Familiarity with Types of HIPS Forming is required to produce a variety of HIPS polystyrenes. We know that this material has very strong impact-resistant structural properties. Drying is not necessary for the initial stage to produce and shape HIPS. The material dries at a temperature of 80 ° C for 2 hours.

One of the most important methods of forming HIPS is the use of injection molding. With this method, suitable polystyrenes can be produced for food packaging and container making. In this PETROPROVIDERS article, join us to show you the Types of HIPS Forming.

HIPS molding methods in industries

HIPS molding methods

HIPS molding methods

This polystyrene material is very impact resistant; Therefore, optimal conditions must be provided for its production. In most types of HIPS Forming, HIPS granules solidly enter a funnel and then enter the barrel. In this barrel, these granules are heated and then enter the mold.

Depending on the molding method, the process of producing high impact polystyrene may be slightly different. After entering the mold, this material reaches the required shape and temperature, and then the mold is cooled. Then our material is ready! This material is used to produce various plastic materials.

It should be noted that the use of different formats for HIPS molding has set standards. These standards must be fully observed to make the best polystyrene materials.

Plastic injection machine in the HIPS production process

In plastic injection machines, the material first softens and then moves to the nozzle. It enters the mold and is ready to be molded there. In the barrel is a torpedo to transfer heat well.

Inside the barrel, there is a spiral path that softens the granular material. These materials then go to the second barrel through the valve. In this barrel, there is a piston that takes the material from the first barrel and directs it to the mold.

Currently, the use of this device is very limited; Because this device is very expensive. This device has a very complex system and is not suitable for different industries. Currently, screw devices are used.

Inside the screw injection machines, there is an extruder screw that can be heated. This screw has two roles: it rotates and melts the material. In addition, it is a piston that can go back and forth and pour the material into the mold.

Investigation of HIPS polystyrene injection processes

Types of HIPS Forming are very diverse; There are usually 3 ways to mold high impact polystyrene. These 3 methods are blow-injection molding, injection molding, and injection-stretching molding. In the following, we will examine these 3 methods in full:

The first method for shaping HIPS

In blow-injection molding, first, the initial product is made by the usual method. This material is placed in another mold and then air is blown into this mold. This air exits after entering the mold. This was a summary of the blow-injection molding process.

The second method for shaping HIPS

There are 4 main steps in the injection molding process. After the mold is closed, the screw pushes the material forward without turning. At this point, air escapes from the mold. Then, the cavities are filled and the mold is filled; The spiral then pushes the material forward to keep the pressure constant.

This allows more melt to enter so that the HIPS becomes the desired shape after cooling. Once the valves are closed, molten material does not enter the mold and the pressure inside the mold will remain high. Then, the screw turns and pulls new plastic from the funnel into the mold.

These plastics come forward along with the mold, inside the mold, various heaters heat and melt the plastic. Then, these materials go to the mold and are discharged into the mold. The rest of the molten material then pushes the screw back.

Then, the screw stops according to the previous planning. The mold is then filled. Next, the mold is filled and the screw is prevented from moving. At this point, the screw rests and cools. After molding, the mold cools and the plastic is thrown out. Then, in the next step, the device prepares for the next cycle.

The third method for shaping HIPS

shaping HIPS

shaping HIPS

In this stage of Types of HIPS Forming, the molding is done as in the first method. The difference between this method and the first method is that before the air enters and the final product is formed, the initial product is heated and stretched in longitudinal and transverse directions.

This stretches the amorphous chains of the polymer material and causes it to orient. Then, the chains are lifted in the direction of tension and their overall shape resembles a mold. At this stage, the material gradually becomes the desired strength and shape.

Summary of Types of HIPS Forming

In this article, we saw the Types of HIPS Forming and its methods. Drying is not necessary for the initial stage to produce and shape HIPS. The material dries at a temperature of 80 ° C for 2 hours. One of the most important methods of forming HIPS is the use of injection molding.

In addition, there are two other methods for molding high impact polystyrene. These methods also have a basis similar to the injection molding method, But they are a little different. In general, making durable polystyrene plastics is simpler and faster, and easier with the advancement of science.

It should be noted that the use of different molding methods causes the production of different shapes of this polystyrene. But in general, the use of polystyrene materials is harmful to human and animal health. This substance produces toxic and dangerous fumes in case of fire. It should be noted that global standards for the production of HIPS must be met.

What do you think about Types of HIPS Forming? Will the use of polystyrene be restricted worldwide in the future? How much polystyrene do you use in your daily life? In the comments section, you can ask your questions about polystyrene materials from our experts. You can also contact us to buy the best HIPS polystyrene.