PET Release Film for Adhesive Tape, Waterproof Membrane and Label Applications

UPASS PET Release Film is a silicone-coated polyester film designed to provide reliable release performance for adhesive products and industrial laminating processes. Manufactured using high-quality PET film and advanced silicone coating technology, it offers excellent dimensional stability, tear resistance, and puncture resistance throughout production and application.

PET release film is widely used as a release liner for adhesive tapes, self-adhesive waterproof membranes, labels, medical products, die-cutting materials, and composite materials. Compared with conventional release liners, PET film maintains better flatness and stability during coating, laminating, slitting, and converting operations.

With customizable thickness, release force, color, and coating structure, UPASS PET Release Film can be tailored to meet the requirements of different industries and adhesive systems.

Many adhesive products require a release liner to protect the adhesive layer before installation or end use.

However, low-quality release liners may experience stretching, wrinkling, tearing, or inconsistent release performance during production. These issues can lead to processing difficulties, material waste, and reduced product quality.

For manufacturers of waterproof membranes, adhesive tapes, labels, and industrial laminates, choosing the right release film is critical to maintaining production efficiency and ensuring consistent product performance.

A release liner must not only provide stable release properties but also withstand the mechanical and thermal demands of modern manufacturing processes.

UPASS PET Release Film is engineered to provide a stable and reliable release surface while maintaining excellent physical strength.

The polyester film substrate delivers outstanding dimensional stability and mechanical performance. Combined with a uniform silicone coating, it allows controlled release from various adhesive systems without damaging the adhesive layer.

Key advantages include:

• Excellent dimensional stability

• Excellent tear resistance

• Excellent puncture resistance

• Stable release performance

• Good surface smoothness

• Consistent silicone coating quality

• Heat resistance up to 170°C

• Suitable for UV curing and laminating processes

• Available in single-sided or double-sided silicone coating

• Customizable release force and specifications

These benefits help manufacturers improve production efficiency while reducing defects during converting and application.

PET release film is widely used as a release liner for self-adhesive waterproof membranes. It protects the adhesive layer during storage and transportation while ensuring easy removal during installation.

Suitable for double-sided tapes, industrial tapes, foam tapes, butyl tapes, and other pressure-sensitive adhesive products.

Used as a release liner for self-adhesive labels and specialty label materials requiring stable release performance.

The excellent dimensional stability of PET film helps maintain accuracy during die-cutting and converting processes.

Suitable for medical adhesive applications that require clean release and reliable liner performance.

PET release film can be used in various laminating and composite material manufacturing processes where a durable release surface is required.

PET release film consists of a polyester film substrate coated with a specially formulated silicone release layer.

When adhesive materials are laminated onto the silicone-coated surface, the release coating creates a controlled separation interface between the adhesive and the liner.

During application, the liner can be removed smoothly while preserving the integrity of the adhesive layer.

The PET substrate provides strength and dimensional stability, while the silicone coating ensures consistent release performance throughout processing, storage, and end use.

Single-Side Silicone Coating

Suitable for most conventional release liner applications.

Double-Side Silicone Coating

Recommended for specialized laminating and converting processes requiring release properties on both sides.

Different adhesive systems require different release levels. The release force should be selected according to the adhesive formulation and processing requirements.

For large-scale coating and laminating operations, wider roll widths can improve production efficiency. UPASS can provide slitting widths up to 2000mm.

Q1: What is PET release film?

PET release film is a silicone-coated polyester film used as a release liner for adhesive products, waterproof membranes, labels, and industrial laminates.

Q2: What thicknesses are available?

UPASS PET Release Film is available in thicknesses ranging from 12μm to 188μm.

Q3: What is the maximum temperature resistance?

The PET substrate can withstand temperatures up to 170°C, making it suitable for demanding industrial processes.

Q4: Can release force be customized?

Yes. Different release levels can be provided according to the adhesive system and application requirements.

Q5: What is the maximum width available?

The maximum slitting width can reach 2000mm to support large-scale coating and converting operations.

Founded in 2008, UPASS specializes in the manufacturing of release films and industrial functional films for global customers.

Our production capabilities include advanced silicone coating technology, customized slitting services, and strict quality control processes to ensure consistent product performance.

With years of experience serving the waterproofing, adhesive tape, packaging, and industrial materials industries, UPASS provides reliable PET release film solutions tailored to customer requirements.

Whether you need standard specifications or customized products, our technical team can help identify the most suitable release liner solution for your application.