The presentation includes several distinct cracking cases: rubber-particle water-based ink, low-temperature flex on a special substrate, and high-density print flex failure. A visible crack alone is not enough to select a different product.
Information that narrows the cause
| Check | What to record |
|---|---|
| Under what condition does it crack? | State whether failure occurs at normal temperature, in a low-temperature test, after heat exposure, or during shoe forming. |
| What is the printed construction? | List the basecoat, colour layer, raised layer and finish. Include powder or special-effect additions. |
| Is the substrate unusual? | The source special-material case calls for repeated evaluation on both cut pieces and finished shoes. |
| Was conditioning complete? | Keep interstage drying separate from final conditioning. The raised-print case highlights cure and hardener factors. |
| Was the trial changed during production? | Record material batch, mixing and layer-building changes rather than comparing only product names. |
Interpret the source case correctly
The 7ST low-temperature case does not justify claiming that 7ST passes every low-temperature requirement. The presentation identifies 37H and a suitable water-based approach as candidates in that context. They still need evaluation on the customer material.
Prepare a controlled trial
Keep a record of the material, complete layer sequence and evaluation method. Change only the part of the process agreed with the technical team, then compare against the original construction under the same test conditions. A sample trial should establish suitability before a production change.
Ask for a technical review
Send photographs, exact product models, application steps and your target test. Include a material sample when the finish or construction is uncertain.
Evaluate it on your own material
Send the material type, surface finish, current process and required test. Our technical team can help identify a trial candidate and the appropriate TDS / SDS.