BOTTLE BODY HAVING GRIP MADE OF SYNTHETIC RESIN AND MOLDING METHOD THEREOF

摘要

PURPOSE:To prevent generation of flexible deformation in the incorporation part of a bottle main body side and to stabilize and strengthen incorporation of a grip for the bottle main body. CONSTITUTION:A grip-bearing bottle body made of synthetic resin is constituted of longitudinal projection parts 5 provided with the longitudinal groovelike engagement grooves 7 at both sides, a bottle main body having engagement hole parts 8 provided with engagement edge parts 9 in the opening parts and a grip 11. In the grip 11, a pair of incorporation beam pieces 13 engage the engagement projection pieces 15 with the engagement grooves 7 by holding the longitudinal projection parts 5 from both sides. Engagement projection pieces 16 are projected to the tip faces of the incorporation beam pieces 13 and so engaged that the engagement edge parts 9 are engaged with the engagement grooves of the base end parts and are not pulled out to the engagement hole parts 8. Strengthened and stabilized incorporation is achieved and maintained by engagement of the engagement hole parts 8 and the engagement projection pieces 15 and engagement of the engagement hole parts 8 and the engagement projection pieces 16.