Does pet plastic bottles are better than glass bottles for packaging purposes?

Polyethene terephthalate is a polyester form. For packaging foods and beverages, cosmetic products, pharmaceutical products, and many other products for consumers, PET can be mould into plastic bottles. Containers made of polyethene terephthalate are famous for packaging beverages like sodas, juices, water, salad dressing, peanut butter, hand soap, mouthwash, cooking oil, pharmaceutical, and even tennis balls. PET material has different properties like it is lightweight, economical, nonreactive, and shatterproof. It is a highly valued packaging material. Glass bottles can be recycle easily than plastic baby bottles. But nowadays, Beverage companies avoid reusable glass bottles because the extra effort is requires for the difference in design. On the other hand, PET plastic bottles need less gas and oil and expend less energy than Glass.

2. PET verse Glass

Glass raw materials cost very high. During the process of palletizing and transportation, the glass bottles packaging can damage it. The weight of the glass bottle is higher than the PET bottle. The symbolic weight of the 1.5 liters oil container is 330 g. Plastics have far less footprint of carbon than Glass. Carbon with methane emission from dairy farming and agriculture is one of the main reasons contributing to global warming. Another key factor is the convenience of the consumer. Plastic bottles can sold in any variety of sizes where glass bottles limited. We can recognize PET plastic, it would be mould on the bottom side or any side with the 1 number surrounded by the chasing arrow symbol, and the PETE direction is below the triangle.

PET blow moulding is the process in which Stretch Blow Machines are the second part of the bottle manufacturing process. Health authorities worldwide recognized PET’s safety for beverages, personal care, and food and medical applications. More energy is requires to process Glass than plastic bottles. Glass bottles can recycle without any chemical processing compared to plastic. Plastic is more durable and lightweight. Therefore it can be transport easily without any damage.

2.1 Perceived Quality between Plastic vs Glass

Consumers perceive a difference between the quality of Glass and plastic. A high level of pleasantness found in food products packaged in Glass compared to the same product stored in plastic material. Glass offers a premium look experience. Glass packaging is important for luxury fruit juices, craft cold brew that wants to get a sophisticated place in the market. Plastic is easy to use, and there is no harm, while if a baby holding a glass bottle, she can drop it easily, and it will be dangerous for them.



Plastic can be mould into any shape and size and is less slippery as compared to Glass.

2.2 Difference in Chemical Compatibility and Characteristics

For sensitive products in the personal care industries or pharmaceutical inertness and impermeability offered by glass and liquid that store for an extended period, such as alcoholic beverages. Plastic is more permeable to carbon dioxide and oxygen than glass. Under the process of pasteurization, the glass will not wrap and handle a variety of ranges of temperatures. Plastic is a very versatile material

2.3 Plastic in Bulk vs Shipping Glass:

Shipping glass is expensive and more fragile, and heavier as compared to plastic. Plastic is durable and lightweight and much suitable for transportation. It leaves a smaller carbon footprint. Plastic is an economical and eco-friendly option if you want to ship containers long distances.

2.4 Which are more expensive glass bottles or plastic bottles?

The amount of heat required during production, glass is more costly to produce and even to ship. The glass melting point is higher than the plastic; that’s why it requires more energy during production. In plastic moulding, with the new technology development, that plastic containers 


Location: Lahore, Punjab, Pakistan

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