Creasing is what?

Creasing is the process of applying straight grooves to a printed sheet. They are applied to the paper in the form of pronounced scars, which run along the lines of folding.

The need for creasing is determined by considerable simplification when cardboard or paper with a density of 150 g / m ^{2 is} folded along the line. The groove produced during the creasing process is called "big" and allows you to easily and evenly bend the sides of the sheet.

Creasing is an operation that can be performed not only with paper, but also with various materials. For example, laminated sheets, interlaced cardboard, plastic sheets, many kinds of film are subject to creasing.

The difference between creasing and folding

Folding, perforation and scoring are the processes used in the production of advertising and stationery products. These processes are indispensable for the production of invitations and entrance tickets, gift boxes and packages, as well as for the production of a large number of printed materials.

In the printing industry, the meaning of the word "creasing" should not be confused with folding. These processes are completely different, performed on different equipment and in a certain sequence.

As a rule, scoring is the process preceding folding. Conducting creasing makes it easier to work with folding.

Folding method is achieved the formation of a notebook or other printing products from already printed sheets. Folding is possible to achieve successive folds. Using this method, you can easily create from a few notebooks a brochure, book or magazine.

The result of folding is influenced by the thickness and volume of the paper, the moisture and direction of the fibers to the fold, the number of folds and the method of folding.

When the creasing is performed

Creasing is replacing the usual bending technology with the possibility of distortion of the picture shown on the sheet or when using cardboard products. Determine its need at the pre-print level to make special labels in the layout process.

Creasing is a process that protects the folding area from cracking paint and gives the printed edition a neat appearance.

The action is performed with the help of blunt disc knives or rectangular plates installed on a scoring machine. In the working process, the machine induces and compacts the material.

The scoring equipment is divided into rotary and impact equipment. Shock is usually used in small-circulation production, and rotary equipment is indispensable for large-scale works.

Hand Creation Method

In the case of the location of the bigam line perpendicular to the paper fibers, it is necessary to apply hand creasing. Using the manual method allows you to achieve clear fold lines and protect the sheet from unwanted creases.

Hand-creasing is used when producing products in small print runs or when issuing an exclusive edition. The manual method of creasing, in accordance with the labor, is somewhat more expensive than the machine one.

Tool for creasing

Conventionally, the creasing tools differ on the side of the fold, that is, there are tools for drawing a fold line from the inside of the sheet or from the outside.

Board for creasing Sold separately, and it can be purchased not only by printing organizations. Easy to use and no restrictions on the format of the sheet makes it possible to use it for a large format.

The board includes a special triangle, used to produce envelopes, different in length and width. The board contains marked markings.