The ideal shape of daily-use glass products should be a uniform thickness of the bottle wall, giving people a sense of symmetry (of course, in order to ensure the product's center of gravity, the bottom of the product is made thicker to maintain a stable exception), but it is also very difficult to do so. Therefore, although some companies have achieved certain achievements through long-term research, most companies lack innovative ideas and are still producing at low levels according to traditional techniques. At the same time, people also have a misunderstanding in understanding. The first is that the heavier the bottle is, the better, but actually the weight of the bottle itself is also increasing. At the same time, the impact weight of the bottle itself is also increased, while the composite glass Bottles complement each other in material applications, increasing the strength of the bottle and increasing the impact strength. Second, due to limitations in the investment of some companies, they can only purchase low-end equipment, and their efforts in the quality of operators, training, etc. are not enough, and it is difficult to make breakthroughs in the technological level. The lightweighting of glass bottles is a systematic project. It has both hardware and equipment enhancements as well as software development in personnel quality and training. This is the bottleneck of the lightweight glass products. Now the hardware is discussed: First of all, due to the mechanical forming process can not completely imitate people's difficult movements in the hot forming process, especially the current type of bottle-making machine is widely used in China is a flip-type molding process, in the initial mode Due to the excessive movement during the turning of the forming mold, a certain inertia is formed, so that the interface between the hollow part of the preliminary material and the bottom material is stretched, which is what we call the two-joint phenomenon. The interface between the two joints is the thinnest place in the entire bottle, and due to the uneven temperature of the forming mold, the uneven temperature of the gob, the irregular shape of the material, and the improper design of the preliminary mold, etc. Uniform. The process of lightweighting is to subtract (thickness) the thick material in the non-uniform part of the glass product. The overall thickness of the bottle is both beautiful and maintains its strength. Of course, in order to maintain the strength of the bottle, people coat the outside of the bottle with a layer of composite protective layer (inner layer is inorganic binding layer, such as tin dioxide; outside is organic layer, such as Polyethylene). Incidentally, in the current field of scientific and technological development, the advantages of applied materials complement each other, and the disciplines for the development of composite materials are emerging. Let's take the beer bottle as an example: At present, the 640-ml beer bottle we produce weighs about 530 grams. If the bottle-weight ratio is 0.7 and the bottle weight is 448 grams or less, then 309 glasses per ton of glass will equate to the current weight. Bottles produce 16% more. This is not a small figure. We increased the output and output value by 16% without increasing the input, and produced 16% more products under the same energy consumption, which did not save energy accordingly. Yet? Therefore, lighter weight not only improves quality and reduces costs, but also saves energy and reduces energy consumption per unit of production value. Of course, we still misunderstand the problem of bottle weight. We think that the heavier the bottle is, the better it has been. This has been debated in our country for nearly two decades. In fact, I think that the quality of the evaluation bottle should be based on the standard. The standard of pressure resistance and impact strength specified in the standard shall prevail. I believe that this goal should be achieved with the efforts of all colleagues in the glass industry.
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