What’s the Difference Between Milk Bottle Materials? A Simple Guide for Parent

November 12, 2024

Choosing a milk bottle is more than just picking a shape or brand. The material plays an important role in durability, safety, and how long the bottle will last with daily use.

Below is a simple breakdown of the four most common milk bottle materials—PP, PPSU, Glass, and T-Ester—including their key characteristics and suggested lifespan to help parents make informed choices.

市面上的奶瓶材质五花八门，从 PPSU、玻璃 (Glass)、硅胶 (Silicone) 到 PP 和 T-Ester，常让新手父母挑得眼花缭乱。究竟哪种材质最耐高温？哪种既轻便又防摔？

挑选合适的奶瓶不仅关乎宝宝的喂养舒适度，更直接影响日常清洗与消毒的便利性。本文为您全方位拆解各种常见奶瓶材质的优缺点、耐用度与适用场景，陪伴大马新手爸妈轻松选出最安全、最适合自家宝宝的“奶瓶神队友”！

1. PP (Polypropylene)

PP is one of the most widely used milk bottle materials, especially for newborns and short-term use.

Key characteristics:

Lightweight and affordable
Semi-transparent or cloudy appearance
BPA-free and easy to find

Suggested lifespan:
3–6 months, depending on frequency of use and sterilisation. Replace once the bottle becomes cloudy, scratched, or shows signs of wear.

Best for:
Parents looking for a budget-friendly option or temporary bottle use.

2. PPSU (Polyphenylsulfone)

PPSU is considered a premium plastic material known for its strength and heat resistance.

Key characteristics:

Amber or honey-coloured appearance
Very high heat resistance
Durable and suitable for frequent sterilisation

Suggested lifespan:
12–24 months with proper use. PPSU bottles maintain shape and strength longer than standard plastic bottles.

Best for:
Parents who want a long-lasting, durable bottle for everyday feeding.

3. Glass

Glass bottles are valued for their purity and non-porous surface.

Key characteristics:

Made from heat-resistant glass
Does not absorb stains or odours
Smooth surface that stays hygienic over time

Suggested lifespan:
2–3 years or longer if not damaged. Replace immediately if cracked or chipped.

Best for:
Parents who prefer a natural material and mostly use bottles at home.

4. T-Ester (Copolyester)

T-Ester is a modern material designed to offer clarity and safety without the fragility of glass.

Key characteristics:

Crystal-clear, glass-like appearance
Lightweight and shatter-resistant
Free from BPA, BPS, and BPF

Suggested lifespan:
6–12 months, depending on usage and heat exposure.

Best for:
Parents who want a clear, modern-looking bottle that is lighter than glass.

*A Gentle Closing Thought

There is no single “best” milk bottle material—only what fits your baby’s needs and your lifestyle. Some parents rotate materials for different settings, while others stick to one trusted option.

Understanding the differences allows you to choose with confidence, knowing when it’s time to replace and refresh.