PUR ‘Spine Cam’ and Nozzle Technology Ensures Consistent Glue Application
The camera then reads each individual book after the PUR is applied against the sample taken. The system is an important quality control mechanism to ensure the consistency of the glue film and the integrity of the finished product.
“In the traditional world of hot melt, you would wait a few minutes for the book to cool and then perform a pull test,” says Steven Calov, Postpress Product Manager for Heidelberg USA. “PUR, however, cures with time and moisture to create the chemical bond. In this case you may need 2-4 hours to perform the same test based on the manufacturer’s recommendation for the glue. To overcome this obstacle, we developed a system to monitor the glue application to the spine to ensure that each book is the same as the sample taken when the system is set up.”
Cool stuff. To learn more about these devices, please contact your local Heidelberg Postpress Specialist, or contact Steven Calov directly at Steven.Calov@heidelberg.com
Trish Witkowski is Chief Folding Fanatic at the online community foldfactory.com. She holds a bachelor of fine arts degree in graphic design and a master of science degree in Graphic Arts Publishing from Rochester Institute of Technology's School of Printing Management and Sciences (now the School of Print Media).
An award-winning designer, Trish held the position of creative director for a Baltimore-based agency for six years, and has taught design and desktop publishing at the college level. She has a specialized expertise in the area of folding and is the creator of the FOLDRite™ system, a 2004 GATF InterTech™ Technology Award winner.
Trish frequently publishes articles for graphic arts industry publications, and has written three books on the topic of folding: A Field Guide to Folding, Folding for the Graphic Arts: A Teacher's Handbook, and FOLD: The Professional's Guide to Folding.