Products
Products
Products
| HS Code | 883769 |
| Material | Polyethylene Terephthalate (PET) |
| Color | Clear |
| Thickness Range | 12-200 microns |
| Width Range | up to 2100 mm |
| Surface Finish | Glossy or matte |
| Release Force | Low, medium, or high (customizable) |
| Thermal Stability | Up to 150°C |
| Transparency | High |
| Moisture Resistance | Excellent |
| Chemical Resistance | Good |
| Tensile Strength | High |
| Applications | Labels, electronics, medical, tapes |
| Coating Type | Silicone or non-silicone release layer |
| Substrate | Film-based |
| Rewind Type | Roll |
As an accredited Clear PET Release Film factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Clear PET Release Film is packaged in rolls, each roll containing 100 meters, securely wrapped in moisture-proof plastic and sturdy cartons. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for Clear PET Release Film: Typically accommodates 15-18 tons, rolls securely palletized for safe, moisture-protected transport. |
| Shipping | Clear PET Release Film is securely packaged in rolls, wrapped with protective film, and packed in sturdy cartons or wooden cases to prevent damage during transit. Standard shipping includes labels for safe handling, with prompt dispatch via reputable carriers to ensure timely and efficient delivery to your location. |
| Storage | Clear PET Release Film should be stored indoors in a clean, dry environment, away from direct sunlight, moisture, and sources of heat. Maintain temperatures between 15°C and 30°C, with relative humidity below 70%. Keep rolls in their original packaging until use to prevent contamination and damage. Avoid stacking heavy items on top to prevent deformation or creasing. |
| Shelf Life | Clear PET Release Film typically has a shelf life of 12 months when stored in a cool, dry place, away from sunlight. |
As a direct manufacturer of clear PET release film, we support critical industries with advanced material solutions tailored to high-performance applications. Our films integrate into downstream manufacturing lines, enhancing process reliability, product quality, and compliance with stringent regulatory frameworks across key industrial sectors. Below, we detail primary B2B applications by segment, specifying compliance criteria, concentration guidelines, integration practices, and typical end products.
Leading touch screen and flexible display producers rely on clear PET release film for silicone adhesive casting and lamination steps. This film provides precise release force, outstanding dimensional stability, and optical clarity required during the manufacture of optical membranes and conductive layers. Downstream users specify the film’s physical and chemical consistency for reliable demolding and defect-free surface transfer. Accurate slit width and release force control enable use in advanced display lines and cleanroom environments where static and particle contamination pose risks to yield. High-temperature PET formulation ensures compatibility with isothermal curing and wet-coating processes.
Industry compliance standards
Typical usage ratio
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Industrial tape producers incorporate clear PET release film as the essential liner for double-sided, foam, and specialty PSA tapes used in automotive, electronics, and appliance sectors. Film surface chemistry and finish precisely control peel performance of silicone or acrylic adhesives, ensuring consistent unwind and low waste during tape slitting and die-cutting. Both permanent and removable adhesives benefit from heat-stable, inert PET liners, which facilitate clean edge definition, accurate die profiles, and secure rolls for bulk supply. Customers validate each batch for anti-static properties and release uniformity.
Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
Label manufacturers select clear PET release film as the backing medium for pressure-sensitive and thermal transfer labels used in pharmaceuticals, logistics, and consumer packaging sectors. Stable mechanical properties enable integration with precise die-cutting systems, ensuring consistent label registration and flawless automatic application at high speeds. PET’s low moisture absorption prevents label curl and supports storage in variable climates. The film’s optical clarity and surface finish allow for transparent, “no-label look” labels favored for luxury packaging. Stringent QC on haze, gloss, and release parameters guarantees compatibility with advanced digital and flexographic printing.
Industry compliance standards
Typical usage ratio
Downstream process integration
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Composite manufacturers for automotive, wind energy, and sporting goods apply clear PET release film as a separating layer for epoxy prepregs, carbon fiber sheets, and specialty laminate layups. PET’s temperature and chemical resistance enable use in high-performance hot-press or autoclave curing, preventing resin adhesion and fiber distortion. Controlled surface roughness or micro-embossing options facilitate targeted resin flow and venting. QC teams continually assess the film's compatibility with various resin chemistries, ensuring no transfer, delamination, or pinhole defects in structural end products. Batch certifications support aerospace and critical-use supply chains.
Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
Solar panel module manufacturers integrate clear PET release film as a lamination release layer during module encapsulation. The film’s high clarity and thermal resistance are crucial for multi-layer glass-EVA-cell-EVA-backsheet lamination, especially under vacuum conditions and elevated temperatures (>150°C). PET release film supports contamination-free EVA crosslinking, reducing bubble and gel occurrence. Controlled static and haze properties ensure no introduction of surface artifacts or electrical faults. QC requirements in this sector demand batch traceability and repeatable release profiles for gigawatt-scale lines.
Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
Competitive Clear 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
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In the manufacturing world, people today count on materials that work steadily, even under pressure. Over years spent refining our own PET release film, we have watched how its consistent clarity and release properties make a difference in factories as big as automotive plants and as focused as specialty electronics. There is no fast route to consistency—the control you earn over the surface of PET comes from tuning every stage from PET resin sourcing to in-line tension control and winding in our film machines. You keep hearing about performance in terms of gloss and peel strength, but for our crew, these details mean hours spent making sure sheet thickness holds close to target down the length of kilometers produced each shift.
We manufacture clear PET release film under the model CP-86, usually in thicknesses from 25 to 100 microns, with roll widths anywhere from 1,020 to 2,250 millimeters. The PET resin we use has been filtered several times for impurity removal. After extrusion and biaxial stretching, each film winding receives a controlled silicone coating. These steps mean the film arrives not just transparent, but with a surface you can rely on for repeatable release force, film after film. The only way to guarantee that is to build the lineup ourselves, not depend on coatings applied somewhere else.
The real test of a clear PET release film happens far before it leaves our facility. Our resin silos hold batches long enough for laboratory testing, not just to check for clarity, but to measure small flaws invisible to the naked eye. Once the resin passes these checks, direct melting and extrusion at exact temperatures matters since overheating brings yellowing, and any drop introduces gels or black specks. We monitor dew points before drying because PET takes on water fast, leading to hydrolyzed chains and brittle rolls. Keeping melt temperatures steady makes sure clarity doesn’t come at the expense of toughness.
Our stretching lines operate at controlled speeds with synchronized direction changes. This step builds strength into PET’s backbone, and we’ve learned that unless temperature and strain rates keep close, films curl, ovalize, and throw off coating uniformity. Our operators walk the lines each hour to confirm everything tracks well. Afterward, the silicone release solution gets applied on computer-calibrated coaters that deposit less than a micron in thickness, checked by laser measurement. That coating’s chemistry decides almost everything about your release force, especially as humidity shifts inside different shop floors.
PET release film gets used everywhere sticky surfaces need a protective backing: self-adhesive tapes, medical dressings, specialty labels, and even optical films for screens. What you notice as a manufacturer is how quickly a small defect in release uniformity disrupts a customer’s entire converting line. Wrinkles, static marks, or points of uneven peel can jam slitting machines and throw off registration in die cutting. Over the years, we have modified our anti-static systems so that each sheet, even fully transparent, carries the right level of charge control for high-speed unwinding. Production floors running 24 hours a day need release liners that never surprise.
Some users ask about the difference between film-backed and paper-backed release liners. We always explain: PET film brings higher heat resistance and zero organic debris—no lint, no splinters, and no tearing under pressure. This matters if your adhesive process involves ovens, UV curing, or electronic circuit layers. Thinner PET films also stay flat and optically clear, showing exactly what sits underneath—a requirement for screens and laminates demanding flawless appearance. In contract, glassine and Kraft liners, often used for shipping labels, absorb more moisture and can break down under higher tension or heat.
Customers who buy PET release film expect a certain “feel” to the release force—neither too light that a liner falls away during handling, nor so strong that it lifts adhesive or warps the product during peel. We address this by controlling the cross-link density of the silicone chemistry and post-curing conditions. Each batch gets tested across a matrix of temperatures and humidity, because the ideal release for a pressure-sensitive film at 23°C may pull much harder in a packaging line near 38°C.
Printing on PET release film brings its own challenges. Our clients in specialty labels and medical diagnostics have discovered that offset, gravure, and flexo ink adhesion vary strongly depending on the surface energy of the PET as well as the chemistry of the release coating. That is why we run both corona treatment and post-coating surface modification, measuring dyne level at multiple points per roll. A roll that left the factory without these precautions would reject print or cause downstream ink smearing—a source of scrap that few lines can afford.
Each production run adds insight on reducing edge waste, core deformation, or telescoping during storage and transport. At thicknesses under 40 microns, we see a higher incidence of “blocking,” where wound film layers bond under pressure—making unwinding hard and causing adhesive transfer. Our line operators devised improvements by adjusting winding tension, core material, and interleaving methods. Conventional PET films often lack the slip control and flattening treatments that release films demand, and using general-purpose PET for release liner applications nearly always ends in higher material loss.
We see factories now requiring more closed-loop feedback on film properties. Inline sensors now track thickness variations and coating density to flag issues earlier. Where once a single operator could monitor several lines, maintaining this level of control now takes both skilled staff and frequent automated QC. This has changed the way we invest: less in speculative upgrades, and more in robust, repeatable measuring equipment directly along each processing stage.
Customers ask how clear PET release film addresses the move toward circularity and reduced waste. From our end, most PET liner scrap can be mechanically recycled since the raw material remains compatible with general PET recycling streams. We sort trimmed edge and offcuts by grade and supply these back into re-extrusion streams. The release coating, especially if made with low-migration silicones, does not disrupt most recycling targets. Still, contamination from adhesives used downstream remains a sticking point—most label and adhesive residue resists washing and prevents PET flakes from meeting bottle-grade specs.
