{"id":4672,"date":"2026-04-06T08:37:56","date_gmt":"2026-04-06T01:37:56","guid":{"rendered":"https:\/\/hadupack.com\/?post_type=product&p=4672"},"modified":"2026-10-12T16:00:47","modified_gmt":"2026-10-12T09:00:47","slug":"in-tem-niem-phong","status":"publish","type":"product","link":"https:\/\/hadupack.com\/en\/san-pham\/in-tem-niem-phong\/","title":{"rendered":"Print sealing labels"},"content":{"rendered":"

<\/p>\n

What is a tamper-evident seal?<\/strong><\/em><\/span><\/h2>\n

Tamper-evident seals are labels made from special materials and using specialized printing techniques that can indicate whether a product has been opened or tampered with. When someone attempts to tear off or move these labels, they are permanently damaged, leaving a “VOID” mark or an irreparable “torn” pattern, proving that the product has been tampered with. They are commonly used for packaging seals, seals on valuable items, and anti-counterfeiting applications in the electronics and medical industries.<\/span><\/p>\n\n\n\n
\"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u25c6<\/span>Learn more:<\/span><\/p>\n

    \n
  1. https:\/\/hadupack.com\/san-pham\/decal-cam-nhiet\/<\/a><\/span><\/li>\n
  2. https:\/\/hadupack.com\/san-pham\/tem-7-mau\/<\/a><\/span><\/li>\n
  3. https:\/\/hadupack.com\/san-pham\/in-tem-ma-vach\/<\/span><\/a><\/span><\/li>\n<\/ol>\n

    Core technologies and features of tamper-evident security seal labels:<\/strong><\/em><\/span><\/h3>\n
      \n
    1. Physical damage: Uses highly fragile materials, such as fragile paper or special films, that cannot be completely removed after application.<\/span><\/li>\n
    2. Residual traces: Uses VOID label materials that leave a specific pattern or text (such as VOID, VOIDED) on the object after peeling.<\/span><\/li>\n
    3. High-tech anti-counterfeiting: Combines laser holographic technology (laser anti-counterfeiting), invisible fluorescent ink, color-changing ink, and high-precision serial number\/barcode printing to ensure that the labels cannot be copied.<\/span><\/li>\n
    4. Peel resistance: Uses high-strength adhesives that withstand chemicals and temperature fluctuations, adapting to various packaging environments.<\/span><\/li>\n<\/ol>\n\n\n\n
      \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Application scenarios:<\/strong><\/em><\/span><\/h3>\n
        \n
      1. Security sealing: Electrical equipment, confidential documents, and express delivery packaging seals.<\/span><\/li>\n
      2. Brand anti-counterfeiting: Labels for electronic products, healthcare products, high-end goods, and cosmetics.<\/span><\/li>\n
      3. Technical calibration: Calibration certificates and equipment warranty labels.<\/span><\/li>\n<\/ol>\n\n\n\n
        \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        Sealing label printing production process<\/strong><\/em><\/span><\/h2>\n

        The printing and production process for anti-counterfeiting labels typically includes: customized design, material preparation, printing, variable data printing (anti-counterfeiting codes), silver coating\/scratch-off coating production, die-cutting, quality inspection and defective product removal, and shipping. Roll paper is mainly used for high-speed production, employing technologies such as QR codes and holographic anti-counterfeiting, and finally, quality inspection ensures that the labels remain intact and valid.<\/span><\/p>\n\n\n\n
        \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        Label printing process:<\/strong><\/em><\/span><\/h3>\n
          \n
        1. Design and prepress preparation: Design the artwork, separate colors, and prepare printing plates (flexographic, gravure) or print directly (digital printing).<\/span><\/li>\n
        2. Material selection and printing: Choose paper, PE, PET, PP, etc., depending on the application. Common methods include flexographic printing (transferring ink using an anilox roller), offset printing, or digital printing.<\/span><\/li>\n
        3. Surface treatment: Apply glossy\/matte lamination, hot stamping, spot UV coating, etc., to enhance aesthetics and abrasion resistance.<\/span><\/li>\n
        4. Die-cutting and slitting: The printed material roll is cut into labels of specific shapes (die-cutting), and the excess material is removed, forming finished rolls.<\/span><\/li>\n<\/ol>\n\n\n\n
          \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Sealing process<\/strong><\/em><\/span><\/h3>\n
            \n
          1. Product filling: Goods are placed into plastic bags, bottles, or specialized packaging.<\/span><\/li>\n
          2. Pre-sealing preparation: The sealing area is prepared using robotic arms or manually to ensure it is free of foreign objects and flat, preventing leaks caused by incomplete sealing.<\/span><\/li>\n
          3. Heat sealing: The sealing machine rapidly heats the specialized packaging material to a specific temperature (usually 150-200\u2103) to soften the material, and applies uniform pressure through pressing rollers.<\/span><\/li>\n
          4. Cooling and forming: Brief cooling solidifies the molten plastic layer, forming a strong seal to prevent leakage of the product inside.\u00a0<\/span><\/li>\n<\/ol>\n\n\n\n
            \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            Variable Data Printing\/Lamination<\/strong><\/em><\/span><\/h3>\n
              \n
            1. Digital printing: Print anti-counterfeiting codes (regular or encrypted) and shipping codes.<\/span><\/li>\n
            2. Anti-counterfeiting linkage: Ensure the uniqueness of labels and enter them into the database.<\/span><\/li>\n
            3. Scratch-off layer: Print a silver or black scratch-off layer over the encrypted area to conceal the anti-counterfeiting code and prevent premature scanning.<\/span><\/li>\n
            4. Die-cutting: Use a die-cutting tool to cut the printed material into predetermined shapes and remove unwanted excess material.<\/span><\/li>\n
            5. Inspection: Remove labels with unclear codes or defective designs using quality inspection equipment or manually to ensure that all shipped products meet the standards.<\/span><\/li>\n
            6. Shipping: Cut and package qualified products into the required final format (individual sheets or rolls) and ship them.<\/span><\/li>\n<\/ol>\n\n\n\n
              \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

