Author: Site Editor Publish Time: 2025-11-25 Origin: Site
In modern industrial manufacturing and composite material processing, release paper, as a functional auxiliary material, plays an indispensable role. It not only provides isolation, anti-adhesion, and protection in composite materials, tapes, labels, electronics, and other fields, but also exhibits differentiated performance depending on its thickness. This article will provide an in-depth analysis of the relationship between release paper thickness and performance, offering industry users professional reference from multiple perspectives, including production and processing, selection recommendations, application scenarios, and market trends.
To purchase or wholesale various high-performance release papers, please contact Revolve CF Release Paper Supplier at: HarveyXu@revolve-cf.com or visit: https://www.revolve-cf.com.
In practical applications, release paper thickness is typically measured in microns (μm) or grammage (gsm). Common thicknesses range from 25μm to 120μm, with common specifications including 30μm, 50μm, 60μm, 80μm, and 100μm.
Thin release paper (25-40μm): Suitable for processes requiring thinness, such as film release.
Medium-thick release paper (50-80μm): Widely used in medium-strength release applications such as tapes and labels.
Thick release paper (90μm and above): Mainly used in applications requiring high stiffness and abrasion resistance.
Although thickness and weight are different physical parameters, there is a correlation between them. Generally, for the same material, a higher weight corresponds to a greater thickness. However, due to factors such as coating density and calendering method, actual data should be considered for determination.
The thickness of release paper is typically measured using a micrometer or electronic thickness gauge in accordance with international standards such as ISO 534 or ASTM D645. Accurate measurements help assess its physical properties and applicable range.
One of the primary functions of release paper is to control peel force. Thickness affects peel force in the following ways:
Thin release liners, due to their thinner surface coating, are generally suitable for low-peel force applications;
Thick release liners are more suitable for processes requiring medium-to-high peel force, such as industrial tapes and architectural membranes.
It is important to emphasize that peel force is not only related to paper thickness, but also to the coating type (such as silicone oil) and coating weight. Revolve CF release paper suppliers can provide customized peel force parameter solutions based on customer needs.
As thickness increases, release paper properties such as tensile strength, tear resistance, and curl resistance significantly improve. In mechanized operations such as automated labeling, die-cutting, and handling, thicker release paper can prevent tearing caused by tension or die cutting.
Thicker release paper resists bending and reduces flexibility, but improves stiffness and flatness. In processes requiring high-speed die-cutting or complex forming, a trade-off between flexibility and stiffness is necessary.
Electronic materials: For example, flexible printed circuit boards (FPCs) and PET films require ultra-thin release paper to maximize interlayer space utilization.
Label Industry: For small-area label liner applications, this reduces material consumption and improves labeling efficiency.
Pressure-Sensitive Adhesive Processes: Thin release paper is used in low-tack applications to reduce separation resistance.
Double-Sided Tape: Requires a certain thickness to support die-cutting and rewinding;
Coating Protective Film: Requires high-temperature and chemical resistance;
Glue Transfer Carrier: Using medium-thick release liner in automated dispensing ensures stable adhesive release.
Architectural Film and Vehicle Wrap: Require high strength and stiffness for large-area application;
Industrial Pressure-Sensitive Adhesive: Strong adhesive materials require thick release liner to prevent transfer;
Carbon Fiber Prepreg Carrier: In the composites industry, thick release paper is used as a release substrate to improve layup accuracy and demolding efficiency.
Different processing methods (such as die-cutting, lamination, and hot pressing) have specific requirements for the physical properties of release paper. For example, die-cutting requires good cut resistance, while hot pressing requires a certain degree of thermal stability. Thickness should be considered in conjunction with the process when selecting the release liner.
In automated equipment, release liner tension control is crucial. Excessively thick release liner can cause tension fluctuations at high speeds, resulting in instability in winding and laminating processes.
Increased thickness generally means increased material costs, especially in high-volume applications. Furthermore, environmental regulations also regulate the thickness of disposable materials. For example, some markets favor the use of biodegradable materials and lightweight solutions.
With increasing demand for functional materials in downstream industries, the market is seeing a growing trend toward "multiple uses for one release liner," particularly in the electronics, automotive, and medical sectors. Release liners of moderate thickness, combined with antistatic, flame-retardant, and antimicrobial features, are becoming the mainstream.
Traditional "general-purpose" release liners are gradually giving way to "customized products." Users can precisely set thickness and performance based on parameters such as the adhesive system, ambient temperature, peel direction, and roll structure.
Although small, release liners play a vital role in connecting the industrial ecosystem. Their thickness not only determines their performance but also directly impacts processing efficiency, product yield, and customer experience. Therefore, when purchasing release liners, companies must consider the actual application and conduct a comprehensive evaluation based on material properties, process requirements, and cost factors. If you are looking for a high-performance, stable and reliable release paper supplier, or would like to customize a release paper specifically for your product, please contact Revolve CF Release Paper Supplier at HarveyXu@revolve-cf.com or visit the official website for more product information: https://www.revolve-cf.com.
