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Barrier Technology

In the pharmaceutical sector the need to protect the product from contamination due to the presence of personnel or the environment is one of the major drivers for containment. What matters most in aseptic processes is the max. reduction of contamination risk.

Open RABS

RABS means Reduced Access Barrier System, it is a rigid protection made of transparent walls (polycarbonate or glass), equipped with an adequate number of glove flanges and gloves. It is installed on top of the filling and/or capping machines, separating them from the surrounding area.
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Closed RABS

Closed RABS is similar to an Active RABS (that includes the ventilation system) where the air is not exhausted into the production room but is recycled and/or exhausted via a controlled and well defined channel.
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Isolators

An isolation system is a fully closed enclosure, equipped with a dedicated air circuit, where machines can be segregated. It is normally made of a stainless steel 316L structure. All windows are made of tempered glass, all inner walls are provided with rounded corners and there are no crevices in order to allow an easy and useful cleaning.
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Operation Cost Savings

The use of Isolation Technology allows the installation of a vial/syringe filling line for aseptic products in a production area classified as Class C, instead of a Class B that is requires when an Open RABS or a Closed RABS is used.
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IsoTech Lab • In-House Isolator Research & Development Laboratory

IMA Life In-house Isolator Research & Development Laboratory is a pharmaceutically compliant lab hosting an infeed Rotary Table and a Filling & Stoppering machine under isolator to specifically carry out tests and ultimately demo runs.
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Isolation Technology and Engineered HVAC

A filling line for aseptic products in isolation technology offers a wide number of advantages with respect to a similar line installed in a conventional clean-room or with an open RABS. We can summarize these benefits in the following topics: increased product safety (that results in an increased product quality)higher operator protection (in case of toxic product) production area in class C or D, instead of class A or B possibility to frequently perform cleaning and sterilization cycles.
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Vaccine manufacturing lines from a single source.

The COVID-19 pandemic is far from over, and the threat of future pandemics created by novel viruses is very real.
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Open RABS

RABS means Reduced Access Barrier System, it is a rigid protection made of transparent walls (polycarbonate or glass), equipped with an adequate number of glove flanges and gloves. It is installed on top of the filling and/or capping machines, separating them from the surrounding area.

Gloves must be positioned in order to allow the operator to perform all operations inside the machine, such as cleaning, caps/stoppers loading, vials removal, etc. so that these can be performed by operators without opening the protection walls.

The RABS can be PASSIVE or ACTIVE type.

PASSIVE means that it is NOT equipped with a dedicated air system, in that case the air flow inside the RABS should be generated externally, normally the Laminar Flow required in the filling and capping area is generated by fans and filters embedded in the false ceiling of the production room.

Both are considered OPEN because the air used for the laminar Flow is exhausted into the production room, without any control or filtration.

ACTIVE means that it is equipped with an independent air ventilation system, in that case the Laminar Flow required in the filling and capping area is generated by fans and filters that are parts of the RABS itself, then the air flow is partially independent by the air flow of the production room.
In both cases the area inside the RABS must be “A” class, and the surrounding area must be classifies as “B”.

 

Open RABS are useful to increase product protection, but they are not useful with toxic products, since they cannot offer any type of protection for the operator and the environment.

Advantages:

  • Easy to install, also on existing machines
  • Inexpensive
  • Easy to validate (air flow, air classification, doors interlocks)
  • Possibility to downgrade the production area to class B

Weaknesses:

  • Surrounding production area must be class B (with an Isolator it can be downgraded to the less expensive class C)
  • No operator protection, not useful with toxic products
  • Humidity and temperature inside the O-RABS is dependent by the production room conditions
  • There is no possibility to recycle the air used inside, saving HVAC energy consumption
  • No possibility to perform WIP cycles (Wash In Place)
  • No possibility to perform automatic decontamination cycles (for example with Vaporised Hydrogen Peroxide)
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Closed RABS

It is similar to an Active RABS (that includes the ventilation system) where the air is not exhausted into the production room but is recycled and/or exhausted via a controlled and well defined channel.

