What Is Release Paper? What Is Its Primary Function?

Release Paper is a specialty paper coated with anti-adhesive materials (such as silicone). It serves as a protective carrier for adhesive products.
Its core function is to prevent adhesives from sticking prematurely while allowing easy peeling during final application. It protects adhesive surfaces from dust contamination and chemical interference.

What Are the Common Types of Release Paper and Their Applications?

Depending on base material and processing requirements, common types include:
Glassine Release Paper
Dense texture and high smoothness. Ideal for automatic labeling systems and medical carrier substrates. Offers excellent heat resistance.
CCK (Clay Coated Kraft) Release Paper
Kaolin clay-coated surface with superior smoothness and thermal stability. Suitable for precision electronics, labels, TPU processing, hot melt films, carbon fiber manufacturing, and medical carrier substrates.
Kraft Release Paper
High mechanical strength and toughness. Suitable for heavy-duty industrial packaging and kraft paper tape applications.
Coated Release Paper
Fine, smooth surface with excellent printing performance.
Parchment Paper
Oil-resistant, water-resistant, and heat-resistant up to 200°C+. Ideal for high-temperature pressing boards, baking paper, and steamer paper.
PE Coated Release Paper
PE laminated surface offers superior moisture resistance and barrier performance for harsh environments.
Single-Side / Double-Side Release
Customizable silicone coating on one or both sides with different release force levels.

Why Does Release Material Quality Affect Your Production Cost?

Minor differences in release materials can lead to production scrap and increased costs. Six major quality factors include:
• Release Force Stability – Determines peelability, sliding issues, or edge lifting.
• Surface Flatness & Consistency – Affects adhesive coating uniformity, bonding strength, and die-cut precision.
• Paper Curling – Impacts automatic feeding speed and labeling stability.
• Moisture Content – Influences dimensional stability and production yield.
• Heat & Humidity Resistance – Determines performance in baking or humid environments.
• Release Coating Uniformity – Prevents uneven peeling, adhesive residue, or silicone transfer contamination.
💡 Technical Breakthrough:
JOY PAPER’s exclusive Steam Re-Humidification Technology significantly reduces processing errors and die-cut abnormalities caused by paper curl.

What Is the Difference Between Release Paper and Release Film?

Release Paper
Cost-effective, heat-resistant, and tear-resistant. Suitable for general labels and industrial applications.
Release Film (PET)
Extremely smooth surface, high transparency, and no paper dust contamination. Ideal for automated optical inspection systems and ultra-clean applications such as optical-grade components and precision electronics die-cutting.

Why Is Glassine Commonly Used for Labels?

Glassine paper undergoes supercalendering treatment, providing high mechanical strength and translucency.
It is ideal for automatic label sensor detection and high-speed die-cutting waste removal. Its dense fiber structure minimizes silicone absorption, ensuring consistent coating data and strong heat resistance during processing.

What Is Release Force? Is Lower Always Better?

Release Force refers to the force required to separate adhesive material from the liner.
Lower is not always better — it must match the application:
• Too high → Poor processing efficiency, liner tearing risk.
• Too low → Premature release, edge lifting, label skipping.
JOY PAPER follows FINAT international standards and verifies results using tesa 7475 + Nitto 31 test tapes.
Custom release force range: 3g – 2000g, covering ultra-light to ultra-heavy release requirements.

What Customization Options Are Available?

We provide flexible industrial-grade customization:
• Paper Type & Structure: Glassine, CCK, Parchment, PE-coated paper, single or double coating.
• Precision Specifications: Basis weight, thickness, silicone type, graded release force.
• Finished Converting: Roll format, precision slitting dimensions, backside logo printing or batch numbering for traceability.

Can Release Paper Be Used for Food Packaging? What Is the Difference Between Baking Paper and Greaseproof Paper?

Yes — but it must use solvent-free silicone compliant with U.S. FDA or SGS food-grade certification.
Baking Paper
High-temperature parchment paper with excellent non-stick performance, preventing baked goods from sticking to trays.
Steamer Paper
Water-resistant and breathable. Suitable for steamed Chinese dim sum applications without tearing or sticking.
Greaseproof Paper
Superior oil resistance with grease rating up to Kit 5, effectively preventing oil penetration into packaging.

How to Select Release Paper for High-Temperature Processing (Hot Melt, TPU, Carbon Fiber)?

Selecting the proper substrate prevents process instability:
Glassine & CCK
Excellent thermal stability. Suitable for electronics, labels, TPU processing, hot melt films, and carbon fiber manufacturing.
Parchment Paper
Extremely strong physical structure. Heat resistance up to 200°C+. Ideal for hot pressing boards and large baking equipment.
💡 Technical Reminder:
Combining with JOY PAPER’s Steam Re-Humidification Technology prevents severe curling caused by moisture loss during heating, ensuring flat processing stability.

Is Release Paper Environmentally Friendly? What Materials Are Recyclable?

With the rise of green manufacturing and ESG sustainability goals, recyclable liner materials are increasingly important.
Recyclable Options:
• CCK
• Glassine
• Steamer paper
• Writable kraft release paper
These materials support paper recycling systems and help reduce industrial waste — making them ideal solutions for environmentally responsible production.