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Analysis of common problems in the application of aluminum-plastic blister packaging machine_Tablet press_high speed_single punch_double layer_flower basket_multifunctional rotary tablet press
by：PHARMA
2023-04-12
There are many forms of aluminum-plastic blister packaging machines due to different manufacturers, and there are great differences in the performance level of domestic and foreign products. At present, the existing aluminum-plastic blister packaging machines can be roughly divided into the following four categories: Roller continuous aluminum-plastic blister packaging machine (this type has been phased out), plate roller continuous aluminum-plastic blister packaging machine, flat-plate intermittent aluminum-plastic blister packaging machine, flat-plate continuous aluminum-plastic blister packaging machine ( This model is not widely used).
Aluminum-plastic blister packaging machines can be distinguished according to the forming and heat-press sealing methods, and the forming is divided into roller type and flat type. The effect of flat-type positive pressure forming is better than that of drum-type vacuum forming; heat sealing is also divided into drum-type and flat-type. It is better than flat heat sealing.
According to the production experience, it is found that the aluminum-plastic blister packaging machine is prone to problems in blister forming and heat sealing during use. The following briefly introduces how to solve these problems.
1. Blister forming
According to the principle of blister forming is that the PVC film (hard sheet) is heated and passed through the mold and then formed into the required shape and size of the blister by compressed air or vacuum. Therefore, when there is a problem with the formed blister, it is necessary to start from the following aspects Solution: (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 adhered to PVC; (4) Whether the forming mold is qualified and the forming Whether the hole is smooth and the air hole is smooth; (5) Whether the cooling system of the forming mold is working 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 any abnormal loss of the pipeline; (7) Whether the compressed air for flat-type positive pressure molding is clean and dry, whether the pressure and flow can reach normal values, and whether there is any abnormal loss in the pipeline; (8) Whether the flat-type positive pressure molding mold clamps the PVC belt in parallel, whether there is Leak phenomenon.
2. Heat and pressure sealing
In the hot-press sealing process of the roller-type aluminum-plastic blister packaging, the PVC tape and the aluminum foil are hot-pressed by a roller-shaped heat-sealing roller and anilox roller that are parallel to each other under a certain temperature and pressure. Sealed. The contact between the heat-sealing roller and the anilox roller is a linear contact, and the required pressure is relatively small. In the heat sealing process of flat aluminum-plastic blister packaging, the PVC tape and the aluminum foil are heat-sealed in the same plane by a flat heat-sealing plate and a textured plate parallel to each other under a certain temperature and pressure. suitable. The contact between the heat-sealing plate and the anilox plate is planar contact, and the pressure required is relatively large. Regardless of whether it is drum type or flat type heat sealing, when the heat seal pattern is unclear and the depth of the pattern is not clear.
1. Problems such as blisters caused by the movement of the PVC belt during heat sealing need to be solved from the following aspects:
(1) Whether the aluminum foil is a qualified product, and whether the heat-sealing surface is coated with 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 to the operation of the 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) The mesh on the anilox roller (plate) (6) Whether the cooling system of the heat-sealing mold works normally and effectively; (7) Whether the pressure required for heat-sealing is normal; (8) Whether the heat-sealing roller (plate) and anilox roller (plate) ) is parallel.
3. Some state-of-the-art aluminum-plastic blister 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) The compressed air pressure is insufficient; (3) The heating temperature is insufficient; (4) The PVC film or aluminum foil is used up; (5) The packaged medicine is used up; (6) Some station machinery Overload; (7) circuit overload.
Before the following problems are solved, the machine cannot start and run:
(1) The safety shield is not completely closed; (2) The compressed air pressure is insufficient; (3) The heating temperature is not enough; (4) There is no PVC or aluminum foil film; (5) The overload or other faults have not been eliminated; The setting is wrong, the emergency stop key is not reset, etc.
In addition to the problems mentioned above, various other problems may be encountered in the actual use of the aluminum-plastic packaging machine, which requires specific analysis of specific problems. Carefully and carefully finding the cause of the problem is the key to troubleshooting and solving the problem.
Aluminum-plastic blister packaging machines can be distinguished according to the forming and heat-press sealing methods, and the forming is divided into roller type and flat type. The effect of flat-type positive pressure forming is better than that of drum-type vacuum forming; heat sealing is also divided into drum-type and flat-type. It is better than flat heat sealing.
According to the production experience, it is found that the aluminum-plastic blister packaging machine is prone to problems in blister forming and heat sealing during use. The following briefly introduces how to solve these problems.
1. Blister forming
According to the principle of blister forming is that the PVC film (hard sheet) is heated and passed through the mold and then formed into the required shape and size of the blister by compressed air or vacuum. Therefore, when there is a problem with the formed blister, it is necessary to start from the following aspects Solution: (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 adhered to PVC; (4) Whether the forming mold is qualified and the forming Whether the hole is smooth and the air hole is smooth; (5) Whether the cooling system of the forming mold is working 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 any abnormal loss of the pipeline; (7) Whether the compressed air for flat-type positive pressure molding is clean and dry, whether the pressure and flow can reach normal values, and whether there is any abnormal loss in the pipeline; (8) Whether the flat-type positive pressure molding mold clamps the PVC belt in parallel, whether there is Leak phenomenon.
2. Heat and pressure sealing
In the hot-press sealing process of the roller-type aluminum-plastic blister packaging, the PVC tape and the aluminum foil are hot-pressed by a roller-shaped heat-sealing roller and anilox roller that are parallel to each other under a certain temperature and pressure. Sealed. The contact between the heat-sealing roller and the anilox roller is a linear contact, and the required pressure is relatively small. In the heat sealing process of flat aluminum-plastic blister packaging, the PVC tape and the aluminum foil are heat-sealed in the same plane by a flat heat-sealing plate and a textured plate parallel to each other under a certain temperature and pressure. suitable. The contact between the heat-sealing plate and the anilox plate is planar contact, and the pressure required is relatively large. Regardless of whether it is drum type or flat type heat sealing, when the heat seal pattern is unclear and the depth of the pattern is not clear.
1. Problems such as blisters caused by the movement of the PVC belt during heat sealing need to be solved from the following aspects:
(1) Whether the aluminum foil is a qualified product, and whether the heat-sealing surface is coated with 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 to the operation of the 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) The mesh on the anilox roller (plate) (6) Whether the cooling system of the heat-sealing mold works normally and effectively; (7) Whether the pressure required for heat-sealing is normal; (8) Whether the heat-sealing roller (plate) and anilox roller (plate) ) is parallel.
3. Some state-of-the-art aluminum-plastic blister 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) The compressed air pressure is insufficient; (3) The heating temperature is insufficient; (4) The PVC film or aluminum foil is used up; (5) The packaged medicine is used up; (6) Some station machinery Overload; (7) circuit overload.
Before the following problems are solved, the machine cannot start and run:
(1) The safety shield is not completely closed; (2) The compressed air pressure is insufficient; (3) The heating temperature is not enough; (4) There is no PVC or aluminum foil film; (5) The overload or other faults have not been eliminated; The setting is wrong, the emergency stop key is not reset, etc.
In addition to the problems mentioned above, various other problems may be encountered in the actual use of the aluminum-plastic packaging machine, which requires specific analysis of specific problems. Carefully and carefully finding the cause of the problem is the key to troubleshooting and solving the problem.
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