Continuous co-extrusion self-reinforcing equipment and continuous co-extrusion self-reinforcing method for biomass wood plastic foaming floor

Abstract

The invention discloses continuous co-extrusion self-reinforcing equipment for biomass wood plastic foaming floors. The continuous co-extrusion self-reinforcing equipment comprises a conical double-screw extrusion main machine, a co-extrusion die, a conical port die and a dragger which are sequentially arranged. The continuous co-extrusion self-reinforcing equipment is characterized by further comprising an extrusion auxiliary machine; the extrusion auxiliary machine is arranged above the extrusion main machine; an included angle beta between the extrusion auxiliary machine and the extrusion main machine is 20 to 60 degrees; and the extrusion ratio R of the conical port die is 2 to 10, and an extrusion conical angle alpha is 15 to 60 degrees (shown in the description). S1 expresses cross section area of an inlet end of the conical port die, S0 expresses cross section area of an outlet end of the conical port die, and S expresses cross section area of a core layer floor. According to the continuous co-extrusion self-reinforcing equipment disclosed by the invention, surface layers of co-extrusion products are stretched by arranged conical port die and dragger, so that the co-extrusion products generate plastic deformation, the tensile strength and ageing-resistant performance of the products are improved, and the service life of the products is prolonged; and meanwhile, the core layer floor adopts a foaming method, so that the weight of the products can be reduced, and the properties such as nail-holding ability and impact resistance of the products are improved.

Description

technical field [0001] The invention relates to extrusion equipment, in particular to a continuous co-extrusion self-reinforcing equipment and method for biomass wood-plastic foam flooring. Background technique [0002] Biomass wood-plastic composites are crushed wood powder (sawdust, wood, branches), agricultural waste (rice husk, straw, fruit husk) and other plant fibers, and then added to thermoplastics as fillers, through extrusion, injection It is a new type of material prepared by traditional plastic processing methods such as molding and pressing. It has the dual characteristics of wood and plastic. Compared with wood, it has good corrosion resistance, water resistance and mechanical properties. Compared with plastic, It improves the dimensional stability and thermal stability of the product, so it has a very broad application prospect. However, ordinary wood-plastic composite materials also have disadvantages such as high density, poor aging resistance, low impact s...

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Problems solved by technology

However, ordinary wood-plastic composite materials also have disadvantages such as high density, poor aging resistance, low impact strength, and poor nail-holding force, and are prone to serious fading and fracture during use.

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