【摘要】 <正> 一、前言 在保温瓶瓶胆生产中,一套毛坯经割小瓶口、割大瓶底、套瓶、塞石棉粒形成夹层后,应将大瓶底封接成圆底,俗称拉底。这是保温瓶瓶胆生产的主要工序之一。从手工拉底、半机械化立式拉底发展到机械化卧式拉底,拉底工艺要求愈来愈严,需要从理论上作指导。过去在有关文献中,只笼统地说明瓶坯需要加热到软化状态,没有对卧式拉底与立式拉底工艺更多还原

【Abstract】 The relationship between glass viscosity and the operation procedure of bottom sealing and the new horizontal bottom sealing technology has been discussed in this paper. In the light of production practice a new horizontal bottom sealing method with Chinese feature has been proposed. The function, structure and distribution of gas burners in each station and the requirements of blank quality were also discussed in this paper.更多还原