Silk-screen printing process in today's various industries has been widely used, almost most of the industries involved in packaging will need to screen printing. Among them, the cosmetics industry is also the use of more, because most of theCosmetic PackagingAll need to be applied to screen printing, whether it's the outer carton or the inner bottle.silkscreen printingAre indispensable. So we have a detailed understanding of the screen printing process, the following let the editor to popularize this knowledge.

I. What is silkscreen?

Screen printing belongs to perforated printing, which is known as one of the four major printing methods along with lithography, letterpress and gravure. Perforated printing includes transcription plates, skeletonized flower plates, flower spraying and screen printing. The principle of perforated printing is that the printing plate (paper-film plate or other plates made on the base of the plate can pass through the ink eyelets) in the printing, through a certain pressure so that the ink through the perforation of the perforated plate to transfer to the substrate (paper, ceramics, etc.) to form the image or text.

Printing through the squeezing of the squeegee, so that the ink through the mesh of the graphic part of the transfer to the substrate, the formation of the same graphic as the original. Screen printing equipment is simple, easy to operate, printing, plate making simple and low cost, adaptable. Screen printing wide range of applications common prints are: color paintings, posters, business cards, framed covers, commodity labels and printed textiles.

Cosmetic OEM package material screen printing process analysis

Second, screen printing principle

Screen printing consists of five major elements, namely, screen printing plate, squeegee, ink, printing table and substrate. The basic principle of screen printing is: the use of screen printing plate graphic part of the mesh through the ink, non-graphic part of the mesh is impermeable to the basic principle of printing. Printing in the screen printing plate on one end of the pouring ink, scraping scraper in the screen printing plate on the ink parts to apply a certain pressure, while moving towards the other end of the screen printing plate. The ink is squeezed by the squeegee from the mesh of the graphic part to the substrate during the movement. Due to the viscous effect of the ink and make the imprint fixed within a certain range, the printing process scraper is always with the screen printing plate and substrate line contact, contact line with the scraper to move and move, due to the screen printing plate and the substrate to maintain a certain gap between the screen printing plate and the screen printing plate through its own tension and the production of the scraper's reaction force, this reaction force is known as the rebound force. Due to the role of the rebound force, so that the screen printing plate and the substrate was only mobile line contact, while the other parts of the screen printing plate and the substrate for the detached state. Make the ink and screen fracture movement, to ensure the precision of printing size and avoid rubbing dirty substrate. When the scraper scraped through the entire page after lifting, while the screen printing plate is also lifted, and the ink lightly scraped back to the initial position. This is a printing stroke.

Third, cosmetic processing package silk screen printing precautions

1、Screen printing is generally used as a graphic marking processing process for packaging products, which has an important impact on the product image, so it is more demanding in terms of technology.

2, glass bottle silkscreen: in the blank transparent or frosted or spray effect of the bottle silkscreen, to choose high-temperature ink, coloring by high-temperature baking and out, will not fade and not easy to scratch, the color is more subdued, to choose a high-temperature furnace manufacturers for silkscreen, the starting volume of more than 5,000, 5,000 or less according to the 500 yuan / paragraph / color charges, 5,000 or more according to the $ 0.1 / color time calculation.

3, in the design should be considered up to not more than 2 colors, out of the film to be out of the negative, text, patterns, lines should not be too fine or too large, easy to cause broken lines or ink accumulation phenomenon, should be proofed before mass production to confirm, to avoid color differences.

4, if the frosted glass bottle has a misprinting situation can be repolished process and then printed, the processing fee of 0.1 yuan -0.2 yuan / one.

5, round bottles printed in the same color according to a color, flat or oval, etc., according to the number of printed surfaces and the number of printed colors on the printed surface as the basis for calculation.

6, plastic containers, ordinary ink and UV ink screen printing, UV ink is more widely used, the word and figure has a three-dimensional sense, more glossy, not easy to fade, can be printed in multi-color effect, the starting volume of print is generally more than 1000.

7, glass bottles and plastic bottles screen printing to version of the fee, such as new specifications for packaging bottles and screen printing plant without this corresponding fixture to charge fixture fee, but can do a certain amount of screen printing to offset this cost, such as business amount of more than 20,000 can be exempted from this cost, the situation of different manufacturers have different conditions, the general screen printing screen plate fee of 50-100 yuan / a, fixture fee of 50 yuan / a. Stamping plate fee is 200 RMB/pc.

8, batch screen printing before sampling, confirm the effect of graphic screen printing after production, after confirming the production adjustment cycle of 4-5 days, depending on the difficulty of screen printing and the number of different.

9, usually screen printing factory has hot stamping, hot stamping silver and other processing technology, screen printing methods are manual, mechanical screen printing, pad printing and sticker pad printing and other technologies.

10, in the production of the use of silkscreen bottles, attention should be paid to avoid excessive handling or collision, to avoid the effect of abrasive silkscreen, the production of attention to the choice of a reasonable way to disinfect.

11, screen printing costs as low as 0.06 yuan / color, but need to pay special attention to screen printing is not good enough to achieve the desired design effect, there may be scrapped the whole batch of containers. Screen printing can be achieved by spot-color percentage of screen printing can be rich in color.