OCA Adhesive: optically clear adhesive films for displays

Here, “OCA adhesive” refers to optically clear adhesive layers supplied as films or transfer tapes for optical bonds. OCA means “Optically Clear Adhesive”. The listed products should therefore not generally be treated as liquid adhesives. The specific product construction matters: the manufacturer's information for tesa® 88008, for example, describes a carrier-free acrylic adhesive with liners on both sides. Check the adhesive layer, liner and intended use of each product before selecting it for your display assembly.

The key details are the two substrates, their surfaces, the optical requirement and the intended lamination process. Adhesive layer thickness, part contours and potential contact with functional layers such as ITO also matter. Suitability for glass, polycarbonate or PMMA must be checked for each product; it cannot be inferred from the term OCA alone. The same applies to light transmission, haze and durability. Tell us about your layer structure and service conditions so we can review the relevant product information with you.

No. The OCA range includes different adhesive systems. The manufacturer's information for tesa® 88008 describes a pressure-sensitive optically clear tape, while the product record for 3M Contrast Enhancement Film CEF2802 describes a UV-curable formulation. This does not establish a single processing method for the whole category. Whether pressure, additional UV curing or a particular processing sequence is required must follow the selected product's documentation and the planned display assembly. Clarify these points before approving your production process.

Describe the starting material, both substrates, the required contour and the supply format. It also matters how the protective liners should be handled during cutting, die cutting and subsequent lamination. Krückemeyer GmbH processes suitable technical films for the application, for example as cut pieces or die-cut parts. Conversion does not replace verification of the optical requirements or the adhesive's suitability in the finished component. Information about geometry, processing and service conditions helps us agree on a technically appropriate format with you.