Kraft Release Paper

Kraft release paper, also commonly referred to as Kraft Release Liner, is a type of protective paper designed to prevent adhesive materials from sticking prematurely. Its primary function is to cover and protect pressure-sensitive adhesives (like those on tapes, labels, or sticky industrial products) until they are ready for use.

Core Structure and Types

Typically, kraft release paper features a multi-layer structure:

• Base Layer: The foundation is kraft paper, known for its high strength and durability.
• Barrier Layer (Optional): Often, a layer of Polyethylene (PE) coating is applied to the base paper. This coating prevents the release agent from penetrating the paper and provides a smooth surface.
• Release Layer: The top layer is a silicone coating (or other release agents), which provides the non-stick properties. The ease of peeling, known as release force (ranging from light to heavy), can be customized according to application needs.

It can be categorized into different types, such as PE-coated kraft release paper and those with single or double-sided silicone coatings .

Key Features and Advantages

Kraft release paper is valued for several important characteristics:

• High Strength: The kraft paper base offers excellent internal strength and durability, making it suitable for various industrial processes.
• Water and Moisture Resistance: The PE coating enhances its resistance to water, moisture, and oils.
• Customizable Release Force: The silicone coating can be formulated to achieve specific peel-off strengths, which is crucial for different applications.
• Die-Cutting Performance: Its good dimensional stability and tightness make it suitable for precision die-cutting, especially in label production.

Primary Applications

This paper is widely used across multiple industries:

• Adhesive Tape Industry: Often used as a liner for kraft paper tapes and other adhesive tapes.
• Label Industry: Serves as a backing paper for labels, especially in die-cutting applications for stickers and shipping labels.
• Waterproofing Membranes: Applied in the production of waterproofing materials.
• Packaging: Used for gift wrapping and protecting sticky products.


In a Nutshell
In summary, kraft release paper is a versatile, silicone-coated paper valued for its strength, protective qualities, and customizable non-stick properties, making it essential in adhesive and packaging industries.