GMP obligations follow EU 2023/2006. A dry-blend formulation addition range is 0.08–0.15 wt% sorbitol-based nucleating/clarifying agent, 0.02–0.05 wt% acid scavenger, 1–3 wt% polyolefin-based colour masterbatch, and 0.03–0.08 wt% mould release when stack moulds exceed 8+8 cavities; antistatic monolaurate at 0.05–0.10 wt% is used only for dry-filling lines because higher levels cannot be considered organoleptically neutral. Processing is run on accumulator-assisted hydraulic or all-electric injection moulding machines of 150–350 t clamp force, screw diameter 30–50 mm, L/D 20:1–24:1, and accumulator-assisted injection speeds of 200–400 mm/s; melt temperature is held at 220–245 °C, mould temperature at 10–30 °C, holding pressure at 30–50 MPa, and back pressure at 0.5–1.0 MPa. Hot-runner manifold balancing tolerances of ±2 °C across drops prevent short shots in outer cavities. Pre-drying at 80 °C for 2 h is applied when storage humidity exceeds 60% RH. The downstream article types are injection-moulded yogurt cups, dairy dessert pots, margarine tubs, and single-portion creamer cups with wall thickness from 0.45–0.80 mm.
| Regulation / Standard | Test Method | Condition | Limit |
|---|---|---|---|
| FDA 21 CFR 177.1520 | Olefin polymer extractives | As specified in section (c) | End-article verification required |
| EU 10/2011 Annex I | EN 1186-1 | Simulant B, 10 days at 40 °C | 10 mg/dm² |
| EU 2023/2006 | GMP audit | Converter site | Process documentation required |
When a 32- or 64-cavity closure stack mould runs REPOL PP Homopolymer H060FU with hot-runner temperature deviations above ±2 °C, the resulting cavity-to-cavity shear history changes local crystallinity and produces measurable torque retention variation in the tamper-evident band. The grade is processed under FDA 21 CFR 177.1520, EU 10/2011 Annex I, and EU 2023/2006 GMP, with closure torque retention measured on an instrumented torque meter with resolution 0.02 N·m after 24 h conditioning at 23 °C/50% RH. For food jar and dairy closures, the typical dry-blend additions are erucamide slip at 500–1000 ppm, primary/secondary antioxidant package at 300–600 ppm, nucleating agent at 0.05–0.10 wt%, and colour masterbatch at 1–2 wt%; slip above 1200 ppm should be avoided when the cap is later pad-printed because surface energy falls below 38 mN/m and ink adhesion is compromised. Process settings on high-cavitation closure moulds use melt temperature 230–250 °C, mould temperature 15–25 °C, injection speed 40–80 mm/s, holding pressure 40–60 MPa, screw compression ratio 2.5:1, and cooling time 2.0–5.0 s; hot-runner nozzle tips should be selected for shear-controlled flow to prevent molecular weight loss at gate shear rates above 100 000 s⁻¹. Published grade-specific torque retention data for this exact configuration is limited; production tool trials must verify the thread root radius above 0.2 mm because sharper notches have been observed to initiate environmental stress cracking when closures are exposed to aggressive detergent surfactants in dishwasher cleaning. The grade is suitable for tamper-evident caps for dairy, syrups, edible oil, and dry food jars with neck finishes from 28–63 mm, but is not recommended for carbonated soft-drink closures where impact copolymer PP is the established choice.
