| 摘要 |
<p>PURPOSE:To prevent a spider mark from being generated and forming a multi- layer parison by allowing a main material and a secondary material resin to be guide into a storage chamber, to proceed to the interior of the storage chamber, passing through an annular resin route and both outer layer and inner layer resin, and a secondary material resin to become laminated and combined together. CONSTITUTION:A main material resin in a molten state which is extruded continuously from an extruder 51 for main material resin is formed into an annular shape by an annular manifold 71 for the inner layer of a main material formed in an accumulator head 49, through a route 52a, and is supplied to a resin storage chamber 50, passing through a main material resin route 52 for an inner layer. In addition, a secondary material resin is formed in an annular shape by an annular manifold 73 for secondary material formed outside the main material resin route 52 for an inner layer through an extrusion machine 53 for a secondary material, and then is conducted to an annular slit 74 for secondary material near a discharge orifice 70 provided at the bottom of the storage chamber 50, passing through a secondary material resin route 54.</p> |
