Why choose PP bottles to fill drinks?
Release time:
2025-09-09
Choosing PP bottles (polypropylene bottles) for beverage filling is a very common and wise choice, as it strikes an excellent balance between cost, performance, safety, and environmental protection.
The following are the core values of PP bottle-filled beverages, which we can analyze in depth from several dimensions:
1. Safety and hygiene value: the cornerstone of ensuring beverage quality
· Non-toxic and harmless: PP (polypropylene) is an FDA-approved material suitable for food contact, containing no harmful substances (such as BPA/bisphenol A). It is safe and non-toxic to humans, making it highly suitable for packaging ready-to-drink liquids.
· High chemical stability: It exhibits good resistance to most acids, alkalis, alcohols, and oils, and is less prone to react chemically with the contents of beverages, ensuring the original flavor and quality of the beverage.
· Easy to disinfect: PP material can withstand high-temperature disinfection (such as hot filling and pasteurization) without deforming or releasing harmful substances due to high temperatures, meeting the hygiene requirements of beverage production.
2. Performance and functional value: meeting diverse filling requirements
· Excellent heat resistance: This is one of the most prominent advantages of PP bottles. With a melting point of over 160°C, they can withstand the temperature of high-temperature hot filling (such as tea, juice, and functional beverages) (typically 85°C-95°C), which is difficult for PET bottles to achieve. Hot filling can effectively sterilize and extend the shelf life.
· Excellent barrier properties: Although polypropylene (PP) is not as good as glass in terms of oxygen barrier, it excels in water vapor barrier, effectively preventing moisture loss from beverages. For beverages that do not require an extremely long shelf life, its barrier properties are sufficient.
· Certain rigidity and lightweight: PP bottles are harder than PE (polyethylene) bottles, providing good support and resisting collapse. At the same time, they are much lighter in weight than glass bottles, reducing transportation costs and the risk of breakage.
3. Cost and efficiency value: Enhancing production economic benefits
Low raw material cost: PP is a bulk product in the petrochemical industry, with stable sources of raw materials, relatively low prices, and minimal fluctuations, which is conducive to controlling packaging costs.
High production efficiency: PP bottles are highly suitable for "one-step" injection blow molding, which completes the entire process from plastic granules to finished bottles on a single machine. This process offers high production efficiency and low energy consumption, making it ideal for large-scale, continuous beverage production lines.
Low transportation cost: Due to its light weight and the ability to be stacked for transportation (such as bottle preforms), it can significantly save logistics and storage space compared to glass bottles, reducing overall costs.
4. Appearance and design value: Assisting in shaping brand image
· Translucent to milky white appearance: PP bottles are usually translucent or milky white, with a gentle texture that gives a sense of purity and softness. Full transparency can also be achieved through modification, but the cost will increase.
· Flexible design: It is easy to produce bottles of various shapes and specifications through blow molding, meeting the personalized design needs of different brands for bottle body shapes, making it easy to stand out on the shelf.
· Good compatibility with printing and labeling: The surface of the bottle body is suitable for silk screening, labeling, or shrink labeling, which can effectively display brand information and product selling points.
5. Environmental protection and sustainable value: Adhering to the green development trend
· Recyclable: PP, a type of plastic labeled as No. 5, is a recyclable material. It aligns with the global trend of plastic recycling, aiding brand owners in fulfilling their environmental social responsibility and enhancing their brand image.
· Durable and reusable: Its robust and durable characteristics make PP bottles very suitable for making reusable water cups, sports bottles, etc., extending the product's life cycle and reducing waste.