PET Silicone Coated Release Film
- Base film: clear PET liner
- Thickness: 12-100 um
- Width: slit or jumbo roll
- Color: transparent or light translucent
- Coating: silicone release layer
- Use: tapes, labels, die-cut parts
PET Silicone Coated Release Film from Films Protective Company is made for adhesive materials that need a clean and stable PET liner during coating, converting, die cutting, storage, and final removal. As the manufacturer of this PET silicone release film, we focus on controlled release force, silicone release coating consistency, adhesive protection, roll flatness, and clean liner removal. It is mainly used for tapes, labels, and die-cut adhesive parts where residual adhesion, low silicone transfer, and actual adhesive testing must be checked before production approval.
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Product Overview
This film works as a PET release liner for pressure-sensitive adhesive materials. It is not positioned as a broad silicone coated polyester film for general industrial separation, and it is not an adhesive-coated PET film for bonding. Its practical role is to keep the adhesive surface protected, flat, and clean until the liner is removed at the correct converting or assembly stage.
The PET base gives the liner dimensional stability, transparency, smooth web travel, and reliable tension control during slitting, rewinding, laminating, and roll-to-roll converting. Poor winding tension or rough slit edges may cause wrinkles, uneven matrix stripping, adhesive edge lifting, or dispensing trouble. For this reason, roll flatness, slit width, unwinding behavior, and web tracking should be reviewed together instead of treating release force as the only specification.
The silicone release coating helps the adhesive stay on the liner during processing, then separate cleanly during tape lamination, label dispensing, transfer bonding, or die-cut part assembly. Films Protective Company can supply grade-dependent options based on film thickness, roll width, release value, core size, winding direction, slitting tolerance, and cleanliness requirement. Retained approved samples can be compared with later batches for release value, surface appearance, slit width, matrix stripping, and adhesive removal result.
PET identifies the carrier polymer, while the coated surface controls release behavior; review the difference between PET base film and PET release film before comparing thickness, release force, adhesive compatibility, and winding direction.
Benefits
- Supports controlled release force for acrylic PSA, rubber adhesive, silicone adhesive, and transfer adhesive systems.
- Helps protect the adhesive layer from dust, blocking, premature bonding, edge ooze, handling marks, and surface distortion.
- PET carrier improves roll flatness, tensile stability, caliper control, and web tracking during slitting and rewinding.
- Transparent film makes bubbles, particles, coating streaks, adhesive alignment, and surface contamination easier to inspect.
- Stable silicone anchorage helps reduce silicone transfer risk and supports residual adhesion after liner removal.
- Slit roll quality can be checked by edge condition, winding tension, roll flatness, and typical +/-0.5 mm to +/-1.0 mm slitting tolerance.
- Release behavior can be verified by 180-degree peel test, 300 mm/min peel speed, dwell time, average force, peak force, and actual adhesive sample.
How Does PET Silicone Coated Release Film Support Die Cutting for Tapes and Labels?
PET silicone coated release film provides a steady process surface during kiss cutting, rotary die cutting, slitting, matrix stripping, and waste stripping. The PET base helps reduce stretching, wrinkling, and web break risk, while the release layer lets the adhesive separate at the correct stage. For labelstock, double-sided tapes, transfer tapes, foam tapes, and electronic adhesive parts, the liner should not release too early during cutting. It also should not hold the adhesive so tightly that matrix stripping becomes slow or uneven. Clear PET helps operators check bubbles, dust, edge ooze, coating marks, and adhesive alignment before lamination or assembly.
TDS
Item | Typical Value |
Product type | PET silicone release film / PET release liner for adhesive protection and die cutting |
Base material | Polyester PET film |
Film thickness | 12-100 um, grade-dependent |
Common thickness options | 12 um, 23 um, 25 um, 36 um, 50 um, 75 um, 100 um |
Roll width | 20-1600 mm, slit roll or jumbo roll available |
Roll length | 500-6000 m, depending on thickness and roll format |
Core size | 3 inch / 6 inch paper or plastic core |
Surface appearance | Clear, flat, no visible wrinkle, bubble, or heavy coating streak |
Release coating | Silicone release coating for adhesive liner use |
Release force | Typical 5-150 g/25 mm, confirmed by adhesive and test method |
Test reference | 180-degree peel test, 300 mm/min, 23 C / 50% RH reference condition |
Residual adhesion | Typically >=85%, confirmed by adhesive system and dwell time |
Silicone transfer check | Low transfer grade available after actual adhesive validation |
Die-cutting check | Matrix stripping, waste lifting, edge ooze, and adhesive distortion observation |
Slitting tolerance | Typical +/-0.5 mm to +/-1.0 mm, depending on roll width |
Roll flatness | Controlled winding tension for smooth unwinding and rewinding |
Cleanliness control | Dust and particle observation by application requirement |
Batch check | Retained sample comparison for release value, appearance, slit width, and unwinding |
Applications
- Double-sided tape, transfer tape, foam tape, and specialty adhesive tape converting.
- Self-adhesive labels, durable labels, clear labels, appliance labels, and industrial labelstock.
- Die-cut adhesive parts requiring stable kiss cutting, matrix stripping, clean removal, and low edge lifting.
- Protective film adhesive coating, laminating, slitting, rewinding, sample approval, and retained-sample comparison.
- Clean liner use for selected optical or electronics adhesive processes where low silicone transfer and residual adhesion must be checked.
- Roll-to-roll converting where release value, edge quality, roll flatness, and batch consistency influence dispensing stability.
When Should Release Force Be Tested with the Actual Adhesive System?
Release force should be tested with the actual adhesive system before mass production when the adhesive formula, liner thickness, die-cut shape, storage condition, or dispensing method changes. A PET liner used with acrylic PSA, rubber adhesive, silicone adhesive, or transfer adhesive may show different peel behavior even when the same release coating grade is selected. Practical testing should record peel angle, peel speed, dwell time, average force, and peak force. After removal, the adhesive surface should also be checked for cleanliness, distortion, edge lift, and transfer marks.
FAQ
What is PET Silicone Coated Release Film used for?
It is used as a PET release liner to protect pressure-sensitive adhesive layers during coating, laminating, slitting, die cutting, storage, transport, and final removal. Common uses include tapes, labels, die-cut adhesive parts, and selected clean adhesive converting processes.
How should release force be selected?
Release force should be selected according to adhesive type, coating weight, die-cut shape, dispensing speed, dwell time, and removal method. Actual adhesive testing is recommended because the same liner may behave differently with acrylic, rubber, silicone, or transfer adhesive systems.
How is this film different from adhesive-coated PET film?
This product is a release liner, not the bonding layer. Adhesive-coated PET film carries an adhesive for bonding or mounting, while PET silicone release film protects the adhesive surface and is removed during converting, dispensing, or final assembly.
What should be confirmed before batch production?
Before batch production, confirm PET thickness, roll width, winding direction, release force, residual adhesion, slitting tolerance, roll flatness, matrix stripping behavior, adhesive surface condition, retained sample, and repeat-order specification.
