How canvas and textile shoes are made
The classic canvas plimsoll or sneaker is vulcanised. The canvas upper is cut, printed or embroidered, stitched and lasted onto an insole. Unvulcanised rubber parts are then applied by hand: the outsole, a rubber toe cap, and a strip of foxing tape that wraps round the side of the shoe and covers the joint between upper and sole. The whole shoe, still on the last, goes into an autoclave, where heat and pressure cure the rubber and bond it to the canvas.
Because the rubber is applied by hand and cured in one batch, the result depends on careful application of cement, accurate placement of the foxing, and correct curing time and temperature. Under-cured rubber stays soft and sticky; over-cured rubber turns brittle.
Other textile shoes are cemented rather than vulcanised: slip-ons and ballet flats with a fabric upper and a glued sole, and espadrilles, where a canvas upper is hand-stitched to a sole of braided jute rope, often with a thin rubber layer underneath. Exports of other textile-upper footwear with rubber or plastic soles (HS 640419) were US$162.52 million in FY2025-26 (Department of Commerce, TradeStat, provisional).
What we check on canvas and textile shoes
| Check | How it is checked | What fails |
|---|---|---|
| Foxing tape adhesion | Foxing edge pressed and lifted with a fingernail all round, especially at the toe and heel joins | Foxing lifting, gaps at the join, overlapping ends not sealed |
| Toe cap | Rubber toe cap pressed and flexed; edge against the canvas | Toe cap lifting or bubbling |
| Rubber cure | Sole surface checked for tackiness and flexed for cracks | Sticky soles (under-cured) or cracking (over-cured) |
| Stains on canvas | Light canvas inspected in a light box for rubber smears, cement and handling marks | Grey rubber marks, yellow cement stains, dirty fingerprints |
| Colour and print | Damp and dry white cloth rubbed on dyed and printed canvas; print position and registration on both shoes | Colour or print rubbing off, print misaligned between left and right |
| Fabric | Canvas weight and weave against the sample; seams and stitch density | Thinner canvas, slubs or holes, open seams |
| Eyelets and laces | Eyelets checked for rust and sharp edges; lace length per size | Rusting or loose eyelets, short laces |
| Espadrille soles | Jute braid tightness, stitching to the upper, rubber layer bond, moisture and smell | Loose braid, stitching gaps, damp or mouldy jute |
Common canvas and textile shoe defects and how they are classed
| Defect | Typical cause | Class |
|---|---|---|
| Mould on jute soles or canvas | Damp storage, packing before goods are dry | Critical or major, by extent |
| Foxing or toe cap lifting | Too little cement, contamination, short cure | Major |
| Sticky or cracking rubber | Wrong curing time or temperature | Major |
| Rubber or cement stains on white or light canvas | Dirty hands and tools during rubber application | Major or minor, by size and position |
| Print rubbing off | Ink not cured, wrong ink for canvas | Major |
| Rusting eyelets | Uncoated steel eyelets, humidity | Major |
| Uneven foxing height | Hand placement off the guide line | Minor |
| Loose thread ends | Poor trimming | Minor |
Your defect list decides the final class.
Market rules for canvas and textile shoes
- Material label (EU and UK). Canvas is textile and a vulcanised rubber sole is "other materials" under the four categories in Directive 94/11/EC (leather, coated leather, textile, other). For an espadrille, agree with your compliance adviser how the jute rope sole is declared. If a shoe has a canvas upper with a leather trim covering under 20% of it, textile alone can be shown. The UK applies the same rule through its 1995 regulations.
- Azo dyes and CMR substances (EU). Dyed canvas in skin contact must not release listed amines above 30 mg/kg (REACH entry 43). Entry 72 also sets limits for CMR substances, including some dyes and formaldehyde, in clothing, footwear and similar textiles. See azo dyes and restricted substances.
- PAHs (EU). Rubber parts in skin contact, such as the inside of the toe cap or an exposed rubber insole, fall under REACH entry 50. See REACH.
- Children's sizes (US). Canvas shoes for children 12 and under are children's products under the CPSIA. Dyed textile fibres are exempt from lead testing but metal eyelets and printed inks are not. See CPSIA.
- Organic cotton claims. A "GOTS" or organic claim needs a valid certificate for the canvas; see OEKO-TEX and GOTS.
Packing, transit and your purchase order
Light canvas picks up dust and fingerprints easily, so pairs are usually bagged or wrapped before boxing. Freshly vulcanised rubber continues to give off a smell for some days; boxing too soon traps it. Espadrilles must be dry before packing, because jute absorbs moisture and goes mouldy in a closed container. The inspector checks moisture and smell, box labels and carton strength.
Put these in your purchase order:
- Canvas type, weight and colour; print or embroidery artwork and position.
- Vulcanised or cemented construction; foxing height and colour; toe cap design.
- Colour fastness requirement for dyed and printed canvas; washability claim, if any, and how it is tested.
- Eyelet material and finish; lace length per size.
- Insole and lining specification.
- Material label and origin marking; pack method and carton marking.
For the canvas fabric itself, see finished and printed fabric inspection. Book an inspection anywhere in India.
Sources
- Department of Commerce, TradeStat: commodity-wise exports (HS 640419, FY2025-26 provisional)
- Directive 94/11/EC on the labelling of materials used in footwear (EUR-Lex)
- Your Europe: Footwear labelling
- Commission Regulation (EU) 2018/1513, REACH Annex XVII entry 72 CMR substances (EUR-Lex)
- ECHA: Substances restricted under REACH (Annex XVII)