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Preparing method of PVC composite board

A composite board and auxiliary extrusion technology, which is applied in the field of PVC composite board preparation, can solve the problems that the decorative layer is easy to foam, crack, and affect the appreciation of the PVC composite board, and achieve the effect of good compatibility and quality assurance

Inactive Publication Date: 2017-01-11
佛山市南海森蓝环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After a period of use, the decorative layer is prone to foaming, and the combination of the decorative layer and the middle layer will crack, which will seriously affect the ornamental quality of the PVC composite board.

Method used

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  • Preparing method of PVC composite board
  • Preparing method of PVC composite board

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0024] Such as figure 1 Shown, a kind of preparation method of PVC composite board, described composite board is compounded by co-extrusion process by middle layer and upper and lower two surface layers, middle layer is PVC wood-plastic layer, surface layer is PVC layer, middle layer is through main extruding Extruder 1 is formed, and the two layers of skin are respectively formed by two auxiliary extruders 2.

[0025] According to the weight ratio, the main raw materials used in the middle layer include 90~120 parts of PVC resin, 75~100 parts of calcium carbonate, 10~12 parts of wood powder, 6~8 parts of stabilizer, 1.5~2 parts of lubricant, and 3 parts of plasticizer. ~4 parts and 5~8 parts of blowing agent. In proportion by weight, the auxiliary raw materials used in the surface layer include 90~120 parts of PVC resin powder, 75~100 parts of cal...

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Abstract

The invention discloses a preparing method of a PVC composite board. The composite board is formed by that a middle layer and upper and lower surface layers are composited through a co-extrusion technology, the middle layer is a PVC wood-plastic layer, the surface layers are PVC layers, the middle layer is molded through a main extrusion machine, and the two surface layers are separately molded through two auxiliary extrusion machines. At least two auxiliary raw materials with different colors are placed into the auxiliary extrusion machines, the auxiliary raw materials are heated to a gelatine state by cylinders of the auxiliary extrusion machines, the auxiliary raw materials are mixed by screw rods of the auxiliary extrusion machines and conveyed into an auxiliary runner of a distributor at the rear end, the inlet end of the auxiliary runner is connected with the extrusion ends of the auxiliary extrusion machines, and the extrusion ends communicate with a main runner. The auxiliary raw materials comprise PVC resin powder, calcium carbonate, color filler and a coloring agent, and the melting points of the PVC resin powder of the auxiliary raw materials with different colors are different. The screw rods of the auxiliary extrusion machines are single screw rods. The PVC composite board is not prone to cracking and is resistant to wear.

Description

technical field [0001] The invention relates to a PVC composite board, in particular to a preparation method of a PVC composite board. Background technique [0002] PVC composite panels can be used for building templates and interior decorative panels. For decorative panels, PVC composite panels generally include a middle layer and two decorative layers on the surface. The material of the middle layer is wood-plastic, and the structure of the decorative layer includes a carrier layer and pattern stickers. By changing the stickers, the decorative patterns and patterns can be changed, such as imitation wood grain and marble grain, etc., to increase the ornamental value of the decorative board. In the existing process of manufacturing PVC composite boards, an extruder is used to form the middle layer first, and then a decorative layer is pasted on the surface of the middle layer. The combination of the decorative layer and the middle layer can be through glue or thermal printin...

Claims

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Application Information

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IPC IPC(8): B29C47/04B29C47/06C08L27/06C08L97/02C08K13/02C08K3/26
CPCB29C48/175B29C48/21C08L27/06C08L97/02C08K13/02C08K2003/265
Inventor 梁伯行
Owner 佛山市南海森蓝环保科技有限公司
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