Hot Melt Adhesive For Book Spine Book glue is mainly divided into back glue and side glue, the back glue is mainly milky white, and the side glue is mainly white transparent or light yellow transparent. Hot Melt Adhesive For Book Spine,Books Binding Hot Melt Glue,Books Binding Spine Glue,Books Binding Spine Adhesive Shenzhen Tongde New Materials Technology Co., Ltd. , https://www.tdhotmeltglue.com
With the severe invasion of haze days, the society must pay attention to the strategic viewpoints of energy conservation, emission reduction, sustainable development, environmental protection, and conservation-oriented society in today's society. In addition, energy shortages have attracted worldwide attention, and the traditional concept believes that the vacuum drying equipment has high energy consumption because it requires a vacuum pump. However, there was no real comparison of energy consumption when the same material was dried to the same moisture content. In fact, vacuum drying is drying at a low temperature in an enclosed space, and energy waste is relatively small.
Despite this, the energy saving of vacuum drying equipment is still the key to development. Compared with other types of drying equipment, the energy saving of vacuum drying equipment should focus on the rational design, selection and use of vacuum systems.
There are not many vacuum systems capable of pumping steam. At present, there are two main categories. One is a pump capable of directly pumping water vapor. The main ones are water jet pumps, steam jet pumps, water ring pumps, and wet roots pumps; It is using condensation to catch water. Both of these methods consume relatively high energy. The direction of the former type of energy saving should be to increase the pumping efficiency of the pump; the latter type of energy saving should be directed to the design of the structure and thermal efficiency of the gas-solid phase changer.
Continuous vacuum drying equipment is an important way to increase product output and save energy. The continuous vacuum drying equipment has less auxiliary time than the periodic vacuum drying equipment, which saves time and increases the output. At the same time, he does not need to change the temperature of the equipment every time it produces a cycle like the periodic vacuum drying equipment, which causes part of the energy to be wasted on the repeated heating of the equipment components. Therefore, energy is saved.
Industry insiders pointed out that domestic companies have accelerated the study of vacuum drying technology, which has reduced energy consumption to a certain extent, reduced pollution, brought more benefits and value to society, and made due contribution to the realization of green production and low-carbon production. contribution. At this stage, however, the vacuum dryer revolution in China has not yet been successful. Vacuum drying equipment manufacturers generally have low innovation capabilities. Poor enterprises that can introduce new technologies and new products with independent intellectual property rights have resulted in slow development of drying technologies. Knowledge achievements have not been effectively translated into actual productivity. At present, the R&D and innovation of technologies in the field of drying equipment mainly rely on universities and research institutes. Due to the disconnection of companies, it is difficult to effectively turn knowledge achievements into productivity.
It can be seen that in this regard, China's relevant enterprises should carry out comprehensive, multi-level energy-saving technological transformation, vigorously develop the application of renewable energy and industrial waste heat drying technology, and comprehensively promote China's vacuum drying technology reform and application.
Xiao Bian believes that the trend toward the development of energy-saving vacuum dryers is a topic worthy of study by many manufacturers. If energy-saving products can be better used, sales of products will become a trend of increase, and users can also Which gets higher profits, so that energy-saving development will be the dryer industry's innovation.
Company book glue properties.
In order to ensure the binding speed of books, different types of hot melt adhesives should be selected according to different machine speeds. Hot melt adhesives are divided into three types according to the binding speed: low speed binding hot melt adhesives (about 3600 copies/hour), medium speed binding hot melt adhesives (about 8000 copies/hour) and high speed binding hot melt adhesives (about 10000 copies/hour). The opening time and curing time of hot melt adhesive are closely related to the speed of binding. The opening time refers to the time between the hot melt adhesive and the other adhesive after the hot melt adhesive is applied to one adhesive. The opening time indicates that the two bonded objects must be bonded within the specified time, so as to ensure the bond strength. The opening time of the low-speed machine is 15 to 20 seconds, the medium-speed machine is 5 to 10 seconds, and the high-speed machine is 2 to 7 seconds. The curing time of hot melt adhesive refers to that after the cover and book block are bonded within the specified time, they can be turned and pressurized after a certain period of cooling, which is called the curing time. If the hot melt glue has not been cured, shaped and turned or cut, the back of the book will be deformed, and the hot melt glue will stick to the blade during cutting, affecting the quality of the product. When used, it should be reasonably selected according to the length of the conveyor belt, transmission speed, seasonal changes, etc. The curing time of hot melt adhesive is generally 3 to 5 minutes. 2) According to paper classification can be divided into coated paper and general paper with hot melt adhesive. The use of different types of paper, to choose the corresponding hot melt adhesive, because the paper surface finish, permeability, thermal conductivity is different. 3) According to the use of binding is classified into side glue and back glue. The hot melt adhesive used as side adhesive has good fluidity, low viscosity, long opening time and curing time, and high bonding strength. Book side glue requirements to achieve thin and uniform, bond firmly, in order to ensure the quality of the book and cutting requirements. You can't use two kinds of glue wrong. 4) According to the color of the glue classification In addition, if it is the same grade of product, yellow glue is better than white glue (but the manual generally requires the glue to be white). 302 series glue can meet the viscosity, hardness and color.
In today's society, “green environmental protection†and “energy saving and consumption reduction†have become global topics and have been listed by consumers as an important consideration in selecting products. For this reason, many companies have taken the lead in the development of green machinery products. Vacuum drying Equipment is favored by customers because of its "green equipment."
August 07, 2024