Your Trusted Custom Cotton Bags Manufacturer

Cotton looks like the simplest bag category and is one of the least forgiving. Fabric weight sets the price, handle attachment sets the service life, and residual shrinkage sets whether the bag still fits your print after the customer washes it. Every one of those is measurable before you commit to a run.

Specification options for cotton bags

Cotton canvas is specified by weight in ounces per square yard, and the weight drives everything downstream: how the handle behaves, whether the bag stands up, and how many print passes the surface will take. The three weights below cover the majority of retail and promotional programmes.

Shrinkage is the number to argue about early. Cotton is sanforised or pre-washed before cutting so that a printed bag does not distort the artwork after the first wash, but the residual figure still has to be written into the specification and tested. A bag that shrinks 6 percent takes a registration-critical print with it.

How a cotton bag is produced

Fabric is relaxed and pre-shrunk before it reaches the cutting table, then cut on grain. Skew is the enemy here: a panel cut two degrees off grain produces a bag that twists after washing, and because cotton shows every flaw of this kind, cutting tolerance is held tighter on canvas than on a coated synthetic.

Handle construction is the difference between a promotional bag and a retail one. A self-fabric handle turned and straight-stitched to the top edge is fine for a single-use giveaway. A retail bag needs the handle carried down the body as a continuous run, terminating in an X-box stitch onto a reinforcement patch, so the load travels along the panel rather than hanging off the hem.

Seam choice follows the same logic. An overlocked internal seam is quick and acceptable on a light-weight promotional bag, but it frays in the wash and leaves loose fibre inside the bag. Bound or felled seams cost more sewing time and are what a customer expects from a bag they paid for.

Gussets and base panels give the bag volume and let it stand. On a 10 oz and above build, the base is cut as a separate panel with boxed corners, and the corner seam is reinforced because that is where a loaded bag splits. On lighter weights, a folded side gusset keeps the panel count down and the price down, at the cost of a softer shape.

Printing on cotton is straightforward but not free of constraints. Water-based inks sit in the fibre and feel soft, plastisol sits on top and covers better on dark fabric, and direct-to-garment printing handles photographic artwork at higher unit cost. Every method needs a cure step and a wash test before the run starts, because ink that cracks in a domestic wash generates returns for months.

Cost drivers and MOQ for cotton bags

Fabric weight against yardage is the dominant cost line, followed by handle construction, print method and colour count, and any certification premium for organic or recycled fibre. A move from 10 oz to 12 oz is roughly a 20 percent fabric increase, which is why the weight decision should be made against the intended contents, not against a swatch.

The quantity floor is 500 units per style per colourway, relaxed to 300 for programmes already in the book. Sampling runs 6–10 working days on stock fabric and 12–15 where a custom dyelot or a woven label is required. Sample fees are USD 50–150, credited against the first bulk order; tooling, where a custom label or print screen is needed, sits at USD 300–2,500.

Terms are T/T 30/70 against FOB Xiamen, with EXW, CIF and DDP quoted on request and Incoterms 2020 applied. You will have an indicative price in 24–48 hours. Transit is 25–35 days by sea, 5–8 days by air and 3–5 days by courier; cotton bags compress well, so a 20GP at about 28 CBM carries a far larger piece count than most buyers plan for.

Quality gates and acceptance criteria

Sampling follows AQL 2.5 to ISO 2859-1 — Critical 0, Major 2.5, Minor 4.0 — with AQL 1.5 available where a retail customer asks for it. Inspection is completed before loading on our 4,950 m² SGS-verified production floor, and wash-test results from the pre-production sample are attached to the file so a reorder can be checked against them.

On cotton, the tests that matter are shrinkage, wash fastness and handle strength. Dimensional change is measured after a controlled domestic wash cycle, colour fastness to rubbing and washing is checked so a dark print does not mark a light garment, and the handle is statically loaded well above realistic contents because a torn handle is the complaint that ends a promotional programme.

Fibre claims, certifications and traceability

Organic and recycled claims are enforceable statements, not marketing language, and the documentation has to exist before the claim goes on a label. Recycled cotton is documented under GRS with a transaction certificate covering the lot used; OEKO-TEX Standard 100 certification covers the finished article against restricted substances; and both have to be requested when the material is booked rather than after the run is packed.

Traceability also matters for the dye house. Shade matching on cotton is done against an approved lab dip, and a reorder several months later is matched to the same physical standard rather than to a photograph, because cotton dyelots drift. Keeping that standard on file is what lets a second season match the first.

Ordering path for cotton bag programmes

Allow 8–11 weeks for a first run. Custom dyelots and woven labels are the usual schedule risks on this product.