But a group of French scientists have made a self-healing rubber band material that can reclaim its stretchy usefulness by simply pressing the broken edges back together for a few minutes.

In addition to pressing hard on top, I also used a rubber mat under the envelop to help obtain the clear print.

The invention relates to synthetic resin rubber hard pressing roll for transferring pattern to the surface of a workpiece in the heat transfer printing technology and a preparation method thereof.