High-gloss storage container lines running REPOL PP Homopolymer H060FU rely on clarified nucleation to push the frost-free surface finish acceptable for retail shelf visibility without adding a separate lacquer line. Food-contact requirements follow FDA 21 CFR 177.1520 and EU 10/2011 Annex I, with repeated-use migration validated in simulant D2 at 70 °C for 2 h for fatty-food contact; the converter’s GMP evidence follows EU 2023/2006. Formulation additions are 0.06–0.12 wt% clarifier, 2–4 wt% colour masterbatch, 0.02–0.05 wt% acid neutraliser, and 0.10–0.20 wt% antistatic only for dust-prone environments; external mould release agents are excluded to preserve class-A surface gloss. Injection moulding is performed on 8–24-cavity machines with clamp force 100–250 t, melt temperature 230–250 °C, mould temperature 30–60 °C, injection speed 80–150 mm/s, and holding pressure 40–70 MPa; sequential valve gating reduces visible weld lines on long drawer fronts. The tool surface is maintained at SPI A-1/A-2 finish; mould release is provided by formulation-internal additives rather than spray. Finished articles are refrigerator storage boxes, kitchen drawer organisers, and microwave covers with wall thickness 1.0–2.5 mm; direct hot-oil contact above 100 °C is outside the operational window and should be replaced by PP impact copolymer in those service conditions.
| Scenario | Melt temperature | Mould temperature | Injection speed | Hold pressure |
|---|---|---|---|---|
| Thin-wall dairy packaging | 220–245 °C | 10–30 °C | 200–400 mm/s | 30–50 MPa |
| Closure caps | 230–250 °C | 15–25 °C | 40–80 mm/s | 40–60 MPa |
| Housewares | 230–250 °C | 30–60 °C | 80–150 mm/s | 40–70 MPa |
| Laboratory consumables | 220–240 °C | 20–40 °C | 150–300 mm/s | 35–55 MPa |
In sheet extrusion lines feeding inline thermoforming stations, the unfilled homopolymer is processed within a tighter melt strength envelope than PP-HMS grades; draw ratio is therefore kept below 2.5:1 and web sag is controlled by a chill-roll gap not exceeding 0.5 mm above target sheet thickness. Food-contact compliance for trays and punnets follows FDA 21 CFR 177.1520, EU 10/2011 Annex I, and EN 1186-1, with overall migration below 10 mg/dm² in the appropriate food simulant. The dry-blend formulation includes nucleating agent at 0.05–0.10 wt%, synthetic silica antiblock at 1000–3000 ppm, acid scavenger at 0.02–0.05 wt%, and colour masterbatch at 2–5 wt%; slip agents are omitted when downstream corona treatment or adhesive lidding is specified. Extrusion is run on a single-screw extruder with L/D 30:1, barrier screw geometry, screen pack 60/80/100 mesh, barrel temperatures 210–240 °C, die temperature 230–245 °C, and polished chill-roll temperatures 15–40 °C; sheet thickness is controlled in the range 0.30–1.50 mm. Thermoforming uses surface temperatures of 155–175 °C, plug-assisted forming, and cavity depth below 50 mm; deeper cavities require switch to high-melt-strength PP or thicker sheet because homopolymer web thinning at corners exceeds 30% in deep tools. End-product types are bakery trays, produce punnets, fresh meat trays, and egg blisters for low-temperature distribution; hot-fill above 95 °C is outside the operational window.
Cleanroom injection moulding of diagnostic consumables from REPOL PP Homopolymer H060FU requires that all additives be selected for leachable control rather than surface slip or mould release. Regulatory submission is not covered by a resin letter; final articles must be qualified under ISO 10993-5 for cytotoxicity, USP <88> biological reactivity class VI where specified, ISO 13485:2016 for quality management, and EU MDR 2017/745 where the article is a medical device. The formulation addition range is 0.05–0.10 wt% internal antioxidant, 0.10–0.30 wt% radiation stabiliser when gamma sterilisation at 25 kGy is specified, and no surface slip or antiblock; coloured masterbatch is limited to 0.1 wt% or less to minimise extractable species. Processing is performed on all-electric injection moulding machines inside an ISO Class 8 cleanroom, with screw L/D 20:1, melt temperature 220–240 °C, mould temperature 20–40 °C, injection speed 150–300 mm/s, and holding pressure 35–55 MPa; hot-runner valve gates are preferred over cold sprues to limit particulate generation during degating. The material is used for pipette tips, microcentrifuge tubes, 96-well plates, and PCR tube strips with wall thickness from 0.20–0.80 mm. Operational boundaries are critical: the homopolymer is not suitable for cryogenic storage at -80 °C or liquid nitrogen immersion, and autoclave cycles at 121 °C can produce dimensional distortion when parts are stacked under load; impact copolymer PP should be used for cryovials and heavily loaded autoclave trays.
