| HS Code | 494975 |
| Density | 1.08 g/cm³ |
| Melt Flow Rate 230 C 2 16 Kg | 12 g/10 min |
| Tensile Strength At Yield | 28 MPa |
| Tensile Modulus | 2500 MPa |
| Elongation At Yield | 6 % |
| Elongation At Break | 20 % |
| Flexural Modulus | 2400 MPa |
| Charpy Notched Impact Strength 23 C | 3.5 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 105 °C |
| Heat Deflection Temperature 1 80 Mpa | 60 °C |
| Melting Temperature | 164 °C |
| Shore D Hardness | 68 |
| Water Absorption 24h | 0.02 % |
| Mold Shrinkage | 1.2 % |
As an accredited Mineralblend PP Homopolymer PP-1800 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Mineralblend PP Homopolymer PP-1800 is packaged in 25 kg sealed polyethylene-lined kraft bags, palletized and shrink-wrapped for safe handling and transport. |
| Container Loading (20′ FCL) | Mineralblend PP Homopolymer PP-1800 loaded as 20′ FCL, secured dry and ventilated, ensuring safe, stable transport. |
| Shipping | Mineralblend PP Homopolymer PP-1800 ships as non-hazardous plastic granules in sealed PE-lined PP woven bags or FIBC bulk bags. Protect from moisture, direct sunlight, and excessive heat during transit. Store dry and ventilated. No special hazmat requirements; standard container or truck transport is suitable for global logistics. |
| Storage | Store Mineralblend PP Homopolymer PP-1800 in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture pickup and contamination. Avoid stacking excessively high to prevent bag damage. Protect from mechanical impact and sharp objects. Under proper conditions, shelf life is typically one year from date of manufacture. |
| Shelf Life | Shelf life is typically 2 years when stored indoors in original packaging, away from heat, moisture, and UV light. |
A thin-wall closure specification built around Mineralblend PP Homopolymer PP-1800 begins with cavitation count and valve-gate balance rather than a single melt flow rate limit. On high-speed hot-runner injection systems of 32–64 cavities and clamping force 2500–4500 kN, the resin is dry-blended at 96.0–98.5 wt % with 0.8–1.5 wt % slip/anti-block masterbatch, 0.2–0.8 wt % nucleating agent masterbatch, and 0.05–0.2 wt % antioxidant/acid scavenger. The resulting formulation is processed at melt temperature 220–250 °C, hot runner manifold set point 240–260 °C, mold temperature 20–40 °C, injection velocity 100–250 mm/s, holding pressure 30–50 MPa, and total cycle time 6–12 s. Regulatory compliance for food-contact closures rests on FDA 21 CFR 177.1520(a)(3)(i) for propylene homopolymer and EU Regulation 10/2011 overall migration limit of 10 mg/dm². Melt flow behavior is verified under ISO 1133-1:2022, density under ISO 1183-1:2019, and injection-molded shrinkage plaques under ISO 294-4:2018.
Process verification on production lines typically monitors cavity pressure decay after gate freeze because PP-H shrinkage anisotropy creates residual hoop stress in closure skirts. Typical unfilled PP-H mold shrinkage is 1.2–1.6 % parallel to flow and 1.4–1.8 % perpendicular to flow. Failure modes observed on production-scale equipment include gate blush when injection velocity exceeds 250 mm/s, short-shot imbalance across the valve-gate manifold when melt temperature drops below 220 °C, and cap skirt cracking at demolding when mold temperature falls below 15 °C. Pre-drying at 80 °C for 2–4 h is applied when the dry blend has been stored above 60 % relative humidity. Hot runner pressure drop per nozzle is normally kept within ±5 bar of manifold set point to limit cavity-to-cavity weight variation below 0.3 %.
