Blow moulding is a versatile manufacturing process that comes in various types, each suited to specific applications and product requirements. The two primary types of blow moulding are extrusion blow moulding and injection blow moulding. Let's delve into each of these methods:
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In extrusion blow moulding, a continuous tube or parison of molten plastic is extruded vertically.
The parison is then captured by closing it into a cooled metal mold.
Compressed air is introduced into the parison, causing it to expand and take the shape of the mold.
Once the plastic cools and solidifies, the mold opens, and the finished product is ejected.
Packaging: Plastic bottles, containers, and jars for beverages, household products, and personal care items.
Industrial Products: Drums, barrels, and large containers.
Toys: Hollow plastic toys, inflatable structures.
Well-suited for large, hollow containers.
Cost-effective for high-volume production.
Injection blow moulding begins with the creation of a preform through injection molding. The preform has a neck that is often threaded.
The preform is transferred to a blow moulding machine.
The preform is heated, and a core rod is used to inflate it within a blow mold.
The plastic takes the shape of the mold as it cools, and the finished product is ejected.
Packaging: Small bottles for pharmaceuticals, cosmetics, and food products.
Medical Devices: IV bottles, containers for pharmaceuticals.
Automotive: Hollow parts like air ducts and fluid reservoirs.
Precise control over neck finish and thread details.
Suitable for small to medium-sized containers.
This type combines aspects of both extrusion and injection blow moulding.
A preform is injection-molded and then heated.
The heated preform is stretched longitudinally and blown into the final shape using high-pressure air.
PET bottles for beverages, water, and other liquid products.
Produces high-quality, lightweight containers.
Well-suited for PET containers.
Similar to extrusion blow moulding, but the parison is continuously extruded.
The parison is shaped using a mold as it continues to move through the process.
The finished products are cut off from the continuously extruded tube.
Pipes, hoses, and other tubular products.
Continuous production for long, tubular shapes.
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In everyday people’s lives, the use of plastic bottles for packaging drugs, cosmetics, food, beverages, and many other products has grown so wide and deep. These bottles are produced by a bottle-blowing machine. In this article, I will be sharing with you a detailed explanation of all there is to bottle blowing machines. We will discuss what they are, their uses, the plastics they work on, and the
In everyday people’s lives, the use of plastic bottles for packaging drugs, cosmetics, food, beverages, and many other products has grown so wide and deep. These bottles are produced by a bottle-blowing machine.
In this article, I will be sharing with you a detailed explanation of all there is to bottle blowing machines. We will discuss what they are, their uses, the plastics they work on, and the production process of using bottle-blowing machines for bottle manufacturing.
A bottle blower is a piece of automated high-speed equipment that produces plastic bottles of different shapes and sizes with high-pressure compressed gas. With this machine, a plastic bottle manufacturer can be able to produce a wide broad range of finished plastic bottle products in varying sizes and shapes.
However, it is important to purchase the bottle-blowing machine from a reliable and reputable manufacturer or supplier that can guarantee you are getting the best out of the use of the machine.
Plastic bottles are used to hold liquids and semi-solid products. Therefore, the bottle blower finds applications in industries that produce these products. These industries include;
The beverage industryThe food industryThe cosmetics industryThe pharmaceutical industry
There are several examples of these different types of plastic options available for use with a bottle blowing machine. Each of these plastics possesses unique properties that make them the correct plastic for a particular product.
Polyethylene Terephthalate (PET): Polyethylene terephthalate (PET) is a type of polyester used in the production of plastic bottles.
High-Density Polyethylene (HDPE): HDPE is the most commonly used to manufacture bottles for different products that require the safest and most durable plastics.
Polycarbonate (PC): PC is a clear and strong plastic that is the perfect choice of plastic for the production of complex-shaped plastic bottles that requires extreme strength.
Polypropylene (PP): PP is a popular low-density and extremely stiff plastic that is suitable for bottle production of high-temperature products.
The process is divided into four major steps.
Pre-heating
In the preheating step, the bottle preform body (inner and outer walls) is heated to a suitable molding temperature. The bottle mouth is cooled during this preform heating.
Bottle blowing
This is the stage where the uniformly heated bottle preform is sent to the bottle blow mold to blow the bottle with a high-pressure gas and later allowed to cool.
Demoulding
After blowing the bottle, that machine begins to remove the molds.
Transmission
The molded bottles are then pulled out or blown out through the conveyor belt. Are you in need of a premium bottle blowing machine?
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