The role of container desiccant in shipping process

点击数：5982022-01-04 10:25:21　来源: 干燥剂厂家 广东佛山集装箱氯化钙干燥剂 矿物硅胶货柜防潮剂-佛山市圣力嘉包装材料有限公司

    Container desiccant is used in shipping container commonly as a moistureproof products, especially in the process of ocean shipping, container desiccant because of using in container, so call as container desiccant, and because of the appearance in cartons, also known as dry, dry pole, etc., the current high adsorption container desiccant its main raw material for calcium chloride, is using of the calcium chloride easy deliquescence principle, calcium chloride container desiccant bibulous rate can reach about 200% of its weight, even more than 300%, is the ideal moisture products, container transport goods container desiccant can effectively keep the internal space of the container is dry, Prevent the phenomenon of container rain and container rain caused by the temperature difference in the process of transportation or storage in containers, so as to prevent damage to the packaging of goods.

    1. Principle of dampness in container shipping goods

    Container in Marine transportation and storage process, because the sunshine make container inside air temperature higher in the day, and the goods and packing of the goods in the cabinet with moisture to evaporate into the air in the cabinet, at night, because the temperature drop, the water vapor in air separation, the container in the process of shipping cycle repeatedly experience high humidity weather and is strongly temperature difference, the temperature change will be between 0 ℃ to 60 ℃, container roof can form condensate, which is formed container rain phenomenon.

    2. Characteristics of container desiccant

    In the course of container shipping, the steam vaporized during heating will flow along the box wall along with the updraft to the top of the container. Container desiccant, hanging on the top of the container wall, there are also a combination of horizontal hanging on the top of the container, these hanging on the top of the water vapor will be absorbed until the desiccant saturation; The container desiccant becomes invalid after adsorption and saturation, so the container desiccant needs to be put in sufficient quantity or surplus quantity to ensure the effect.

    3.Selection and application of container desiccant

    Container desiccant how to choose, to choose the container desiccant mainly consider the type and quantity of desiccant adsorption material, generally refer to the following aspects: 1, according to the characteristics of their own goods, such as special easy be affected with damp be affected with damp, water content of large goods, suggestion choice high calcium chloride container desiccant adsorption, dropped or added amount and ensure adequate delivery;2. If the destination port of the goods strictly requires the use of DMF-free desiccant, it is suggested not to use silica gel raw material desiccant as far as possible;3. If the container is standard and general goods, 6-8 pieces of calcium chloride desiccant should be put into the container. If it is a 40 feet container, 12-16 pieces should be put in. 4, if the goods is easy to rust, and choose calcium chloride desiccant will need to choose material excellent SailGuard container desiccant or other anti permeation effect good desiccant, SailGuard company production with gray as raw material to the container desiccant, with no leakage, the characteristics of environmental protection on the downside, supply some larger can ensure moistureproof effect;5. Choose vertical or combination of vertical and horizontal hanging based on the packing method of the goods; 6, in all types of cargo, packaging materials, transportation cycle, transit the weather changes (temperature, humidity, moisture standard, and so on in container desiccant selection process needs to be taken into consideration, usually a standard container (general cargo) need to be in a certain extent, 8-16 kg moisture adsorption, adsorption capacity to achieve 70% calcium chloride, container desiccant, it is recommended to use the force jia 6-8 kg desiccant, container desiccant dosage is double in 40 feet.