There are many connection and pass-through designs for picture books and map books. Simply using the binding processing method, the picture loss of the connection and pass-through versions after milling is large, and it is difficult to read. The processing method of simply using lock-line ordering has no loss on the screen of the connection and the version, and the effect of flipping is also good. However, the sticky cards and hand-made books later are not only time-consuming and labor-intensive, but also can not ensure the beautiful and consistent appearance. Therefore, we thought of using the binding machine to cover the woolen book after the thread lock processing, and the actual effect is also very good. Now the specific methods and the links that should be noted are introduced as follows.
1. Put the back of the woolen book pulp after the lock thread is flattened. It should be noted that the thread must be tightened when the lock thread is processed, otherwise the inner pages will easily go out after the book is finished.
2. Lower the milling back and slotting table on the machine of the perfect binding bag so that it can not reach the back of the book.
3. The temperature of the glue pot of this machine is set to be slightly lower than the normal temperature (approximately 20 ° C) when it is used for glue binding. The purpose is to make the hot melt glue thicker to increase the thickness of the glue layer. The characteristics of hot melt adhesives are that when the temperature is high, the glue is thin and the glue layer is thin, while when the temperature is low, the glue is thick and the glue layer is thick.
4. Cut the offset paper with a fixed weight of about 70g / m2 into long strips equal to the length of the woolen book, and the width is slightly wider than the thickness of the woolen book. Offset paper is also acceptable.
5. Binding and binding the machine on the hair book, but directly gluing the rubber wheel without milling and grooving. At the position of the book, the offset paper cut in advance is manually re-entered and glued to the back of the book . This process requires the back of the book to be flat, the glue layer to be thick and even, and the gaps between the signatures to be filled and leveled, otherwise there will be black holes in the final cut product.
6. Tear off the remaining side of the unbonded offset paper from the dried and formed woolen book, and prepare the cover.
7. Adjust the temperature of the glue pot to be slightly higher than the normal use temperature for glue binding, about 10 ℃ higher, so that the glue liquid is thinner, the glue layer is thinner, and the cut cover is put on the machine for use.
8. According to the normal operating procedures of the book binding, the book that has been glued once will be wrapped on the cover after passing through the rubber wheel.
9. After three-sided cutting, the package leaves the factory.
At this point, the processing of the cover on the machine for the binding of the binding book for the book binding with thread lock is completed. However, it should be noted that if the white cardboard is wrapped first and then the looper cover is applied, the first gluing method remains unchanged. The white cardboard must be indented and the adhesive layer should be slightly thicker during the second gluing. The general principle is that the thicker the cover material, the thicker the adhesive layer. In addition, the voided (empty glue) hair books removed after the first glue application must be repaired before the cover. The specific method is to increase the temperature of the ironing board of the flat book ironing machine and push the appropriate amount of empty glue hair books. Press the hole, observe the melting of the hot melt adhesive from the flush side of the back of the book, and take it out in time after seeing the gelation, and after drying and molding. The skewed back of Mao Shushu can be corrected by holding a single book on the ironing board of the ironing machine.
Picture books and map books processed by this method have a good appearance, and the back of the book is viewed from the sky and the foot surface. The glue layer and the signature are smooth on the outside, and the inside is jagged, which is very beautiful. After turning over, the page is uniform and complete, and the effect is very ideal.
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