How to Make the Paper Box Stronger?

The box feels terrible, has low stiffness and the effect is not good...though it is made with high-quality FBB PAPER, why can't it meet the standard? One of the critical criteria is easily overlooked, and that is paper grain direction.
In the following situations, it is easy to cause a poor boxing effect due to the grain direction of the paper. So let’s test it yourself:
1. Purchasing paper only pays attention to price and usage, does not understand the precautions for paper processing, and does not pay attention to the problem of paper grain direction when placing an order;
2. Most of the products processed by the customer are square or mainly square boxes, and the requirements for the grain direction are not high;
3. The customer's designer did not notice the relationship between the paper grain direction and the box-forming effect;
4. Customers change the grain direction at will during use, or due to order changes, the old order paper does not pay attention to the grain direction problem when using it on the new order;
5. The customer did not have enough paper in the paper-cutting process, and cut with small-sized paper, which caused some paper grains to be inconsistent with other papers;
6. The customer did not re-set the paper after the revision, resulting in a change in the grain direction.
So how to identify the paper grain direction? Here are 3 practical tips, come and try.
(a) Paper in sheet: The grain direction of the paper is perpendicular to the width side. When placing an order, you should pay attention to the width in front and the length in the back.
(b) Paper in reel: The grain direction of the paper is perpendicular to the side where the width is.
(c) Use a flashlight to light parallel to the paper surface, and observe the back of the paper at 360°. You can see that it is parallel to the paper grain direction, and there are obvious stripes.

Whether FBB paper is used to make boxes or cupstock is used to make paper cups, the grain direction of the paper is always a key factor affecting the final quality of the product.