How to Choose the Packaging Materials for Beverages?

Have you ever wondered why beverages are packaged in glass, metal or plastic? When choosing the right packaging material for your beverage, many characteristics must be considered. Attributes such as the weight of the package, recyclability, refillability, clarity, shelf life, breakability, shape retention and temperature resistance all play a role in your selection process.

Let's review the characteristics and feasibility of the three main beverage materials: plastic, glass and metal.

Glass
One of the classic materials is glass. Even the early Egyptians used glass as containers. As a packaging material, glass is heavier than metal or plastic, but it remains a competitive substrate due to its long shelf life, premium feel and lighter weight. Glass beverage bottles have a high recyclability rate, and new glass bottles can be as high as 60-80% post-consumer material. When refillability is required, glass is often the first choice because of its ability to withstand high wash temperatures and multiple reuses.

Glass beverage packaging ranks high for its clarity and is an excellent barrier material. It is not affected by CO2 loss and oxygen intrusion, resulting in a package with a long shelf life.

New processing and coatings have improved the breakability of glass bottles. Significant lightweighting and strengthening technologies have made glass a more durable, consumer-friendly package. When it comes to packaging, shape retention is a key element of brand identity and consumer innovation. Glass is highly customizable and can maintain the shape it was formed into. The "cold feel" of a glass container is a feature beverage brand owners use to please consumers when they choose a refrigerated bottle.

Plastics
Did you know that the role of the expiration date on a plastic bottle is to ensure that the product meets the brand's requirements for taste and consistency? While the shelf life of a plastic bottle is long, it is shorter than that of a glass or metal container of the same size. However, improved processing techniques and barrier enhancements coupled with fast turnover rates have made the shelf life of the packaging sufficient for many applications.

Plastic beverage bottles are easy to form. For pressurized products such as soft drinks, packaging faces the challenge of maintaining the same shape under high internal pressure. But through innovation, processing techniques and material improvements, plastics can be formed into almost any shape even when pressurized.

Plastic bottles are very clear, lightweight, refillable, and have a high safety factor even if they are dropped. For plastics, recycling collection can be a limiting factor, but technology is improving to make plastics more recyclable.

Metal
Metal cans have unique properties when used for beverages. Metal ranks high in weight, recyclability, and safety. Unique shape retention and clarity are not among its strengths. New processing techniques allow cans to be formed, but these are costly and limited to smaller market applications.

Metal blocks light, retains CO2, and resists oxygen intrusion, giving your beverages a long shelf life. When it comes to keeping cold temperatures for consumers, metal cans are often the first choice.