We work hard to minimize post-consumer liner waste by offering take-back programs for clean offcuts and roll stock. Piloting closed-system liner collection with some of our bigger clients has shown that PET’s inherent toughness helps multiple re-extrusions, so long as foreign material stays out. Tape makers who now ship finished rolls without liners, using inline release-coated carriers, help reduce overall waste—though not every adhesive product adapts easily to these approaches.
Stringent market regulations for food contact, electronics, automotives, and medical disposables now shape much of our day-to-day process control. We test our CP-86 clear PET release film to meet specifications for extractables, leachables, and volatile organic compound emissions. Material safety and compliance teams regularly audit batch records, ensuring traceability to raw input and documenting line cleanliness before each run. We do not move forward on production without knowing each batch meets stability, migration, and performance criteria set by updated standards.
Some customers want custom patterns in the release level—either a differential across the web, or patterned coating to aid in processing. Our team offers both full-surface and zone or stripe-coated release films. This is achieved by precision masking or digital coating techniques that keep tight lines and repeat geometry across the length of each roll. Asking for these requires detailed dialogue between us and you, since any error appears immediately during die cutting or roll-to-roll conversion.
General PET films may look similar in clarity or gloss rating, but without engineered release surfaces, they rapidly pick up static and block under the pressure of industrial shipping and storage. The permanent anti-static characteristics baked into our clear PET release film help keep converting lines at full speed, even in dry climates or heated environments. Commodity films often lack chemical holdout, so pre-adhesive coatings or aggressive solvent-based adhesives can pass through and mar downstream layers.
PET release film also handles elevated heat processing better compared to most polyolefin or PVC-based liners. Biaxially oriented PET tolerates process temperatures reaching up to 220°C—this means survival under flash curing, high-energy laser die cutting, and lamination steps that warp softer liners within minutes. This makes clear PET release film not just a carrier, but an enabler for jobs where the material can actually define the production window.
Our end users share feedback about the frustration resulting from liner breakdown mid-shift or failed release in the final product. After decades in the business, our view stays the same: reliability in PET release film begins in raw materials selection and extends to tightening controls at every manufacturing stage. Training our production operators to recognize small errors—even the faintest die streak or micro wrinkle—matters more than any single machine upgrade. What we sell is experience built into every meter of film shipped.
Regular engagement with customers means continual upgrades. If an electronics client uncovers a problem during automated pick-and-place, or a label converter identifies unique humidity-driven curl in shipping, we bring the issue back to trial new resin-thermal balance, modify curing, or alter winding pressure. These details yield a product that defends your uptime, not just meets an order specification.
Beyond resin quality and surface chemistry, the secret behind truly reliable PET release film lies in what happens after slitting and shipment. We invest in cleanroom finishing to limit particle contamination, especially for films destined for medical or optical applications. Our packaging keeps moisture and dust out; labels run with barcode traceability back to every production machine, batch, and QC record. Each roll is sampled for release force testing, visual clarity, and roll-trim integrity before shipment.
As more applications shift to thinner and wider web formats, precision in web guiding, roll cutting, and palletization becomes more critical. Clients who shift to wider widths for improved yield rapidly notice if even slight roll telescoping or edge deformation creeps in. We avoid lapses through regular line calibration, and by ensuring core strength matches each requested width and film tension. These steps extend shelf life and keep roll performance steady across seasons and shipping distances.
Demand for higher-performing release liners continues to grow in the face of expanding electronics, medical, and renewable materials markets. At the manufacturing level, our strongest partnerships develop with clients who share feedback supported by solid production line data. This lets us address issues fast—revise resin compositions, tune coating uniformity, or introduce new functional surface layers that aid high-speed automation. We treat every shipment as a long-term relationship: replacing generic film with a product tested and tuned for the exact conditions faced downstream.
With the move to high-speed, fully automatic converting, only liners that maintain stable peel force, anti-static properties, and clarity at scale will remain in favor. PET release film’s ability to tolerate heat, pressure, and intricate winding paths gives it an edge that pulp-based liners or commodity PET can’t match, especially as more products move toward demanding regulatory and aesthetic standards.
We know that compliance profiles, environmental certifications, and efficiency metrics are now a daily part of running industrial materials businesses. Our clear PET release film already meets established EPA and REACH standards for heavy metals and additives. We work continuously with suppliers to qualify resins free from non-authorized additives or plasticizers. Sustainability doesn’t just live in recycling claims but in reducing off-cut, eliminating field failure, and helping our customers run leaner.
The challenge remains in closing the recycling loop for liners that pick up complex adhesives. Future-ready lines might use linerless technology, or switch to mono-material construction that makes PET recycling easier. For now, PET release film leads with clarity, durability, and repeatable release—built with experience that runs from resin silo to finished roll. Our job, as manufacturers, is to move steadily with evolving industry standards and customer needs, while keeping one eye on every meter rolling off the line.
