About us

Hangzhou Dongshen Machinery Engineering Co., Ltd is a company specially dealing with EPS machines, EPS moulds and spare parts for EPS machines. We can supply all kinds of EPS machines like EPS Preexpanders, EPS Shape Molding Machines, EPS Block Molding Machines, CNC Cutting Machines etc. Having strong technical team, we help clients to design their new EPS factories and supply whole turn-key EPS projects to them, also we help old EPS factories to improve their production by reducing energy consumption and increasing production capacity. Apart from that, we offer the service of designing special EPS machines as per clients request. We also custom make EPS moulds for other brand EPS machines from Germany, Korea, Japan, Jordan etc.

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  • What is EPS

    Expandable polystyrene is a kind of polystyrene product with foaming agent. Abbreviated code “EPS”. The appearance is colorless and transparent bead particles. Common foaming agents are low boiling hydrocarbons (such as petroleum ether, butane, pentane, etc.), which are prepared by one-step reaction of styrene monomer in autoclave; It can also be polymerized and added with foaming agent to gradually penetrate into the polymer body, which is called two-step method. After one-step foaming, the foam cell of the product is uniform and fine, the product has good elasticity, but the...

  • Merry Christmas

    Christmas Eve is the night before Christmas, Christmas is December 25, Christmas Eve is the night of December 24. Apple’s “apple” is homonymous with Ping An’s “Ping”, so the Chinese people use the auspicious meaning of Apple’s “ping an”. So there is the custom of giving apples on Christmas Eve. Sending apples means that those who send them wish those who receive the fruit of peace peace peace in the new year. In Germany, it is said that Santa Claus will dress up as a holy child and put nuts and apples in children’s shoes. He travel...

  • What is the shrinkage in EPS mold manufacturing

    1. Shrinkage deformation will occur after EPS molding and demoulding In general, the shrinkage of EPS is 0% – 0.3%. The specific shrinkage rate is related to the characteristics of each material, process conditions (especially demoulding temperature), product density and thickness. In some cases, such as high demoulding temperature and thick product, EPS products not only do not shrink, but expand. Therefore, the shrinkage deformation of EPS and general molding process characteristics should be considered in the mold manufacturing process. The size of the mold should be appropriately...

  • What’s the application of EPS block molding machine?

    EPS Block Molding Machine is to produce EPS blocks. According to different cooling way, EPS block molding machine can be catogorized to expanded polystyrene vacuum block molding machine and expanded polystyrene air cooling block molding machine. Air cooling block molding machine is suitable for small capacity request and low density blocks production, it’s economic machine. Vacuum block molding machine can produce high density blocks, works fast cycle, with low water content in blocks. Machine all complete with control box, vacuum system, weighing system etc. Type has standard type, transla...

  • What is the EPS mould process of double sealed refrigerator?

    The invention discloses a mold and a production process for the production of EPS packaging lining of double sealed refrigerator, including a moving mold and a fixed mold. The sides around the fixed mold are provided with a bottom plate corresponding to the inner side of the bottom of the moving mold, the top of the bottom plate is provided with a bottom mold, a packaging lining is arranged between the moving mold and the bottom mold, the top surface of the moving mold is provided with a cover plate, and the surface of the cover plate is provided with a plurality of cylinders, A plurality o...