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Film Grammage Test
2025-11-04
1. Tools Needed: Electronic balance, cutting knife, 10×10 cm template, ruler.
2. Sampling: Take samples randomly from different positions of the film roll, avoiding edges or wrinkled areas.
3. Cutting: Cut the sample into 10 cm × 10 cm (area = 0.01 m²).
4. Weighing: Weigh the sample accurately and record the weight in grams (g).
5. Calculation:
Example: If the sample weighs 0.25 g → grammage = 25g/m².
6. Comparison: Compare the result with the product specification. Acceptable deviation is usually within ±3%.
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