Vertical sealing machine， As an important component of the packaging automation field, it plays an indispensable role in industries such as food, medicine, and daily chemical due to its high efficiency, flexibility, and strong adaptability. It not only significantly improves packaging efficiency and reduces labor costs, but also ensures product quality and safety, becoming the core equipment of modern packaging production lines.
The main working principle of vertical sealing machine
The main working principle of a vertical sealing machine is to fold, fill, seal, and cut packaging materials (usually films or composite materials) in a vertical direction to form packaging bags. Compared with traditional horizontal sealing machines, continuous band sealer machines are particularly suitable for packaging products that are difficult to place horizontally, such as bulk, granular, and powder forms. Its vertical feeding method can effectively utilize space, increase packaging density, and reduce material loss. Through a precise measurement system, the vertical sealing machine can ensure that the weight or volume of the product inside each packaging bag is consistent, meeting strict quality control requirements.
Vertical sealing machines have diverse designs and functions to meet different product and packaging needs
Common types of band sealers include pillow sealers, back sealers, and three edge sealers. The pillow sealing machine is named after its packaging bag resembling a pillow and is widely used for packaging biscuits, candies, and other foods. The back sealing machine seals the back of the packaging bag to create a beautiful packaging effect, and is commonly used for packaging products such as tea and coffee. The three edge sealing machine is suitable for packaging that needs to display the appearance of products, such as cosmetics, hardware, etc.
Modern vertical sealing machines also integrate various advanced technologies to improve automation and packaging quality
For example, the photoelectric tracking system can accurately control the position of the packaging film to ensure the alignment of the pattern; The servo drive system can achieve precise motion control, improve sealing speed and accuracy; The PLC control system can achieve intelligent management of the entire packaging process, improving production efficiency and stability. In addition, some high-end continuous band sealers are equipped with automatic weight inspection, coding, labeling and other functions, further enhancing the automation level of the packaging line.
Vertical sealing machines also face some challenges
For example, for products with irregular packaging shapes, special sealing molds and fixtures need to be customized; For fragile or deformable products, it is necessary to adjust the sealing pressure and speed to avoid damage; For high temperature or humid environments, it is necessary to choose materials with good corrosion resistance and waterproof performance. Therefore, when selecting and using a band sealer machine, it is necessary to fully consider the characteristics of the product, packaging requirements, and production environment, choose suitable equipment and configuration, and perform regular maintenance and upkeep to ensure its long-term stable operation.
In summary, vertical sealing machine, as an efficient and flexible packaging equipment, plays a crucial role in the modern packaging industry. With the continuous development and application of technology, vertical sealing machines will move towards greater intelligence, automation, and energy efficiency, bringing higher efficiency and benefits to the packaging industry.
Vertical Sealing Machine FAQs
What is a vertical sealing machine? What is its core function?
Vertical sealing machine is an automated equipment designed for vertical bag making and sealing, with core functions including:
Bag making: Fold the roll film material into a bag shape (such as back seal, three edge seal).
Filling: Fill particles/liquids (such as milk powder, shampoo) through a measuring device.
Sealing: Use heat sealing, ultrasonic or cold sealing techniques to seal the bag opening.
Splitting: Cutting into independent packaging units.
Typical applications: small packaged foods, daily chemical products, pharmaceutical powders, etc.
What are the common types of vertical sealing machines?
Classified by sealing method and structure:
Back Seal: Single longitudinal seam, low cost, suitable for snack bags.
Three side seal: both sides+top seal, strong sealing performance.
Gusset Seal: with side folds to increase capacity (such as tea bags).
Special functional type:
Vacuum sealing: Seal after vacuuming (such as meat preservation).
Inflatable sealing: Inject nitrogen gas (such as potato chip packaging).
What are the key advantages of a vertical sealing machine?
High efficiency: The speed can reach 30200 bags per minute (depending on the model).
Accurate measurement: Equipped with screw/liquid pump to achieve ± 1% filling accuracy.
Wide material adaptability: compatible with PE PP、 Aluminum plastic composite film, etc.
Small footprint: Vertical structure saves production line space.
Intelligence: Supports PLC control and fault self checking (such as temperature abnormality alarm).
How to choose a vertical sealing machine based on the product?
The following factors need to be considered:
Product Features:
Powder/granule → screw metering; Liquid → piston pump.
Easy to oxidize products → Optional nitrogen filling function.
Membrane material requirements:
High temperature sensitive materials (such as CPP) → low-temperature heat sealing or cold sealing.
High resistance diaphragm → Need to strengthen the pressure of the heat sealing knife.
Production demand: Semi automatic for low-speed (<50 bags/min) and fully automatic+linked production line for high-speed.
What are the daily maintenance points for vertical sealing machines?
Hot sealed components:
Regularly clean the residual plastic of the sealing knife (to prevent sticking to the mold).
Check if the heating element (such as thermocouple) is aging.
Transmission system:
Lubricate the guide rail/chain to avoid jamming.
Calibrate belt tension to prevent slipping.
Electrical safety:
Grounding protection to prevent static interference.
Regularly check the sensitivity of sensors (such as photoelectric locators).
