Technical and screen printing bag
Broadly speaking, the printing is divided into 4 sections: Flat Print, Print In, High Print and Print Filter. Screen printing, including screen printing part, because the use of the printing press “Screen” / “Screen Printing”.
Working screen printing is not difficult nor costly, quite simply provide equipment such as:
1. Screen (gasa fabrics made of Polyester / Nylon).
2. Rakel (tool broom made of synthetic rubber).
3. Drug afdruk (viscous liquid / emilsion).
4. Mika (afdruk drug polishing tool).
5. Sun / Box Lamp (irradiation time of print).
6. Foam (for mengepress movies on screen).
7. Water Spray (developer image afdruk).
8. Table Sablon.
9. Ink / Paint (special printing).
There are three aspects of screen printing techniques: first, make a film screen printing technique, second, screen print technique, third, all the basic screen printing technique. By understanding the basic three, then you can start printing a print job that can generate extra income or make a permanent job.
Good screen printing results is determined by the type of screen used. for example: To menyablon shirt / cloth suitable then the screen is a screen that is porous rough with type screen T48, T54, T61, T77 and T90. For menyablon paper, plastic, stickers, PVC, etc., screen suitable is the type of medium and fine screen with a screen type T120, T150, T165, S180 and S200. As for printing images “full color” raster smooth and sparasi using type screen S180 and S200.
Techniques to make the film.
The movie screen is an image / posts made by manual or on the computer’s settings. The film is a “master” to be used in screen printing purposes. Without this film screen printing processing can not be done.
There are two terms in the filming of screen printing, namely: First base material to be colored translucent or transparent, two, drawing or writing should be solid black.
There are 4 types of movie screen:
Repro Film: This film is widely used by professionals because its quality is very good screen printing to produce afdrukan perfect. This film making machine uses repro results more transparent and more black.
Tracing movie: Filming is quite practical, with the reprinting of a computer with tracing paper or Copied with tracing paper.
Oil Film: The film is quite popular because of low cost and practical. simply melumuru paper with cooking oil and then dried.
Film Paper Cut: Usually these films are used to make screen prints banners because the print media is large enough, the film material made of paper cutting.
The manufacturing process is quite simple: paper sudag made writing / drawing straight cut with a cutter knife sehinggan each letter / picture perforated. To create a colored screen prints, make as many films follow the pattern of the desired color image. Screen print technique.
Pengafdrukan process is a very important process and determine the result of a printing job. When the results afdrukannya better then most likely will be a good result sablonannya.
What it afdruk Screen? ………… ..
Afdruk is a copying process of drawing / writing the film into the screen. any image / writings on the film will look the same on the screen after going through the process pengafdrukan.
There are two ways print screen:
1. With the Sun
2. With a neon light box
How it works both ways are same ie mengexpose (illuminating) which has dipolesi with drug afdruk “emulsion” to evoke images / writing to the screen through lighting.
There are two kinds of emulsion used to print the screen, the first type of solvent for these types of non fabrics and types of Water Base for silk fabric / shirt.
There are 9 steps print screen:
Mixing Emulsion (drug afdruk) and SR / yellow liquid contained in the packaging Emulsion. Drugs that are mixed with yellow liquid can not be stored longer, so use in moderation. Emulsion pour the liquid into the container and then enter the yellow / SR1: 9, stirring until completely fused.
Polishing the screen evenly with Emulsion which has been mixed with SR. Make sure the screen is clean, dry and free of dust. apply the screen by using Mika, do polishing with a flat on the outside and the inside screen, not to be thickness or thinness of the polishing Emulsion on the screen.
Mengeringakan diruangan closed or dark screen. Drying may be by Hair Dryer, fan. Warning !!! This process is only done in a closed dark room, when exposed to bright light will cause the failure of pengafdrukan.
If it is dry (still in a closed room), place the film on the screen in reverse. Layer with clear glass, under the screen given foam (according to the size of screen) and press and drying in the open air (sun tersinar) for 5-20 seconds depending on the heat of the sun, remember not too long because it will result in failure afdruk.
Pengafdrukan process by using a fluorescent light box is the same as above. Irradiation with light can and should be really bright. Use fluorescent lamps / TL 3-4 stems at least 20 watts / rod. dilakuakan irradiating light boxes are coated on the glass thickness of 5 millimeters, duration of irradiation ranging from 5-8 minutes.
Next is the development of an image of the results of irradiation. The way the screen that has been illuminated sun or a lamp be watered with clean water dala and outer screen, is needed to enhance water spray that image / writing is more clearly visible. In the initial spraying should not be too hard.
After washing the screen is considered finished, the screen must be dried diterik sun until completely dry.
If there are defects in the process pengafdrukan slightly (do not interfere with the image or text, the next process is filling the rest of the Emulsion and dried again.
The next process is finishing, priksa once again should not be any leaks in the screen. In order not smeared in progress screen printing, cover the edges of the screen (in the timber) with Duct tape, it is also to anticipate leakage at the ends of the wooden screen.
Screen already diafdruk should be given a booster that does not easily fall out, using HATEMITER / EXTRA FIX (liquid pink). Polishing the whole surface of the screen with the amplifier, then drain. Treat screen well because it is very susceptible to impurities such as sand and dust. Keep the screen of the reach of children, because it is not children’s toys. If the finish is used, should be immediately cleaned of at least part drawing / writing in order not clogged.
Screen printing plastic base material. At any menyablon perinsipnya is the same way the process, from the making of the film, print to print the screen. Just be aware of is the different types of screen and paint, this should not be confused !!!
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