Memory - What is memory?
A property of materials that causes the material to attempt to return to its original dimensions after being distorted. A material may be distorted during manufacturing, printing, application to a substrate (particularly a curved or uneven surface), or by a change in environmental factors, such as temperature or humidity. If the memory of the material is the strongest force acting on a label, then the material will return to its original dimensions; if the opposing forces are stronger then the material may either remain in its distorted form or will partially return to its original form, which can cause further deformation of the label (including delamination). Memory is often seen in polymer-based materials, such as polyester, polyethylene, polyolefin, silicone, and vinyl, which are commonly used in label products. It can also be seen in paper that has been lightly curled or rolled up.Go Back to Glossary