Bespoke Packaging Artwork: A UK Guide to Print-Ready Files

Many brands start a custom print order with a logo, brand colours and a clear idea of the impression they want to make. Then the print team asks for vector files, CMYK or spot colours, bleed, safe margins and outlined fonts. A design job suddenly feels technical and easy to get wrong.

That concern is fair. Artwork for printed cores and tubes is where branding, production and budget meet. A good file makes your product look considered from the first touch. A weak one can mean faded colours, cropped text or a reprint nobody planned for.

At Just Paper Tubes (JPT), we have made cardboard tubes and cores since 1987. We offer personalised inline printing on inner liners, so this guide covers what we see most often when brands prepare artwork.

Why your tube and core artwork matters

Printed cores and tubes are often overlooked, but they carry your brand where others don’t look. On a tape core, a branded inner liner stays visible even when the tape is gone. We’ve all reached the end of a good roll and can’t remember the brand. A liner that matches your brand reminds end users who made it, which helps them buy again and builds loyalty.

Good artwork does three jobs at once:

• It presents your brand clearly. Logo, colours and messaging should read at a glance.

• It respects the product. Artwork has to suit the core’s size, material and print method.

• It protects your budget. Every error caught before print avoids waste, delay and an awkward reprint.

If the artwork only works as a mock-up on screen, it isn’t ready for print.

Know your core before you design

With boxes, the template comes first. With cores and tubes, start from the specification. Before you design anything, confirm these with us:

1. Core dimensions. Length, internal diameter and wall thickness.

2. Liner colour. We supply white kraft, brown and printed liners, plus specialised solutions. The liner colour affects how your ink looks.

3. Print area. Check what part of the liner carries the print and how the design repeats along it. [Confirm with JPT pre-press.]

4. Brand placement. Decide whether the print needs to be a pattern, a logo or a repeated message, and how it should read when the core is cut.

Treat these requirements as fixed and build the design around them. Brands that finish a visual concept first and then try to force it onto a core often run into problems.

Core technical specs for clean printing

Most print problems come from ordinary file issues rather than anything dramatic.

Use vector artwork for logos and text. AI, EPS and press-ready PDF files keep edges sharp at any size. A logo saved as a small web PNG or JPEG can look soft once printed, and brand marks should usually stay vector-based.

Check resolution at final print size. Photography or raster images should generally be around 300 DPI at the size they’ll print. An image that looks fine on a website can fall apart when scaled up.

Allow for bleed and safe margins. Tubes and cores are cut and processed by machine, so artwork needs room for slight movement. Extend backgrounds past the cut edge, and keep logos and text a safe distance from it. 

Supply a press-ready PDF. A locked PDF means fewer font issues, missing links and layer confusion than an editable file, and it saves time at pre-press.

Managing colour for a consistent brand

Colour disappointment is common because it feels personal. A brand picks its signature colour, then the printed sample looks flatter than expected.

The reason is that screens use light and print uses ink. A colour that glows on a monitor can look duller on paper. So design for print from the start, and don’t treat your laptop screen as the final judge.

Remember that liner colour matters too. The same artwork looks different on white kraft than on brown. [Confirm JPT’s ink options and any limits on the number of colours.]

If a brand colour must match across packaging, labels and other printed items, a PMS (spot) colour offers tighter control than CMYK. It may add to setup, so keep it for colours your customers will actually notice.

Pre-flight checks before approval

By the time artwork is ready, it’s tempting to think the hard work is done. This is where preventable mistakes get caught or accidentally approved. A pre-flight check should include:

• Fonts outlined, so a missing font doesn’t change the layout.

• Linked images embedded or checked, so low-quality previews don’t print.

• Colours confirmed, whether CMYK or PMS.

• Spelling and details reviewed by more than one person. Check brand names, web addresses and contact details slowly.

• Print-only layers, with any guides kept non-printing.

Treat the proof as your last cheap fix

The proof stage is the final decision point before production. Review it in passes: dimensions and layout first, then logo size and colour, then copy, then production details. Once you approve, think of the printed stock as already existing. A typo that’s irritating on a draft is a real problem across a full run of cores.

Sustainable artwork

Sustainability starts with material, but artwork preparation matters too. The greenest print run is the one that doesn’t need correcting or replacing. Reprints use board, ink, time and transport. Correct files, a careful proof and a clear spec help cut waste before the press starts.

Our tape cores are made from cardboard that is 100% recyclable, and we hold ISO 9001 and ISO 14001 registration for quality and environmental management.

Ready to print your brand on your cores?

Share your artwork with our team early. A quick conversation about your specification and file setup before sign-off usually saves more time and cost than fixing mistakes later. With 24-hour production, our own recutting and drying facilities, and next-day delivery or same-day collection, we can turn your approved artwork around quickly.

Contact Just Paper Tubes Ltd today for a quote:
Phone: 01757 630226
Email: [email protected]
 Railway Mill, Lowmoor Rd, Cliffe Common, Selby, North Yorkshire, YO8 6EF