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Doy Sigma

Unified Flex presents Preformed Pouch Packaging Machine – Doy Sigma

Preformed pouch packaging machine designed for small to medium production volumes. It can pack Doy Stand-Up Pouches with zipper, Spout Pouches, 4 Side Seal Pouches and 3 Side seal pouches. This machine runs a servo motor mechanism for smooth flow of pouches in a linear path. A convenient belt driven pouch loading area allows for a rotary arm pickup of pouches. There are two primary stations. On the first station pouches are flexed and opened to receive product from a dosing machine. On the second station pouches are then sealed and transitioned out of the machine. Bag size change over are easy and quick. Wide range of optional features are available for this machine to work with snack food, produce, liquids, coffee and more. See all markets. 

Up to 20 pouches/min. Bag width: 10.50” max. Bag length: 13.75” max.


Bag style possibilities with this machine. Click on a desired bag style to learn more.

Pillow Bag - a packaging option for a bagging machine.Box Pouch - a packaging option for a bagging machine.4 Corner Block Bottom Bag - a packaging option for a bagging machine.Block Bottom Bag - a packaging option for a bagging machine.Doy style pouch - a packaging option for a bagging machine.Doy Rim Style Pouch - a packaging option for a bagging machine.Spout Seal Bag - a packaging option for a bagging machine.


• Motorized bag feeding system
• Mechanical arm for bag pickup
• Servo motor for linear bag movement
• Vacuum generator and suction cups
• Bag detection before filling
• Quick return on investment
• 7” Easy to use Touch screen
• PLC controlled functionality
• Digital temperature controllers
• Easy and quick bag change over
• Wide range of suction cups available
• Vacuum sensors to ensure bag opening
• Strong gripper fingers to hold bag firmly
• Thompson shaft & linear bearings
• Adjustable suction cup mounting elements
• Position sensors on all cylinders
• Off the shelf spare parts
• Easy replacement of wear & tear parts
• #304 Stainless construction
• Safety control sensors

Standard technical data Doy Sigma
Models 1
Bag width 4.75” 10.50”
Bag length 6” 13.75”
Speed bags/min 20
Machine width 38”
Machine length 65”
Machine height 56”
Horizontal jaw activation Pneumatic
Suction source Vacuum pump
Electronic control PLC
Human-machine interface Touch Panel
Electrical power supply AC single phase 220V/60 Hz
Power consumption 2.0 KW
Compressed air volume 40 CFM
Air pressure 80 psi

• Nitrogen gas flush
• Vacuum
• Bag shaking
• Hopper shaking
• Product settling
• Filling tube exhaust
• Inkjet printer
• Bag unloader
• Take away conveyor
• Indexing conveyor
• Lazy Susan bag collector


At Unified Flex we believe in empowering our customers. We use non-proprietary off the shelf parts on all our machines. Click on the link below to find out more.

At Unified Flex we believe service is equally important as manufacturing high-quality equipment. We offer a wide variety of pre-delivery and post-delivery services.  Click on the link below to find out more.


To learn more, click on desired markets below.


To learn more, click on the images below.

What can this machine do for your business?

INCREASE EFFICIENCY – pack products faster

HIGH QUALITY – reliable, consistent packages

INCREASE REVENUE – add multiple revenue streams

REDUCE COST – increase production using less manpower


Our application was unique and challenging because it required equipment that could produce a special shaped pouch. Filling the pouches also produced challenges because of the viscosity of our product. In June 2016 Unified Flex provided us with a customized turnkey system and high-quality packaging film that fit our application perfectly. They also provided us with training and technical support to overcome each challenge that surfaced. We are impressed with the high-quality packaging film and the exceptional printing quality for our pouches that Unified Flex supply us. All-in-all a total solution that assists us in bringing a unique single serving size product to the market.

Peter Ferreira
Nuts N More
Rating: 5

We’ve been working with Al Aman and his team at Unified Flex for approximately 5 years. Unified Flex worked on all aspects of our needs to make our process better. They were willing to do what we needed to get done and delivered exactly what we wanted. Not only did Unified Flex provide us with the most economical options, they also provided an exceptional service level that we couldn’t have asked for any better. The best part was, that we got the best bang-for-our-buck. We know we could have spent many times more than what we did.  

Gaylan Little, Manager
Sqwincher Corporation
Rating: 5

While looking for a solution for our packaging requirements, Unified Flex presented themselves to be an end-to-end packaging partner, and that is exactly what we needed! Al Aman and his team provided Golden Crown Products with a full solution, from planning our manufacturing setup and providing the appropriate bagging machine, to providing design services for our brand, and supplying our packaging film for all our products. They provided invaluable training for our team and provide expert technical support and service. All we need to do is call and Unified Flex is there for us. We value our relationship with Unified Flex at the highest level and will continue to work with them for years to come.

Rafi Khuzmi
Golden Crown Products
Rating: 5
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