| HS Code | 364820 |
| Density | 1.22 g/cm³ |
| Melt Flow Rate 230 C 2 16 Kg | 12 g/10 min |
| Tensile Strength At Yield | 30 MPa |
| Flexural Modulus | 3500 MPa |
| Notched Izod Impact Strength 23 C | 25 J/m |
| Elongation At Break | 10% |
| Heat Deflection Temperature 0 45 Mpa | 135 °C |
| Rockwell Hardness | R-100 |
| Mineral Content | 30% |
| Mold Shrinkage | 0.6 - 1.0% |
| Melt Temperature Range | 190 - 230 °C |
| Drying Temperature | 80 °C |
As an accredited Mineralblend PP Homopolymer PP-2800 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Mineralblend PP Homopolymer PP-2800 is packaged in 25 kg heat-sealed polypropylene bags, palletized and stretch-wrapped for safe transport. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with Mineralblend PP Homopolymer PP-2800, securely packed and stowed for safe transport. |
| Shipping | Mineralblend PP Homopolymer PP-2800 ships as non-hazardous polymer pellets in sealed 25 kg bags, supersacks, or hopper trucks. Store in dry, ventilated area away from heat and ignition sources. Avoid dust accumulation; use grounded equipment to prevent static discharge. Protect bags from damage and moisture during transit. |
| Storage | Store Mineralblend PP Homopolymer PP-2800 in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture contamination, dust accumulation, or cross-contamination. Avoid contact with strong oxidizers. Ensure proper labeling and maintain good housekeeping to minimize slipping hazards from spilled pellets. |
| Shelf Life | Shelf life is typically indefinite if stored in a cool, dry area and protected from sunlight, moisture, and contamination. |
Mineralblend PP Homopolymer PP-2800 used in tamper-evident closure injection moulding operates as a high-flow homopolymer with a melt mass-flow rate of 28 g/10 min when tested to ISO 1133-1:2022 at 230 °C and 2.16 kg. In high-cavitation stack tools of 48 to 96 cavities, gate-freeze time rather than plastication recovery determines cycle time. When the mould is filled at a melt temperature of 230–245 °C, cavity pressure sensors located behind the gate record fill pressures of 60–80 MPa; holding pressure is maintained between 35–45 MPa to avoid loading the tamper-evident bridges beyond their drop-down threshold. The compound addition ratio is 95–98 wt% PP-2800 base resin, with 2–5 wt% comprising a slip/antioxidant/acid-scavenger masterbatch and, where aseptic filling is used, a non-amine antistat. Pre-drying is mandatory only when storage relative humidity exceeds 60%, in which case 80 °C for 2 h in a desiccant dryer is applied; air conveying after drying must remain below a 40 °C dew point. Zinc stearate loadings above 0.05 wt% are not recommended because zinc accelerates thermo-oxidative chain scission of PP-H at elevated processing temperatures.
Food-contact compliance is premised on EU Regulation (EC) No 10/2011 as amended with an overall migration limit of 10 mg dm⁻² under the appropriate EN 1186 test condition, and on FDA 21 CFR 177.1520(c) for polypropylene homopolymer. The final closure is tested for torque retention, seal integrity and aged drop impact. Terminal products include tamper-evident closures for carbonated soft drinks, aseptic bottled water closures with 22 mm and 24 mm neck finishes, and pharmaceutical snap caps where low extractables and biological inertness are specified.
| Standard or regulation | Test method or clause | Application limit |
|---|---|---|
| EU Regulation (EC) No 10/2011 | Overall migration per EN 1186-1:2002 | 10 mg dm⁻² |
| FDA 21 CFR 177.1520(c) | Olefin polymers for food contact | End-test migration in food simulants |
| ISO 1133-1:2022 | MFR at 230 °C/2.16 kg | 28 g/10 min |
Thin-wall rigid food packaging processed by high-speed injection moulding uses Mineralblend PP Homopolymer PP-2800 as the base resin in monolayer and label-compatible structures. The production formulation for dairy tubs and lids is 90–97 wt% PP-2800, 3–7 wt% ethylene-α-olefin plastomer to reduce lid-hinge stress whitening at chilled temperatures, and 0.5–1.5 wt% nucleating masterbatch; the nucleating package raises crystallization temperature but can reduce Izod impact if addition exceeds 2 wt%. Melt temperature at the nozzle is 235–250 °C, mould wall temperature is 15–25 °C, and injection speed is set to fill a flow length to wall thickness ratio of 200:1 within 0.4–0.8 s. On production lines with 4–8 cavities and stack heights of 250–350 mm, clamp force per cavity is 30–50 t for wall sections of 0.45–0.9 mm. The process boundary is reached at 0.45 mm nominal wall thickness: below this dimension, unfilled PP-H with an MFR of 28 g/10 min shows cavitation imbalance and gate blush unless hot-runner valve-gate controllers are fitted with pressure-deviation alarms of ±2 MPa. Post-consumer recycled PP is tolerated at up to 20 wt% only when the recyclate is melt-filtered through 150 µm screens and blended off-line; higher addition rates generate viscosity scatter from high-molecular-weight gel particles that block the hot-runner valve gate. Food-contact compliance is verified to EU Regulation (EC) No 10/2011 and FDA 21 CFR 177.1520(c); terminal product types include margarine tubs, yogurt cups, cream-cheese containers, dairy lids and disposable food packaging used below 120 °C.
