How to choose and buy plastic crusher model? Plastic crusher is divided into 4 types of knife: 1. The utility model is suitable for crushing and reusing various plastics, especially for all kinds of rigid plastics such as material head and shoe last. 2. Blade Blade suitable for crushing ordinary sheet, pipe, profile, plate and packaging materials, such as plastic products, water gap materials; 3. The flat knife is suitable for the recycling of plastics such as boxes, thin pipe fittings, blow molding parts, bottles and shells. 4. Film knife: Plastic Film, Polyester Film, functional film, packaging film, film panel, packaging tape, 2, choose the size of the machine 1) according to the size of the crushed products, general nozzle, bad products can enter the crushing chamber, if it is a thicker product or plastic head, preferably with a high horsepower level or two models, crush up more easily; 2) look at the size of the comminution chamber, the size of the broken products or nozzle can not be greater than the size of the comminution chamber; 3) production requirements, plastic crusher output depending on the type of different.