Author: Site Editor Publish Time: 2026-01-22 Origin: Site
Release paper is an essential auxiliary material in the carbon fiber prepreg production process, playing a particularly crucial role in the coating process. It not only impacts the quality of the finished prepreg but also directly impacts coating efficiency, storage stability, and subsequent processing performance. This article will delve into the role of release paper in prepreg coating, its performance requirements, selection criteria, and future development trends, helping companies more effectively select the appropriate release paper material. To purchase or wholesale release paper, please contact Revolve CF Release Paper Supplier.
In carbon fiber prepreg production, resin is evenly distributed onto the surface of carbon fiber cloth or felt using precision coating equipment. Release paper acts as a "support" for the substrate, supporting it throughout the coating, curing, and cutting processes, ensuring stable material transport.
The surface of release paper is specially treated for excellent release properties, effectively preventing sticking or deformation of the prepreg during stacking and storage, thereby maintaining its geometric integrity and ensuring subsequent molding quality.
High-quality release paper evenly releases the resin, preventing localized buildup and uneven coating during coating, thereby ensuring uniform and consistent mechanical properties of the carbon fiber prepreg.
Selecting release paper that is well-matched with the equipment can increase coating speed and stability, reduce downtime for roll changes and corrections, and improve overall production line efficiency.
The release properties of release paper directly affect the ease of prepreg removal and the presence of adhesive residue. High-grade release paper with a fluorosilicone or silicone coating is generally required to ensure that the resin layer does not break when separated from the paper.
During the prepreg manufacturing process, the release liner must not warp, shrink, or deform under high-temperature conditions, ensuring consistent coating thickness and edge cleanliness.
Appropriate surface tension ensures uniform resin spreading and adhesion on the release liner, avoiding defects such as fisheyes, jump spots, and edge shrinkage, thereby improving the final performance of the carbon fiber composite.
To ensure stability during the coating process, the release liner must exhibit excellent surface smoothness and compressive strength. Especially during high-speed coating and calendering, surface defects such as wrinkles and ripples must be avoided.
Prepreg resin systems contain various additives and reactive components. Release liner must exhibit excellent resistance to penetration and chemical stability to these chemicals to prevent absorption or reaction with the resin.
If you are looking for release liner materials with these properties, please contact Revolve CF release liner suppliers for technical consultation and sample support.
PET release film offers higher strength, heat resistance, and flatness, making it suitable for high-speed, high-precision coating processes, but it is more expensive. Paper-based release paper, on the other hand, offers excellent flexibility, environmental friendliness, and slitting properties, making it suitable for a variety of carbon fiber prepreg processes and offering a more cost-effective solution.
Single-sided release paper is commonly used during single-sided coating of carbon fiber prepreg. However, double-sided release paper is required to prevent material adhesion during multi-layer lamination or storage. Users should decide on the type of release paper based on their specific product processes.
Currently, silicone-based and fluorine-based release agents are the main release agents used in industrial applications. Different release agents offer varying release strength, temperature resistance, and cost. It is recommended to select a release paper coating that matches the specific resin type and release strength requirements.
With the global push for carbon neutrality, degradable paper-based release liners have become a key research and development direction in the industry, particularly in aerospace and high-performance composites, where environmental friendliness has become a new selection criterion.
Revolve CF release liners, a long-term supplier, offers a wide range of release liners, supporting customized coating strength, thickness, and width. For custom requirements, please visit https://www.revolve-cf.com or contact HarveyXu@revolve-cf.com.
Inconsistent surface tension and insufficient flatness of the release paper will directly lead to uneven resin coating, increasing void content and reducing mechanical properties in the final composite.
High-quality release paper must exhibit low residue and zero transfer to prevent resin residue from being left during the removal process, potentially impacting curing and composite molding.
Unqualified release paper may tear or stick during demolding, resulting in the entire prepreg being scrapped. Appropriate release paper can significantly reduce defect rates and improve product consistency.
Paper with excellent release properties and moisture resistance can maintain the prepreg's shape during low-temperature storage, reduce resin migration and moisture absorption, and extend shelf life.
Release liners with features such as anti-static, visual marking, and intelligent identification are becoming a new industry trend. For example, release liners with integrated QR code tracking systems facilitate quality traceability and production line automation upgrades.
As the application of carbon fiber composites expands, the demand for customized release paper parameters such as coating release force, thermal stability, and color is becoming increasingly significant. Traditional, general-purpose products are unable to meet all process requirements.
In the future, release liners will increasingly be integrated with automated coating machines, slitting systems, and intelligent stacking equipment to meet the requirements of Industry 4.0 smart manufacturing.
As a leading release paper supplier, Revolve CF continues to invest in R&D, providing high-performance, customized solutions for high-end sectors such as aerospace, rail transit, wind power, and new energy vehicles. For more information or to request samples, please contact HarveyXu@revolve-cf.com or visit our official website: https://www.revolve-cf.com.
Release paper is a crucial component of the carbon fiber prepreg coating process. Its performance directly determines the quality stability and processing efficiency of the prepreg product. With increasingly stringent process requirements and diverse material applications, the optimal selection of high-quality release liners has become a key concern for composite materials companies. As a professional release paper supplier, Revolve CF will continue to provide customized, high-performance solutions to industry customers, helping them gain a competitive advantage in the global market. For wholesale or purchase of release paper, please contact:
Email: HarveyXu@revolve-cf.com
Official Website: https://www.revolve-cf.com