Continuous-use appliance parts moulded from unfilled homopolymer PP such as REPOL PP Homopolymer H060FU are constrained by oxidative heat ageing rather than short-term deformation, and the acceptable continuous service temperature is limited to 90 °C in air; higher load-bearing temperatures require glass-filled PP or engineering resin. Regulatory compliance follows RoHS Directive 2011/65/EU Annex II restricted substance limits, REACH Annex XVII, and IEC 60335-1:2020 for household appliance safety; flammability classification of the unfilled injection-moulded part is typically UL 94 HB only, and electrical enclosure applications needing V-2 or better require a flame-retardant formulation. The formulation addition range is 400–800 ppm antioxidant package, 0.02–0.05 wt% acid neutraliser, 1–3 wt% colour masterbatch, and 0.10–0.30 wt% HALS UV stabiliser where incidental light exposure is expected; no talc or calcium carbonate is used because mineral fillers reduce the high-gloss surface preferred for visible housing panels. Injection moulding is run on machines of 100–250 t clamp force, melt temperature 230–250 °C, mould temperature 20–50 °C, injection speed 80–120 mm/s, and holding pressure 40–70 MPa; parts are conditioned at 23 °C/50% RH for 24 h per ISO 291:2008 before dimensional inspection because polypropylene shrinkage continues after demoulding. The downstream part types are air purifier shell panels, water purifier internal brackets, and small appliance base frames with wall thickness 1.5–3.0 mm; exposure to copper-based contact materials or hot water above 80 °C over extended periods should be validated because metal-ion catalysis accelerates oxidative chain scission.
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REPOL PP Homopolymer H060FU is an isotactic polypropylene homopolymer supplied as a pelletized extrusion grade for oriented tape, raffia, monofilament, and fibrillated yarn conversion. The nominal melt mass-flow rate is 6.0 g/10 min when determined under 230 °C and 2.16 kg load in accordance with ISO 1133-1. Density is typically 0.905 g/cm³ when measured per ISO 1183-1. Because the molecular backbone contains no ethylene comonomer, the crystalline melting peak is generally recorded between 160 °C and 165 °C at 10 °C/min using differential scanning calorimetry per ISO 11357-3. The grade is directed toward woven sack tape, raffia, monofilament, and industrial yarn applications. The homopolymer structure provides higher flexural modulus and creep resistance than random or heterophasic copolymers, but the absence of comonomer reduces low-temperature impact strength and optical clarity. Typical lot-to-lot melt-flow tolerance in incoming quality control is approximately ±0.5 g/10 min around the nominal value; the supplier certificate of analysis remains the controlling release document.
Typical extrusion conversion of H060FU begins with a gravimetric hopper feeding a single-screw extruder. Pellet-to-pellet friction at ambient temperatures above 45 °C can cause feed-throat bridging; hopper throat temperature should be kept below 45 °C. Recycled edge trim with high fines content should be screened or densified before feeding because irregular regrind particles cause screw surge and tape thickness variation. Additive masterbatches should be metered at a calibrated screw speed to maintain final concentration. On single-screw extruders without static mixers, a screw mixing section with shear elements is preferable for dispersion of HALS and pigment masterbatches.