              Important technical points about seal labeling<\/strong><\/em><\/span><\/h3>\n
                \n
              1. Composite materials: Labels and packaging are often made of multiple layers of composite materials, with an inner heat-sealing layer (such as PE, CPP) and an outer printing layer (such as PET, BOPP).<\/span><\/li>\n
              2. Static electricity control: During high-speed production, static electricity buildup can lead to inaccurate label application and film warping in the sealing area, making the use of static eliminators necessary.<\/span><\/li>\n
              3. Quality control: Printing defects and seal strength are detected through visual inspection systems.<\/span><\/li>\n<\/ol>\n\n\n\n
                \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                Classification of anti-tampering labels<\/strong><\/em><\/span><\/h2>\n

                Anti-counterfeiting labels are primarily classified according to their technical principles, materials, and presentation formats, including common QR code anti-counterfeiting labels (digital verification), laser anti-counterfeiting labels (three-dimensional images), and fragile paper\/VOID anti-counterfeiting labels (single-use). They are widely used in industries such as electronics, consumer chemicals, and food to ensure product uniqueness and authenticity. Detailed explanations of the main types:<\/span><\/p>\n\n\n\n
                \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                Classification by anti-counterfeiting technology\/form<\/strong><\/em><\/span><\/h3>\n
                  \n
                1. QR code anti-counterfeiting labels: Modern and widely used, supporting one code per item, which can be scanned to verify authenticity, including technologies such as color coding, temperature sensitivity, and light sensitivity.<\/span><\/li>\n
                2. Digital anti-counterfeiting (electronic anti-counterfeiting codes): Scratch off the coating to reveal a unique password, which can be verified by phone, SMS, or website.<\/span><\/li>\n
                3. Three-dimensional laser anti-counterfeiting (Laser): Uses rainbow three-dimensional laser technology to create vivid images that are difficult to counterfeit.<\/span><\/li>\n
                4. Special breakable\/tearable labels: After being peeled off, they leave behind the words “VOID”, “opened” or become torn, preventing the labels from being reused.<\/span><\/li>\n<\/ol>\n\n\n\n
                  \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                  Classification by material and process<\/strong><\/em><\/span><\/h3>\n
                    \n
                  1. Self-adhesive labels: The most commonly used conventional material.<\/span><\/li>\n
                  2. Tearable paper\/Tearable self-adhesive labels: Paper that tears easily and is easily damaged when peeled off.<\/span><\/li>\n
                  3. Special substrates: Including PVC, PET, aluminum foil, fiber paper (with anti-counterfeiting patterns), etc.<\/span><\/li>\n<\/ol>\n

                    Classification by functional characteristics<\/strong><\/em><\/span><\/h3>\n
                      \n
                    1. Temperature-sensitive\/humidity-sensitive labels: Disappear or change color when exposed to high temperatures or water droplets.<\/span><\/li>\n
                    2. NFC\/RFID chip labels: Smart chip sensing technology.<\/span><\/li>\n<\/ol>\n\n\n\n
                      \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                      Methods for selecting anti-counterfeiting security seal label printing<\/strong><\/em><\/span><\/h2>\n

