Your #1 Square Bottom Paper Bag Machine Supplier in China

  • Cater to your specific industry
  • Customized for your specific paper bag
  • Grow every step with your paper bag manufacturing business
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The Best Option for Your Business

MTED makes square bottom paper bag machines that fit your needs and budget. Whether you’re making SOS bags, bags with handles, or custom sizes, we have a machine for you. Fast, reliable, and easy to use, our machines help you produce more with less effort.

RZFD-190/250 Square Bottom Paper Bag Machine
RZFD-190-2/4C Square Bottom Paper Bag Machine With Printing
RZFD-330/450 Square Bottom Paper Bag Machine
RZFD-330/450(2Ply) Square Bottom Paper Bag Machine
RZFD-330/450D Square Bottom Paper Bag Machine With D Cut Handle(Patch Bag)
RZFD-330/450W Square Bottom Paper Bag Machine With Window

Reliable, All-in-One Square Bottom Bag Machine

Tube forming of square bottom paper bag making machine
Tube Forming
Bag transport is carried out through rolls which do not leave any trace on the paper
Bottom closing of square bottom paper bag making machine
Bottom Closing
Precision rollers and closing fingers ensure a tight seal and well-shaped square bag bottom.
Automatic lubrication of square bottom paper bag making machine
Auto Lubrication
Automatic system for periodic lubrication of chains and gears
Electrical Cabinet of square bottom paper bag making machine
Electrical Cabinet
Air-conditioned electrical cabinet, constant temperature for long lifespan of electrical parts
VIsual inpspection of square bottom paper bag making machine
Visual Inspection
Automatic camera inspection of unqualified paper bags, save your labor, improve production efficiency
Automatic stacker of square bottom paper bag making machine
Automatic Stacker
Automatically counts and stacks finished paper bags, reducing manual work and making packaging easier.

Explore Our Range of Square Bottom Paper Bags

Looking for the perfect square bottom paper bag for your needs? Check out our variety of styles and features designed to meet different requirements, from standard to custom bags. Whether you need a sturdy bag for heavy items or a stylish option for retail, we’ve got you covered.

  • Square Bottom
  • Die Cut Window
  • Web Window
  • Die Cut Handle
  • Twisted Handle
  • Flat Handle
Questions? Concerns? Let’s Get in Touch!
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We’re Not The Only One Excited About Our Results

We know what you want and what we are going to achieve. In every detail, MTED are committed to satisfy your needs with our utmost. Let’s dive into some case studies here.
Square Bottom Paper Bag Machine (For Salt)
Salt Square Bottom Paper Bag Machine
McDonalds Paper Bag Machine with 4 Color Printing
McDonalds Paper Bag Machine with Printing
Infolding Flat Handle Paper Shopping Bag Machine
Infolding Flat Handle Paper Shopping Bag Machine
D Cut Handle Paper Bag Machine for Subway
Subway D Cut Handle Paper Bag Machine
  • Partners
  • Main Structure
  • Manufacturing Process
  • Certification

square bottom paper bag making machine Partners

Square Bottom Paper Bag Making Machine -manufacturing process 1
Designed for Your Bag

Your MTED square bottom paper bag making machine is tailored for your bag. MTED engineers check thoroughly your square bottom bag ( also called SOS bag or block bottom bag) characters and then discuss with you the functions to be included in your machinery solution. We also take productivity and cost efficiency into consideration.

Square Bottom Paper Bag Making Machine -manufacturing process 2
Quality Inspection

MTED takes stringent quality control of all material and spare parts in your square bottom paper bag making machine. Each item is traceable with a unique serial number. Every part is inspected by micrometer measurement. Every detail we care about on the factory floor turns out a vast difference in the machine running on your site.

Square Bottom Paper Bag Making Machine -manufacturing process 3

Precision Assembly

Thanks to our modernized processing machinery, we are able to customize you thousands of precision parts on time. All these parts made in house and supplied from our well-selected partners are assembled into your square bottom paper bag making machine in two main MTED workshops covering an area of 7500 square meters. 

Square Bottom Paper Bag Making Machine -manufacturing process 4
Electric Engineering

MTED is dedicated to developing its own electric engineering talents. Your MTED square bottom paper bag making machine is handled by who know both electric system and machine functions well. We design and install the servo control system, PLC and HMI control, automatic alarm system, product different data storage, etc according to your needs.

Square Bottom Paper Bag Making Machine -manufacturing process 5
Spare Parts Management

At MTED, all spare parts of your square bottom paper bag making machines are managed by ERP inventory software. Each spare part is embossed with one specific serial number as its identification.  In this way, the whole spare parts inventory management is simplified and streamlined. A big or small order of spare parts, MTED is able to respond to you right away!

Square Bottom Paper Bag Making Machine -manufacturing process 6
Factory Test

Once assembly finishes, your square bottom paper bag making machine will accept an internal test at MTED facility. We make sure that all components and controls are working properly according to the agreements between you and MTED. About one week will be spent on the whole test, to avoid missing any nonconformities. Necessary improvements will be carried out during each test.

square bottom paper bag making machine Certificates

Related Products

Frequently Asked Questions

1. How Many Colors Can the Inline Printing System Handle?

Most customers choose 2-color or 4-color inline printing, which meets general production needs. Some opt for 6-color for more complex designs. We also offer custom single-color inline printing for small logos or icons.

