CMYK-420A is a Roll fed square bottom kraft paper bag making machine designed for square bottom kraft bags, grocery bags, retail bags and food packaging bags.
To configure CMYK-420A accurately, buyers should provide roll paper width, bottom width, gusset, paper GSM, printing and required speed. CHAMPION reviews these inputs against the finished bag sample before confirming the machine layout.
| Machine category | Roll fed square bottom kraft paper bag making machine |
|---|---|
| Model / product name | CMYK-420A - Paper Bag Digital Printing Machine (Double Printer Heads) |
| Suitable bag applications | square bottom kraft bags, grocery bags, retail bags and food packaging bags |
| Main production process | roll feeding, side gluing, bottom forming, cutting, folding and finished bag output |
| Buyer confirmation points | roll paper width, bottom width, gusset, paper GSM, printing and required speed |
Enter the finished luxury paper bag dimensions to calculate the required flat paper size and check whether the selected machine range is suitable.
CMYK-420A | Roll-fed square bottom paper bag machineThis calculator is for early project screening. Final machine selection should also confirm paper GSM, handle type, bottom structure, glue method, printing process and target production speed.
Machine Description
The digital paper bag printing machine is a plate-free inkjet printing system designed specifically for packaging products such as paper bags and tote bags. Using CMYK four-color inkjet technology, it can directly print electronic files (such as designs, text, and variable data) at high speed onto absorbent surfaces such as kraft paper, greaseproof paper, and biodegradable materials. Supporting single- or double-sided printing, it is suitable for small-batch customization, personalized logos, and variable data printing, significantly reducing the minimum order requirement for traditional printing.
Machine Features
Plate-Free & Small-Batch Customization
● Eliminate the traditional plate-making and plate-making processes of traditional printing; simply import the design file and start printing directly, significantly shortening production cycles.
● Single-piece printing, low cost, particularly suitable for personalized orders and urgent replenishment.
Fully Automated Production System
● Integrated dual-feed system and automatic receiving device support continuous feeding, reducing manual intervention, allowing one person to operate multiple machines.
● Automatic shutdown upon material runout, and a meter counter precisely controls print quantity for improved stability.
Efficient Printing Capacity
● Speed ??range: 2,000-20,000 pieces/hour (adjustable depending on design complexity).
Wide Material Compatibility
● Compatible with a variety of paper bag materials: kraft paper, greaseproof paper (barbecue bags), hamburger paper, biodegradable lunch boxes, etc.
● Expandable printing capabilities for other packaging: paper cups, pizza boxes, seed cards, round fans, etc.
Color and Precision Advantages
● CMYK four-color printing, unlimited color combinations, and photo-quality gradient effects.
● Utilizes a circulating ink supply system (such as XAAR printhead technology) to reduce the risk of printhead clogging and ensure precise ink droplet placement.
Environmentally friendly and economical
● Uses water-based ink, free of volatile organic compounds (VOCs), meeting green production standards.
● Low energy consumption (select models reach 3kW), saving electricity and storage costs compared to traditional offset printing (no printing plate storage required).
Typical Applications
● Commercial customization: Branded tote bags, holiday gift bags, promotional paper bags.
● Food packaging: Food-safe printing on toast bags, barbecue bags, hamburger wrappers, and more.
● Industrial packaging: Multi-color printing on woven ton bags and industrial kraft paper bags.
Machine Floor Plan

| Model | CMYK-420A |
| Printer Head | HP 452 |
| Printing Width | 210mm/Single 420mm/ Double |
| Printing Color | 4 Colors CMYK Standard |
| Printing Contents | Text, mathematics, pictures, colors, variable pictures, and flexible design layout |
| Paper Width | 50-600mm |
| Paper Thickness | 1.0-0.5mm |
| Speed | High resolution mode: 15 meters per min, high / Speed mold: 35 meters per min |
| Voltage | 220V |
| Power | 3KW |
| Machine Size | L5800 x W1300 x H1500mm |
| Machine Weight | Approx: 1000kg |

1)Auto Feeding
2)Paper Bag
3)Paper Bag Positioning
4)Paper Bag Flattening
5)Graphic Printing
6)Printing Finished Bag Output
7)Auto Collection
CMYK-420A: Confirm paper roll width and diameter, bag width, tube length, gusset, bottom width, paper GSM, printing colors, handle requirement and target speed.
CMYK-420A: Typical applications include kraft shopping bags, grocery bags, takeaway bags, bakery bags and retail carrier bags that need a stable standing bottom.