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Disposable injection molded plastic coffee cups are one of the common items in our daily life. Due to its convenience and low cost, it is widely used in various places such as cafes, fast food restaurants and offices. However, we must be aware of the limitations of disposable injection molded plastic coffee cups, that is, they are not heat resistant. This means that we cannot use them to hold hot drinks and boiling water drinks. The reason is that if they are exposed to high temperature environments, it may cause the cups to deform, melt, and even produce toxic substances.
Disposable injection molded plastic coffee cups are usually made of polystyrene (PS). This plastic has the characteristics of low cost, light weight and easy processing, so it is widely used in production. However, polystyrene has the limitation of low heat resistance, and its melting point is around 70 degrees Celsius. Once this temperature is exceeded, the plastic cup will inevitably begin to deform or even melt.
When we pour hot liquid into a disposable injection plastic Coffee cup, its surface temperature will rise. Although the temperature rises rapidly in a short period of time, the internal temperature of the cup is relatively low. However, when we continue to pour hot liquid into the cup, the internal temperature will also gradually increase, approaching or exceeding the heat resistance temperature of the plastic. Once this temperature is reached, the structure of the coffee cup will become loose, leading to deformation. If it continues to be exposed to a high temperature environment, the cup may start to melt and release harmful substances.
In addition to deformation and melting, disposable injection molded plastic cups also pose other risks, especially during use. In a high temperature environment, the chemical composition of the plastic cup may change, thereby producing toxic substances. These substances may contaminate our drinks and pose potential hazards to our health.
In view of the above risks, we should take some preventive measures. First, we can choose to use cups made of other materials to hold hot liquids, such as glass or ceramic cups. These materials usually have higher heat resistance and are not easily affected by high temperatures. Secondly, if we do need to use disposable injection molded plastic coffee cups, we can choose cold drinks to avoid pouring boiling water or very hot drinks into them. Finally, using cup sleeves or paper cup sleeves and other protective measures can also reduce the direct contact of the coffee cup with heat, reducing the probability of it being affected by high temperature.
The heat resistance of disposable injection molded plastic coffee cups under high temperature conditions must be value it. Understanding the limitations of the cup and taking appropriate preventive measures can ensure our health and safety.
