UV-Cured PP Release Film for SBS & APP Modified Bitumen Waterproof Membranes

Product Overview

UV-Cured PP Release Film is a silicone-coated polypropylene release liner designed for SBS and APP modified bitumen waterproof membranes. It acts as a protective layer for self-adhesive asphalt surfaces during manufacturing, storage, transportation, and installation.

Featuring advanced UV curing technology and a silicone-coated surface, the film delivers stable release performance, excellent heat resistance, and high subsequent adhesion. Compared with conventional release liners, it provides improved dimensional stability and more consistent peeling performance, helping waterproof membrane manufacturers improve both product quality and installation efficiency.

UPASS UV-Cured PP Release Film is widely used in roofing waterproofing systems, underground waterproofing projects, basements, tunnels, and other applications where reliable adhesive protection and easy release are required.

Cause

In self-adhesive waterproof membrane production, the adhesive asphalt layer must remain protected throughout the supply chain before installation.

However, traditional release liners often present challenges such as uneven release force, difficult peeling, asphalt bleed-through, film deformation under high temperatures, and reduced adhesive performance after liner removal.

These issues can negatively impact membrane quality, storage stability, installation efficiency, and customer satisfaction.

As SBS and APP modified bitumen waterproof membranes are increasingly used in demanding construction environments, manufacturers require release liners with higher performance, better heat resistance, and more reliable release characteristics.

Solution

UPASS UV-Cured PP Release Film is developed to address the challenges faced by modern waterproof membrane manufacturers.

The polypropylene base film provides excellent mechanical strength and dimensional stability, while the UV-cured silicone coating ensures smooth and controlled release performance.

Key benefits include:

• Stable and consistent release force
• Smooth peeling without adhesive damage
• Excellent heat resistance
• High subsequent adhesion
• Reduced silicone transfer
• Improved storage stability
• Reliable adhesive protection

These advantages help improve manufacturing efficiency while supporting smooth membrane installation on construction sites.

Specifications

Application

SBS Modified Bitumen Waterproof Membranes

Designed to protect the adhesive layer and provide stable release performance throughout production and installation.

APP Modified Bitumen Waterproof Membranes

Helps maintain membrane cleanliness while improving storage stability and peeling performance.

Self-Adhesive Roofing Systems

Supports efficient membrane installation in residential, commercial, and industrial roofing projects.

Waterproof Flashing Tapes

Suitable as a release liner for butyl tapes and waterproof sealing products.

Underground Waterproofing Projects

Widely used in basements, tunnels, foundations, bridges, and infrastructure waterproofing systems.

How It Works

During membrane manufacturing, the UV-Cured PP Release Film is laminated onto the adhesive asphalt surface.

The silicone-coated side prevents the adhesive layer from sticking during winding, storage, transportation, and handling.

When the waterproof membrane is ready for installation, the release film can be removed easily and cleanly, exposing the adhesive surface without affecting its bonding performance.

The controlled release force ensures smooth peeling while maintaining the integrity of the waterproof membrane's adhesive system.

This process helps improve installation efficiency and supports long-term waterproofing performance.

                                                                                            Custom Embossing

How To Choose

Choosing the correct UV-Cured PP Release Film depends on the membrane structure, adhesive formulation, and end-use environment.

For SBS Waterproof Membranes

A medium release force is generally recommended to achieve smooth peeling while maintaining adhesive protection.

For APP Modified Bitumen Membranes

Products with excellent heat resistance are recommended due to the higher processing and service temperatures associated with APP systems.

For High-Speed Production Lines

Release films with strong tensile properties and stable winding performance can improve manufacturing efficiency.

For Hot Climate Applications

PP release films are often preferred because of their superior dimensional stability and heat resistance compared with conventional alternatives.

For Customized Production Requirements

Thickness, width, color, release force, and coating structure can be customized to meet specific manufacturing needs.

FAQ

What is the main function of UV-Cured PP Release Film?

It protects the adhesive surface of self-adhesive waterproof membranes during production, storage, and transportation while ensuring smooth peeling during installation.

Why choose PP release film instead of PE release film?

PP release film generally offers better heat resistance, dimensional stability, and mechanical performance, making it suitable for SBS and APP modified bitumen waterproof membranes.

What waterproof membrane products can use this release film?

It is widely used in SBS modified bitumen waterproof membranes, APP modified bitumen waterproof membranes, self-adhesive roofing membranes, waterproof tapes, and other construction sealing materials.

Can the release force be customized?

Yes. UPASS can provide customized release force options according to different adhesive systems and application requirements.

Is single-side or double-side silicone coating available?

Yes. Both Single-Side and Double-Side Silicone Coating structures are available depending on the product design and application requirements.

Why Choose UPASS

UPASS specializes in industrial functional films and release liner solutions for waterproof membrane manufacturers worldwide.

Through advanced UV curing technology, strict quality control, and customized manufacturing capabilities, UPASS provides reliable release film solutions that help customers improve product consistency, production efficiency, and installation performance.

Whether for SBS modified bitumen waterproof membranes, APP waterproofing systems, roofing applications, or construction sealing products, UPASS delivers dependable release liner solutions tailored to modern waterproofing requirements.

Conclusion

As waterproof membrane manufacturers continue to pursue higher product quality and more efficient production processes, release liner performance has become increasingly important.

UPASS UV-Cured PP Release Film combines UV curing technology, Single-Side or Double-Side Silicone Coating, excellent heat resistance, and high subsequent adhesion to provide reliable protection for SBS and APP modified bitumen waterproof membranes.

With stable release performance and customizable specifications, it is an ideal release liner solution for modern waterproofing applications.