Plastic rubber sheet forming and shaping processing method

Abstract

The plastic plate forming and setting process includes extrusion plastic plate, cooling to form, and post heating and setting treatment. In the post heating and setting treatment, the plastic plate is heated to certain temperature and maintained for one period, and this makes the plastic molecule arrangement formed in the extrusion altered, eliminates the residual stress caused in the heating extrusion and strengthens the molecular structure of the plastic plate. The present invention raises the heat resistance and reduces the deformation caused by ambient temperature change of the plastic plate.

Description

technical field [0001] The present invention is related to plastic plates, in particular to a plastic plate molding and shaping processing method. Background technique [0002] General plastic sheet 1 molding processing method, please refer to figure 1 As shown, its manufacturing steps are as follows: [0003] (A) Preparation of plastic raw materials 2: [0004] The plastic raw materials are fully mixed and stirred 2a, and then put into an extruder. [0005] (B) Extrusion operation 3: [0006] The plastic raw material is heated and softened in the extruder and transported to the screw of the extruder, so that the softened plastic is continuously extruded from the die of an extrusion mold by the screw or other pushing methods. [0007] (C) Cooling 4: [0008] The plastic extruded from the die of the extrusion mold is solidified and formed after being cooled by the forming mold. [0009] (D) Cutting job 5: [0010] Cut the cured semi-finished product into a predetermine...

AI Technical Summary

Problems solved by technology

[0011] After the plastic sheet is extruded, cooled and formed, due to the rapid cooling and solidification of the plastic during the heating and extrusion process, the arrangement of the plastic molecules is different, resulting in residual stress. The existence of residual stress leads to poor rigidity of the plastic sheet, which is prone to environmental temperature changes Deformation, especially the deformation of thin plastic sheets is more obvious. Thin plastic sheets are widely used, such as curtain blades, floor trims or decorative panels. Due to the changing climate and environment, it is very easy to The internal deformation will cause unusable situation. Traditionally, to improve this weather resistance problem is to add weather-resistant and heat-resistant modified raw materials to the plastic raw material components. However, due to the high cost of the added raw materials, the plastic sheet The manufacturing cost of the film also increases accordingly, which is very unfavorable to the competitiveness of manufacturers in the plastic molding product market with fierce price competition

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