Board Book Printing die-cutting products, in addition
to paper hair, paper dust, explosion line and mark line unclear is also a
frequent problem, because of many reasons, only prior prevention, will be
possible problems in the bud.
(1) Most of the paper used in the board book
printing is about
350 g/m2 of gray-bottom white board paper or white card paper, because of
climate or other reasons, the paper is easily brittle due to the decrease of
water content, resulting in die-cutting indentation when the line can not be
perfectly reproduced, pressure on the burst line, light mark line is not raised
and powerless. To this end, before die-cutting can be humidifier to increase
the water content of paper, so that the paper slightly flexible after the machine
die-cutting.
(2) If the paper is thicker and the equipment is not
adjusted in operation, it is easy to produce explosive or mark lines, and
reasonable indentation steel lines should be selected according to the actual
paper and mark lines.
(3) If the lining under the steel plate is not reasonable
for board book printing, the die cutting pressure will change, and the
explosive or mark line will appear on the product.
(4) If the bottom template is too thick or unreasonable
sponge rubber strip is selected, the indentation line width is different and
explosive line, the bottom template and sponge rubber strip of the appropriate
thickness should be selected, and the indentation line width should be adjusted
appropriately.
(5) If the paper powder
dropped from the incision is accumulated in the slot, the explosive line or
mark line is not clear, and the operator should strengthen self-examination to
remove the paper powder and foreign body in time.