Silicone Coated Polyester Release Film

Silicone coated polyester release film is a controlled-release roll material for adhesive converting, die cutting, laminating, tapes, and labels. Films Protective Company manufactures this product for production teams that need stable release force, clean peel, smooth unwind, and reliable roll-to-roll processing. It can be supplied with single-side, double-side, or differential release coating, with liner thickness, winding direction, and release-side marking confirmed according to adhesive system and removal sequence.

Packing and Loading

Product Overview

After silicone coating, the polyester base film becomes a stable release liner for pressure-sensitive adhesive materials. It protects the adhesive during coating, storage, slitting, lamination, and die cutting, then separates cleanly when removed. Compared with paper liners, polyester film gives better dimensional stability, smoother adhesive contact, stronger web handling, and cleaner slit edges when narrow adhesive parts are stripped from the web.

For adhesive converting, thickness alone is not enough. Roll flatness, coating side, winding direction, roll tension, and adhesive compatibility affect line performance. Acrylic PSA, rubber-based adhesive, hot melt adhesive, water-based adhesive, and transfer adhesive may release differently on the same liner. Common thicknesses range from 12-188 um, and release force can be adjusted within a 1-600 g/inch reference range.

Single-side release fits label stock, single-coated tape, and die-cut parts with one adhesive face. Double-side release is used when tacky material may touch both liner surfaces. Differential release gives two sides different release values, helping transfer tapes, double-sided tapes, self-wound tapes, and layered adhesive laminates separate in the correct order.

Benefits

• Stable release force supports smooth unwind during coating, slitting, laminating, and die cutting.
• Polyester base film keeps narrow rolls flatter and reduces curl risk.
• Single-side, double-side, and differential release options fit tape and label structures.
• Smooth film contact helps reduce adhesive transfer marks during lamination.
• Clean slit edges can lower web break risk on high-speed converting equipment.
• Release-side marking and winding direction control help prevent reversed lamination.
• Residual adhesion testing, commonly targeting >=85%, helps protect downstream bonding.
• Coating anchorage, aging release, silicone transfer observation, and retained samples support repeat-order consistency.

How Should Single-Side, Double-Side and Differential Release Be Selected?

Single-side silicone coated polyester release film is selected for label stock, single-coated tapes, adhesive film lamination, and die-cut parts carried on a stable liner. Double-side coated polyester release film is better when tacky materials may contact both liner surfaces during winding or storage. Differential release is used when two sides must peel at different forces, such as transfer tapes or double-sided adhesive constructions. Check adhesive type, coating weight, unwind speed, roll tension, die-cut layout, dwell time, and removal sequence before approval.

TDS / Technical Data Sheet

What Should Be Checked Before Polyester Release Rolls Enter Die Cutting and Laminating?

Before die cutting or laminating, check the release side, winding direction, liner thickness, roll flatness, and adhesive contact side together. In kiss cutting, a stable polyester carrier helps keep cut depth consistent and reduces liner tearing when narrow adhesive parts are stripped from the web. In laminating, the liner should hold the adhesive during roll storage but peel cleanly during transfer. Trial rolls should also be reviewed for blocking, poor unwind, adhesive transfer, and reversed lamination.

Applications

• Pressure-sensitive adhesive tape converting
• Double-sided tape and transfer tape production
• Label stock and self-adhesive labels
• Adhesive film lamination and roll-to-roll processing
• Die-cut adhesive parts carried on polyester liner
• Kiss cutting, rotary die cutting, slitting, and rewinding

FAQ

What release level should be selected for adhesive converting?

Match the release level to adhesive chemistry, coating weight, dwell time, line speed, and removal stage. Easy release supports fast transfer, while medium or tight release reduces lifting during storage or waste stripping.

Can this film be supplied as differential release liner?

Yes. Differential release can be produced with two release values for transfer tapes, self-wound tapes, double-sided tapes, and layered adhesive constructions.

What should be tested before repeat production?

Check release force, residual adhesion, coating anchorage, silicone transfer, aging release, blocking, liner tearing, die-cutting stability, laminating behavior, and retained sample comparison.

Why use polyester film instead of paper release liner?

Polyester release liner rolls provide better dimensional stability, smoother surface contact, cleaner slit edges, and stronger web handling for precise die cutting, clean lamination, and high-speed converting.