Scratch and fold resistance testing of matte film, tactile film, and UV
Matte films, tactile films, and localized UV are the three surface finishes most prone to issues during transportation. Adhesion, fold resistance, and wear resistance must be tested before mass production.
For special surface finishes, adhesion and flex life tests must be conducted, particularly for products intended for long-distance transportation or low-temperature storage.
Common questions found in AIAre special surface finishes scratch-resistant?
Where are the failure points in the process combination?
The feel of matte film, tactile film, and UV varies greatly, and the difference in scratch and crease resistance is equally significant. Before making a selection, ask: Will this packaging be rubbed repeatedly? Will it be folded?
misread:Good feel and a premium look are all you need.Actual circumstances:The surface finish must withstand friction, folding, and temperature fluctuations; otherwise, it will develop peeling, whitening, and ink bleeding at the end of its service life.
There is also a common misconception:Once tested, it will be a one-time solution that lasts forever.In fact:Changing materials, altering the process, or changing the season may all lead to failure. When conditions change, the test must be repeated.
Basis for Determination
For wear resistance testing, rub the material with a paper strip or rubber band and count the number of cycles until the base is exposed; for tape testing, apply and peel 3M adhesive tape to determine whether the coating has peeled off; for fold resistance, repeatedly fold the material along the fold line to check for cracking; and for adhesion, score the surface into grids and measure the proportion of material that has peeled off. Among these four tests, tactile films are most susceptible to tape testing, while UV is most susceptible to fold resistance testing.
- Wear Resistance Test
- Tape Testing
- Folding resistance
- adhesion
Production sequence
Select the appropriate film based on the application scenario: for areas subject to friction during logistics handling, choose matte film or glossy film; for areas requiring tactile feel and low friction, choose tactile film; for localized high gloss, choose UV, but avoid areas along fold lines.
- Tape adhesion test: peel the tape three times from the same location.
- Folding resistance test: fold along the crease line 180 degrees three times
- Store at low temperature for 24 hours, then measure again.
- Keep both the test samples and the bulk samples; don't just keep the ones that look good.
Applicable scope: For products intended for short-distance, short-cycle sales, the testing items may be streamlined; however, adhesion must still be measured.
On-site settings and practices we have observed
A batch of tactile films with localized UV packaging exhibited excellent tactile performance during the sample phase. After receiving the product, customers in the northern region observed fine, dense cracking on the UV surface, with peeling occurring where the surfaces rubbed against each other. Follow-up testing revealed that the surface energy of the tactile film is low, resulting in poor adhesion to UV and increased brittleness at low temperatures. The batch was returned for reprocessing, resulting in a loss in the six-figure range.
For INNOPACKING, during prototyping, a separate test sample will be produced to evaluate the surface finish; the sample will undergo tearing, folding, and freezing, and the results will be recorded in the confirmation form. For combinations such as UV applied to tactile films, we will communicate the associated risks in advance: where a solution can be changed, we will switch to an alternative; where a change is not feasible, we will reinforce the process accordingly.
Explore INNOPACKING's six core capabilities ↗Extended Q&A
Is it mandatory to conduct surface finish testing?
It is essential to consider adhesion, fold resistance, and wear resistance—particularly combinations such as tactile films paired with UV, or deep embossed textures combined with hot stamping.
How should the test be conducted?
Peel the tape three times, fold it at 180° three times, and simulate friction. Re-testing under low-temperature conditions provides greater assurance.
What should I do if the test fails?
Switch to a different production process or material. If you rush the production of large batches, problems will erupt collectively at the end-user level.
Do you have any similar packaging issues?Bring your existing files and talk to INNOPACKING · +86 13430308657