© 2026 Anhui Liwei Chemical Co., Limited,
All Right Reserved
|
HS Code |
951571 |
| Material | Polytetrafluoroethylene |
| Color | Translucent white |
| Thicknessrange | 0.04 mm to 3.0 mm |
| Operatingtemperature | -200°C to +260°C |
| Tensilestrength | 12-30 MPa |
| Elongationatbreak | 150% - 400% |
| Dielectricstrength | 60-100 kV/mm |
| Waterabsorption | <0.01% |
| Surfaceresistivity | >10^18 Ω·cm |
| Chemicalresistance | Excellent (resistant to most chemicals) |
| Coefficientoffriction | 0.04-0.1 |
| Density | 2.1-2.3 g/cm³ |
As an accredited PTFE Film factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The PTFE film is packaged in a sealed, moisture-resistant roll, 100 meters long, clearly labeled with product and safety information. |
| Container Loading (20′ FCL) | 20′ FCL typically loads about 10 tons of PTFE Film, securely packed on pallets or rolls, ensuring safe transportation and easy unloading. |
| Shipping | PTFE Film is shipped in rolls, secured with moisture-proof and dust-resistant packaging, usually inside cardboard cartons or protective plastic wrap. It should be handled carefully to avoid creasing or damage. PTFE Film is considered non-hazardous, but should be stored and transported in a cool, dry place away from direct sunlight. |
| Storage | PTFE film should be stored in a clean, dry, and well-ventilated area, away from direct sunlight and sources of heat. It should be kept in its original packaging to protect it from dust and moisture. Avoid exposure to sharp objects or extreme temperatures, as these can damage the film or affect its performance. Store flat or rolled to prevent deformation. |
| Shelf Life | PTFE film typically has an indefinite shelf life when stored properly in a cool, dry place away from direct sunlight and contaminants. |
Competitive PTFE Film 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.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: sales3@liwei-chem.com
Flexible payment, competitive price, premium service - Inquire now!
PTFE film owes its reliability to a unique set of material properties and manufacturing practices, refined for over 30 years on our shop floor. Every roll starts as premium, pure PTFE resin, free of fillers. Our line covers micro-thin sheets at 0.05 mm up to thicker grades around 1 mm, always slit and calendered on precision equipment. We keep tight control of thickness tolerances so end-users can trust the flatness, density, and clarity before the film ever leaves the inspection table.
Our team has walked every meter of this process, troubleshooting temperature curves and mechanical tolerances through countless product runs. Internally, we hold all surfaces to higher standards than any generic grade or off-brand import. Edge finish, transparency, and surface smoothness don’t just help with appearance—they reduce microleaks under gasketing pressure and keep electrical insulating breakdowns at bay.
PTFE as a material separates itself by resisting chemical attack. We furnish films to facilities running caustic soda, concentrated acids, and aggressive organic solvents—every operator knows PTFE will shrug off anything short of molten alkali metals or elemental fluorine. Our films won’t age under sunlight or ozone, and won’t lose strength, even after years in harsh process lines.
One difference users notice immediately, compared with other plastics, is the smooth, non-stick finish. Oil, resin, sticky adhesives—everything wipes away. This surface property makes PTFE film the favorite release layer in mold shops, wire and cable production, and the lamination lines where resin bleeds trouble most other barriers. Our own trials have run films through repeated thermal cycles up to 260°C, with no significant warping or degradation, even as many competing fluoropolymer films start deforming or embrittling.
We make PTFE films in both skived and extruded versions. Skived film gets its start as a solid billet, carefully compressed and sintered before being sliced into flexible rolls by precision knives. This route produces tighter thickness control and lets us offer widths up to two meters. Extruded PTFE film emerges as a continuous, seamless tape—especially useful in electrical insulation, where uniform dielectric properties matter most. Our most selected models include:
Our plant technicians have dialed in the processing conditions for each of these models, knowing how minor temperature or pressure shifts during sintering will create unwanted pinholes or loss in dielectric strength. Rather than settle for a ‘one-size-fits-all’ line, we work directly with fabricators to specify which grade and thickness will survive their particular chemical, mechanical, or temperature stresses.
Many engineers ask how PTFE compares to standard polyester, polyimide, or FEP films. In electrical and heat resistance, PTFE leads—our films handle up to 260°C without melting or losing their physical properties. Polyimide will compete on temperature, but falls behind in terms of non-stick behavior and broad-spectrum chemical inertness. Polyester holds up well in motor windings or food packaging, but yields to PTFE for hydrolysis resistance and releases adhesives far more easily.
PTFE’s low coefficient of friction, usually under 0.1, makes it the obvious choice for slide bearings, piston ring overlays, and parts that depend on minimizing wear. Films from nylon or polyethylene struggle to endure continuous sliding over steel. Tape applications, like wrapping hydraulic hoses or bundling sensitive electrical joints, call for PTFE because it won’t cold-flow or creep under load, nor will it wick moisture into cable harnesses.
We’ve seen many users switch to PTFE films after repeated troubleshooting with lower grade plastics that embrittled or contaminated their end product. In chemical process lines, for example, a replacement from PVC to PTFE in barrier films often eliminates frequent leaks and reduces downtime, because the PTFE film doesn’t degrade under acids, peroxides, or oxidizers. The same goes for cleanroom lines—our PTFE films maintain ultralow outgassing, important for semiconductor yields where molecular contamination cannot be tolerated.
On the production floor, one film may be used a dozen different ways in as many different industries. Our customers in electronics manufacturing use PTFE film for insulation of capacitor cores, transformer wrapping, and as a barrier to prevent delamination under thermal cycling. Others in aerospace specify extracellular PTFE sheets for wing surface shims and high-durability spacers, selecting from our thin films for their light weight and tailorable profiles.
Among gasket cutters serving the chemical and oil refining sectors, thick pure PTFE film solves recurring issues with joint leaks and chemical process incompatibility. Older rubber or graphite films often developed surface pitting or let sulfur compounds migrate under high-pressure cycles, cutting plant uptime. After switching to a high-density PTFE film from our line, maintenance windows extend and system reliability improves. One hydrofluoric acid refining operator reported zero gasket failures over 18 months, by comparison to quarterly maintenance using elastomer sheets.
Medical device fabricators seek biocompatibility and process sterility. PTFE film lines many oxygen sensors, blood glucose monitoring cartridges, and surgical instrument release layers in our experience. We support customers here by maintaining strict traceability on resin batches, and by certifying all medical-grade film through USP Class VI tests. Unlike cheaper fluoropolymer blends, our pure PTFE will not leach extractables or degrade sterilization value during repeated autoclave cycles.
The packaging world relies on the anti-stick nature of PTFE film to smooth heat-sealer jaws. Instead of changing out scorched or sticky insulation every week, plant staff report multi-month service lives. Our adhesive-backed PTFE film upgrades this further by allowing for fast replacement, and no downtime waiting for permanent glue to cure. In the textile press and composite sectors, users line platens and release molds with our films—PTFE’s ability to shrug off sticky epoxy and PU foams enables higher yield and lower clean-up costs process after process.
Not every PTFE film comes from the same process. High-volume, low-price producers often sacrifice resin quality and reduce cooling cycle times to boost output. On our line, virgin resin means no recycled content that might include metal dust, organics, or degraded polymer chains that introduce pinholes and tear points. We maintain long sintering holds and gradual cooling profiles. By walking the thin line between throughput and quality, we keep defect rates low and avoid call-backs from our technical partners.
Technicians measure every jumbo roll for thickness at multiple spots using laser micrometers. Surface gloss, haze, and color are judged visually and with digital comparators. We reject any rolls with visible inclusions or edge damage. In the adhesive-backed models, film and adhesive are mated in a Class 10,000 and 1,000 cleanroom suite, to keep out particulates and enable electronics-grade performance. In all, the extra steps in manufacture guarantee users won’t run into the electrical tracking, shrinkage, or delaminations that plague shortcut manufacturers.
