B&C Technologies IM Series Industrial Ironer - Manual (Page 64)

Figure 5.14: Correct overlap for roll pad trimming
Single roll ironers are particularly sensitive to improper padding overlap because they don’t have
a second roll to press the gap left by the first roll.
If the padding is overlapped, goods will typically show a highly polished strip followed by a damp
or wrinkled strip across the width of the roll. In this case the padding should be trimmed. If too
much is trimmed an underlap condition will result.
If the padding is underlapped, goods will usually show a damp or unpressed strip across the width
of the roll. To correct this situation the bed pressure can be increased to accelerate the stretching
(and wear) of the roll padding.
Padding should be trimmed so that the tail of the last wrap makes 2 perfect layers of padding
around the cylinder. It is generally agreed in the industry that the padding should be trimmed
back as close as possible to or just before (5-10mm or 0.25-0.5 inches)the overlap point. If the
padding is trimmed before the overlap point a very small but generally unnoticeable underlap
condition will result. Refer to figure 5.14 on page 54 for correct roll pad overlap.
5.6.2 Roll Pad Discoloration (Yellowing)
The reason pads yellow prematurely is bad chemistry in the washer. The main problems are:
1. Bleach carry over – this is caused by too much bleach or lack of rinsing.
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