In three-layer BOPP film, PP-2800 functions as the core-layer base at 80–90 wt% of total film weight. The heat-sealable skin layers are propylene-ethylene-butylene terpolymers at 5–10 wt% per skin; the core formulation itself is 99.5–99.8 wt% PP-2800 with 0.2–0.5 wt% high-temperature antioxidant system, while antiblock and slip additives are restricted to the skin layers to keep the core haze contribution low. Cast sheet is extruded through a flat die at 230–255 °C onto a chill roll held at 20–30 °C; machine-direction orientation follows at 120–140 °C with a draw ratio of 4.5–5.5:1. Transverse stretching uses 155–170 °C and an orientation ratio of 8–10:1; a final relaxation of 2–4% in the TDO is required to balance MD/TD shrinkage to below 1% at 120 °C. Edge tear in the transverse stretch zone is aggravated when the cast-chill roll surface roughness exceeds Ra 0.15 µm or when melt temperature exceeds 260 °C, which produces an insufficiently crystalline sheet and reduces TDO track-holding tension. Compliance is evaluated to EU Regulation (EC) No 10/2011, FDA 21 CFR 177.1520(c), and where printed labels are involved, REACH Article 33 obligations for substances of very high concern in ink and coating layers. Terminal products include snack-food bags, confectionery twist-wrap, pressure-sensitive label face stock, overwrap for boxed goods and printed lamination films.
Slit-tape production for FIBC fabrics uses PP-2800 at 94–98 wt% with 1–3 wt% UV HALS masterbatch and 0.5–2 wt% calcium carbonate masterbatch for weaving stiffness and reduced filament-to-filament friction. The melt is extruded through a slit die at 210–230 °C into a water bath held at 20–35 °C; the quenched tape is slit to widths of 2.5–4.0 mm and drawn in a hot-air oven at 110–130 °C. Draw ratios of 6:1–7:1 produce tenacity values of 5–7 cN/dtex and hot-air shrinkage at 130 °C below 3%, which is acceptable for woven fabric dimensional stability after block-stitching. Raising the draw ratio above 7:1 increases residual shrinkage above 4%, causing local panel deformation and seam pucker; annealing with 5–10% relaxation at 120–140 °C is then mandatory to recover dimensional stability. The tape extrusion line uses drawing godet sets with diameters of 200–300 mm and gap-controlled nips to prevent necking; orientation oven air velocity is maintained below 12 m s⁻¹ to avoid tape oscillation. Compliance for the finished FIBC includes ISO 21898 for design and testing, REACH for raw-material registration and EU Regulation (EC) No 10/2011 where the bag contacts food-grade powders. Terminal products are 500–1500 kg flexible intermediate bulk containers for chemicals and minerals, woven geotextile tapes, carpet backing and rope filaments.
Extruded polypropylene homopolymer sheet for thermoformed deli containers and drinking cups represents a lower-pressure process than injection moulding, yet the same PP-2800 base resin is used at 100 wt% virgin loading with only a die-lip lubricant and a nucleating agent masterbatch at 0.2–0.5 wt% total. Sheet extrusion is carried out in a grooved-feed single-screw extruder with L/D 30–35:1 and melt temperatures of 230–250 °C; the sheet passes through a three-roll polishing stack set at 60–70 °C. Thermoforming uses contact heating at 160–180 °C, plug-assisted aluminium tooling at 50–70 °C and sheet thickness from 0.35 mm to 1.2 mm. The process boundary is sensitive to regrind: edge-scrap recycled flake added at more than 30 wt% can reduce the processing window to ±5 °C because polymer degradation raises the melt flow rate and lowers melt strength, producing visible thinning at the rim. Compliance is verified under EU Regulation (EC) No 10/2011 and FDA 21 CFR 177.1520(c) for food-contact use. Terminal product types are disposable drinking cups, microwave-safe meal trays, deli lids and bakery clamshells. PP-H without low-temperature toughening is not specified for freezer-to-microwave applications below -10 °C because of brittle failure at hinge lines; if sub-zero use is required, PP-2800 is blended at 80–90 wt% with a plastomer or impact copolymer at 10–20 wt%.
