Stone Paper: A concept game related to calcium carbonate
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Stone paper once became a hot spot and focus of the calcium carbonate industry and the paper industry. Lianzhong calcium carbonate network has reviewed relevant information on the Internet and talked about its views here.
It is understood that most of the raw material of this so-called "stone paper" is ultra-fine powder calcium carbonate, and now a large amount of fine powder calcium carbonate is added in corrugated paper production. "Stone paper" is to grind calcium carbonate powder into nanometer calcium carbonate, and then mix it into polymer resin, such as polypropylene or polyethylene, and heat it together to melt the polymer resin; ultrafine powder calcium carbonate is evenly mixed together. Then, by casting or blowing a film to produce a calcium plastic film, the so-called "stone paper" is created.
Stone paper
If you don't have a concept about stone paper, let's talk about a wood-plastic product that everyone may have seen, that is, wood-plastic mixed with wood chips and polypropylene. This thing is mainly used in landscapes, park wood-plastic floor bridges, wood-plastic chairs, wood-plastic pots and other products. This wood-plastic product is not afraid of rain, eroding wood, and is not afraid of insects. It has the grain and beauty of wood, as well as the hardness and weather resistance of plastic. It can be extruded into any size and shape by plastic machine. If the amount of calcium carbonate added is relatively small, plastic modification, such as: reinforced nylon, reinforced PP, enhanced POM, enhanced ABS, etc. will basically add nano-scale ultra-fine powder calcium carbonate.
Therefore, this so-called "stone paper" is actually a mixture of ultrafine powder nano-scale calcium carbonate and polymer resin melt blown products. This paper is waterproof, anti-corrosive, anti-insect, non-flammable, in fact, he is not environmentally friendly. The polymer resin used in it is all refined from petroleum and is a non-renewable energy source. This paper will not degrade. He will produce white garbage like plastic bags.