Screen printing samples-Round bottles, PP bottles, Plastics bottles
The most commonly used printing process for products such as hollow containers is silk screen printing. Generally, a single curved screen printing machine is used, or a combination process of a flame treatment machine, a curved screen printing machine and a curved UV curing machine, or a fully automatic curved screen printing machine is used for printing.
There are many types of hollow containers, which generally refer to blow-molded products of plastic materials with a small mouth and a large body. During the printing process, the issue of air blowing and color registration and positioning must also be considered. When you are negotiating with the machinery manufacturer, you must provide the following information of the hollow container accurately: material, size, whether there is an anchor point, whether there is a handle, purpose, and even provide a design drawing.
Screen printing samples-Round objects, cups
Drinking cups are of the following types:
1) Material: plastic, rubber, metal, ceramic, paper.
2) Shape: cylinder, cone
3) Appearance features: with handle, without handle; with cover, without cover
4) Bottom features: those with or without anchor points.
5) Metal painted cups, metal covered cloth cups.
All the cups can be printed in monochrome with semi-automatic screen printing machine, and can also be printed in monochrome with automatic screen printing machine; cups with handles and positioning points at the bottom can be positioned and overprinted with semi-automatic screen printing machine, or can be printed in full-automatic multi-color Color screen printing machine for multi-color overprinting; a permanent cup, no handle, cups without positioning points at the bottom, can be used for semi-automatic surface servo screen printing machine for color registration, or horizontal turntable screen printing machine for multi-color overprinting.
Screen printing samples-Fabric, Garment, cloths, T shirt
Textiles are the main source of human clothing, mainly including various pure cotton products and chemical fiber materials. In addition to thermal transfer printing, textiles can also use silk screen printing. The silk screen printing process is different from the silk screen printing process of other printing substrates.
Because textiles touch the human body, they are soft, smooth and breathable. The screen printing machine used is generally a rotary screen printing machine, and the workbench is a platform made of aluminum or wood. In order to ensure the flatness of the textile during printing, The workbench will be coated with a layer of platen glue, which is an adhesive that fixes the textile in a specific position. In multi-color printing, the textile will remain on the platform without any movement.
The ink on textiles is also different from the ink on other plastics. It is generally a variety of solvent-based or water-based glue plus toner. Pyroset inks can also be used. Since these inks cannot damage the human body, the environmental protection requirements are higher. Whether it is mucilage or thermosetting ink, its drying needs to be dried to remove moisture. Therefore, the screen printing machine itself should be used together with a swing oven and a tunnel drying oven.
The silk screen printing process has a very rich expressive force, and the texture of its lines and patterns often dwarfs thermal transfer printing and inkjet printing. However, the silk screen printing process is cumbersome and complicated, and the process line is long, which often discourages investors. cannibalize.
Screen printing samples-rulers,Triangular, Protractor
The measuring tools used by students for reading are generally complete sets, including rulers, set squares, and protractors. Some users use pad printing to print them, but the precision is not high, so most of these products are still printed with screen printing machines.
The semi-automatic flat screen printing machine can print a single product, but because the whole set of measuring tools is supplied to the market and sold, most users will require the whole set to be printed at one time. Therefore, the special student measuring tool set screen printing machine has entered the market. Triangle, ruler, and protractor are fixed on the workbench with a complete set of fixtures for one printing. With the addition of automatic feeding device, static electricity removal device, silk screen printing device, robot arm, UV curing device and IR drying device, the automated production line can be completed in one step.
At present, most of the measuring tools used by students are made of PC or PMMA. The screen printing machine is also designed for these two materials. If the material is stainless steel or wood, the machine may need to be upgraded in details.
Screen printing samples-plastic containers, plastics bottles, plastics case
The most suitable printing method for cylindrical products is silk screen printing, because the screen printing machine can easily convert the rotating motion of the cylinder into the plane motion of the screen plate. When the rotation of the cylinder and the movement of the screen plate become precise linear contact, The pattern on the screen will be accurately transferred to the surface of the cylinder. Cylindrical products occupy a dominant position in people's daily life, cosmetic bottles, various liquid containers, cups, some toys, gifts, decorations, handicrafts, lamps, water pipes, fishing gear, etc., in the industrial field, more cylindrical products The list goes on and on, car filters, electronic cigarettes, metal heating tubes, capacitors, fire fighting equipment, liquefied gas tanks, fire extinguishers, etc.
