During the curing process of the EPS automatic air-cooling block molding machine, the beads are cooled by air, and the foaming agent and water vapor in the pores of the cells are condensed into a liquid, so that a vacuum is formed in the cells. At the same time, air permeates into the interior of the cell through the cell membrane, so that the pressure in the cell is balanced with the external pressure. This will make the beads after the pre-expansion elastic. During the ripening storage process, the foaming agent also diffuses outward at the same time, so the shelf life of the beads after the pre-expansion cannot be too long.
Wednesday, March 31, 2021
Monday, March 29, 2021
Sunday, March 28, 2021
We strive for perfection in every detail of the product
From the shutdown at 8 o’clock yesterday evening to the current 12 o’clock, the vacuum negative pressure is still guaranteed to be around minus six. One 11 kW vacuum pump is equipped with five machines, and the negative pressure does not fluctuate.
Friday, March 26, 2021
Wednesday, March 24, 2021
What are the advantages of foam packaging boxes?
No matter from any industry, the outsourcing packaging box for products is very important in the process of sales. The packaging boxes of many products also use foam packaging boxes. So what are the advantages of this packaging method?
First of all, if a foam packaging box is used, it can reduce the cost of transportation. Because its packaging weight will be reduced. It also has a very good ability to resist impact. If a collision occurs during transportation, it can cushion well, which can greatly reduce the degree of damage to the product.
Secondly, its ability to adapt to temperature changes is also very strong. And it can also meet the requirements of some packaging boxes. The water absorption rate is very low, and its chemical composition is very stable. It has good tolerance to some acidic and alkaline substances, and it will not corrode due to internal products. It is also very low in thermal conductivity, can be used as a container for fast food and as an incubator, etc., so it has a wide range of uses.
Thursday, March 18, 2021
The role of epp raw materials
Wednesday, March 17, 2021
Batch pre-expander--Including stainless steel dryer bed, screw conveyer,...
1.Steam system: Accurate pressure reducer and PID control system (proportional steam valve system) to keep very stable and accurate steam, ensure material variation;
2.Pressure control: Pressure sensor with multi-steam and exhausting system to keep expansion chamber pressure stably, also reduce the steam consumption;
3.Temperature control: Adopts temperature sensor and compressed air proportional valve to keep accurate expansion temperature, which is suitable for high density expansion, less broken beads;
4.Material level control: Keeps accurate weighing scales and vibrated level sensor control, ensure less density tolerance.
5.Weighing filling: Set filling weight in touch screen and electronic weighing filling to realize filling accurate and automatically;
6.Electric control: Adopts PLC programmable controller and touch screen, electronic parts, valves are famous brand, which control the whole working procedure automatically and stably.
Tuesday, March 16, 2021
Thursday, March 11, 2021
EPS foam for sales
EPS foam is a lightweight material made of polystyrene resin, foaming agent and other auxiliary materials, heated and foamed. It has the advantages of light weight, small thermal conductivity, low water absorption, water resistance, aging resistance, low temperature resistance, easy processing, low price and high quality. It is an indispensable heat preservation and preservation material container for seafood freezing, vegetable preservation, incubator, cold storage, refrigerator car, railway passenger car, etc.