| Additive/component | Typical loading | Primary function | Regulatory note |
|---|---|---|---|
| Mineralblend PP-1800 | 96.0–98.5 wt % | Base resin, narrow molecular weight distribution for hot-runner balance | FDA 21 CFR 177.1520(a)(3)(i), EU 10/2011 |
| Slip/anti-block masterbatch, oleamide/silica | 0.8–1.5 wt % | Closure removal torque reduction without organoleptic transfer | Specific migration limit must be verified under fatty food simulant |
| Nucleating agent masterbatch | 0.2–0.8 wt % | Increased crystallization temperature, reduced cooling time | Must not generate off-taste in aqueous food simulants |
| Antioxidant/acid scavenger | 0.05–0.2 wt % | Melt stability, neutralization of residual catalyst residues | Food-contact additive positive list per EU 10/2011 |
Finished articles range from still-water and juice closures of 28–38 mm diameter to food-container lids of 110 mm and induction-seal pharmaceutical caps. The grade is not recommended for carbonated soft drink closures when the package is stored at 4 °C with CO₂ headspace pressure above 0.35 MPa; impact-modified PP copolymer should replace the homopolymer in those conditions because of low-temperature brittleness and stress cracking.
In oriented tape extrusion, the quench history controls the size and uniformity of α-phase spherulites before the solid-state draw step. A single-screw extruder with L/D 30:1–33:1 and a slit die gap of 0.6–1.2 mm delivers Mineralblend PP-1800 at melt temperature 220–245 °C through a water bath held at 20–40 °C; cast film is slit and then drawn in a hot-air oven at draw ratios of 5:1–8:1. The formulation for UV-stable woven sacks charges Mineralblend PP-1800 at 93.0–97.0 wt %, HALS-based UV masterbatch at 1.5–3.0 wt %, calcium carbonate masterbatch at 2.0–5.0 wt % for surface slip and stiffness, and process aid at 0.1–0.3 wt %. Compliance for bulk woven sacks and FIBC rests on ISO 21898:2005; accelerated weathering is assessed by ASTM G154-16 and tensile properties of the oriented tape by ISO 527-3:2018.
Production bottlenecks in this process are dominated by fibrillation at excessive draw ratio and tape splitting at line speeds above 300 m/min when the hot-air oven temperature exceeds 160 °C. Annealing after drawing at 120–140 °C on godet rolls reduces post-extrusion shrinkage and increases tape tenacity; typical oriented PP tape reaches tensile strength of 5–7 g/denier with elongation at break 15–25 % under ISO 527-3:2018. Filler level above 5 wt % reduces drawability and should be avoided for high-tenacity baler twine. Edge trim and off-spec tape are recycled back to the extruder at 10–20 wt % only when regrind particle-size distribution is controlled to prevent melt filter blocking at 80–120 µm mesh screens. Crystallization kinetics are calibrated by differential scanning calorimetry under ISO 11357-7:2022 to ensure α-phase crystallinity is stable before final winding.
Finished downstream products include woven polypropylene sacks for cement, fertilizer, and rice, flexible intermediate bulk containers under ISO 21898:2005, baler twine, and woven carpet backing. Food-contact woven sacks require additional compliance with FDA 21 CFR 177.1520 and EU 10/2011; standard UV-stabilized tape is not automatically food-grade because the HALS package must be selected from the positive list. High-temperature exposure above 60 °C during storage of filled bags can create creep and seam load-carrying failure, particularly when FIBC safety factor is below 5:1 as defined by ISO 21898:2005.
Melt pressure stability before the breaker plate, not output rate alone, governs wall thickness consistency in PP-H pipe extrusion on Mineralblend PP-1800. The resin is charged at 97.5–98.5 wt % with carbon black masterbatch at 2.0–2.5 wt % for UV protection and antioxidant package at 0.1–0.5 wt %. A single-screw extruder with grooved feed section and L/D 30:1–36:1 uses a five-zone barrel profile: feed zone 180–200 °C, compression zone 210–220 °C, metering zone 220–230 °C, adapter 215–225 °C, and die 200–220 °C. Vacuum calibration operates at -0.06 to -0.08 MPa with water temperature 15–30 °C. Pipe dimensional specifications for industrial drainage are evaluated under DIN 8077:2008-03, general quality under DIN 8078:2008-03, and the system standard ISO 15494:2015.
