公开(公告)号：US3855037A

公开(公告)日：1974-12-17

申请号：US5952970

申请日：1970-07-30

Applicant: BASF AG

Inventor： IMHAGEN K ,  WEIDNER W ,  KASPER W ,  MANHART G

IPC: B65B51/32 ,  B29C65/10 ,  B29C65/74 ,  B29C65/78 ,  B31B29/60 ,  B31B37/60 ,  B65B51/18 ,  B65B51/20 ,  B32B31/00

CPC classification number: B65B51/20 ,  B29C65/103 ,  B29C65/749 ,  B29C65/7873 ,  B29C66/1122 ,  B29C66/348 ,  B29C66/3492 ,  B29C66/43121 ,  B29C66/4322 ,  B29C66/71 ,  B29C66/73921 ,  B29C66/8181 ,  B29C66/83413 ,  B29C66/836 ,  B29C2793/0081 ,  B29L2031/7128 ,  B65B51/18 ,  Y10T156/1026 ,  Y10T156/1067 ,  Y10T156/1069 ,  Y10T156/108 ,  Y10T156/12 ,  Y10T156/13 ,  B29K2023/06

Abstract: Apparatus which welds cut lengths of a thermoplastic film-tube in the manufacture of sealed sacks, said apparatus including: motor-driven guide members such as a pair of metal bands which grip a flat length of the tube transversely just below a cut open end thereof to provide front and rear side edges of the tube projecting from the guide members a distance approximately equal to the intended breadth of the weld, said guide members being arranged to advance the resulting projecting or exposed two-layer strip of tube end-face edges through the welding apparatus; a resistance member to contact the advancing strip to fold open its front side edge or leading edge as it is being advanced; knife means in the path of the advancing strip to cut it first at its front side edge and subsequently at its rear side edge; guide plate means to then fold apart the advancing strip; heating means to heat the inner surfaces of the folded apart strip to a fusing temperature; and finally means to press the two-layer strip back together to complete the weld.

Abstract translation: 在密封袋的制造中焊接热塑性薄膜管的切割长度的装置，所述装置包括：马达驱动的引导构件，例如一对金属带，其横向地夹紧在其切割开口端下方的管的扁平长度 以提供管的从引导构件突出的前侧和后侧边缘大约等于焊缝的预定宽度的距离，所述引导构件被布置成使所得到的突出或暴露的两层管端面边缘通过 焊接设备; 阻挡构件，用于接触推进的条带以折叠打开其前侧边缘或前缘; 刀具在前进条的路径中，首先在其前侧边缘处，然后在其后侧边缘切割; 引导板意味着将前进的条折叠起来; 加热装置，用于将折叠的条带的内表面加热至定影温度; 最后意味着将双层钢带压在一起以完成焊缝。