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

A production process and arc angle technology, which can be used in buildings, building structures, floors, etc., can solve the problems of only two years, the change of internal stress cannot be eliminated, the floor is easy to warp, etc., to improve wear resistance, use Long life and good comfort

Active Publication Date: 2013-07-31
HUIZHOU WEIKANG NEW BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A production process for arc-angle sheet PVC flooring, as follows:

[0048] Step 1: Preparation of PVC wear-resistant layer, printed pattern layer, middle material layer and bottom material layer

[0049] 1. The preparation method of the middle material layer is:

[0050] (1) Mix the raw materials, that is, put 35 parts of polyvinyl chloride powder (that is, PVC powder), 18 parts of diisononyl phthalate, and 3 parts of zinc stearate into a high-speed mixer and stir for 4 minutes to obtain a mixed powder ;

[0051] (2) Internal mixing with internal mixer, that is, the mixed powder, 42 parts of calcium carbonate, 1 part of rosin, and 1 part of carbon black are sequentially put into the internal mixer for internal mixing, using the high temperature and high pressure functions of the internal mixer for internal mixing, so The raw materials are kneaded for 3 minutes and the temperature reaches 150°C, and then they are unloaded for the next production process;

[0052] (3)...

Embodiment 2

[0070] In this embodiment, the thickness of the PVC wear-resistant layer reaches 1.0mm, and the upper edge of the four sides of the PVC wear-resistant layer is guided and milled to have an outwardly convex arc angle of R0.9 (that is, the radius of the circle where the arc angle is located is 0.9mm).

[0071] The preparation method of material layer and bottom material layer in the present embodiment is identical with embodiment 1, and the content of calcium carbonate is 38% in the middle material layer, and the content of calcium carbonate in the bottom material layer is 32%.

[0072] In this embodiment, the PVC wear-resistant layer and the printed pattern layer are self-manufactured, and the manufacturing method belongs to the prior art in the industry, and will not be described in detail here.

[0073] In this embodiment, the arc angle cutter used for lathe guide milling has an arc angle of R0.9 (that is, the radius of the circle where the arc angle is located is 0.9 mm).

...

Embodiment 3

[0076] In this embodiment, the thickness of the PVC wear-resistant layer reaches 1.5mm, and the upper edge of the four sides of the PVC wear-resistant layer is guided and milled to have an outwardly convex arc angle of R1.4 (that is, the radius of the circle where the arc angle is located is 1.4mm). Others are the same as in Example 1.

[0077] In this embodiment, since the thickness of the wear-resistant layer reaches 1.5mm, and its upper edge has a guide milling arc angle, this embodiment not only has excellent wear resistance, but also the arc angle of the wear-resistant layer can be permanently maintained, so the product's Longer service life.

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04F15/02E04F15/10B29C43/24C08L27/06C08L93/04C08K13/02C08K5/12C08K5/098C08K3/26C08K3/04
Inventor 李远杨
Owner HUIZHOU WEIKANG NEW BUILDING MATERIALS CO LTD
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