Figure 1 - Blister Packing Machine
Blister packing machines find extensive use in the pharmaceutical industry for various purposes. They are capable of packaging pills, capsules, or injections with the help of these devices. Moreover,
they can handle a wide range of substances, including liquids, powders, and solids. Various packaging materials can also be utilized to pack ampoules and other objects within blister packs.
Working Mechanism Of A Blister Packing Machine:
The operational process of a blister packing machine can be divided into several important components, which are explained briefly below.
Figure 2 - Flow Chart of Working Mechanism of a Blister Packing Machine
Unwinding Station:
The first station of the machine is the unwinding station, where the forming foil is held. This station unwinds the foil as required for subsequent stages. There are two mechanisms for foil unwinding: automatic and manual.
In the automatic mechanism, a sensor continuously detects the tension of the foil. When tension is detected, it signifies the need for unwinding at a later stage. In such cases, a motor rotates and automatically unwinds the foil.
The sensor also determines the necessary quantity of foil to be unwound. Once sufficient foil has been unwound, the unwinding process is stopped. This unwinding process continues throughout the blistering process.
In the manual process, the foil is unwound by the force exerted by the machine's forming station.
Forming Station:
The foil from the unwinding station moves into the forming station, which consists of mechanical assemblies that create cavities in the foil.
These cavities take the shape of the desired tablets with the assistance of mechanical assemblies like punches.
Filling Station:
At the filling station, tablets or pharmaceutical products are placed into the cavities. A vibrator, containing the pharmaceutical products, moves the products forward in a circular motion. From the vibrator,
the products travel through a narrow chute or channel that leads to the cavities. As the vibrator vibrates and the foil moves forward, the pharmaceutical products from the vibrator are automatically deposited into the cavities through the channel or chute.
Sealing Station:
In the sealing station, the upper foil seals the lower foil. A heating element is used to seal the foil, and the temperature of the heating element is adjusted based on the characteristics of the foil and the product being packed.
Cutting Station:
At the cutting station, a blister of the appropriate size is cut using mechanical assemblies like a cutter jaw, with the sealed foil positioned in between.
When the sealed foil is correctly aligned between the jaws, they are activated, resulting in the cutting of blisters of the desired sizes.
Types of a Blister Packing Machine:
Blister Packaging Machines can be categorized according to two main factors.
1.Machine Structure
2.Packaging Material used by the Machine
Machine Structure
Machine structure means arranging the blister machine’s main parts, such as Forming and Sealing Station. Commonly, blister machines can be categorized into three types according to the machine structure.
1.Roller Type or Rotary Type
2.Plate Type
3.Roller Plate Type
1.Roller Type or Rotary Blister Machine
The blister’s forming station and heating station are circular in the roller-type blister machine. They continuously move in a rotary direction during machine operation.
Packaging material continuously passes over the circular-shaped forming station as it constantly rotates. At the same time, it creates pockets in the packaging material.
Similarly, the sealing station is also circular and continuously rotates. Filled cavities with the upper packaging material pass between the station assemblies.
The packaged material is sealed in a rotatory position. Since both stations continuously rotates during their operation, they consume less heat and have less heating efficiency.
Additionally, they have high speed and result in increased output efficiency.
The rotary-type blister machine suits small to mid-sized products such as tablets and capsules.
2.Plate-type Blister Machine
In plate-type machines, heating and sealing stations are plate-shaped and have linear, intermittent motion during machine operation.
Packaging material is placed over the forming station during forwarding motion through different mechanical components. Initially, the packaging material is aligned with cavity-forming assemblies.
Then forming station activates to create cavities of desired size and shape. Similarly, packaging material filled with product and wrapped in the upper material is placed on the heating station.
The machine stops to align the packaging material with the heating station. Finally, the upper portion of the heating station lowers itself to seal the packaging material. During the machine operation, motion is not continuous.
Machine advances and stops to carry out all the related functions such as forming, filling and cutting.
Packaging Material Used
Another method to categorize Blister packaging machines is using Packaging material for packing purposes. Commonly, there are two types of packaging material for pharma product packaging – Aluminum and PVC.
Aluminum and PVC are used in two different combinations, and their combination defines the category of the blister packaging machine.
1.ALU – ALU Machine
In ALU – ALU machine, the Aluminum foil is used as a forming foil, in which cavities for inserting tablets are formed. Aluminum foil is used as a lidding or upper foil to seal the blister.
2.ALU – PVC Machine
In ALU – PVC type, Aluminum is used as forming foil to create cavities for tablets, and PVC is used as a lidding foil to seal the blisters.
3.PVC – PVC Machine
In PVC-PVC type, PVC is used as a forming foil to create cavities for pharma products. These types require a high temperature to soften the PVC, and a vacuum is used to create the cavities.
PVC is also used to seal the packed pharma products for lidding foil.
Why ZONELINK!
We at ZONELINK, due to our immense experience of 21 years of being pharmaceutical machines manufacturers, understand and realize the requirements of our customers.
Our ZONELINK Blister Packing Machine possesses several key features to ensure optimal production. Firstly, it offers both automatic and manual modes for producing and sealing blisters, providing flexibility in operation. Secondly,
it is equipped with features suitable for medium-sized batches and high-speed operation, ensuring efficient performance. Additionally, the ZONELINK blister packing machine has the capability to preprint the material for each package's lid,
along with a print registration mechanism to precisely position the sealing material within the blister cavity. Furthermore, the machine is capable of embossing sealed packages.
Our experts from technical teams understand these criterions and guarantee that costumers are provided with the best. In addition,
our ZONELINK machine is designed to accommodate different project timetables and capable of producing smaller batches.
Moreover, it can seamlessly integrate with both upstream and downstream machinery.
By guaranteeing these requirements, the blister packaging machine from ZONELINK can effectively fulfill your manufacturing needs and contribute to an increase in your profit margin.