A method for improving the quality of foamed plastic materials

Abstract

The invention relates to a method for improving the quality of foamed plastic materials, which uses a device for improving the quality of foamed plastic materials. The device for improving the quality of foamed plastic materials includes an external rotation mechanism and an internal rotation mechanism. The lower end of the turning mechanism is installed on the existing working ground, and the inside of the outer turning mechanism is provided with an inner turning mechanism. The present invention adopts the design concept of a multi-stirring structure to form foamed plastic materials, and the outer turning mechanism and the inner turning mechanism are matched. The formed multiple agitation working modes can greatly improve the molding quality and efficiency of the foamed plastic material, and at the same time, the device as a whole can adopt a water-proof stewing method for the foamed plastic material, which is conducive to improving the overall heating uniformity of the foamed material.

Description

technical field [0001] The invention relates to the technical field of foamed plastic molding, in particular to a method for improving the quality of foamed plastic materials. Background technique [0002] The technology of plastic foaming has a long history. It was the foam bakelite in the early 1920s, which was made by a method similar to that of foam rubber. In the 1930s, rigid polyurethane foam and polystyrene foam appeared. In the 1940s, there were polyethylene, polyvinyl chloride, Epoxy resin, phenolic foam, and expandable polystyrene foam and soft polyurethane foam in the 1950s. Now, basically all plastics, including thermoplastic and thermosetting, can be foamed into foam plastics. Industrial preparation methods There are: extrusion foaming, injection foaming, molding foaming, calendering foaming, powder foaming and spraying foaming, etc. Among them, injection foaming is one of the most important molding methods. The plastic foaming method depends on the used The di...

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Problems solved by technology

[0003] 1. When the direct heating method such as electric heating is commonly used to heat the foamed material as a whole, the whole foamed material is prone to heat stratification, that is, the foamed material melts unevenly, and the overall quality of the foamed molding is low and the molding The efficiency is low, and at the same time, a bonding layer is produced at the bottom of the foam material holding structure due to overheating or uneven heating;

[0004] 2. In the process of using the water-proof stewing heating method for the foaming material, the heating water source is always in a static state, so that the water temperature cannot be effectively controlled. Even if a stirring structure is installed, the working range of a single stirring structure is limited. The heating uniformity and effective heating degree of the foamed material are lower

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