4
How many flutes are there in Type A corrugated fibre board?
EXPLANATION
Food Packaging Materials
- Corrugated Fibreboard Flute Geometry:
- Type A Flute Specifications:
- Features approximately $32 - 38$ flutes per linear foot ($105 - 125\text{ flutes/m}$) and a flute height of $4.5 - 4.8\text{ mm}$.
- Offers the greatest vertical crush resistance and cushioning protection among standard paperboard flutes.
- (Type B has $47 - 53\text{ flutes/ft}$, Type C has $39 - 45\text{ flutes/ft}$, Type E has $90 - 100\text{ flutes/ft}$).
- Conclusion: 32-38 (Option 4).
Correct option: (4) 32.38
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