| 摘要 |
A mould (1) has longitudinal axis X forming two half shells (3,4) able to be joined along a plane (PJ2) to form a cavity of elongated transversal section with a major axis (A) and a minor axis (B), the plane (PJ2) being perpendicular to the major axis. Each half shell (2,3) consists of at least 2 distinct longitudinal parts (5,6;7,8) joined along at least a joint surface (100) with each joint surface being defined by two opposite faces (16,17) of adjacent parts. At least one face presents follows which define with the other face at least are thin window (10,11,12) to allow during blowing of the object, escape of air from the surface. Also claimed is the method of blow moulding a thermoplastic container by (i) forming a tubular blank; putting it into the blowing mould (ii) blowing the blank to flatten it against the inner mould rolls and (iii) then downwardly it after cooling. |
