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The helmet is mainly composed of an outer shell, a buffer layer, an inner lining layer and other parts. Among them, the buffer layer mainly plays a buffer effect when it encounters strong external impact, avoiding direct impact on the head and playing a protective role. The ideal buffer layer material has a certain degree of hardness (elasticity), and at the same time, from the perspective of economy and comfort, it should also meet the conditions of light weight, low cost, mature manufacturing technology, and easy ventilation. EPS is the most commonly used helmet cushioning material in the world. It is light in weight and has low requirements for use temperature and objective conditions. It can effectively reduce the one-time impact on the wearer's head due to energy transfer caused by impact.
Styrofoam EPS is a packaging material that is often used.When we apply EPS to packaging, there are often contradictions: On the one hand, the use of EPS board as a liner can deliver the goods to the destination well; But on the other hand, if you throw it into the trash after just one delivery, it seems wasteful. Is there a way to recycle and reuse the discarded EPS packaging? Machinery enthusiasts made a"Doomsday Saw Blade"EPS recovery device ① Prepare a box ② Install the 4 saw blades obliquely on the screw and put them in the box; ③ Rotate the electric drill to make it rotate quickly to achieve the purpose of shredding EPS; ④ By installing wire filters and blowers, prevent unshredded EPS from blocking the pipeline.
The "Worm Skyscraper" designed by yong ju lee architects is an environmental protection project that explores the solution of plastic pollution. Expanded polystyrene, also known as "styrofoam", is not biodegradable. This means that single-use polystyrene cups may exist permanently, and therefore cause great harm to the environment. However, what if this synthetic material can be decomposed by humble mealworms? Mealworms are the larval form of beetles, the yellow mealworms. They are used as a high-protein food source for pets, such as reptiles and birds. In 2015, Stanford University researchers discovered that this little bug can safely eat and digest polystyrene! According to this research, yong ju lee architects fed polystyrene foam boards to mealworms and used the remaining parts to create the building blocks of "worm skyscrapers". Incredibly, it seems that co-made materials can really return to nature through the intestines of this tiny creature.
Specific to the downstream manufacturers of plastics, because the downstream order prices of the companies are often not adjustable, or the adjustment speed is relatively slow relative to the fluctuation of the raw material prices, the risk management of the raw material prices is particularly important.
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