ISO 22982-2:2021 pdf download – Transport Packaging — Temperature controlled transport packages for parcel shipping — Part 2: General specifications of testing.
4.2 Physical performance test of a package Physical performance test of packages shall be performed in accordance with test methods specified in ISO 4180. 4.3 Thermal performance test of a package 4.3.1 Setting temperature conditions 4.3.1.1 Outside atmosphere temperature An environmental chamber that can consistently maintain the determined outside temperature shall be used. The environmental chamber shall be pre-cooled or pre-heated to the intended temperature condition before the test. Air velocity of the chamber should be uniform and is recommended to be controlled between 0,1 m/s and 2 m/s. Depending on the circumstances, the outside atmosphere temperature shall be determined either by temperature profiles collected from recorded data or pre-determined temperatures set by stakeholders. Clause A.1 gives examples of temperature profiles expressed at different seasons, e.g. summer, winter and spring/autumn. The predetermined temperatures shown in A.2 may be used, e.g. −30 °C ±1 °C, 23 °C ± 1 °C, 40 °C ± 1 °C, etc. Temperature shall be constant within testing periods depending on the parcel delivery duration, e.g. 24 h, 48 h and 72 h. 4.3.1.2 Inside atmosphere temperature When no refrigerant or phase change material is used, temperature changes inside a package can demonstrate the performance of thermal resistance. The following are three types of applications that use refrigerants or phase change materials: a) phase change material, cold water or ice above 10 °C ± 1 °C; b) solid CO 2 that can maintain temperature down to −78,5 °C ± 1 °C (dry ice or eutectic system); c) liquid nitrogen that can maintain temperature down to −195,79 °C ± 1 °C. Commercial parcel shipping usually takes the form of a) or b).
4.3.3 Testing insulation performance of a package 4.3.3.1 General This test is to measure insulation performance of temperature-controlled packages based on existing or predicted parcel shipping temperature profiles. 4.3.3.2 Insulation performance test conditions The conditions for insulation performance tests are as follows: a) test in a chamber that is not influenced by direct sunlight, heat sources and can maintain and adjust temperature with less than or equal to ±1 °C during the measurement period; b) preheat or pre-cool the package until the inside temperature is stabilized; c) measure the temperature every 10 min; d) mark the measurement temperature as the mean value of measurement points inside the chamber (package outside) and the package inside respectively; and e) equalize the inside temperature of the package.