3 Things You Can’t Miss About Blister Packing Machine

The blister packing machine is a machine that forms a blister with a transparent plastic film or sheet, and seals the product between the blister and the bottom plate by heat sealing, gluing, etc.First of all, you should have a simple understanding of the types of blister packing machine.

Do you know what kinds of blister packing machine are mainly divided into? Or do you understand how each of them works?

Working Principle and Technological Process

Roller Blister Packing Machine

The working principle of the roller blister packing machine: the forming film is heated and softened by the heating device, and the blister is sucked out by vacuum negative pressure on the roller forming die roll.

The heat sealing device seals the cover film coated with adhesive on one side on the surface of the blister material under suitable temperature and pressure, and seals the packaged material in the blister.

Then, the batch number is printed by the typing and embossing device and the breaking line is pressed out, and finally, the punching device cuts the product plate into a specified size

Flat Blister Packaging Machine

The working principle of the flat blister packing machine: the forming film is heated and softened by the flat heating device, the softened film is blown into a blister by compressed air in the flat forming device, and the filling device fills the packaged material into the blister.

Then it is sent to the flat sealing device, and the cover film is sealed with the forming film under the appropriate temperature and pressure, and then the batch number and the breaking line are printed by the printing and imprinting device, and finally the punching device is punched into the specified size.

Roller Plate Blister Packing Machine

The roller plate type blister packing machine is developed on the basis of the roller type and flat type blister packaging machine. The working principle is basically the same as the above two.

Operations of the Blister Packing Machine

When you own a blister packing machine, the most important step is to learn how to operate the machine. If you can't even master the basics, then the giant machine is just a useless, space-taking decoration.

Step 1: Prepare medicines and packaging materials, replace batch templates, install PVC and aluminum foil, check cooling water, and clean equipment carefully.

Step 2: Turn on the power switch, switch on the compressed air.

Step 3: Press the heat button, and adjust the heating and heat sealing temperature control meter to the appropriate temperature.

Step 4: Pull the PVC hard sheet through the channel to the punch cutter, and the aluminum foil to the heat sealing plate.

Step 5: When the heating plate and heat sealing plate rise to the appropriate temperature, adjust the cooling temperature meter to the appropriate temperature (generally 30℃).

Step 6: When the drug is covered with the whole blanking track, press the green button of the motor to run empty. When the foaming, heat sealing and blanking meet the requirements, press the vibration button of the pill bucket and the planetary cloth switch.

Step 7: Adjust the feeding so that the feeding meets the requirements, and then carry out normal packaging.

Step 8: After packing, shut down the machine in the following order: press the shutdown button of the pill bucket -- press the red button of the motor -- the main engine stops -- close the main power switch -- close the inlet valve -- close the inlet valve. Then clean up the machine and the site, and maintain the packaging equipment.

The most common problems of blister packing machine

Changes in material thickness

This may affect the integrity of the blister packing machine packaging, thus forming a complete barrier around different products. In addition, the quality of the material may lead to changes in the thickness of the material; You can solve this problem by considering uniform material thickness and programming the machine appropriately.

Lack of products in the cavity

This may be the result of faulty parts in the blister packing machine or high speed filling of parts into the cavity. You can solve this problem by fixing the damaged part (such as the steering roller) to properly fill the cavity. You should also adjust the speed of the steering wheel from the control panel.

Improper sealing

This may cause the seal ring to peel off the PVC. The main causes of this problem are insufficient heating and pressure. You can classify by fixed heating system and pneumatic system. You will also properly control the pneumatic and heating mechanisms from the control panel.

Blister Forming

According to the principle that blister forming is PVC hard sheet heated through the mold and formed by compressed air into the desired shape and size of blister, when the blister forming problems need to be solved from the following aspects.

If the individual blister molding is not full or molding blister rupture needs to check the following aspects:

First, check whether the PVC sheet is qualified or has air holes.

Second, whether the surface of the forming mold is clean without foreign matter, whether the forming hole is smooth, whether the air hole is unobstructed.

Third, whether there are burrs and other foreign bodies on the surface of the heating device to scratch the heated PVC or adhesion PVC

Fourth, whether there is a gap between the upper and lower heating plates.

If there is a whole row or regular one or more columns of bubble hood forming, the forming part is full, it needs to be checked from the following aspects:

First, whether the heating temperature degree reaches the set value before forming.

Second, before forming, the heating plate is not parallel to the forming mold or the distance between the heating plate and forming mold exceeds the plate blister distance.

Third, the heated PVC runs against the lower mold, resulting in cold contraction of PVC;

Fourth, the forming upper and lower heating plates are not parallel to each other, resulting in uneven heating at one end.

Fifth, whether the compressed air formed by positive pressing is clean and dry, whether the pressure is lower than 0.4mpa during operation, and whether the pipeline has abnormal loss;

Sixth, the pressure of the plate positive pressing molding mold is insufficient or the PVC belt is not clamped in parallel to check whether there is air leakage phenomenon;

With the rapid development of medicine and other industries, blister packaging machine will also usher in a broader development in the future.

I believe that if you are willing to take the time to understand the above three things about the blister packaging machine more thoroughly, it will definitely save you a lot of trouble in future production.