1. Folding / Creasing / Cracking Timo Roine
UK 11/05 TRo

2. SHEET-FED OFFSET PAPERS
HSWO / SHEET
Absolute moisture content followed when producing HSWO papers and relative humidity when producing sheet fed papers
ABS. 6 5
SHEET-FED OFFSET PAPERS
MEASURED PROPERTY 4
MEASURED PROPERTY 3
HSWO 2 1
RH % 20 30 40 50 60
UK 11/05 TRo

3. X OK OK Cracking Creased before folding Not Creased
Same paper in these tests
UK 11/05 TRo

4. Creasing ( score) Folding this way The only and right way to do
creasing before doing folding
Creasing this side
UK 11/05 TRo

5. Creasing/scoring
Creasing and folding conditions as close to paper RH as possible,
i.e. RH %, more dry condition, paper will break more easily.
170 gsm and over, is recommended to crease before folding.
Crease line,
Must be exactly middle of counterpart
Counterpart,
groove is ½ - 1 mm wider than crease line.
The thicker the paper the bigger the difference
UK 11/05 TRo