Author: Site Editor Publish Time: 2025-10-20 Origin: Site
In the carbon fiber composites, electronics, label die-cutting, and medical industries, release paper is a key auxiliary material widely used in bonding, anti-adhesion, and lamination processes. Choosing the right release paper is particularly crucial in the demolding process. This article will delve into the differences between single-sided and double-sided silicone-coated release paper, their applications, selection tips, and considerations, helping you make the best decision for practical use.
Single-sided silicone-coated release paper: One side of the paper is evenly coated with a silicone release agent, creating a smooth anti-adhesive surface. The other side remains untouched.
Double-sided silicone-coated release paper: Both sides of the paper are silicone-coated, providing anti-adhesive properties. It is suitable for anti-adhesive applications involving materials that come into contact with both sides.
Single-sided and double-sided silicone-coated release paper differ in flexibility, thickness, and release strength:
| Comparison Items | Single-sided silicone-coated release paper | Double-sided silicone-coated release paper |
| Number of coated surfaces | 1 side | 2 sides |
| Release force control | Easy to control | Requires bidirectional control |
| Applications | Single-sided bonding/demolding | Double-sided bonding/lamination |
| Cost | Relatively low | Relatively high |
| Common substrates | Glassine, CCK, PET | Glassine, PET |
The choice of substrate should be based on the product application, cost budget, and release process.
In carbon fiber prepreg production, release paper is primarily used as a temporary release medium:
Recommended: Single-sided silicone-coated release paper, which effectively reduces material waste and poor bonding.
Advantages: High-temperature stability, clean demolding, and excellent surface uniformity.
Recommended substrates: PET or glassine paper, which offer excellent heat resistance and strength. For single-sided silicone-coated release paper for high-performance carbon fiber, please contact Revolve CF Release Liner (https://www.revolve-cf.com).
In the label, die-cutting, and printing industries, adhesive materials often require double-sided anti-stick treatment:
Recommended: Double-sided silicone-coated release paper to prevent sticking during winding or lamination.
Application Advantages: Smooth surfaces on both sides facilitate continuous machine operation and are suitable for high-speed lamination.
The production of double-sided tape or high-adhesion protective film requires preventing contamination or loss during transfer.
Recommended: Double-sided silicone-coated paper to prevent sticking on both sides.
Especially suitable for: Multi-layer structures requiring multiple laminations and segmented lamination.
Siliconization processes include:
Thermosetting (thermal silicone);
UV-curing silicone;
Solvent-based and solvent-free silicone oils. High-quality release paper requires a uniform, impurity-free silicone layer with low transfer rate, ensuring a clean, seamless release every time.
Common grades include:
Low Release: Suitable for low-viscosity adhesives;
Medium Release: Suitable for strong adhesives or thick films.
Revolve CF release paper suppliers offer customized release force to meet diverse industrial needs.
Different processes require different temperature resistance requirements:
Glassine paper: Approximately 120°C;
PET release film: Up to 150-180°C;
Polyester film double-sided release liners: Suitable for high-temperature processes such as composite materials and 3C electronics.
Many buyers focus solely on unit price, ignoring overall yield and operational efficiency:
Low-quality release paper can lead to demolding failures and secondary processing, which in turn increases hidden costs;
Choosing brands with proven processes (such as Revolve CF) is more reliable.
Release paper backings are typically glassine or kraft paper, while film backings are PET or PE. The choice should be based on the equipment's tension and temperature resistance requirements; do not mix them.
Surface treatment of release paper includes supercalendering and pre-coating dust removal. Missing these steps can lead to uneven silicone coating, bubbling, and incomplete release.
Even if the parameters match, it is still recommended to:
First test the peel strength on a small batch of samples;
Check for silicone oil migration, wrinkling, or warping;
Retain the test report for reference for bulk purchases.
Whether single-sided or double-sided silicone-coated release paper, each has its optimal application scenario. When choosing, consider material properties, process requirements, and cost control to avoid short-sighted decisions that compromise product yield and customer experience.
Email: HarveyXu@revolve-cf.com
Official Website: https://www.revolve-cf.com
