The temperature and pressure tolerance of PP (Polypropylene) cream jars can be derived from the properties of the PP material. Below is a detailed answer regarding the temperature and pressure limits of PP cream jars:
Temperature:
- Heat Resistance Range:
Polypropylene (PP) is a semi-crystalline thermoplastic with excellent heat resistance. Under normal conditions, its heat resistance range is between 100°C and 120°C. This means that PP cream jars can remain stable and will not deform or get damaged within this temperature range.
- Actual Use Temperature:
Although PP can withstand temperatures up to 120°C, it's recommended not to use PP cream jars near or above this limit for safety and stability reasons. Therefore, in practical use, the temperature should be kept below or equal to 100°C.
Pressure:
- Working Pressure:
PP cream jars are designed to function under normal atmospheric pressure. This means that during regular use, they are not required to endure additional pressure.
- Pressure Strength:
While the exact pressure tolerance of PP cream jars is not specified, considering that PP material has good toughness and chemical resistance, it can be inferred that the jars can handle minor pressure changes that may occur during daily use at normal atmospheric pressure.
Summary:
- Temperature: PP cream jars can withstand temperatures up to 100°C. To ensure safety and stability, it's advised not to use them at temperatures close to or above this limit.
- Pressure: PP cream jars are designed for normal atmospheric pressure and have enough pressure strength to handle minor pressure changes during regular use.