| Standard/test method | Scope | Requirement for PP-H industrial pipe |
|---|---|---|
| ISO 15494:2015 | Industrial piping systems for PP | Dimensional, pressure derating, chemical resistance |
| DIN 8077:2008-03 | PP-H pipe dimensions | Outside diameter and wall thickness per SDR series |
| DIN 8078:2008-03 | General quality requirements and testing | Surface finish, internal stress, health/safety |
| ISO 9080:2012 | Long-term hydrostatic strength | Predicted service life at design stress |
| ISO 1167-1:2006 | Hydrostatic resistance | No failure at specified time and temperature |
Production failure modes include pipe sagging when melt temperature exceeds 230 °C and rapid cooling-induced internal stress when water temperature drops below 15 °C. Wall thickness variation is maintained at ±0.1 mm for diameters up to 110 mm by balancing vacuum and haul-off speed; larger diameters require additional internal air cooling. The final product range includes industrial drainage pipes from 32–315 mm outside diameter, laboratory chemical waste lines for pH 1–14 with temperature derating, and sewage ejector lines. PP-H pipe is not intended for potable water unless national approvals exist, and it is not rated for compressed gas service. Chemical resistance should be verified against the medium at operating temperature via immersion testing under ISO 175:2010.
A cleanroom injection molding cell running Mineralblend PP-1800 for medical disposables must first address leachables formation and gamma-induced oxidative embrittlement. The formulation charges the resin at 98.0–99.5 wt %, a hindered phenol/phosphite antioxidant package at 0.1–0.5 wt %, and a processing aid at 0.05–0.2 wt %; slip additives are omitted because they raise extractable levels in finished devices. Injection molding is performed on 1000–2000 kN hydraulic or hybrid machines with hot runner valve gates, melt temperature 220–245 °C, mold temperature 20–40 °C, and cycle time 18–35 s for multi-cavity labware. The cleanroom is maintained at ISO 14644-1 Class 7 or better, and the quality system follows ISO 13485:2016. Biocompatibility is established through ISO 10993-5:2009 cytotoxicity, ISO 10993-10:2010 sensitization, and USP Class VI where specified.
Gamma sterilization compatibility is validated at absorbed doses of 25–50 kGy per ISO 11137-1:2006; doses above 50 kGy may cause yellowing and reduce elongation at break, which must be quantified on tensile bars under ISO 527-2:2012. If the dry blend has been stored at relative humidity above 60 %, surface moisture is removed at 80 °C for 2–4 h because uneven moisture generates flash and splay in thin-walled petri dish cavities. Production-scale failure modes include particulate contamination from static-attracted dust on the runner system and sink marks at gate bosses exceeding 0.02 mm depth. Terminal articles include specimen cups, petri dishes, centrifuge tubes, and diagnostic consumable housings. The material is not appropriate for long-term implants or repeated autoclave service above 121 °C unless component-level validation demonstrates no deformation; published data for this specific grade under repeated autoclave cycling is limited.
Sheet extrusion for single-use foodservice trays built on Mineralblend PP-1800 typically adopts a monolayer architecture with thickness tolerance of ±0.05 mm across a sheet width of 600–1200 mm. The resin is charged at 90–96 wt % with color masterbatch at 2–4 wt %, slip/anti-block masterbatch at 1–2 wt %, and nucleating agent at 0.2–0.5 wt %. A flat die line with melt pump and polished three-roll stack operates at melt temperature 220–250 °C and roll stack temperature 70–90 °C; thermoforming uses plug-assisted molds at 20–60 °C and draw ratios up to 2.5:1. Compliance for food contact follows FDA 21 CFR 177.1520 and EU 10/2011, with overall migration limited to 10 mg/dm² under the intended food simulant. Finished products include deli cups, produce trays, and hinged food containers. Freezer-grade applications below 0 °C should be avoided with unfilled homopolymer because impact failures occur at the hinge and sidewall radii; blending with 10–20 wt % heterophasic PP copolymer is the standard industrial remedy when low-temperature drop resistance is specified.
