| 摘要 |
<p>A material having a high degree of slipping properties which make even PET bottles slip thereon, press moldability which enables the material to withstand even multistage ironing, resistance to wearing by paper, snow slipping properties, etc. is stably supplied at low cost. The material is a surface-treated metal sheet which comprises a metal sheet and formed on one or each side thereof a continuous coating film (A) having an average thickness of 20 µm or smaller, the coating film containing a solid lubricant (B) having a major-axis length which is at least 3 times the average film thickness. Also provided are: the surface-treated metal sheet containing as the solid lubricant a fluororesin having a major-axis length which exceeds 20 µm when viewed from a direction perpendicular to the coating film, the number of the fluororesin particles is 10 or larger per mm<2>; a lubricating metal sheet which is obtained by mixing an ingredient for the continuous coating film (A) with the solid lubricant (B) having a major-axis length at least 3 times the film thickness and applying the mixture to a metal sheet to hold the solid lubricant in the coating film by orienting the solid lubricant in flat arrangement by utilizing the areal pressure during the application; and a process for producing the lubricating metal sheet, which comprises irradiating a fluororesin synthesized, e.g., by suspension or emulsion polymerization with a radiation to make the fluororesin have a lower molecular weight, mixing this fluororesin with a water-compatible resin, applying the mixture with stirring to a metal sheet, and drying it.</p> |
