The evaluation of insulated stainless steel beverage containers, encompassing a variety of items like bulk-bought water bottles and stainless steel tumblers, as well as thermos cups, vacuum flasks, customized can insulators, insulated sealing vessels, food storage units, and pet bowls, hinges on their ability to cope with fluctuating storage, transport, and usage conditions spanning different climate zones. This high-low temperature test procedure gauges the performances of insulated stainless steel water bottles when subjected to significant thermal extremes for certain periods. The severity of these tests is adjusted in accordance with specific temperature extremes and durations of exposure. At DIOBAO, our bespoke stainless steel drinkware fabrication is meticulously tested to ensure enduring quality and functionality in harsh temperature settings.
Thermal Bounds: -40°C to 150°C
Moisture Bounds: 20% to 98% RH
Queries on High-Low Thermal Testing for Stainless Drinkware
- Defining the High-Low Temperature Test for Stainless Steel Drinkware
The high-low temperature assessment is an indispensable process that probes the resilience of stainless steel drinkware under varied thermal stress. This assessment is critical for items like water bottles, thermos cups, and food containers throughout their lifespan, from storage to actual use. Its core purpose is to verify the performance and hardiness of these containers under intense thermal conditions, thus certifying their dependability for customers. - Analyzing High-Low Temperature Test Approaches
**Heat Transfer Characterization:**
Drinkware is categorized via their heat-release potential—those that maintain a temperature over 5°C above their surroundings after stabilization are tagged as heat-releasing; otherwise, they’re labeled non-heat-releasing. This distinction is vital during both non-operational and operational phases.
**Sudden vs. Gradual Thermal Shifts:**
A rapid thermal shift thrusts the item into a pre-set test room, while a gradual shift test starts at room temperature and then slowly escalates. Quick changes are favored unless they compromise sample integrity, in which case the gradual method is employed.
**Forced vs. Passive Air Flow:**
For non-heat-releasing scenarios, forced airflow is suggested to maximize thermal exchange, whereas passive air circulation suffices for heat-releasing circumstances, unless it falls short of the test protocols.
At DIOBO a stringent combination of abrupt and mild thermal shift evaluations is performed to guarantee top-tier product quality.
- Instrumentation and Settings for Thermal Evaluation
High-temperature assessments use constant temperature environments, where heat distribution is critical, and low-temperature evaluations take place in artificial cooling conditions with forced airflow for uniformity. DIOBAO pioneered these methodologies, closely simulating real-world conditions to deliver trustworthy data on drinkware performance at extremes.
| Test Type | Test Procedure | Judgment Criteria |
| Thermal Shock – Endurance Test | Step 1: Place the stainless steel water bottle in a -10°C (14°F) low-temperature environment for 15 minutes to freeze.Step 2: Transfer to an oven set at a warm environment temperature of 70°C (158°F) for 15 minutes.Step 3: Repeat for 10 cycles.Step 4: Place the sample water bottle at room temperature between 20°C (68°F) and 25°C (77°F) for 30 minutes, then conduct one round of airtightness test. | The stainless steel water bottle’s insulation performance must remain normal; components such as lids, straws, and handles should function properly; there should be no apparent changes in the stainless steel water bottle’s appearance. |
| Extreme Low Temperature & Humidity Test | Step 1: 24 hours at 54°C with 95% relative humidity.Step 2: 24 hours at 54°C with 30% relative humidity.Step 3: 24 hours at 0°C. | The stainless steel water bottle’s insulation performance must remain normal; components such as lids, straws, and handles should function properly; there should be no apparent changes in the sample water bottle’s appearance. |
4.Following exposure to the high-low temperature test, stainless steel water bottles and tumblers are evaluated against essential benchmarks. These standards are vital for products that have agreed to meet specific performance thresholds in the face of temperature extremes:
- Surface Integrity: Post-test, the drinkware’s exterior should show no adverse effects. For decorated surfaces, whether painted, powder-coated, or printed, the finish must remain flawless, without peeling, blistering, or color fading.
- Lid Quality: Plastic components such as lids should withstand the test without developing cracks, blistering, or warping.
- Seal Durability: Silicone seals are expected to resist aging effects like sticking, softening, or tearing.
- Welding Soundness: Welded joints, like those connecting the bottom of the bottle, must be free from fractures.
- Performance and Structure: The product’s insulative properties and overall structure should conform to predetermined criteria, maintaining operational integrity without functional impairment.
Meeting these post-test requirements is foundational for DIOBAO commitment to durable, dependable, and visually appealing stainless steel drinkware that retains its quality through various temperatures. These checks play a pivotal role in sustaining consumer confidence and reinforcing the long-term usability and performance of our products.