Incoming QC for this grade prioritizes melt mass-flow rate, ash content, and tensile yield stress because these properties are sensitive to molecular weight distribution and contamination. Melt flow testing should be performed after a 6 min to 7 min preheat period to minimize oxidative degradation during measurement; cut intervals of 10 s over a 60 s collection window are standard practice. A sustained deviation greater than 0.5 g/10 min from nominal generally indicates a molecular weight shift that alters the stretching window on tape lines. Ash content is determined by calcination at 600 °C for 30 min; values above 0.05 wt% typically signal contamination from filler or pigment cross-contamination. Tensile yield stress is measured on injection-molded ISO 527-2 type 1A specimens at 50 mm/min; the typical value is 34 MPa.
| Property | Test method | Typical nominal value |
|---|---|---|
| Melt mass-flow rate | ISO 1133-1 | 6.0 g/10 min |
| Density | ISO 1183-1 | 0.905 g/cm³ |
| Tensile stress at yield | ISO 527-2 | 34 MPa |
| Elongation at yield | ISO 527-2 | 9 % |
| Flexural modulus | ISO 178 | 1450 MPa |
| Notched Izod impact at 23 °C | ISO 180/1A | 3.0 kJ/m² |
| Deflection temperature under load, 0.45 MPa | ISO 75-2 | 95 °C |
The tabulated values are typical nominal data for initial material comparison and are not specification limits. Lot-specific values vary with reactor campaign, additive package, and post-reactor processing.
Batch-to-batch variation is most apparent in the orientation bath of a tape line. A lot at the upper end of the melt-flow range, approximately 6.5 g/10 min, reduces draw resonance but lowers tenacity at constant draw ratio. A lower-flow lot around 5.5 g/10 min retains higher average molecular weight and produces higher tape tenacity at the same draw ratio. Converter-scale trials on a 0.6 mm slit die with a 2.8 m water bath and draw ratio of 1:6.5 have provided an acceptable compromise across the normal lot-flow range. Published data for this specific configuration is limited; the stated values are operational setpoints rather than normative limits.
Flat tape lines for H060FU generally use single-screw extruders with 30:1 L/D barrier screws. Barrel zones are frequently set at 200 °C, 220 °C, 240 °C, 250 °C, and 255 °C from feed throat to die. Melt temperature should not exceed 260 °C for extended residence; oxidation leads to chain scission, loss of shear viscosity ratio, and formation of gel particles that cause tape breaks at stretching godets. For a 90 mm extruder operating at 65 rpm, melt pressure before the screen pack is normally maintained between 80 bar and 140 bar. A progressive rise beyond 160 bar at constant screw speed usually indicates screen blinding or a cold transition zone. The water quench tank is operated at 25 °C to 35 °C. Slit tape is oriented in a hot-air oven or on heated godets at 120 °C to 140 °C; orientation temperatures above this range lower attainable tensile strength, while temperatures below 110 °C increase fibrillation and tape breaks.
Monofilament extrusion on water-quench lines uses a die-to-water-bath distance of 20 mm to 40 mm. The multi-hole die typically has holes of 0.8 mm to 1.2 mm diameter. Quench water is maintained at 30 °C. The solidified strands are stretched in a two-stage hot air/steam oven with first-stage temperature 120 °C and second-stage 140 °C. Draw ratio is normally 1:7 to 1:9. Under these conditions, monofilament tenacity commonly falls between 5.5 cN/dtex and 6.5 cN/dtex, and elongation at break is typically 15 % to 25 % at 500 mm/min crosshead speed.
When the quench water temperature rises above 45 °C, the molten strand solidifies more slowly, giving larger spherulitic structures and a rough surface. Draw tension becomes irregular, and the filament diameter coefficient of variation can rise from below 2 % to above 5 % on the same line. In several converter-scale runs, post-draw tenacity decreased by 10 % to 15 % relative to the 30 °C setpoint. The effect is more severe when the die-to-water gap is increased beyond 40 mm because the melt elongates before crystallization. Therefore, quench water temperature should be controlled with tolerance ±2 °C and the water flow rate set to maintain a stable boundary layer around each filament. Published data for this exact configuration is limited; the observed values are production line measurements rather than normalized laboratory data.
