Sourcing polylactic acid staple fibre from China

UK duty and classification

Heading 5503 covers synthetic staple fibres not carded, combed or otherwise processed for spinning. For polylactic acid fibre, ask your broker to check the polyester line, 5503 20 00 00, against the declared polymer composition. The table shows applications of that candidate line, rather than separate tariff subdivisions.

Read from the UK Trade Tariff on 1 October 2026, all supplied lines carried 0% duty for goods from China. The supplied facts list no anti-dumping or countervailing measures, suspensions or attached import controls. These tariff findings do not establish suitability for the intended finished product.

Confirm the commodity code before ordering, especially for blends or fibre already processed for spinning. See the wider staple fibre guide for the heading and the duty and VAT guide for import costing.

Specify the polymer and processing behaviour

State whether you want pure polylactic acid fibre or a blend, and identify every other polymer. Agree fibre fineness, cut length, crimp, strength, elongation, colour, moisture acceptance and finish. Ask the factory to identify the resin grade and disclose additives and surface treatments.

For spinning or nonwoven manufacture, approve a sample on your own equipment. Agree the processing temperature window and check shrinkage, carding behaviour and bonding performance where relevant. Keep an approved sample and require agreement before resin or finish changes.

Retailers should obtain robust, credible and current evidence for environmental claims. Ask for reports covering the supplied fibre and check whether biodegradability or compostability claims concern particular components or conditions. For domestic upholstered furniture filling, confirm applicable ignitability testing requirements with Trading Standards, using the wider guide as background.

Worked duty example

Illustrative example, not a quote: A baled polylactic acid staple fibre trial lot for a small converter, illustrative under 5503 20 00 00, invoiced at £16,000 free on board, with £1,200 of freight and insurance to the UK. The customs value is £17,200. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £17,200, so it is £3,440. 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

Identity: check the declared polymer composition, resin grade and finish against the approved sample and batch documents.

Fibre: sample across bales and compare fineness, cut length, crimp, strength and contamination with the specification.

Processing: repeat the agreed carding, spinning or bonding trial and compare shrinkage and finished material performance.

Bales: check net weight, moisture, wrapping, batch identification, odour and signs of water damage.

What goes wrong

A substituted resin or changed finish can make the bulk fibre behave differently from the approved sample. Uneven cut length causes feeding problems, while unexpected shrinkage or bonding behaviour spoils the finished web. Damp bales and foreign fibres make acceptance harder.

A generic compostability report may cover a different formulation or test environment. Match the report to the supplied material and proposed claim, then assess the finished blend separately. Agree sample retention and shipment checks through the quality inspection guide.

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.