                      The choice of anti-counterfeiting label printing methods should be based on the level of security, cost, and appearance requirements. Common methods include: laser hologram anti-counterfeiting printing (visual anti-counterfeiting), digital barcode\/QR code anti-counterfeiting printing (digital tracking), special ink printing (fluorescent, temperature-sensitive color-changing), gravure printing technology (high-security embossed feel), and a combination of multiple processes (such as flat embossing). For high-risk products, priority should be given to complex, high-cost, and unique combined processes.<\/span><\/p>\n\n\n\n
                      \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                      1. Common anti-counterfeiting label printing technologies<\/strong><\/em><\/span><\/h3>\n
                        \n
                      1. Laser hologram printing creates a barrier film effect: It creates unique visual features through the diffraction of micro-nano structures, such as rainbow effects and 3D effects, making counterfeiting very difficult.<\/span><\/li>\n
                      2. Anti-counterfeiting serial number\/QR code printing: Assigns a unique identification code to each label, which can be used with anti-counterfeiting systems for encryption, tracking, and terminal queries.<\/span><\/li>\n<\/ol>\n

                        Special ink printing:<\/strong><\/em><\/span><\/p>\n

                          \n
                        1. Temperature-sensitive color-changing ink: The color changes with temperature.<\/span><\/li>\n
                        2. Infrared\/fluorescent ink: Develops color under ultraviolet light, suitable for high-security requirements.<\/span><\/li>\n
                        3. Gravure printing and combined printing processes: Gravure printing creates a raised, tactile effect, making it suitable for high-end anti-counterfeiting; embossing combines different processes on a single label.<\/span><\/li>\n<\/ol>\n\n\n\n
                          \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          2. Selection criteria<\/strong><\/em><\/span><\/h3>\n
                            \n
                          1. Security level: For products with a high risk of counterfeiting, choose a high security level (laser hologram + spot color ink + serial number); for products with a lower risk, choose a regular QR code.<\/span><\/li>\n
                          2. Brand image: High-end products use materials with good visual effects, such as laser engraving and hot stamping; For daily necessities, focus on ease of scanning.<\/span><\/li>\n
                          3. Cost budget: Combined processes and customized anti-counterfeiting solutions are the most expensive; standard QR codes and digital codes are the most cost-effective.<\/span><\/li>\n
                          4. Application scenarios: For electrical equipment, choose heat-resistant and wear-resistant composite materials; for food, choose environmentally friendly materials.<\/span><\/li>\n<\/ol>\n

                            3. Selection of printing manufacturers<\/strong><\/em><\/span><\/h3>\n
                              \n
                            1. Capability verification: Have official printing certificates and anti-counterfeiting licenses.<\/span><\/li>\n
                            2. Technological innovation: Manufacturers with independent design and research and development capabilities in anti-counterfeiting technology.<\/span><\/li>\n
                            3. Compliance: Ensure the uniqueness, confidentiality and non-duplication of anti-counterfeiting data.<\/span><\/li>\n<\/ol>\n

                              Overall, it is recommended to combine the above anti-counterfeiting methods to achieve the best anti-counterfeiting results.<\/span><\/p>\n\n\n\n
                              \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                              Tips for preserving tamper-evident security seals<\/strong><\/em><\/span><\/h2>\n

                              The key to preserving anti-counterfeiting labels lies in sealing, moisture protection, temperature control, and avoiding light exposure. Labels should be stored at room temperature ( 5 degrees C – 30 degrees C), in a dry and well-ventilated environment, away from direct sunlight and cold weather (such as temperatures below 0 degrees C) to prevent damage to the adhesive.<\/span><\/p>\n\n\n\n
                              \"\"<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                              Specific preventive measures for storage:<\/strong><\/em><\/span><\/p>\n

                                \n
                              1. Sealed storage: Before and after use, anti-counterfeit labels should be sealed in an airtight bag or their original packaging to prevent the adhesive from drying out and losing its effectiveness when exposed to air.<\/span><\/li>\n
                              2. Temperature control: The optimal temperature is usually around . Avoid storing them in environments that are too hot or too cold.<\/span><\/li>\n
                              3. Moisture and water protection: The environment must be dry to prevent moisture from warping the release liner or reducing adhesion.<\/span><\/li>\n
                              4. Light protection: Avoid prolonged exposure to direct sunlight to prevent the label material from aging or fading.<\/span><\/li>\n
                              5. Proper placement: Anti-counterfeit labels should be laid flat and must not be folded or stacked on top of one another to avoid damaging the chip or coating.<\/span><\/li>\n<\/ol>\n

                                <\/p>","protected":false},"excerpt":{"rendered":"

                                What is a tamper-evident seal? Tamper-evident seals are labels made from special materials and using specialized printing techniques that can indicate whether a product has been opened or tampered with. When someone attempts to tear off or move these labels, they are permanently damaged, leaving a “VOID” mark or an irreparable “torn” pattern, proving that … <\/p>\n

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