| 摘要 |
PURPOSE:To mold blank materials with uniform thickness by diffusing and shunting a core component polymer and a sheath component polymer by a long groove and annular grooves respectively and guiding them wholly to a molding slit and a molding exit. CONSTITUTION:The core component polymer A which is fused is injected into a core component polymer injection opening 2 and the sheath component polymer B which is fused is injected into a sheath component polymer injection opening 3. Consequently, the core component polymer A is guided to the molding exit 8 through the thin molding slit 5 while diffused and shunted to the right and left by the long groove 4. At the same time, the sheath component polymer B after being diffused and shunted by a 1st annular groove 6 is dispersed and flows in a 2nd annular groove 9 through respective small holes 7 and then the polymer while receiving the drawing resistance of a small gap flows in the molding exit 8 from the entire periphery and exits while covering the core component polymer A. Consequently, the sheet type photoconductor C which has the uniform-thickness sheet core material (a) covered with the uniform- thickness sheath component polymer (b) is obtained. |
