Glue Bond Separation of Weather-Resistant Grades:
The facings and corrugated medium of fiberboard shall remain securely and continuously adhered to their contacting surfaces when tested as specified in paragraph 7.4 of the ASTM D4727/D4727M standards. Edge separation shall not exceed 1/4" in depth.
Samples are pulled from each production run of weather resistant fiberboard and tested for compliance with the required specifications. Test results are recorded for each grade and are available to our customers upon request.
The following material and end item test requirements are taken from ASTM Standard D4727/D4727M. These standards cover weather resistant V&W products manufactured by Plymouth Packaging.
| Thickness inches (mm) | Bursting Strength (psi) | ||||
| Corrugated Medium | Outer Facings | Dry | Wet | ||
| SW | V3c | .010 (.254) | .023 (.584) | 400 | 150 |
| SW | W5c | .010 (.254) | .016 (.406) | 275 | 100 |
| DW | V11c | .010 (.254) | .023 (.584) | 600 | 300 |
| DW | V13c | .010 (.254) | .016 (.406) | 400 | 200 |
