In recent years, with the continuous development of the product packaging market, the brand onwers' requirements for anti-counterfeiting labels have also increased, and more and more anti-counterfeiting technologies have been applied to self-adhesive labels. As brand onwers' requirements for anti-counterfeiting technology become higher and higher, we often see several different anti-counterfeiting technologies being used together on the outer packaging of the same product.

Ink anti-counterfeiting

1. Optically variable ink Optically variable ink refers to a special ink that will show different colors at different angles after printing, such as purple turning green, yellow turning green, etc. This ink contains special optical variable additives that can reflect different light at different angles, thereby showing different colors. The most common is the optical variable ink used on RMB. The production cost of this ink is high, and there are few manufacturers that can produce this ink. Once the user and the manufacturer sign a confidentiality agreement, it is difficult for other users to imitate, so the anti-counterfeiting performance of optical variable ink is better. It should be noted that in order to achieve a better optical variable effect, optical variable ink must have a certain thickness, so it is generally printed by screen printing.

2. Invisible ink Invisible ink refers to a special ink that is colorless under normal light and develops color under specific light (such as ultraviolet light). At present, the common invisible inks on the market are three types of color development under ultraviolet light, infrared light and dual-band ultraviolet light, and the colors displayed are mainly red, yellow, blue and green. This kind of ink is particularly suitable for printing hidden marks, which cannot be seen directly by naked eyes by people who don't know it. When it is necessary to distinguish the authenticity, the hidden mark is illuminated with corresponding light, and the font or pattern will appear. There are patterns printed with invisible ink on the RMB. However, the production cost of this kind of ink is low, and there are many manufacturers. If this method is used alone for anti-counterfeiting, it is often easy to be imitated. Therefore, special fonts or patterns are needed to increase the difficulty of imitation. 

Material anti-counterfeiting

1. Fragile materials

Fragile materials have low surface strength and tear resistance. Once the printed label is attached to the surface of the object, it cannot be completely peeled off. Therefore, this material is often used as a sealing label to prevent someone from opening the box and replacing the goods inside, and also to prevent the packaging from being recycled and reused by counterfeiters.

2. Font mold anti-counterfeiting

Font mold anti-counterfeiting is also called sticking and leaving words. This material has been specially processed during processing, and can be made into corresponding words according to customer requirements. The more common words are "the label has been opened". The self-adhesive labels made of this material are also often used as sealing labels for packaging boxes. Once the label is opened, the words "the label has been opened" will be left at the part where the label is opened, and the glue layer of the label will be destroyed and cannot be restored. This can prevent the packaging from being recycled and reused, and can also remind users whether the product has been opened before. 

3. Laser font anti-counterfeiting

Laser font anti-counterfeiting is an upgraded version of font anti-counterfeiting. This material is processed to produce a special laser pattern (such as a person's head or a product's trademark) on the surface of the material. When the label is peeled off, the pattern will remain at the peeling position to form a laser pattern, and the label will also be damaged, which has the anti-counterfeiting effect of preventing the packaging box from being recycled for the second time. Since this laser pattern is usually customized and uses an engraved plate, the plate making cost is very high (usually ranging from tens of thousands to hundreds of thousands). If the user and the material manufacturer sign a confidentiality agreement, then the pattern of this engraved plate is difficult to be completely imitated. Therefore, the laser font anti-counterfeiting effect is better than the traditional font anti-counterfeiting effect. 

Printing anti-counterfeiting

1. Hidden mark anti-counterfeiting and anti-counterfeiting line technology

When printing, you can use a computer to make some tiny text or patterns, and then embed these tiny text or patterns into some larger patterns, so that these tiny text or patterns are difficult to be discovered, thus forming a hidden mark anti-counterfeiting effect. When it is necessary to distinguish the authenticity, you can use a magnifying glass to observe whether there is a hidden mark, so as to distinguish the authenticity of the product. This kind of hidden mark has strong confidentiality for anti-counterfeiting, but if everyone knows where the hidden mark is, it will not have the desired anti-counterfeiting effect. Therefore, it was often used by manufacturers to distinguish the authenticity of products, and it was not very meaningful for consumers to distinguish the authenticity of products. In recent years, with the continuous development of printing technology and platemaking technology, anti-counterfeiting line technology has emerged, similar to some patterns printed on RMB. These patterns are generated using special software, and it is difficult to completely imitate them without such software. At the same time, because the patterns are relatively complex, if the imitation is not good, moire will appear during printing, while the patterns printed by genuine products will not have this phenomenon. Therefore, this anti-counterfeiting line technology was often used for banknote anti-counterfeiting in the past, and it is now also common in self-adhesive label anti-counterfeiting. 

2. Die-cutting anti-counterfeiting

Die-cutting anti-counterfeiting is relatively simple, that is, adding a flower knife pattern to the die-cutting knife, so that there are many irregular flower knife cuts on the surface of the die-cut label. Once this kind of label is attached to the object, it is difficult to completely peel it off because the flower knife on the label makes it easier to break. This anti-counterfeiting method is a "variant" of fragile materials. The process is relatively simple and it is easy to imitate, unless you work hard on the flower knife pattern design to make the pattern less easy to imitate. The advantage of die-cutting anti-counterfeiting is that the price is relatively cheap and almost no additional cost is added to the label. It is more suitable for anti-counterfeiting of products with low cost requirements and low anti-counterfeiting requirements.

RFID anti-counterfeiting

At present, more and more RFID tags are used in some high-end products in order to highlight the grade and anti-counterfeiting effect of the products. The chip is inserted into the label. Not only can the corresponding performance data of the product be written into the chip, but also the authenticity information of the product can be written. As long as the customer's mobile phone has the function of reading RFID, the authenticity of the product can be easily identified. At present, RFID anti-counterfeiting is one of the better anti-counterfeiting means. If RFID technology can be popularized in the field of labels in the future, it will provide strong support for the comprehensive popularization of smart supermarkets.

Digital anti-counterfeiting

1. Database anti-counterfeiting

Database anti-counterfeiting refers to the cooperation between self-adhesive label printing companies and anti-counterfeiting companies to print special variable numbers during printing. After purchasing the goods, consumers can enter these numbers online or call to check these numbers to know the authenticity of the product. This is an anti-counterfeiting technology. Since the investment in the database is quite huge and the cost of counterfeiting is high, the effect of database anti-counterfeiting is very good. At present, many products, especially high-end tobacco and alcohol products, have adopted database anti-counterfeiting methods.

2. Digital printing (glue-surface QR code, variable numbers)

In recent years, digital printing technology has been widely used in the field of self-adhesive labels. Some self-adhesive label printing companies have provided digital anti-counterfeiting solutions for alcohol product labels. The specific method is: local degumming treatment is performed on the glue surface of the self-adhesive material, and variable QR codes or variable numbers are printed at the degumming position. These QR codes and numbers carry a lot of information, which can prevent dealers from mixing goods, and can also connect to the database to improve the anti-counterfeiting effect. In the past, customers needed to enter numbers online or call to enter numbers to know the authenticity of the product. Now they only need to scan the code with their mobile phones to easily identify the authenticity of the product.

The several anti-counterfeiting technologies mentioned above are the most commonly used anti-counterfeiting technologies in the field of self-adhesive labels. In order to achieve better anti-counterfeiting effects, many products in daily production will use two or more anti-counterfeiting technologies. For example, some high-end wine products have several anti-counterfeiting technologies on the labels, boxes and bottles. The purpose of doing so is nothing more than to increase the cost of imitation and the difficulty of counterfeiting, so as to achieve better anti-counterfeiting effects.More details, visit us on Siga label.