A rotary moulder sets the weight and shape of the unbaked dough pieceby filling an engraved die and transferring the piece to the next conveyor. The biscuit's finished weight also depends on baking and moisture loss. When a pack-weight problem appears, measure both stages before changing the moulder.
Begin with the dough
Compare a stable production run with the run showing variation. Record mixing time, dough temperature and the interval between mixing and forming. Changes in dough consistency can alter cavity filling or release even when machine settings stay the same. Record the batch and sample time so a process change can be distinguished from a machine adjustment.
Observe the whole moulding sequence
Check whether dough reaches the feed roll evenly across the width. Then look for cavities that fill incompletely, surplus dough that is not removed consistently, and pieces that stretch or remain in the die during extraction. The exact adjustment points depend on the installed moulder, die and extraction arrangement, so work from its operating procedure.
Sunbeam describes independently driven elements in its rotary moulding equipment. That gives the engineering team variables to set for a product, but it does not remove the need to control the dough and verify the result on the line.
Sample in a way that reveals the pattern
Weigh unbaked pieces at planned intervals and from the left, centre and right of the working width. Record both the average and the spread, plus the dough batch and moulder settings. Repeat the check after baking if the commercial specification is for finished biscuits. A stable centre sample can hide a width-related issue; a stable pre-bake result can still be followed by a baking variation.
Change one setting at a time, record its previous value and allow the line to settle before taking the next sample. A series of undocumented adjustments makes the cause harder to find.
Keep an approved starting setting
For each product, retain the die identification, dough condition, initial machine settings, sampling method and agreed weight range. When reviewing a new line, ask for a trial using the intended formulation and die design, with the point of measurement stated in advance.
Next step: share the recipe characteristics, target dimensions, unbaked and finished weight specifications, and current sampling data with Sunbeam when discussing a soft dough line, through the contact page.