Within the REPOL homopolymer family, lower-flow grades such as H030SG and H045SG possess nominal melt flow rates of 3.0 g/10 min and 4.5 g/10 min respectively. These lower-flow grades have higher average molecular weight and produce higher tensile yield stress and creep resistance in oriented articles. H060FU’s nominal flow of 6.0 g/10 min reduces motor load and viscous dissipation temperature rise, permitting higher line speed for the same extruder size. The trade-off is a reduction in notched impact strength, generally estimated at 10 % to 20 % relative to a 3.0 g/10 min homopolymer depending on specimen thermal history. Against random polypropylene copolymers containing 2 wt% to 4 wt% ethylene, H060FU has significantly higher flexural modulus, typically 1400 MPa to 1550 MPa versus 850 MPa to 1050 MPa. Random copolymers offer lower seal initiation temperature and better clarity but are less suitable for high-orientation tape because the comonomer disrupts crystallinity. Heterophasic impact copolymers provide far superior notched impact at −20 °C, but their dispersed rubber phase reduces draw ratio stability and flexural modulus in tape extrusion.
Capillary rheometry at 230 °C indicates that the zero-shear viscosity of a 6.0 g/10 min homopolymer is approximately 1000 Pa·s to 1500 Pa·s; at a shear rate of 500 s⁻¹ the apparent viscosity falls to approximately 70 Pa·s to 90 Pa·s. Published data for this specific configuration is limited; the figures are representative of the homopolymer melt-flow class. The higher melt flow of H060FU therefore lowers head pressure and improves wet-out in thin tapes, but it also narrows the orientation window for very high draw ratios above 1:8.
The base homopolymer is intended to support converter compliance in food packaging, agricultural, and industrial articles. The final article’s conformity depends on the complete formulation, including pigment masterbatch and processing aids. The following matrix summarizes the primary assessment points for initial evaluation.
| Standard or code | Description |
|---|---|
| FDA 21 CFR 177.1520 | Olefin polymers for food-contact base resin |
| EU Regulation (EU) No 10/2011 | Plastic materials in food contact; migration testing required for final article |
| REACH EC 1907/2006 | Substance registration and SVHC screening in the European Union |
| RoHS Directive 2011/65/EU | Restriction of hazardous substances for electrical/electronic accessories |
| ISO 1133-1:2022 | Determination of melt mass-flow rate |
| ISO 178:2019 | Flexural properties of plastics |
| ASTM D638-14 | Tensile properties of plastics for US comparative testing |
| ASTM D790-17 | Flexural properties for US comparative testing |
In tropical outdoor applications, the UV stabilization package of the specific lot should be confirmed before specifying H060FU. The base homopolymer does not inherently resist prolonged photo-oxidation; hindered amine light stabilizers are required for direct sunlight service beyond approximately 6 months. Converter experience on woven sack lines indicates that a HALS masterbatch loading of 0.3 wt% to 0.5 wt% is commonly used, but published data for specific exposure sites is limited and field correlation remains necessary. Avoid combining the screw with copper-containing pigments at high temperature in unvented barrels, because copper can catalyze thermo-oxidative degradation at the melt film boundary.
Because polypropylene is not hygroscopic, pre-drying is normally unnecessary. However, surface condensation on cold pellets stored in an open silo at relative humidity above 60 % can generate splay and internal porosity in thick sections. If condensation is observed, a desiccant dryer at 70 °C for 1 h to 2 h is sufficient; temperatures above 80 °C risk pellet clustering in the hopper. The grade is not optimized for large injection-molded parts requiring high toughness, and it should not be substituted for PP-B or PP-R grades in pressurized hot-water piping.
The xylene soluble fraction measured by ISO 16152 is typically below 4 wt%. This is lower than many heterophasic impact copolymers and supports stiffness and creep resistance in woven sack fabric. Low-temperature impact remains limited; notched impact at 0 °C is typically less than 2.5 kJ/m². For applications requiring notched impact above 5 kJ/m² at 0 °C, an impact copolymer with a controlled rubber phase is more appropriate.
