GB/T 16266-2019 in English
VALIDTest method of packaging materials—Contact corrosion
- Issued on:2019-10-18
- Implemented on:2020-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 16266-2019包装材料试验方法 接触腐蚀》由TC49（全国包装标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Interpretation of GB/T 16266—2019 Contact Corrosion Test Method for Packaging Materials
| Standard Dimensions | Requirements of the 2008 Edition | Modifications of the 2019 Edition |
|---|---|---|
| Terms and Definitions | Includes detailed term explanations (Chapter 3) | Deleted the term and definition section |
| Test Environmental Conditions | Not clearly required | Added test environmental temperature range (20°C~30°C) and humidity not exceeding 80% |
| Dryer Dimensions | Not clearly specified | The inner diameter of the body is required to be 240mm |
Background of standard formulation and analysis of technological evolution
Background: With the development of the packaging industry, the problem of contact corrosion of materials on metal surfaces has become increasingly prominent. The GB/T 16266 series of standards aims to provide scientific and unified test methods for packaging materials to evaluate their impact on metal surfaces.
Technological evolution: From 1996 to 2019, the standard has undergone several revisions, and the main improvements include:
- Added environmental condition control to ensure the repeatability of experimental results
- Refined the test piece preparation and cleaning requirements to reduce human errors
- Optimized the test method for granular materials and improved operational standardization
Instrument and reagent requirements
Key instruments: Electric blower drying oven (Model: GB/T 30435), dryer (Specification: GB/T15723, inner diameter 240mm), hair dryer (hot and cold dual-purpose).
Sample Preparation Specifications
| Material Type | Specimen Size Requirements | Specimen Size Requirements | Special Instructions |
|---|---|---|---|
| Flexible Sheet | 75mm×50mm | If the sample is insufficient, multiple samples need to be spliced | |
| Hard or Block Material | 75mm×50mm | Thickness not exceeding 10mm | |
| Granular Material | - | Need to be ground to between 40 mesh and 80 mesh |
Implementation Suggestions
Operational recommendations:
- Strictly control environmental conditions in accordance with standard requirements (temperature 20-30°C, humidity ≤80%)
- Avoid bare hand contact during specimen preparation
- Granular materials must be spread evenly to ensure appropriate coverage
Result evaluation:Refer to Appendix A and classify the results from 0 to 5 levels according to the degree of corrosion. If the difference in the three parallel tests does not exceed one level, take two pieces of the same level for classification.
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