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One of the most important characteristics of flexible packaging is the ability to protect contents against harmful ambient pollutants such as moisture, gas, light, and odor. The packaging must also resist tear and puncture. Additional requirements specific to the product may call for added considerations such as chemical resistance or perhaps a specified opacity level of the laminate.
While no singular material can serve all functions, a series of many layers—where each serves one or two primary purposes—can be combined so that your product is protected and stays fresh. A lamination is just that—a sandwich of several engineered barrier films, designed to suit the needs of your product.
Generally, the laminating process happens after printing is completed. This is because artwork is reverse printed on the back side of the top layer of the lamination. Reverse printing is the preferred printing method (as opposed to surface printing) because the risk of the ink subsequently rubbing off is eliminated.[/one_third_last]
A Solventless Adhesive Process
FlexiblePouches.com employs a solventless lamination process, which
means that the bond between films is water proof, heat proof, and leak proof. Because the coatings and adhesive layers contain no solvents, the result will be a sturdy flexible laminate that will not separate.
The printing layer is most commonly an oriented polyester (PET) or polypropylene (BOPP or CPP) film, but nylon and paper based layers are sometimes used.