Process refers to the various ways of secondary processing of printed materials, the purpose is to enhance the visual effect of printed materials.
A newbie will definitely encounter some challenges when it comes to custom their own brand packaging box. Therefore in this article, the package editor will bring you a comprehensive inventory of printing on packaging material, to help you have a more former comprehensive understanding of the packaging printing process.

Some of such packaging material process you may want to know about:

Commonly used packaging printing process

Four-color printing

1. the so-called four-color that: cyan (C), magenta (M), yellow (Y), black (K) four inks, all colors can be mixed by these four inks, the final color graphics.

2. the most common is also the most common printing, different substrates printed on the effect of different.

Four-color printing

Spot color printing

spot-color printing refers to the printing specifically with a special ink to print the color, than the four colors mixed out of the color is more bright. Commonly used is spot gold, spot silver.

spot color color many colors, refer to the Pantone color card, spot color can not achieve gradient printing, there is a need to join the four-color printing.

Spot color printing

Gluing

1. After printing, a transparent plastic film is applied to the printed surface by hot pressing to protect and increase the glossy surface, see the picture below.

2. The most basic process of paper box surface treatment. Similarly, there is a varnish, but the glue can enhance the hardness and tensile properties of the paper.

Gluing

Over-matte laminating

1.After printing, a transparent plastic film is applied to the printed surface by heat pressing to protect and increase the luster, the surface is matte, see the picture below.

2. The most basic process of carton surface treatment, similar to varnish, but over glue can enhance the hardness and tensile properties of paper

Over-matte laminating

Spot UV

1. printing need to highlight the parts of the local varnish brightening, so that the local pattern has a more three-dimensional effect.

2. Printed with over matte glue process, no effect when over glossy glue.

Spot UV

Stamping

1. hot stamping is the use of the principle of heat pressure transfer, the aluminum layer in the aluminum electrochemical transfer to the surface of the substrate to form a special metallic luster effect.

2. printing raw materials are gold, silver, red, green, blue and other various colors, but stamping can only be a single color, a wide variety of colors, but not what color market have.

Stamping

Embossing

1. Using a set of concave and convex stencils that correspond to the yin and yang of the image, the substrate is placed between them, and the embossed embossed image is pressed out by applying a large pressure.

2. Various thicknesses of paper can be used, but cardboard cannot be embossed.

Embossing

Spray code

1. the process of printing logo (production date, shelf life, batch number, corporate logo, etc.) on the product with a printer.

2. can print simple character patterns, more flexible.

Spray code

Composite bags

1. Composite bags are suitable for vacuum packaging or general packaging of food, electronic products, chemical, pharmaceutical, tea and other products.

2. The process that can be done is basically the same as paper, which can be screen printing, printing, hot stamping.

Composite bags

Blister

1. Blister is a transparent material, the main raw material is PVC, PE, or PET. 2.

2. It can replace the paper directly to make the box, and can also be used with the card making molding

3. can be used inside the package to fix the product, called blister inside.
4. Can be screen printed, printed, and also can be hot stamped
5. can be printed on the machine, but the printing cost is high, small production quantities are generally used only screen printing.

Blister

OPP Bag:

1. OPP bags are oriented polypropylene, which is a kind of plastic, in fact, plastic bags.

2. before loading the outer box, the product first set of OPP bags, appear clean and hygienic.
3.different materials and PP plastic bags, PE plastic bags.
4.with high transparency, more brittle and other characteristics, but also according to customer needs to print a variety of patterns and punching. 

OPP bag

EVA

1. The chemical name is ethylene vinyl acetate copolymer, and the finished products made of it have the characteristics of good flexibility, shockproof, anti-slip and strong resistance to pressure.

2. used in packaging and interior, used to fix and protect products.

3. There are many colors to choose from, and the surface can be flocked and wrapped with flannel fabric process to enhance the visual effect.

EVA

Sponges

1. It is a porous material with good elasticity. The holes have different density and different elasticity.

2. Used in packaging and inside, used to fix and protect products.

3. There are a variety of colors to choose from, generally used directly, no longer overlay process.

Sponges

Heat Shrink Bags

1. is a kind of material to reach a certain temperature shrinkage is very strong made of transparent bags, used to protect the packaging.

2. just used to protect the packaging, no longer do other processes.

Heat Shrink Bags

Commonly used printing on packaging material

Single Powder

1. commonly used paper box material, paper thickness from 80g to 400g various thickness, higher thickness to two sheets to laminate.

2. One side of the paper is glossy and the other side is matte, only the glossy side can be printed.
3. Various colors of printing can be realized, and there is no limitation for colors.
4. The common surface treatment processes after printing are: over glue, over uv, hot stamping, embossing.

