Products
Products
Products
| HS Code | 156246 |
| Product Name | Ultra Clear / Low Haze PET Release Film |
| Material | Polyethylene Terephthalate (PET) |
| Transparency | Ultra Clear |
| Haze | Low |
| Thickness Range | 12-150 microns |
| Surface Treatment | Silicone coated |
| Release Force | Light to medium |
| Tensile Strength | High |
| Heat Resistance | 120°C - 150°C |
| Surface Smoothness | Excellent |
| Color | Transparent |
| Width Range | Up to 2100 mm |
| Shrinkage | Low |
| Moisture Resistance | High |
| Application | Labels, tapes, lamination, electronics |
As an accredited Ultra Clear / Low Haze PET Release Film factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The Ultra Clear / Low Haze PET Release Film is packaged in rolls, 500 meters each, sealed in moisture-proof protective wrapping. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for Ultra Clear / Low Haze PET Release Film: 8-10 tons (8000-10000 kg), safely palletized, moisture-protected. |
| Shipping | The Ultra Clear / Low Haze PET Release Film is securely packaged in rolls, protected with plastic wrap and sturdy cartons for safe transit. Shipping options include air, sea, or land freight based on order volume and destination. Standard lead time is 7-15 days, with tracking provided upon dispatch. |
| Storage | Ultra Clear / Low Haze PET Release Film should be stored in a cool, dry, and well-ventilated area away from direct sunlight, moisture, and extreme temperatures. Keep the material in its original packaging to prevent contamination and physical damage. Avoid stacking heavy objects on top, and store horizontally to maintain film integrity and ensure optimal performance during use. |
| Shelf Life | Ultra Clear / Low Haze PET Release Film typically has a shelf life of 12 months when stored in cool, dry, and clean conditions. |
Our production of Ultra Clear / Low Haze PET Release Film supports specialized downstream manufacturing sectors requiring stable clarity, minimal haze, and predictable release characteristics during lamination, coating, composite fabrication, adhesive manufacturing, and labeling. Below, we outline key industrial use cases, specifying compliance frameworks, practical dosage practices, integration into industrial workflows, and end-use products supplied by manufacturers worldwide.
Leading electronics companies use our film as the carrier and release liner for manufacturing scratch-resistant protection films applied to LCD modules, touch screens, and OLED panels. The ultra-low haze characteristic maintains the optical purity required for high-resolution displays, while controlled release properties enable lamination without static marks, bubbles, or pattern distortions under high-speed production environments.
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Major label converters select our low haze PET film as a silicone-coated release liner for self-adhesive labels including pharma bottle tags, logistics barcodes, and consumer packaging. The film ensures accurate die-cutting registration and unwrapping on high-speed lines where paper liners are not feasible. Minimal misting and haze guarantee proper barcode scanning and ink visibility, especially in transparent and security labeling.
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Aerospace and wind energy composite manufacturers employ our PET release film as carrier and separator during resin impregnation of prepreg carbon, aramid, and glass fiber tapes. The high clarity allows inline visual QA of resin distribution, fiber alignment, and air bubble detection. Ultra-low haze release film provides precise demolding during lay-up and curing of unidirectional tapes and woven composite sheets, supporting strict laminate quality specifications.
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The FPC manufacturing sector utilizes our film in photoresist lamination and demolding steps during copper etching and multilayer die-stamping. The low haze ensures accurate optical alignment of intricate patterns under AOI (Automated Optical Inspection). Consistent thickness and release force facilitate wrinkle-free masking, layer stacking, and residue-free separation in continuous reel-to-reel flexible PCB fabrication.
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Industrial and specialty tape converters use our PET film as a release liner in producing double-sided and splicing tapes for electronics, automotive, and construction. High clarity and low haze enable optical inspection of adhesive laydown and early defect detection. Consistent release force stabilizes roll-unwind tension and prevents tape stretching or adhesive transfer, which is critical for precise slit rolls and kiss-cut tape shapes.
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Renewable energy module producers employ our low haze PET film as a separation and carrier layer in encapsulation of solar cells and module backsheet lamination. The film maintains visual transparency during vacuum lamination and enables subsequent peel-off without adhesive residue, supporting rapid inspection of cell alignment and interconnects prior to final sealing. High clarity ensures defect-free optical transmission and uniform cell contact during mass module assembly.
Industry compliance standards
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Competitive Ultra Clear / Low Haze PET Release Film prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615380400285 or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615380400285
Email: sales2@liwei-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Every year, our factories turn thousands of tonnes of PET resin into release films destined for labels, self-adhesive tapes, electronics, and more. One of the most persistent requests from our customers focuses on release liners that offer not just impressive clarity, but also minimal haze. From years spent monitoring winding lines, managing heat profiles in stretch lines, and inspecting polymer clarity under backlights, I understand why. Ultra clear, low haze PET release film isn’t just about good looks—it’s about reliable downstream processing, improved visual inspection, and reduced scrap in high-precision applications.
Competing in the arena of release films means more than promising high transparency. For us, real differentiation begins right at the pellet stage—focusing on raw material purity, process cleanliness, and thermal history. Ultra clear, low haze PET release film isn’t just clearer to the eye, it goes through extra steps of filtration and controlled extrusion. Pellets must carry minimal contamination; even slight residual volatiles can show as cloudy streaks or mottle, especially at thicknesses below 75 microns.
Some colleagues in other plants try to shortcut with hastily dried resins or minimal catalyst wash. We learned the hard way such practices only encourage batch-to-batch haze variations and poor release uniformity. Over years of optimizing vacuum drying cycles, in-line melt filters, and polymer stretch ratios, we have seen clarity improve not only under lab conditions, but in real converting lines demanding 50,000 meters or more without breaks or surface imperfections.
Inspecting PET film on-site exposes every flaw. Customers come by and check for bubbles, fish eyes, or stripe haze—sometimes with nothing more than ambient light and experience. Ultra clear / low haze film offers a direct advantage to these hands-on processes. And it’s not only about release liner performance in laminators; full visibility through the film helps downstream operators spot particles or defects trapped between film and pressure-sensitive adhesives before die cutting, slitting, or thermal lamination.
We often see clients in optical display, mobile protection, or even high-end automotive wrap applications come back for clarity grades. They report lowered rework rates and better finished product appearance. Trying out standard PET films—no matter how glossy—just doesn’t deliver the same inspection ease. High haze films disguise tiny inclusions and surface defects, leading to expensive surprises down the line.
Our ultra clear, low haze PET release film covers a thickness range from as thin as 19 microns up to 100 microns without losing optical definition. Transparency regularly exceeds 90% (measured at 550 nm, using light transmission equipment calibrated each week). Haze rates stay under 2%, a figure achieved not just by adding more antistatic agents or flatteners, but by investing in multi-stage melt filtration and state-of-the-art chill roll casting.
We sell in both slit rolls and master logs. Some customers request a proprietary anti-static surface or custom silicone release coatings—choices always validated with extensive in-plant line trials, not just datasheet promises.
A technician new to PET might think “clear is clear.” Experience says otherwise. Standard PET release film has a basic level of clarity, but typically allows more haze due to less stringent melting, sometimes recycled input, and lower filtration precision. Ultra clear / low haze film emerges from a stricter regime involving improved drying, controlled extrusion speed, and more careful handling throughout roll winding. Instead of micro-gels or specks, the film appears almost water-like in transmission.
It’s tempting for procurement to chase lower pricing from medium-grade films, believing minor haze won’t affect performance. Direct feedback from our clients—especially those in optical or electronic segments—shows the savings quickly disappear in higher defect rates, longer setup times for vision systems, and higher warranty returns. Clarity and low haze deliver value in every meter of production, not just in laboratory lighting but out on real assembly floors.
Walking shop floors at converters and end users gives a better understanding of how and why ultra clear, low haze PET release film stays in demand. In mobile phone protection, technicians rely on high transmission to check that adhesive layers apply cleanly, without dust or fibers. Techs laying optical films for electronics need full visibility for quality inspection. In medical device assembly, operators often peer through the liner to confirm alignment before final sealing—every percent of haze adds frustration and slows the line.
Label converters for transparent pressure-sensitive labels, like wine or cosmetics, insist on clear liners so their automated optical registration systems hit mark after mark without false rejects due to murky film. Print shops producing window decals or industrial equipment overlays echo a similar story. Standard release films fail in these roles, especially in tight tolerance applications or those with rigorous cleanliness standards.
Ultra clear PET release film transforms day-to-day work for converting line managers and finishing staff. During machining, the ability to visually track defects, bubbles, or misalignment saves significant downtime. We often get reports that operators can diagnose issues faster and avoid time-consuming rewinds or reprocessing that come with cloudy liners. Print registration marks pass more reliably, and edge inspection becomes possible without artificial lighting or extra labor.
