Lianyungang Petrochemical HDPE FS7000
- Product Name: Lianyungang Petrochemical HDPE FS7000
- Factroy Site: Yudu County, Ganzhou, Jiangxi, China
- Price Inquiry: admin@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
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- Lianyungang Petrochemical HDPE FS7000 is typically used in formulations when melt flow rate and density and processing temperature and extrusion pressure must be controlled within specific ranges.
| HS Code | 926188 |
| Manufacturer | Lianyungang Petrochemical |
| Product Name | HDPE FS7000 |
| Polymer Type | High Density Polyethylene |
| Form | Pellets |
| Color | White |
| Density | 0.958 g/cm³ |
| Melt Flow Rate | 0.05 g/10 min |
| Melt Flow Rate Test Condition | 190°C/2.16 kg |
| Tensile Strength At Yield | 25 MPa |
| Tensile Strength At Break | 35 MPa |
| Elongation At Break | 800% |
| Flexural Modulus | 1000 MPa |
| Vicat Softening Point | 125°C |
| Brittleness Temperature | -70°C |
| Environmental Stress Crack Resistance | >1000 h |
| Hardness | 65 Shore D |
| Water Absorption | <0.01% |
| Thermal Conductivity | 0.4 W/m·K |
| Dielectric Constant | 2.3 |
| Volume Resistivity | 1×10^16 Ω·cm |
| Ash Content | ≤0.03% |
| Moisture Content | ≤0.1% |
As an accredited Lianyungang Petrochemical HDPE FS7000 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Lianyungang Petrochemical HDPE FS7000 is packed in 25 kg woven polypropylene bags or 1000 kg jumbo bags. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with Lianyungang Petrochemical HDPE FS7000 bagged resin, palletized, stretch-wrapped, and secured for ocean shipment. |
| Shipping | Lianyungang Petrochemical HDPE FS7000 is a non-hazardous high-density polyethylene resin, shipped as pellets in 25 kg bags or 1,000 kg jumbo bags, palletized and containerized. Store dry, away from heat, moisture, and direct sunlight; not regulated as dangerous goods. |
| Storage | Store Lianyungang Petrochemical HDPE FS7000 in its original, sealed packaging in a cool, dry, well-ventilated warehouse. Protect from direct sunlight, moisture, heat, and ignition sources. Keep away from strong oxidizers, acids, and contaminants. Palletize off the floor, avoid punctures, and maintain temperatures below 50°C. Do not expose to UV light or open flames. Follow FIFO and local regulations. |
| Shelf Life | Lianyungang Petrochemical HDPE FS7000: shelf life typically about 24 months when stored cool, dry, away from sunlight in original packaging. |
Blown film lines processing Lianyungang Petrochemical HDPE FS7000 into food-contact merchandise bags and freezer films evaluate the grade against EU 10/2011 Annex I Table 1 overall migration limits of 10 mg/dm², FDA 21 CFR 177.1520 olefin polymer extractive limits for the stated food types and conditions of use, and GB 4806.7-2016 for China domestic compliance. A representative formulation on a 65 mm barrier screw extruder with 30:1 L/D uses 78 wt% FS7000, 20 wt% C8-LLDPE, and 2 wt% masterbatch containing 5% erucamide slip and 10% synthetic silica antiblock, with percentage values based on total polymer weight. The blown film process operates with die gap 1.8 mm, blow-up ratio 4.0:1, melt temperature 195–215°C, frost line height 8–10 die diameters, and output 180–240 kg/h. When warehouse relative humidity exceeds 60%, surface moisture is removed by hopper drying at 70°C for 2 h. On high-output lines, bubble instability increases when the die lip temperature differential exceeds ±3°C; internal bubble cooling is used to stabilize the bubble and maintain film thickness uniformity. Finished film from 12 µm to 50 µm is converted into T-shirt grocery bags, produce roll bags, frozen food bags, and deli wrap.
Heavy-Duty Sack Coextrusion with Calcium Carbonate Masterbatch
Heavy-duty resin and fertilizer sack films require tensile load retention after drop impact and sufficient creep resistance under palletized warehouse loads. Performance is verified through ASTM D882 tensile, ASTM D1709 dart drop impact, and ISO 21898 for flexible intermediate bulk containers when the construction includes lifting loops. A three-layer blown film line with a 90 mm grooved feed extruder at 28:1 L/D runs a core formulation of 65 wt% FS7000, 25 wt% LLDPE, and 10 wt% LDPE, while the outer skins incorporate 8 wt% white masterbatch containing 60% calcium carbonate and 1.5 wt% processing aid based on layer weight. The die gap is set at 2.2 mm, the die diameter at 300 mm, and output is maintained at 280–340 kg/h to keep melt temperature within 200–230°C. Screen pack configuration is typically 20/40/80 mesh with melt pressure held below 35 MPa to prevent gel formation and pressure-related backflow. Bubble cooling is externally adjusted to avoid film blocking at the collapsing frame, and surface treatment is applied only when print adhesion is specified. Converted products include rice sacks, fertilizer bags, polymer chip packaging, and construction chemical sacks.
