In order to prevent the pages of the wireless binding from being unloaded and opened, in addition to paying attention to the above three factors, the influence of climate and environmental factors cannot be ignored.
It is said that the wireless binding process is very mature in foreign countries, especially in Germany and France, more than 90% of paperback books are made of wireless binding, and there are few phenomena such as page breakting and opening of glue. Why are so many good quality problems in our country? In October 2012, the author had the privilege of visiting the Frankfurt International Book Fair. With this question in the pavilion, he paid special attention to the bookbinding process in various countries. As a result, he was surprised to find that all the books sent by small countries were mostly made by wireless adhesives. The books that are sent to the countries with wide borders (such as India, Russia, the United States, etc.) rarely see the shadow of the wireless binding, basically based on the "lock line + glue binding" process. The reason is still related to the climate.
We know that EVA hot melt adhesive is a chemical polymer that changes due to the influence of the climatic environment, such as aging, brittleness, etc., that is, the smaller the climate change, the more likely the book will be off the page and open. small. Based on this, it is inferred that the small country is more suitable for the process of wireless binding, because its land area is not large, the latitude difference between the north and the south is very small, and it is limited by the climate environment. The big countries are different. Take China as an example. China's north-south latitude spans nearly 50 degrees, and the distance is about 5,500 kilometers. It is also a continental monsoon climate. Different regions have different climatic characteristics, and the temperature and humidity vary greatly. In such a climatic environment, it is difficult to ensure that the EVA hot melt adhesive does not change over time.
So is it not appropriate for China to use the technology of wireless binding? Not always, we can use it selectively. For those seasonal books that are less affected by the climatic environment and printed and distributed in the province, such as teaching materials, teaching aids, journals, etc., under the premise of ensuring the quality of EVA hot melt adhesive and the quality of milling back grinding, you can use wireless binding. Crafts, and such books are large in print and tight in time, and it is difficult to complete the book publishing task without using the wireless binding method. For books issued nationwide, especially those with collection functions, it is recommended to use the traditional "lock line + glue binding" binding method.
The above content is selected from the third issue of “Printing Technology ·Digital Graphic Arts †in 2013. For more journal content, please pay attention to the journal channel. The latest journal content clicks into the electronic journal channel of Keyin.com.
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