Considering that the system controls the full air flow (inlet and outlet) it allows a correct pressure control inside the system and it is suitable to be used with slightly toxic products.

Normally the classification of the air leak tightness of these systems is not carried out using the ISO 10648-2 standard, which is usually applied for isolators, since different solutions, with very different prices, are available on the market.

Due to the lack of leak tight certification these systems cannot not be used for highly toxic products.
Also these systems must assure a class A environment, the surrounding must be classified as B.

 

Advantages:

  • Easy to install, also on existing machines
  • Easy to validate (air flow, air classification, doors interlocks)
  • Possibility to downgrade the production area to class B
  • Humidity and temperature inside the Closed RABS can be controlled adopting a dedicated HVAC
  • Possibility to recycle the air used inside, saving HVAC energy consumption

Weaknesses:

  • Surrounding production area must be class B (with an Isolator it can be downgraded to the less expensive class C)
  • Limited operator protection, not useful with highly toxic products
  • No possibility to perform WIP cycles (Wash In Place)
  • No possibility to perform automatic decontamination cycles (for example with Vaporised Hydrogen Peroxide)
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Isolators

This is the state-of the-arte technology. It is a fully closed enclosure, equipped with a dedicated air circuit, where machines can be segregated.
It’s normally made of a stainless steel 316L structure, all windows are made of tempered glass, all inner walls are provided with rounded corners and there are no crevices in order to allow an easy and useful cleaning.

The classification of the air leak tightness of these systems is carried out following ISO 10648-2 standard, these tests give a real value of the system leakage, the achieved value will help to decide if we can use it with highly toxic products or not.

Using an international standard the comparison between different products become much more easy and serious. 

Due to its leak free and easy to clean structure, the isolator can be cleaned with semiautomatic cycles (WIP) very useful to remove traces of contaminating products and can be decontaminated using agents in vapour phase as the Vaporized Hydrogen Peroxide, with fully automatic cycles.

 

Internally the isolator must assure a class A environment, due to its leak tight structure the surrounding production room can be classified as class C.

Complete vials/syringes filling lines for aseptic and/or toxic products are installed in several countries world-wide.

After a difficult start, they are day by day more accepted and EMEA and FDA  are strongly suggesting the adoption of Isolators in any new production plant for aseptic products.

The advantages that they are offering in term of quality of the final product and in term of cost saving are absolutely demonstrated.

Also while the Isolator increases the complexity of the overall project, the selection of a supplier that can supply all the filling line as a “single source” can help to decrease engineering and validation costs, providing a standardized automation system and a centralized data collection.

 

 

 

Advantages:

  • Highest product protection
  • Possibility to downgrade the production area to class C
  • Humidity and temperature inside the Isolator can be controlled adopting a dedicated HVAC
  • Possibility to recycle the air used inside, saving HVAC energy consumption
  • Full operator protection, useful with highly toxic products
  • Possibility to perform WIP cycles (Wash In Place)
  • Possibility to perform automatic decontamination cycles (for example with Vaporised Hydrogen Peroxide
  • Enhanced automation, fully integration isolator-machine
  • Cost saving (do to the downgrade of the surrounding production area from class B to C)

Weaknesses:

  • It cannot be installed on existing machines, no upgrades posssible
  • Higher purchase cost
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Operation Cost Savings

As described before the use of Isolation Technology allows the installation of a vial/syringe filling line for aseptic products in a production area classified as Class C, instead of a Class B that is requires when a Open RABS or a Closed RABS is used.

The downgrade of the classification of the production room allows the following Operation Cost savings:

  • Less quantity of air required by the production room
  • Less air sampling (particulate and microbiological)
  • Less time spent by operators to enter/exit the classified room
  • Less expensive gowning

In order to understand the saving generated by the reduction of the amount of air required by the production room.