Compounding Mineralblend PP-1800 with talc for automotive air management moves the primary failure mode from impact brittleness to shrinkage anisotropy and weld-line weakness. The base resin is charged at 62–74 wt %, talc filler at 20–30 wt %, an elastomer impact modifier at 5–10 wt %, heat stabilizer at 0.3–0.8 wt %, carbon black masterbatch at 2–3 wt %, and coupling agent at 0.5–1.5 wt %. Twin-screw compounding uses L/D 40:1–48:1, screw speed 400–800 rpm, and barrel temperature 200–230 °C. Injection molding of HVAC ducts and fan shrouds runs at melt temperature 220–240 °C, mold temperature 50–80 °C, and clamp force 5000–10000 kN. Quality management follows IATF 16949:2016; material compliance includes REACH Regulation (EC) No 1907/2006, RoHS Directive 2011/65/EU, and VOC/fogging performance under VDA 278.
On production lines, warpage in talc-filled PP-H is driven by the orientation of platy talc particles along flow lines, producing differential shrinkage parallel and perpendicular to flow; tooling compensation is typically required when mold shrinkage measured under ISO 294-4:2018 exceeds 0.8–1.2 % in either axis. Weld-line strength in multi-gated HVAC housings is tested under ISO 527-2:2012 and frequently controls the injection gate location. Continuous service above 110 °C in under-hood environments should be validated by heat aging under ISO 188:2011; published data for Mineralblend PP-1800 in this specific talc-filled configuration is limited, so OEM component-level approval is required before series production. Finished products include HVAC air ducts, defroster nozzles, battery cooling fan shrouds, and non-structural air resonator shells. The compound is not intended for load-bearing under-hood structural parts or for continuous contact with engine coolant above 90 °C without additional hydrolysis stabilizers.
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Mineralblend PP Homopolymer PP-1800 is a compounded polypropylene homopolymer grade containing a platy mineral reinforcement dispersed in a medium-flow matrix. The product designation is assigned to injection-molding applications where flexural stiffness, reduced mold shrinkage, and higher heat distortion resistance are required relative to unfilled polypropylene homopolymer. Melt flow rate measured under ISO 1133-1:2022 at 230 °C with a 2.16 kg load is specified as 18 g/10 min. Density determined by ISO 1183-1:2019 is typically 1.05 g/cm³, corresponding to a nominal mineral loading of 20 wt%. The ash content specification is 19 wt% to 21 wt% when tested according to ISO 3451-1:2019 at 850 °C. The grade is supplied as natural and black pellets for thin-wall injection molding with nominal wall sections from 1.2 mm to 3.0 mm.
The platy mineral filler is controlled to a median particle size of 5 µm to 12 µm by laser diffraction under ISO 13320:2020. This particle-size window is selected to maximize flexural modulus without dropping notched Izod impact below 3.0 kJ/m² at 23 °C. The base matrix is a reactor-grade polypropylene homopolymer with a xylene-soluble fraction below 5 wt% per ISO 16152:2005, which contributes to the elevated heat distortion temperature after filler incorporation. Apparent viscosity at 230 °C and 1,000 s⁻¹ is approximately 45 Pa·s when measured by capillary rheometry according to ISO 11443:2021, placing the grade between low-flow impact copolymers and general-purpose unfilled homopolymers for injection pressure requirements.
On a production-scale injection-molding machine with 1,200 kN clamp force, a 30 mm diameter general-purpose screw, and a cold runner system, melt temperatures between 230 °C and 250 °C are required. Mold temperature is maintained at 30 °C to 50 °C with turbulent-flow temperature control units. Injection velocity is set to fill the cavity in 0.5 s to 1.5 s, and hold pressure is controlled at 60% to 80% of measured peak cavity pressure. Back pressure during screw recovery is maintained at 0.5 MPa to 1.0 MPa. Screw rotation speed is limited to a peripheral velocity of 0.15 m/s to 0.25 m/s on a 30 mm diameter screw to limit filler breakage and shear heating.
