As supplied, POLYBATCH® Canyon 10290U/4 Concentrate Based In LLDPE is a pelletized polyolefin color concentrate with an LLDPE carrier. The end-use data below are written for converters; specific pigment chemistry and additive loading are not fully disclosed in the abbreviated trade designation, so all regulatory certifications require confirmation from LyondellBasell technical documentation. The application categories are limited to polyethylene-compatible melt processes; solvent-borne systems and polar polymers are outside the compatibility window.

Where blown film lines process LLDPE-rich blends at die diameters above 250 mm, POLYBATCH® Canyon 10290U/4 Concentrate Based In LLDPE is introduced gravimetrically at the main feed throat alongside LLDPE or LDPE pellet feed. Direct food-contact film compliance falls under EU Regulation (EU) No 10/2011 with overall migration tested per EN 1186-1:2002, and in the United States the finished olefin article falls under FDA 21 CFR 177.1520(c) only where the concentrate components are cleared for the same use conditions; for non-food flexible packaging, REACH Regulation (EC) No 1907/2006 and EU Directive 2011/65/EU RoHS heavy-metal restrictions apply to the supplied concentrate. The addition ratio is set by spectral reflectance targets under D65/10° per ISO 11664-4:2008; starting trials are run at 3 wt%, 4 wt%, and 5 wt% for opaque monolayer film, with 2 wt% reserved for tinted films below 30 µm gauge. Production-scale blown film lines configured with single-screw extruders of L/D 25:1, barrier screws, die gaps of 1.5–2.2 mm, melt temperatures of 190–220 °C, and blow-up ratios of 2.5:1–3.0:1 provide continuous melt-phase dilution; field observations on HDPE-carrier alternatives indicate the LLDPE carrier lowers head pressure and can reduce melt fracture at screw speeds above 75 min⁻¹, though pellet stratification in gravimetric hoppers may appear without an anti-bridging stirrer. Terminal products are colored LLDPE/LDPE packaging films, retail produce bags, freezer films, and industrial liners.

What Injection Molding Melt-Temperature and Injection-Speed Boundaries Appear When an LLDPE-Carrier Concentrate Enters the Feed Stream?

On injection molding lines producing thin-wall polyethylene packaging at wall thickness 0.8–1.2 mm, the concentrate is used at 1.5–3.0 wt%, while opaque consumer goods take 3–5 wt%; published data for this specific SKU in gas-assisted or foamed injection molding is limited. Mechanical-property verification references ASTM D638-14 for tensile yield, ISO 178:2019 for flexural modulus, and ASTM E1347-06 or ISO 7724-3:1984 for post-molding colorimetry. Machines with L/D 20:1 general-purpose screws, reverse-cut check rings, and clamp-force capacity above 80 t for multi-cavity thin-wall tools are set at melt temperature 200–230 °C, mold temperature 20–40 °C, and injection speed 40–80 mm/s for single-gate cold-runner tools. The LLDPE carrier depresses melt viscosity at processing shear rates, which reduces plasticating time and can shift screw recovery time relative to natural PE; operators observe gate blush and flow-line visibility are minimized when hopper pre-blending is performed in a low-speed tumble blender of 50–80 kg batch size. Incompatibility with PET, polycarbonate, PVC, or styrenics makes LDPE purge essential after contamination. Terminal products include thin-wall caps, overcaps, containers, and household utility parts.

Rotational Molding Requires Particle-Size-Matched Color Concentrate Grinding to Avoid Surface Specking

The pellet concentrate must be ground by the formulator to a particle-size distribution within the base LLDPE powder’s range; otherwise surface specking and uneven color intensity appear on the inner surface after release. Rotational molding grade LLDPE powder at 35 mesh (500 µm) is charged with POLYBATCH® Canyon 10290U/4 Concentrate Based In LLDPE. Compliance for water-contact or food-contact tanks references FDA 21 CFR 177.1520(c), EU Regulation (EU) No 10/2011, and NSF/ANSI 61 for potable-water contact where applicable; mechanical acceptance is tested according to ISO 179-1:2010 for Charpy impact, ASTM D256-10 for Izod impact, and ASTM D638-14 for tensile properties. Dry-blend addition ratio is 3–4 wt% for fully opaque exterior parts; 2 wt% may be adequate for pastel tinting, but the final ratio is controlled by oven peak internal air temperature and part wall thickness. Production machines are biaxial or rock-and-roll units with oven temperatures 260–300 °C, peak internal air temperature 180–200 °C, controlled cooling at 10–15 °C/min until mold release, and total cycle times of 20–40 min for wall thickness 3–6 mm. Process engineers on single-arm carousels note that inner-outer surface color difference may exceed ΔE*ab 2 when wall thickness exceeds 6 mm; correction is made by reducing peak internal air temperature by 5–10 °C or increasing cooling air flow. Terminal products include rotomolded storage tanks, agricultural hoppers, insulated coolers, and playground components.

