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Design of forming shoulders with complex cross‐sections
Author(s) -
McPherson C. J.,
Mullineux G.,
Berry C.,
Hicks B. J.,
Medland A. J.
Publication year - 2005
Publication title -
packaging technology and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 50
eISSN - 1099-1522
pISSN - 0894-3214
DOI - 10.1002/pts.691
Subject(s) - shoulders , engineering drawing , engineering , structural engineering , medicine , surgery
Vertical ‘form, fill and seal’ machines are used to produce bags for packing particulate or multiple objects. In operation, film is drawn over a forming shoulder and the good design of the surfaces of the shoulder is vital to the successful operation. This paper reviews underlying geometrical definition for the shoulder, corresponding to a filling tube with circular cross‐section. In practice, such cross‐sections occur frequently, but other variant shapes are becoming increasingly common. A method is discussed and demonstrated for extending the approach to allow tubes formed from circular arcs and straight line segments to be handled. Copyright © 2005 John Wiley & Sons, Ltd.