Compounding control for PP-1800 is performed on a co-rotating twin-screw extruder with an L/D ratio of 40:1 and side-feeding of the mineral filler after the first barrel section. This sequence minimizes attrition of the platy filler and reduces breakdown of the heat-stabilizer package. Residence time in the melt zone is controlled at 45 s to 60 s at 200 °C to 220 °C to prevent peroxide residues from degrading the homopolymer matrix. Incoming melt flow rate of the base resin is targeted at 25 g/10 min before filler addition; final let-down brings the product to 18 g/10 min.
Lot-to-lot variation in melt flow rate for PP-1800 is controlled within ±1.5 g/10 min. On a 1,200 kN press, this variation corresponds to a fill pressure fluctuation of approximately 0.8 MPa when molding a 0.8 mm wall thickness plaque. Filler content variation of ±0.5 wt% is monitored by ash analysis; at the upper limit of 21 wt%, notched Izod impact decreases by 0.2 kJ/m² relative to the nominal value.
The main performance difference is the filler-induced increase in flexural modulus. In comparative testing using ISO 527-2:2012 type 1A specimens and ISO 178:2019 three-point bending, PP-1800 exhibits a tensile stress at yield of 31 MPa and a flexural modulus of 2,200 MPa. An unfilled PP homopolymer with a comparable melt flow rate typically exhibits a tensile stress at yield of 34 MPa and a flexural modulus of 1,450 MPa. The modulus differential of approximately 52% allows wall-thickness reductions in stiffness-limited ribs and bosses, provided that the lower notched Izod impact of 3.5 kJ/m² at 23 °C per ISO 180/A is accepted in the part design. An impact-modified PP copolymer may show a notched Izod impact of 20 kJ/m² or higher at 23 °C, but its flexural modulus is typically near 1,300 MPa and its heat distortion temperature is lower.
| Property | Test standard | PP-1800 | Unfilled PP homopolymer | Impact-modified PP copolymer |
|---|---|---|---|---|
| Melt flow rate | ISO 1133-1:2022, 230 °C/2.16 kg | 18 g/10 min | 8–12 g/10 min | 20 g/10 min |
| Density | ISO 1183-1:2019 | 1.05 g/cm³ | 0.905 g/cm³ | 0.90 g/cm³ |
| Tensile stress at yield | ISO 527-2:2012 | 31 MPa | 34 MPa | 25 MPa |
| Flexural modulus | ISO 178:2019 | 2,200 MPa | 1,450 MPa | 1,300 MPa |
| Notched Izod impact, 23 °C | ISO 180/A | 3.5 kJ/m² | 4.0 kJ/m² | 20 kJ/m² |
| Heat distortion temperature, 1.82 MPa | ISO 75-2:2013 | 62 °C | 55 °C | 52 °C |
| Heat distortion temperature, 0.45 MPa | ISO 75-2:2013 | 105 °C | 90 °C | 80 °C |
| Mold shrinkage parallel | ISO 294-4 | 1.1% | 1.8% | 1.5% |
| CLTE flow direction | ISO 11359-2:2021 | 55–65 µm/m·K | 100 µm/m·K | 85 µm/m·K |
The representative values are based on conditioned specimens prepared from production lots and are not guaranteed specification limits. The certificate of analysis supplied with each batch takes precedence for lot-specific conformance. Differences in specimen preparation, conditioning, and testing laboratory can produce variations of 5% to 10% for tensile and flexural properties.
Mold shrinkage in PP-1800 is anisotropic. Measurements per ISO 294-4 on a 60 mm × 60 mm × 2 mm plaque give a parallel-to-flow shrinkage of 1.1% and a normal-to-flow shrinkage of 1.3%. The difference becomes more pronounced at injection velocities above 80 mm/s because platy filler particles orient in the flow direction. Tooling intended for unfilled PP homopolymer must be rescaled: the expected parallel shrinkage is approximately 40% lower than the 1.8% typical of unfilled PP homopolymer. Warpage on large panels is controlled by locating gates to create radial flow or by using film gates that reduce orientation gradients.
