Paper type is still an essential factor in any type of job being printed. However, its properties and characteristics are what determine the capabilities and limitations it has. Folding and paper strength are very important indications of the durability of archival papers.
What is Folding Endurance?
Once a job is printed and folded, you may notice the finished product exhibits splitting at the spine. This may be the result of your paper undergoing stress, causing the fibers and coating to lift. This problem can be corrected by understanding a paper’s folding endurance. Folding Endurance is measured by the paper’s ability to withstand multiple folds prior to breaking. It is defined by several characteristics such as fiber strength, the fibers ability to effectively delaminate at the score, and sheet pliability. An increase in the percentage of fibers will strengthen the paper’s durability. It is also important to take into consideration the grain direction to which the product is being folded; the endurance of the fold becomes greater against the grain because it performs a stiffer hold, which will less likely cause it stress. Continue reading “Folding 101”