As a widely used packaging material, the improvement of honeycomb paperboard's moisture-proof performance is crucial to protecting the products inside. The following are some methods to improve the moisture-proof performance of honeycomb paperboard and their applicable scenarios.
First, surface coating with moisture-proof agent is a common and effective method. By evenly coating a layer of moisture-proof agent, such as paraffin emulsion, acrylic resin, etc., on the surface of honeycomb paperboard, a hydrophobic film can be formed on the surface of the paperboard to prevent moisture from invading. This method is suitable for general product packaging that does not require particularly high moisture-proofness, such as packaging of some daily necessities, textiles, etc. In an environment where the relative humidity does not exceed 70%, honeycomb paperboard coated with moisture-proof agent can effectively keep the interior dry and prevent products from being damaged by moisture.
Secondly, use a composite structure to enhance moisture-proofness. Composite honeycomb paperboard with materials with good moisture-proofness, such as plastic film, aluminum foil, etc. Plastic film has good water vapor barrier properties, while aluminum foil can provide better moisture-proof, heat-insulating and light-shielding effects. This composite honeycomb paperboard is suitable for packaging electronic products and food that require high moisture resistance. For example, in the packaging of electronic components, honeycomb paperboards with composite aluminum foil can prevent problems such as short circuits caused by water vapor erosion; in food packaging, it can maintain the freshness and taste of food and extend the shelf life.
In addition, the honeycomb paperboards are impregnated. The paperboard is impregnated in a special moisture-proof solution so that the paperboard fibers can fully absorb the moisture-proof components and enhance their own moisture-proof ability. The impregnated honeycomb paperboards can be used for packaging some outdoor products or products that need to be stored in a humid environment for a short period of time, such as gardening tools, building material samples, etc. It can resist the influence of rain or high humidity environment for a certain period of time and protect the product from moisture.
In addition, optimizing the production process of honeycomb paperboards can also help improve moisture resistance. For example, adding moisture-proof additives during the glue making process can improve the water resistance of the glue, thereby enhancing the overall moisture resistance of the paperboard. This method is suitable for the packaging of cost-sensitive products in large-scale production. It can improve the moisture-proof effect to a certain extent without significantly increasing the cost, such as the packaging of some simple furniture.
For some special products that need to be stored in high humidity or underwater environments for a long time, a combination of sealed packaging and honeycomb paperboards can be used. First, the product is vacuum-sealed and then placed in the honeycomb paperboards packaging, using the buffering properties and certain moisture-proof properties of honeycomb paperboards as the outer layer of protection.
During transportation, especially by sea or in humid areas, a layer of waterproof packaging film can be added to the outside of the honeycomb paperboards packaging to further enhance the moisture-proof effect and ensure the safety of the product during long-distance transportation.
According to different product requirements and usage scenarios, choosing the appropriate method to improve the moisture-proof performance of honeycomb paperboards can give full play to the advantages of honeycomb paperboards and provide reliable moisture-proof protection for products.
