The glue binding position of the paper bag machine is on the spine and the side, and the hot melt glue used is also different. For example, the performance of the two is also different, and the hot melt temperature is different. It is important to grasp the appropriateness of the glue and the quality of the glue. If the temperature of the melt is too high, the melt will be too thin and the viscosity will be insufficient. If the melt temperature is too high, the glue will be too thick to penetrate and flow, and some will appear as small granular blocks attached to the side surface. The cover is wrinkled and hollow. It is worth mentioning that at present, hot melt adhesives produced by different manufacturers have different performances (we have such an opportunity in actual use). Take the hot melt temperature of the hot melt adhesive used in our factory as an example. Some side glue has a temperature of 120°C, and the hot melt temperature of the spine glue is 135°C, and some side glue has a hot melt temperature of 180°C and the spine glue has a hot melt temperature of 200°C. Therefore, it is necessary to master the appropriate process parameters according to the properties of the material in use to ensure the quality of the glue. Under normal circumstances, after gluing, the appropriate width of the side glue covering is 4mm-5mm, and the spine asks you to penetrate and fill the milling groove. If the glue is uneven, the glue is too thin, and the cover of the paper bag machine pallet is not replaced as required (or the height is adjusted appropriately), the book after the plastic bag is prone to hollow ridges and wrinkled backs. This is something that must be controlled and inspected during the plastic packaging process.

A process that can not be ignored in the whole process of wireless binding of the finishing work before the paper bag machine glue bag. If the paper bag machine enters the plastic bag without finishing in the finishing process, then the plastic bag will have many kinds of poor quality problems such as peeling, loose pages, empty ridges, and wrinkled ridges. Sorting is to bundle semi-finished book stickers. In order to make the compacted spine stiff and firm, after compacting and binding, paint the back of the book with polyethylene glue again. After the polyethylene glue on the brush dries, loosen the binding rope, and then The card is separated and transferred to the plastic bag.