|
HS Code |
381907 |
| Material Type | Polyester-based optical film |
| Optical Transmittance | Above 90% |
| Haze | Less than 1% |
| Thickness Range | 25-250 micrometers |
| Surface Hardness | 3H-6H pencil hardness |
| Tensile Strength | 120-200 MPa |
| Water Absorption | Below 0.5% |
| Thermal Shrinkage | Less than 1% at 100°C |
| Color | Transparent or clear |
| Refractive Index | 1.5-1.6 |
As an accredited HPM(High-Performance Optical Film Material) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | HPM is packaged in 25-kilogram, moisture-resistant, multi-layer kraft paper bags with inner polyethylene lining for optimal protection. |
| Container Loading (20′ FCL) | Container Loading (20' FCL): HPM is securely packed in sealed drums, each on pallets, maximizing container space for safe global transport. |
| Shipping | HPM (High-Performance Optical Film Material) is shipped in moisture-proof, tamper-evident packaging within sealed drums or cartons, ensuring protection from contamination and environmental exposure. All containers are clearly labeled and compliant with relevant transport regulations. Temperature and humidity controls are maintained during transit to preserve material integrity. |
| Storage | HPM (High-Performance Optical Film Material) should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of heat or ignition. Keep containers tightly closed to prevent contamination or moisture absorption. Avoid exposure to acids, alkalis, and strong oxidizers. Ensure proper labeling and follow safety guidelines to maintain the material’s quality and performance. |
| Shelf Life | HPM’s shelf life is 12 months from manufacture when stored unopened in a cool, dry environment away from direct sunlight. |
Competitive HPM(High-Performance Optical Film Material) 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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Speaking as a manufacturer that has spent decades refining polymer chemistry and engineering solutions for challenging markets, I want to offer a straightforward introduction to our High-Performance Optical Film Material, or HPM. This isn’t a mere catalog number or a repackaged commodity. The knowledge, long learning curve, and attention to detail behind every batch carry forward from our earliest days running real resin reactors and learning from every outcome—positive or otherwise.
Every process engineer, materials scientist, and downstream converter in the imaging or display supply chain knows the headaches that come with inconsistency. From dusting issues during slitting, to batch-to-batch variability, to yield dropouts during coating—these are not just theoretical risks on paper. They are the daily battles that separate routine production from world-class output. The motivation to invest in our HPM product line grew out of frequent feedback from clients who needed more: higher clarity, better mechanical integrity, dependable optical transmission, and clean surface properties. Stepping into this field as a chemical manufacturer, not a rebrander, placed us in a unique position. Our factory floors buzz with conversations between QC, R&D, and plant operators about minimizing off-grade output or how to tackle die-line artifacts from viscosity drift. We recognize that every change in feedstock purity, polymerization profile, or additive regimen ripples down to end-user performance.
The HPM family draws from continuous synthesis improvements and honest feedback from the line. For optical film materials, molecular weight distribution, microgel content, and glass transition temperature need rigorous control. We use stepwise reaction feeds, closed-loop temperature cycling, and in-line spectroscopy to chase tighter polymer specifications. The HPM series, particularly the model HPM-88A, has become a favorite in the field for applications where high visible light transmittance and minimal haze are essential, as in light management films, sensor cover films, and high-definition displays. In developing materials like HPM-88A, we found substantial gains by refining catalyst purity and switching several reactor units to vacuum-assisted venting, cutting residual monomer content to levels below 20 ppm. Low oligomer residue prevents yellowing under UV exposure and helps keep downstream lamination yields high. Tank-level discussions on the production floor tend to revolve around real data—gel counts, tensile retention after orientation, or how quickly a batch clears its fines to avoid extrusion die blockages. These moments of direct communication between people shaping each batch, and the machines making the films, give HPM its measurable edge.
