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Fast, safe and reliable – continuous rotary heat sealers from polystar®

Sometimes it has to be fast... especially when vast quantities of medical packaging are queuing up to be sealed securely and reliably. So it is probably nice in situations like this to have a helper by your side in the form of a polystar® continuous rotary heat sealer.

There are also different continuous rotary heat sealers for the different types of medical packaging. When choosing the “right” continuous rotary heat sealing machines, it is important to know, first of all, whether or not your sealing process is subject to a validation standard.

Continuous rotary heat sealers for medical packaging without a validation process

Perfect sealing results even without validation... is that possible? Of course it is! With the 620 DSM continuous rotary heat sealer, you can seal composite films (i.e. aluminium or paper composite) in bag form as well as conventional sterilisation films non-stop. The only thing to be aware of is that the films must have a sealable internal coating consisting of PE.

A lot of technical features are packed into the stainless steel housing of the polystar® 620 DSM: precise temperature regulation to the nearest degree and with a very low tolerance range, a broad 12 mm corrugated seam, and a constant throughput speed of 6.7 metres per minute. This list is not exhaustive, but merely contains the key elements for securely sealing medical packaging.

In the basic design, the 620 DSM continuous rotary heat sealer has a bag support table that makes it easier for you to guide the bag through during the sealing process. There is also a special version without the bag support table for heavy or bulky packaging. You then have the option of installing a roller track for bags of up to 2 kg or a driven table conveyor belt for bags of up to 5 kg upstream of the polystar® continuous rotary heat sealing machine.

Your work station is now set up and ready for non-stop operation. The bags are introduced into the machine from the right and come back out – automatically sealed – on the left.

Continuous rotary heat sealers for medical packaging with a monitored validation process as per DIN EN ISO 11607

We have already mentioned that the polystar® 620 DSM continuous rotary heat sealer continuously and reliably produces secure seals. But how secure is secure? And how can you document the sealing process? For medical packaging sealing procedures requiring validation, there is of course a solution within the polystar® product range: Continuous rotary heat sealing machines from the 981 DSM series.

The features common to all polystar® 981 DSM machines are the precise temperature setting to the nearest degree, an impressive constant speed of 8.5 metres per minute, and an adjustable tolerance range for the pressure applied by the spring-mounted sealing rollers. All three sealing parameters are of course monitored and recorded automatically during the sealing process in line with the validation standard DIN EN ISO 11607. All this – and more – is packed inside the stainless steel housing of the semi-automatic continuous rotary heat sealer. Another noteworthy feature is the feed direction of the 981 DSM series: Unlike other polystar® continuous rotary heat sealers, the bag is guided from left to right.

polystar® 981 DSM and 981 DSM-P – Continuous rotary heat sealers for validatable medical sterilisation packaging procedures

The sealing parameters – temperature, throughput speed and pressure – can either be documented by saving them on a USB stick (USB port is included in all 981 DSM series machines) and/or by printing them on the sterilisation packaging itself. You decide how you want to perform the duty of documenting your sealing processes:

  • 981 DSM: Documentation via USB
  • 981 DSM-P: Documentation via USB and/or imprint on paper side of sterilisation packaging

No matter what documentation method you choose, the throughput speed of 8.5 metres per minute is kept constant.

Another noteworthy feature is the extra-wide corrugated sealing seam measuring 15 mm. The corrugation is produced using spring-mounted embossing rollers at the outlet of the machine. The pressure is of course monitored and recorded automatically. And if there is a deviation outside the tolerance range set by you – because, for example, the sterilisation packaging was accidentally inserted wrinkled or creased – the automatic monitoring system sends out an error message, which is audible and visible on the display and logged. After confirming the error message, you can initiate the next sealing process using the membrane keyboard.

In fact, any other type of deviation outside the tolerance range – be it temperature, pressure or throughput speed – is also indicated audibly and visually. This means that incorrectly sealed bags can be automatically detected and discarded or sealed again.

TYVEK® – a special medical packaging material that requires a special sealing machine

We know from experience that packaging made from TYVEK® material must be sealed with particular care. Even though it is highly resistant to tears and punctures, it is sensitive to sealing temperatures that are too high or too low.

Too hot, and the sealing seam becomes transparent, which means that the bag cannot be peeled open without producing fibres. Too cold, and the mean cannot be sealed properly. The temperature range in which a perfect sealing seam can be achieved is very narrow.

The polystar® 981 DSM-T and 981 DSM-TP continuous rotary heat sealers are specially designed for automatically sealing TYVEK® packaging and also produce a smooth sealing seam measuring 15 mm in width. Otherwise, all technical parameters are identical to the other members of the polystar® 981 DSM family.

By the way...

...we offer sterilisation packaging as ready-made bags or as tube films (sterilisation rolls).

Just have a browse on our homepage in the “Foils/Sterilization packaging material” section.


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