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1.发明授权DENTALFLÜSSIGKEITSABSAUGER AUS GEWICKELTEN, BIOLOGISCH ABBAUBAREN MATERIALSCHICHTEN SOWIE VERFAHREN ZUR HERSTELLUNG 失效用于生产可生物降解缠绕材料层和方法的DENTALFLÜSSIGKEITSABSAUGER
公开(公告)号：EP0742700B1
公开(公告)日：1998-04-08
申请号：EP95906264.7
申请日：1995-01-21
CPC分类号： B31F1/205 , A61C17/043
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2.发明公开DENTALFLÜSSIGKEITSABSAUGER AUS GEWICKELTEN, BIOLOGISCH ABBAUBAREN MATERIALSCHICHTEN SOWIE VERFAHREN ZUR HERSTELLUNG 失效用于生产可生物降解缠绕材料层和方法的DENTALFLÜSSIGKEITSABSAUGER
公开(公告)号：EP0742700A1
公开(公告)日：1996-11-20
申请号：EP95906264.0
申请日：1995-01-21
CPC分类号： B31F1/205 , A61C17/043
摘要： A flexible paper tube, in particular a one-way saliva suction unit for use in dentistry, consists of two tubular sections joined together by a concertina section. It is characterized by the fact that the paper tube (2, 6) consists of several layers, in particular 3 - 15 and preferably 4 to 10 layers, of paper, each layer having a thickness of 0.07 - 0.35 mm and preferably 0.1 - 0.2 mm, the thickness of the tube wall being 0.2 - 2.5 mm and preferably 0.5 - 1.0 mm. The fluting and folding of the concertina section is done preferably before the glued paper layers set. In the paper tube (2, 6) according to the present invention, the bending of the concertina section prevents any restriction in the passage in the tube.
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