Since March, the Guangdong region has entered the rainy season, which is a big test for the paper industry such as kraft paper. In humid weather, when the relative humidity in the air is too high, the cartons are in direct contact with the air and will absorb the moisture in the air. Excessive water content will directly affect the printing quality and physical properties. So how do we do a good measure of moisture?
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First, keep the storage warehouse dry and control the humidity. Allow conditions to increase the dehumidifier, or open a small fan to increase convection. When necessary, we can put some desiccants and the like, which can be very good to prevent damage to the kraft paper caused by the humid air in the South.
Storage of paper in the warehouse should prohibit the storage of chemicals or products containing high amounts of fats and oils, such as salt, fertilizer, soap, sugar, cement, etc. Kraft paper can not be put together with easily deliquescent items, otherwise it is easy to absorb moisture.
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Second, regular inspection of the bottom card board is damaged, to prevent direct contact with the kraft paper and the ground. The height of the card board should be more than ten centimeters.
The card board uses a single plate instead of a slat. This can greatly reduce the direct contact surface between kraft paper and moist air, so as to achieve the effect of moisture.
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Third, the surrounding film should be surrounded, rather than only one layer to do the formal work. When the film is surrounded with the card board is also synchronized, whether the regulation of the film is strict, whether it can maximize the barrier between water vapor and kraft paper contact plays a crucial role.
After the whole board kraft paper is opened, if it is not used up, it shall be sealed in a timely manner with a surrounding film to reduce the contact time between the kraft paper and the moist air.
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Fourth, the paper is placed, there should be a large gap between the card board to facilitate air circulation. After the day is fine, the windows can be opened to speed up the indoor air circulation and remove moisture from the warehouse.
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The most important thing for moisture protection of kraft paper is rainy days. As long as we complete preventive measures and strictly follow the procedures, we can completely avoid the occurrence of such incidents as damp paper.
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