| 摘要 |
<p>Blow Moulded Container and Manufacture Thereof A method of forming a blow moulded container in the form of a tub, the method comprising the steps of: providing an injection moulded preform (2) composed of a biaxially-orientable thermoplastic material, the preform being substantially planar; heating the preform; and stretch blow moulding the heated preform within a mould cavity to form a tub having a bottom wall and an annular sidewall having an upper edge, the tub comprising biaxially oriented thermoplastic material in the annular sidewall and at least an outer portion of the bottom wall, the stretch blow moulding step using at least one stretch rod (12) to engage an inner side of the preform and axially to stretch at least a part of the preform prior to blowing a pressurized gas against the inner side which urges the opposite side of the preform radially outwardly against the mould.</p> |
