What commonly causes this problem with QR codes?

Common causes include buying by headline speed without including handling and changeover; A change in pack surface and presentation or label, liner, adhesive or ink.; assuming one machine will cover formats outside its practical range.

How can I prove that an adjustment has worked for QR codes?

Record a representative baseline, change one variable at a time and repeat the same measurement over enough packs to show that the result is stable rather than a one-off improvement.

When should I consider a different machine or production method for QR codes?

Consider a different route when correct setup and maintenance cannot hold the required quality and sustained output across the complete product and pack range.

What information should I send before asking for a solution for QR codes?

Include Pack samples; Label reel or print substrate; Label size, gap and reel direction; Required code or artwork.

Which solution website is most relevant to this question?

The clearest starting point on this page is Labelling Machines UK. Final suitability still needs to be confirmed using the actual product, packaging, output and site information.

Labels and coding

Which labelling or coding machine is best for QR codes?

Practical guidance for QR codes: match the machine principle to the real product, pack, output and acceptance criteria.

Reviewed by How to Package editorial team · Updated 1 September 2026 · Direct explanation, ordered checks and relevant solution routes. Application-specific engineering review is still required.

Direct answer

For QR codes, choose the operating principle from the product, pack and required result before comparing model numbers. Reliable identification needs a controlled pack surface, correct label or ink, stable web or print path, accurate triggering and verified finished data. First, list every product and pack format and record position tolerance, adhesion, print readability, scan rate and reject accuracy. Make one controlled change at a time so the original cause is not hidden by several new settings.

Evidence to collect

Requirement-to-evidence matrix

List each must-have requirement, the measurable pass criterion and the evidence that will prove it. Compare machinery against the matrix rather than feature lists.

Application measure: For labelling and coding, include label position, skew, adhesion, sensor state, print contrast, scan rate and false-reject performance.

Labelling Machines UK

See the machinery and application options most closely matched to this production question.

View the solutionlabellingmachinesuk.co.uk

Production environment relevant to labels and coding

Work safely: Isolate machinery before inspection or clearing. Follow the machine manual, site procedures and competent-person requirements.

What usually causes this?

buying by headline speed without including handling and changeover
A change in pack surface and presentation or label, liner, adhesive or ink.
assuming one machine will cover formats outside its practical range
The equipment or handling method not being set for two-dimensional codes whose size, contrast and print quality affect scanning.
not defining accuracy, torque, position, seal or code acceptance

Checks to make in order

List every product and pack format
Record position tolerance, adhesion, print readability, scan rate and reject accuracy using a representative sample.
Define sustained good output and measurable tolerances
Check sensor and trigger position, web tension or print-head distance and wipe-down, rotation and code verification.
Identify the hardest product, smallest pack and largest pack
Confirm utilities, space, access and cleaning needs
Witness a test using representative samples

Useful next step

Compare coding technologies

Match the code method to substrate, data and line handling.

Open this resource →

How to decide the next step

Qr codes involves two-dimensional codes whose size, contrast and print quality affect scanning. Use a written requirement and sample trial to compare complete production routes, not isolated catalogue specifications.

If adjustment and maintenance cannot hold the required result across the complete product and pack range, compare the machinery route against a written acceptance test. The important comparison is sustained good output—not only maximum cycle speed.

What to include in your production brief

Supplying the information below makes it much easier to distinguish a setup problem from a machinery or packaging limitation:

Pack samples
Label reel or print substrate
Label size, gap and reel direction
Required code or artwork
Position tolerance
Line speed and data interface
Samples that represent qr codes
A short video of the current process and fault

Relevant solution websites

These specialist sites match the production process discussed above. Final suitability should be confirmed with samples, output, site and acceptance information.

Labelling Machines UK Coding Machinery Print and Apply

Next decision resource