Mineral-filled compound production based on PP-2800 uses the homopolymer as the thermoplastic matrix at 50–70 wt%, combined with 20–40 wt% talc of median particle size d₅₀ ≤ 2 µm or calcium carbonate of d₅₀ 3–5 µm, 5–10 wt% ethylene-octene impact modifier for room-temperature toughness, and 0.4–0.8 wt% heat-stabilizer masterbatch. The compounding step is carried out in a co-rotating twin-screw extruder with L/D 40:1 and atmospheric vacuum venting at -0.06 MPa, using a screw profile with 2–3 kneading blocks before the vent and a specific mechanical energy input of 0.18–0.25 kWh/kg. The low-shear viscosity of PP-2800 decreases when peroxide vis-breaking is active; plant data from 40:1 L/D lines indicates that peroxide levels above 0.02 phr raise the final MFR above 45 g/10 min and cause the compounded melt to plate out mineral at the die. Published data for PP-2800 in this exact mineral-filled configuration is limited; the operating boundary is therefore established by pilot-scale evaluation on the intended twin-screw geometry. Compliance anchors are REACH for substance registration, RoHS Directive 2011/65/EU for electrical and electronic applications, End-of-Life Vehicles Directive 2000/53/EC for automotive components, and UL 94 HB for flammability classification where no flame-retardant additive is used. Terminal products include automotive interior substrates with tensile modulus above 2000 MPa tested to ISO 527-2:2012, electrical junction boxes, HVAC condensate housings and white-goods structural brackets. Amine-based antifog additives above 0.1 wt% should not be combined in the same formulation because residual amines accelerate acid-scavenger depletion and produce grey discoloration in filled PP-H compounds.
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Mineralblend PP Homopolymer PP-2800 is a mineral-filled polypropylene homopolymer compound supplied in natural or pre-coloured pellet form. The suffix -2800 is a manufacturer lot-stream identifier interpreted as a nominal melt flow rate of 28 g/10 min when tested according to ISO 1133-1:2022 at 230 °C under a 2.16 kg piston load; however, published data for this specific configuration is limited and certificates of analysis should be verified for each production lot. The homopolymer matrix contains no ethylene comonomer, which distinguishes the grade from mineral-filled PP impact copolymers and results in higher crystallinity, higher tensile modulus, and lower ambient-temperature ductility. The mineral phase in comparable 28 g/10 min PP-H compounds is generally an untreated or stearate-coated calcium carbonate or talc with a median particle size below 10 μm. Filler loading is not specified in the public designation; ash content measured according to ISO 3451-1:2019 should be obtained from the supplier. Typical density for mineral-filled homopolymer grades of this class is 1.05–1.13 g/cm³ under ISO 1183-1:2019, with tensile yield stress at 27–34 MPa under ISO 527-2:2012, flexural modulus at 2,400–3,200 MPa under ISO 178:2019, and notched Charpy impact at 23 °C of 2.5–4.5 kJ/m² under ISO 179-1:2020. The material is intended for injection moulding of dimensionally stable parts where isotropic shrinkage, heat deflection, and creep resistance under low load are more critical than sub-zero impact toughness.
Relative to an unfilled PP homopolymer of equivalent melt flow rate, PP-2800-class materials reduce linear mould shrinkage by approximately 30–50% and raise flexural modulus by a factor of 1.8–2.4. The penalty is a reduction in tensile elongation at break from 50–200% for unfilled PP-H to 4–10% for mineral-filled homopolymer, and a lowering of notched Charpy impact at 23 °C from 4–7 kJ/m² to 2.5–4.5 kJ/m². Against a mineral-filled PP impact copolymer with comparable filler loading, the homopolymer grade produces higher flexural modulus and heat deflection temperature, but at the cost of low-temperature ductility. Notched Charpy impact at -20 °C for PP-H PP-2800 typically remains below 2.0 kJ/m², while a mineral-filled PP impact copolymer often exceeds 4.0 kJ/m². Components requiring impact survival below -10 °C should not use PP-2800 without dynamic finite-element verification. Unlike 20% glass-fiber-reinforced PP-H, PP-2800 generates lower flexural modulus but offers more isotropic shrinkage and lower warpage because the particulate mineral phase does not create the orientation anisotropy of glass fibres. Surface finish is also smoother, with reduced fibre read-through on textured tool surfaces.
