In the demanding world of advanced composites, precision, consistency, and performance are essential. The right film release liner plays a crucial role in ensuring that prepregs, resins, and adhesive systems perform to their exacting specifications. That’s why leading manufacturers and converters across North America trust Fox River Associates as their go-to source for high-performance release liners for composite applications.
For more than 35 years, Fox River Associates has provided film and paper release liners designed for the most challenging environments, including aerospace, automotive, wind energy, marine, and industrial composite manufacturing. Our deep technical understanding of the prepreg process and our comprehensive product inventory allow us to deliver solutions that improve efficiency, reduce waste, and keep your production lines running smoothly.
Why Choose Fox River Associates for Composite Release Liners?
When it comes to composite manufacturing, not all release liner suppliers are created equal. Fox River Associates distinguishes itself as a true partner, not just a provider, through three key advantages that set us apart from the competition.
Extensive Knowledge and Depth of Product Offering
At Fox River Associates, our composites team has decades of experience working directly with manufacturers and converters in the prepreg and composites markets. We understand that every composite application is unique, and so are the release liner requirements that support it.
Our expertise spans the entire prepreg process, including:
- Resin impregnation – Selecting the right film or paper release liner to ensure smooth release and consistent resin flow.
- Curing and storage environments – Understanding the effects of heat, cold, pressure, and temperature fluctuations on liner performance.
- Final layup and molding stages – Matching silicone coatings and substrate types to prevent fiber disturbance and surface imperfections.
Whether you require PET, PP, PE, or specialty films, Fox River Associates can recommend the ideal release liner construction for your exact process conditions. We offer a broad portfolio of siliconized and non-siliconized film release liners, each engineered for dimensional stability, chemical resistance, and reliable release performance under the most demanding prepreg conditions.
Our deep market knowledge allows us to:
- Optimize liner performance for resin compatibility
- Recommend liners suitable for cryogenic storage and handling
- Support multi-layer and co-cure processes
- Ensure uniform resin distribution and surface finish quality
When you work with Fox River Associates, you’re gaining more than just a product, you’re gaining a partner who understands the science and engineering behind your materials.
Inventory and Availability – Helping Customers Grow
Downtime and delays can derail even the most efficient composite production lines. That’s why Fox River Associates maintains a robust inventory of film release liners specifically for the composite market. We know the materials our customers depend on, and we stock them so you can move quickly.
Our commitment to inventory management means:
- Faster turnaround times than competitors
- Shorter lead times on both standard and custom products
- The ability to support customers’ growth plans by ensuring product availability
We work closely with each customer to forecast demand and align stock levels to their production schedules. This partnership approach helps ensure that critical release liner materials are ready when you are, supporting both small pilot runs and full-scale production.
With Fox River Associates, you don’t have to worry about supply interruptions or long waits for specialty materials. We’re structured to respond quickly, so your business can grow without missing opportunities.
Flexible Service Programs and Exceptional Responsiveness
In today’s fast-moving composites market, responsiveness and flexibility are just as important as product quality. Fox River Associates is built to support small and medium-sized opportunities with low minimum order quantities and a service model designed around your success.
We make it easy to do business with us:
- Low Minimum Order Quantities that accommodate new product trials, R&D programs, or smaller production runs
- Custom slitting, sheeting, and roll configurations to meet specific converter requirements
- Fast quoting and short lead times, even for specialty products
- A customer service team that understands the technical demands of composite processing
Our goal is to remove barriers and make it simple for you to get the materials you need, quickly, efficiently, and with confidence.
At Fox River Associates, we measure our success by your success. That’s why so many leading composite manufacturers and converters choose to partner with us year after year. Call Fox River Associates today at 1-800-647-6579 or use the form on this page. We’re ready to work with you.
The Role of Film Release Liners in the Composite Industry
Film release liners are critical components in the production of prepregs, resin transfer molding (RTM) systems, and other advanced composite manufacturing processes. While they may seem like a small part of the overall system, the right release liner directly impacts productivity, part quality, and cost efficiency.
Key Benefits of Film Release Liners in Composites:
- Dimensional Stability
Film liners such as PET, PP, and PE offer excellent dimensional control — maintaining consistent thickness and performance through temperature and pressure changes during curing and storage. - Smooth Release and Surface Uniformity
Silicone-coated film liners ensure clean, consistent release from tacky resin systems, helping achieve a smooth surface finish and minimizing fiber disruption. - Moisture and Chemical Resistance
Film substrates resist resin absorption and moisture, protecting prepregs during storage and preventing contamination or degradation. - Temperature Performance
High-performance films maintain stability during both high-temperature cure cycles and low-temperature storage, providing versatility for aerospace and high-end industrial applications. - Clean Processing and Reduced Waste
Quality release liners reduce contamination, prevent sticking, and improve handling efficiency — saving time and minimizing material waste. - Customization Options
Liners can be engineered for single or double-sided coatings, differential release, or anti-static properties, depending on process requirements.
Applications of Film Release Liners in Composites
Fox River Associates supplies film release liners for a wide variety of composite applications, including:
- Prepreg manufacturing
- Resin film infusion systems
- Layup and curing processes
- Vacuum bagging operations
- Honeycomb and sandwich panel production
- Tooling and mold surface protection
Whether your operation focuses on aerospace components, automotive panels, sporting equipment, wind turbine blades or one of the many emerging applications for lightweight composite materials, Fox River Associates offers film release liners that deliver consistent, repeatable performance.
Fox River Associates: Your Partner for Composite Release Liners
Choosing the right release liner supplier means choosing a partner who understands your business. At Fox River Associates, we combine technical expertise, responsive service, and reliable supply to give our customers a competitive advantage in the composites marketplace.
We don’t just sell liners, we help our customers optimize their process from start to finish. Our goal is to ensure that every release liner we deliver performs flawlessly in your manufacturing environment, supports your throughput goals, and meets the high standards your customers demand.
Ready to Improve Your Composite Process?
Call Fox River Associates today at 1-800-647-6579 — we’re ready to work with you.
Our composites team is available to discuss your specific requirements, recommend materials, and provide samples for evaluation. Or use the form on this page and our experienced team will promptly contact you to begin the discussion.
When you need film release liners for composites that perform under pressure, trust Fox River Associates. We have the knowledge, inventory, and service that make the difference.
Fox River Associates is now ISO 9001:2015 Certified.