| 摘要 |
PURPOSE: To obtain a heat-sensitive recording material capable of carrying out precise printing such as bar code printing without any unevenness of color development by coating a nonwoven fabric having a specific surface roughness and a specified air permeability as a substrate to be coated with a recording liquid for heat-sensitive recording. CONSTITUTION: This nonwoven fabric is formed by carrying out the flash spinning of a high-density polyethylene, depositing the resultant fibers on a wire net, providing fibrillated reticulated fibers, then passing the formed fibers through heated embossing rollers and further treating the fibers by a felt calender. The resultant nonwoven fabric has a surface roughness of at least one surface within the range of 0.3-0.9 and an air permeability within the range of 10-1000sec/100cc. Furthermore, the heat-sensitive recording material is prepared by coating the nonwoven fabric as a substrate to be coated with a coating liquid for an undercoating layer, hot-air drying the coated liquid, then coating the prepared nonwoven fabric with a coating liquid for a heat- sensitive recording layer and subsequently hot-air drying the coated nonwoven fabric. The obtained heat-sensitive recording material has >=50sec surface smoothness and <=0.7 surface roughness. |
