There are different stages used for creating a plastic bottle. There are four different kinds of plastic that are used for making plastic bottles. In general, a plastic bottle manufacturer might use one among the four different kinds of plastics.  In general cases, the plastic bottle that is used for the purpose of carrying water along with other liquids like juice, etc., are created by making use of polyethylene terephthalate (PET). The reason for using PET in most plastic bottle manufacturing is because the plastic is highly durable and also light. It can be molded easily without adding extra weight. This makes it highly comfortable for being carrying around in general. The next most commonly used plastic is polyethylene (PE). It has a high density structure and is used for creating though and thick plastic bottles. These bottles are commonly used for selling and storing detergents. In its low density structure, a PE bottle can be molded to be a squeeze bottle as well. The other kind of plastic bottle is polypropylene (PP). These bottle materials are commonly found to be used in making pill bottles and other plastic medicine storages. Polycarbonate (PC) is the last variety of plastic used in bottle manufacturing. PC is used in making refillable water bottles and other plastic reusable storage materials. The composition of the plastic material will be helpful in deciphering the use and variation in each kind of plastic. Commonly used in PET Bottle Making Machine.

MATERIALS THAT ARE USED IN MANUFACTURING A PLASTIC BOTTLE:

Plastic bottles are most commonly manufactured by using materials like PET, PC, PE and PP. PE or Polyethylene Terephthalate is the most commonly used plastic material used in common plastic bottles. They are generally made for single consumption usage. Generally used in PET Bottle Making Machine. 

The Polyethylene Terephthalate plastic is further divided into two kinds of plastic. They are “Low-Density Plastic” and “High- Density Plastic”. The manufacturing of each kind of PET will be explained below. The usage of plastic in manufacturing bottles are varied. There are diverse purposes for plastic bottles such as storing liquid materials like soda, milk, petrol, diesel, oil, shampoo, detergents, conditioners, sauces, cooking ingredients, etc.,. Plastic bottles are often used for storing dry materials such as medicines, nutrition and diet supplements, dry grains, etc. When in raw form, a plastic is created by using organic polymers such as ethylene and polyethylene. When the plastic is in its soft condition, then it is easy to be molded and structured into a comfortable shape. This is later casted into a solid condition.

PET PLASTIC (POLYETHYLENE TEREPHTHALATE)

Polyethylene Terephthalate is a kind of thermoplastic polymer which is available in two different forms. One is the transparent kind and the other is the opaque kind. On the basis of the material that has been used in manufacturing the plastic, and the composition of the material, Polyethylene Terephthalate plastic can be manufactured in either way, the opaque plastic or the transparent plastic. Petroleum Hydrocarbons are used for the manufacturing of Polyethylene Terephthalate plastics. It is a common raw material that is used for all kinds of plastics. Petroleum Hydrocarbon under a reaction between terephthalic acid and ethylene glycol will enable in the creation of Polyethylene Terephthalate plastic. After the creation of PET plastic, it is then polymerized for the creation of lengthy molecular chains. These chains will let the creation of PET bottles to be created. And used in PET Bottle Making Machine

The process of polymerization in itself can be termed as a complete process. It is responsible for most of the differences that occur between the two different manufactured batches of PET plastic. During the process of polymerization, there are residues and impurities segregated. These can be of two different kinds. One is called as diethylene glycol and the other kind of impurity is called as acetaldehyde. The impact of diethylene glycol is highly prevalent in Polyethylene Terephthalate plastic despite of its meager amount of secretion. On the other hand, acetaldehyde is not just produced during the process of polymerization but it is also created when the manufacturing process of a bottle begins, The huge amount of acetaldehyde in Polyethylene Terephthalate plastic that is used for the manufacturing of bottles can provide a different and odd taste to the liquid that is stored within it.

High-Density Polyethylene

The recognition code-2 of resin represents the high density polyethylene (HDPE). It is highly necessary for the construction as it very affordable and also produces a proper and capable moisture barricade. These are the reason that make high density polyethylene highly used in the manufacturing of plastic bottles. The major ingredient for the construction of high density polyethylene is petroleum. Petrol is a naturally produced material that is prevalent in geographical creation under the layers of Earth. High Density polyethylene is capable of standing strong against varied liquids and also possess a higher density in comparison to its strength ratio. This character makes it the best plastic that can be used for the manufacturing of reusable as well as recyclable bottle. These plastics are also most commonly used for the manufacturing of pipes, fireworks, plastic bags and lumbers. Also used in PET Bottle Making Machine for the manufacturing of plastic bottles that are durable and strong of long duration usage.

Low Density Polyethylene

Low density polyethylene has a very familiar and parallel construction to High Density Polyehtylene. But the only difference is that LDPET is more transparent with less usage of chemicals and more flexible in contrast to HDPET.  LDPET holds a resin recognition code-4. It is constructed using a monomer ethylene and is also highly prevalent in the manufacturing of plastic bags. The other objects commonly made using LDPET are plastic detergent bottles, dispensing storages, squeeze bottles that are commonly used for storing ketchup, honey etc. Commonly used in PET Bottle Making Machine for the manufacturing of plastic bottles, ideally for the manufacturing of single usage plastic bottles. These are also highly common kind of plastic bottles.