TUBE BOTTOM FOR HEAT AND/OR MASS EXCHANGERS, ITS UTILISATION, AND METHOD OF ITS MANUFACTURE

摘要

Injection-moulded end plate of thermoplastic for heat and/or mass exchangers, with at least 25 through-openings for accommodating tube ends, characterised in that the openings (2) have a hydraulic diameter of not more than 3 mm, and in that the minimum web width (s) is not more than 0.4 mm between adjacent openings (2). The thickness of the end plate is between 3 and 10 mm. An end plate of this type, which is preferably suitable for the compact arrangement of tube ends and which is therefore used for the manufacture of mass and/or heat exchangers, is produced by an injection moulding method in which the melt in the injection mould is first of all distributed over the cross-sectional area before it is pressed into the region of the actual end plate. ……