The Fully Automatic Aluminum-Plastic Blister Packaging Machine Process Introduction

The fully automatic aluminum-plastic blister packaging machine is designed based on the core process of "thermoforming-filling-heat sealing-cutting". It integrates multiple modules such as mechanical transmission, pneumatic control, electrical control system, and heating system. While its structure is complex, its operating logic is clear, and its core lies in the accurate connection and automated control of each process.

(I) Core Structural Components

The equipment mainly consists of a feeding system, forming system, filling system, heat sealing system, printing system, cutting system, waste recycling system, and electrical control system.

• The sheet feeding system is responsible for conveying plastic sheets at a uniform speed to the forming area, equipped with a correction device to ensure accurate sheet delivery.
• The forming system includes a heating plate and forming molds. The plastic sheets are heated to a softened state via thermal radiation, and then pressed into blister packs by pneumatic or hydraulic pressure, with simultaneous cooling and shaping.
• The filling system accurately feeds material into the blister packs using vibration feeding, suction, or pusher-type structures, equipped with a detection device to prevent missed filling.
• The heat-sealing system aligns and adheres the aluminum foil to the plastic blister packs, achieving heat sealing through a temperature-controlled heating plate and pressure device, ensuring a tight seal.
• The printing system can print batch numbers, production dates, and other information on the aluminum foil surface.
• The die-cutting system uses specialized molds to cut continuous packaging sheets into individual finished products.
• The waste recycling system automatically collects waste materials after die-cutting, improving material utilization.
• Parameter setting, process monitoring, and fault alarms are achieved through a PLC controller and touch screen, ensuring stable equipment operation.

(II) Working Principle

During operation, the operator first installs the appropriate forming and punching dies according to the product specifications, and sets parameters such as heating temperature, forming pressure, heat sealing time, and conveying speed. After the equipment starts, the feeding system uniformly feeds the plastic sheet to the forming system. The heating plate heats the plastic sheet to a softening temperature, and the forming die, under air pressure, presses the plastic sheet into a blister pack of the preset shape. The cooling device rapidly cools the blister pack to set its shape. Subsequently, the plastic sheet carrying the blister pack continues to be conveyed to the filling area. The filling system evenly and accurately feeds the material into each blister pack. The detection device simultaneously checks for missing products, and unqualified products are rejected by subsequent mechanisms. Next, the aluminum foil is aligned and bonded to the plastic sheet blister pack via the foil feeding device and enters the heat sealing system. The heating plate heat seals the aluminum foil and plastic sheet under the set temperature and pressure, ensuring a tight seal. Afterward, the printing system prints necessary information on the aluminum foil surface, and the punching system punches the continuous packaging sheets into individual finished products. The scrap is automatically collected by the recycling system. The entire process operates continuously, achieving fully automated packaging from raw materials to finished products. The electronic control system monitors the operational status of each stage in real time, immediately alarming and shutting down the machine in case of any abnormality, ensuring production safety and packaging quality.

(III) Precautions

Fully automatic aluminum-plastic blister packaging machines have complex structures and high value. Proper use and maintenance directly affect packaging quality, equipment lifespan, and production safety. The following points should be emphasized:

1. Proper mold installation: Ensure accurate positioning and secure fixing when installing forming and punching molds to prevent mold loosening during operation, which could lead to packaging deformation or equipment damage. After replacing molds, test operation to confirm compliance.
2. Reasonable parameter settings: Set heating temperature, heat sealing pressure, and time according to the packaging material and product specifications to avoid excessive temperature causing scorching of the plastic sheets or damage to the aluminum foil, or insufficient pressure leading to poor sealing.
3. Daily cleaning and maintenance: After production, promptly clean residual materials and stains from the forming molds, filling mechanism, and heat sealing plate. Regularly wipe the equipment surface to keep it clean.
4. Regular inspection and maintenance: Regularly check the wear and operating condition of components such as heating elements, drive belts, air pressure pipelines, and molds. Replace aging parts promptly and add lubricating oil to ensure smooth transmission.
5. Operators must be professionally trained and strictly follow operating procedures. When the equipment is running, it is forbidden to touch moving parts or high-temperature areas. Safety protection devices should be checked regularly to ensure they are in good working order.