This is a typical filling line composed by:

  • Accumulation table
  • Filling and stoppering
  • Nr.2 Freeze Dryer loading systems
  • Capping

If the line is installed in a conventional clean room (all class A), with this configuration it will requires: 68m2 of Class A (with unidirectional air flow)

 

 

The same filling line installed with Open or Closed RABS will requires Unidirectional air flow inside the RABS + 50cm of open unidirectional flow at the operator side.
With this configuration we need 20,6 m2 of class A (with unidirectional air flow) + 20,4 m2 of external unidirectional air flow (total 41m2) and 27 m2 of class B.

The same filling line installed with Isolator will requires Unidirectional air flow inside the Isolator ONLY.
With this configuration we need 20,6 m2 of class A (with unidirectional air flow) and 47,2 m2 of class C.

Comparing different installations of the same filling line, the results are:

  • The adoption of an Open or Closed RABS will allow to reduce the AIR Handling costs of approx 35%, compared with an installation in conventional clean room.
  • The adoption of an Isolator will allow to reduce the AIR Handling costs of approx 64%, compared with an installation in conventional clean room.
  • The adoption of an Isolator will allow to reduce the AIR Handling costs of approx 45%, compared with an installation with Open or Closed RABS.

 These calculations do not take into consideration the possibility to re-circulate the air. This possibility is available for all the three configuration, but with higher efficiency with Isolator technology, due to its leak-free structure.

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IsoTech Lab • In-House Isolator Research & Development Laboratory

MA Life In-house Isolator Research & Development Laboratory is a pharmaceutically compliant lab hosting an infeed Rotary Table and a Filling & Stoppering machine under isolator to specifically carry out tests and ultimately demo runs. A microbiologist staff works aside our engineers to improve the isolator HVAC systems as well as to determine even shorter and well suited H2O2 cycle times for our equipment. Cooperation agreements have been settled with scientists and experts on the field to support the pragmatic and industrial approach.

IMA Life Research & Development Lab for Isolators has two main objectives:

1)    To perform internal researches:

  • To optimize VHP cycles;
  • To check the performance of electro mechanical components of the HVAC circuits;
  • To make comparisons between VHP generators and other sanitization media;
  • To check material compatibility and resistance to decontamination agents.

2)    To set-up activities in conjunction with Customers:

  • To check cycle times with agreed isolator loadings;
  • To perform preliminary training sessions for Customer isolator management and VHP development cycles.
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Isolation Technology and Engineered HVAC

A filling line for aseptic products in isolation technology offers a wide number of advantages with respect to a similar line installed in a conventional clean-room or with an open RABS.

We can summarize these benefits in the following topics:

  • increased product safety (that results in an increased product quality)
  •  higher operator protection (in case of toxic product)
  • production area in class C or D, instead of class A or B
  • possibility to frequently perform cleaning and sterilization cycles…

…but it is time to deeply analyze the advantages of the engineered air flow supplied within an Isolator for a filling machine.

 

IMA Life isolators for filling lines are equipped with a sophisticated air flow circuit that can be subdivided in three main sections:

  • re-circulated air flow to create the unidirectional air flow (UAF)
  • “make-up” air flow, to ensure an adequate amount of “new” air in the loop
  • extraction air flow, to have a fine pressure adjustment inside each isolator chamber.

These air flow systems allow a drastic cost reduction related to the HVAC handling costs, recycling up to 90% of the air needed by the system, just adding what is required to avoid the temperature drift due to thermal dissipation of the fans and the friction of the filters.

An Example

A filling machine 2 meters wide and 1 meter deep, that needs an unidirectional air flow (UAF) all over its surface, needs 3.240 m3 of air per hour.(2m x 1m x 0,45m/s x 3600s= 3.240 m3/h).

This is the total amount of air handled by the circuit “a”.

It is a closed loop composed by inlet fans and inlet filters (HEPA H14) in charge of the generation of the unidirectional air flow (UAF) inside the isolator. At the bottom of each isolator section, all the air is extracted by the fans in charge of the recirculation, and re-introduced in the isolator chamber via the filtration stage.

In case a toxic product is manipulated, the extracted air is filtered with HEPA H14 filters before the re-circulating fans. These exhaust filters are installed in a special container that allows a safe replacement procedure called bag-in/bag-out (BIBO).

