Blank T-Shirt Manufacturing in China: What Print Shops and Brands Should Specify

A blank T-shirt is not a garment waiting for a design; it is a printing substrate. The yarn, the knit surface, the weight and the shrinkage behaviour decide whether screen print sits flat, whether DTG holds detail and whether the print still looks right after the customer has washed the shirt three times. Specifying a blank therefore starts with the decoration, not with the catalogue.

Why choose a blank as a substrate rather than a garment?

Because the decoration is the product.

For a print shop or a merchandise brand, the shirt’s job is to carry artwork predictably, which makes surface, weight and shrinkage the specifications that matter most.

The shrinkage point is the one most often overlooked. A shirt that shrinks within tolerance still changes the relationship between the print and the garment, and a print placed close to a seam or a hem can end up visibly off-centre after a wash. That is a blank specification problem, not a decoration problem, which is why the fabric has to be chosen with the print in mind rather than afterwards.

How do yarn and surface affect screen print and DTG?

Smooth, tight knits print most predictably.

Combed and ring-spun yarns produce a more even surface, which gives screen print a cleaner edge and DTG a finer dot, while carded or textured knits introduce irregularity that shows in the print.

The two methods also differ in what they need from the fabric. Screen printing lays ink on the surface and relies on a consistent knit to hold the shape of a line, while DTG bonds ink into the fabric and depends on the fibre’s ability to accept it, which is why a cotton-rich surface performs better than a heavily synthetic one. Ask the factory which decoration methods it has validated on the quality you are considering, and test a printed sample rather than a plain one. Where the artwork contains fine detail, the yarn specification is effectively part of the artwork brief.

What does weight change for a printed blank?

Ink behaviour, opacity and how the garment hangs.

Heavier blanks absorb more ink and hold a boxy shape, while lighter blanks drape more and may show through under a print or in pale colours.

The practical consequence is that the same artwork reads differently across weights, and the same colour looks different on each. Ask for the weight in grams per square metre alongside the composition, and print the same design on the two weights you are considering before deciding. Where a brand sells both merchandise and retail product, keeping a single blank weight across the range simplifies the print setup and the inventory, even where the garment’s role differs between the two. Weight also affects how the print feels to the wearer, which is a factor in premium merchandise: a heavy blank with a substantial ink lay can feel stiff where the design sits, while a lighter blank carries the print more softly.

How should shrinkage be controlled?

By relaxing the fabric and specifying a measured figure.

Shrinkage comes from tension built into the yarn and knit, and it appears in the first washes unless the fabric is relaxed and the garment is washed or steamed before packing.

Ask for a shrinkage figure measured after a defined wash cycle rather than a general assurance, and ask what method the factory uses to reach it. Then decide placement with that figure in mind: a print that sits close to a hem or a side seam is more sensitive to movement than one centred on the chest. Where the figure is high, either adjust the artwork’s placement or move to a more stable quality, because a design that shifts after washing generates complaints that cannot be resolved by reprinting.

Why does colour consistency matter more on blanks?

Because the shirt is often sold across a long period.

A blank range is usually replenished repeatedly, so a shade that drifts between lots becomes visible when customers buy the same product twice.

Ask the factory to retain a physical colour standard and to compare each dye lot against it, and keep your own reference swatch as a cross-check. Where a reorder will consume more than one lot, ask for the lots to be allocated across sizes or styles rather than mixed within one, so no customer receives two shades of the same product. For print shops, colour consistency also interacts with the print itself: a light grey ink that reads well on a white shirt may disappear on a cream one, so artwork approved on one blank colour should be re-checked on the others before the range is printed. That check takes one printed garment per colourway and prevents a whole run being printed onto a blank that does not carry the design.

How should minimums and size packs work?

By component, and by how the shirts will be printed.

The minimum is set by the fabric lot, the dye lot and the packing, and the size pack determines how many shirts of each size arrive in a carton.

For a print shop the practical constraint is usually the size pack, because printing is organised by garment size and a pack that does not match the demand curve produces leftover sizes. Ask what the standard pack contains, whether it can be varied, and whether a mixed pack is available. Where a brand is printing several designs, a size pack that supports the most popular sizes reduces both waste and storage, and it makes the reorder arithmetic simpler than a pack built for a different market.

What changes if you print your own label on a blank?

You inherit the labelling obligations.

Owning the label means the fibre composition, care instructions and origin marking on the finished shirt are your responsibility, even though you did not produce the garment.

That is a change in role rather than a technical problem, and it is manageable if the blank supplier provides the composition and care information in writing. Ask for the exact fibre composition, the recommended care instructions and the origin details before printing any label or product page. Where the blank carries the producer’s own label and you resell it unchanged, confirm what that label already states, because a mismatch between a reseller’s product page and the garment’s own label is one of the simplest compliance failures to detect.

How should landed cost be compared with a domestic blank?

On total landed cost at the same specification.

The comparison is not the factory price against a domestic list price; it is the delivered cost of a defined garment, including freight, duty and the handling you will perform yourself.

Importing blanks adds freight and duty, and it adds lead time, which matters most for a print shop working to event deadlines. Set against that, the unit price at volume can be materially lower and the specification is under your control, which is useful where a domestic blank does not offer the weight or the surface the artwork needs. Ask both routes for the composition, weight, size pack and delivered cost, then compare on the same basis. Where the volumes are small, the domestic route often wins on lead time; where they are large and repeatable, importing usually wins on cost and specification.

It also helps to compare the two on storage. An imported order arrives in larger quantities and occupies warehouse space for longer, which is a real cost for a small print operation and an advantage for one that prints continuously. Modelling the cash tied up in stock, rather than only the price per shirt, usually clarifies the decision.

What testing should happen before a container is committed?

Print a sample and wash it repeatedly.

Five tests cover the failures that would otherwise reach a customer, and each is cheap enough to run before a container is committed.

• Print the actual artwork on the actual blank, not on a similar garment.
• Wash the printed sample at least ten times and inspect for cracking, fading and edge lift.
• Measure the garment before and after to confirm the shrinkage figure.
• Check opacity on the lightest colourway you intend to sell.
• Confirm the pack contents, carton dimensions and labelling before loading.

Each test corresponds to a failure that would otherwise be discovered by a customer rather than by your team.

The printed sample in particular should be retained as the standard for later production, because ink batches and curing settings can vary between runs just as dye lots do.

Sources: Supima — extra-long staple cotton; 16 CFR Part 303 textile labelling; 19 CFR Part 134 country of origin marking; OEKO-TEX STANDARD 100; ISO 9001 quality management.