Talking about cosmetic container packaging Process

As one of the pillar industries of fast-moving consumer goods, consumers have increasingly strong cognition and awareness of them. Consumers no longer blindly follow the trend, and have higher requirements on the visual effects and touch of cosmetics; The craftsmanship of the material also has more stringent requirements.

The shape process of designing the packaging material is an important part before the launch of a cosmetic, and it cannot be omitted. The main cosmetic container packaging process includes: electroplating, silk screen, bronzing, surface spraying, UV, thermal transfer, sandblasting

1. Plating process

Electroplating process: Electroplating refers to a kind of plating that uses the base metal to be plated as the cathode in the salt solution containing the metal to be plated, and through electrolysis, the cations of the metal to be plated in the plating solution are deposited on the surface of the base metal to form a plating layer. Surface processing methods. The coating performance is different from the base metal and has new characteristics. According to the function of the coating, it is divided into protective coating, decorative coating and other functional coatings.

Electroplating process: generally includes three stages of pretreatment before electroplating, electroplating and post-plating treatment. Requirements for electroplating layer:

1. There should be a good bonding force between the plating layer and the base metal, and between the plating layer and the plating layer.

2. The coating should be finely crystalline, smooth and uniform in thickness.

3. The coating should have a specified thickness and as few pores as possible.

4. The coating should have all the specified indexes, such as brightness, hardness, conductivity, etc.



2. cosmetic container of Silk Screen Printing

Screen printing refers to the use of silk screen as a plate base, and through a photosensitive plate making method, made into a screen printing plate with pictures and texts. Screen printing consists of five major elements, screen printing plate, squeegee, ink, printing table and substrate. Use the basic principle that the mesh of the graphic part of the screen printing plate can penetrate the ink, and the mesh of the non-graphic part cannot penetrate the ink for printing. When printing, pour ink on one end of the screen printing plate, use a squeegee to apply a certain pressure to the ink position on the screen printing plate, and at the same time move toward the other end of the screen printing plate at a uniform speed, the ink is moved by the squeegee from the image and text Part of the mesh is squeezed onto the substrate.


3. Hot Stamping on cosmetic container

The hot stamping process includes:

Hot stamping preparation→plate loading→pad plate→determination of hot stamping process parameters→trial hot stamping→sign sample→formal hot stamping.

Hot stamping is a special printing process that does not use ink. The so-called hot stamping refers to the process of hot stamping the electrochemical aluminum foil onto the surface of the substrate under a certain temperature and pressure.

Packaging anti-counterfeiting anodized aluminum hot stamping graphics show a strong metallic luster, bright and eye-catching, and never fade. In particular, the gold and silver electrochemical aluminum, with its magnificent, exquisite and elegant decoration, embellishes the surface of the printed matter, enhances the artistic Tangshan jade seal of the printed matter, and plays a promotional effect that highlights the theme; its brightness greatly exceeds that of printed gold and printed silver. , So that the product has a high-end feeling and gives people a beautiful enjoyment. At the same time, due to the excellent physical and chemical properties of anodized aluminum, it plays a role in protecting printed products, so the hot stamping process is widely used in high-end and exquisite packaging and decoration trademarks, wall calendars, book covers and other printed materials; secondly, anodized aluminum hot stamping A very wide range of characters, from general book covers, trademark patterns, publicity advertisements, plastic products to daily necessities, from paper to leather, cotton, etc.;

Hot stamping is a dry processing method, and the workpiece can be packaged and transported immediately after hot stamping. Therefore, hot stamping technology is currently widely used in pre-press technology, and the scope of application of hot stamping is still expanding.


Four, surface spraying (plastic parts) Spary

The four major elements that make up paint include:

1. Resin (Resin);

2. Pigment;

3. Solvent;

4. Other additives (Additive).

The types of paint drying are as follows:

1. Volatile drying (using thinner to evaporate and dry);

2. Fusion and drying (molecules and molecules are resistant to phase polymerization due to volatilization);

3. Oxidative drying (unsaturated fatty acids combine with oxygen in the air);

4. Use bridging reaction to dry (use bridging agent, so-called hardener to form bridge and harden);

5. Ultraviolet curing (unsaturated polyester is irradiated with an ultraviolet wavelength of 300-400mn after the unsaturated polyester is added, and the molecules polymerize and harden).


