EPS foam article and production technology thereof

Abstract

The invention discloses an EPS foam article which comprises an EPS raw material and a foaming agent; and the mass of the foaming agent is 4.5-7.2% of that of the EPS raw material. The invention further discloses a production technology of the EPS foam article. The production technology comprises the following steps of S1, stock preparation, S2, heating, S3, pre-foaming, S4, curing, S5, moulding, S6, cooling, S7, drying and S8, aftertreatment. The EPS foam article is low in apparent density and high in flexural strength, is of a closed cell structure internally provided with a large number of fine air bubbles and is long in service life. The production technology of the EPS foam article is stable and simple in technological process; the cooling is carried out through a cooling system, so that manual operation is reduced, the cooling effect is good, and the drying time is shortened; cooled water is subjected to settlement by a settling pool, so that pipe clogging is avoided; and the water is softened by water treatment equipment, so that a mould of a forming machine is effectively protected, the service life of the mould is prolonged, the maintenance cost is reduced, and the rate offinished EPS foam is raised.

Description

technical field [0001] The invention belongs to the technical field of EPS molding, and in particular relates to an EPS foam product and a production process thereof. Background technique [0002] Polystyrene resin, referred to as EPS in English, commonly known as a copolymer of polystyrene and styrene, is made of styrene monomer in a certain amount of pure water, adding initiator, dispersant, stabilizer, A polymer material prepared by suspension polymerization of foaming agent and the like. EPS particles and foaming agent can be pre-foamed, matured and molded to produce foamed plastic products, which have the advantages of light weight, low price, low thermal conductivity, low water absorption, good electrical insulation, sound insulation, and moisture resistance. , is currently a high-quality packaging protection material, widely used in household appliances, electronics, machinery, handicrafts, pharmaceuticals, construction and decoration industries. [0003] In the pro...

AI Technical Summary

Problems solved by technology

These air supply equipment generate a lot of compressed air, and the purified compressed air required by EPS foam products is only about 10% of it, and the remaining compressed air is more, and the amount of instantaneous use is large, resulting in large pressure fluctuations and affecting the reliability of the solenoid valve action. , the accuracy of mechanical action

[0004] In the production process of EPS foam products in the prior art, water cooling is generally used for cooling. After the water is cooled, it usually drains the cooled water directly, resulting in a waste of water resources.

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