CFine open mixer is an open plastic material intermittent mixing equipment with adjustable roller gaps composed of two parallel arranged rollers. Its main function is to mix and plasticize the uniformly mixed raw materials, providing a uniformly mixed and plasticized molten material for the rolling machine. During the rubber refining process, the open mill mainly relies on the squeezing and shearing effects of two relatively rotating drums on the rubber material. After multiple kneading and mixing processes, chemical reactions will also occur during the mixing process, breaking the large molecular chains inside the rubber and plastic, and mixing and dispersing various components inside the rubber material evenly, ultimately achieving the purpose of rubber refining.