Manufacturing equipment for five-layer melt co-extruded fiber reinforced plastic sheet and its application method

Abstract

The invention relates to the field of plastic or plates or sheets made of materials in a plastic state, and particularly relates to manufacturing equipment for a five-layer melt co-extruded fiber reinforced plastic plate and an application method thereof. The manufacturing equipment for the five-layer melt co-extruded fiber reinforced plastic plate comprises two layers of synchronous fiber unreeling support frames (1), a fibrofelt clamping machine (21) and a fibrofelt conveying platform (3). The manufacturing equipment for the five-layer melt co-extruded fiber reinforced plastic plate is characterized by further comprising an upper-layer screw extruder (41), a lower-layer screw extruder (42), a middle-layer screw extruder (43), a feeding machine (5) and a plate clamping machine (22). The application method of the manufacturing equipment for the five-layer melt co-extruded fiber reinforced plastic plate comprises the step of adjusting an extrusion force between an upper extrusion belt (81) and a lower extrusion belt (82) in a steel band extruding machine (8). The manufacturing equipment is reasonable in structural design, effective in material structure reinforcement, and excellent in section structure comprehensive mechanical performance.

Description

technical field [0001] The invention relates to the field of plastics or boards or sheet products produced from materials in a plastic state, in particular to a five-layer melt-coextruded fiber-reinforced plastic board manufacturing equipment and its use method. Background technique [0002] At present, plastic sheets are usually divided into single-layer, three-layer and five-layer. The single-layer sheet manufacturing equipment consists of a single-screw extruder, a flat-mouth extrusion die, a set of three-roll calender, cooling and setting machine, A production line composed of tractors, sheet trimming machines, sheet cutting machines and other devices. The single-layer plastic sheet manufactured by this equipment has no grid-like fiber reinforcement in structure. The three-layer plastic sheet production equipment is extruded by a single-screw extruder and two flat-mouth extrusion dies or two single-screw extruders and two flat-mouth extrusion dies, one single-layer fiber...

AI Technical Summary

Problems solved by technology

However, the plastic layer part in the existing plastic sheet, especially the plastic in the middle layer part, has not been reinforced by inorganic or fiber, and belongs to the flexible material of low elastic modulus and low moment of inertia material. Under the joint action of tensile force and thermal expansion force, the compressive strength of the pure plastic material in the existing plastic sheet cross-section structure is not enough, and the tensile strength of the plastic sheet reinforced by glass fiber mesh cloth on both sides of the second middle layer is not enough, and its cross-sectional structure is under external pressure. Under the action, it is easy to produce deformation, and then cause the plate to bend, warp, shrink, elongate and other deformation phenomena, which cannot meet the use requirements of building formwork, building wall panels, vehicle and ship panels, furniture panels, etc.

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