Filling -> Closing -> Conveying -> Finishing -> Consumables -> Parts & Services

In the realm of industrial packaging, Inpak Systems works with a variety of top-notch industrial packaging companies. We offer well-made, durable, and competitively priced machinery, all of which perform consistently well for customers of all sizes. In this blog post, we’re reviewing a Closing option in the form of the Union Special (US) models 2200 and 4000 portable bag closing machines.

US 2200 M18
The US 2200 M18 is a battery-powered bag closer that is ideal for mobile applications where corded power is not available. It features a two-thread double-locked stitch (type 401) and an adjustable stitch length from 3 to 8½ stitches per inch. The US 2200 can sew materials up to 3/8″ thick or up to 24 plies of paper. It is also lightweight and portable, weighing only 12 pounds.

The 2200 M18 has an 18-volt LI plug-in rechargeable battery capable of sewing up to 9mm thick fabric or up to 24 plies of paper. The maximum recharging time is 90 minutes. The 2200 M18 has coarse top and bottom feed, a larger thread cone, and variable RPM. It includes a battery charger and uses larger-size heavy-duty needles.

The US 2200 is a versatile and durable portable sewing machine that is ideal for a variety of bag closing and sewing applications. The US 2200 is a rechargeable, battery-operated, portable stitcher for joining geotextiles, fabrics, and closing paper, jute, cotton, or plastic bags. 

This handheld bag-closing machine is the only one in the world with an upper and lower feed for sewing material together in the same layer. The contact pressure of the feed dogs can be adjusted to protect surfaces.

Usually, this machine is suspended by means of a spring-loaded autostat to facilitate the work. However, it is also possible to attach the machines to a pedestal with a foot switch to facilitate and increase production. At the same time, the height adjustment allows you to reproduce a constant straight seam as often as you want, which strengthens the overall qualitative image of your products in the sale.

Photo of the Union Special (US) 2200












Key features of the Union Special 2200:

  • Double thread chain stitch: Powerful feed mechanism for consistent stitching. This stitch type is incredibly strong and secure, ideal for heavy-duty applications like closing multi-wall paper bags, burlap sacks, and other tough materials.
  • Adjustable sewing speed: You can adjust the sewing speed from 4 to 10 stitches per second to match the material and application.
  • Automatic thread tensioning: Ensures consistent stitch quality without the need for manual adjustments
  • Large bobbin capacity: Reduces the need for frequent bobbin changes, saving time and effort
  • Durable construction: Built with heavy-duty components for long-lasting performance in demanding environments. Durable, fiberglass-reinforced polyamide housing
  • Easy to operate: Simple controls and straightforward operation make it suitable for even new users
  • Portable design: Lightweight and compact for easy maneuverability & transport and use in different locations. Optional battery-powered operation for cordless use.
  • Versatile: The US 2200 M18 is versatile and can be used for a variety of applications, including: Closing bags of all types, including paper, polypropylene, burlap, and cotton; Sewing geotextiles, tarps, tents, and banners; Repairing semi-truck tarps; Binding golf and turf mats; and more

Benefits of the US 2200:

  • Increased efficiency and productivity: The fast sewing speed and automatic features help you close bags quickly and easily, boosting your overall output.
  • Improved product quality and safety: The strong double-thread chain stitch helps prevent bags from bursting or splitting, protecting your products and ensuring safe handling.
  • Versatility: The US 2200 can handle a wide range of bag materials and thicknesses, making it a suitable choice for various applications.
  • Reduced labor costs: Automating the bag closing process can minimize the need for manual labor, potentially lowering your labor expenses.
  • Cost-effective: The US 2200’s durability, efficiency, and versatility make it a worthwhile investment in the long run.
  • Portable convenience: The lightweight and compact design allows you to easily move the machine around your workspace or different job sites.
  • Ease of use: The US 2200 is straightforward to operate, even for those with limited sewing experience.

US 4000
The US 4000 is our low-cost entry-level model for users with small quantities. This machine is therefore well-suited for closing simple bags where a double chain stitch is not necessary.

Its simple and robust mechanics make it easy to repair and maintain for most users. Normally, this machine is suspended by means of a spring balancer to facilitate the work. However, it is also possible to attach the machines to a pedestal with a foot switch to facilitate and increase production.

At the same time, thanks to the height adjustment, you can reproduce a constant straight seam as often as you want, which strengthens the overall qualitative image of your products in the sale.

Photo of the US 4400












Key features of the US 4000:

  • Portable and lightweight: Weighing only 12 pounds, the US 4000 is super mobile and can be easily transported from one location to another
  • Economical: This model is an affordable option for those seeking a simple and reliable bag-closing solution
  • Single-thread stitching: Utilizing a single thread for stitching simplifies operation and maintenance.
  • Built-in thread chain cutter: This convenient feature automatically cuts the thread chain at the completion of each stitch, saving you time and effort.
  • 101 Stitch type: This basic stitch type is strong and reliable, perfect for closing bags securely.
  • Easy to operate: The US 4000 is user-friendly, requiring minimal training to operate.
  • Versatile: Closing bags of animal feed; Sealing fertilizer bags; Securing bags of potatoes, grass seed, spices, chemicals, coal, pellets, or coffee beansIdeal for small businesses, farms, and home use

Benefits of using the US 4000:

  • Increased productivity: This efficient machine helps to close bags quickly and easily, saving you time and effort.
  • Improved accuracy: The single-thread stitching and built-in thread chain cutter ensure accurate and consistent closures.
  • Reduced costs: The US 4000 is an economical option compared to more expensive bag closers.
  • Minimal maintenance: This model requires little maintenance, keeping your bag closing operation running smoothly.

Startup, Preventative Maintenance, and In-Plant Services
Inpak is unique in that our Field Service Technicians can perform Startup, Preventative Maintenance, and In-Plant Services on all of our equipment. We’re ready and able to assist you to get and keep your packaging equipment up & running.

Startup Services:
Inpak Systems offers a startup service on your new US 2200 or US 4400 equipment. This includes verifying that the equipment is operating properly to factory specifications. The startup service includes operation verification, operator training, and maintenance training.

Preventative Maintenance Services:
To prevent downtime and costly emergency repairs, preventive maintenance (PM) services are available for all of your equipment. To ensure your US 2200 or US 4400 operates at maximum efficiency, PMs can be arranged to fit your production schedule.

In-Plant Repair Services:
Inpak Systems offers in-plant repair of your US 2200 or US 4400 equipment. Our experienced, factory-trained, and certified technicians use genuine OEM parts to ensure your equipment is restored to original factory operating specifications. Dispatched from our WI location, we offer national coverage and we ensure a quick response throughout the Midwest.

Contact Inpak for a Field Service Estimate


Filling your packaging needs
How can Inpak Systems help you with your industrial packaging needs? Contact us at 608-221-8180, [email protected], and/or fill out the Packaging Needs Worksheet here. Find out more on our Inpak YouTube channel and subscribe to stay updated as we continue to expand our product lines.

The blog post above is geared toward the Closing end of the packaging process. Inpak Systems has, for 35+ years and counting, provided simple and sophisticated packaging solutions for small, medium, and large businesses. Whether it’s Filling -> Closing -> Conveying -> Finishing -> Consumables -> Parts & Services…we likely have what you need to take your business to the next level. Inpak Systems’ packaging solutions and parts & services are just a few steps away.

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