Because extrusion blow molding accumulates regrind streams with repeated thermal history, the concentrate is fed at 2–4 wt% into the main resin feed stream; regrind-containing formulations are run at the lower addition level. Food-contact finished articles are controlled under FDA 21 CFR 177.1520(c) and EU Regulation (EU) No 10/2011, with migration testing according to EN 1186-1:2002; industrial chemical packaging additionally requires compatibility testing under UN 6.1.5.3 where hazardous goods are packed. Accumulator-head blow molding lines with screw diameters 60–90 mm and L/D 24:1 operate at melt temperatures 190–215 °C, blow pressure 0.6–0.8 MPa, and mold temperatures 10–20 °C; lower die swell relative to HDPE-carrier masterbatches may require parison programming adjustment to prevent wall thinning at the pinch-off. Terminal products include extrusion blow molded bottles, industrial containers, automotive windshield-washer tanks, and household chemical packaging.

When Extrusion Coating Thins the Film Gauge Below 20 µm, Let-Down Ratio Must Compensate for Spectral Reflectance Loss

High-speed extrusion coating lines running at line speeds above 150 m/min impose short residence time and high shear; for paperboard and flexible substrates the concentrate is pre-blended at 6–10 wt% because color intensity is attenuated at coating thicknesses of 15–25 µm. Compliance for food-contact coated paperboard includes EU Regulation (EU) No 10/2011 for the plastic layer, FDA 21 CFR 177.1520(c) for the olefin food-contact polymer, and BfR Recommendation XXXVI for paper and board placed on the EU market; migration test methods include EN 1186-2:2002 and EN 13130-1:2004. Extrusion coating machinery with 90–120 mm single-screw extruders, L/D 30:1, flat dies of 1,200–1,800 mm width, and air gaps of 150–200 mm processes the melt at 230–260 °C; the LLDPE carrier may reduce neck-in at the die exit, while chill roll temperature at 12–18 °C and corona treatment above 40 mN/m control pinning and subsequent lamination. Published data for this specific concentrate in extrusion coating is limited; because the LLDPE carrier lacks polar comonomer, the material should not be used in structures requiring EVA-based adhesion to aluminium foil without an additional adhesive layer. Terminal products include coated paperboard cups, foodservice trays, and barrier sachet substrates.

HDPE Pipe and Conduit Color Masterbatch Dilution Compatibility Across ISO 9080 Pressure-Class Resins

For HDPE pipe and conduit dilution, the LLDPE carrier in POLYBATCH® Canyon 10290U/4 Concentrate Based In LLDPE is added at 2–4 wt% for non-pressure conduit and at 1.5–2.0 wt% when the base pipe resin is PE100 or PE100-RC pressure-class extrusion grade; published data for this specific SKU in PE100-RC is limited and full verification according to ISO 9080:2012 and ISO 1167-1:2006 is required for pressure-rated pipe. Compliance for potable-water pressure pipe includes NSF/ANSI 61, DVGW W 270, and WRAS BS 6920 where applicable; for underground conduit the relevant standards are ASTM D3350-21 for compound property designation and ISO 4427-2:2019 for PE water pipe dimensions and performance. Pipe extrusion lines use single-screw extruders with grooved-feed sections, L/D 30:1–36:1, screen packs of 60/80/100 mesh, and melt temperatures of 190–220 °C; the LLDPE carrier lowers the fusion temperature relative to high-density PE and disperses within the first 8–12 D of the screw, but excessive dosage leads to melt-pressure fluctuation at the screen changer. Terminal products include non-pressure conduit, cable ducts, agricultural drainage pipe, and colored industrial water piping.