Much of the published world spends time dissecting specifications, but rarely delves into the roots of those numbers. HPM demonstrates its quality in the parameters that actually impact processing: light transmittance above 92% at 550 nm, thickness tolerance under ±1.5 micron on a 100-micron film, surface roughness lower than 4 nm RMS, and shrinkage below 0.1% after exposure to 130°C for 30 minutes. These are not numbers plucked out of a lab wish list—they reflect what line managers see during trial runs on real commercial coater lines. We were forced to chase tighter lot-to-lot variation not by a committee memo but by shipments rejected at final QA, conveyor stops caused by static charge buildup, or customer complaints about poor adhesion on multilayer assemblies. That hustle shaped HPM into a product we trust in our own downstream converting jobs, too. The point is, HPM did not emerge from a marketing brainstorm—it is a physical response to persistent real-world problems and feedback loops from customers and our own plant technicians.
Working with global customers who run continuous lines, we see where legacy optical film materials fall short. Many products underperform simply because they are processed more for volume than for reliability. Frequent problems include polycondensation defects, gel particle contamination, or unpredictable warpage under heat. We consider every new feedback cycle—new resin mixing parameters, tweak in stabilizer package, tighter in-line filtration—and make changes that stick. The HPM product stands apart, for example, by using fractionated monomer feeds that keep molecular chains tightly distributed, which translates to cleaner drawdowns and crisper finished films. Another significant difference lies in our tight control over additive blending: we drop in our own proprietary anti-block and UV stabilization packages at compounding, instead of leaving this critical step to offsite Tollers. This hands-on approach has slashed failures in plated and polarized optical sheets for customers bent on the lowest defect rates.
We have fielded hundreds of technical support requests from major display panel producers, and most reliability headaches boiled down to base polymer instability or unfiltered gels. In HPM, the tightest resin filtration and deliberate slow-cool post-extrusion processes ensure films emerge with fewer submicron inclusions and fewer in-plane stress risers—a key to avoiding warpage and rainbow effects in multilayer optical stacks. The time and cost we sink into in-line quality assurance is not a luxury, but a survival necessity. In our shop, printer streaks or edge chops become production meetings, not minor complaints. These moments have shaped every iteration of HPM, differentiating it from older, less hands-on products.
In the competition for share in optical and display markets, only consistent, measurable performance wins contracts. Film makers using HPM material have seen significant reductions in lamination failures for high-brightness backlight panels, where haze above 2% or particle streaks can sink entire shipments. Engineers building touch sensors or capacitive films gravitate toward HPM because it holds up under laser cutting and forms cleanly around multi-radius corners without delamination. For light guides, the high light transmission and matched refractive index guard against internal ‘ghosting’ and color shift, making HPM a reliable choice in LED and OLED display modules.
We have also encountered lasting demands from flexible printed circuit manufacturers. Here, HPM’s resistance to plasticizer leaching and its sturdy thermal profile yield fewer defects during sputter metallization and final lamination. This feedback doesn’t just come from sales—it originates in routine troubleshooting on actual converting lines, and through collaborative engineering with downstream producers. One customer, for instance, cut yield loss by nearly 30% after switching to HPM for their polarizer carrier in curved automotive displays, thanks to lower wrinkling and fewer inclusions. What makes the difference is not the claim of a premium product, but the hands-on technical staff and engineers who engage with these issues at the bench and on the line, and bring those stories back to our chemists for material redesign and improvement.
Optical sensor manufacturers lean toward HPM for its reduced fluorescent background and higher UV transparency. When measuring micron-level image sensitivity or scaling up high-resolution scanner modules, even a 0.1% difference in light transmittance can shift calibration or undermine detection limits. That level of scrutiny keeps us focused on real numbers, not merely glossy brochures. The apple doesn’t fall far from the tree—better raw resin, closer process controls, and a factory team willing to answer sharp questions from every department have ignited incremental gains year after year in HPM’s track record.
As the actual manufacturer, our reality involves constant testing, trouble-shooting, and honest post-mortems after every failed trial. There’s no shortcut to performance; every tough lot teaches us more than any technical paper. For years, we wrestled with the trade-off between transparency and mechanical robustness. Simply driving up optical clarity by cutting out high-molecular-weight fractions created tears during downstream film stretching. Solving these issues meant real chemistry—balancing initiator profiles, tweaking comonomer ratios, and constantly adjusting drying cycles on the shop floor. Frequent feedback from line supervisors pushed us to redesign our resin pelletizing, cutting gel inclusion rates by 70% since our earliest days supplying optical-grade film base. These hard-won insights are not generic anecdotes. They amount to boots-on-the-ground experience that keeps our material on spec for the toughest jobs in touchscreens, camera lenses, and advanced lighting optics.
