A case conversion process has been investigated with a view to understanding and
ultimately improving the case quality. In particular, fishtailing, or the squareness
of case, has been studied in relation to creasing, folding and gluing. The process
has been optimized in terms of fishtailing on the individual panels. Uni-directional
fishtailing results have been attributed to the existing method of folding. To this
end, the folding mechanism has been studied and two innovations, generic to any
continuous folding operations, have been suggested: the coil cam and the twin cam. [Continues.]
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.
Science and Engineering Research Council (research project grant no. GR/F 73816).