PUR

The first reactive polyurethane (PUR) hot melts for perfect binding debuted at Drupa 1988. It was an undeniable adhesive achievement, an innovation that promised to push perfect binding beyond ordinary applications and into the dizzying heights of truly difficult jobs. Today, PUR is gaining popularity for use with UV coated papers as well as those with high filler contents. It's also suitable for books subjected to high stress, such as computer manuals, and products exposed to extreme temperature fluctuations, including car manuals and road maps. (See Table 1.) Nonetheless, PUR wasn't an overnight success. This article will briefly ...

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