The Warping of children's book printing in China

Nowadays, society is paying more and more attention to children's enlightenment education, and the children's book printing company in China is booming because children's printed book is an important carrier of cultural support.
Because of the board book is durability, moisture-proof and wear-resistant, easy to spread, etc., children's book printing in China prefers board book printed products.
At the same time, children's board books also are especially suitable for developing various creative products for children's education.

However, the warping of the book pages has made many book printing companies in China distressed. After long-distance transportation of children's board books, warping is uncontrollable.

Why board book will warp in children’s book printing?
Material, environment, and packaging methods are the factors that cause the deformation of children's board books. In terms of appearance, the warping deformation of children's board books can be divided into two types: straight warping and bending deformation.

1.Straight Warping
Straight up and warping deformation is manifested as the cover and inner pages are opened at a certain angle, but they can all be kept straight.
After Children’s book printing, the Board books are usually treated with UV coating and then indented. If the size and shape of the indentation line are not suitable, the indentation direction is not parallel to the cardboard texture, or the cover ridge is too small. It may cause the cardboard book to appear straight and upturned after the book is finished, even if it does not happen after the book is finished, it will appear straight up and upturned after flipping and cannot be restored.

2.Bending Deformation
Bending deformation is manifested by bending deformation of the cover or inner page, which cannot be kept straight.
This phenomenon usually occurs after delivery to the customer. The main reason is that the moisture content of the cardboard book is too high or too low. When the external humidity is too large, the cardboard book will expand due to moisture absorption or shrink due to moisture loss. As a result, the cardboard book is bent and deformed.

How to solve it when book printing in China?
1.For Straight Warping
Adopting a back-indentation line and increasing the thickness of the spine by 0.5mm larger than the thickness of the book block can better control the cardboard book from being straight and warped.
In addition, the choice of the indentation line is also very important. Usually, when using a single-end thread, the size of the indentation line should be selected according to the paper specifications. You can choose according to the comparison table of the book printing company in China, For example, if cardboard with a basis weight of 350g/m2, use 0.5mm×1.5mm indentation line.

2.For Bending Deformation
After printed children's books, the book has high water content. Therefore, it is very important to control the moisture content of the cardboard in children's book printing to avoid warping and deformation of the finished book.
After the book is printed and before packaging, the children's book should be placed in a constant temperature and humidity environment to keep the water content of the cardboard book stable.
At the same time, if children's board books need to be displayed, customers should be advised to place them horizontally. If they are placed vertically, even if the water content is normal, they may be bent and deformed.

You need to choose a reliable book printing company whatever which cover materials you want to use. A professional book printing company in China will provide high-quality printed products, a prompt sales team, and a reasonable printing price for you such as chinaprintingmasters.com.
For this professional book printing company in China, they can master the process requirements, specifications,s and parameters to avoid problems effectively and printing high-quality children's book products.
You can determine the specialization of a printing company through the above information and get your reasonable book printing online quote.