Metal Cartridge Coating Custom Machine 

“Working with MWES helped us transition this new patented coating process from a lab scale to a high throughput production scale.  This was the first full-scale TriboGlide production machine that integrated all the process steps including the QC camera inspection and fully automated parts handling.  MWES did a great job with first understanding our technology and then help design the process flow.  Overall we are quite satisfied with the outcome that has enabled us to scale-up this new process for coating of pharmaceutical containers.”  –Vinay Sakhrani, Vice-President of Technology at TriboFilm Research Inc.

For more information on this equipment or other web handling needs please contact MWES.

Technologies Used in This Application

The Challenge


Midwest Engineered Systems Inc. (MWES) provided a Medical Syringe/Cartridge Coating Machine for a start-up medical company. The company needed a coating process and the automation equipment to meet the performance and demand quantities for their growing customer base.

The Solution


MWES partnered with TriboFilm Research Inc. for the overall coating process, utilizing the coating TriboGlide®.  TriboGlide® is a silicone-free lubrication system initially developed for the medical device and pharmaceutical industries.  This revolutionary system offers a superior inert, immobilized lubrication alternative to current lubrication methods including siliconization and grease or oil applications.  MWES integrated TriboFilm’s coating process into a full-scale production platform, meeting the demand quantities of the customer.


Midwest Engineered Systems Inc. fully automated solution included:


  • Bowl Feeder – A vibratory bowl feeder automatically orientates the parts and feeds the parts to the Assembly Machine.

  • Dial Assembly – A servo indexing rotary dial indexing system with part nesting moved the parts through the coating process.

  • Ionizers – Ionizers were used to blow off any dust particles and to reduce the static electricity of the parts prior to the coating process.

  • Pre and Post Plasma Treatment – The parts needed to be treated with a gas plasma both before and after the TriboGlide® coating is applied.  The TriboGlide process uses a unique ‘Downstream Plasma’ process which operates at atmospheric pressure to enable high throughput.  The first plasma treatment increases the surface tension of the area where the coating is going to be applied for better adhesion characteristics.  The second plasma treatment finalizes the coating process to provide the excellent lubrication properties needed for the product application.

  • Coating Spray – The TriboGlide® coating is sprayed with a positive displacement pumping system. This allows for very precise and repeatable amounts of the coating onto the product.

  • Vision System - A proprietary vision system is used to inspect the coating after it has been applied to the product.  It is able to measure the uniformity and dispersion of the coating to verify the consistency of the process.

  • Process Testing & Install -    All equipment was set up in the MWES facility for production trial runs and testing before installation.  Final runoff testing was conducted at the customer’s site to ensure the system met all requirements.



Impact to the Customer


The final solution of the Syringe/Cartridge Coating custom machine had the following benefits to the customer:


  • Met the quantity demands of their growing customer base.

  • Provided a superior performing product in the market place.

  • Quality assurance of their product based on repeatability of the manufacturing process.


Midwest Engineered Systems

W238N1800 Rockwood Drive
Waukesha, WI 53188
Call: 414-327-0000

  • Black LinkedIn Icon
  • Black Facebook Icon
  • Black Twitter Icon
  • Black YouTube Icon
  • Black Instagram Icon
Midwest Engineered Systems

MWES ITAR Compliance

24/7 Service & Support: