Summary:At present, in the Chinese market, the recycling price of ol...
At present, in the Chinese market, the recycling price of old foam products is more than 2 yuan per kilogram, and the good quality can reach 6 yuan/kg, and it is in short supply. Recovered foam can be used to make pellets, sound insulation panels, energy-saving bricks, refining gasoline, etc. In short, it is promising, so now in the street, it is hard to find white foam garbage.
Compared with pulp, core foam
is more environmentally friendly. On the surface, foam is not biodegradable, pulp packaging is biodegradable, it should be more environmentally friendly pulp packaging. The fact is just the opposite, which is a beautiful lie woven by developed countries. As the world's factories to developing countries, so the packaging is mostly produced in developing countries. And the developed countries in the enjoyment of product services, of course, require an environmentally friendly by-product - packaging. But did you know that the production of pulp requires green plants, and China is a water-scarce and arid country where vegetation is precious.
Scientific experiments have proven that the vegetation and water consumed to produce one ton of pulp is far greater than the environmental impact of producing one ton of foam. And the production process of pulp also pollutes water seriously. So it is said that developed countries are environmentally friendly to themselves and harm others. General foam board has a tight closed-cell structure, polystyrene molecular structure due to its own non-absorbent properties, so often use foam board as insulation materials. While acting as a foam board, a lower thermal conductivity needs to be pursued to ensure its thermal insulation performance.
The lowest possible thermal conductivity is the goal pursued by all insulation materials. Extruded panels are mainly made of polystyrene, which is originally an excellent low thermal conductivity raw material, and then supplemented by extruded extrusion, the tight honeycomb structure is more effective in preventing heat transfer, the thermal conductivity of polyethylene panels is 0.028/m. k, with high thermal resistance, low linear expansion rate characteristics. Thermal conductivity is much lower than other insulation materials. Such as EPS board, foamed polyurethane, insulation mortar, perlite, etc.
If you use the general rigid foam insulation materials, a few years later, it is easy to aging, the use of performance will gradually decline, and the use of foam board can effectively avoid this situation, as long as the proper maintenance, you can extend the service life, long-lasting work effect.