The use of different paper stocks, too, changes regularly. Some chemicals can no longer be used because of raw material availability, a situation that is out of the binder’s control. A plethora of coatings – such as UV, aqueous, and standard varnishes – are constantly changing in composition due to the varying availability of certain chemicals.
To complicate that selection, the coatings and paper stock that have been used successfully with certain glues frequently change in composition, causing the glues to lose their effectiveness. Glues must be carefully selected to adhere to whatever coatings or finishes have been required by the bindery’s customers. Given these factors, binders also must weigh the cost savings of using a lower-priced glue against the possibility of performance failure in a specific application. Binderies must select the right glue after considering such factors as the intended end use of the product, the specified coatings or finishes, different types of paper stock, and storage conditions. This results in a constant balancing of pricing and the wide range of product effectiveness. Today, trade finishers face the challenge of having to select the most effective gluing product for a myriad of specific applications.
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