Technical requirements for encapsulating deoxidizer packaging

The deoxidizer used for food deoxidization packaging should pay attention to the following issues: First, it must be safe and non-toxic. If the deoxidizer is enclosed in the food packaging container, it may come into contact with the food, and may even be eaten by mistake. Therefore, the deoxidizer must be safe and non-toxic. Secondly, the deoxidizer should not react chemically with the packaged material, let alone produce peculiar smell or even produce harmful substances. Therefore, when using a deoxidizer, it is necessary to understand the properties of the deoxidizer and the characteristics of the packaged material. Finally, the appropriate deoxidizer is selected according to different deoxidation requirements. For product packaging that requires rapid deoxidization, quick-acting deoxidizers should be selected. Conversely, a slower (slow-acting) deoxidizer can be used. When used in products with strict restrictions on oxygen content, a deoxidizer with high deoxidation effect should be selected. Deoxidizers are available in the form of powder, granules, flakes, etc. When used, a certain form can be directly applied, or a certain method can be used to attach it to a certain carrier such as a high-foaming foam sheet before use. The method of use is usually It is firstly packed in small bags made of materials with good air permeability according to a certain amount (note that warning signs or instructions should be printed on the bags), and then sealed into the package together with the packaged items. This is the same method that is now commonly used to put desiccants in foods with low moisture content. A more advanced method is to combine the deoxidizer with the packaging material and use it in the interlayer of the composite material. The selection of the amount of deoxidizer used should not only ensure that the original oxygen in the packaging container is removed, but also consider the amount of oxygen that penetrates into the packaging, leaving a certain safety factor. When designing, generally increase the amount of use by 15% to 20%. The deoxidation degree in the package can be checked by using an oxygen prompting agent. According to the display color of the oxygen indicator, the amount of oxygen in the package can be directly judged. The oxygen indicator that can be used internationally is a sheet with a diameter of 5~8mm and a thickness of 2~3mm, which can indicate the oxygen content in the packaging container through its own color change. When the oxygen content in the package exceeds 0.5%, the oxygen indicator will appear blue; if the oxygen content is less than 0.1%, it will appear pink; if the oxygen content is 0.5%~0.1%, it will appear snow blue. The deoxidation effect of the deoxidizer is closely related to the deoxidation ambient temperature. The deoxidizer is usually used in a temperature range of 5~40°C. As the temperature increases, the activity of the deoxidizer increases and the deoxidization speed increases; when the temperature decreases, the activity decreases and the deoxidation speed decreases. The deoxidizer must be well packaged before being subcontracted for use, and it cannot be directly contacted with the atmosphere. At the same time, it is required to operate quickly during the packaging process, so as not to absorb oxygen and affect the use effect. Zhongshan Kenwei has developed a high-speed automatic filling packaging for the packaging problems of the deoxidizer industry. The packaging speed can reach 200-800 P/MIN, the performance is stable, and the situation of slight powder inclusion in the three-side horizontal sealing position is completely solved. The first equipment factory in China to manufacture this type of machine has been well received in the packaging industry. .