Sourcing silicone release liner paper from China

Duty and classification for release liner paper

Heading 4811 covers coated, impregnated or covered paper and paperboard in rolls or rectangular sheets, subject to its stated exclusions. For silicone-coated release liners, describe the base paper, silicone coating and any plastic barrier layer. The table shows candidate tariff descriptions, not interchangeable classifications; the other-coated-paper line is repeated to show rolls and sheets.

Read from the UK Trade Tariff on 18 October 2026, all listed lines carried 0% duty for goods from China. The supplied tariff record lists no anti-dumping or countervailing duties, suspensions or attached import controls. This does not remove timber due diligence for virgin-fibre paper first placed on the GB market.

Give your broker the coating composition, layer structure, bleaching status, grammage and supplied format to confirm the commodity code. Plastic-coated descriptions are candidates only where the construction fits them. See the wider coated paper and board guide.

Specify the liner against your adhesive

Specify glassine or kraft base paper, virgin or recycled fibre, grammage and thickness tolerances, coated faces, silicone chemistry and any barrier coating. State reel width, core size, maximum reel diameter, winding direction and splice marking. Identify the release face clearly on samples and packing records.

Agree release-force acceptance criteria using your actual adhesive, peel method, conditioning and ageing conditions. Ask for coating cure and silicone-transfer results, then trial the liner on your converting line. For food-contact applications, request suitability evidence for the intended food, temperature and contact conditions.

The UK Timber Regulations cover paper products, but confirm with the relevant authority whether the proposed virgin-fibre paper is in scope and what fibre-source due diligence applies to the business first placing it on the GB market. Ask the mill for the pulp source, tree species and country of harvest; distinguish virgin fibre from recovered material.

Worked duty example

Illustrative example, not a quote: Illustrative order: 12 tonnes of silicone-coated release liner paper in rolls under 4811 90 00 90, invoiced at £14,000 free on board, with £1,800 of freight and insurance to the UK. The customs value is £15,800. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £15,800, so it is £3,160. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Release: compare peel behaviour across the reel width and after agreed ageing, using the specified adhesive; check for adhesive lift and silicone transfer.

Coating: inspect for bare patches, streaks and contamination; compare cure, coat coverage, grammage and thickness with the approved sample.

Reels: check width, core fit, winding direction, telescoping, edge damage and marked splices; check sheet flatness where supplied in sheets.

Records and packing: match reel identities to batch results and fibre-source records; check moisture protection and end protection. Use the quality inspection guide.

What goes wrong

A liner that peels cleanly with the factory's adhesive may release too tightly or too easily with yours. Uneven or poorly cured silicone can cause variable release or transfer onto the adhesive. Compare production samples with the approved liner using the same adhesive and test conditions.

Moisture variation can cause curl, while crushed cores, damaged edges and uneven winding disrupt converting. Agree packing and reel acceptance criteria before ordering, and check representative production reels before shipment.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.