Scoring & Creasing

 

Scoring and creasing are two different processes used to create even creases in thick paper or card stock to assist with folding.

 

“Scoring” creates a depression when a metal (male) rule that hits the paper with a “flat” steel or rubber surface behind it. Scoring happens on the inside of the fold and simply weakens the sheet to aid in folding.

 

“Creasing” uses a male and a female die to create the crease. There is a recessed area behind the papertoallow the board to create a “paper board hinge”. Creasing refers to the “internal de-lamination” (layer failure) of a sheet by compression along the line where the folding needs to occur.

 

When the sheet is bent (folded) at the crease, all the outward force that normally would split outwards or “crack” the sheet is directed inwards towards the weak, delaminated line. As the fold continues, the sheet further de-laminates internally and a rounded bead is formed on the inside of the fold, absorbing all the force, while the outside of the folded piece remains smooth and unbroken.