2025-01-20
Blister packaging machines play a pivotal role in the packaging industry, ensuring the safe and attractive packaging of a wide range of products. This article will comprehensively introduce blister packaging machines from multiple aspects, including working principles, structural components, types, characteristics, and application fields.
Blister packaging machines primarily use heating plates, upper and lower heating tubes, and other heat - conduction devices to heat the PVC layer in the aluminum - plastic composite film rolls. This heating process softens the PVC layer, laying the foundation for the subsequent forming process. Such a heating method ensures uniform heating of the film material, thus guaranteeing the quality of blister forming.
After the film material is softened, it is precisely conveyed to the forming position by a mechanical film - feeding system. At this point, the upper and lower heat - sealing arms quickly move to firmly hold the film material for heat - sealing. During the heat - sealing process, according to different packaging materials and product requirements, the heat - sealing pressure and time can be flexibly adjusted to ensure that the heat - sealing strength meets the requirements. At the same time, a neat and beautiful heat - sealing line is ensured. In addition, the packaging device quickly evacuates to create an environment that is oxygen - free, moisture - proof, and resistant to aging, providing reliable protection for the products.
After blister forming and vacuuming, products are accurately filled into the blisters. Whether they are capsules, tablets, or other products, precise filling can be achieved. 紧接着，the heat - sealing arms are activated again to seal the blisters and then cut them, dividing them into individual packaging units. This design ensures that each package has good sealing and integrity.
The packaged products are smoothly transported to the designated position by an automatic conveying device. After that, through a cooling treatment, the sealing effect of the package is further stabilized, making the products safer and more reliable during subsequent storage and transportation.
The main function of the unwinding unit is to fix the plastic film and aluminum foil rolls, ensuring a stable supply of packaging materials. It is equipped with pressing, braking, and axial position adjustment devices. These devices work together to ensure that the rolls remain stable during the unwinding process without loosening or shifting. Some advanced unwinding units are also equipped with a cursor - tracking device, which can accurately position the patterns and texts on the packaging materials, improving the aesthetics and accuracy of packaging.
The heater is one of the key components of the blister packaging machine. It uses an electric heating method to quickly heat the plastic film hard sheet to a softened state for subsequent forming operations. The heating efficiency and temperature control accuracy of the heater directly affect the quality of blister forming and production efficiency.
The forming unit consists of a forming roll (plate), connecting valve plate, vacuum (compressed air) system, cooling water system, and other parts. When the plastic film sheet is heated and softened, under the action of vacuum (or compressed air), it is sucked (blown) into a smooth blister of the specified shape. The cooling water system cools the forming process to ensure the stability of the blister shape and improve the forming quality.
The function of the filling unit is to accurately fill tablets, capsules, and other products into the formed blisters. It usually uses a high - precision feeder, which can precisely control the filling amount according to the characteristics of the products and packaging requirements, ensuring that the number and weight of products in each blister meet the standards.
The heat - sealing unit is composed of an electric heating system, air pressure control, and mechanical tension devices. During the packaging process, the electric heating system quickly heats up to tightly seal the aluminum foil and the blister plastic film. The air pressure control and mechanical tension devices ensure uniform pressure and stable tension during the heat - sealing process, avoiding problems such as poor sealing and air bubbles.
The clamping and feeding device is responsible for moving the packaging materials forward. Through precise mechanical transmission, it smoothly transports the packaging materials to each process position at a set speed and pitch, ensuring the continuity and stability of the entire packaging process.
The printing device prints important information such as product batch numbers, production dates, and expiration dates on the packaged plates. It can also press tear lines for the convenience of consumers. The printing accuracy and clarity of the printing device are directly related to the traceability and ease of use of the products.
The punching unit is the last process link of the blister packaging machine. It consists of a main body, crankshaft, connecting rod, guide post, concave - convex mold, stripper (pressure) plate, and variable - frequency speed - regulation system. During the operation of the equipment, through the transmission of the crankshaft and connecting rod, the concave - convex mold punches the heat - sealed aluminum - plastic blister film, cutting it into plates of the specified size. The variable - frequency speed - regulation system can flexibly adjust the punching speed according to production needs, improving production efficiency.
