Iron box

Iron box The so-called iron box, as its name implies, is a box made out of iron, that is, a box made of tinplate. Tinplate is actually tin on the surface of iron to protect it. The iron boxes are divided according to different types of different industries, and are more common: moon cake tin, tea tin, coffee tin, biscuit iron, health products tin, beauty tin, hand-pulled tin, savings tin, Sealed tin boxes, milk powder bins, wine tins, Christmas tins, gift tins, tin cans, metal drums, badges, music tins, cigarette tins, stationery tins, CD tins etc.
The characteristics of the iron box First, opacity It is well-known that light will cause changes in protein and amino acids in addition to the bad reaction of food. However, vitamin C in food products is more easily exposed to light and other food ingredients, resulting in substantial loss of nutrients. According to relevant research and analysis, the loss of transparent glass bottled milk and vitamin C is 14 times higher than that of dark-colored bottled milk. The light also causes oxidation odor of milk, as well as the cracking of nutrients such as methionine, etc., and loss of nutritional value. The opaque tinplate can make vitamin C the highest preservation rate.
Second, a good seal The packaging container for the air and other volatile gases barrier to the preservation of nutrients and sensory quality is very important. From the comparison of various fruit juice packaging containers, it can be shown that the oxygen permeability of the container directly affects the browning of juice and the preservation of vitamin C; the metal iron boxes, glass bottles and aluminum foil laminates, and carton pairs with low oxygen transmission rate Vitamin C is better preserved, with iron cans being the best.
Third, the reduction effect of tin Tin tin on the inner wall of the tin and remaining in the container when filling the oxygen can reduce the role, it can reduce the chance of oxidation of food ingredients. The reduction effect of tin has a good preservation effect on the flavor and color of light-colored fruits and juices. Therefore, the use of uncoated iron ferrous iron packs is more nutritious than those of other packed iron boxes. Better, slight browning, better acceptance of flavor quality, and longer shelf life.
Fourth, the human body to help the tin box of food, except for a small number of light colored fruit and fruit juice canned, most of the use of internal coating of empty cans, in order to improve the corrosion resistance of the container; but due to the electrochemical effect of the metal, not painted Canned tinned foods have a small amount of iron dissolved during storage and are found in sealed canned foods in the form of divalent iron and are easily absorbed by the body, at levels of approximately 1 to 10 ppm. For fruit and vegetable products, the amount of iron in the raw material itself is not large. The iron box product is calculated as ppm iron per can with a 350 ml drink can and provides 1.75 mg of iron per can, which is approximately 18 mg of daily human intake. One tenth. If the fruit and vegetable juice beverage can contains rich vitamin C, then iron is more easily absorbed, so iron canned food and beverage can be a good source of iron. The significance of nutrition for canned food is more profound.
Because of these properties, tin cans provide a closed system that is completely insulated from environmental factors except for heat. The foods that are color-rejected are deteriorated by light, oxygen, and moisture, and are not lightened by the aroma or are smelled by the environment. Over-contamination and odor, food storage stability is better than other packaging materials, vitamin C has the highest preservation rate, and nutrient storage is also the best.
Iron box products are mainly applied to:
1, food categories: moon cakes, biscuits, candy, chocolate, tea, wine and leisure foods, etc. 2. Health care categories: propolis, calcium tablets, donkey-hide gelatin, lozenges, etc. 3, entertainment: chips, CDs, etc. 4. Stationery : Pencils, crayons and other stationery 5, Agricultural materials: Seeds, micro fertilizers, etc. 6, Tools: Various home hardware tools Sina Weibo: China's iron box manufacturers 7, Gift categories: Various promotional gift boxes, cans , Card Boxes, Business Battery Boxes, etc. 8, Others: Packaging for various small-sized solid goods