Scrap reduction presents a practical, measurable benefit. Customers running mass lithographic printing report several percentage points’ less waste when using low haze PET over standard grades. Each roll saves money, but it also cuts back on landfill volumes, a detail that matters in sustainability audits and annual reports.
Control of raw material purity starts before the resin ever enters our drying systems. Purchasing contracts require trace metals, acetaldehyde content, and color to check out on every batch, and anything failing our standards is rejected on arrival. Our team runs in-line moisture testing at numerous points to ensure outgassing or haze doesn’t hide in the final film.
Once on the extruder, we tightly monitor residence time and melt temperature. Unchecked thermal cycles or slow startup speeds quickly dull clarity. The film passes through a proprietary filtration array before being drawn and cooled on mirror-polished chill rolls. All steps happen in a cleanroom environment, not just for marketing but to guarantee a finished film without airborne particles or crystal misalignment.
Inspection happens continuously. Our operators receive real training, not just a clipboard checklist. Each shift, they compare samples to reference standards and escalate any visual deviation. This routine is one reason our large-volume customers return; they count on a process that anticipates flaws, rather than catching them late.
Perfect clarity is a moving target. Occasionally, resin lots arrive with slightly higher catalyst fragments, or humidity spikes in the plant threaten to introduce haze. Years ago, we learned to respond quickly with tighter resin screening and longer vacuum drying cycles. If a chill roll loses uniformity or micro-scratches begin to appear, the optical difference shows immediately and prompts a rapid line check.
We stopped using marginal recycled resin due to clarity instability and focus only on prime, certified grades. It’s tempting to experiment with recycled content, but customers in premium printed labels and specialty laminates notice even small optical shifts. Product reliability wins every time over the marginal cost savings.
Customer visits keep us honest. End users often tour our site with test rolls, watching their product run under actual production lighting. We encourage open sample runs—customers spot issues we might not expect and give direct feedback, driving process tweaks and line investment.
Ultra clear / low haze PET release film carries another edge: cleaner production cuts energy and emissions per tonne. High clarity runs require fewer start-stop cycles, less offgrade scrap, and less waste handling. Our plants have gradually shifted toward closed-loop water cooling, lower thermal loss extrusion, and tighter dust control—which all support a greener process, as well as a better-performing film.
Clear film means fewer reworks. Customers using lower haze release liners can often skip double-inspection stages and dispose of less material. It’s a benefit that supports both bottom line efficiency and corporate environmental targets.
Demand for ultra clear, low haze PET release films continues to grow, but the supply chain for ultra pure resins remains tight. Manufacturers like us must maintain strong supplier relationships and strict inbound inspections. Efforts to increase recycling in the PET market bring challenges, since most recycled streams still cannot match the clarity and haze benchmarks required for our premium customers.
We’ve taken steps to future-proof: securing multi-year resin contracts, running parallel development lines for feedstock trials, and investing in melt filtration upgrades. Industry moves toward thinner, lighter films—both for transportation savings and membrane applications—pushes our engineering teams to further innovate on chill roll and orientation design.
Years of working directly with both materials and customers has taught our team that ultra clear, low haze PET release film pays dividends beyond specs on a datasheet. Experience carries through to every feature: the resin, the stretching, the winding tension, right down to secondary coating lines. Many details — from mastering the in-house silicone coating, to maintaining traceability on every roll — influence how well the film works in your shop, not just under lab light.
We invite partners and clients to supervise trial runs and benchmarking. You see our process, and we see yours. Feedback loops between manufacturing and applied use have led to several process upgrades — and our sense of accountability to those who rely on every meter of film shipped out of our facility.
Choosing release film for specialty converting, optical, electronic, or premium label work means weighing apparent cost against total process reliability. In our own lines and in customer plants, ultra clear, low haze PET release film wins trust not by marketing superlatives, but by visible, real-world results. Lower downtime, fewer cosmetic rejects, easier defect detection, and a smoother run from master roll through final cut define the difference.
Our focus remains tight: keep the clarity high, the haze low, and the QC checks meaningful. Every improvement in resin handling, filtration, orientation, coating, and winding results from factory-floor insight as much as from the requests of our customers. In a world where every defect gets magnified—by optical sensor or human eye—film that consistently delivers on clarity and haze pays for itself many times over.
