|
HS Code |
433299 |
| Chemicalname | Polyvinylidene Fluoride |
| Appearance | White or translucent granular |
| Meltflowindex | 5-25 g/10 min (at 230°C/5kg) |
| Density | 1.77-1.79 g/cm3 |
| Meltingpoint | 170-177°C |
| Tensilestrength | 40-55 MPa |
| Elongationatbreak | 20-50% |
| Thermalconductivity | 0.17 W/m·K |
| Dielectricconstant | 8.4 (at 1 kHz) |
| Waterabsorption | <0.04% |
| Shoredhardness | 75-80 |
| Processingtemperature | 200-240°C |
As an accredited PVDF Extrusion Grade factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | PVDF Extrusion Grade is typically packaged in 25 kg moisture-proof, multi-layer kraft paper bags with inner polyethylene liners for optimal protection. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for PVDF Extrusion Grade: 12 metric tons, packed in 25kg bags on pallets, safely secured for transport. |
| Shipping | PVDF Extrusion Grade is shipped in sealed, moisture-resistant bags or drums, typically containing 25 kg per bag. Packages are clearly labeled with product details and hazard information. Transport is conducted in accordance with local and international regulations, ensuring protection from physical damage, heat, and contamination during transit and storage. |
| Storage | PVDF Extrusion Grade should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of heat. Keep containers tightly closed to prevent moisture absorption and contamination. Store away from incompatible materials such as strong acids, bases, and oxidizing agents. Proper storage ensures material stability and maintains optimal processing properties for extrusion applications. |
| Shelf Life | PVDF Extrusion Grade typically has a shelf life of 24 months when stored in original packaging under cool, dry conditions. |
Competitive PVDF Extrusion Grade prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615365186327 or mail to sales3@liwei-chem.com.
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Tel: +8615365186327
Email: sales3@liwei-chem.com
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The challenges found in extrusion lines have shaped the way we manufacture and refine PVDF (Polyvinylidene Fluoride) resins. Years of handling the quirks and burdens of continuous output have taught us that not all PVDF is built for smooth, strong, and consistent extrusion. Our PVDF Extrusion Grade steps up with real, measurable advantages in the shop floor environment, supporting high-yield output and refined finish for sheet, film, tubing, and wire insulation applications.
Our process control starts from PVDF polymerization, tuned for a melt flow index that makes feeding reliable and minimizes shear instability. There’s no quick fix in extrusion; you want homogeneous melt with stable viscosity, especially at the interface of heat and pressure. This extrusion grade keeps its molecular weight in the right range to avoid sag, drawdown, and surface melt fracture at typical temperatures, from around 210°C to 250°C, and can be run up to higher speeds without sudden process upset. Smooth, glass-like output comes through consistently when extruding films as thin as 40 microns and beyond.
Formulation is key. Years of adjusting additive loadings, chain transfer agents, and residual monomers in the reactor have eliminated foaming and drying issues, which can cause surface weakness and pinholes that don’t become visible until end use. Our manufacturing lines monitor chromaticity closely; so slight off-colors from batch to batch are extremely rare. Material from our plant resists whitening and streak formation.
Operators and engineers know that what matters is not just lab data but how the resin runs in your actual dies. Our teams work regularly with extrusion OEMs, checking both low- and high-speed conditions. PVDF Extrusion Grade performs with consistent torque demand, so the risk of screw hang-up or surging goes down. This means fewer adjustments, greater uptime, and a surface finish that stands up in cable jacketing where visual quality defines acceptance rates.
Whether running film, tubing, sheets, or fiber, customers have reported sharp melt strength, which means less sag in vertical dies and fewer deformations at exit. Complex-shaped profiles or multiple-layer co-extrusions demand a resin that doesn’t interact badly with tie-layers, and our grade has a reputation for non-stick die release and less spew-out, based on hundreds of thousands of meters of actual output.
Working with this PVDF grade every day, we know its flame resistance isn’t an afterthought. This resin maintains V-0 rating in testing and keeps its dielectric strength well beyond 100 V/mil, supporting wire and cable lines that need to meet market certifications. Solvent resistance has been measured for years with ketones, aromatics, and dilute acids, so manufacturers rolling out chemical-resistant pipes or liners rely on these properties for safety guarantees.
Compared to standard PVDF molding grades, the extrusion product’s polymer chain structure is less prone to unzipping at stress points, so impact strength and tensile elongation track well in final profiles. If you’re making components bound for harsh outdoor, UV, or weather-exposed installations, our extrusion-grade resin keeps its toughness and color count even after months in field trials.
Thousands of tons of PVDF pass through our plant each year, destined for customers making everything from milky translucent cable coatings to crystal-clear films for electronics. This extrusion grade adapts well, letting converters shift line speeds and screw profiles without hitches. We’ve worked directly in cleanroom environments where black specks or gel particles can’t be tolerated — using this grade has allowed these customers to reduce auto-scrap rates by up to 30 percent, helping maintain their process certifications with easier cleaning routines and less waste.
Producers of valves, separators, and liners often talk about the weldability of the extruded product. In our experience, joints using this material show clean heat-seal behavior, so weld lines don’t become mechanical weak spots over time, even with thermal cycling. Processors making multiwall tubing or fluid transfer pipes find that the wall thickness remains even, supporting safety and flow requirements. Melt stability shows up in better dimensional control, which means less rejected product at inspection.