2. What Paper Materials Can the Machine Use?

You can use kraft paper, laminated paper, and greaseproof paper. The machine works with paper thicknesses from 50 to 160 gsm.

3. Can the Machine Make Thumb Cut Bags?

Yes, every square bottom paper bag machine we offer includes this feature. The thumb cut makes it easier to open the bag.

4. Can I Use a Pre-Printed Paper Roll on the Machine?

Yes. If you want the design to align perfectly on the bag, make sure the pre-printed roll has color marks. The eyemark sensor will detect them and cut at the right spot. You can also print inline if needed.

5. What’s the Machine Lead Time?

It takes 30 to 90 days, depending on your machine setup and our production schedule.

6. What After-Sales Service Do You Offer?

We’re here to help before and after you get your machine.

  • 1-Year Warranty – Every square bottom paper bag machine comes with a one-year warranty.
  • Lifetime Support – Our machines last a long time, and we’ll be here to help whenever you need.
  • Easy Part Replacement – Every part has a label, so it’s easy to track and replace.
  • Upgrades Available – You can upgrade or change parts anytime to keep your machine running well.
  • Training & Setup – We offer hands-on training at our place and can guide you through setup at yours.
  • Always Here to Help – Our engineers are ready to answer your questions and give support when needed.

Got a question? Just ask.

7. How Much Space Do I Need to Install a Square Bottom Paper Bag Machine?

Machine size depends on the model. Below is a table with machine sizes for reference.

Model NameDimensions
RZFD-190 8500 x 3200 x 1700 mm
RZFD-190 with printing12500 x 3200 x 2800 mm
RZFD-330/450 10,000 x 3700 x 1900 mm
RZFD-330/450 with printing12,500 x 3700 x 1900 mm
RZFD-330W with window11,000 x 3700 x 2000 mm
RZFD-330D with D-cut handle12,000 x 3450 x 1900 mm
If you need exact dimensions and layout, our team can provide a detailed machine layout to help you plan your space. Just reach out!
8. How Many Operators Do I Need to Run the Machine?

You need one person to operate the machine and two people to collect the bags. The machine has an automatic counting system, so you just set the number of bags you want, and it will group them for easy pickup.

9. What’s the Configuration of MTED Square Bottom Paper Bag Machines?

MTED square bottom paper bag machines use quality parts for smooth and steady operation:

  • SCHNEIDER – Touch screen control panel for easy operation.
  • Rexroth/LENZE (Germany) – PC program controller, servo motor, and servo driver for smooth running.
  • Hydraulic Pressure & Auto Tension Control – Keeps paper feeding steady.
  • EPC controller and ultrasonic sensor for precise alignment.
  • ABB – Motor frequency converter for better speed control.
  • EATON (USA) – Low-voltage electrical parts for safety and durability.
  • Glue Position Detector – Ensures accurate glue application.
  • Magnetic powder brake for tension control.
  • Swiss-Made – Finished bag conveyor belt for smooth bag transfer.
  • Air-Conditioned Electrical Cabinet – Protects parts and helps them last longer.
10. Does Your Machine Have CE Certification?

Yes, all MTED square bottom paper bag machines are CE certified. They meet European safety and quality standards, so you can use them with confidence.

11. Does Your Machine Have UL Certification?

Yes. We’re the first paper bag machine supplier in China to get UL certification.

Our machines also have CSA certification. As more customers in North America use our machines, we make sure they meet local safety and quality standards.

12. How to Calculate the Roll Paper Web Width?

Square bottom paper bags come in different sizes, so you don’t need the same paper roll for every bag. The paper roll width depends on the bag size.

Here’s a simple formula:

📌 2 × Bag Width + 2 × Gusset Width + Side Gluing Area = Total Paper Web Width

Figure 25: Calculating Paper Web Width of square bottom paper bag making machine

13. What Optional Functions Are Available on RZFD Series?

MTED offers customizable options to match different production needs:

Die Cut Window Unit of Square Bottom paper bag making machine

Die Cut Window Unit 

14. Comparative table of MTED Square Bottom Paper Bag Making Machines
 ModelRZFD-190RZFD-250RZFD-330RZFD-450ARZFD-450BRZFD-550N
Bag width (mm)80-200110-250120-330220-450240-450220-550
Bottom width (mm)50-10560-15060-180100-200100-220100-300
Cut-off length (mm)190-370240-470270-530300-630380-760350-760
Roll width (mm)Max. 640Max 830Max. 1050Max 1370Max 1370Max 1730
Roll diameter (mm)Max. 1500Max. 1500Max. 1500Max. 1500Max. 1500Max 1500
Paper weight (gsm)45-13050-15060-15080-16080-16080-160
Speed (bags/min)Max. 260Max.240Max 220Max 200Max 180Max 150
Power11.8KW12.1KW15KW15.9KW19.7KW18KW
Dimension (mm)8200*3200*200010000*3300*200010000*4000*220012600*3800*220012500*4200*220013000*6100*3400
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