Waterproof moisture-absorbing packaging paperboard

Abstract

The invention belongs to the field of packaging paperboard preparation, specifically to a waterproof moisture-absorbing packaging paperboard. The packaging paperboard comprises an outer paperboard, corrugated paper and an inner paperboard which are sequentially arranged from outside to inside. The outer paperboard is soaked in a paraffin solution, and the outer side of the outer paperboard is coated with a water repellent agent. The inner paperboard is prepared from, by mass, 60-90 parts of straw powder, 5-6 parts of straw carbon and 5.5-8.5 parts of a reinforcing agent. According to the waterproof and moisture-absorbing packaging paperboard and a preparation method thereof, outer layer waterproofing and internal adsorption are combined, so waterproof and moisture-absorbing performances are improved; and the straw which is easy to obtain and low in price is adopted as a raw material, so the straw which is waste is recycled, and production cost is reduced.

Description

technical field [0001] The invention belongs to the field of packaging cardboard preparation, in particular to a waterproof and moisture-absorbing packaging cardboard. Background technique [0002] Corrugated cartons made of packaging cardboard are generally used for packaging and transportation of products. During transportation, if encountering rainy and snowy weather, the cartons are easily soaked, thereby causing damage to the internal products. In the prior art, this type of packaging cardboard The waterproofing treatment is generally just impregnated with waterproofing agent during the pulp production process, the waterproofing effect is limited, and once the sewage enters the inside of the carton, the original waterproofing agent added to the cardboard will become an obstacle to the outflow and evaporation of the internal sewage, and the water on the outer layer of the carton will be evaporated After that, the internal water is still difficult to volatilize, and the p...

AI Technical Summary

Problems solved by technology

[0002] Corrugated cartons made of packaging cardboard are generally used for packaging and transportation of products. During transportation, if encountering rainy and snowy weather, the cartons are easily soaked, thereby causing damage to the internal products. In the prior art, this type of packaging cardboard The waterproofing treatment is generally just impregnated with waterproofing agent during the pulp production process, the waterproofing effect is limited, and once the sewage enters the inside of the carton, the original waterproofing agent added to the cardboard will become an obstacle to the outflow and evaporation of the internal sewage, and the water on the outer layer of the carton will be evaporated After that, the internal water is still difficult to volatilize, and the product will continue to be soaked inside the carton, causing continuous damage to the contained product

The patent with the application number 201910759539.8 designed a kind of corrugated paper that fills the cloth bag with adsorption and dehumidification material into the U-shaped space formed by the inner corrugated paper, which can remove the water vapor inside the carton, but it needs to be inserted one by one in alignment with the corrugated folds. The operation is too complicated and the cost of mass production is too high