The principal differentiator is the homopolymer matrix. Because no ethylene-propylene rubber phase is present, stress whitening is lower under short-term load, but the material cannot accommodate the same strain as mineral-filled impact copolymers. This creates a clear use boundary: PP-2800 is suited for parts where dimensional tolerance and stiffness carry higher value than impact toughness. In applications such as appliance motor mounting brackets, electrical enclosure frames, and HVAC duct connectors, the strain during assembly is typically below 1.5%, which remains within the elastic region of the mineral-filled homopolymer. In contrast, snap-fit designs requiring repeated deflection above 2% may initiate brittle failure, particularly at weld lines or sharp corners.
The mineral phase also reduces shrinkage anisotropy when compared with talc-reinforced or glass-reinforced systems. In ISO 294-4:2018 plaque tests, comparable mineral-filled PP-H grades exhibit flow shrinkage of 0.8–1.2% and transverse shrinkage of 0.7–1.1%, a lower differential than glass-fibre compounds that often display a flow-to-transverse shrinkage ratio exceeding 1.5. This is significant in flat parts with ribs and bosses, where differential shrinkage drives out-of-plane warpage. The exact filler type supplied in PP-2800 should be confirmed with the manufacturer, because calcium carbonate and talc differ in nucleation behaviour, stiffness development, and moisture uptake. Talc-filled systems tend to shift crystallization onset to higher temperatures under differential scanning calorimetry at cooling rates of 10 K/min; calcium carbonate-filled systems generally produce lower flexural modulus at equal loading.
| Property | Test standard | PP-2800 class | Unfilled PP-H | Mineral-filled PP copolymer |
|---|---|---|---|---|
| Melt flow rate, 230 °C/2.16 kg | ISO 1133-1:2022 | 25–32 g/10 min | 20–35 g/10 min | 18–30 g/10 min |
| Density | ISO 1183-1:2019 | 1.05–1.13 g/cm³ | 0.895–0.910 g/cm³ | 1.03–1.12 g/cm³ |
| Tensile yield stress | ISO 527-2:2012 | 27–34 MPa | 30–38 MPa | 20–26 MPa |
| Tensile elongation at break | ISO 527-2:2012 | 4–10% | 50–200% | 20–50% |
| Flexural modulus | ISO 178:2019 | 2,400–3,200 MPa | 1,200–1,600 MPa | 1,800–2,600 MPa |
| Notched Charpy impact, 23 °C | ISO 179-1:2020 | 2.5–4.5 kJ/m² | 4–7 kJ/m² | 8–20 kJ/m² |
| Notched Charpy impact, -20 °C | ISO 179-1:2020 | 1.0–2.0 kJ/m² | 1.5–2.5 kJ/m² | 3.5–7.0 kJ/m² |
| Heat deflection temperature, 0.45 MPa | ISO 75-2:2013 | 105–125 °C | 90–105 °C | 95–110 °C |
| Mould shrinkage | ISO 294-4:2018 | 0.8–1.2% | 1.0–1.8% | 0.7–1.1% |
| Linear coefficient of thermal expansion | ISO 11359-2:2021 | 50–80 μm/m·K | 100–150 μm/m·K | 60–90 μm/m·K |
The values in the table are compiled from published datasheets for mineral-filled PP homopolymer compounds of comparable nominal melt flow rate. PP-2800 lot-specific certificates may differ, particularly when colour masterbatch or additive packages are introduced, and the tabulated ranges must not replace primary supplier data for safety-critical dimensions.
Moisture control is a boundary condition in mineral-filled PP-H because hygroscopic filler surfaces can carry moisture into the melt. When Karl Fischer titration indicates moisture above 0.05 wt%, pre-drying at 80 °C for 2–4 h in a desiccant dryer with a -40 °C dew point is required. Regrind above 30 wt% may require longer drying and can increase lot-to-lot viscosity variation. Melt temperature measured at the nozzle should be maintained between 220 °C and 250 °C. Below 210 °C the mineral phase increases shear heating requirements and thin-wall sections below 1.5 mm are prone to short shots; above 260 °C the risk of surface splay from filler-moisture steam and thermo-oxidative degradation of the PP matrix rises sharply when residence time exceeds 8 minutes at 230 °C.
