Metal packaging container
* 来源: Network information * 作者: tinworld * 发表时间: 2019/03/21 16:04:53 * 浏览: 319
Metal packaging container
What is a metal packaging container?
Metal packaging containers refer to thin-walled packaging containers made of sheet metal. They are widely used in food packaging, pharmaceutical packaging, daily necessities packaging, and instruments because of their unique mechanical properties, excellent barrier properties, and easy automation and variety of shapes. Instrument packaging, industrial packaging, arms packaging and other aspects.
Metal packaging container features
Compared with glass packaging containers, plastic packaging containers, and paper packaging containers, metal packaging containers have the following outstanding features.
1. Advantages of metal packaging containers
(1) Excellent barrier properties
The metal packaging container can not only block gases such as air, oxygen, water vapor, carbon dioxide, but also light-shielding, especially blocking ultraviolet light, so it does not cause deliquescence, deterioration, spoilage, and fragrance changes of the contents.
(2) Excellent mechanical properties
Because the metal packaging container is rigid and easy to handle, it can withstand collision, vibration and stacking, and is easy to transport and store, so that the sales radius of the product is greatly increased.
(3) Good thermal conductivity
The use of food metal cans for heating and cooling is highly efficient, which can improve the effect of high temperature sterilization and rapid cooling, and it is possible to achieve in-can cooking of the contents.
(4) Good processing adaptability
Due to the good ductility of the metal, high-precision, high-speed production can be achieved for complex molding processes. For example, the production capacity of the tinplate three-piece can production line can reach 3,600 cans/min. Such high productivity allows metal containers to meet the high demand of consumers at a lower cost.
(5) easy to use
Metal packaging containers are not easily damaged and are easy to carry. Many beverage and food cans are now combined with easy-open lids, which increase the ease of use to adapt to the fast-paced life of modern society and are widely used in travel life.
(6) Beautiful decoration
Metal containers generally have a beautiful metallic luster, and are printed with colorful graphics to add to the aesthetics of the product. Because of this, when people give gifts, they tend to prefer products packed in metal containers.
(7) Health and safety
Due to the use of suitable coatings, metal containers fully meet the hygiene and safety requirements of food containers.
(8) Abandoned and easy to handle
Metal containers are generally recyclable after use and recycled. It not only recycles resources, saves energy, but also eliminates environmental pollution. Even if the metal is rusted and scattered in the soil, it will not adversely affect the environment.
(9) has good shielding
The protective packaging for high-tech electronic equipment can no longer stay on the basic protective functions of moisture, mildew, rust and shock. When electromagnetic waves penetrate sensitive electronic devices in a device, their action is very similar to electrostatic discharge, which can cause electronic components to fail, resulting in the device being unusable. The good shielding properties of metal packaging containers make it resistant to electromagnetic and effective protection of high-tech electronic equipment. This function is of great significance in the military.
(10) with magnetic permeability
Since the steel container has magnetic permeability, it can be transported by magnetic force or the like.
2. Disadvantages of metal packaging containers
(1) Poor chemical stability
It is prone to rust under the action of acid, alkali, salt and humid air. This limits its use to a certain extent. But now, using a variety of high-performance coatings, this shortcoming is made up.
(2) Poor economy
That is, the price is more expensive. This shortcoming is also being gradually improved through technological advancement.
Classification of metal packaging containers
Metal packaging containers are of the following types.
1. Metal box
The metal box has a certain rigidity and a large capacity metal container, which is generally a rectangular parallelepiped, and is mostly used for transport packaging of military products and some special commodities.
2. Metal box
The metal container has a small capacity and a rigid metal container, and has various shapes, such as a square tube box, a cylinder box, a flat box, and the like, and generally has a lid, and is mostly used for food, stationery, and the like.
3. Metal can
Metal containers with a metal tank capacity of generally less than or equal to 16L are available in both sealed and unsealed versions. Mainly used for packaging of food, beverages and pharmaceuticals. There are mainly the following types of metal cans.
(1) three-piece can
It consists of three parts: the can body, the bottom of the can and the can lid. The three-piece can is shaped into two types: a cylindrical can and a non-cylindrical can.
