Trouble Shooting Guide; Section 1 - Corrugated Case Quality & Specifications - Pro Mach Wexxar BEL Series Operation & Service Manual

B E L 2 5 2 F u l l y A u t o m a t i c U n i f o r m C a s e T a p e S e a l e r

Trouble Shooting Guide

Section 1 - Corrugated Case Quality & Specifications
Corrugated case quality is a major contributor to smooth machine running and output quality. The
following points will help determine if you have a case size or quality problem:
•
Case dimensions. Check to see that products fill the case efficiently and do not bulge (over-fill) or
under-fill the case. Consult your corrugated supplier for assistance. A correctly filled box will help
the automatic process by supporting the case during flap folding and the top flap sealing. Using the
right size of box and weight of material can often result in cost savings.
•
Score (fold) lines. Make sure that the scores all in your cases are as well defined as possible to help
with the automatic folding process. This is one of the most common causes of poor case closing
performance Your corrugated case supplier can help make sure that correct score pressure is used for
your case specification.
•
Corrugated case weakness. The box manufacturing process can damage the fluted construction of
corrugated board. Points to watch for:
1. Overall crushing of the corrugated flutes, causing the box to have a 'soft' and limp feeling.
This condition results in poor machine handling and may not give your product the required
protection.
2. Selective bands of crushing, usually parallel to the box flutes, can cause failure lines down
the box and result in poor machine performance.
Store flat cases in dry conditions and on a flat surface. Be careful not to stack excessive weight on
cases as crushing of the flutes will result.
•
Cases "squareness". Check the corner joint where the manufacturer glues the flat case together, it
can often be out of alignment making the case wider at one end than the other or twisted from end to
end. It can cause machine jams and poor quality.
•
Flap corner slots. Corner slots should be as wide as possible so that the flaps can be manually or
automatically folded with a minimum of interference.
•
Flaps overlap or are gapped (major flaps). They are a result of incorrect flap lengths. Fold a box
by hand to check that flaps meet neatly at the center.
65-06-11 5/18/2007
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