| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a resin sheet suitable for an optical use like the front panel of a display or the like and reduced in the content of foreign matter. SOLUTION: A polymerizable raw material is filtered to be injected in a cast mold, which is assembled under an atmosphere with a cleanliness of 10,000 or below obtained by an HEPA filter or the like, under the same atmosphere used in the assembling of the cast mold and polymerized and cured to manufacture the resin sheet. It is preferable to filter the polymerizable raw material using a filter medium capable of removing foreign matter with a particle size of 5μm or above. COPYRIGHT: (C)2005,JPO&NCIPI |
