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Use of Solvent-Free Adhesives for Food Packaging

Posted By ASC, Tuesday, July 28, 2015

The advent of solvent-free adhesives has brought about numbers changes in the packaging industry and in particular in food and beverage packaging. Manufacturers have been able to develop flexible packaging and pouches, in response to customer’s wants. Packages with solvent-free adhesives are often lighter and require less space for display, storage and shipping. Often, this is accomplished with solvent-less polyurethane laminating adhesives. These adhesives are either one-component or two-component systems, which provide good clarity, temperature resistance and a barrier to humidity. The adhesives are composted of isocyanate compounds, often blended with polyester or polyether. They are used to join layers of films, foils, or paper in high-performance packaging. Solvent-free adhesives do have some disadvantages, namely lower initial tack and longer cure times. However, the opportunity to avoid volatile organic compounds means solvent-free adhesives have become a popular option for food & beverage packaging.



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