| 摘要 |
<p>PURPOSE:To have excellent sealing properties and form few pin holes by inserting a tubular flow path opening member for transfusion liquid into a parison, blow-molding the parison holding therein the flow path opening member, and forming a plurality of compartments isolatedly containing the different kinds of transfusion liquids. CONSTITUTION:A split type mold 2 is set to a parison 1 and, simultaneously, blow pins 3, 4 are inserted inside the parison 1 from both the upper and lower sides thereof. The blow pin 3 has a double cylindrical structure, and an air outlet port 6 is provided on a side face of an inner cylindrical member 5 which constitutes the interior of the double structure and which can be slidably stuck out and retracted from the blow pin 3. A flow path opening portion 7 for transfusion liquid is provided at the top end of the inner cylindrical member 5. Air is blown in through the respective air outlet ports 6, 8 of the blow pins 3, 4 to expand the parison 1 and, thereafter, the blow pins 3, 4 are withdrawn. In this case, since resin adheres to the flow path opening portion 7 in the plane, sealing properties are excellent, and liquid is not easily leaked.</p> |