Tool surface temperature should be held at 30–50 °C. The lower end improves cycle time, while the upper end enhances weld-line strength and dimensional consistency. A general-purpose three-zone screw with an L/D ratio of 20:1–24:1 and compression ratio of 2.5:1–3.5:1 is suitable. Shot size should be 30–80% of barrel capacity. Injection pressure at the transfer point in production-scale trials with mineral-filled PP-H usually falls between 70 MPa and 110 MPa, depending on flow length and gate geometry. Clamp force can be estimated at 3–5 kN/cm² of projected part area; inadequate clamp force on tools above 400 cm² projected area results in flash at the parting line.
Thermal degradation is a measurable processing risk because the mineral filler increases melt viscosity and can raise local shear heating. Long residence times in the barrel, especially above 8 minutes at 230 °C, reduce molecular weight and lower notched impact. In production-scale equipment with a 1,200 kN hydraulic injection moulding machine and a 24:1 L/D screw, gate blush and surface splay have been observed when the nozzle melt temperature was below 210 °C or when barrel residence time exceeded 10 minutes. The processor should monitor melt pressure repeatability and purge after any interruption longer than 15 minutes at full barrel temperature.
Shrinkage control requires packing pressure and gate seal time to be matched to the part. Gate seal time of 1.5–2.5 s/mm of wall thickness is a practical starting window. Insufficient packing results in sink marks opposite bosses and a drop in flexural modulus of the moulded part by up to 10% in the affected region. Because PP-2800 is a compounded grade, batch-to-batch filler dispersion should be controlled by ash content according to ISO 3451-1:2019 within ±0.5 wt% of the supplier’s nominal value. On twin-screw compounding lines with L/D 40:1, agglomerates larger than 50 μm have been associated with surface pitting and occasional notched impact scatter; filter-pack pressure rise across a 150–200 μm screen pack should be monitored as an indirect dispersion index.
The primary use case for PP-2800 is an injection moulded component requiring low warpage, predictable post-mould shrinkage, and resistance to deflection under low load at elevated cabin or enclosure temperatures. Typical production applications include automotive HVAC ducts and heater housings, appliance motor mounting brackets, electrical enclosure frames, and furniture hinges. These parts share a wall thickness of 1.8–3.5 mm and a requirement that no post-mould warpage exceed 0.3 mm over a 200 mm span. Heat deflection temperature of comparable mineral-filled PP-H under 0.45 MPa load according to ISO 75-2:2013 is 105–125 °C, which permits short-term exposure in under-bonnet air at 80–100 °C. The coefficient of linear thermal expansion of 50–80 μm/m·K under ISO 11359-2:2021 reduces thermal growth relative to unfilled PP-H and helps maintain snap-fit clearances.
Creep resistance is improved by the particulate mineral phase, but PP-2800 remains a semi-crystalline thermoplastic and should not be used for continuous structural loads above 8–10 MPa at 80 °C without creep-rupture testing according to ISO 899-1:2017. The homopolymer matrix is not suitable for continuous contact with strong oxidizing acids or halogenated solvents above 60 °C. Published data for this specific configuration is limited for flame-retardant and UV-stabilized variants; UL 94 classification must be confirmed from the supplier’s yellow card for the exact colour and thickness. Food-contact use should be evaluated under FDA 21 CFR 177.1520 for olefin polymers or EU Regulation 10/2011, with migration testing for the intended food simulant.
| Regulatory area | Standard or regulation | Boundary condition |
|---|---|---|
| REACH SVHC | 1907/2006/EC | Each SVHC below 0.1 wt% unless declared; verify lot certificate |
| RoHS restricted substances | 2011/65/EU and (EU) 2015/863 | Pb, Hg, Cd, Cr(VI), PBB, PBDE, DEHP, BBP, DBP, DIBP below 0.1 wt% in homogeneous material |
| Food contact | FDA 21 CFR 177.1520, EU 10/2011 | Subject to migration limits for intended food simulant and end-use temperature |
| UL 94 flammability | UL 94 | Base grade HB at ≥ 3.0 mm; verify supplier yellow card for colour and thickness |
| Automotive interior VOC and fogging | VDA 277, VDA 278 | Values depend on colour masterbatch and filler type; no blanket certification |
In electrical enclosures with glow-wire requirements, mineral-filled PP-H grades often meet IEC 60695-2-11 glow-wire ignition at 650 °C when halogen-free flame-retardant additives are incorporated. PP-2800 base grade should not be assumed to meet this test without formal certification from the compounder. For applications involving ultrasonic welding or hot-plate welding, the mineral filler raises the required weld collapse and heating time relative to unfilled PP-H; weld strength above 80% of parent tensile strength is difficult to achieve on contaminated or highly filled surfaces without reduced filler content at the weld interface.
