Excise duty on polymer waste turns on when yarn manufacture begins and whether waste is tied to that process.

Item 18(IV) of the central excise tariff covered only waste arising in, or in relation to, the manufacture of man-made fibres and filament yarn. Waste generated before polymer chips came into existence was treated as arising in the manufacture of a separate marketable commodity, so it was not dutiable under that entry. Waste arising after the chip stage, once extrusion had commenced the yarn-making process, fell within the wide phrase "in or in relation to manufacture" and remained liable to duty even before the final stretching stage. Earlier trade notices could not override the amended tariff language. The result was mixed: pre-chip waste was excluded, but post-chip waste was dutiable.

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Issues: (i) whether waste arising up to the stage of polymer chips was covered by Item 18(IV) and liable to central excise duty; (ii) whether waste arising after the chip stage and before the stretching stage was covered by Item 18(IV) and liable to central excise duty.

Issue (i): whether waste arising up to the stage of polymer chips was covered by Item 18(IV) and liable to central excise duty.

Analysis: Item 18(IV) covers only waste arising in, or in relation to, the manufacture of man-made fibres and man-made filament yarn. Waste generated before polymer chips came into existence was held to arise in the manufacture of polymer chips, which were treated as a separate commodity known to the market. Such waste was not regarded as waste arising in or in relation to the manufacture of yarn.

Conclusion: Waste arising up to the stage of polymer chips was not liable to duty under Item 18(IV), and this issue was decided in favour of the assessee.

Issue (ii): whether waste arising after the chip stage and before the stretching stage was covered by Item 18(IV) and liable to central excise duty.

Analysis: The process from extrusion onwards was treated as the commencement of manufacture of man-made filament yarn. The Court held that the expression "in or in relation to the manufacture" was wide enough to include intermediary stages after extrusion, even if the product had not yet reached the final stretching stage. Earlier trade notices could not control the tariff entry as amended.

Conclusion: Waste arising after the chip stage and before the stretching stage was liable to duty under Item 18(IV), and this issue was decided in favour of the Revenue.

Final Conclusion: The appeals failed overall because the refund claim was untenable for waste arising after the chip stage, while the departmental challenge to the exclusion of pre-chip waste also failed.

Ratio Decidendi: Under a tariff entry covering waste arising in or in relation to the manufacture of man-made filament yarn, waste generated after the commencement of the yarn-making process is dutiable even if it arises at intermediary stages, but waste attributable to an earlier distinct manufacturing stage is not covered.

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