Humidity has a significant impact on the quality of Corrugated Boxes. It is one of the factor which cannot be controlled. And most importantly you can do nothing to prevent your boxes from getting into a humid environment. After all what can you do to control humidity when in transit? Especially during monsoons?
Believe it or not – Moisture is the Invisible Culprit which affects the quality of Corrugated Boxes in all parts of the World. The quality deterioration is very much visible when you work with lower quality paper, while if you work with very high quality paper, you may always think that your quality is absolutely perfect, given the fact that you get no complaints from your customers. But the fact can be that your quality is far away from what it should have been with the combination of papers used.
Moisture in the atmosphere is one of the major factors which has a tremendous impact on the Quality of Corrugated Boxes. While it is necessary to have some amount of moisture (approx. 6% – 7%) to ensure proper creasing and avoid cracking, high levels of moisture content can have negative impact on the quality of boxes.
It is practically impossible to stack the boxes horizontally, given the space constraints and handling problems. Hence the boxes have to be stacked vertically. When the boxes have more moisture content, some of the moisture obviously gets absorbed by the flutes of the board. This absorption makes the flutes soft. When the boards with these soft flutes are stacked vertically, the flutes get pressed and reduce in height. This leads to caliper loss.
Again, it is the flutes of the board that impart Compression Strength (C.S). Also when the flutes become soft, or in other words lose its stiffness, Bursting Strength (B.S) of the board reduces.
Till the early 90’s very little attention was paid to the “Quality” aspect. But with increase in competition, Quality has become an indispensable element.
So the big Question that arises is how can we stop the penetration of Atmospheric Moisture when we have no control on the humidity and other natural elements?
One possible solution could be to change the top paper to reduce the surface area from which moisture can get absorbed.
Second possible solution could be the use of de-humidifiers.
Both the above alternatives have one thing in common. Both the alternatives are expensive to be incorporated which would eat away the profits, as the customers are never willing to pay more.
Last but not the least; one possibility could be to change the adhesive, since change in paper is an expensive affair. But the question that pops up next is that, Can a change in adhesive help restrict the absorption of atmospheric moisture?
The answer is YES!
Kraft paper which is used in the manufacturing of boards is hygroscopic in nature, i.e. It attracts moisture from the atmosphere. Similarly, Alkaline adhesive with higher pH values is also hygroscopic in nature. This traditional combination of highly alkaline adhesive with kraft paper causes Moisture problems.
The use of Low / Non Alkali Adhesive can solve these moisture Problems. These pre – mix adhesives are readily available in the market. The Boxes made with Low / Non Alkali Adhesive can withstand the harsh conditions in the Deep Freezers without deterioration in Quality.
This change in adhesive is very cost effective because adhesive consumption constitutes not more than 4% of paper consumption.
For more details feel free to write to us on firstname.lastname@example.org or visit us on www.indianadhesive.com.