A brief talk about cosmetic packaging material technology

As one of the important fulcrum of cosmetics, cosmetics have higher requirements on the visual effect and touch of cosmetics. Compared with other packaging materials, cosmetics have more strict requirements on the process of cosmetic packaging materials from cosmetic packaging manufacturers and suppliers.

The design of makeup packaging material shape process is an important part of a cosmetics before the market, it can not be omitted, the main process of makeup packaging material on the market at present are: electroplating, silk screen printing, bronzing, surface spraying, UV, thermal transfer printing, sandblasting. Then let's follow Yushu Packaging to analyze the mainstream process of cosmetic packaging materials:

I. Electroplating process of cosmetics packaging materials

Electroplating process of cosmetics packaging materials: Electroplating refers to a surface processing method in which the plating base metal is deposited on the surface of the base metal by electrolysis in a salt solution containing the metal to be gold-plated. The properties of the coating are different from that of the base metal and have new characteristics. According to the function of the coating is divided into protective coating, decorative coating and other functional coating.

Electroplating process of cosmetic packaging materials: for cosmetic manufacturers, generally including three stages of pre-plating, electroplating and post-plating treatment. Requirements for electroplating:

1. There should be good adhesion between the coating and the substrate metal, and between the coating and the coating.

2, the coating should crystallize fine, smooth, uniform thickness.

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

4, the coating should have the specified indicators, such as brightness, hardness, electrical conductivity, etc.

Two, cosmetics packaging materials screen printing process

Screen printing of wholesale cosmetics packaging material refers to the use of screen as a plate base, and through the photosensitive plate making method, made with graphics and text screen printing plate. Screen printing consists of five elements, screen plate, scraper, ink, printing table and substrate. The use of screen printing plate graphic part of the mesh can be through the ink, non-graphic part of the mesh can not be through the basic principle of printing ink. Printing in the screen printing plate into one end of the ink, with a scraper on the screen printing plate on the ink part of certain pressure, at the same time toward the other end of the screen printing plate uniform movement, ink in the movement of the scraper from the picture and text part of the mesh extrusion to the substrate.

Three, cosmetics packaging material bronzing process

The bronzing process includes:

Hot stamping preparation - plate - pad - hot stamping process parameters determination - hot stamping - sign sample - official hot stamping.

Bronzing is a special printing process that uses no ink. The so-called bronzing refers to the process of hot stamping the anodized aluminum foil to the substrate surface under a certain temperature and pressure.

Packaging anti - counterfeiting anodized text and text presents a strong metallic luster, bright colors, never fade. In particular, gold and silver anodized with its magnificent, delicate and elegant decoration embellished the surface of the printed matter, enhanced the artistic Tangshan jade seal of the printed matter, played a prominent theme of the publicity effect; Its brightness is much more than printing gold and silver, so that the product has a high-grade feeling and give people with the enjoyment of the United States. At the same time, because of the excellent physical and chemical properties of anodized aluminum, it plays a role in protecting the printed matter, so the bronzing process is widely used in high-grade, exquisite packaging and decoration trademarks, calendars, book covers and other printed matter; Secondly, anodized hot stamping a very wide range of characters, from general book covers, trademark patterns, advertising, plastic cosmetic packaging products to daily necessities, from paper to leather, cotton, etc.;

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

4. Spray the surface of cosmetic packaging materials

The four main elements of paint include:

1. Resin;

2. Pigment.

3. Solvent;

4. Additives.

There are several kinds of dry cosmetics packaging materials and coatings:

1. Volatile drying (evaporation drying with thinner);

2, fusion drying (molecules and molecules due to volatile phase polymerization);

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

4, the use of bridging reaction and dry (the use of bridging agent that is the so-called hardener form bridging and hardening);

5, ultraviolet hardening (unsaturated polyester additive by ultraviolet wavelength 300-400Mn after molecular polymerization and hardening).

V. Introduction to UV process of cosmetics packaging material:

UV coating can be dipped coating, drench coating, paint coating, spin coating, or even vacuum coating and other methods after coating, and then UV photonic irradiation and curing film. Compared with the general solvent-based coating, UV coating characteristics are as follows:

1, curing speed is fast;

2, room temperature curing;

3, save energy;

4, save floor space;

5, do not pollute the environment;

6, improve product performance.

