Dimensional stability of paper is an
important index of paper, which has an important impact on the stability of book printing quality. Dimensional
stability of paper, also known as shape stability, refers to the change of
paper size (shape) when the paper moisture changes, expressed as the percentage
of the original size of paper before and after the change of paper moisture.
Generally speaking, all kinds of paper have elongation when absorbing water and
shrinkage when reducing water. The rate and degree of change vary with the
types of fibers in paper. The greater the rate and degree of change, the worse
the shape stability of paper. On the contrary, the better the shape
stability.
"Causes
of paper deformation and its impact on book
printing quality" In the process of printing manufacture and use, there are many factors affecting
paper deformation. Physicochemical properties of pulp, beating conditions, selection
of chemicals and fillers, paper-making performance, equipment status of paper
machine and water gain and loss in the process of use will affect paper size.
Change. Here we only discuss the size changes caused by moisture gain and loss
in paper transportation and printing.
