A processing method of a solid wood profile with a pvc co-extruded coating and an extrusion die thereof

Abstract

The invention relates to the technical field of solid wood sectional bars, and particularly discloses a machining method for a solid wood sectional bar with a PVC co-extrusion wrapping layer and an extrusion die for achieving the machining method. The method comprises the steps that PVC resin extrudate and to-be-machined solid wood sectional bar feed are placed in the extrusion die, a to-be-machined solid wood sectional bar sequentially penetrates a heat machining forming area and a cooling forming area of the extrusion die and then enters a sizing die to be secondarily cooled and formed, and then the to-be-machined solid wood sectional bar is guided into a water trough to be cooled, wherein the heating temperature of the heat machining forming area ranges from 150 DEG C to 180 DEG C, the cooling temperature of the cooling forming area ranges from 90 DEG C to 100 DEG C, the cooling temperature of secondary cooling forming ranges from 60 DEG C to 80 DEG C, and the cooling temperature in the water trough ranges from 0 DEG C to 5 DEG C. The PVC wrapping layer and the solid wood sectional bar are combined closely through the extrusion die adopted in the method, the wrapping layer is flat and smooth, the waterproof performance, the corrosion resisting performance, the mechanical performance and other performance of the solid wood sectional bar are enhanced, and the service life of the solid wood sectional bar is prolonged.

Description

technical field [0001] The invention relates to the technical field of solid wood profiles, in particular to a processing method for a solid wood profile with a PVC co-extruded coating layer and an extrusion die. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for the quality of furniture, doors and windows. Solid wood doors, windows and furniture are more and more sought after by people due to their high-end quality. However, solid wood materials come from natural wood, natural wood The density of wood is uneven during the growth process, accompanied by climate changes during use, and some poor-quality sealing paints cannot effectively prevent air from entering the wood fibers, resulting in wood in a high-humidity environment, or with the use of time The extension of the wood absorbs moisture in the air, resulting in changes in internal and external stress, resulting in cracking and deformation. [0003] Th...

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Problems solved by technology

[0002] With the improvement of living standards, people have higher and higher requirements for the quality of furniture, doors and windows. Solid wood doors, windows and furniture are more and more sought after by people due to their high-end quality. However, solid wood materials come from natural wood, natural wood The density of wood is uneven during the growth process, accompanied by climate changes during use, and some poor-quality sealing paints cannot effectively prevent air from entering the wood fibers, resulting in wood in a high-humidity environment, or with the use of time The extension of the wood absorbs moisture in the air, resulting in changes in internal and external stress, resulting in cracking and deformation

[0003] Therefore, in view of the current research reports that the PVC layer is coated on the surface of wood-plastic profiles, from the enhancement of the strength and service life of wood-plastic materials, it is also possible to solve the problem of easy deformation and cracking of solid wood materials by coating PVC layers on the surface of solid wood profiles. Problem, however, the wood-plastic material surface coating PVC layer currently realized is the method of co-extruding wood-plastic material and PVC resin, such as the molding method of wood-plastic profile with PVC coating and its extrusion die disclosed in Chinese patent CN102962973A , but the solid wood material is a formed natural material and cannot be co-extruded with PVC resin like wood-plastic materials. Therefore, in order to achieve a PVC layer on the surface of the solid wood material, special extrusion molding molds and processing methods are required.

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