Recently, the stone paper has become a hot spot and focus of the calcium carbonate industry and the paper industry. Lianzhong calcium carbonate network has access to relevant information on the Internet, here to talk about their own views.
It is understood that most of the raw material for this so-called "stone paper" is ultrafine calcium carbonate. Nowadays, a large amount of fine calcium carbonate is also added to the production of corrugated paper. "Ribbon 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 together to melt the polymer resin; ultrafine powder calcium carbonate is evenly mixed together. , And then by casting or blown film to produce calcium plastic film, resulting in the so-called "stone paper."
If everyone does not have a concept for stone paper, here's a wood-plastic product that everyone may have seen, that is wood-plastic made from the mixture of sawdust and polypropylene. This thing is mainly used in the landscape is not transparent, park wood-plastic flooring bridge, wood-plastic chairs, wood-plastic flower pots and other products. This wood-plastic product is not afraid of the rain erosion of wood, not afraid of insects and other advantages, there are lines and the appearance of wood, but also the hardness of plastic and weather resistance, can be extruded through a plastic machine of any size and shape. If the calcium carbonate is added in a relatively small amount, plastic modification, such as: reinforced nylon, reinforced PP, reinforced POM, reinforced ABS, etc. will basically be added nano-scale ultrafine calcium carbonate.
Therefore, this so-called "stone paper" is in fact the product of ultra-powder nano-scale calcium carbonate and polymer resin mixed melt blowing. This paper is waterproof, antiseptic, mothproof and non-flammable. In fact, he is not environmentally friendly. The polymer resin used inside is all extracted from petroleum and is a non-renewable energy source. The paper will not be degraded. He will produce white garbage like a plastic bag.
In this project, ultrafine nano-scale calcium carbonate for papermaking has reached more than 6,250 mesh, and the current market price is about 2,500 yuan/ton. Maybe the mass production may be cheaper and some can be 2,000 yuan/ton, the price of polypropylene or polyethylene is about 10,000 yuan/ton, if calcium carbonate accounts for 70%, polypropylene or polyethylene takes up 30%, so called "stone paper" raw material The cost is about 4,400 yuan/ton. If we add production and processing costs and human resource costs (need to consume large amounts of electric energy), it is estimated that at least 1200 yuan/ton will be required. The so-called “stone paper†ex-factory price is about 5,600 yuan/ton. There is no advantage in such high-cost stone paper. Stone paper is nothing more than a concept. It is not so mysterious and it is not a high technology. We must not scare high technology.
It is understood that most of the raw material for this so-called "stone paper" is ultrafine calcium carbonate. Nowadays, a large amount of fine calcium carbonate is also added to the production of corrugated paper. "Ribbon 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 together to melt the polymer resin; ultrafine powder calcium carbonate is evenly mixed together. , And then by casting or blown film to produce calcium plastic film, resulting in the so-called "stone paper."
If everyone does not have a concept for stone paper, here's a wood-plastic product that everyone may have seen, that is wood-plastic made from the mixture of sawdust and polypropylene. This thing is mainly used in the landscape is not transparent, park wood-plastic flooring bridge, wood-plastic chairs, wood-plastic flower pots and other products. This wood-plastic product is not afraid of the rain erosion of wood, not afraid of insects and other advantages, there are lines and the appearance of wood, but also the hardness of plastic and weather resistance, can be extruded through a plastic machine of any size and shape. If the calcium carbonate is added in a relatively small amount, plastic modification, such as: reinforced nylon, reinforced PP, reinforced POM, reinforced ABS, etc. will basically be added nano-scale ultrafine calcium carbonate.
Therefore, this so-called "stone paper" is in fact the product of ultra-powder nano-scale calcium carbonate and polymer resin mixed melt blowing. This paper is waterproof, antiseptic, mothproof and non-flammable. In fact, he is not environmentally friendly. The polymer resin used inside is all extracted from petroleum and is a non-renewable energy source. The paper will not be degraded. He will produce white garbage like a plastic bag.
In this project, ultrafine nano-scale calcium carbonate for papermaking has reached more than 6,250 mesh, and the current market price is about 2,500 yuan/ton. Maybe the mass production may be cheaper and some can be 2,000 yuan/ton, the price of polypropylene or polyethylene is about 10,000 yuan/ton, if calcium carbonate accounts for 70%, polypropylene or polyethylene takes up 30%, so called "stone paper" raw material The cost is about 4,400 yuan/ton. If we add production and processing costs and human resource costs (need to consume large amounts of electric energy), it is estimated that at least 1200 yuan/ton will be required. The so-called “stone paper†ex-factory price is about 5,600 yuan/ton. There is no advantage in such high-cost stone paper. Stone paper is nothing more than a concept. It is not so mysterious and it is not a high technology. We must not scare high technology.
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