Sheeted polyvinyl chloride (PVC) flooring with arc angles, production process for same and special die

Abstract

The invention relates to a sheeted polyvinyl chloride (PVC) flooring, a production process for the same and a special die. In the sheeted PVC flooring with arc angles, the thickness of a PVC wear-resistant layer is 0.55 to 1.5mm; and the calcium carbonate content of a middle material layer and a bottom material layer is 30 to 60 percent of the total calcium carbonate content of the whole finishedproduct. The production process for the sheeted PVC flooring with the arc angles sequentially comprises the preparation of materials of each layer, the hot embossing of an oil press, the tempering ofa tempering furnace, the punch forming of a punch, the mechanical guide milling of a lathe and surface poly urethane (PU) treatment. An arc angle cutting tool for the mechanical guide milling of the lathe comprises a tool holder fixed on the angle guide lathe. Convex edges are formed at the front end of the tool holder. Inwards-sunken arc angle cutters are arranged at the front ends of the convexedges. The number of the convex edges is 4, and the convex edges are uniformly distributed on the outer wall of the front end of the tool holder. Arcs with the arc angle cutters are inwards-raised arc angles of R0.55 to R1.5. The sheeted PVC flooring comprises the wear-resistant layer with higher wear resistance, and has the permanently fixed arc angles and service life capable of reaching 20 years.

Description

technical field [0001] The invention relates to a curved-angle sheet PVC floor, and also relates to a production process and a special mold for the curved-angle sheet PVC floor. Background technique [0002] At present, PVC flooring is widely used for decoration. "PVC floor" refers to the floor made of polyvinyl chloride material. Specifically, polyvinyl chloride and its copolymer resin are used as the main raw material, and fillers, plasticizers, stabilizers, colorants and other auxiliary materials are added. Produced by compression molding process. Compared with other floor materials, PVC floor has many advantages, such as simple construction, wear resistance, long service life, no welding seams, beautiful, elastic, good anti-skid, safe and environmentally friendly without formaldehyde, sound insulation and noise reduction, comfortable feet, colorful Diversified, comfortable patterns, can show stone, metal, abstract and other pattern images, light weight, reduce the load...

AI Technical Summary

Problems solved by technology

[0003]The sheet PVC flooring on the market is mostly flat structure, and the corners have not been specially treated. After the PVC floor is laid, the floor is very easy to warp, and the floor has a height difference, which affects the life of the floor and the aesthetic sense

[0004] Chinese utility model patents 201020000004.7 and 200920008240.0 disclose two stamping molds for stone-plastic flooring. The corners of the floor are pressed out of the arc angle by stamping. The arc-corner floor has the following disadvantages: (1) The arc of the corner of the floor is formed by stamping, which is a rounded corner of a certain radian formed after the product is subjected to high pressure. When the product is deformed by external pressure, the change of internal stress cannot be eliminated. After a period of time, there will be a problem of reduced arc rebound; (2) Since the wear-resistant layer (PVC layer) has a certain hardness, the above two stamping dies that can produce arc angles on the edge of the PVC floor can only stamp the wear-resistant layer with a thickness of 0.30mm The PVC floor within 0.30mm, and the wear-resistant layer thickness of 0.30mm is based on the European EN685 elastic floor product classification standard. It cannot be used in commercial and industrial places. It can only be used as a low-grade PVC floor for home floor materials. This stone The life of the plastic floor is generally only two years

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