The first simple distinction method: It is the unified […]
The first simple distinction method: It is the unified method of our country and the world, which is the common plastic recycling mark. When polyethylene PE is not colored, it is milky white translucent and waxy; the product has a slippery feel when touched by hand, flexible and tough; slightly stretchable.
Generally, low-density polyethylene is softer and has better transparency; high-density polyethylene is harder. Plastic film, handbag, water pipe, oil drum, beverage bottle (calcium milk bottle), daily necessities, etc. Polypropylene PP is white, translucent and waxy when uncolored; it is lighter than polyethylene. Transparency is also better than polyethylene and harder than polyethylene. Basins, barrels, furniture, films, woven bags, bottle caps, car bumpers, etc. Polystyrene PS is transparent when uncolored.
When the product falls or knocks, it has a metal-like crisp sound, good gloss and transparency, similar to glass, brittle and easy to break, and you can mark the surface of the product with your fingernail. Modified polystyrene is opaque. Stationery, cups, food containers, home appliance housings, electrical accessories, etc. Polyvinyl chloride PVC is yellowish translucent in nature and shiny. Transparency is better than polyethylene and polystyrene, but worse than polystyrene. Depending on the amount of additives, it can be divided into soft and hard polyvinyl chloride. Soft products are flexible and tough, and feel sticky.
The hardness of hard products is higher than that of low-density polyethylene. , And lower than polypropylene, whitening will occur at the inflection. There are too many plastic products in our daily process that can be recycled. For newcomers to the recycled plastics industry, knowledge of materials is the basic and most important thing. The five major plastic products are the most common and there are many ways to distinguish them. They can be distinguished according to their uses, raw materials, and density.More about:plastic folding wash basin