Plastic Packaging Bottles: 4 Resins You Can Choose From

Are you shopping for plastic bottles that you can use to package your products? Read on and discover the attributes of some of the common resins from which plastic bottles are made. Use this information to select the most appropriate type of bottle for your application.

PVC Bottles

Some plastic bottles are made from polyvinyl chloride (PVC). These bottles are transparent and have high resistance to oils. They are flexible and can block most gases from penetrating into the contents of the bottle. Their impact resistance is also high. However, PVC bottles are vulnerable to solvents in addition to having low chemical resistance. They are also unable to withstand high temperatures. PVC bottles can be used to store products that need to be kept in freezers. They can also be used to store cooking oil, cosmetics and other similar products.

PET Bottles

Polyethylene terephthalate (PET) bottles are ideal for people who would like to package carbonated drinks, milk, medicine and other similar products. These bottles are resistant to penetration by alcohol and essential oils. They can also block moisture and gases from reaching the contents stored within the bottle. PET bottles exhibit good chemical resistance too. However, the major downside of PET bottles is that they cannot be used for high-temperature applications. They can also be damaged by acetones and ketones.

Polypropylene Bottles

Polypropylene (PP) bottles are suitable for people who would like to package hot substances, such as hot beverages. This is because this material can withstand high service temperatures. The material is very rigid in addition to having high chemical resistance. Moisture is unable to penetrate it. The downside of PP bottles is that they are susceptible to damage in low-temperature applications, such as when they are stored in freezers.

HDPE Bottles

High-density polyethylene (HDPE) bottles are some of the most cost-effective bottles on the market. They are good for packaging perishables, tablets, supplements and household cleaning liquids. They remain unchanged under temperatures that are below freezing point. They are translucent and offer high impact resistance. However, HDPE bottles cannot be used in an application that requires the products to be vacuum-sealed. They are also degraded by high temperatures. Aromatic solvents can also easily penetrate them.

As you can see, each type of plastic bottle discussed above has its own strengths and weaknesses. However, other types, such as K-resin and polystyrene bottles, also exist. It is therefore prudent for you to talk to different bottle suppliers about your products and requirements. Those experts will recommend the type of resin that is best suited to your needs.