(1) Different proportioning method: When the recycled plastics are different in composition and mixed with each other, and there is no proportional relationship between the types, they can be separated according to different densities.
The process of this method is to crush the waste plastic, wash it, and dehydrate it, and then feed it into the water tank and the heavy medium liquid tank (adjust the density to 1.1g / cm3 with sodium silicate) for density sorting. After dehydration and drying, they are sent to their respective storage tanks. If you need to manufacture a certain product, take it out from the storage tank separately, mix it in a certain proportion, and then send it to the extruder for mixing and forming.
Plates or pipes made of recycled waste plastics are not as strong as the strength of new raw materials. However, if you use recycled products such as flower pots, you can meet the requirements for use.
(2) Heat carrier method: The process of this method is to mix the heat carrier to 350-4000C and mix with the waste plastic at room temperature (the latter ratio is 40% to 60%), and mix it with a paddle mixer for 5 to 10 minutes at 2000C. After melting, molding.
The finished product has a similar appearance to concrete products and has the same tensile strength, but has a slightly lower compressive strength and a higher bending strength, and the density is 1.3 to 1.7 g / cm 3 . Suitable for fishing reefs.
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