Synthetic resin made thin-walled bottle and method of producing same

Abstract From the Canadian patent

This invention provides a thin-walled synthetic resin bottle a, tubular intermediate therefor and a method of producing such thin-walled bottle. The thin-walled bottle has ribs at least at its bottom portion and the bottle bottom is raised up frusto-conically or shaped undulatory. The tubular intermediate is previously formed with ribs which become thinwalled protuberant ribs after blow molding. The thin-walled bottle is produced by blow-molding the ribbed tubular intermediate.