Smashing of waste plastic recycling
The shape of waste plastics is complex and varies in size. Especially for some large-volume waste products, they must be crushed, ground or sheared to break them into pieces or small pieces of certain size before they can be recycled. Further film molding is made into various recycled products. For some production wastes with little pollution, such as waste edges, waste materials and waste products from injection molding and extrusion processing plants, they can be directly reused after being crushed.
The so-called pulverization refers to the process of material size reduction. Various types of crushing machines are usually used to apply different mechanical forces to the materials, such as tensile force, pressing force, impact force and shearing force. The basic form is as follows:
1, crushed
The material is pulverized into small pieces by the relative compressive force. It is suitable for bulky waste plastic products and is not suitable for soft plastics. Its mode of action is:
(1) Two relatively moving metal plates are pressed against each other.
(2) Rolling action of two relative rotating sticks.
(3) The inner cone is eccentrically rotated in the outer cone.
2, crush
The material is crushed by an external impact force and is suitable for brittle materials. Its mode of action is:
(1) The striking effect of a foreign hard object, such as hammering with a hammer.
(2) High-speed impact between materials themselves and fixed hard steel plates.
(3) The impact of materials on each other.
3, grated
The material is crushed into fine particles by being crushed between abrasive bodies of different shapes, which is suitable for bulk materials.
4, cut
The material is pulverized into small pieces or pieces under the action of shearing, puncture, tearing, etc., which are suitable for tough materials, films, sheets and soft products.
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