EPS Pre-Expander Machine

Through innovative technology, stable and reliable quality, fast and professional services, and rigorous and efficient management, we guarantee to provide customers with more valuable EPS Pelletizer, EPS Mould, EPS Pre Expander. Our company pursues economic benefits while equally pursuing social benefits and ecological environment. We promise that we will wholeheartedly cooperate with new and old customers from all walks of life for mutual benefit and common development with professionalism, integrity, excellent quality, good service and the lowest price.

Pre expander Machine is the head component of EPS production line, including High Efficiency Continuous EPS pre expander machine, Batch Pre-expander Machine, Fully Automatic Vacuum EPS Pre expander Machine, Lost Foam EPS Batch Pre expander Machine, and the eps pre expander for cement mixing.

1. EPS pre expander use Mitsubishi PLC and Winview touch screen to control whole working automatically;

2. EEPS pre expander use vacuum system to convey raw material from bottom to top loader, no blocking material hose and no breaking EPS beads;

3. Machine first expansion and second expansion both uses PT650 electronic weighing meter to control weighing, accuracy to 0.1g;

4. EPS pre expander uses Japanese Pressure Reducing Valve to ensure stable steam input;

5. EPS pre expander with preheating and main steaming. Using small valve to do preheating till certain temperature then do main heating, so material can be expanded properly;

6. Machine control steam and air pressure properly inside expansion chamber, material density tolerance lower than 3%;

7. Machine agitating shaft and inner expansion chamber are all made of SS304;

8. Steam proportional vale, air proportional valve and Korean vibration sensor are optional.

The production line adopts a two-machine tandem high-foam sheet production process. The PS foam sheet produced is a new type of packaging material, which not only has good heat insulation and cushioning properties, but also has a pearl-like appearance and color. It has the advantages of shockproof, sound insulation, heat preservation, moisture proof, safety and hygiene, and plastic absorption. After vacuum thermoforming, it is widely used in packaging and advertising boards for food, fruits, electronics, daily necessities, hardware products and other products.

main feature

1. The machine adopts PLC programmable controller and touch screen control, automatic suction, automatic electronic weighing, automatic control of the pressure and temperature of the barrel when distributing materials, and automatic discharging to the vulcanization bed. The distributing is completed at one time to ensure the machine Automatic cycle production

2. The electrical appliances, pneumatic components, valves, etc. used in the machine are all excellent products, thus ensuring the stability, reliability and long service life of the machine

The stainless steel heat-insulating barrel is used, and the stainless steel laser cut steam vent plate, the vent seam is controlled at 0.3 mm, and the air permeability is over 85%.

Fully automatic production adopts PLC programmable controller and touch screen, advanced data storage function can obtain the set parameters of various foaming materials at any time.

It adopts screw feeding device and electronic weighing device.

Adopting a closed pre-foaming barrel with counterbalanced double exhaust ports, precise valve control parts can accurately control the temperature, and a highly sensitive light sensor controller can accurately control the material level. The high-efficiency quantitative foaming machine is equipped with a stainless steel fluidized dryer to ensure that the stable foamed raw materials are transported to the curing silo. The integral fluidized drying bed includes a drying bed, a vibrating screen, a hard block crushing processor and a conveying station.

The foaming density is uniform and the error is within ±1.5%.

In addition to primary pre-foaming, secondary foaming can also be selected. The foaming density is 8-40kg/m3, which can be automatically completed, sieved, crushed, conveyed, etc.

The host adopts stainless steel structure, heat insulation device, stable quality, reliable performance, high production efficiency and low price.

10.5-inch high-pixel color touch screen, and the molding process is demonstrated synchronously on the touch screen; ◆This machine can adopt ordinary, high pressure, back pressure, and pulse feeding methods to ensure the feeding effect of the product. This machine adopts water pressure system to ensure stable water pressure;

◆Low energy consumption, low pressure molding technology;

◆Efficient vacuum condensing system to ensure low product water content;

◆The unique design adds a hydraulic station to maintain low oil temperature operation and prolong the service life of the hydraulic oil; ◆Hydraulic quick relief valve can avoid the vibration of the machine when the mold is opened;

The external high and low water pressure display instrument is convenient for daily maintenance of the hydraulic station; the guide rod is equipped with a replaceable wear-resistant alloy guide rod bushing and dust ring;

The stainless steel control cabinet is not affected by the harsh production environment in the workshop; the sturdy and durable all-stainless steel punching net safety door and shock-absorbing glue;

◆Adjustable demoulding template;

◆Adopt the balance valve imported from Germany to precisely adjust the energy valve;

◆The pressure sensor imported from Germany can avoid the influence of pipeline back pressure, ensure the permeability of the product and the best curing effect;

Can be equipped with manual or electric hoist.

Before processing EPP/ETPU, pressure must be used to increase the pressure inside the raw material particles to produce molded parts with lower density. This is because compressed raw materials can be used to produce molded parts of various densities. In addition, the pressure can also reduce the shrinkage of the molded part after demolding, and the surface effect is better. Specifically, the carrier pressure is achieved by the gas penetrating the outer wall of the particle. In this process, the carrier gas pressure can be adjusted by changing the time, pressure, temperature and other parameters. After the pressing process, the density of the molded product decreases.

◆For customers with multiple vacuum pumps, creating a central vacuum system is a very economical choice. Generally speaking, the operation of the central vacuum system consumes much less electricity than the operation of multiple vacuum pumps that operate separately;

◆For operators, another very important advantage is: improve reliability and reduce downtime;

◆In addition, if the vacuum pump is placed far away from the production area, it can eliminate heat and noise sources, improve the quality of the working environment, and increase the output.

How does EPS Pre Expander work?
The EPS raw material is conveyed as granules to the pre-expander, where it is heated by means of wet steam. The hot steam softens the polystyrene beads and activates the blowing agent dissolved in them. This evaporates and causes the softened beads to expand. The bulk density can be adjusted by the weight of the raw material and the foamed volume. The EPS beads pre-expanded are then cooled and stabilized in a fluidized bed on an air cushion before being conveyed by blower via a rotary feeder into the silos.
Welding of the end products: During the subsequent intermediate storage, the blowing gas diffuses out of the pre-expanded polystyrene beads and air penetrates. This "packed air" is further processed on an automatic molding machine. To achieve low bulk densities, EPS can also be post-foamed in a second pass.

Each individual member from our large performance revenue crew values customers' needs and company communication for EPS Pre-Expander Machine. Years of talent reserve has built a professional technical team with strong comprehensive quality, which guarantees the continuous innovation ability of our company's technology. We have now built a service platform to meet customer needs in multiple dimensions and enhance customer experience.

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