Optically Clear Double Sided Mounting Film

Protective Film China Company is a manufacturer of optically clear double sided mounting film for display windows, nameplates, acrylic panels, glass covers, PC overlays, and PET control panels. This product is a clear double sided adhesive layer, not a regular transparent PET base film. It is made for visible-area bonding where high light transmission, low haze, stable peel strength, strong shear holding, and clean die cut or kiss cut conversion are required.

Product Overview

This mounting film is used when the adhesive remains inside the visible area of a finished part. In display windows, backlit icons, machine nameplates, transparent labels, acrylic covers, and glass panels, even a small cloudy edge or trapped air mark can affect the final appearance. For production approval, clarity should be checked together with haze, adhesive thickness, bonding surface, liner release, and cutting stability.

The film has a clear adhesive layer on both bonding sides and leaves no obvious color cast after correct lamination. In sample testing, 25–50μm adhesive layers are often used for flat glass, acrylic, and PET windows where a thin, clean bond line is preferred. 75–100μm adhesive layers are more useful for PC overlays, printed panels, or nameplates with a small ink step, because the thicker layer can help bridge minor surface gaps. Peel strength also changes after wet-out, so the bonded part should be checked soon after application and again after 24 hours of standing.

The double liner structure is not only for protection. One liner supports the first lamination step, while the other keeps the final bonding side clean until assembly. For narrow frames, holes, logo windows, and small nameplate shapes, liner stiffness and release balance affect whether the adhesive part stays flat, strips cleanly, or stretches during kiss cutting. During factory checks, edge squeeze, liner curl, dust points, coating lines, visible gel marks, and roll-end flatness are inspected before rolls are released.

Benefits

• Clear viewing area:High light transmission and low haze help LED indicators, symbols, windows, and backlit graphics remain readable.
• Stable panel attachment:Balanced peel strength helps the transparent mounting adhesive film bond to glass, acrylic, PC, PET, and printed overlays after proper cleaning.
• Better edge control:Strong shear holding helps reduce slow movement, edge lifting, and adhesive flow on vertical nameplates or narrow frames.
• Practical thickness choice:25–50μm suits flat transparent parts; 75–100μm helps with small ink steps or printed edges.
• Cleaner converting:Double side liners support die cut clear adhesive film parts, kiss cut frames, holes, and narrow borders.
• Factory quality checking:Adhesive thickness, liner release, coating uniformity, gel marks, dust points, roll flatness, and cut edges can be checked.

How does this film keep display windows and nameplates visually clear?

The film keeps display windows clear by reducing the visible air gap between two transparent or printed parts. A good optically clear adhesive film must wet out smoothly on glass, acrylic, PC, or PET surfaces. Dust, oil, uncured ink, plastic outgassing, or uneven lamination pressure can still create bubbles, white edges, or delayed haze. For backlit nameplates and control windows, the bonded sample should be checked under both normal light and backlight, because light scatter may appear only after illumination.

TDS

Applications

• Display window bonding for equipment panels
• Nameplate attachment with clean transparent edges
• Acrylic and glass panel bonding
• PC overlay lamination for control panels
• PET panel bonding for printed windows and symbols
• Backlit graphic windows requiring low haze
• Die-cut adhesive frames for narrow borders and holes
• Kiss cut adhesive parts for faster assembly

What should be checked before die cutting or kiss cutting?

Before die cutting or kiss cutting, the adhesive thickness, liner type, release force, cutting tolerance, and waste removal behavior should be checked with the real part design. Very thin adhesive layers give a neat bond line, but they need flat surfaces and stable converting tension. Thicker layers can help with small surface steps, but cutting pressure must be controlled to avoid edge squeeze. A real-size test is better than a simple square sample, because narrow borders reveal liner lift, adhesive stretch, edge squeeze, or waste-removal problems faster.

Production Line

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FAQ

Is optically clear double sided mounting film the same as clear PET film?

No. It is a transparent mounting adhesive film used to bond two parts together. Clear PET film is usually only a base film.

Can it bond glass, acrylic, PC, and PET panels?

Yes. Final adhesion depends on surface coating, ink condition, cleaning method, lamination pressure, and standing time.

Which adhesive thickness should I choose?

25–50μm is often used for flat transparent windows. 75–100μm is better for printed overlays or slight surface steps.

Can it be supplied for die cut or kiss cut parts?

Yes. The double liner structure supports roll converting, die cutting, kiss cutting, narrow frame parts, clean waste removal, and easier liner removal.