Double Sided Tape Release Liner

Protective Film Factory is a manufacturer of double sided tape release liner for PSA tape coating, converting, die cutting, and controlled liner removal. The liner is made with silicone coating on one or both sides, and the release setting is matched to coating weight, rewinding tension, kiss cutting depth, rotary die cutting speed, and matrix stripping behavior. It helps keep the adhesive surface usable after peeling while reducing silicone transfer, adhesive pick-off, glue lift, edge distortion, and unstable waste removal.

Product Overview

A double sided tape release liner has to do more than cover adhesive. During coating, laminating, rewinding, slitting, die cutting, storage, and final application, it must hold the PSA layer firmly enough for processing, but still release in the correct order when the tape is used. If the liner is too loose, adhesive may lift during unwinding or matrix stripping. If it is too tight, peeling can stretch the adhesive edge or create rough removal.

Many double coated tape structures use different release levels on the two liner surfaces. The easy side is set for smooth final peeling, while the heavy side holds the adhesive during roll handling, rotary die cutting, and waste stripping. Typical release force can be adjusted at 5-20 g/25 mm on the easy side and 30-120 g/25 mm on the heavy side. A differential release ratio of 2:1 to 5:1 is commonly used to reduce liner confusion, adhesive pick-off, waste matrix glue pick-up, and premature edge lifting.

Benefits

Controlled two-side release: Helps tape unwind and separate in the correct sequence during coating, lamination, rewinding, and application.
Stable matrix stripping: Reduces small part lifting, waste matrix glue pick-up, adhesive edge deformation, and glue loss.
Cleaner kiss cutting: Consistent liner caliper helps the knife cut adhesive without cutting through the silicone-coated backing.
Rotary die cutting support: Suitable for continuous converting lines around 30-80 m/min after tape structure validation.
Lower silicone transfer risk: Helps maintain bonding strength by reducing release coating migration onto the adhesive surface.
Adhesive pick-off control: Useful for soft PSA, high coat weight adhesive, and small die-cut parts where glue loss can occur.

What should be checked when a double sided tape release liner is used for kiss cutting and matrix stripping?

For kiss cutting, the liner works as a process backing, not just a disposable carrier. Release force on both surfaces, thickness tolerance, silicone coating uniformity, curl control, and release balance should be checked before mass converting. When the heavy side is too light, adhesive parts may lift during matrix stripping or remain attached to the waste matrix. When the easy side is too tight, peeling may stretch the adhesive edge or move small parts out of position.

TDS

Item	Typical Value
Product type	Double sided tape release liner
Liner base material	PET film, glassine paper, kraft paper, PE-coated paper
Coating structure	Single silicone or double silicone coating
Release design	Easy side / heavy side differential release
PET film thickness	25 um, 38 um, 50 um, 75 um, 100 um, 125 um, 188 um
Paper liner weight	60-140 g/m2
Easy side release force	5-20 g/25 mm
Heavy side release force	30-120 g/25 mm
Differential release ratio	2:1 to 5:1 typical
Residual adhesion retention	>=85% after liner removal
Silicone transfer	Low transfer, checked by adhesive surface observation
Adhesive pick-off control	Checked after matrix stripping and roll aging
Thickness tolerance	+/-5% typical
Roll width tolerance	+/-1.0 mm typical
Rotary die cutting speed	30-80 m/min after trial confirmation
Heat aging check	70 C x 24 h
Humidity aging check	40 C / 90% RH x 24 h
Sample validation	24-72 h coating, cutting, stripping, peeling, and roll aging test recommended

Production Line

Applications

Double coated PET tape roll coating, laminating, slitting, and rewinding
Tissue tape and transfer adhesive tape with controlled easy/heavy release sequence
PE foam tape and acrylic foam tape requiring stronger liner holding force
Die-cut adhesive pads, spacers, gaskets, and mounting pieces
Rotary die-cut PSA parts for electronics, appliances, displays, and automotive trim
Soft PSA or high coat weight adhesive systems requiring adhesive pick-off control

How can residual adhesion, silicone transfer, and adhesive pick-off be controlled in double sided tape converting?

Clean release is not only about low peel force. During double sided tape converting, the silicone coating should release from the adhesive without contaminating the bonding surface. Excessive silicone transfer may reduce downstream adhesion on metal, plastic, painted panels, foam carriers, and electronic assembly parts. Residual adhesion testing confirms whether the adhesive still keeps usable tack after liner removal, with typical retention targeted at >=85% after release.

Loading Details

FAQ

Q1: Is this the same as ordinary silicone release film roll?

No. It is made for double sided tape coating and converting, with easy/heavy release control and die cutting stability.

Q2: Can the release force be adjusted?

Yes. Easy side and heavy side release force can be matched to acrylic, rubber, silicone, or foam tape adhesive systems.

Q3: Which is better, PET film liner or paper liner?

PET film liner suits clean, precise, low-dust converting. Paper liner suits thicker tapes, stiffness, and cost-sensitive production.

Q4: What should be tested before mass production?

Check release force, differential release ratio, residual adhesion, silicone transfer, adhesive pick-off, kiss cutting, and matrix stripping for 24-72 h.