Welcome to ManMat Ltd

Sure-Score Technical

Welcome to the technical support section of the ManMat website.

If you want to speak directly to a technical representative, you can call us on +44 0(1)624 823888 during normal working hours, or fax us on +44 0(1)624 823966.

You can send an e-mail to: technical@manmat.com or contact us by post at the usual address.

In the near future we will be posting both our full product brochure and the Sure-Score Channel Width & Selection Chart as downloadable PDF files.

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 of specify 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 microns(0.45mm)

Creasing rule width = 2pt (0.71mm)

(2 x 0.45) + 0.71 = Channel Width

0.9 + 0.71 = 1.61mm

As theoretical channel width = 1.61mm, check available range of matrix and select closest match. In this case the nearest Sure-Score 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.

ManMat Limited - Home of the Sure-Score Creasing Make-ready System.

"Celebrating 20 years of supplying Creasing Matrix in 2005"

click here for the Sure-Score channel width calculator