GB/T 33399-2016 in English
VALIDOptical functional films-Polyethylene terephthalate(PET) film- Determination of thickness
- Issued on:2016-12-30
- Implemented on:2017-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 33399-2016光学功能薄膜 聚对苯二甲酸乙二醇酯（PET）薄膜 厚度测定方法》由TC431（全国光学功能薄膜材料标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
Introduction
Interpretation of GB/T 33399-2016 National Standard of the People's Republic of China
Standard Name:Measurement Method of Thickness of Polyethylene Terephthalate (PET) Film with Optical Function
Scope of Application:This standard is applicable to the determination of the thickness of polyethylene terephthalate (PET) film with optical function by mechanical measurement.
1. Analysis of Standard Formulation Background and Technology Evolution
PET (polyethylene terephthalate) film has been widely used in electronics, optoelectronics and other fields due to its excellent optical and mechanical properties. With the advancement of science and technology, the application scenarios of films are constantly expanding, which puts forward higher requirements for the accuracy and reliability of thickness measurement. The formulation of this standard aims to standardize the determination method of PET film thickness and ensure the consistency and traceability of product quality.
2. Standard framework comparison table
| Standard dimension | GB/T 33399—2016 | International standard correspondence | Industry standard differences |
|---|---|---|---|
| Scope of application | Measurement of optical functional PET film thickness | ISO/TC 105 corresponding standard | - |
| Measurement accuracy | ≤100μm accuracy is 1μm, 100-250μm accuracy is 2μm, ≥250μm accuracy is 3μm | ISO standard accuracy requirements | - |
| Measurement Method | Mechanical Thickness Measurement Method | International General Method | - |
3. Professional Terminology Explanation and Practical Application Cases
Term 1:Mechanical Thickness Measuring Instrument - a precision instrument used to measure the thickness of a film, which measures the thickness through contact pressure and optical projection principles.
Practical Application:An electronic manufacturing company uses a mechanical thickness measuring instrument to perform batch inspections on PET films to ensure that the products meet the tolerance requirements of ±2μm and to ensure the quality stability of downstream optoelectronic equipment.
4. Measuring instruments and technical requirements
Accuracy requirements:The accuracy of mechanical thickness gauges varies according to different thickness ranges: 1μm for less than 100μm, 2μm for 100-250μm, and 3μm for more than 250μm.
Requirements for measuring surface:The measuring surface must meet the geometric conditions of plane/plane or convex/plane, and ensure surface polishing and flatness. The diameter of the lower measuring surface should be between 2.5mm and 10mm, and the non-parallelism between the two planes should be less than 3μm.
5. Implementation suggestions
Operation specifications:Before measuring thickness, ensure that the sample is balanced in a standard environment for at least 2 hours, and adjust the environmental conditions to 23℃±2℃ and relative humidity 50%±5% according to GB/T 2918. At the same time, keep the measuring instrument clean and calibrated.
Data processing: Record all measured thickness values and calculate the maximum, minimum, deviation and average value to fully reflect the consistency of film thickness.
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