We often get questions on what makes the extrusion grade different from injection and general-purpose PVDF products. It comes down to design and performance. Injection grades are engineered for fast filling and short cycle times; their melt index fits rapid molding but often creates surface swirls and splay in extrusion, which reduce clarity and appearance. Large particle size or blocky morphology in those grades can produce gels and cause film breaks when the output needs to be uniform across thousands of square meters.
By contrast, our extrusion grade targets a finer particle morphology: the powders compact well in feeder hoppers without bridging, and pellets feed evenly without telegraphing through thin films or causing die lines. The focus on thermal stability means fewer issues with browning, even through extended dwell times in the barrel, which matters in night-shift operations or bulk production.
Our PVDF extrusion grade built its reputation from decades on the production floor, where line operators and engineers care about measurable outcomes: throughput, downtime, defect rates, and repeatability. We’ve watched customers transition from imported resins or generic grades, tracking shifts in output scrap rates and resin consumption. In one cable jacketing facility, material changeover to this extrusion grade helped double line speed from 15 to 30 meters per minute without seeing melt fracture, which isn’t just lab data — it’s seen on the take-up drum and in finished cable inspections.
In pipe extrusion, we see fewer blockages and easier color changes. High-output sheet lines can reprocess edge trims cleanly, since the melt viscosity fits post-consumer or in-line recycling. Downtime for die cleaning has dropped by several hours per week in customers’ plants, and surface gloss has improved on end sheets for battery separator films, making the material a staple in both commodity and high-tech lines.
Long-running plants like ours have come to know the headaches minor batch variations can cause: a slight swing in melt flow index can mean off-spec thickness, streaking, or loss of gauge control down the line. That’s why our quality labs connect directly to process control at the reactors, sampling every batch for viscosity, pellet hardness, and color. These aren’t abstract numbers; they translate directly to customer output yield and earned trust. Within our own walls, continuous improvement programs hunt down the root of every nonconforming lot, cutting the incidence year by year, making sure stickiness, fish eyes, or plate-out issues become only stories from the past.
The practical needs of cable, film, and tubing manufacturers create the feedback loop for ongoing product improvement. Our technical service team regularly travels to customer sites, helping on installation and commissioning runs, providing troubleshooting l support, and cranking out suggestions for process tweaks. Real-world feedback over years has reshaped not just our grade’s formulation, but also suggested changes on pellet size, bulk density, and anti-block agent concentration.
Processing lines handling complicated multi-layer films now push for even brighter, cleaner outputs. Battery manufacturers working on critical separator films challenge us to keep ionic impurity levels below five parts per million. Every new segment expands expectations, and each challenge lands on our production engineers’ desks, driving the next round of upgrades beyond just “meeting the standard.”
Health and environmental requirements aren’t just a matter of regulation, they’re part of daily operations. Our plant uses closed-loop systems and advanced dust collection throughout grinding and pelletizing, minimizing fugitive release. Finished resins reach international standards for purity over repeated testing, supporting both RoHS and REACH demands. Where off-gas occurs during extrusion, our grade produces much lower volatiles, which supports cleaner air in crowded shop environments and helps meet environmental monitoring goals.
For customers aiming at green building or water-handling certification, this PVDF extrusion grade may integrate into product lines with lower total environmental impact than glass or high-chlorine alternatives, especially over long service life. The chemical make-up has been designed to avoid SVHC substances, so workers and downstream users avoid legacy hazards like heavy metals or persistent toxins.
Growth in lithium battery manufacturing, architectural coatings, and microfiltration systems keeps driving demand for highly pure, robust PVDF. Extrusion grade forms the backbone of membranes that must endure aggressive cleaning cycles with oxidants. Water disinfection plants have adopted pipes and sheets extruded from this resin, counting on its attack resistance. In solar panel encapsulation and high-reflectance building films, processors need brilliant, stable white and clear options, which our extrusion resin produces batch after batch.
We’ve worked closely with customers scaling up for electric vehicle components, where cable insulation must withstand heat, abrasion, and compressive force all in one. In these lines, the resin’s outgassing remains minimal, and its response under flame exposure holds up year after year, delivering durability in tough end-use environments.
We view each sale as more than a shipment. Our approach keeps us in close contact with operators, engineers, and R&D decision-makers using PVDF extrusion grade as their mainstay. Customer audits drive us to keep improving batch-to-batch consistency, traceability, and safety documentation. The real test comes when processors report back, sharing their stories of improved output, fewer equipment stoppages, lower scrap percentages, and fast recipe changeovers.
Direct feedback from downstream converters — not just sales representatives — shapes every tweak in our process settings. From extrusion line start-up support to ongoing technical collaboration, our resin’s reputation now stands as much on day-to-day reliability as on datasheet specs. We work side-by-side with customers, chasing higher productivity and tighter quality metrics every year.
Running a chemical manufacturing plant brings daily proof that details matter: from raw monomer selection to reactor control, to final granulation and bagging processes. Over years of production, field feedback has pushed our PVDF Extrusion Grade to show clean throughput, robust surface finish, and reliability where processors need it most. Real shop experience continues to direct our improvements and guarantees that every bag leaving our facility offers more than numbers — it delivers performance borne out by the realities of modern extrusion.