Detailed Process of QR Code Anti-Counterfeiting Label Production

What Is a QR Code Anti-Counterfeiting Label?

QR code anti-counterfeiting labels are self-adhesive labels that combine QR code technology with anti-counterfeiting technology. Consumers can verify product authenticity by scanning the QR code with their mobile phones, while brand owners use a one-product-one-code system to achieve product traceability and channel management.

Unlike ordinary QR codes, anti-counterfeiting QR codes are generated using encryption algorithms, and the code pattern on each label is unique and cannot be copied or counterfeited. The face material is usually coated paper or synthetic paper. The adhesive layer uses permanent or removable glue depending on the substrate, and the backing paper uses glassine paper.

Production Process of QR Code Anti-Counterfeiting Labels

Producing a complete set of QR code anti-counterfeiting labels usually involves the following steps:

Step 1: Requirement Confirmation and Solution Design

Clients need to clarify the usage scenario of the anti-counterfeiting label: What product will it be pasted on? What functions need to be implemented? Is it only for scanning to verify authenticity, or should it also incorporate traceability and marketing?

Brand owners also need to determine how QR code information will be carried. Common practice is to encode product batch numbers, production dates, anti-counterfeiting codes, etc., into encrypted QR codes, while retaining plaintext query codes as an alternative verification method.

Step 2: Anti-Counterfeiting Data Generation

The core of anti-counterfeiting labels is data. The system generates a batch of unique anti-counterfeiting codes (usually 16-20 digit+letter combinations) and maps them to corresponding QR code patterns. Data generation requires encryption protection to prevent counterfeiting in batches after data leakage.

Generated data is typically stored in a desensitized manner - only hash values of anti-counterfeiting codes are stored in the database, not plain codes. This way, even if the system is attacked, attackers cannot directly obtain valid anti-counterfeiting codes.

Step 3: Digital Printing and Variable Data Jet Printing

Printing of anti-counterfeiting labels is divided into two parts: fixed pattern printing and variable data jet printing.

Fixed patterns include brand LOGO, product name, background patterns, etc., which can be completed using offset printing or digital printing. Variable data parts (QR codes, anti-counterfeiting codes, serial numbers) are jet-printed one by one using digital printing equipment. HP Indigo digital printing machines can complete simultaneous printing of color patterns and variable data in a single pass, with each label having different content.

Step 4: Die-Cutting and Waste Removal

After printing is complete, die-cutting is used to cut the label material according to the designed shape. Label die-cutting is divided into two types: through-cut and kiss-cut. Through-cut cuts through both face material and backing paper, while kiss-cut only cuts through the face material without cutting the backing paper, facilitating subsequent manual or automatic labeling.

The waste removal process removes excess face material after cutting, leaving only finished labels evenly arranged on the backing paper.

Step 5: Quality Inspection and Packaging

Finished anti-counterfeiting labels need to be inspected one by one: Are QR codes clear and scannable? Do anti-counterfeiting codes correspond correctly? Are die-cut edges neat? For large-batch orders, automatic label inspection machines with visual detection systems are usually used for full inspection.

Qualified labels are packaged in rolls or sheets, accompanied by corresponding anti-counterfeiting data traceability tables and product certificates before delivery to clients.

Key Process Parameters

The printing precision of QR code anti-counterfeiting labels directly affects scanning success rates. QR code module size is recommended to be no less than 0.3mm, and printing resolution should be no less than 1200dpi. When using digital printing, the zero plate fee and 1-piece minimum order features are particularly suitable for small-batch anti-counterfeiting label proofing and trial production.

If labels need to be pasted on curved surfaces (such as bottle bodies), synthetic paper or PET materials are recommended for the face material. These materials have good flexibility and can conform to curved surfaces without edge lifting.