Compared with a calcium carbonate-filled PP homopolymer at the same 20 wt% filler loading, PP-1800 provides a lower coefficient of linear thermal expansion in the flow direction. Values measured by ISO 11359-2:2021 are typically 55 µm/m·K to 65 µm/m·K for PP-1800, while a similarly filled calcium carbonate grade may show 70 µm/m·K to 80 µm/m·K. This difference is relevant for bracketed assemblies with steel fasteners.
Weld-line tensile strength measured on a double-gated specimen in accordance with ISO 527-2:2012 is approximately 18 MPa, a reduction of 40% from the bulk tensile stress at yield. Because the filler reduces the interpenetration of polymer chains across the weld line, gate placement must avoid weld lines in load-bearing ribs and boss regions. Vents should be placed along the weld path; inadequate venting produces gas burns that further reduce weld-line strength.
PP-1800 is supplied in 25 kg polyethylene-lined bags or 1,000 kg octabins. Unopened packages stored at 10 °C to 35 °C and 30% to 60% relative humidity remain processable for 24 months from the production date. If storage relative humidity exceeds 60%, or if cold pellets are transferred to a warm molding room, pre-drying is required in a desiccant dryer with a dew point below -30 °C. Drying at 80 °C for 2 h to 3 h reduces residual moisture below 0.05 wt% when measured by ISO 15512:2019. Moisture above this limit produces surface splay and increases the risk of internal voids in thick sections.
The polypropylene homopolymer base resin is manufactured to comply with 21 CFR 177.1520(c) for olefin polymers used as a component of food-contact articles, subject to end-use extractive testing and any applicable limitations in 21 CFR 177.1520. The mineral filler and stabilizers are selected from REACH-registered substances and do not intentionally introduce lead, mercury, cadmium, or hexavalent chromium above the threshold levels stated in Directive 2011/65/EU as amended by (EU) 2015/863. Certificates of analysis include screening by IEC 62321 methods. Flammability classification for natural and black versions is UL 94 HB at 1.5 mm and 3.0 mm thickness.
Post-industrial regrind of PP-1800 may be re-used at a maximum addition of 15 wt% to virgin material if the melt flow rate of the blend remains within 15 g/10 min to 21 g/10 min under ISO 1133-1:2022. Higher regrind fractions shift melt flow upward and reduce notched Izod impact below 3.0 kJ/m². The grade should not be blended with high-acid-content recycle streams; acidic residues reduce filler-matrix adhesion and produce delamination in thin sections. Avoid processing at barrel temperatures above 280 °C for residence times exceeding 15 min; oxidative chain scission increases melt flow rate above 21 g/10 min and can cause silver streaking, screw drool, and loss of mechanical strength.
Gate-freeze time and hold-pressure duration require adjustment. In a 1,000 kN hot-runner mold producing a 0.8 mm-thick structural insert, cavity-pressure instrumentation with a piezoelectric sensor behind the gate has recorded gate-seal delay of approximately 0.7 s relative to unfilled PP homopolymer. Hold pressure must therefore be maintained for 5 s to 7 s after velocity/position switchover, until cavity pressure decays to 25 MPa. The mineral filler increases thermal diffusivity and reduces heat capacity per unit volume, so cooling time in the part may decrease by 5% to 10%; however, this benefit is offset by higher injection pressure required to fill the same flow length. Injection peak pressure measured at the machine hydraulic system may increase from 70 MPa to 90 MPa in thin-wall tools depending on gate size and wall thickness.
Published long-term creep and heat-aging data for this exact mineral blend is limited. For components continuously exposed to temperatures above 90 °C, part-specific qualification should be performed using ISO 188:2023 for accelerated air aging and ISO 899-1:2017 for tensile creep, with agreed property retention limits. Continuous use at 110 °C without additional heat stabilization is not recommended.
Typical production applications include automotive underhood cover plates, HVAC support brackets, and appliance structural panels where the part design cannot tolerate the 1.8% shrinkage of unfilled PP homopolymer and where a 50% higher flexural modulus permits a reduction in nominal wall thickness from 3.0 mm to 2.5 mm while maintaining bending stiffness. The grade is not intended for sub-zero impact-sensitive components because notched Izod impact at -20 °C typically falls below 2.0 kJ/m² under ISO 180/A.
