| abstract |
The present invention relates to a plastic sheet manufacturing method, and to a plastic sheet manufacturing method excellent in moldability and durability. To this end, the plastic sheet manufacturing method is 100 parts by weight of polyethylene terephthalate (polyethylene telephthalate, PET) resin, 2 to 4 parts by weight of polyurethane dispersant, polyethylene dioxythiophene polystyrene sulfonate (0.1 ~) 0.2 parts by weight, 0.4 to 0.6 parts by weight of polystyrolsulfonic acid, 3 to 5 parts by weight of N-methyl-2-pyrrolidone, triethyl amine 0.1 A first step of preparing a mixed composition by mixing 0.3 parts by weight, 42 to 45 parts by weight of isopropyl alcohol, and 50 to 52 parts by weight of water; Preheating the mixed composition; A third step of removing moisture of the preheated mixed composition; A fourth step of heating the mixed composition from which the moisture is removed; A fifth step of removing foreign substances from the heated mixed composition; A sixth step of stretching the mixture composition from which foreign substances have been removed while cooling to prepare a plastic sheet; And a seventh step of applying silicone to the plastic sheet and then drying it. |