How is the logo printed on the cup? How many ways? At present, the printing method of logo and pattern on the cup depends on the specific situation.
The following describes the mainstream cup screen printing process in the market:
Screen printing is to stretch silk fabric, synthetic fiber fabric or metal mesh on the screen frame, and make screen printing plate by hand engraving paint film or photochemical plate making. Modern screen printing technology uses photosensitive materials to make screen printing plates by photographic plate making
Plate making method:
The method of direct plate making is to first lay the wrist film base coated with photosensitive material on the worktable with the photosensitive film face up, lay the stretched wrist mesh frame flat on the film base, then put the photosensitive slurry in the mesh frame and apply it under pressure with a soft scraper, remove the plastic film base after sufficient drying, and attach the photosensitive film wrist mesh to it for plate printing, which can be used after development After drying, silk screen printing is made.
Process flow:
stretched Net – degreasing – drying – stripping film base – exposure – Development – drying – Revision – screen closure
working principle:
Screen printing consists of five elements: screen printing plate, scraping scraper, ink, printing table and substrate.
The basic principle of screen printing is to use the basic principle that the mesh of the graphic part of the screen printing plate is ink permeable and the mesh of the non graphic part is ink impermeable.
When printing, pour ink into one end of the screen printing plate, apply a certain pressure on the ink part of the screen printing plate with the scraping scraper, and move towards the other end of the screen printing plate at the same time. The ink is squeezed from the mesh of the graphic part to the substrate by the scraper during movement. Due to the viscosity of the ink, the imprint is fixed within a certain range. During the printing process, the scraper is always in line contact with the screen printing plate and the substrate, and the contact line moves with the movement of the scraper. Due to a certain gap between the screen printing plate and the substrate, the screen printing plate produces a reaction force on the scraper through its own tension, This reaction is called resilience. Due to the role of resilience, the screen printing plate and the substrate are only in mobile line contact, while the other parts of the screen printing plate are separated from the substrate. Make the ink and screen break, ensure the printing dimensional accuracy and avoid rubbing the substrate. When the scraper scrapes the whole layout, it lifts up, and the screen printing plate also lifts up, and gently scrapes the ink back to the original position. This is a printing trip.
Advantages of screen printing:
(1) Not limited by the size and shape of the substrate
Screen printing can not only print on the plane, but also print on the shaped object with special shape, such as spherical surface. Anything with shape can be printed by screen printing. Screen printing on cups is very common
(2) The layout is soft and the printing pressure is small
The screen is soft and elastic.
(3) Strong ink layer coverage
It can be printed in pure white on all black paper, with strong three-dimensional sense.
(4) Suitable for various types of inks
(5) Strong optical rotation resistance
It can keep the luster of printed matter unchanged. (temperature and sunlight have no effect). This makes printing some self-adhesive without additional coating and other processes.
(6) Flexible and diverse printing methods
(7) Plate making is convenient, the price is cheap and the technology is easy to master
(8) Strong adhesion
(9) It can be pure manual silk screen printing or machine printing
(10) It is suitable for long-term display, and the advertisements outside are expressive
Strong three-dimensional sense:
With rich texture, the ink layer thickness of offset printing and embossing is generally 5 microns, gravure printing is about 12 microns, the ink layer thickness of flexographic (aniline) printing is 10 microns, and the ink layer thickness of screen printing far exceeds the thickness of the above ink layer, generally up to about 30 microns. Thick screen printing for special printed circuit board, with ink layer thickness up to 1000 microns. Braille braille is printed with foamed ink, and the thickness of foamed ink layer can reach 1300 microns. Screen printing has thick ink layer, rich printing quality and strong three-dimensional sense, which can not be compared with other printing methods. Screen printing can not only monochrome printing, but also chromatic printing and screen color printing.
Strong light resistance:
Because screen printing has the characteristics of missing printing, it can use all kinds of inks and coatings, not only slurry, adhesive and various pigments, but also pigments with coarse particles. In addition, screen printing ink is easy to deploy, for example, the light resistant pigment can be directly placed in the ink, which is another feature of screen printing. Screen printing products have great advantages of strong light resistance. The practice shows that according to the maximum density range measured after one embossing on coated paper with black ink, offset printing is 1.4, convex printing is 1.6 and gravure printing is 1.8, while the maximum density range of screen printing can reach 2.0. Therefore, the light resistance of screen printing products is stronger than that of other kinds of printing products, which is more suitable for outdoor advertising and signs.
Large printing area:
The maximum area size printed by general offset printing, embossing and other printing methods is the full sheet size. If it exceeds the full sheet size, it is limited by mechanical equipment. Screen printing can be used for large-area printing. Today, the maximum range of screen printing products can reach 3 meters × 4 meters or more.
The above four points are the differences between screen printing and other printing, as well as the characteristics and advantages of screen printing. Understand the characteristics of screen printing, in the selection of printing methods, we can develop strengths and avoid weaknesses, highlight the advantages of screen printing, so as to achieve a more ideal printing effect.
UV glazing:
Local UV glazing refers to the silk screen printing of a pattern on the original black printing with UV varnish. After applying UV varnish, compared with the surrounding printing effect, the polishing pattern appears bright, bright and three-dimensional. Because the silk screen printing ink layer is thick, it will bulge after curing and look like an indentation. Silk screen UV glazing is stronger than offset UV in height, smoothness and thickness, so it has always been favored by foreign merchants.
The local UV glazing of silk screen printing has solved the adhesion problem on the film Bop or petpopp after black printing, and it can also be convex. It is scratch resistant, folding resistant and low odor. This creates a large market space, which can be applied to printing fields such as cups, trademarks, books, publicity and so on.
The biggest advantages in the cup industry
The biggest advantages in the cup industry are: convenient and cheap plate making, low single printing cost, and the printed pattern has a three-dimensional feeling. It is applicable to a wide range of cups. It can be printed on stainless steel cups, aluminum sport bottles, plastic cups, sports bottles, thermos cups, coffee cups, beer cups, car cups, hip flask, ceramic cups, barware and various gifts. If you need to print on the cup, please contact us and we will design the best scheme for you
Post time: Feb-04-2022