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Hang Tags and Labels for Dry Bags

The journey a tag has to survive

A tag leaves the packing bench, travels flat in a carton for two to six weeks at 60 to 80% relative humidity, is unpacked into a shop that may be 15 m from open water, and then gets handled every day until the bag sells. The failure modes are not dramatic: a curled corner at 70% humidity, a 3 mm tear at the string hole after the tenth touch, and ink rub on a dark background where the plate cost was saved. Every one of those is a visible quality signal on a bag that cost far more to make than the tag.

Because dry bags are sold against a waterproof promise, the tag carries an unusual load. It must state the capacity honestly, name the construction material, and survive the same salt-laden air as the product. When a shopper picks up a 20L roll-top bag and the tag falls off, they do not blame the printer; they file it as evidence that the whole product is cheap. Budget accordingly: a tag costing 0.04 to 0.09 USD is protecting a bag with a tenfold value.

Choosing a substrate that tolerates humidity

Four families cover almost every programme. Coated art board at 300 to 400 gsm is the retail default: it prints beautifully, holds a score fold, and costs the least per thousand. Tyvek-style spunbond at 105 to 150 gsm does not tear at the string hole and stays legible after salt spray, but takes fewer ink densities. rPET sheet made from post-consumer bottle flake supports a recycled-content claim and still folds cleanly. Clear polypropylene suits a bag where the product itself should stay visible.

The decision rule is mechanical. If the bag will sit on an open-air rack or near a pool, choose the spunbond; if it ships straight into a big-box retailer with barcode scanning at the till, choose coated board with a machine-readable finish. Our own guiding reference for this trade-off sits alongside the print comparison in digital versus screen printing for dry bags, where the same humidity question is answered for the bag panel rather than the tag.

Matching tag size to bag volume

Tag area scales with the amount of copy the retailer demands, not with the bag. A 2L pouch needs three lines and a barcode, so a 45 x 90 mm card is enough. A 40L duffel with eight specification lines, a care symbol strip and two barcodes needs doubled space, and anything larger than a 120 x 180 mm card starts to look like a sign rather than a label.

String length matters as much as card size. On a roll-top bag the tag hangs from the buckle or the welded loop, so a 120 mm cord lets it lie flat against the panel for photography, while a 220 mm cord lets it swing free and catch on the next bag in the bin. The table below settles both dimensions by bag family, which keeps a whole range visually consistent across a shelf run.

Print method: where the break-even sits

Offset litho gives the sharpest type and the widest colour gamut but carries plate cost, so it only makes sense above roughly 3,000 pieces per design. Digital toner or inkjet has no plates and handles versioning, which is what you want for a colourway-limited drop or a market where three languages share one print run. Screen printing lays down the thickest ink film and the highest rub resistance, which matters for dark solid areas that will be handled.

Rub resistance is measurable rather than subjective: the abrasion of printed matter is covered by an ASTM method that runs a weighted disc over the surface for a set cycle count, and a good target is no visible transfer after 50 cycles on a dark ground. Type below 5 pt should be avoided on uncoated stock regardless of method, because the fine strokes close up after the first week of handling.

The lines every label has to carry

Retailers and border officers ask for the same core facts, and a missing line is the most common reason a shipment is held. Product identification, material composition by percentage, country of origin, responsible party address, care instructions and a traceable batch code cover nearly every market. Imprecise wording is the trap: writing 'waterproof fabric' tells nobody whether the shell is TPU laminate, PVC coating or a sprayed finish.

Capacity belongs on the tag in litres, measured the same way every time. Write it as a rounded whole number plus the method note, because a 20L bag measured to the roll line and one measured to the fill line differ by 2 to 4 litres in the shopper's hands. If you need a refresher on how to read those figures before you sign off artwork, the breakdown in our spec sheet guide shows the same numbers that belong on the card.

Care symbols that mean something

Textile care labelling follows a numbered symbol system defined by the ISO, and a coated bag is not exempt simply because nobody expects it to go in a washing machine. The minimum honest set for a welded dry bag is: wipe clean only, no machine wash, no tumble dry, no iron, and dry in shade. Those five symbols tell a buyer more than three paragraphs of prose and they cost nothing extra to print.

There is also a commercial argument for getting this right. A shopper who machine washes a TPU bag, sees the film haze, and leaves a one-star review is reacting to missing information, not to a product defect. Put the symbols on the sewn-in label as well as the hang tag so the instruction survives after the tag goes in the bin. Our cleaning guide uses the same five symbols in the field routine.

Barcodes that scan when the tag is damp

A barcode fails silently. It scans on the packing bench and fails at the till because humidity swelled the substrate by 1 to 2% and changed the bar widths. Keep the X-dimension at or above 0.33 mm, keep the quiet zone at 2.5 mm on each side, and print the human-readable digits below the bars so a clerk can key the number manually when a scan fails.

Place the code away from the string hole and away from any fold line, because a crease through the bars is the second most common failure after shrinkage. If you are printing in two markets with different code requirements, print one code rather than two side by side: adjacent symbologies confuse laser scanners and the operator ends up covering one with a thumb.

