Author: Site Editor Publish Time: 2026-01-09 Origin: Site
In industries such as carbon fiber composites, electronics, labels, medical, and optoelectronics, release paper serves as a critical release and protective material. Its performance directly impacts product production efficiency and finished product quality. Faced with a wide variety of release paper products, how can companies accurately judge their quality? This article will analyze four key aspects: raw material selection, performance testing, application performance, and industry standards, to help you systematically understand the key points of release paper selection.
To purchase or wholesale high-performance release paper, please contact Revolve CF, our release paper supplier, at HarveyXu@revolve-cf.com or our official website: https://www.revolve-cf.com.
Release paper consists of two components: a backing paper (substrate) and a release coating. Common paper bases include cellophane, kraft paper, and PET film, while release agents are typically silicone or fluorine compounds. The paper base determines mechanical strength and temperature resistance.
The release agent determines release performance and re-positioning performance.
Selecting a high-quality paper base requires careful attention to the following indicators:
Flatness: Determines whether wrinkles and bubbles occur during lamination and processing.
Thickness Uniformity: Impacts stability in subsequent lamination processes.
Heat Resistance: Whether it meets the requirements of hot pressing processes (such as carbon fiber curing).
The coating must be uniform, adhere firmly, and provide excellent release performance. Testing methods include:
Coating weight control (generally 0.5-1.2 g/m²).
Coating uniformity testing.
Release force testing (see table below).
Evaluating the quality of release paper requires more than just appearance; it requires quantitative analysis through scientific testing indicators. The following are several key test items:
This indicator reflects the release strength of the release paper from the attached material and is the most critical performance indicator. Release force should be set according to the intended use: medium to light for electronic tape, and precisely controlled for carbon fiber prepreg.
The typical unit is g/25mm.
Release liner performance in humid or high-temperature environments is critical to its reliability.
Temperature resistance is typically required between 120°C and 180°C, with some products reaching as high as 250°C. Products with high moisture absorption are prone to deformation, affecting lamination accuracy.
Surface tension affects subsequent gluing and lamination processes. High-quality release liner should have a stable tension control (e.g., 38-42 dynes/cm).
| Performance Indicators | Performance of Premium Release Paper | Performance of Standard Release Paper |
| Release Force Stability | Within ±5% | Fluctuations are significant |
| Coating Uniformity | High, consistent across the entire web | Streaks or bubbles may occur |
| Paper Thickness Deviation | ≤ ±2% | Large deviations may affect processing |
| High Temperature Resistance | ≥180°C | Prone to thermal deformation |
| Surface Flatness | Mirror-like | Wrinkles or indentations may occur |
| Application Areas | Recommended Release Paper Types | Key Quality Requirements |
| Carbon Fiber Composites | Double-Sided Glassine Release Paper | High-Temperature Stability, Thickness Consistency |
| Medical Patches | PET Release Film | Biocompatible, Mild Release Force |
| Label Printing | Kraft Paper Release Paper | High Flatness, Uniform Coating |
| Molded Electronic Components | Double-Si Coated Release Paper | Heat and Pressure Resistance, Antistatic |
Poor Adhesion: Uneven Coating or Insufficient Release Force
Residual Adhesive: Release Agent Migration or Paper Surface Contamination
Warping and Deformation: Insufficient Moisture Resistance or Improper Heat Treatment
Feel: High-quality release paper has a soft, smooth surface, without a dry feel.
Light Illumination: Check for uneven coating streaks under backlight.
Glue Pressure Test: Test adhesion and release performance in a simulated application environment.
ASTM D3330: Peel Strength Test Standard for Adhesive Materials
ISO 9001/14001: Production Process Quality and Environmental Management Certification
RoHS/REACH: Environmental Certification Requirements, Especially in the Electronics and Medical Industries
Manufacturers that meet these standards generally have a higher degree of assurance of product quality.
A reliable release paper supplier should possess the following:
Independent R&D capabilities: Customizable products with varying release forces
Laboratory testing capabilities: Providing comprehensive testing equipment for release forces, coatings, thickness, and other testing
Stable supply capabilities: Excellent batch consistency, stable delivery, and professional service
As a professional release paper supplier with over ten years of industry experience, Revolve CF serves a wide range of industries, including composites, electronics, and medical. Its product line includes glass liner release paper, kraft release paper, PET film, and more.
Official Website: https://www.revolve-cf.com
Email: HarveyXu@revolve-cf.com
Featured Services: Customizable coating type, release force, width, and roll diameter; test reports and sample comparisons provided.
Raw Material Quality: The quality of the paper base and release agent is fundamental.
Test Data: Metrics such as release force, thickness, and temperature resistance must meet standards.
Application Results: Evaluate based on actual process performance.
Industry Standards: Compare to ASTM, RoHS, and other requirements.
Supplier Capabilities: Select partners with R&D, testing, and delivery capabilities.
Accurately assessing release paper quality not only effectively improves production efficiency and reduces material waste, but also ensures stable and consistent final product performance. When selecting a partner, companies should prioritize comprehensive brands like Revolve CF release paper suppliers to help them achieve high-quality products. For more information on release paper products, samples, or wholesale customization, please contact Revolve CF release paper supplier via email at HarveyXu@revolve-cf.com or visit the official website: https://www.revolve-cf.com.
