Views: 0 Author: Site Editor Publish Time: 2026-10-28 Origin: Site
Printing is where a custom bag budget is usually won or lost, and it is almost always decided in the wrong order. A buyer picks the method they used last time, then discovers the artwork does not suit it, or that the quantity cannot carry the setup cost. The method should follow the artwork, the material and the run size — not habit.
Below is a comparison of the printing methods used on reusable bags, what each one is genuinely good at, and the failure modes worth writing into your specification before production starts.
Every printing method carries two costs that move in opposite directions: a one-time setup, and a per-unit run cost. Silkscreen has a modest setup per colour and a low unit cost at volume. Gravure has a very high setup and the lowest unit cost at very large volume. Digital has no setup at all and the highest unit cost per piece.
That means the "best" method does not exist in the abstract. At a few hundred pieces, the method with no setup usually wins. At fifty thousand, the method with the cheapest run cost wins, and the setup becomes noise. Choosing a method before you know your quantity is guessing.
Method | Best for | Gradients and photos | Setup cost | Watch out for |
|---|---|---|---|---|
Silkscreen | Solid spot colours, bold logos, high volume | Poor — one screen per colour | Low per colour, but repeated for every change | Ink bleed on fibrous non-woven; small type filling in |
Heat transfer | Full-colour artwork, photographs, gradients | Excellent | Moderate | A visible film edge; cracking over folds if the press settings are wrong |
Digital | Short runs, samples, many small SKUs | Excellent | None | Unit cost falls slowly, so it loses to silkscreen at volume |
Gravure | Very long runs on film or laminated material | Excellent | Very high — engraved cylinders | Uneconomical below large volumes |
Embroidery | Simple logos, premium positioning | Not suitable | Moderate (digitising) | Fine detail and small text do not embroider cleanly |
Silkscreen pushes ink through a mesh, one screen per colour. It lays down a solid, opaque deposit that reads well on textured materials like non-woven polypropylene, cotton and canvas, and at volume it is usually the cheapest per unit of any method.
Its weakness is change. Every colour is a separate screen, so every late artwork revision is a new setup. A five-colour design that changes once during approval has cost you ten screens. If your artwork is still moving, silkscreen is the most expensive place to be indecisive.
It also punishes fine detail. Very small type and hairline strokes tend to fill in, because the ink spreads slightly as it passes through the mesh. Bold shapes and solid blocks of colour are where silkscreen is at its best.
Heat transfer prints the artwork onto a carrier film, then presses that film onto the bag under heat and pressure. It handles what silkscreen cannot: photographs, gradients, and multi-colour artwork without a screen for every tone.
Two things are worth specifying. First, the transferred film has an edge you can feel, and on a thin panel it can stiffen the area around the print. Second, adhesion is a process-control question rather than an ink question — temperature, pressure and dwell time all matter, and a transfer applied over a crease or a seam is the one most likely to lift later.
Digital printing removes setup entirely, which makes it the right answer for samples, short runs and ranges where you need several designs in small quantities. Colour reproduction is good and there are no screens to burn.
The catch is the cost curve. Digital unit cost falls only slowly as quantity rises, while silkscreen and gravure fall steeply once setup is amortised. Somewhere in the middle of your quantity range, digital stops being the economical choice — and that crossover point is worth asking your supplier to calculate rather than assume.
Gravure engraves the image into cylinders, which makes setup expensive and the run cost very low. It is the standard choice for printing on film and laminated material at long length, and it reproduces photographic artwork across a roll better than any of the methods above.
Offset printing is the equivalent volume technology for the paper components of a bag programme: paper bags, headers, hangtags and insert cards. Multi-colour presses of the kind used for commercial print work sit here. Both gravure and offset are volume tools; at sample quantities they are the wrong instrument.
Embroidery is priced per stitch, which makes it the method most sensitive to how complex your logo is. It is durable and reads as premium on canvas and cotton, and it never cracks or peels because there is no film and no ink.
What it cannot do is fine detail. Small text, thin outlines and gradients do not stitch cleanly, so an embroidered logo is usually a simplified version of the printed one. It also adds weight and bulk to the panel, which matters on a gusseted bag where the print area sits close to a fold.
Setup is a fixed cost divided by the number of units. Ask for the same artwork quoted at your real quantity, not a round number — the answer often changes the recommended method.
Spot colours and simple shapes favour silkscreen. Photographs and gradients favour heat transfer, digital or gravure. Fine type and hairlines rule out silkscreen and embroidery.
Non-woven polypropylene, cotton, canvas, polyester, PVC and laminated film each behave differently with ink. Ink that adheres perfectly to cotton can bleed on non-woven and fail to bond on a laminated surface. This is the variable most often left out of a brief, and the one most likely to cause a rejected first run.
What your artwork contains | Method that handles it | Method that will struggle |
|---|---|---|
Solid spot colours, one to three | Silkscreen | Digital — produces it, at a higher unit cost |
Photographs and gradients | Heat transfer, digital, gravure | Silkscreen, embroidery |
Very small text and hairlines | Digital, heat transfer | Silkscreen (fills in), embroidery (cannot stitch it) |
Artwork spanning a gusset or seam | Design split per panel | Any method printed straight across the seam |
Laminated or coated surface | Matched ink plus surface treatment | Standard ink applied without an adhesion test |
Very long run on film-based material | Gravure | Digital, heat transfer |
Ink bleed on non-woven. The fibrous surface wicks ink outward, softening edges. Specify the intended result on the actual substrate, not on paper.
Cracking along folds. Print that crosses a crease flexes every time the bag is used. Keep the print area off the fold line, or require a flexible ink system.
Registration drift across gussets and seams. Multi-colour artwork spanning a seam rarely lines up. Split the design so each panel prints independently.
Colour shift against Pantone. Ask for a physical proof or a colour standard on the production substrate before the run, not after.
Adhesion failure on coated or laminated surfaces. Requires matched ink and often surface treatment. If your bag is laminated, say so in the brief.
Filled-in small type and hairlines. The most common disappointment on silkscreen. Set a minimum type size with your supplier and hold the artwork to it.
Send vector files with text converted to outlines, name your Pantone references, and mark the print area and placement on a dieline — including which panels, and whether the gussets carry print. Our guide to confirming artwork before mass production covers the approval checks that catch most errors, and the RFQ template sets out how to write the printing line so a quote is comparable.
A method is only available if the factory actually runs it. Our own printing floor runs gravure, digital and offset equipment — the line list and the printing flow chart are on our printing capability page.
We produce non-woven shopping bags with logo printing and the wider reusable shopping bag range from Cangnan, Zhejiang. If you are still deciding what the bag has to survive in your market, start with what changed for US retail in 2026.
Send your artwork and your quantity through our contact form and we will tell you which method we would run, and why — rather than quoting the method you asked for.
