Plastic bottle packaging is essential because so many of the medicines, supplements, beauty products, and beverages we purchase today come in plastic packaging. Without it, the world we know today would be much different. Here are some important terms you need to know when it comes to plastic bottle packaging.


    • Barrier: The protection from deterioration or admittance of moisture or other elements like gasses and oxygen through the packaging material. Barriers can consist of an additive to the resin or a coating on the inside or outside of the bottle.


    • Blow Molding: Blow molding is the process in which a warm plastic hollow tube is placed between two halves of a mold or cavity and blown into the desired shape. Blow molded plastic bottles improve the gas barrier, stiffness, clarity, and impact strength of the plastic container.


    • Capacity: The capacity is the amount of space inside a container for a given amount of product. The normal volume of a bottle published in standard sizes used by industry. When a plastic bottle is filled to capacity, the contents fill it up to the shoulder area of the bottle.


    • Head Space: This is the space between the level of the contents in the neck of the bottle and the closure point. It’s intended to furnish space for expansion of product due to heat or other action after the plastic packaging process. Headspace also refers to the amount of space in a corrugated shipper carton filled with plastic bottles or plastic jars.


    • High-Density Polyethylene (HDPE): This is a rigid, though, and strong resin that has a natural milky color. HDPE has a very good stress crack resistance as well as high impact and melts strength. You can pretty much add any color to HDPE.


    • Injection Molding: Injection molding is a molding process in which, under pressure, melted, or liquefied plastics are forced from a cylinder into a cooled mold cavity to form a desired shape.


    • Polyethylene Terephthalate (PET): This is the most common thermoplastic polyester used in plastic bottle packaging. PET is a stiff, hard, strong, and dimensionally stable material that absorbs very little water. It has good solvent, alcohol, and gas barrier properties, as well as a good chemical resistance.


Americans use nearly 2.5 million plastic bottles every single hour. If you want to get into the plastic bottle packaging business, it’s important that you understand the terms listed above.