Importance

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Abstract

A polyvinyl chloride (PVC) flooring, and a production line and a preparation method thereof are provided. The production line includes a loading system, an internal-mixing extrusion device, a calendering lamination device, a cooling device, a tractor, and a cutter that are arranged sequentially along a material conveying direction, where the internal-mixing extrusion device includes an internal mixing mechanism, an extrusion mechanism, and a hopper. In an internal mixing stage of the internal-mixing extrusion device, materials are quickly dispersed and plasticized, and plasticized materials directly enter an extruding stage through the hopper for extrusion molding. The production line achieves a desirable plasticization effect, and prevents the problem that a PVC hard product without a plasticizer is forcibly plasticized by a conventional extruder to cause a poor plasticization effect. Without passing through a high-speed mixer, the plasticized materials are directly extruded.

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First Claim