Pokemon lunch tin box

The 2021 Pokemon lunch tin box is made of tin-plated iron as the raw material, and is made through different processes such as welding or stamping and buckle. It has good airtightness and compression resistance.

Classification of Pokemon lunch tin boxes-Sort by shape

1. Rectangular Pokemon lunch tin box

①Pokemon lunch tin box with handle; the top and bottom are stamped and formed, and the micro-marks on the lid are 3D engraved. Commonly used Pokemon lunch tin box size 252*180*78mm

②Irregular shape Pokemon lunch tin box; the top and (or) bottom diameters are different; the micro-label of the lid is also 3D engraved. The size is modified according to requirements.

2. Square Pokemon lunch tin box; its structure is three-piece, commonly used specifications are: 99*99*29mm; 66*66*14mm, etc., the height can be adjusted according to customer requirements, and the top cover generally uses hinges cover. The body of the square Pokemon lunch tin box structure is generally made of buckles or stretched, and has a good airtightness.

From the structure, it can be divided into: welded tank, buckle tank, stretched tank, two-piece tank, three-piece tank, etc.

2. The structure of the Pokemon lunch tin box

The rectangular Pokemon lunch tin box and the square Pokemon lunch tin box belong to the buckle structure and are produced in accordance with national standards. The principle used is that the materials to be spliced ​​are subjected to a certain amount of overlap by a pair of rotating upper and lower hooks to complete the splicing. This type of structure and size can be adjusted by each customer according to their own products.

3. Introduction to the raw materials of the Pokemon lunch tin box

The raw material used in the Pokemon lunch tin box is tin plated iron, which originated in the Czech Republic and Slovakia. The area has been rich in metal since ancient times, with advanced technology, and knows how to use hydraulic power to engage in machine manufacturing. Tin-plated iron has been produced since the 14th century. Later, a large number of iron containers (cans) were made for the military of various countries, and they are still used today. It is an iron sheet coated with a layer of tin on the surface, which is not easy to rust. According to different requirements, the thickness of the lunch box packaging material, the amount of tin plating, and the mechanical properties have different requirements.

4. The characteristics of the Pokemon lunch tin box

①Impermeability

Light will trigger food deterioration reaction, and the opacity is good for better preservation of food, and will not cause food to produce oxidative odors.

②Good airtightness

The barrier properties of lunchbox containers to air and other volatile gases are very important for food preservation. Comparison of various materials for lunch packaging containers proves that the oxygen transmission rate of the container directly affects the storage of food; tin boxes with low oxygen transmission rate are better stored.

5. Printing process of Pokemon lunch tin box

1. Printing ink

Ink plays a pivotal role in tin box. It can be said that without ink, it is difficult to have tin box printing. Tin box printing is not the final goal, but a beautification method for tin box packaging. The purpose is to make a variety of exquisite food containers. To make the pictures and texts printed on the lunch box bright and eye-catching, the special function of ink is inseparable . Ink is a kind of chemical product made of resin and oil that contains or does not contain pigment. It is coated on the surface of packaging materials or containers and can be dried to form a continuous, uniform and strong thin protective film.

2. Printing principle

(1) The ink is required to have good adhesion and mechanical properties

Since tin-plated iron prints are ultimately made into food containers, they need to be cut, bent and stretched. Therefore, printing inks are required to have good adhesion to tin-plated iron and corresponding mechanical properties. In order to improve the ink adhesion, the tin-plated iron needs to be white painted before printing. White is the base color of all pictures, with high brightness. After adding other high-energy hues, the brightness of each hue can be increased to form a color gradation.

(2) Requirements for white ink

The surface of the Pokemon lunch tin box is silvery white (or yellow) with metallic luster. Before printing color graphics, the surface needs to be painted or printed white. Due to the limitation of ink coverage, monochrome machines often need to print white twice , Its whiteness can reach 75%. Whiteness is an important indicator of the quality of tinplate printing products. The white ink is required to have a good bonding force with the primer, and it will not yellow after repeated high-temperature baking, and will not fade after high-temperature steaming. Prime tinplate can increase the adhesion to the tinplate and has a good adhesion to the white ink. Commonly used primers are epoxy amine-based, with light color, no yellowing, no aging after repeated baking, and good flexibility and impact resistance.

(3) Requirements for color ink

In addition to a certain degree of water resistance, the color ink printed on the Pokemon lunch tin box also needs its own special requirements. Since the surface of tin-plated iron is impermeable to moisture and solvents, it needs to be baked and dried, so the ink should be thermosetting. High requirements for pigments' tinting strength and durability. In addition to the basic properties of general offset printing inks, iron printing inks should also have heat resistance, strong ink film adhesion, impact resistance, good hardness, cooking resistance and light resistance according to the characteristics of iron printing.

6, Pokemon lunch tin box production standards

Main parts: reflect the main body's pattern, text, mark and bar code position, the printing color is clear, and the text is clear.

Slight scratches: no more than 0.3mm*20mm on the printed surface, no traces of iron scratches.

Front: Place the front of the picture and text directly in front of and directly under the sunlight, the outer surface that can be observed.

Side: The surface other than the main viewing surface, such as the back, side, bottom, and inner surface.