PVC floor and production line and preparation method thereof

Abstract

The invention discloses a PVC floor and a production line and a preparation method thereof. The production line comprises a feeding system, a banburying and extruding device, a calendaring and laminating device, a cooling device, a traction machine and a cutting machine which are sequentially arranged in the material conveying direction, and the banburying and extruding device comprises a banburying mechanism, an extruding mechanism and a hopper. According to the production line of the invention, materials are rapidly dispersed and plasticized through a banburying section of the banburying and extruding device, the plasticized materials directly enter an extruding section through the hopper to be extruded and formed, the plasticizing effect is good, the problem that the plasticizing effect is poor due to the fact that a traditional extruder forcibly plasticizes PVC hard products without plasticizers is solved, and the materials are directly extruded after being plasticized without passing through a high-speed mixer, so that the mixing and extruding time of the materials is shortened, the energy consumption is reduced, and the use amounts of a stabilizer, an internal lubricant and an external lubricant in a raw material formula are reduced.

Description

technical field [0001] The invention relates to the technical field of floor manufacturing, in particular to a PVC floor and its production line and preparation method. Background technique [0002] Existing PVC floor production is first stirred with a high-speed mixer to a high temperature of about 120°C during the extrusion stage, and then discharged into the cooling mixer to cool, and the conical twin-screw extruder with good shear force is used for forced plasticization. It wastes a lot of energy. It needs to be heated for about 20-40 minutes, cooled at high temperature, and then discharged into an extruder heated to 190-200°C to be plasticized and extruded into a board. The material is heated to 120-135°C by a high-speed mixer, and then cooled to about 50°C by a cooling mixer. There is a temperature difference of 70-85°C in the middle. This method has high energy consumption, and the mixing time period is long, and the mixing cost is high. . Furthermore, the material ...

AI Technical Summary

Problems solved by technology

[0002] Existing PVC floor production is first stirred with a high-speed mixer to a high temperature of about 120°C during the extrusion stage, and then discharged into the cooling mixer to cool, and the conical twin-screw extruder with good shear force is used for forced plasticization. It wastes a lot of energy. It needs to be heated for about 20-40 minutes, cooled at high temperature, and then discharged into an extruder heated to 190-200°C for plasticization and extruded into boards.

The material is heated to 120-135°C by a high-speed mixer, and then cooled to about 50°C by a cooling mixer. There is a temperature difference of 70-85°C in the middle. This method has high energy consumption, and the mixing time period is long, and the mixing cost is high.

Furthermore, the material is plasticized only by forced shearing and frictional heat generation by the screw of the extruder. For hard PVC products that do not contain plasticizers, the plasticization effect is not good.

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