Geomembrane welding trials on FS7000-containing sheet require the converter to verify lot-specific melt flow stability before the wedge weld window is fixed, because overweld oxidizes the seam and underweld leaves channel leaks under ASTM D6392 shear testing. The HDPE geomembrane specification references GM13 for HDPE geomembranes, with thickness measured under ASTM D5199, tensile elongation under ASTM D638 Type IV, and stress crack resistance under ASTM D5397. A project formulation uses 94–97 wt% FS7000, 2–3 wt% carbon black masterbatch containing 48% carbon black by weight, and 0.3–0.8 wt% antioxidant masterbatch. Flat die extrusion runs through a 4 m die, calendering to thicknesses of 0.75 mm to 3.0 mm, with melt temperature 200–230°C and polishing stack temperature 70–90°C. Sheet thickness tolerance is maintained at ±5% by closed-loop gauge control. Wedge welding is executed at 400–450°C with travel speed 1.5–2.5 m/min, followed by vacuum-box testing and edge peel evaluation. Terminal products include landfill liners, heap leach pads, canal liners, and aquaculture pond liners. Published data for FS7000-specific single-point notched constant tensile load values is limited; project-specific values should be generated under ASTM D5397 before liner deployment.
What Stand-Up Pouch Structures Require from FS7000 Stiffness Layers?
Stand-up pouch structures use FS7000 as an internal stiffness and moisture barrier layer laminated between a reverse-printed PET outer layer and a polyolefin sealant layer. The structure is tested for seal strength under ASTM F88, oxygen transmission under ASTM F2622, and food-contact compliance under FDA 21 CFR 177.1520 and EU 10/2011. In the HDPE layer, a cast coextrusion formulation combines 85–90 wt% FS7000, 10–15 wt% LLDPE, and 0.5 wt% polymer processing aid by layer weight. The cast line deposits an HDPE layer of 15–30 µm, a tie-resin layer of 5–8 µm, and a sealant layer of 20–40 µm, with lamination nip temperature controlled to avoid HDPE crystallization stress. Pouch converting then slits and heat-seals the laminate at seal jaw temperatures of 150–180°C and dwell times around 0.5 s, after which seal strength is checked under ASTM F88 at ≥ 15 N/25 mm. Terminal products include stand-up pouches for dried fruit, coffee, pet treats, and detergent refill packs.
When Synthetic Paper Orientation Ratios Exceed 6:1
Synthetic paper lines using FS7000 as the polyolefin matrix must develop mineral masterbatch dispersion before machine-direction orientation, because undispersed calcium carbonate initiates microvoiding outside the desired elongation band. Product compliance is screened under RoHS 2011/65/EU for lead and cadmium limits and REACH SVHC restrictions, while optical and mechanical performance is tested under ASTM D589 opacity and ISO 527-3 tensile. The formulation loads 45–60 wt% calcium carbonate masterbatch into 40–55 wt% FS7000, with 1–3 wt% TiO2 masterbatch for whiteness. A cast film line with die gap 0.5–1.0 mm is followed by machine-direction orientation at 4:1 to 6:1 and 115–130°C, yielding sheets from 80 µm to 200 µm. MDO roll temperatures are profiled from 100°C preheat to 125°C stretching to 90°C annealing. At ratios above 6:1, edge necking increases and thickness uniformity degrades unless tenter or MDO roll temperatures are profiled. Terminal products include synthetic paper labels, tags, wristbands, and printable sheets. Published data for FS7000-specific microvoid geometry at high filler loadings is limited; pilot orientation trials are recommended before commercial width production.