For users with specialty needs, we manufacture expanded PTFE films by stretching and orienting standard films under precisely calibrated tension. This forms a microporous structure, favored by membrane manufacturers for venting, filtration, and medical barrier uses. Expanding the film shifts its mechanical properties, raising flexibility and breathability, but does lower overall tensile strength compared with dense skived films. Our engineering team works directly with R&D groups seeking films with custom pore sizes, balancing permeability with mechanical reliability.
We know that even with the right film in hand, success often comes down to use conditions and correct installation. From shop-floor lamination to field jointing, our applications techs consult daily with users troubleshooting warping, curling, and gauge setup. For heat-resistant masking in PCB etch lines, we recommend pre-baking rolls to drive off trace volatiles. Slapping a humidity-warped film onto a critical seal line invites trouble and shortens production runs.
In cleanroom production suites, static control frequently surfaces as a pain point. Standard PTFE acts as a strong insulator—without a conductive topcoat, it will generate surface charge if handled aggressively. For operators handling delicate wafers or assembling semiconductor modules, we offer an antistatic film variant. This is achieved by integrating a low concentration of inert conductive fillers without contaminating base polymer purity or mechanical properties.
Gasket cutters ask about die-cutting film—our experience shows sharp, polished blades reduce dust and avoid feathering along the edges. For thick film grades, cooling tools before each run leads to cleaner cuts. We supply cutting guides and arrange in-person training for new customers adapting PTFE for tricky setups, including tandem die or waterjet circle cuts. The push for tight tolerances and zero dust in life sciences or semiconductor packaging benefits from these production details.
We’ve tracked many of our films through years of aggressive service. On one offshore drilling rig, PTFE film shims functioned as bearing protectors within power-generation turbines, exposed to water spray, high vibration, and thermal shocks. Even after two years, plant staff measured zero measurable swelling, breakdown, or deformation. By comparison, polymer films sourced from distributors as “PTFE-type” broke apart in less than three months, due to poor resin selection or improper orientation. We hear similar stories from mine operators using our films for conveyor belt slides, in grain elevators handling abrasive flows.
Our Q&A lines field questions weekly about whether to choose pure PTFE, expanded, FEP, or polyimide for specific projects. We approach these questions by drawing from our filtration, gasket, wire, and thermal processing partners, focusing on how the film will be bonded or assembled and which properties—be it flexibility, chemical resistance, or low friction—are most mission critical. There’s no short answer, but careful matching leads to long-term reliability and fewer costly production stoppages.
Working directly with our plant means customers see shorter lead times and can discuss real adjustments in film cut, surface finish, or compound choice. Distributors and third-party resellers lack the shop-floor insight and can’t flex production for custom diameters or non-standard tolerances. Over the years, we’ve supported users facing shutdowns for new regulatory tests, or dealing with changes in chemical compatibility. When these challenges pop up, our process specialists dial in the manufacturing variables to hit the new spec—no run-around, no import delays.
Consistent supply stretches well beyond the product. For groups qualifying medical or defense-grade equipment, full traceability gives assurance right back to bulk resin arrival and QA logbooks. We issue material certification and batch records so that quality managers and auditors can follow every film to source. Many of our competitors lack the direct production control to guarantee this level of documentary support.
Environmental conditions grow tougher: hotter, more caustic process lines, and stricter cleanliness or static discharge limits in manufacturing. We see relentless demand for better stability and lower emissions in every industry. That means continual investment in resin chemistry, more precise control, and technical support that runs on real feedback, not just published band-gap or friction numbers.
Customers push us to stretch the performance of PTFE film, and we respond by trialing modified compounds, blended resins, and next-gen sintering cycles. We continue to expand our film lines, developing reinforced PTFE composites for high-wear sliding, layered barrier films for permeation resistance, and custom anti-static grades. Each refinement starts from in-plant knowledge and direct customer work, not guesswork or generic technical marketing.
As one of the few firms with complete vertical control from resin feed to finished roll, we hold unique responsibility and pride in the films that leave our dock. Our plant floor innovations, technical talks with field users, and hands-on field service keep us focused on getting PTFE film right the first time, every time, for applications where breakdown is not an option.