Attaching without piercing the film

The single biggest tag-related mistake on a welded bag is a plastic pin driven through the panel. The 1.5 mm hole it leaves is invisible in photos and fatal in a submersion test. Every serious programme therefore uses a load path that already exists: the webbing loop above the closure, a welded D-ring on the side, the handle grab loop, or a loop of cord around the roll itself.

Each method has a different labour cost at packing. A pre-tied string through a die-cut hole takes about four seconds per bag. A snap-lock tag through a webbing loop takes two seconds and survives rough handling better. An elastic loop around the rolled top takes three seconds but interferes with photography if it sits over printed artwork. Choose the method at the same time as you choose the bag fixture so they agree.

Sewn-in labels versus heat-transfer labels

Hang tags are removable; labels are permanent. On a fabric-panel bag you can sew a woven satin label into a seam allowance where the needle holes sit inside a taped seam. On a fully welded TPU bag you cannot, so the options narrow to a heat-transfer label pressed onto the face fabric, an RF-welded patch carrying the mark, or a printed panel done in-line before assembly.

Heat-transfer labels last best on flat internal surfaces such as the interior back panel, where they face no abrasion. On an external panel, sand and salt lift the edges within one season. If you need a permanent external mark, plan it into the print stage and let us know before the cutting markers are made; retrofitting a label line onto a finished tool is expensive. The placement logic is set out further in our logo placement guide.

Getting the print to agree with the bag colour

Nothing undermines a range faster than a tag whose brand red is two shades away from the bag it is tied to. The fix is procedural: specify the brand colours as a physical reference, approve a printed proof on the actual production substrate, and set a tolerance rather than a judgement. A colour difference under a Delta E of 2 is invisible to most observers; above 4 it reads as a mistake even to untrained eyes.

Remember that the reference and the production run use different processes. Fabrics are dyed or pigment printed and often carry a subtle texture that scatters light; a tag is smooth and reflective. Ask for the proof of both together on one sheet under the same light source, around 800 lux neutral white, and you will see the mismatch before the run rather than after.

Environmental claims that survive checking

A hang tag is the most scrutinised 100 square centimetres in the industry. Every recycled-content number, every 'ocean bound' claim, every plastic-free badge needs a document behind it. Set concrete figures: 'recycled content 62% by weight, verified per batch' is defensible, while 'eco friendly material' is not. On the packaging side, some markets now require extended producer responsibility registration numbers printed directly on the marketing material.

Keep strength claims away from vague adjectives too. 'Injection-moulded buckle, UV-stabilised, tested to 500 hours' is a factual statement; 'industrial strength' is not. Where a chemical compliance statement is needed for the EU market, the supporting documentation sits with the topic covered in our REACH compliance article, and the rules for California Prop 65 warnings are handled separately from the tag artwork itself.

What a tag programme costs and how long it takes

Tag cost breaks into three parts: substrate and print, finishing (die-cut, hole punch, cord), and the packing labour to attach it. Below 1,000 pieces the unit price is dominated by setup; above 5,000 pieces the substrate choice decides more than the print method does. The figures below assume a two-colour layout with a single barcode and a standard die shape.

Timing interacts with the bag build rather than running beside it. Because tags are packed at the end, artwork has to be locked roughly 7 to 10 working days before the bulk packing date, and the printed lot should arrive with the cartons rather than after them. On our own lines, waterproof bag programmes run with sampling in 6 to 10 working days and bulk production in 35 to 50 days with a 500-piece minimum, and the tag window fits inside that schedule if the artwork is approved early.

A one-page brief you can send tomorrow

• State the bag family and capacity range the tag must cover, with litres measured to the roll line.
• Choose substrate by display environment: spunbond for humid or marine, board for barcode retail.
• Fix the tag size and cord length from the size table so every size in the range looks related.
• List the six compliance lines exactly as they must appear, including responsible-party address.
• Give brand colours as physical references with a stated Delta E tolerance, not as a screenshot.
• Specify the barcode symbology, X-dimension and quiet zone, and put it away from every fold.
• Name the attachment point on the bag and confirm no piercing of the welded shell.
• Confirm the recycled-content percentage and hold the supporting certificate before print.
• Lock artwork at least 10 working days before packing and request two proofing rounds.

Programmes that follow this sequence rarely need a second print run. The ones that do are almost always missing one of three things: a physical colour standard, a confirmed attachment point, or a compliance line list reviewed by someone who has actually shipped into the target market. Software version control helps too; name your artwork files with a date and revision number so nobody packs Wednesday's cards by mistake.

Minimums start at 500 pieces with FOB Xiamen terms, T/T 30/70, and AQL 2.5 inspection before the cartons close.

From here, two adjacent decisions shape how the card finally looks. The colour story across sizes belongs to our colour range guide, and the outer box that carries the through-line is handled in packaging ideas for dry bags. Both sit upstream of the artwork you send us, so read them before the first proof rather than after the second.