Detailed Interpretation Of Common Problems Of Aluminum Plastic Blister Machine (II)

2. Hot press sealing

In the process of hot press sealing of roller aluminum plastic blister packaging, PVC tape and aluminum foil are meshed and rolled by roller heat sealing rollers and anilox rollers parallel to each other at a certain temperature and pressure. The contact between heat sealing roller and anilox roller is linear contact, and the necessary pressure is absolutely small.

In the hot press sealing process of flat aluminum plastic blister packaging, PVC tape and aluminum foil are sealed by flat heat sealing plates and chequered plates in a unified three-dimensional under certain temperature and pressure. The contact between heat sealing plate and chequered plate is surface contact, and the necessary pressure is absolutely large.

Whether it is roller type or flat plate type hot pressing sealing, when there are problems such as unclear heat sealing mesh, different mesh depth, and blister formation caused by PVC belt displacement during thermal stress, it must be handled from the following aspects:

(1) Whether the aluminum foil is a qualified product and whether the hot sealing surface is coated with hot-melt adhesive meeting the requirements;

(2) Whether the temperature of heating equipment is too high or too low;

(3) Whether the operation of PVC tape or aluminum foil has abnormal resistance;

(4) Whether the heat sealing die is qualified, whether the appearance is flat and lubricated, and whether the blister formed on the PVC belt can be smoothly sleeved into the hole of the driving roll;

(5) Whether the anilox lines on the anilox roller (plate) are clear and consistent in depth;

(6) Whether the cooling system of heat sealing die works normally and effectively;

(7) Whether the pressure required for heat sealing is normal, which is abnormal if it is lower than 0.4MPa;

(8) The thermal active (plate) and anilox roller (plate) are not parallel.

3. Other issues

1. The full servo controlled aluminum-plastic blister packaging machine is equipped with various active monitoring equipment, which can play various maintenance purposes, and actively stop the operation of the machine when the following problems are found:

(1) The safety protection cover is opened or not in place;

(2) When the compressed air pressure is lower than 0.4MPa;

(3) When the heating temperature of each station is lower than or higher than the setting range;

(4) PVC hard sheet or aluminum foil is used up;

(5) The packaged drugs are used up;

(6) Mechanical overload of some stations;

(7) Electrical load;

(8) The temperature of cooling water system is too high;

(9) Equipment operating pressure overload or electric path load fault alarm;

2. Poor blanking of high-speed feeder

(1) The appearance of the drug contains powder with high viscosity or the drug is too wet to cause astringency and high viscosity;

(2) The drug is light (less than 300mg), which affects the blanking speed;

(3) The mold is not aligned with the blister hole;

(4) The blanking plate is too high;

(5) Insufficient brightness of leakage plate and blanking plate;