Systems not requiring glue
The ecological alternative
"Less is more" sums up the advantages offered by glue-free systems. "Less" refers to the fact that no adhesives and less time is required during the conversion process. In addition, they give you "more" by offering increased production security and efficiency when converting.
Glue-free systems lead to greater production security and therefore higher reliability as they eliminate adhesives – a significant risk factor. Given that no glue is used, they cannot cause any damage: for example, if the glue is applied incorrectly, the blanket might tear off or rip inside the printing machine.
Glue-free systems increase efficiency by saving you money, time and materials. Firstly, they eliminates the costs of adhesives. Secondly, they save you not only the time required for mixing, applying and drying but also the laborious task of cleaning up the glue application system. The enormous amount of time saved when converting printing blankets more than doubles your output.
The future of blanket bar conversion
Historically, the only successful glue-free barring systems utilized rivets, screws, and other types of mechanical connections. Because of changes in printing blanket structure as well as higher running speeds on a variety of printing presses, these mechanical systems approached their technical limits. In order to compensate for the increased stress on the finished blankets, converters began using glue on the blanket bars. One of the biggest advantages of using glue was that it distributed the torque from the press across the width of the bar.
Then, in 2008, PRO Blanket Bars revolutionized the converting industry by introducing the glue-free ZIP-Bar, an innovative and environmentally-friendly alternative to conventional glue-based converting. While based on the earlier idea of a mechanical connection, the ZIP-Bar increased the number of stress points across the blanket, which allowed it to achieve a much higher bond strength.
Based on our extensive experience with the PRO-ZIP, we developed the SP-EVOLUTION, a further improvement in glue-free bar technology. Not only does the SP-EVOLUTION improve the pull-strength of the finished blanket, but it also improves the look of the blanket by eliminating blanket “wave” that can result from converting with traditional mechanical systems. In addition, the SP-EVOLTUION is easier to mount on the blanket, which decreases handling time. Yet another innovation from PRO Blanket Bars that combines environmental-friendliness, stability, and sustainability.