In the world of printing, many processes take place even before the finished product reaches the customer. One of these is creasing. This is a technique that often remains invisible to the end user, but has a huge impact on the aesthetics and durability of the printed material.
Creasing involves making a controlled indentation in the paper or cardboard at the point of future folding. This allows the material to be folded without cracking, distortion or damage to the print. In practice, this means that the fold looks even and professional.
What exactly this process consists of
The process involves mechanically deforming the structure of the paper along the bend line. Unlike ordinary paper folding, the material is not broken “by force”, but prepared for folding.
In a bookbinding machine, a special bar (known as a crease) presses the material against the die, creating a line of weakening. This allows the paper fibers to lay along the fold instead of breaking.
The effect is especially important for:
- thick cardboard boxes,
- chalky papers,
- materials with foiling,
- catalog and brochure covers,
- invitations or folded cards.
In such projects, creasing determines whether the product will look professional.
When creasing is necessary
Not every material requires this process. Thin offset papers can often be folded without prior preparation. However, the higher the grammage, the greater the risk of paper breakage.
Most often creasing is used for papers above about 170-200 gsm. With paperboards of 250 gsm and above, it is actually standard.
Typical products where the process is used:
- catalog covers,
- offer folders,
- folded invitations,
- greeting cards,
- cardboard packaging.
Without this process, the bend could look uneven or cause the ink to crack.
Creasing and Design Aesthetics
One of the biggest advantages offered by creasing is the improved aesthetics of the finished product. The bend line is precise, and the material is laid out evenly. As a result, the publication opens smoothly and maintains its form.
This is especially important for premium projects. In invitations, marketing materials or elegant packaging, even a small crack in the paper can spoil the whole impression of quality.
Creasing ensures that the edge of the fold remains smooth and the print is not damaged.
What to keep in mind when designing
Although creasing is carried out by the printing house, the design should take into account the places of creasing already at the stage of file preparation. Creasing lines affect the layout of graphic elements and texts.
It is worth paying attention to several issues:
- Maintaining adequate margins at the bend line,
- avoiding thin lines exactly at the creasing point,
- taking into account the thickness of the material when designing covers,
- proper preparation of the design with multiple folds.
Thus, creasing will not adversely affect the composition of the design.
Summary
Creasing is one of those bookbinding processes that remain invisible, but are of great importance for the quality of printing. Thanks to it, paper or cardboard can be folded without damage, preserving the aesthetic appearance of the material.
If the design contains bends, especially with thicker paper, creasing becomes an essential part of production. It is such details that determine whether the finished print looks professional.