With the upgrading of consumption, more and more people are paying for packaging, as there are countless cases of packaging being used to purchase a product. But exquisite packaging cannot do without printing technology. There are many processes that can be used on the packaging of products, such as hot stamping, embossing, UV printing, frosting, flocking, die-cutting, and so on.
Film covering
Also known as "over plastic", "mounting glue", "film pasting", etc., laminating is the process of applying transparent plastic film to the surface of printed materials through hot pressing, providing protection and increasing gloss. At the same time, the color of the graphics and text is more vivid, and it also plays a role in waterproofing and anti fouling. It can be divided into two types of hot stamping: surface processing and forming processing.
At present, common laminated packaging products include cardboard boxes, cardboard boxes, handbags, fertilizer bags, seed bags, self-adhesive labels, etc.
Hot stamping
Commonly known as "hot stamping", also known as hot press printing, it is the process of making convex plates of patterns or text that need to be hot stamped, and using certain pressure and temperature to print various aluminum foil sheets onto the substrate, presenting a strong metallic light and giving the product a high-end texture. Meanwhile, due to its excellent physical and chemical properties, aluminum foil can play a role in protecting printed materials. Therefore, hot stamping technology is widely used in modern packaging printing.
"Hot stamping" is not what people think is only gold, but there can also be various techniques such as hot silver, radiant gold, green, red, and so on.
Glazing
Glazing is a process of applying (or spraying, printing) a layer of colorless transparent coating on the surface of printed materials. After leveling, drying, calendering, and curing, a thin and uniform transparent layer is formed on the surface of printed materials, which enhances the smoothness of the carrier surface and protects the precision processing function of printed images and texts. It is called polishing process. After drying, it also plays a role in protecting and increasing the gloss of printed materials, and has a waterproof and oil resistant effect on the surface of packaging.
Concave convex embossing
Concave embossing is a special technique for decorating and processing the surface of printed materials. It uses a concave convex mold to cause plastic deformation of the printed substrate under a certain pressure, thereby performing artistic processing on the surface of the printed material. The various convex graphics and patterns imprinted display different depths of patterns, with a clear sense of relief, increasing the three-dimensional and artistic appeal of the printed material.
Die cutting indentation
Die cutting indentation, also known as pressure cutting molding, buckle knife, etc. When the packaging printing paper box needs to be cut into a certain shape, it can be completed through die cutting and indentation technology.
Die cutting is a process in which steel blades are arranged into molds (or steel plates are carved into molds), frames, etc., and paper is rolled and cut into a certain shape on a die cutting machine. The hollow part of the main display surface in the middle is obtained through die cutting technology, becoming a personalized decoration in the entire packaging. Indentation is the use of steel wire to imprint marks or leave grooves for bending on paper. The process of simultaneous die-cutting and indentation processing on a die-cutting machine is called die pressing.
Local UV process
It is a silk screen printing process, which is a surface finishing technique for printed products. By locally coating UV gloss on the surface images and text of the paper box, the dazzling effect of the printed products is enhanced. Compared with the surrounding patterns, the glossy patterns appear bright, bright, and have a strong sense of three dimensionality, which can produce unique artistic effects.
Reverse frosting
The reverse frosting process requires several special base oil or gloss treatments to be completed, and some people refer to it as the reverse polishing process, which is seen as a new process of local polishing. This process is to print the printed product in the normal color sequence, and then use offset printing (or offline) to print a layer of special primer on local areas that do not require high brightness after the ink is completely dried or cured. After the primer is completely dry, UV gloss is applied to the entire surface of the printed product in a full plate manner.
In this way, a cohesive reaction occurs in the area where the UV gloss and base oil come into contact, forming a small granular ink film, forming a matte or frosted surface; And a high gloss mirror surface is formed in the UV glossy area of the unprinted base oil. The surface of the printed product ultimately forms localized high gloss and localized frosted low gloss areas. Two completely different gloss effects achieve high contrast effects in local images, embellishing and highlighting images and texts with glossy mirror surfaces.
Freezing snowflakes
The freezing point snowflake effect is an effect formed by ink screen printing on substrates such as gold card paper, silver card paper, laser card paper, PVC, etc. After wrinkling and UV curing under UV light irradiation, it has a fine sand texture and a delicate touch on the surface of the printed material. Due to its appearance as a thin layer of snow or ice on the surface of printed materials, it is commonly referred to as "snowflake" (larger pattern) or "freezing point" (smaller pattern) in the industry.
The surface of the printed product presents uniform and dense "small wrinkles" and floral patterns, accompanied by a matte effect. The ink layer is flat, the gloss is soft, and the texture is good. The surface of the printed product seems to be covered with a layer of fine snow, hence the name "snowflake" printing, also known as "freezing point" printing.
EVA
1. The chemical name is ethylene vinyl acetate copolymer, and the finished product made from it has the characteristics of good flexibility, shock resistance, slip resistance, and strong compression resistance.
2. Used in packaging and interior to secure and protect products.
3. There are multiple colors to choose from, and the surface can be processed with flocking and flannel wrapping techniques to enhance visual effects.
OPP bag
1. OPP bags are stretchable polypropylene, a type of plastic that is actually plastic bags.
Before packaging the outer box, put an OPP bag on the product to make it look clean and hygienic.
3. Different materials include PP plastic bags and PE plastic bags.
4. It has characteristics such as high transparency and brittleness, and can also print various patterns and punch holes according to customer needs.
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