Heavy paper stock requires scoring before it can be folded cleanly
and accurately. Scoring is commonly done on a press cylinder with
score tape. The score needs to be simple and is usually done after
the image is printed on the previous cylinders. The score tape can
cause distortion in the registration. Simple scores for folds can
be done on folding equipment, this score is not as accurate as a
The highest quality score is a letterpress score. This score is
usually done with a round scoring rule on a flat bed cylinder press.
Always score so that the fold is made with the ridge or hinge on
the inside for minimum paper stretch. The thicker the paper, the
thicker the scoring rule must be to insure a clean fold.
1. If the job is laid out against the grain, it should be scored
to prevent cracking.
2. Folding with the grain might also require scoring.
3. If the fold runs through an area of heavy ink coverage, it should
4. Any job with a gatefold should be scored at the thumb edge to
prevent cracking and to make the job lie flatter.
5. 100# gloss text and all cover stocks should always be scored
regardless of grain direction.
6. For the best results in scoring, a letterpress channel score
be used. Additional
information available with the Complete Expanded versions
Register today for
the Complete Expanded version
Scoring is very critical if there is a need for high quality. There
are different methods of scoring: roller, crease, slit, hot, platen,
and string. Each having a different cost.
Roller scoring is not an acceptable method as the score does not
crease the stock with even pressure. When the pressure is set heavy
enough it may slit the stock in some places; when folded the stock
surface will break.
Scoring against the grain will always cause cracking on the surface
of the paper.
When scoring on top of solid printing the grain must be in the
same direction as the score. If it is not the paper breaks at the
score and the white center of the stock shows through.
When scoring over a printed surface, a double rule and string score
using a platen process should be used.
When making a wrap around cover with a fold up pocket remember;
you are scoring in two different directions. The grain should still
run along the backbone. Remember the opposing scored area will most
The stock that cracks the worst is a textured long fiber paper.
Due to the long fiber, it does not conform to a fold.
When scoring stock being used for wrap around covers. They are
scored: backbone scores (2) on the outside of the cover; fold/punch
score, on inside of cover.
You should have a dummy made up for a wrap around cover to show