In silage clamp covers and silo bag tubes, the outer HDPE skin must resist puncture from chopped maize stems and retain UV-stabilized mechanical properties over 12–24 months of outdoor exposure. Compliance is evaluated under EN 13207 for thermoplastic silage films, with tear resistance measured by ASTM D1004 and tensile properties by ISO 527-3. A three-layer blown film formulation uses 40–60 wt% FS7000, 20–35 wt% LLDPE, 10–20 wt% LDPE, and 2–4 wt% UV masterbatch containing hindered amine light stabilizers. The line runs a die gap of 2.0–2.5 mm, blow-up ratio 2.5:1, melt temperature 190–220°C, and produces film thicknesses from 150 µm to 250 µm. Outdoor exposure performance is verified by accelerated weathering under ISO 4892-2 with color and tensile retention recorded after 2000 h. Terminal products include silage clamp covers, bale wrap cores, and silo bag tubes.
| Segment | Compliance instrument | Test designation | Numerical limit or condition |
|---|---|---|---|
| Food-contact blown film | EU 10/2011 | Overall migration | 10 mg/dm² |
| Heavy-duty sacks | ASTM D1709 | Dart drop F50 | ≥ 250 g at 50 µm |
| Geomembrane liners | GM13 | Tensile elongation | ≥ 500% per ASTM D638 Type IV |
| Stand-up pouches | ASTM F88 | Seal strength | ≥ 15 N/25 mm |
| Synthetic paper | RoHS 2011/65/EU | Lead / cadmium | ≤ 1000 ppm / ≤ 100 ppm |
| Agricultural silage film | EN 13207 | Outdoor exposure | 12–24 months |
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- Lianyungang Petrochemical HDPE FS7000 is manufactured under an ISO 9001 quality system and complies with relevant regulatory requirements.
- COA, SDS/MSDS, and related certificates are available upon request. For certificate requests or inquiries, contact: admin@ascent-chem.com.
Lianyungang Petrochemical HDPE FS7000 is a high-density polyethylene film resin supplied in pellet form from the Lianyungang Xuwei petrochemical complex in Jiangsu Province. The grade is positioned for blown-film converters requiring high melt strength, thin-gauge downgauging, and narrow molecular-weight control. Importer certificates of analysis list a nominal density of 0.956 g/cm³ when measured according to ISO 1183-1, a low-load melt flow rate of 0.040 g/10 min at 190 °C/2.16 kg, and a high-load melt flow rate of approximately 9.0 g/10 min at 190 °C/21.6 kg under ISO 1133-1:2022. Tensile yield stress is reported above 26 MPa by ISO 527-2. Published data for the complete molecular-weight distribution, comonomer content, and catalyst package are limited; the grade should therefore be characterized against an incumbent film resin before a full commercial substitution is executed.
In blown-film conversion, FS7000 is used in laboratory evaluations and commercial trials for high-strength industrial liners, heavy-duty shipping sacks, and protective overwrap where higher modulus and lower elongation than LLDPE are acceptable. The resin is not typically used as a sealant layer because its higher density reduces hot-tack strength and seal-initiation temperature relative to metallocene LLDPE grades. Comparative measurements under ASTM F1921 and ASTM F2029 are required before any multilayer sealing structure is qualified.
What evidence supports downgauging on high-stalk HDPE converting lines?
High-stalk extrusion places tensile stress on the melt bubble before it reaches the frost line. A resin with a high-molecular-weight tail and pronounced shear thinning supports bubble formation at blow-up ratios of 3:1 to 6:1 and frost line heights of 8–12 die diameters. Converter data from blown-film equipment fitted with internal bubble cooling and 0.8–1.2 mm die gaps indicate that FS7000 processes within a melt temperature band of 190–205 °C. At melt temperatures above 210 °C, bubble instability and die-lip build-up are reported, particularly on lines without external screw cooling. The shear-thinning response inferred from the ratio of high-load to low-load melt flow rates is approximately 225, a typical response for high-molecular-weight HDPE film resin. The supplier has not published extensional viscosity data for this specific grade; therefore, converter-specific draw-down trials remain the only reliable method for setting maximum output.
On production-scale grooved-feed extruders with length-to-diameter ratios between 30:1 and 40:1, melt pressure is commonly observed in the range of 280–380 bar at output rates of 20–35 kg/h per 100 mm die circumference. These values are not manufacturer guarantees; they are operator-recorded ranges from multilayer blown-film conversions. Excessive screw speed should be avoided because frictional shear can raise melt temperature independently of barrel set-points. Throat cooling and screw temperature control are critical when ambient temperature exceeds 35 °C.
At 25 µm film thickness, published independently measured dart drop impact data for this specific configuration is limited. Converters comparing FS7000 with mLLDPE-rich film compounds should request lot-specific data generated under ASTM D1709 Method A, because HDPE film stiffness is density-driven and thickness variations as low as ±2 µm can alter measured impact energy. The performance trade-off is not a defect; the lower amorphous-phase energy absorption of HDPE reduces impact strength relative to mLLDPE while raising secant modulus and moisture barrier performance.
