Technical Issues and Treatments in Rubber Books (2)

Second, the bookbinding machine technology improvements

1, the treatment of the slotting knife: From the actual operation of a printing company to see the results, the original slot machine blade plastic knife top (edge) is too narrow, especially the 5cm thick book glue slot depth is not ideal, the book The three-fold or four-fold adhesion and tear resistance of the posts have a certain quality effect. The solution is: the top of the slotted knife can be marked with a grinding wheel, so that the result of the slotting of the slotted knife is "U" type, the slot depth is 1.2mm, and the slot is 1.5mm. The distance between the groove and the groove is about 4mm, and the groove angle of 60° is the best, thereby increasing the amount of glue applied to the “U” part of the groove of the signature and increasing the bonding area within the signature. After flattening the book block, it ensures that the inner pages are not easy to fall off and pages are dropped.

2, with pre-melted plastic pot: Some plastic wrap machine without hot melt pre-melting pot, due to improper glue and other reasons caused by the temperature drop, continue to make plastic will be brittle cracks, cover shelling, inside the page and so on. In order to solve the key problems affecting the quality, it is best to prepare another hot melt glue pot during production. After the temperature of the hot melt adhesive in the glue pot reaches the standard temperature of the package, the hot melt adhesive is needed according to the production process. Pour directly into the running rubber roller pot to ensure that the normal production of the plastic bag machine does not stop. The power supply of the pre-melt glue pot needs to be equipped with a pressure regulator to control the glue temperature and ensure that the glue temperature is stable and not aging. The pre-melting time of the second plastic pot must be determined according to the first glue pot needs to be added, so as not to affect the progress of the package of the plastic packer.

3, glue pot equipped with double thermometer: In order to accurately detect the temperature of the plastic pot, in addition to the original thermometer with a machine, it is best to add a mercury thermometer and a thermometer metal shell, put the location does not affect the booklet for the standard.