EB-cured polypropylene film facing multilayer composite floor and production process

Abstract

The invention belongs to the technical field of ground paving materials and relates to an EB-cured polypropylene film facing multilayer composite floor. The floor comprises a floor substrate body anda surface layer attached to the floor substrate body, wherein the substrate body is a multilayer substrate, the thickness of the substrate body is 11.7-14.7 mm, the surface layer is formed by stickingan EB-cured polypropylene film to a polyurethane resin adhesive layer, the thickness of the surface layer is 0.22-0.32 mm, and wood texture of the surface layer of the substrate is parallel to the length direction of the EB-cured polypropylene film. The thickness of the EB-cured polypropylene film is about 0.22-0.32 mm; the thickness of the polyurethane resin adhesive layer is 0.1-0.2mm; the surface layer of the substrate is made of a beech tree or a birch tree and the other tree species with the thickness of greater than or equal to 0.8 mm. The invention also discloses a production process of the floor, and the production process alleviates the current deficiency of wood resources and reserves natural texture characteristics of wood. By using polyurethane resin, the EB film and the multilayer substrate are fitted and pressed at one time, and the surface of the floor does not need to be coated with ultraviolet curing UV paint. The floor has the advantages of being simple in productionprocess, small in environmental pollution, low in cost and high in comprehensive value.

Description

technical field [0001] The invention belongs to the technical field of ground pavement materials, and relates to a solid wood composite floor, in particular to an EB-cured polypropylene film facing multilayer composite floor and a production process thereof. Background technique [0002] Multi-layer solid wood composite flooring uses natural precious tree veneers (veneers) of different thicknesses as the surface layer, and plywood made of solid wood veneers with criss-cross textures as the base material, coated with high-performance, high wear-resistant, and high-environmental ultraviolet light It is made by curing special paint for floors, and is widely used in the home building materials industry. However, with the shortage of forest resources, the resource limitation of solid wood composite flooring increases, especially the hard broad-leaved tree species selected from decades or even hundreds of years, and the available resources decrease rapidly. Raw material prices co...

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Problems solved by technology

However, there are still some problems in this patent, such as: the annual ring pattern is obvious, it is easy to produce sanding marks or wood burrs to affect the surface effect; the surface is covered with a layer of UV paint, although part of the lower layer can be covered, but due to the substrate and sanding problems Surface indentation, bulging and other phenomena still exist, and increase the cost of finished flooring to a certain extent; polyvinyl alcohol glue used for bonding has slightly poor elasticity and bonding strength, and low water resistance, etc.

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