| 摘要 |
An erasable product such as an erasable and rewritable label or an erasable sign comprises a base layer (2) and a transparent or translucent upper sheet (3) over the base layer which provides a smooth and wrinkle-free top surface to the product. The upper sheet and base layer are releasably adhesive together under pressure applied manually on the upper sheet such as writing pressure with a blunt stylus, to cause the upper sheet and the base layer to adhere in the localized region of pressure to display the writing in the case of a label. The upper sheet can be, moved sufficiently to separate it from the base layer when a user's finger or thumb is wiped across the top surface of the upper sheet. The upper sheet also extends over a wipe-start region (2a) where the upper sheet and the base layer are not adhesive together, over which wipe-start region a user's finger or thumb may be placed from which to begin said movement to separate the upper sheet from the base layer. The upper sheet comprises a discontinuity (3a) across the upper sheet (across the direction of finger movement) within the wipe-start region (2a) or between the wipe-start region and the balance of the upper sheet which extends smoothly over the base layer, which assists in erasing the erasable product. |
