Man Mat
C&K Extrusions Ltd
12 Drayton Road
Tonbridge
Kent
TN9 2BE
United Kingdom
T +44 1732 369698
F +44 1732 771009
Technical Information
Man Mat's creasing matrix system is designed to be easy to use. This section helps you understand the basics of using creasing matrix so that you can maximise the potential of Man Mat creasing rule systems from your very first use. If you have any specific technical queries about Man Mat's products, please do not hesitate to contact us.
Using Creasing Matrix
Determining the correct creasing/cutting rule heights:
The difference between the cutting rule height and the creasing rule height must include an allowance of 0.25mm (0.01") for the thickness of the steel matrix base and pressure sensitive adhesive.
This is determined as follows:
CUTTING RULE - BOARD THICKNESS - BASE ALLOWANCE = CREASING RULE HEIGHT
For example :
Cutting rule height = 23.8mm
Board thickness = 0.45mm
Base allowance (constant) = 0.25mm
23.80 - 0.45 - 0.25 = 23.10mm creasing rule height
A creasing rule underheight is always preferable to overheight.
An underheight creasing rule can always be adjusted using Sure Shim patch tape.
REMEMBER – adjust the creasing rule height to be 0.25mm lower than the allowance for the board thickness.
Determining the correct channel width:
The correct size channel width for creasing solid board is calculated as follows:
2 x BOARD THICKNESS + CREASING RULE THICKNESS = CHANNEL WIDTH
For example :
Board thickness = 450 µ (0.45mm)
Creasing rule width = 2pt (0.71mm)
(2 x 0.45) + 0.71 = Channel Width
0.9 + 0.71 = 1.61mm channel width
As theoretical channel width = 1.61mm, check available range of matrix and select closest match. In this case the nearest SureScore matrix is Yellow 60, a channel width of 1.60mm.
When determining the correct channel width for corrugated boards, the same rules apply, however the compressed thickness of the board should be used.
It is strongly recommended to increase the channel width by at least 0.1mm from the calculated size for cross grain creasing, particularly when creasing brittle, coarse fibre boards. Within the Sure Score creasing matrix system, there are many steps of 0.1mm specially for long grain/cross grain creasing.
For specific technical information about our individual products, please visit our downloads page.