GB/T 14745-2017 in English
VALIDTest method of creep properties for package cushioning material
- Issued on:2017-09-29
- Implemented on:2018-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 14745-2017包装用缓冲材料蠕变特性试验方法》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
Background and significance of standard formulation
GB/T 14745-2017 "Test method for creep characteristics of cushioning materials for packaging" is an important technical standard for the packaging industry, which aims to evaluate the deformation characteristics of cushioning materials under static compression load over time. This standard replaces the old version of the standard in 1993. The main modifications include the supplementation of term definitions, refinement of test equipment requirements, and optimization of test methods.
Test principle and equipment
The test is based on simulating static constant compression loads and characterizing creep characteristics by measuring the change of sample thickness over time. The core equipment is a test frame, including a rigid base plate and a movable pressure plate, equipped with precise measuring tools for continuous measurement.
| Standard comparison dimensions | GB/T 14745—2017 | GB/T 14745—1993 |
|---|---|---|
| Term definition | Newly added "creep" and "time-creep curve" | No clear definition of terms |
| Test equipment | Detailed requirements for test frame and counterweight | Equipment description is relatively brief |
| Test method | Introduction of time-creep curve drawing | Mainly based on static stress calculation |
Practical Application Case Analysis
Case 1:An electronic product packaging factory used this standard to test its cushioning materials. By controlling the temperature and humidity conditions and accurately measuring the thickness changes of the samples, the creep characteristics of the materials under different static stresses were effectively evaluated.
Technical Evolution Analysis
From 1993 to 2017, the GB/T 14745 standard has undergone a number of technical improvements. The main changes include the improvement of test equipment requirements, the optimization of test methods, and the innovation of data analysis methods. These improvements make the test results more accurate and more in line with the high quality requirements of the modern packaging industry.
Implementation Suggestions
In actual applications, enterprises should:
- Strictly select test equipment and measuring tools in accordance with the requirements of the standard;
- Ensure that the sample pretreatment conditions meet the requirements;
- Adjust the measurement time interval according to specific needs to ensure the comprehensiveness of the data;
- Establish a complete test report system for quality traceability.
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