MD-850 Medical Rotary Sealer
This advanced medical packager is German-designed and built for precision duty, MD-850-US.
German engineered and built, the MD-850-US medical pouch sealer is an excellent choice for medical device companies wishing to seal their TyVek® and clear film pouch.
With complete attention to the rigors of the sterile barrier system, the MD-850-US is a production performer. Simply feed the opened end of your pouch and the MD-850-US advanced conveyance system feeds your pouch across dual-heated platens that are precisely controlled using the system’s on-board computer.

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Also, the MD-850-US also can be used with our optional roller table in order to support heavy medical devices such as orthopedic implants, etc. As your pouch conveys through the system, it now enters into the transducer-monitored pinch roller that engenders approximately 100 Newtons of force onto the pouch, finishing the sealing and curing process.
After the pouch is sealed, it continues past the print head and the unit now can print important markings such as ISO symbolization, expiration dating, date of manufacturing, lot codes, etc. All the printing is performed on the tailing end, or non-sterile side of the seal. We encourage you to view the video of this sealer in action in order to see how quickly all the above actions are performed. Operators continue to feed in open pouches, which makes for impressive throughput numbers at the end of each shift.
For over a decade, the MD-850-US medical pouch sealer has been introduced into cleanrooms across North America in order to meet the high demand of the growing medical device industry. Despite the MD-850-US’s incredible feature list and performance capabilities, the size of the unit is impressively small and able to sit on any countertop in your cleanroom to begin its duty as a high-output packaging machine that was designed from its very beginning to meet the rigorous and tightening requirements of ISO 11607.
Complete Medical Packaging Workstation

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The MD-850-US medical pouch sealer ships to you with a complete calibration. This high-resolution calibration includes a dual-zone thermal calibration, but also includes a transducer calibration. Each machine ships with its requisite calibration sticker in place on the machine and also includes raw readout data and calibration certificate from our advanced metrology lab. The system will also be programmed with a reminder letting you know when your next calibration is due. The unit’s stainless steel body allows for shift to shift wipedowns in order to manage bio-burden at your packaging station. With its years of proven performance, the MD-850 is an excellent choice for packagers in the sterile device arena. Although rotary sealers are not recommended for all films, such as clear film to clear film or metalized pouches, it is an excellent choice for most device makers that are utilizing the standard TyVek to clear film pouch. Remember, if you are sealing foil, thermal adhesives or clear film to clear film, you may wish to click this link to learn more about our MS-350 medical pouch sealer.
Remember, when you buy an MD-850-US from Van der Stahl Scientific America, you are getting much more than accurate, long-duty scientific machinery. You are getting the support of on-staff certified packaging engineers, engineers’ initial no-cost metrology services, and our in-stock guarantee on most of our models. Also, when you purchase an MS-850-US from Van der Stahl Scientific, send us your pouches and we will perform an ASTM F-88 peel study in our empirical lab and print a comprehensive report that we will include with your machine. This provides a great way to begin your IQ OQ process and we help to define initial machine settings to fast-track your new MD-850-US into production. To find out more about our validation program or any technical service questions, call 800-550-3854 and choose option 3. Thanks for visiting Van der Stahl Scientific and we look forward to hearing from you soon.
Machine Specifications
- Guide plates made of chromium steel
- Double intake protection against foreign objects prevents machine malfunctions
- Roll Automatic temperature controlled on/off function
- Flexible and adjustable sealing and stamping
- Safe distance to DIN 58953-7, min. 30 mm
- Sterilization date and use-by date available in various formats with automatic updating Batch number
- Personnel number Print format rotateable
- Digital display of temperature through symbols in accordance with EN 980
- CE mark with follow-up text
- Adjustable print start margin in mm
- Simple front access ribbon
- Computer controlled sealing temperature
- 80-220°C, infinitely variable
- Digital display of temperature
- Temperature accuracy to DIN 58953-7 < ± 2%
- Motor starting cut-out in the event of 5°C deviation
- Thermal safety switch from the temperature set point value
- Laminated paper
- Plastic films (aluminum coated)
- Transparent foil compound film (PETP/PE) EN-868-5
- Transparent foil TyVek+ (PETP/PE) EN-868-9/10
Menu-Driven Controller
This simple-to-use menu-driven controller allows users to easily set not only machine's operational settings, but printer settings as well. Operators can select a host of pouch print functions such as ISO compliant symbolization. Operators can also select date of manufacturing, expiration dating, lot and product numbers.
The intuitive, simplified, membrane buttons create a comfortable and sensible user interface. A maintenance alert will flash on the display when the sealer is due for annual calibration. The calibration intervals can be determined at the time of calibration for any future date to better serve the quality team's needs.
The easy to read display can also be set up in multiple languages in order to thwart language barrier issues in a multi-national firm.
PTT-100V Package Testing Unit
Complete package quality lab right on your desktop, the PTT-100V
Quality teams agree - the best way to thwart the risk of a packaging failure in the market is accurate and regular testing and inspection. A product recall due to packaging failures is a senseless risk that can devastate a medical device company.
Van der Stahl Scientific’s package integrity lab understands the value of regular and thorough testing and it is within that spirit that we have developed the all new PTT-100V. This patented medical pouch test and inspection unit has received outstanding reviews from our customers. The PTT-100V’s compact size facilitates the placement of the unit throughout your facility. This system can even be used in the cleanroom for in-process visual inspection of your medical pouches.
This system is designed to harmonize with an ASTM-1886 and will add an important element of seal evaluation. After the operator visually inspects the seal, they can simply tap the pass button or the fail button, depending on the outcome of the visual inspection. If the product fails the visual inspection, the operator is prompted to input one of 10 possible seal failure causations. Once the operator selects the corresponding number of the failure, the unit will date and time stamp the inspection and this information can be purged later on the unit’s included software.
The onboard memory will also hold, as well as date/time stamp, all seal strength information that is recorded on the PTT-100V’s tensile tester. This data archiving is an important part of an audit path. more
Just as important as the quality products we offer,
Just as important as the quality products we offer, our staff of exuberant and talented individuals can guide you through your project.
At Van der Stähl Scientific we have a basic philosophy: If you're in the business of providing machinery that seals sterile packs, you need to have a solid understanding of the integrity of the seal your machine creates. Enter the Van der Stähl Scientific Package Integrity Lab. With an intense interest to provide our customers with exceptional customer
care, we have invested tens of thousands of dollars to create this full service sterile package integrity lab. This state of the art lab allows us to evaluate the pouches and bags that our machinery seals to better understand the total value of the seals that our machines produce. Our laboratory and trained technicians are able to scrutinize sterile packs through a variety of seal strength challenges. Some of these evaluation machines have actually been invented and built by our Sterile Packaging Group. more
After Market Support
Our World Class Engineering Staff and Genuine Machine Replacement Parts, Guaranteed Long, Trouble-Free Performance of Your Equipment
Lisa Durkin Hello and welcome to our parts area. Over the past two years, my staff and I have spent a great deal of time creating and implementing systems designed to be certain our customers have their needed parts.
Customer service is a passion with me and if you are having an issue with your machine, I would be glad to help you identify the correct part to keep your packaging equipment running in peak performance. This year, we instituted the shipped to you in 72 program. This system is designed to get your parts shipped from our parts center within 72 hours and in most cases, much sooner than that.
This year, look for new programs in our parts and service center that will increase your customer experience with Van der Stähl Scientific. During this less for more time we live in, we think you will be pleased with a more for less model that has become our company mantra. best regards, Lisa Durkin, 800-550-3854 x214 more
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