injection blow moulding explore the working process of the hdpe ...

by:Hengju     2019-06-27
The high density polyethylene blow molding machine consists of molds, mechanical and electrical instruments and programmable logic controllers.This machine works efficiently and can produce hundreds of plastic bottles at a time.To add more advanced features to it, we have been working on this device.
Blow molding is the manufacturing technology of hollow plastic parts.The machine is used to manufacture glass bottles for the beverage production industry.The blow molding process mainly includes injection stretch blow molding, injection blow molding and extrusion blow molding.
This process starts with melting and gathering plastic to form tubes.Like a plastic piece with a hole through one end of compressed air.This tube-Then clip in the mold like a block, and then the air is blown in.
Plastic is pushed out with the help of air pressure to match the mold.Once the plastic cools down, it becomes hard.The mold is then opened to pop up the part.
The price of blow parts is much higher than that of injection productsmolded parts.The old model of the blow molding machine was invented in 1983.With the invention, the blow molding process began.
At that time, the number of products was very limited.Once changes and productivity increase, the number of products produced increases accordingly.In this technique, the plastic is melted and then squeezed into the hollow tube.
Then capture the tube by closing the air traffic control.Then blow the air into the hollow tube.So, just like the structure, expand it like an empty bottle or container.After the plastic cools, open the mold and pop up the part.
Intermittent and continuous are two variations of this molding technology.This molding technology is used for the mass production of hollow plastic and glass objects.In this process, the polymer is injected according to the core pin.
The pin is then rotated to the inflatable blow molding station and cooled down.This is a blow molding technique that uses the least amount and is usually used to make small medical and single service bottles.The whole technology is divided into three steps: Injection, blow and injection.
The advantage of using this method is that it creates an injection neck for precision.There are also shortcomings in this process.It is only suitable for bottles with smaller capacity, because it is difficult to control the base when blowing the bottle.
No increase in barrier strength was found.This process is further divided into two methods, named respectively.Stage and two.stage methods.The single-The stage process is divided into three-Four stationsStation machine.
In the two-Stage method, the plastic is first formed into a "pre-made Rod" using the injection molding process.There is a benefit of using both methodsstage process.The output is very high.There are some restrictions on the design of the bottle.
Pre-orders are sold as a complete item.
This process is suitable for rectangular, cylindrical and oval bottles.There is also a disadvantage.Despite the compact system, the cost capital is very high and the floor space required is also very high.The single-Stage process also has some advantages, such as suitable for small batch production and short-term operation.
The only downside to using this technique is that the bottle design is limited and only the champagne base is made for carbonated bottles
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