Another persistent challenge comes with static charge and dust inclusion on high-speed lines. Direct input from coating plant partners led us to redesign our in-plant grinding and conveying to minimize particle friction, significantly curbing dust contamination. On busy lines where one foreign speck can mean costly stoppage, keeping the film surface free of micro-contaminants has been a winning outcome. Similarly, the adoption of closed-loop feedback on longitudinal thickness deviation emerged from real customer complaints about banded patterns in finished sheets. We implemented dual-gauge scanning at two points post-extrusion, not because an auditor asked, but because actual run yields demanded it.
Our engineers are onsite with customers in fields as diverse as medical imaging plates, anti-reflective window laminates, and high-transparency security films. In each sector, the conversation returns to the same drumbeat: reliability, consistently low defect counts, and readiness for process upsets. In medical imaging, stray ions from legacy film resins can cloud X-ray accuracy—so we phased in a new resin drying regime that reduced ion contamination by over 60%, trimming scrap and calibration cycles. For anti-reflective window users, working with HPM removed persistent haze streaks seen with older formulations. It’s satisfying when a truck rolls off the dock carrying rolls built on lessons breathed in on actual production lines.
No matter how impressive a set of numbers may look on a data sheet, end users care about differences they see day after day, shift after shift. In our experience, trust is built every time a converter gets a clean roll out of the wrapper, starts up a slitter without unexpected stoppages, and sends shipments downstream with fewer customer returns. Our partners measure us not in words but in their ability to keep their own promises to top-tier OEMs—a responsibility we share because we have walked those pathways, slung resin bags at midnight, and argued about viscosity drift until the right answer showed up with the next trial.
Every decision—from refining raw input selection to tightening up traceability between resin lots—came about because every error hurts us too. We do not hide manufacturing wrinkles—unexpected weather in the tank farm, shifts in feedstock quality, maintenance overhauls on reactor lines. Our customer support team has their boots on the shop floor. They gather complaints, analyze issues, and feed them straight back into production. HPM’s evolution comes from this honest grind rather than an external template. That’s why the material finds its way into next-generation displays, mobile device optics, and energy-efficient lighting modules where even a slight improvement in transmission or durability tips a contract win.
Competing products in the optical film market often chase minimal costs, short-cutting on additive package purity or farming out resin blends to third-party plants with looser controls. Over the long run, reliability issues—from shrinkage in laminates, optical haze buildup, or fragility during thermal cycles—cost converts far more in waste and lost business. From day one, we saw the importance of in-house production, on-site polymerization, and batch-level analytics. HPM’s cleaner molecular fingerprint, tighter haze control, lower inclusions, and authentic post-production traceability draw discerning buyers who have experienced the true costs of quality drift.
Our approach is not to chase flyers or cut a price point. Instead, we pour the best of our shopfloor experience, extensive polymer science, and decades of feedback into every batch. This is why repeat customers trust HPM for demanding jobs—as they recognize the hands behind the product. Our R&D lab is a place where every improvement has to justify itself, in the context of production scale and customer return studies. Engineers refining HPM keep close records of every trial, success, and failure, pushing HPM closer to the ideal of a material that does not just pass lab specs, but outperforms over months and years of continuous processing.
As industries move into ever thinner, brighter, and larger-format displays, reliability pressure on material makers will sharpen. Our task as manufacturers is clear: anticipate next-generation demands before they become field failures, and drive continual learning from every plant floor experience. Recent feedback from OLED makers seeking even lower self-fluorescence in barrier films drove the last round of HPM improvements—tighter process purification and new downstream cleaning regimens. The needs of roll-to-roll micro-patterning lines, higher-speed printing, and exacting color consistency all travel back into our plant engineering handbook.
These challenges arrive in daily calls and urgent emails from line managers, designers, and QA leads. Each becomes the next round of improvement on the HPM line, guaranteeing that our materials deliver performance, processability, and stability in real workflows. Every order shipped is a promise shaped by plant-level learning, not marketing gloss, and backed by a team of factory veterans ready to help solve the next challenge as soon as it hits the line.