Energy savings plus mechanical reinforcement and rheology control

Versatile UV Curable Flexo Laminating Adhesive by Rahn

Adhesives Formulation

Applicable Type

Reactive Adhesives , UV/EB Cure Adhesives

Applicable Industrial Sectors

Flexible packaging: films / films & film / foil laminates

Applicable Base Polymer Properties

Ultraviolet light (UV) or electron beam (EB) curing laminating adhesives are creating significant interest for flexible packaging. Acrylate / methacrylate monomers and oligomers as well as photoinitiators are essential components of UV adhesives. Similar monomers and oligomers are used in EB adhesives, but they do not require photoinitiators. These adhesives are also characterized by a very low application viscosity.

Typical Formulation Ingredients

Phase

Ingredient

Parts by weight

Acrylate resin (Genomer 6083/TP, Rahn Inc.)

xxxx

Dipropylene glycol diacrylate

xxxx

Methacrylated phosphate ester (Genorad 40, Rahn Inc.)

xxx

Photoinitiator (Genocure DMHA, Rahn Inc.)

xxx

Typical Properties

Properties

Viscosity at 25°C, cps

xxx

T-peel test on OPP/OPP, Metalized OPP/PE, PE/PE, PE/Paper

xxxxxxxxxxxxxxxxx

Reactivity, mJ/cm2

xxx

Processing

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Resulting Properties

The above table shows a starting formulation for a flexo UV/EB cured laminating adhesive for versatile substrates. Upon curing, these adhesives offer a non-tacky film that provides excellent adhesive strength to a number of different substrates. However, when a specific application requires laminating opaque substrates, EB-curing adhesives may be necessary, since EB cure is not negatively affected by an opaque substrate.

(Source: Rahn Inc.)