Nowadays, the use of PVC foam board is becoming more and more widespread, and the waste is gradually increasing. In order to protect the environment, there are various recycling measures to deal with the problem what also can bring benefits.
The main ways of PVC foam board recycling
1. Reduced capacity after granulation. It can be melt extrusion granulation into recycled pellets. However, it is too large and inconvenient to transport, so it is usually necessary to reduce the volume first when recycling. Methods include mechanical method, solvent method and heating method.
2. Crushed and used as filler to make various products.
Such as ① Re-molded into foam products
② Concrete composite board products
③ Gypsum sandwich brick
④ Used as asphalt reinforcement
⑤ Used as soil modifier
1. Cracking oil
The method is as follows.
Waste polystyrene foam - pretreatment - heat treatment capacity reduction - catalytic cracking - distillation --Styrene
4. Used in the manufacture of paints and adhesives
① Paint. Crushed and added to the appropriate solvent can be made into lacquer.
② Adhesive. Can be made for cement, steel, wood coatings.
The benefits of PVC foam board
1. Economic benefits
The recycled waste foam, after strong extrusion and high temperature hot melt, every 90 cubic meters of waste foam is "concentrated" into 1 ton of recycled foam. At the same time, the "price" of waste foam has also completed the metamorphosis. It can be sold to the downstream disposal enterprises at a price of $5,000 to $6,000/ton. Waste foam is not only "price". When the waste foam is transformed into various exquisite photo frames, mirror frames, and various "marble" and "solid wood" decorative lines, its value can also be doubled.
2. Environmental benefits
The amount of recycling can reduce the number of trees cut down by 2 million per year.
Post time: Oct-25-2022