This information is provided by Jinan Languang Electromechanical Technology.
Tinplate canned food is often used in food packaging, in order to prevent the gradual accumulation of toxic and harmful substances migrated by packaging materials in the storage process and affect human health, it is necessary to ensure that its health indicators meet the requirements. Generally speaking, the inner coating of tinplate cans is not harmful to our human body, and it is non-toxic and tasteless, very safe and environmentally friendly. However, these coatings decompose at high temperatures, producing a chemical known as "evaporation residue". It can cause harm to our body, especially to the kidneys, which is very damaging. In order to protect our health, we need to test the hygienic performance of packaging with the help of professional testing equipment.
The tinplate can inner layer paint evaporation residue constant weight meter is a special instrument for detecting the evaporation residue of the tinplate can inner layer coating, the test instrument is suitable for polyethylene, polystyrene, polypropylene, perchloroethylene resin as raw materials made of various tableware, containers and food packaging films, cans or other food tools, pipes and other products in different soaking liquid dissolution determination. Through the determination of evaporation residues, the analysis of leaching indicators is carried out to meet the different needs of product applications.
Evaporation residue is an indicator to detect the amount of chemicals that may be precipitated when the packaging is in contact with water, acidic substances, alcohol, oils and fats and other foods during use, and the simulants are generally distilled water, 4% acetic acid, 20% or 65% ethanol and n-hexane. At present, there are regulations at home and abroad on the testing requirements and standards for packaging migrating to food. For example, China's GB 9685-2008 "Hygienic Standard for the Use of Additives for Food Containers and Packaging Materials", GB 4805-1994 "Hygienic Standard for Epoxy Phenolic Coatings on the Inner Wall of Food Canned Food", GB T 500969-2008 "Analytical Methods for Hygienic Standards for Epoxy Phenolic Coatings on the Inner Wall of Food Cans", CFR21 Part 170-189 in the United States, Food Sanitation Law in Japan, etc.
1. The working principle of the instrument: the evaporation residue constant weight meter is based on the principle of constant weight, which evaporates the solvent of the sample soaked in the simulated liquid, and then weighs the evaporated residue to determine the weight and content of the residue.
2. Main features: The instrument has the characteristics of high precision, high efficiency and automation, which can quickly and accurately measure the amount of evaporation residue of the inner layer of tinplate cans.
3. Operation steps: put the test sample into the test chamber of the instrument, heat the solvent to evaporate, and then weigh the evaporated residue, record the data and calculate the content of the evaporated residue.
In short, the evaporation residue constant weight meter of the inner layer of tinplate cans is an important testing instrument, which is of great significance for ensuring food safety and product quality. By using this instrument, the amount of evaporation residue in the inner layer of tinplate can can be effectively detected and controlled, and the quality and safety of the product can be improved.