What is polyamide fabric?
Polyamide fabric is a textile made with polyamide fibres, often described in material listings as nylon or PA. Nylon is a synthetic fibre, rather than a natural fibre. However, “polyamide” describes composition, not a fixed package of performance properties: a thin lining, a dense woven fabric and a multilayer laminate can all contain nylon yet behave differently.
For a bag or equipment project, choose a specific article according to its role in the construction, weight, weave, coating and sewing process. If polyester or other materials are also present, compare the complete composition rather than just the name of the face layer. Start with the Polyamide (Nylon) category.
First identify the role of the material
A backpack’s outer panel contacts objects and surfaces; its lining needs to suit the internal construction; reinforcement around a handle attachment is assessed together with the seam. The same fabric is therefore not necessarily needed for every part.
Write down the priorities for your particular product: weight, shape retention, flexibility, behaviour at folds, cleaning, exposure to moisture or processing method. A city backpack, a tool bag and a compact case may have different priorities. These are selection scenarios, not confirmation that any nylon fabric is suitable for each product.
D, dtex and g/m² are different measurements
D (denier) and dtex describe yarn linear density. The value in g/m² describes the mass of one square metre of finished fabric. These are different parameters. A 500D label does not mean 500 g/m², and it does not by itself determine seam strength, water resistance or product service life.
Compare D with D, dtex with dtex, and fabric weight in g/m². Fabrics with the same yarn designation can differ in weave, finish and number of layers. Calculating consumption also requires usable width and the cutting layout; the weight of a finished bag cannot be calculated from the number in a fabric name alone.
What to check in a specification
- Full composition and construction: woven fabric, mesh or laminate; whether percentages refer to the entire material or one layer.
- Weight in g/m² and usable width: to estimate the weight of components and plan cutting.
- Weave and surface: including ripstop when confirmed for the exact article; a grid pattern is not a substitute for testing.
- Coating and finish: name, application side and documented performance. Surface DWR does not prove that a finished bag is watertight.
- Test data: property, unit, method and conditions. Abrasion or tear figures from different methods cannot be treated as one common scale.
- Colour and version: exact code, confirmed specification and sample. A photograph on a screen does not confirm a shade match.
Nylon, CORDURA and X-Pac describe different things
Nylon names a fibre. CORDURA is a material brand with different product lines; it should not be used as a synonym for any nylon fabric. The official CORDURA Classic description specifies nylon 6,6 and versions from 330D to 1000D. This describes that line, not every material carrying the brand.
X-Pac is a family of laminated materials. For example, its manufacturer describes VX21 as a construction with a 210D nylon face fabric and additional layers. VX21 should therefore not automatically be replaced with ordinary 210D nylon: composition and construction differ. A claim that the fabric is waterproof does not establish that seams, zippers or the finished product are waterproof.
Examples in the DELIM catalogue
Nylon fabric 1736 560 DTX is an example of an article with a yarn designation in DTX. Check its exact product listing and specification during selection; information about other nylon articles does not automatically apply to it. For the manufacturer’s materials, see also C.F. WEBER.
Fabric CORDURA Westridge 500D Multicam 250 g/m² is a separate CORDURA 500D fabric listing. Compare it with alternatives by finished fabric weight, version and assembly requirements, rather than the CORDURA name alone.
Technical fabric Dimension-Polyant (X-Pac®) VX21 210 g/m² is a separate laminate listing that must be distinguished from VX21 RIPSTOP and VX21 SOFT. These links identify specific materials to evaluate; the manager confirms availability, colour, volume and commercial terms.
Common selection mistakes
- Ordering “polyamide for a backpack” without an article number, construction or component role.
- Treating a higher D number as a guarantee of a better material for every task.
- Comparing laminate weight with the yarn designation of an ordinary woven fabric.
- Inferring waterproofing, fire resistance, ballistic protection or certification from a fibre or brand name.
- Checking only a piece of fabric instead of evaluating the seam, webbing, hardware and production process in a prototype.
Prepare an enquiry and define a sample check
Send the manager a product description, the fabric’s role, a photograph or sketch, required width, target weight, colour, processing method, approximate volume and deadline. If you already have an article number, include it and the manufacturer’s document. Identify requirements that cannot change.
Define acceptance criteria for your prototype in advance: sewing with your actual material stack, behaviour at folds, appearance and any other required properties. Sample availability is agreed separately. Use the guide to samples for production testing, and send a B2B enquiry to the manager to discuss specific materials.
Sources for verification
Technical examples were checked on 2 October 2026 against DELIM product listings and the official descriptions from Textile Exchange, CORDURA Classic and X-Pac VX21. Always verify the exact version against its current specification.