Theoretically, all cylindrical products can be printed with a screen printing machine. Consider the following issues when printing these products:
1) What kind of ink is used, is it UV ink or solvent ink?
2) Use a semi-automatic screen printing machine or a fully automatic screen printing machine?
3) What kind of feeding method should be considered when using a fully automatic screen printing machine?
4) How to realize color printing?
There are many types of cylindrical products, but as far as specific products are concerned, it is necessary to carefully analyze the product's material, size, shape features, and printing requirements to prepare the necessary plan.
Screen printing samples-Ball ben, Signing pen,brush pen.
The pen is the most important stationery in daily life. Its preferred printing process is also silk screen printing, because its shape is firstly a cylinder or roughly a cylinder. Due to the huge amount of use, the semi-automatic surface screen printing machine can only meet the needs of small batches of users. For For large-volume market supply, a fully automatic screen printing machine must be used. Due to the small diameter of the pen holder, there are now specially designed fully automatic screen printing machines for pen holders on the market, which include a feeding trough, a transmission mechanism, a printing system and a drying system.
Pens are made of plastics, metals, wood products, pottery, etc. When considering the printing scheme, prepress treatment and drying methods should also be considered.
The structure of the pen should also be considered. Some pen holders may need direct silk screen printing, and some may need to be printed with a pen holder. Most pens need to be printed in one color, but how to deal with multi-color printing? As you may notice, pen holders are also a market that other printing processes are vying for, hot stamping, heat transfer, pad printing and inkjet printing.
Screen printing samples-heat transfer film, plastics film.PET film
In the fabric and cotton heat transfer process, heat transfer film is a very important consumable. The heat transfer film is the carrier for printing the transfer pattern on the PET or BOPP film. Pressing it on the clothes with a heat press machine will transfer it. Design, the production of thermal transfer film is mainly silk screen printing.
The silk screen printing of thermal transfer film is more complicated. First, choose the base film with peeling function, and then print the pattern on it with a screen printing machine, which can be monochrome or multi-color, and then cover the outline of the pattern with a layer of hot melt. glue. This process is initially aimed at cutting pieces, that is, printing one by one. The printing efficiency is very low. If the screen printing machine is combined with a robot, a drying oven, and even a powder spreader to form a production line, the production efficiency will be greatly improved. improve.
With the development of technology, the production of thermal transfer film has also begun to be rolled into rolls, that is, the entire roll of thermal transfer film is firstly printed, dried, powdered, and then cut.
Whether it is the production of cut thermal transfer film or the production of whole roll thermal transfer film, the process is more complicated, especially multi-color silk screen printing, which is difficult and the machine cost is also high, so inkjet printers are now used for production. The process of thermal transfer film has gradually entered the market and gradually occupied a dominant position.
This is another example of the silk screen market being cannibalized by the inkjet printing market.
Screen printing samples-Roll cloth. ribbon
The most common printing method for webbing is silk screen printing, which has a higher market share than hot stamping and sublimation transfer printing, and it is also the first process used in the indirect hot stamping process.
Since most of the ribbons are narrow strips with different widths, in most cases, multiple strips can be printed on the screen printing machine at a time, and the production efficiency will be doubled. The current webbing screen printing machine has been standardized. It is a flat screen printing machine that uses a synchronous belt for transportation. The back end is connected to an IR tunnel furnace. The webbing belongs to various knitted fabrics, and UV ink is rarely used.
The special webbing screen printing machine can print monochrome to multi-color. Although the price is high, the precision is also high and the printing quality is good. Some users will add a feeding device and a winding device to print the webbing on the basis of the ordinary screen printing machine. The effect is Not bad.
Screen printing samples-balloon
The silk screen printing of balloons is quite special. It must first be blown into a certain size approximate sphere, and then screen printed on a special screen printing machine. The silk screen printing can be monochrome or multi-color.
Balloon screen printing is not a high-precision printing process. It is subject to the change of blown size, the elasticity of balloon printing, shaking, and the change of position when the screen and balloon are in contact.
The screen printing machines used in balloon printing are mainly monochrome balloon screen printing machines, turntable balloon screen printing machines, and in-line multi-color screen printing machines. Although these screen printing machines are powerful, they can only be used on certain parts of the balloon. print.