发明名称 |
APPARAT TIL FREMSTILLING AF POSER AF TERMOPLASTISK MATERIALE |
摘要 |
Apparatus for severing bags from a two-ply web of thermoplastic material. The apparatus includes web guide rollers defining a nip, and a plurality of peripheral grooves in the guide rollers in which upper and lower air directing tubes are positioned to guide a web as it passes downstream of the feed rollers. A continuously transversely moving severing knife is provided downstream of the feed rollers and below the plane defined by the moving web. A pair of welding jaws are provided adjacent the cutting knife to grip the web in a plane below the web movement plane to weld the plies of the web together and to deflect the web into position for providing a transverse cut therein by means of the severing knife. A pivot lever is provided to pivot downstream ends of the lower air directing tubes in a downward direction to prevent interference between the downwardly deflected web and the downstream ends of the air directing tubes. A set of clamping jaws is provided on the opposite side of the severing knife from the welding jaws in order to securely hold the web during the cutting operation. |
申请公布号 |
DK419986(A) |
申请公布日期 |
1987.03.04 |
申请号 |
DK19860004199 |
申请日期 |
1986.09.02 |
申请人 |
WINDMOELLER & HOELSCHER |
发明人 |
ACHELPOHL, FRITZ;SIMON, HELMUT |
分类号 |
B31B19/14;B31B23/00 |
主分类号 |
B31B19/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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