In the fast-moving world of composites manufacturing, precision, consistency, and cleanliness matter. Whether you're producing advanced prepreg materials for aerospace applications or resin-infused composites for industrial uses, the appropriate release liner plays a crucial role in your success.
At Fox River Associates, we offer a broad portfolio of film release liners and paper release liners engineered to meet the toughest demands of the composites market. With 35+ years of experience, technical expertise, and responsive customer service, we help our customers maintain efficiency and product quality at every stage of the process.
Our team is ready to work with you on your composite market release liner needs. Contact us today – use the form on this page or message us at info@foxriverassociates.com.
The Role of Release Liners in Composite Materials
Release liners are critical components in the manufacturing of composite materials, acting as a barrier between sticky resins and tools, molds, or other prepreg layers. In high-performance applications like aerospace, automotive, wind energy, and industrial tooling, release liners:
- Prevent contamination and resin bleed
- Enable easy and clean removal post-cure
- Protect material surfaces from defects
- Support dimensional stability during layup and curing
For prepreg applications, where resin-impregnated fabrics are stored and later cured under heat and pressure, the quality and consistency of the release liner directly impact part integrity and production efficiency.
Siliconized vs. Non-Siliconized Release Liners
Choosing the right release liner for your composites application comes down to understanding your process and resin system. Fox River Associates supplies both siliconized and non-siliconized liners tailored for composite manufacturing.
| Liner Type | Key Features | Best For |
| Siliconized Film | Excellent release performance, temperature-resistant, chemically stable | Prepreg, autoclave curing, vacuum bagging |
| Siliconized Paper | Economical, suitable for moderate-temp processes, good release | Hand lay-up, composite tooling |
| Non-Siliconized Film or Paper | Coatable or bondable surfaces post-release; ideal for resin bonding or coating | Secondary processing, post-release applications |
Our inventory includes:
- PET (polyester) liners for durability and heat resistance
- LDPE, HDPE, and PP films for flexibility and chemical resistance
- Paper release liners for applications needing breathability or cost-efficiency
Fox River Associates offers a full line of paper release liners and film release liners for the composites market. Learn more today – call us at 1-800-647-6579. Our experienced team is ready to work with you.
Prepreg Applications: Where Precision Meets Performance
Prepreg materials require release liners that not only separate layers during storage and transport but also maintain integrity under pressure and heat during curing. Fox River Associates’ release liners are engineered to:
- Prevent resin migration or bleed-through
- Ensure uniform thickness across the laminate
- Allow for clean removal post-process
- Maintain resin surface finish and cure profile
Our liners are compatible with:
- Carbon fiber and glass fiber prepregs
- Epoxy, phenolic, and BMI resins
- Autoclave and out-of-autoclave (OOA) processes
We provide both single-use and multi-use liners and can slit to custom widths and roll lengths for easy integration into your production line.
Why Composite Manufacturers Choose Fox River Associates
When composite manufacturers need reliable solutions, they turn to Fox River Associates for more than just release liner products—they rely on our technical insight and speed of service.
✅ What Sets Us Apart:
- 35+ years of experience in release liner applications
- In-depth inventory of film release liners and paper release liners, coated and uncoated
- Custom slitting, packaging, and delivery programs
- Responsive team of release liner specialists who understand your composites process
- Solutions for aerospace, industrial, automotive, marine, energy, and sporting goods markets
We don’t just sell release liners, we help customers optimize their production, reduce waste, and meet exacting performance standards.
Use the form on this page or call us at 1-800-647-6579 . Our team is ready to learn more about your needs and help identify the most appropriate film release liner or paper release liner to ensure the success of your application.
Work With a Partner Who Understands Your Process
Selecting the right release liner can make or break your composite part quality. At Fox River Associates, we bring technical knowledge, product selection, and reliability to support your success—whether you’re prototyping a new prepreg product or scaling aerospace production.
The true advantage of working with Fox River Associates is our deep understanding of processing and end application requirements in the markets we serve, including the composites market, matched with the highest quality release liner products, delivered with unparalleled service.
We work in partnership with our customers to recommend the best performing release liner for the required application and conditions. We take the time to learn about our customers’ exacting specifications, processing conditions and end-use applications.
We are highly qualified to discuss coating and manufacturing environments, adhesives and coatings, release parameters and end-use application conditions. It is our role to understand the demanding requirements for release liners and recommend the right product for each customer’s specific needs.
📞 Call Us Today at 1-800-647-6579 to speak with a knowledgeable composites specialist.
📧 Email: info@foxriverassociates.com
📝 Or simply fill out the form on this page and our team will respond quickly.
Let’s Start a Conversation
Fox River Associates is now ISO 9001:2015 Certified