The Isolator control unit (PLC) receives a continuous information by the anemometers installed in each isolator section, and drives the fan speeds in order to achieve a stable air speed of 0.45m/s (± 20%). In that case each chamber results independent and the air speed finely controlled.

If we re-circulate 90% of this air, we just need to supply 324 m3 of “new conditioned air” per hour. In some defined applications also this air can be re-circulated through the same HVAC system that was generating this flow . See circuit “b”.

 

It is a good practice to install a centralized HVAC system equipped with a 3-stage filtration with increasing efficiency G4, F9 and finally H14. Supplying well filtered and conditioned air to the isolator will increase the life of the filters in charge of the unidirectional air flow (LAF) generation, decreasing the interventions in classified areas to replace the filters on board of the isolators and therefore costs.

This small amount of air (10 to 20% of the total air needed) can be exhausted or recycled through the HVAC. The choice depends on many factors such as: presence of solvents in the products, external temperature, external humidity, etc.

Also the extraction unit, in charge of the extraction of the portion of air to be re-conditioned, should be equipped with HEPA H14 filters in order to prevent any contamination of the HVAC and of the environment in case this portion of air will be exhausted in the environment.

The circuit “c” is in charge of the “fine pressure control”. Big HVACs have a high response time when a modification in the air flow (pressure, speed, etc.) is required, due to its size and related inertia. 
Through this extraction pipe, the main control system is able to ensure a very fast and precise pressure control for each single section.
The isolator control system receives a continuous information by the pressure gauge installed in each isolator section, and drives the exhaust fan speeds in order to achieve the required pressure value.

 

In that case, each chamber results independent and the pressure inside the chamber finely controlled.

Typically, when an aseptic nontoxic product is manipulated, the pressure inside the isolator chambers should be higher than the external surrounding (+50/75 Pa).

If the product is toxic but not aseptic, the pressure inside the isolator chambers should be lower than the external surrounding (-50/75 Pa).

Many of the new generation anti-cancer products are aseptic and toxic, in this case the pressure inside the isolator chambers is suggested to be slightly higher than the external surrounding (+20/30 Pa).

Isolators should be routinely leak checked, applying a test procedure in according with the ISO 10648-2. If the system must be decontaminated with VHP (Vaporized Hydrogen Peroxide) the leak check routine becomes a compulsory step prior to sterilization. 

Conclusions:
A modern isolated filling line should be supplied with its dedicated HVAC system.
A well-engineered project that integrates a sophisticated air flow circuit and pharmaceutical grade HVAC systems will increase the performances of your installation, focusing in the following topics:

  • increased pressure control precision
  • increased air speed control precision
  • increased air quality…
  • …decreasing HVAC costs.
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Vaccine manufacturing lines from a single source.

The universal impact of the disease, the uncertain circumstances and the urgent search for effective vaccines constitute a significant challenge for the pharmaceutical sector.
There is a growing need to supply a global market with innovative medicines at a profitable cost. So pharmaceutical equipment manufacturers have to react quickly, while maintaining due levels of diligence and social responsibility.
To meet this demand, we at IMA Group operate in highly specialised pharmaceutical divisions, focusing on specific processing and packaging areas, in order to provide our customers real added value based on two main criteria. Firstly, the ability to design and supply equipment and advanced technology that is versatile and can be adapted for new products. Secondly, insider knowledge of manufacturing processes and equipment applications, which enables us to actively collaborate with the end user in the optimisation of processes and the joint development of new ideas. The design of innovative, safe, automated high-speed lines for the processing of injectable products (such as vaccines, oncology drugs and so on) requires great flexibility in order to offer highly customised solutions. Thanks to its extensive portfolio, IMA can support the pharmaceutical industry with complete high-speed lines for vaccines including primary and secondary packaging solutions.