(2) two-piece can
The bottom of the can and the body of the can are drawn and drawn from a single sheet of metal and then joined to the can lid.
(3) roll open the can
The body of the can is pre-notched and has a small piece of tongue for the can key. Rolled metal cans are mostly used for canned meat cans.
(4) open top tank
A metal can that is fully open at one end and can be sealed after canning.
(5) easy to open cans
Sealed can with easy opening. Mainly used to package milk powder, beverages and other products.
4. Metal bucket
Metal containers with large capacity (more than 20L) and thick metal plates (greater than 0.5mm) are mainly used for large and medium-sized transportation packaging such as grease, fuel oil and antifreeze.
(1) The structure of the metal barrel mainly has the following
1 Full-open bucket: A metal bucket with a removable bucket top.
2 Closed bucket: A metal bucket with a non-detachable bucket top. The top of the bucket and the bottom of the bucket are permanently fixed to the bucket by crimping seams or other means. The opening diameter of the top opening of the small opening barrel is ≦70 mm, and the opening diameter of the middle opening barrel is ≥70 mm.
3 neck barrel: the barrel diameter is significantly reduced at the top or bottom to facilitate stacking.
4 bucket: metal bucket with handle.
(2) Material type of metal barrel
1 steel drum. This is a cylindrical packaging container made of low-carbon steel plate with a large volume (30-200L). The thickness of the steel plate is above 0.5mrn. In order to increase the rigidity, there are several ring-shaped ribs protruding outward on the barrel. The steel drum has the characteristics of high mechanical strength, pressure resistance, impact resistance, good sealing performance, large capacity, and can be repeatedly used repeatedly.
According to the different packaging products, steel drums can be divided into: small barrels, commonly known as oil barrels, one small population at the top of the barrel, and a steel spiral cover with a tight gasket to package liquid materials such as gasoline, kerosene and vegetable oil. The middle mouth barrel has a large injection port at the top of the barrel and is equipped with an anti-seepage cover for loading and unloading the contents. It can pack powdery, block and semi-fluid materials. The large mouth barrel has no top cover and is completely covered. Open, the barrel has a flange at the end, and the barrel lid is sealed to the barrel by the barrel hoop. The large mouth bucket is easy to load and remove, and is easy to clean. It is suitable for packaging corrosive powdery, bulk and semi-fluid materials.
2 galvanized buckets and tinned buckets. The galvanized steel sheet is also called white iron. The tin-plated steel sheet is also called tinplate. It is made of zinc or tin as a protective layer on the low-carbon steel sheet, which greatly improves the corrosion resistance of the steel sheet. Tin-plated barrels and galvanized barrels are widely used to package food, pharmaceuticals, soil products, and chemical products.
3 aluminum barrels. There are two kinds of pure aluminum plate barrels and aluminum alloy plate barrels. Aluminum barrels are generally medium and small barrels. Because the rigidity and strength of aluminum barrels are not as good as steel barrels, steel ring ribs and skirts are often used for reinforcement. Aluminum barrels are better than steel drums in anti-rust and anti-corrosion properties, and are often used to package alcohol and various foods.
5. Metal Hose
The metal hose is a cylindrical packaging container made of a flexible metal material. One end of the hose is folded into a pressure seal or a welded seal, and the other end forms a shoulder and a nozzle, and the contents are discharged from the nozzle by squeezing the wall of the tube. The metal hose is mainly composed of a pipe body, a pipe shoulder, a nozzle, a pipe bottom seal and a pipe cover, and is mainly used for toothpaste, cosmetics, pigments, and the like.
6. Foil bag
The foil pouch is a pouch-shaped container made of aluminum foil, which can be used as a packaging lining or as a packaging container. Mainly used for preservation, moisture, mildew and so on.
7. Metal spray can
Metal spray cans are used in disposable airtight metal cans for aerosol products. It is generally composed of a can body, a can lid, a valve and a conduit. Mainly used for the packaging of cosmetics, detergents, pesticides and other commodities.
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