New Technology for Double-layer PE Co-extruded Wood Boards

Because double-layer PE co-extruded wood boards are more beautiful than ordinary plastic boards and have better waterproof and moisture-proof properties, double-layer PE co-extruded wood boards are often used on outdoor platforms such as garden landscape villas.However, the double-layer PE co-extruded wood boards used by people in daily life only have a simple base plate. The conventional base plate is simply coated with a protective layer. The weather resistance is not very good and it is not easy to connect.

In order to solve the above problems, an invention patent provides a double-layer PE co-extruded wood board that can improve the weather resistance and facilitate connection and a preparation method thereof.It includes a base material, a cross groove is provided on one side of the base material, a cross is connected to the side of the base material away from the cross groove, and a plurality of rectangular grooves are provided on the top of the base material.The left and right sides of the rectangular groove are connected with bosses. The base material is located on the rectangular groove and is provided with a plurality of upper inclined grooves. The base material is located under the upper inclined groove and is provided with a plurality of lower inclined grooves.The advantage compared with the existing technology is that the double-layer PE co-extruded wood board and its preparation method add acrylate,A terpolymer of acrylonitrile and styrene and a protective coating with a certain degree of weather resistance are applied to the surface of the base material to increase the weather resistance of the entire plastic board.Through the mutual cooperation between the cross grooves and crosses on both sides of the double-layer PE co-extruded board, the purpose of convenient connection and installation is achieved.

Specifically, it includes the following steps:The first step is to pre-treat the recycled material: first clean it with a high-pressure water gun, then clean it with dilute hydrochloric acid, and finally clean it with clean water.
The second step is to crush the raw materials into powder: put the pre-treated recycled materials into the crusher and crush them into powder.The third step is to mix raw materials: mix recycled material powder, wood and bamboo powder, and other additives to obtain base material raw materials.The fourth step, melting: melt the base material raw materials,The fifth step, extrusion granulation: After the base material raw material is melted, it is granulated through a screw extruder to obtain the base material.The sixth step, extrusion molding: put the base material into the extruder, and obtain the plastic board substrate of the base material through the co-extrusion process.
The seventh step, embossing: use the roller to press out the rectangular groove, upper chute, and lower chute on the formed plastic wood board substrate. The eighth step, spray protective layer: spray the weather-resistant powder coating on the surface of the formed base material.Step 9: Recycling of defective products: Check the completed plastic boards, and return unqualified defective products to the crushing process for recycling and production again.
The weather resistance of the entire plastic board is increased by adding a terpolymer of acrylate, acrylonitrile and styrene to the base material and applying a protective coating with a certain degree of weather resistance on the surface of the base material.Through the mutual cooperation between the cross grooves and crosses on both sides of the double-layer PE co-extruded board, the purpose of convenient connection and installation is achieved.