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Product Description

Temperature Guide for PET Cups: Why They Are Engineered for Cold Drinks

PET (Polyethylene Terephthalate) is specifically engineered as a Cold Beverage Solution. Understanding the thermal properties of PET is essential to using it safely and effectively. While it is the champion of the cold drink world, it has specific temperature limits that must be respected to maintain the integrity of the cup.

The Ideal Temperature Range: Our PET cups are designed to perform perfectly between -20°C and 60°C (-4°F to 140°F).

Freezing: PET is excellent for frozen treats. It does not become brittle at freezing temperatures, making it ideal for ice cream, frozen yogurt, and slushies.

Room Temperature: Perfect for sodas, water, and juices.

Cold Drink Solution
PET Cup Display

Why Not Hot Drinks?

PET has a relatively low glass transition temperature. If you pour hot coffee or tea (typically served at 80°C-90°C) directly into a PET cup, it will warp, shrink, and deform almost instantly. This is not a defect; it is a characteristic of the material. For hot beverages, we recommend paper cups or PP cups.

Best Practices

Store in Cool Places: Avoid storing cartons of PET cups in direct sunlight or hot shipping containers for extended periods to prevent warping.

Cool Before Pouring: If brewing fresh tea for iced tea, ensure the liquid is cooled or poured over plenty of ice before it hits the cup.

By using PET for its intended purpose—cold, frozen, and ambient temperature drinks—you get the best performance, clarity, and safety available on the market.
PET Product Detail 1
PET Product Detail 2
PET Packaging Overview

Frequently Asked Questions

1. What is the maximum temperature a PET cup can handle?
PET cups are designed to withstand temperatures up to 60°C (140°F). Exceeding this limit will cause the material to warp or deform.
2. Can I use PET cups for hot coffee or tea?
No, PET cups are not suitable for hot beverages served at 80°C-90°C. For hot drinks, it is recommended to use PP (Polypropylene) or paper cups.
3. Are PET cups safe for freezing temperatures?
Yes, PET is excellent for cold storage and freezing. It remains durable and does not become brittle at temperatures as low as -20°C (-4°F).
4. Why did my PET cup shrink when I poured liquid in it?
This usually happens if the liquid is too hot. PET has a low glass transition temperature, causing it to lose its shape instantly when exposed to high heat.
5. How should I store bulk PET cup inventory?
Store them in a cool, dry environment away from direct sunlight. High-temperature storage areas, such as hot shipping containers, can lead to product deformation.
6. Can I use PET cups for iced tea that was just brewed?
You should allow the tea to cool down or pour it over a significant amount of ice first to ensure the temperature is below 60°C before it contacts the PET material.

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