| 摘要 |
A bottle for carbonated beverage is moulded from polyethylene terephthalate (PET) thermoplastics resin annd has a recessed base (14) formed by a standing ring (15) and an outwardly domed central panel (21). A ring member attached to the base by spin-welding receives the crest (19) of the standing ring and extends along the inner wall of the standing ring to the central panel so as to control distortion of the base when the bottle is pressurised. The ring member is made of PET so that the bottle is readily recyclable. |
