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The drying system of plastic materials

2022/12/30 By LZ

drying system

Drying is an essential process for plastic materials. A drying system can help prevent the formation of surface defects and ensure the material has good mechanical properties. Injection molding, extrusion molding, blow molding, film extrusion, and thermoforming are standard plastic processing technologies that require drying after the melt phase and before cooling or solidifying to improve their products’ quality.

Drying system

The drying system of plastic materials often dehydrates various products. The drying system has a unique design, a durable structure, and the highest technology. The machine has excellent heat insulation, cooling, low noise, and low cost.
A drying system is an essential process in plastic recycling to remove the moisture from the waste plastics before their re-melting into new products.

Injection molding

Injection molding is a plastic manufacturing method that uses molds to shape raw materials into the desired part. Moreover, injection molding produces various plastic parts, including consumer goods such as auto parts and toys. It also often makes parts that are too complex for other processes or require more accurate dimensions than using different methods.

And injection molding is one of the most common methods for manufacturing plastic parts. Capable of manufacturing various plastic products, including automotive components and consumer goods like toys.

Extrusion molding

Extrusion molding is a process that uses a die to shape the plastic material. The plastic material is forced through a die under high temperature and pressure. It requires heat, stress, and friction to form the plastic material into the desired shape.

There are two types of injection molding: cold runner and hot runner. In the cold-runner method, the plastic material is cooled before it enters the mold cavity. This method requires less energy and is more environmentally friendly.

Blow molding

The blow molding process is a method for forming plastic materials into hollow shapes. The process is similar to injection molding, but instead of injecting the material into a mold from one end, it’s blown into an open cavity from above.

The blow molding process uses a machine to form plastic into a hollow, bubble-like shape. The device heats the plastic, which is then injected into an open cavity and blown by compressed air or steam.

drying system

Film and sheet extrusion, thermoforming

When plastic sheet and film is made by extrusion, the material is heated and forced through a die to create the desired shape. The process can make plastic sheets, film, tubing, and forms.

The process of extrusion is used to make a wide variety of plastics, including polystyrene and PVC. Low-density polyethylene (LDPE), high-density polyethylene (HDPE), and linear low-density polyethylene (LLDPE) are all made by the extrusion process.

Pipe extrusion, profile extrusion, cable production

Pipe extrusion is the production of pipes, profiles, and wire. Profile extrusion produces profiles, tubes, bases, and profiled pipes. Cable production is the production of cables.

The most common extrusion processes are Single-stage: high pressure (HP) / low pressure (LP) / ultra-high pressure (UHP), Multi-stage: high pressure (HP), low pressure (LP), and ultra-high pressure (UHP).

Plastic recycling

Plastic recycling is converting waste or discarded plastics into new products.

It is an integral part of the circular economy, which aims to keep materials in use for as long as possible.

It is essential to select the right drying system for each plastic material

The drying process depends on the following:

-the type of plastic material;

-its shape, size, and volume; and

-the type of equipment used.

Machines that use large quantities of plastic are often more efficient than those that process smaller amounts. For example, injection molding machines can produce hundreds or thousands of parts per hour, while blow molding machines typically produce only one or two bottles every few minutes.

To sum up

In conclusion, we can say that the drying system of plastic materials plays a vital role in the production process. The drying system can effectively remove moisture and air from plastic products to meet the requirements of various industries.

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