Fox River Associates Composite Release Liners | Film | Siliconized

Composite Release Liners

Release Liners for the Advanced Composites Industry

Fox River Associates offers a full line of release liners for the advanced composite industry. Because of the extreme conditions release liners are exposed to during processing and storage, release liners for composite applications must be engineered with specific performance characteristics including improved layflat properties and dimensional stability. Fox River Associates understands the unique characteristics of these demanding applications and is ready to serve your release liner needs.

Critical Factor - Dimensional Stability

Sourcing a composite release liner with excellent dimensional stability can make a difference in the quality of the prepreg material when it arrives at your customer. Fox River Associates understands this and supplies paper release liners with this important feature in mind. A paper release liner that has improved layflat properties and does not “expand” or “shrink” with changing environmental conditions will help ensure that your prepreg arrives at the customer in the best condition possible.

For more information on the full line of siliconized paper release liners for the composite market, click here, or contact our experienced technical release liner team at (800) 647-6579 or

Fox River Associates – Experienced in Composite Release Liners!

During the silicone curing process for paper based release liner production, materials are exposed to high temperatures. The paper liner loses moisture to the surrounding environment causing it to have a moisture content that is significantly lower than the natural equilibrium level of the paper.

To manage this, Fox River Associates supplied release liners are produced under tightly controlled process conditions. The silicone coating systems are cured using the thermal method. Sophisticated remoisturization equipment is utilized to replace much of the internal release liner moisture that is lost during the silicone curing process.

Fox River Associates has the ability to supply siliconized paper release liners that have been targeted to a specific moisture range for optimum performance in your composite prepreg operation. The final result is a composite release liner that helps your product appear and perform its best when it arrives at your customer.

Protection from Environment = Improved Performance

Maintaining the proper moisture range in the advanced composite release liner is important to the performance of the product and of the final composite material. If moisture is given up or lost after the liner production process, the layflat and dimensional stability properties of the liner can be negatively affected. These changes can lead to a finished prepreg material that does not lay flat or can result in gaps appearing in the prepreg after production.

Fox River Associates recommends keeping paper release liners protected in the original, moisture protective packaging until ready to use. This can help minimize the amount of moisture change in the finished composite release liner in your inventory.  If the entire roll is not consumed in a single run, storing the unused siliconized paper release liner in a controlled environment (humidity and temperature) will help preserve the stability of the liner. Rewrapping the unused portion of the roll with a moisture protective film is recommended.

To learn more about our how you can protect your release liners for the advanced composite market, contact Fox River Associates at or call (800) 647-6579.

The Fox River Associates Advantage: Partnering for your Success

At Fox River Associates, the real advantage of working with us is our deep understanding of your processing and end application requirements, matched with the highest quality release liner products, delivered with unparalleled service. We work in partnership with our customers to engineer the best performing release liner for advanced composite applications. We take the time to learn about your exacting specifications, processing conditions and end-use application. It is our role to understand your demanding requirements for release liners and recommend the best product for your application. Contact Fox River Associates today so we can start learning about your needs. Use the form on this page or call us at 1-800-647-6579.

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