| 摘要 |
PROBLEM TO BE SOLVED: To prevent a synthetic resin material of a monomeric substance such as a monomer from sticking easily to the periphery of a charging device, by sucking and removing the gas containing the material which is produced from a molten sheet. SOLUTION: In these method and equipment for forming a sheet, a synthetic resin material in a molten state A is discharged to be a molten sheet B continuously from a discharge port 1a of a slit die 1 and charged with electricity by an action of electric discharge of a charging device 3 and the molten sheet B is moved in rotation in close contact with the external surface of a cast drum 2 and made a hardened sheet. On the occasion, the gas containing the synthetic resin material of a monomeric substance such as a monomer is sucked and removed between the discharge port 1a of the slit die 1 and the charging device 3. |
