How Is Quality Control Performed on Digitally Printed Fabrics?
Quality control for digitally printed fabric covers more than appearance. Fibre, width, weight, surface, colour match, print defects, dimensional change and end-use fastness should be evaluated together.
What is printed fabric quality control?
It is the inspection, measurement and documentation process used to confirm that fabric meets approved specifications and end-use requirements at defined production stages.
When should the control plan be prepared?
Before sampling and production. Characteristics, methods, sampling frequency, tolerances and actions for nonconformity should be agreed in advance.
What is checked before printing?
- Fibre and construction
- Usable width and weight
- Base whiteness or colour
- Stains, holes, lines and construction defects
- Absorbency, surface and pretreatment consistency
- Lot and roll identity
What is checked during printing?
First output is compared with the approved reference, followed by checks at defined intervals. Missing nozzles, banding, colour drift, staining, wrinkles, feeding errors and repeat joins are monitored.
How is colour controlled?
Compare against the approved physical reference under defined lighting and consistent viewing conditions. Instrumental measurement and an agreed tolerance may be used where required. ISO 105-J03 provides a method for calculating colour difference between specimens of the same material.
Which visual defects are inspected?
ASTM D5430 describes procedures for visual examination and grading of fabrics. Buyer and supplier should use the same grading option and acceptance rule.
- Stains, oil and contamination
- Holes, tears and yarn defects
- Unprinted areas or ink marks
- Banding and colour variation
- Edge curl and crease marks
- Side-to-side or roll-to-roll shade change
- Repeat joins and directional drift
How are width and weight checked?
Usable width should be separated from total width. Weight should use suitable sampling and measurement; one small cutting should not automatically represent an entire shipment.
How is dimensional change checked?
A sample representing the final route is tested under defined washing and drying conditions. Length and width are reported separately. ISO 5077 is used for dimensional change after specified procedures.
Which colourfastness tests are selected?
Tests depend on end use. ISO 105-C06 addresses laundering and ISO 105-X12 addresses dry and wet rubbing. Light, perspiration, water or dry-cleaning tests may also be required.
How is final roll inspection documented?
Record roll identity, net length, usable width, defect positions, colour lot and disposition. Photographs should support, not replace, measurements and acceptance records.
What happens when a defect is found?
Segregate the material, preserve traceability, define the extent and follow the agreed corrective process. Rework, downgrade or rejection depends on order terms.
What is the pre-production quality checklist?
- Match the approved sample to specifications.
- Check base fabric width, weight and surface.
- Approve first output against the physical reference.
- Record in-process checks.
- Recheck colour, handle and dimensions after finishing.
- Complete required fastness tests.
- Create a final roll inspection record.
Frequently asked questions about printed fabric quality control
Does one print sample approve the entire production?
No. It is the target reference; lot, machine and process variables require in-process and final checks.
Can colour be approved only by eye?
Visual assessment matters, but defined lighting and, where needed, instrumental measurement with agreed tolerances should be used.
Are the same tests used for every fabric?
No. The plan depends on fibre, printing method, care instructions and end use.