Silicone Coated PET Release Film

Protective Film China Company is a manufacturer of silicone coated pet release film for glue coating, lamination, slitting, die cutting, and roll storage. It is made with a stable PET base and a controlled silicone release layer, helping adhesive materials stay clean during processing and separate smoothly when needed. We produce single-side and double-side silicone release PET film with adjustable 5–700 g/inch peel range, high residual adhesion rate, and steady roll-to-roll quality.

Product Overview

This PET silicone release liner is used as a carrier and release layer for pressure-sensitive adhesive materials. The PET base gives the film tensile strength, dimensional stability, low shrinkage, and a smooth coating surface. These details matter when the roll runs through lamination, rewinding, slitting, and die-cutting lines, because a weak or unstable liner can stretch, curl, or affect the final adhesive part size.

In our production checks, we do not judge the liner by one quick hand-peel sample. Peel value is checked at the left, center, and right side of the roll, because uneven coating can create local tight release, glue lifting, roll blocking, or rough die-cut edges. For label stock, medical patches, and electronic die-cut parts, aged adhesion and silicone transfer control are also checked before bulk use, since poor transfer control may reduce later bonding performance.

This siliconized polyester release film can be made with easy, medium, or tight release levels. Acrylic, rubber, hot melt, medical gel, and electronic adhesive systems often need different peel designs. The correct setting depends on adhesive chemistry, coating weight, line speed, winding tension, storage condition, and the release order required during the converting process.

Benefits

• Controlled peel performance:The release range can be adjusted around 5–700 g/inch to match tape, label, patch, and electronic adhesive material production.
• High residual adhesion rate:A common control target is ≥85%–90%, helping reduce silicone transfer risk and protect later bonding strength.
• Smooth coated surface:Uniform coating helps avoid tight peel spots, fisheyes, pinholes, silicone skip, and uneven separation across the roll width.
• Stable PET base:Low-shrinkage PET helps the liner stay flatter during coating, lamination, rewinding, slitting, and rotary die cutting.
• Single-side or double-side structure:One-side coating works for many tape and label materials; double-side or differential release suits transfer adhesive and multi-layer adhesive structures.
• Cleaner machine performance:A well-made polyester silicone release liner can reduce glue lifting, edge curl, liner breakage, roll blocking, and rejected rolls.

How Does Release Force Affect Adhesive Converting Quality?

Release force is not simply an “easy peel” value. If the peel level is too light, the glue may lift during unwinding, die cutting, or roll storage. If it is too tight, labels, medical patches, or electronic adhesive parts may stretch during removal. For a PET release liner film, testing should include pressure, rewinding, and heat aging, not only a fresh sample. A stable peel curve gives cleaner edges, better cutting accuracy, and fewer roll problems during production.

TDS

Applications

• Pressure-sensitive tape release liner
• Label stock and sticker material carrier
• Transfer adhesive and double-sided tape liner
• Foam tape and film adhesive production
• Medical adhesive patch, wound dressing, and medical tape liner
• Electronic adhesive material and precision die-cut parts
• Optical adhesive, OCA, and clean adhesive lamination process
• Temporary process liner for glue coating and roll storage

When Is Double-Side Silicone Coating Better Than Single-Side Coating?

Double-side silicone coating is useful when adhesive materials need controlled separation from both liner surfaces. For simple label or tape backing, single-side coating is often enough. For transfer adhesive, double-sided tape, foam tape, medical patches, and electronic die-cut materials, two different peel values can decide which adhesive layer releases first. This helps reduce liner lifting, glue shifting, and roll blocking. Many lines use differential release because the release order affects lamination accuracy and final part handling.

Production Line

Loading Details

FAQ

Can the release force be customized?

Yes. The peel level can be adjusted according to adhesive type, coating weight, aging condition, and processing speed.

How do I choose PET thickness?

Thin PET supports flexible adhesive materials and cost control. Thicker PET gives better stiffness, winding stability, and die-cut handling.

Is double-side silicone coating available?

Yes. Single-side silicone, double-side silicone, and differential release structures can be produced for different release sequences.

What should be tested before bulk use?

Test release force, residual adhesion rate, heat aging, roll flatness, slitting edge quality, and adhesive behavior after die cutting.