Commercially significant printing determines tariff classification when it is primary, not incidental, to the product's identity and use.

Printing on plain plastic films that conveys product description, brand particulars, batch number, weight and date of manufacture is not merely incidental when it performs a commercially significant function for the buyer. Chapter Note 10 to Chapter 39 applies only where printing remains subordinate to the primary character of the goods; once the printing contributes to the article's commercial identity and use, the goods cease to be classifiable as plain printed plastic sheets under Chapter 39 and must be classified according to the tariff entry for the printed article. On this reasoning, the classification under Chapter 49 was treated as correct.

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Issues: Whether printing on plain plastic films was merely incidental so as to retain classification under Chapter 39, or whether the printing was of a primary nature requiring classification under Chapter 49.

Analysis: The plastic films were printed with details such as the product description, brand particulars, batch number, weight and date of manufacture, enabling the buyer to decide whether to purchase the goods. Such printing was not confined to decorative or incidental matter. Chapter Note 10 to Chapter 39 applies only where printing remains incidental to the primary use of the goods. Where the printing contributes a substantive element to the product's commercial identity and use, the section note assumes precedence and the goods cease to remain classifiable as mere printed plastic sheets under Chapter 39.

Conclusion: The printing was of primary nature and not incidental. Classification was correctly held to fall under Chapter 49, and the appeal by the department failed.

Ratio Decidendi: Where printing on a product is intended to convey commercially significant information that influences the buyer's decision, the printing is not incidental and classification must follow the tariff entry applicable to the printed article rather than the unprinted base material.

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