Protective Film Factory is a Silicone Release Liner Manufacturer supplying silicone-coated PET film and paper release liners for pressure-sensitive adhesive converting. The range covers single-sided, double-sided and differential-release structures for double-sided tape, foam tape, transfer adhesive, labelstock and die-cut components. Each liner is matched to the adhesive system, required release order and downstream equipment, with reel specifications and release performance confirmed before repeat production.
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When a specification calls for a silicone coating release liner, treat it as more than a backing sheet. It protects exposed adhesive while material is coated, laminated, rewound, slit, stored and converted, then separates at the required step. PET film is often selected where roll flatness, dimensional stability and precise cutting matter. Paper liners remain practical where stiffness, handling and converting efficiency are more important. The right grade also depends on contact time, humidity, storage temperature and line conditions. This reduces avoidable line changes when an approved liner enters repeat converting programs.
The category includes silicone release pet film for precision converting, Glassine liner for labels and tapes, SCK paper for general PSA applications, and CCK or PCK paper where lay-flat performance or moisture response needs closer attention. PET carrier thickness and paper grammage should be matched to the required stiffness, flatness and converting route. Single-sided liner protects one adhesive face. More complex constructions can use silicone coating on both sides with equal release or a differential-release profile.
Start with the adhesive construction, not thickness alone. For a double sided tape with release liner program, the easy-side / tight-side sequence may need to remain stable through lamination, rewinding and die cutting. Foam tape often needs firmer support around cut edges, while labelstock places more emphasis on kiss-cut depth and clean matrix stripping. PET release liner is commonly chosen when slit-width control matters. Before approval, confirm the release-force range with the actual adhesive, dwell condition, 90-degree or 180-degree peel method, peel speed and storage period. Where downstream bonding is critical, compare residual adhesion or subsequent adhesion after ageing to check whether the liner has affected the adhesive surface.
Differential release should follow the order in which adhesive faces are exposed. The tighter side keeps the construction together during lamination, winding, slitting and die cutting. The easier side is removed at the intended step. This balance can shift when adhesive chemistry, dwell time, storage temperature or converting speed changes. Record the easy-side / tight-side sequence on the approved specification and verify it with the actual adhesive before bulk use.
Item | Typical Range / Customizable Value |
Substrate | PET film / Glassine / SCK / CCK / PCK paper |
Coated side | One-side silicone coating / two-side silicone coating |
Release structure | Equal release / differential release |
Release level | Easy / medium / tight / grade-dependent release-force range |
PET carrier thickness | Typical category reference: 25-188 um, confirm by stiffness and die-cutting accuracy |
Paper grammage | Typical category reference: 40-160 gsm, confirm by paper grade and converting route |
Silicone coating | Confirm coating weight, anchorage and cure condition by adhesive system |
Roll format | Master roll / finished slit roll / custom-width reel |
Roll width | Typical category reference: 50-2000 mm, confirm by substrate and equipment |
Roll length | Typical category reference: 500-12000 m, confirm by substrate, core size and rewinding method |
Core size | Typical category reference: 3 in / 6 in or confirm by unwinding equipment |
Winding direction | Confirm coated side, easy-side / tight-side sequence and process |
Slitting quality | Confirm slit-edge cleanliness, width tolerance and roll flatness |
Release validation | Actual adhesive, dwell time, 90-degree or 180-degree peel, peel speed and ageing comparison |
Adhesive follow-up | Residual adhesion / subsequent adhesion comparison after ageing |
Quality follow-up | Silicone-transfer observation, retained sample, lot ID and repeat-order consistency |
As a Silicone Release Liner Manufacturer, Protective Film Factory prepares each silicone release liner roll around the approved substrate, release structure, reel dimensions, core size and winding direction. Reel dimensions should be matched to the substrate, core size, unwinding equipment and rewinding method. The reel label should identify the silicone-coated side, easy side, tight side and unwinding direction. Retained samples and lot identification keep repeat orders aligned with the approved trial. For multi-roll deliveries, keep the approved side orientation and reel-label format consistent across each production lot.
Run the trial with the actual adhesive construction and converting method. In kiss cutting, the tool must cut through the facestock and adhesive without damaging the silicone-coated surface below. Check liner caliper consistency, roll flatness, slit-edge cleanliness, web tension and matrix stripping. Also inspect for die strike, liner tearing, adhesive transfer, silicone rub-off and premature lifting. Keep the approved trial as the repeat-production reference and compare aged samples when storage conditions change.
PET suits precision slitting, flatness and die-cut stability. Glassine, SCK, CCK and PCK offer different balances of stiffness, moisture response and converting cost.
Not always. Acrylic, rubber-based and other PSA systems can interact differently with a silicone-coated surface. Confirm the grade with the actual adhesive and dwell condition.
Confirm the grade with the actual adhesive, coated side, dwell condition, peel angle, peel speed and converting process. One isolated value is not enough.
Provide substrate, thickness or grammage, coated side, release structure, release level, roll width, roll length, core size, winding direction and application.