Primary packaging for vaccines

IMA Life (Aseptic Processing & Freeze-Drying Solutions) is one of the three pharmaceutical divisions of IMA Group, world leader in the design and manufacture of complete aseptic lines for parenteral products from the initial washing of the bottles, through depyrogenation, filling, capping, and decontamination, up to and including secondary packaging. All this with or without freeze-drying systems and, in the section where the product is exposed, the use of an isolator or other containment solutions.
IMA LIFE aseptic filling lines are intended for applications requiring the most scientifically and technologically advanced equipment, where the industry is obliged to comply with very strict standards (GMP – Good Manufacturing Practice). Since vaccines come in either liquid or lyophilized powder form, our comprehensive product range means that IMA Life can process both liquid and lyo products.
At IMA Life, we have learned to design solutions alongside our customers, providing tailored responses to each and every request from the aseptic, biopharmaceutical and pharmaceutical markets.
Our aseptic high-speed processing lines feature cutting-edge robotics and fully integrated isolation technologies, ensuring line performance of 400 to 600 units per minute. Designed around a modular concept, they ensure great flexibility, production efficiency and product quality, which can be achieved in the safest way possible and to tighter schedules. Perfect for the production of vaccines.
Six different production sites located in Italy, the USA and China, each one specialised in a specific step of the process, ensure a technologically advanced product portfolio. Each solution makes use of consolidated technology and is the result of not only more than 60 years’ experience, but also ongoing partnerships and large-scale projects, developed and managed with leading international pharmaceutical companies.

Secondary packaging for vaccines

IMA Safe is the IMA Group division that specialises in secondary packaging with deep-draw thermoformers, paper tray packaging machines, horizontal and vertical cartoners, as well as complete end-of-line solutions made by BFB.
Cartoners are designed to run efficiently, reliably and with fast changeover times, ensuring easy synchronisation with both upstream and downstream machines, thus establishing the link between primary and secondary packaging. 

Both machines and feeding units are extremely flexible, enabling several types of products and packs to be processed. They can handle a wide range of very delicate and fragile products such as ampoules, vials, syringes and many others, thanks to the use of robotic systems applied to the most critical areas like product feeding and connection from the upstream machine to the cartoner.
IMA Safe is able to supply the most advanced solutions for handling vaccines, not only from single to multiple vial feeders inside a tray, but also multi-product trays. Constant research and innovation have made it possible to develop optional devices and other ancillary equipment applications such pre-filled syringes, swabs, needles or cannula feeders, to name just a few, and to supply customised packaging solutions. Sustainability in packaging is a topical issue, and in response to increasing concerns about packaging waste, manufacturers have made significant efforts to improve in this area.

IMA Safe has developed smart solutions to package parenteral and very fragile products such as vials, ampoules and syringes on paper trays inside a carton to create 100% paper-based packaging, reducing the environmental impact while ensuring, a high level of product protection.
IMA Safe proudly supports more environmentally friendly vaccine packaging.
Not only does packaging have the functional purpose of protecting, conserving and transporting the product, it also has an informative purpose and very often contains data unseen by the end consumer.
This data is essential to protect against counterfeiting and to facilitate the tracking of
the product at arrival and distribution points.

At IMA BFB division, we design and manufacture end-of-line equipment and we can count on the most comprehensive range of secondary packaging machines in order to protect the product and the information within. Flexibility, customised solutions
and engineering capabilities, together with a highly professional service network, are the ingredients which help our customers gain a competitive advantage. Our wide range of overwrapping, banding and hrink-wrapping machines can process any type of pack guaranteeing high efficiency even with unstable products. Whichever type of case packing you are looking for, we can supply it. From wrap-around to side or top loading, all our models are conceived with reduced footprints, while assuring ergonomics and easy operator access for any type of cleaning or maintenance operations. All of our solutions are devised to preserve the integrity of the contents, ensure total control throughout all stages of the serialization process and enable safe storage.
Our range includes integrated case-packing and palletizing solutions and a robotized de-palletization system for different products, such as jars, vials and bottles positioned in heat formed trays. We have recently developed innovative new product handling solutions for blow-fill-seal containers including those designed for inhalers, pens or auto-injectors and other highly sensitive pharmaceutical components.
It is our mission to devise optimal turnkey solutions for different applications with the right combination of high production speeds.