Screen printing and electroplating process of cosmetic glass bottle packaging
When the glass bottle packaging products are formed, after surface treatment, it is necessary to carry out graphic printing, so as to convey the enterprise product information and brand information on the glass bottle through graphic printing. Common graphic printing is divided into a variety of, here we mainly introduce several cosmetic glass bottle packaging materials industry common processes, such as screen printing, pad printing, heat transfer, hot stamping, water transfer and other processes.(Click to learn more)
1, direct plate making method
Methods: Plate method is directly on the plate first will be coated with light-sensitive materials wrist sheet base photosensitive film face flat on the work surface, will stretch good wrist net frame on a flat on the base, and then in net box in the photosensitive slurry and soft squeegee pressure coating peel off after dry fully plastic base, attached to the wrist of photosensitive film screen can be used for plate burning, after enhancement, dry will make printing screen. This completes the packaging of the glass bottle
Process: has been stretched net degreasing drying strip film base exposure development drying repair screen sealing.
2, indirect plate making method
Method: indirect plate making way is indirect exposure film in the first place, with 1.2% H2O2 sclerosis with warm water after enhancement, drying is made after stripping graphics plate, plate when the graphic film film with good screen tiejin, tense by squeeze film and moist screen paste, jie the lower base, made screen printing screen the wind blow dry it.This completes the packaging of the glass bottle
1) has been stretched net degreasing drying
2) Indirect film exposure hardening development fit blow-dry repair screen
3, straight mixed plate making method
The first photosensitive adhesive layer of water, alcohol or photosensitive adhesive paste on the wire mesh frame, after hot air drying, remove the photographic film base, and then print, development processing is made of screen version.
Electroplating is short for electrolysis gold plating method. Electroplating is the plating parts (products), immersed in the liquid medicine containing metal ions to be plated and connected to the cathode, the other end of the liquid medicine placed the appropriate anode, (soluble or insoluble), through the direct current, the surface of the plated parts is precipitated a layer of metal film method. The simple understanding is the change or combination of physics and chemistry. At present, the most common electroplating methods: aqueous electroplating (roll plating, hanging plating, continuous plating), chemical plating.
Process cost: mold cost (none), single piece cost (high)
Suitable output: single to large quantities can be
Quality: High gloss, anti - oxidation corrosion
Speed: Medium speed, depending on material type and coating thickness
1. Electroplating equipment
The BIGGEST FUNCTIONAL ADVANTAGE OF ELECTROPLATING IS THAT a new AND highly polished METAL layer can be formed on the surface of both metal and non-metal parts, directly enhancing the visual grade of the original parts. Compared with the direct metal molding parts, the cost is much lower. Special waxes and coatings can be used to electroplate specific areas on the surface of the same parts. Chromium plating is widely used in the surface treatment of transportation vehicles and furniture industries
2. Main materials
Lawrencium, Lawrencium, Lawrencium, Lawrencium, lawrencium, cirencium, Cirencium, cadmium, copper, nickel, chromium, silver, tin, gold, iron, cobalt, lead, antimony, platinum, titanium, lawrencium and more. In addition to the single metal coating, there are many alloy coating, such as copper tin, copper zinc, copper nickel, nickel iron, lead tin, zinc tin, zinc iron, zinc nickel, copper cadmium, zinc cadmium, tin iron, tin cobalt, tungsten iron and so on.
Plastics, ABS is the most commonly used, because ABS can withstand 60°C (140°F) plating high temperature, and its electroplating and non-electroplating binding strength is high, most metals can be electroplated, but different metals have different levels of purity and plating efficiency. Some of the most common are: tin, chromium, nickel, silver, gold and rhodium (rhodium: a type of white gold, which is extremely expensive and remains bright for a long time, resisting most chemicals and acids. Most commonly used for products with high gloss requirements, such as trophies and MEDALS). Nickel should not be used to electroplate products that come in contact with skin, as nickel can be irritating and toxic to skin
3, coating instructions
According to the coating, it can be divided into chromium plating, copper plating, cadmium plating, tin plating, galvanized and so on.
During electroplating, the coating metal or other insoluble material as the anode, the workpiece to be plated as the cathode, the cation of the coating metal on the surface of the workpiece to be plated is reduced to form a coating. In order to eliminate the interference of other cations, and make the coating uniform, firm, need to use the solution containing the coating metal cation electroplating solution, in order to keep the concentration of the coating metal cation unchanged. The purpose of electroplating is to plating metal coating on the substrate and change the surface properties of the substrate.
We take the common ABS plastic electroplating as an example. ABS electroplating is to corrode the B(butadiene) in ABS in a chemical way to make the surface of the product show some loose fine holes, then attach a layer of conductor (such as copper) to make it conductive, and then electroplating according to the way of metal electroplating. Therefore, ABS electroplating is a mixture of electroless plating and electroplating.
Pre-treatment (grinding preparation washing water washing electrolytic degreasing water washing acid dipping and activated water washing) and washing water electroplating (base) washing and washing water electroplating (surface) washing pure water dehydration drying
In the cosmetic glass bottle packaging material industry, because the coating after electroplating cannot directly contact with the contents, the plating process is mainly applied to external components, such as various packaging material shell lipstick shell, bottle cap shell, makeup tool components, etc.