Five, UV process introduction:

UV coatings can be coated by dipping, curtain coating, lacquer coating, spin coating, or even vacuum coating, and then cured by ultraviolet photon irradiation to form a film. Compared with general solvent-based coatings, the characteristics of UV coatings are as follows:

1. Fast curing speed;

2. Curing at room temperature;

3. Save energy;

4. Save floor space;

5. No pollution to the environment;

6. Improve product performance.


6. Heat transfer(print) on cosmetic container

Thermal transfer is a technique in which patterns or patterns are printed on heat-resistant adhesive paper, and the patterns and patterns of the ink layer are printed on finished materials by heating and pressing. Even for multi-color patterns, since the transfer operation is only a process, customers can shorten the pattern printing operation and reduce the loss of materials (finished products) caused by printing errors. Using thermal transfer film printing, multi-color patterns can be formed at one time, without color registration, and simple equipment can also print realistic patterns.

Thermal transfer equipment is used to decorate aluminum profiles and various metal plates, which can achieve the effect of wood products or marble. The heat transfer equipment works according to the principle of sublimation. It can quickly transfer the required wood grain or marble grain to the surface of the aluminum powder coating within 3-5 minutes and can penetrate into the interior of the coating 40-60 Micrometers. Aluminum transfer production process: First, use a film machine to cut the heat transfer film to the required size. The second is to use a transfer ultrasonic packaging machine to weld the cut transfer film into a workpiece packaging bag according to the size of the workpiece by ultrasonic welding. The third is to insert the work piece package bag made of transfer film on the packaging platform. Fourth, place the work piece wrapped with the transfer film on the platform of the thermal transfer machine trolley, and place 18 aluminum materials in turn, connect the vacuum taps to both ends of the aluminum materials and lock them, turn on the vacuum switch, and the transfer film is tight. Close to the aluminum material. The trolley automatically sends the aluminum material into the baking furnace, the baking furnace automatically heats up to 220 degrees and keeps the temperature for 3 minutes, and the trolley automatically exits the baking furnace. The fifth is to loosen the vacuum tap and remove the workpiece. Sixth, remove the transfer film and check the quality of the workpiece.

The lithographic heat transfer production process, one is to use a film cutting machine to cut the heat transfer paper roll into the required size. The second is to attach the thermal transfer paper film to the surface of the workpiece and place it on the flat thermal printer. The third is to push the plate to the heating zone of the plate heat transfer machine, press the pressure plate switch, and the pressure plate will tightly press the heat transfer paper on the workpiece, heat and keep it warm for one minute. The fourth is to raise the platen, push the work piece to the piece section, remove the transfer film, remove the work piece and inspect it.

Thermal transfer technology is widely used in electrical appliances, daily necessities, building materials and decoration. Because of its corrosion resistance, impact resistance, aging resistance, abrasion resistance, fire resistance, and 15 years of non-discoloration when used outdoors, almost all products use labels made in this way. For example, when you open the phone case, you can see densely packed labels with barcodes inside. Many labels require that they can withstand the test of time, are not deformed or faded for a long time, cannot be worn due to contact with solvents, and cannot be deformed or discolored due to high temperature. Therefore, it is necessary to use a special material printing medium and printing material to ensure these characteristics. Inkjet and laser printing technologies are unattainable.


Seven, sandblasting for cosmetic container

The application of sandblasting on metal surfaces is very common. The principle is to impact accelerated abrasive particles on the metal surface to achieve rust removal, deburring, deoxidation or surface pretreatment, etc. It can change the finish of the metal surface And stress state. And some parameters that affect the sandblasting technology need to be paid attention to, such as the type of abrasive, the particle size of the abrasive, the spray distance, the spray angle, and the speed. In addition to sandblasting, shot blasting is also a good choice.

The sandblasting process can be divided into two types: air pressure spray gun and impeller shot blasting. The advantage of the sandblasting process is that it can remove peaks, remove burrs after die-casting, stamping, flame cutting and forging. It is suitable for thinner workpieces and pores. The burr effect is better. It can clean the residual sand particles in the sand casting process, clean the rust stains of cast iron or steel, clean the descaling after heat treatment, burning, hot forging, rolling and other thermal processes. In addition, in coating applications, it can remove the existing paint or protective layer, covering defects such as cracks or cold lines on the castings, and provide a glossy surface. Coupled with the surface stress, it can provide a consistent roughened surface, oiling and spraying effect. When high-stress metal parts such as springs and connecting rods are repeatedly beaten locally, they will deform and show strengthening. This strengthening effect requires the use of circular abrasives such as stainless steel shots, which are used in high-energy shot blasting machines or special powerful sandblasting machines. If you want to measure the surface strengthening effect of the machine, the test workpiece can be shot blasted or sandblasted, and then measure whether the deformation meets the requirements.