Single Powder

Pit paper

1. More straight and stiff compared to ordinary paper, with a stronger load-bearing capacity.
2. Commonly used are single pit, double pit and triple pit.
3. Various colors of printing can be achieved, but the effect is not as good as single powder.
4. Common surface treatment processes after printing are: over glue, over uv, hot stamping, embossing.

Pit paper

Cardboard

1. used to make the structure of gift boxes, laminated with a layer of single powder paper or special paper on the surface.
2. commonly used colors are black, white, gray and yellow.
3. There are also various grades of paperboard thickness, according to the weight-bearing needs to choose
4. If laminated with single powder, the process is the same as single powder paper box; if it is special paper, most of them can only be stamped, some can realize simple printing, but the printing effect is not good.

Cardboard

Specialty Paper

1. There are many kinds of special paper, here we only talk about the ones used on our packaging materials: embossed paper, patterned paper, pearl patterned paper, metallic patterned paper, gold paper, etc.
2. these papers through special treatment, can enhance the texture of the packaging grade. Embossed embossed class can not be printed, only surface stamping, star color, gold, etc. can be four-color printing.

Specialty Paper

Gold and silver cardboard

1. UV transfer technology is used to apply a layer of UV oil to the surface of the paper through a rubber blanket, and then transfer the light column film or specific patterns to the top of the printed paper through a roller, so that the surface of the paper produces a light column with the effect of laser paper.
2. can only be printed by UV machine, a variety of pattern effects can be achieved, more texture than ordinary paper, and different kinds of gloss. But the cost is relatively much dryer.

Gold and silver cardboard

Commonly used printing on packaging material

Baking Paint

1. On a substrate sanded to a certain degree of roughness, several layers of paint are sprayed and set by high temperature baking.
2. There are many kinds of colors, refer to Pantone color card. But only solid color, can not present gradient color.

Baking Paint

Oxidation

1. for aluminum or aluminum alloy to do the surface treatment process, oxidation treatment on the surface to produce surface oxide film.
2. Color is optional, refer to Pantone color card. Compared with baking paint, increased metallic texture, but only solid color, can not present gradient color.

Oxidation

Carbon Fiber

1. It is a new type of fiber material with high strength and high modulus fiber containing more than 95% carbon, which has superior performance that cannot be matched by other materials such as electrical and thermal conductivity, corrosion resistance, high temperature resistance, abrasion resistance, light weight and radiation protection.
2. After treatment, the texture of carbon fiber itself is presented, and the color is optional.

Carbon Fiber

Electroplating

1. the use of electrolytic principle in some metal surface coated with a thin layer of other metals or alloys process.
2. commonly used gold, silver, chromium plating.

Silk Screen Printing

1. By squeezing the squeegee, the ink is transferred to the substrate through the mesh of the graphic part, forming the same graphic as the original.
2. Screen printing with many colors, referring to Pantone color cards, but gradient printing is not possible.

Silk Screen Printing

Pad printing

1. Pad printing refers to the substrate is irregular-shaped surface, the use of copper or steel intaglio, through the silicone rubber cast into a hemispherical pad printing head, so as to press the layout to transfer the ink to the substrate to complete the transfer printing method. Simply put, pad printing can print small and multi-color overprinted products, and there is no requirement for the shape of the product.
2. pad printing can achieve many effects that can not be achieved by screen printing.

Pad printing

Water transfer printing

1. with a special chemical treatment of the film, after printing on the desired color pattern, sent flat on the surface of the water, the use of water pressure, the color pattern will be uniformly transferred to the surface of the product, the coating film is automatically dissolved in water after washing and drying, and then on a transparent protective layer, which is the product has presented a very different visual effect.
2. water transfer printing can do multi-color, multi-pattern surface printing, such as wood grain, leather grain, etc.

Water transfer printing

Corrosion

1. A process of forming graphics by chemically treating and partially etching the surface.
2. No color optional, showing the object’s original color, but after etching can be additionally sprayed with oil to achieve a color effect.

Corrosion

Laser engraving

Laser is also called laser engraving or laser marking, is a kind of surface treatment process with optical principle, first priming (after spraying oil or spraying color, then spraying surface color, in laser to reveal the primed color pattern).

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Why Choose Epdly as your custom packaging box manufacturers.

EPDLY is a printing and packaging & plastic mold company located in Shenzhen, China. We have over 10 years of experience in the printing and packaging field. With our deep level of expertise and specialized in-house printing and assembly factories, we have provided packaging solutions to over 500 different companies from all across the world.
Here below pls check the video of our printing and packaging factory and molding factory.