Thermal transfer printing of cosmetics packaging materials

Thermal transfer printing is to print patterns or patterns on heat-resistant adhesive paper, through heating, pressure, printing the pattern of the ink layer on the finished material is a technology. Even for multi-color patterns, as the transfer process is only one process, the customer can shorten the printing of patterns to reduce the loss of materials due to printing errors. The use of thermal transfer film printing can be multi-color patterns into a map, without color, simple equipment can also be printed vivid patterns.

Heat transfer printing equipment is used to decorate aluminum, all kinds of metal plate, can achieve the effect of wood products or marble. The thermal transfer machine works on the principle of thermal sublimation. It can quickly transfer the desired wood or marbling to the surface of the aluminum powder coating in 3-5 minutes and can penetrate to the interior of the coating by 40-60 microns. Aluminum transfer printing production process: one is to use the film machine to heat transfer film volume to cut the required size. Two is to cut the transfer printing film with transfer printing ultrasonic packaging machine according to the size of the workpiece with ultrasonic welding workpiece package bag. The third is in the packaging platform will be inserted with the transfer film made of the workpiece package bag. The fourth is to put the workpiece wrapped with the film on the trolley platform of the thermal transfer printer, and 18 pieces of aluminum can be placed in turn. The two ends of the aluminum are connected with vacuum tap and locked, and the vacuum switch is opened. At this time, the film is tightly attached to the aluminum. The car will automatically send aluminum to the baking furnace, the baking furnace will automatically raise the temperature of 220 degrees and keep the temperature for 3 minutes, and the car will automatically exit the baking furnace. Fifth, loosen the vacuum tap and remove the workpiece. Six is to remove transfer film, and check the quality of the workpiece.

Thermal transfer printing production process of lithographic cosmetics packaging material, one is to use a film cutting machine to cut the thermal transfer paper roll into the required size. The second is to heat transfer paper film attached to the workpiece surface and placed on the plate hot 輚 printer. The third is to push the plate to the heating area of the plate heat transfer printing machine, press the switch of the pressing plate, the pressing plate will press the heat transfer paper tightly on the workpiece, and heat and heat preservation for one minute. Four is to raise the pressure plate, push the workpiece to the piece section, remove the transfer film to the workpiece and check.

Thermal transfer printing technology is widely used in electrical appliances, daily necessities, building materials decoration, etc. Because of its corrosion resistance, impact resistance, aging resistance, wear resistance, fire resistance, outdoor use to maintain 15 years and other properties, almost all goods are made out of this label. For example, when you open the phone case, you can see a lot of labels with barcodes inside. Many labels require that they can withstand the test of time, do not deform for a long time, do not fade, cannot be worn by contact with the solvent, cannot be deformed and discolored because of high temperature, etc., so it is necessary to use a special material printing medium and printing material to ensure these characteristics, general inkjet and laser printing technology is unable to achieve.

7. Sand blasting of cosmetics packaging materials

Sandblasting is very common in the application of the metal surface, the principle is to accelerate the abrasive particles to the metal surface impact, and achieve rust removal, deburring, to oxidation layer or surface pretreatment, it can change the metal surface finish and stress state. Some of the parameters that affect sandblasting technology need to be paid attention to, such as the type of abrasive, abrasive particle size, spray distance, spray Angle and speed, etc. In addition to sand blasting treatment, shot blasting treatment is also a good choice.

Sandblasting process can be divided into air pressure gun and impeller shot blasting two kinds, and the advantage of sandblasting process is that it can remove the peak, remove the burr after die casting, stamping, flame cutting and forging, and the burr effect is better for the thinner workpiece and pore. It can clean up the residual sand in the process of sand casting, clean up the rust of cast iron or steel, clean up the heat treatment, burning, hot forging, rolling and other hot processes in addition to the scale. In addition, for coating applications, it can remove existing coatings or protective layers and provide a glossy surface on overlay casting defects such as cracking or cold lines. In addition to the surface stress, it can provide consistent rough surface, oiling and spraying effect, in the high stress metal parts such as springs and connecting rod by local constant knocking, will produce deformation and show the phenomenon of strengthening. This strengthening effect is the need to use circular abrasive such as stainless steel shot, in the high energy shot blasting machine or special powerful sandblasting machine. If you want to determine the surface strengthening effect of the machine, you can test the workpiece for shot blasting or sandblasting treatment, and then measure whether the amount of deformation meets the requirements.