There are many forms of aluminum-plastic packaging machines due to different manufacturers, and there are also great differences in product performance levels. At present, the existing aluminum-plastic packaging machines can be roughly divided into the following four categories: Roller continuous aluminum-plastic packaging Machine (this model has been phased out), plate-roll continuous aluminum-plastic blister packaging machine, flat-plate intermittent aluminum-plastic blister packaging machine, flat-plate continuous aluminum-plastic blister packaging machine (this type of model has not been widely used) .
Aluminum-plastic packaging machines can be distinguished by forming and hot-pressing sealing methods. The forming is divided into roller type and flat plate type. The flat positive pressure forming effect is better than the roller vacuum forming; the heat sealing is also divided into roller type and flat plate type hot pressing sealing effect is better than the roller type hot pressing sealing, and the roller type hot pressing sealing is in speed, reliability, etc. It is better than flat-plate hot-press sealing.
The aluminum-plastic packaging machine is prone to problems in blister forming, hot-press sealing, etc. how to solve it：
1. Blister forming
According to the principle that the blister molding is a PVC film (hard sheet) heated through a mold and compressed air or vacuum formed into the required shape and size of the blister, so when there is a problem with the molded blister, you need to start from the following aspects solve:
(1) Whether the PVC film (hard film) is a qualified product;
(2) Whether the temperature of the heating device is too high or too low;
(3) Whether the surface of the heating device is stuck with PVC;
(4) Whether the molding die is qualified, whether the molding hole is smooth, and whether the air hole is unobstructed;
(5) Whether the cooling system of the forming mold works normally and effectively;
(6) Whether the vacuum degree and exhaust rate of the roller negative pressure forming can reach the normal value, and whether there is abnormal loss of the pipeline;
(7) Whether the compressed air of flat positive pressure molding is clean and dry, whether the pressure and flow can reach the normal value, and whether there is abnormal loss in the pipeline;
(8) Whether the flat positive pressure forming mold clamps the PVC belt in parallel, and whether there is air leakage.
2. Hot press sealing
In the process of hot-pressing and sealing of the roller-type aluminum-plastic blister packaging, the PVC tape and the aluminum foil are heat-pressed by the parallel roller-shaped heat-sealing roller and the anilox roller under a certain temperature and pressure. Sealed. The contact between the heat sealing roller and the anilox roller is linear, and the required pressure is relatively small.
In the hot-press sealing process of the flat-plate aluminum-plastic blister packaging, the PVC tape and the aluminum foil are heat-sealed by parallel flat heat-sealing plates and anilox plates in the same plane under a certain temperature and pressure. Fit. The contact between the heat-sealing plate and the anilox plate is surface contact, and the required pressure is relatively large.
Regardless of roller or flat plate type hot-pressing, when there are problems such as unclear heat-sealing netting, different netting depths, and foaming caused by the running of the PVC tape during heat sealing, the following aspects need to be solved:
(1) Whether the aluminum foil is a qualified product, and whether the heat-sealing surface is coated with a hot melt that meets the requirements;
(2) Whether the temperature of the heating device is too high or too low;
(3) Whether there is abnormal resistance in the operation of PVC tape or aluminum foil;
(4) Whether the heat-sealing mold is qualified, whether the surface is flat and smooth, and whether the blister formed on the PVC tape can be smoothly inserted into the hole of the heat-sealing roller (plate);
(5) Whether the texture on the anilox roller (plate) is clear and consistent in depth;
(6) Whether the cooling system of the heat-sealing mold is working properly and effectively;
(7) Whether the pressure required for heat sealing is normal;
(8) Whether the heat sealing roller (plate) and the anilox roller (plate) are parallel.
3. Some technologically advanced aluminum-plastic packaging machines are equipped with various automatic monitoring devices, which can play various protective functions and automatically stop the operation of the machine when the following problems are found:
(1) The safety shield is opened;
(2) Insufficient compressed air pressure;
(3) The heating temperature is not enough;
(4) PVC film or aluminum foil is used up;
(5) The packaged medicines are used up;
(6) Mechanical overload at certain workstations;
(7) The circuit is overloaded.
4. The machine cannot be started and run until the following problems are not solved:
(1) The safety shield is not completely closed;
(2) Insufficient compressed air pressure;
(3) The heating temperature is not enough;
(4) Lack of PVC or aluminum foil film;
(5) Overload or other faults have not been eliminated;
(6) The setting of the function keys is wrong, the emergency stop key is not reset, etc.