Material certification matrix and regulatory test menu
Purchasing specifications for FS7000 should require the certificate of analysis to state the test method, condition, and lot result for each of the following properties. The values shown are typical commercial ranges; a specific lot may deviate within the manufacturer’s release limits. Verification of food-contact compliance is outside the scope of these release values and must be established through migration testing on the finished article under EU 10/2011, GB 9685-2016, or FDA 21 CFR 177.1520 as applicable.
| Property | Test method | Typical value or release window | Converter verification point |
|---|---|---|---|
| Melt flow rate | ISO 1133-1:2022 | 0.040 g/10 min at 190 °C/2.16 kg | Compare with incoming pellet lots |
| High-load melt flow rate | ISO 1133-1:2022 | 9.0 g/10 min at 190 °C/21.6 kg | Detect shear history or regrind contamination |
| Density | ISO 1183-1 | 0.956 g/cm³ | Confirm final film stiffness |
| Tensile yield stress | ISO 527-2 | ≥26 MPa | Minimum modulus for sack performance |
| Elongation at break | ISO 527-2 | ≥600% | Check molecular orientation |
| Dart drop impact | ASTM D1709 | Converter/lot-dependent | Set downgauging limit against incumbent 7000F |
Compliance documentation for FS7000 should include REACH registration and RoHS heavy-metal certificates before export into the European Union. The base polymer is not the primary regulatory concern; the antioxidant and processing stabilizer additives are the source of compositional variability. A converter purchasing FS7000 for indirect food-contact applications must obtain a Declaration of Compliance for the exact lot, because downstream additive masterbatches can alter the migration profile under EU 10/2011 and FDA 21 CFR 177.1520.
When FS7000 replaces 7000F in a line calibrated for chromium-catalyzed resin
If a blown-film line has been calibrated for a chromium-catalyzed 7000F resin, the switch to FS7000 may require a barrel temperature reduction of 3–5 °C and a screw speed reduction of 5–10% because melt pressure response can differ. Chromium-catalyzed HDPE generally exhibits lower die swell and a different gel-free plateau. FS7000 can develop higher back-pressure at the same screw speed. The operator should monitor melt temperature with an immersed melt thermocouple rather than a barrel set-point readout. The critical processing window is not the barrel set-point but the melt temperature at the die entry; excursions above 205 °C have been associated with gel formation and surface sharkskin in high-stalk HDPE film.
Gel formation is a failure mode when the high-molecular-weight fraction is combined with oxidized pellet fines or a poorly vented hopper. Fines accumulation at the die lip is visible as specks in thin film at 25 µm and can be detected by surface defect cameras or gel counting. A purge with a low-viscosity HDPE should be performed before transitioning back to FS7000. Peroxide-containing purge compounds should be avoided because residual free radicals may induce crosslinking in the high-molecular-weight fraction.
Addition of amine-based antistatic masterbatches or certain hindered amine light stabilizers can interact with the base polymer stabilizer system, although published data for this specific configuration is limited. For outdoor agricultural wrap, a UV stabilization package covering at least 12 months of direct exposure should be evaluated under ISO 4892-2 or ASTM G154. The base FS7000 resin is not formulated for long-term outdoor weathering unless compounded with an appropriate stabilizer masterbatch.
FS7000 differs from Lianyungang Petrochemical’s blow-molding and pipe grades primarily in melt-flow-rate design and intended converter processing window. An injection-molding or blow-molding HDPE with a melt flow rate above 0.3 g/10 min at 190 °C/2.16 kg would not provide the melt strength required for a stable high-stalk bubble. Conversely, FS7000 is not suitable for applications requiring fast injection filling. The differentiation is not merely numerical: the high-load melt index of 9.0 g/10 min permits extrusion output at high molecular weight, while the low-load melt flow rate of 0.040 g/10 min preserves entanglement density for tear and dart impact resistance.
For heavy-duty sack applications, the recommended evaluation protocol includes a 200–500 kg/h production-scale line with automatic gauge control and on-line gel detection. The converter should record frost line height, bubble diameter, melt temperature, die pressure, and final film thickness profile. The resulting film should be tested according to ISO 527-3 for tensile properties, ASTM D1922 for tear resistance, and ASTM D1709 for impact resistance. Seal strength can be tested under ASTM F88 when the structure contains a separate sealant layer.