The main transmission part adopts an imported main motor and reducer, which is controlled by an inverter. This configuration can not only achieve stepless speed regulation to meet the needs of different production processes but also ensure a constant output torque, ensuring the stable and reliable operation of the equipment. The power drives the rotation of gears and sprockets through a combined braking clutch and reducer and cooperates with the pneumatic actuator to complete reciprocating motion, providing power support for the entire packaging process.
The control system is the "brain" of the blister packaging machine. Currently, most use PLC or touch - screen control systems. Operators can easily set and adjust packaging parameters such as heating temperature, heat - sealing time, and packaging speed through the touch - screen. At the same time, the control system can also monitor the running status and production data of the equipment in real - time, such as the number of packages and fault alarms, realizing the automatic and intelligent control of the equipment. Once a fault occurs, the control system can quickly diagnose the problem and provide corresponding solutions, greatly improving the maintenance efficiency of the equipment.
Blister packaging machines can make the blisters firm, the plates straight and beautiful, and the packaging seal reliable. This good packaging effect can not only effectively protect products from external factors such as moisture, oxidation, and pollution but also enhance the appearance of products, increasing their competitiveness in the market.
The equipment has strong versatility and can be used to package a variety of products. Whether they are drugs such as capsules, tablets, pills, and suppositories, or solid items such as milk tablets, candies, and small hardware, and even fluid objects such as honey, chocolate sauce, and seasonings, high - efficiency packaging can be achieved. This wide range of applications makes blister packaging machines of great value in different industries.
Blister packaging machines have a high degree of automation and can realize a series of packaging processes such as automatic feeding, forming, heat - sealing, batch number printing, and punching. The automated production mode greatly reduces manual operations, not only improving production efficiency but also reducing labor costs and the impact of human factors on packaging quality, ensuring the stability and consistency of packaging quality.
Most blister packaging machines are equipped with a touch - screen operation interface. Operators can easily set and adjust packaging parameters through simple touch operations. At the same time, the equipment is also equipped with an intelligent fault - diagnosis system. Once a fault occurs, it can quickly and accurately locate the problem and provide corresponding solutions, greatly reducing the difficulty of operation and maintenance costs for operators.
Some advanced blister packaging machines have a border - less punching function. By optimizing the punching process, 4% - 6% of packaging materials can be saved. Some other devices use an interlaced blister non - strip waste cutting technology, which can further improve the utilization rate of packaging materials, achieve material savings, and reduce production costs.
In the pharmaceutical industry, blister packaging machines are commonly used equipment for drug packaging. They can ensure the safety and effectiveness of drugs during storage and transportation, preventing drugs from being affected by moisture, oxidation, and deterioration. Whether they are capsules, tablets, or oral liquids, they can be efficiently and reliably packaged by blister packaging machines, safeguarding the quality of drugs.
The health product industry also widely uses blister packaging machines. For various health products, such as vitamin tablets, calcium tablets, and fish oil capsules, blister packaging can not only protect the quality of products but also enhance the appearance and grade of products. A good packaging image helps to increase the competitiveness of health products in the market and attract the attention of consumers.
In the food industry, blister packaging machines can be used for the packaging of candies, chocolates, biscuits, and other foods. They can effectively prevent food from getting damp and deteriorating, extending the shelf life of food. At the same time, beautiful packaging can also improve the attractiveness of products and stimulate consumers' desire to buy. For example, some high - end chocolate brands use blister packaging machines for packaging to enhance the quality and market value of their products.
The cosmetics industry also cannot do without blister packaging machines. For cosmetics such as lipsticks, perfumes, and facial creams, blister packaging can play a good protective role, preventing cosmetics from being contaminated and damaged. In addition, the packaging can also enhance the grade and quality of products, meeting consumers' high requirements for the appearance and quality of cosmetics.
In conclusion, blister packaging machines, with their unique working principles, perfect structural components, diverse types, remarkable characteristics, and wide application fields, occupy an important position in the packaging industry, providing efficient and reliable solutions for product packaging in various industries.
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