GB/T 22638.7-2016 in English
VALIDTest methods for aluminium and aluminium alloy foils Part 7:Determination of heat seal strength
- Issued on:2016-12-30
- Implemented on:2017-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 22638.7-2016铝箔试验方法 第7部分：热封强度的测定》由TC243（全国有色金属标准化技术委员会）归口，TC243SC1（全国有色金属标准化技术委员会轻金属分会）执行，主管部门为中国有色金属工业协会。
Introduction
1. Standard background and scope of application
GB/T 22638.7—2016 is Part 7 of the "Aluminum Foil Test Methods", which mainly specifies the determination method of heat seal strength of aluminum foil for blister packaging. The standard is applicable to the determination of heat seal strength of aluminum foil adhesive layer for blister packaging made by bonding aluminum foil with hard sheets such as polyvinyl chloride (PVC) or polyvinylidene chloride (PVDC).
2. Comparison of standard frameworks
| Standard dimensions | Old version (GB/T 22638.7—2008) | New version (GB/T 22638.7—2016) |
|---|---|---|
| Scope of application | Solid medicines (tablets, capsules, etc.) | Aluminum foil for blister packaging |
| Reagents and materials | Normative references are not clearly listed | Normative references are added, and specific requirements for heat sealing adhesives, PVC and PVDC rigid sheets are clarified |
| Equipment requirements | The accuracy of the test cutter is not specified | The accuracy requirement of the tensile tester is added (level 1 or better) |
3. Implementation suggestions and precautions
Implementation suggestions:
- Ensure that the test equipment (such as tensile tester, heat sealer) meets the standard requirements and is calibrated regularly.
- Operators need to receive professional training and be familiar with the principles and steps of heat seal strength measurement.
- Prepare the specimens strictly in accordance with the standard requirements to ensure that the glue is evenly coated and free of contamination.
- Record the test conditions (such as temperature, pressure) and environmental factors (room temperature, humidity) to trace the causes of the difference in results.
Notes:
- During the heat sealing process, the sample should be kept away from moisture. It is recommended to operate in a dry environment.
- When recording the peeling load, pay attention to the unit conversion and numerical rounding rules (GB/T 8170).
- For aluminum foil rolls produced in large quantities, it is recommended to draw enough samples for testing according to the standard requirements.
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