Capsule type retroreflective sheeting

摘要

This invention provides a capsule type retroreflective sheeting excelling in strength and longterm weatherability, the connecting walls, which partially connect the light-transmitting protective film and support film while retaining the spaces between the two films, being free of internal flaws such as deficiently filled portions and having uniform structure and shape. The capsule type retroreflective sheeting in which the connecting walls are formed by partially thermofusing and thermoforming the support film is characterized in that the support film is composed of a resin composition which contains a thermofusible rein and a crosslinking agent, said thermofusible resin having a shearing stress at 180 DEG C. within a range of 9x103x1x105 dyne/cm2, and which can form a non-fusible crosslinked resin having a shearing stress at 180 DEG C. of at least 1x106 dyne/cm2 after the crosslinkage.