Automatic Flat Bottom Paper Bag Making Machine

High Speed & High Precision

Precision V-Bottom sealing with various paper rolls capability 30-80gsm, professional glue formulation ensures firm sealing and high tear resistance. Seams completely aligned with no leakage, no seepage. Integrated servo pre perforation module: pointed tooth width and depth one touch adjustable. Non stop continuous forming logic – up to 600 bags/min, 12hours continuous operation without misalignment

Up to 10-600 bags/min
35-80g ultra thin paper compatible
Various paper material

Explore Our Flat Bottom Paper Bag Making Machine Series

CQA

Mechanical Gear Transmission

The CQA Mechanical Break Gear Type Flat Bottom Paper Bag Machine (Models CQA-400/650/850) is a high efficiency piece of equipment designed for high-speed production of handleless flat bottom eco friendly paper bags, widely used in food and shopping bag manufacturing.

CQB

Servo Drive Cutting by Rotary Knives

The CQB Mechanical Break Servo Driven Flat Bottom Paper Bag Machine (Models CQB-400/650/850) is a high speed, high precision piece of equipment dedicated to handling less flat bottom eco friendly paper bags, widely used for food, bread, nut, and shopping bag production.

CQC

Servo Drive Cutting by Rotary Knives with EPC

CQC Mechanical Breaking Servo Flat Bottom Paper Bag Machine is a high performance, fully automatic piece of equipment for flat bottom paper bag production.

CQE

Servo Drive Point Tooth Pre-perforation

The CQE Pre piercing Servo-Driven Flat Bottom Paper Bag Machine is a high speed, fully automatic equipment integrating pre piercing and full servo drive, specially designed for mass production of small to medium sized eco friendly flat bottom bags for food, bakery, nuts and snacks.

CQS

Full Servo Drive Point Tooth Pre-perforation With EPC

CQS Pre piercing Servo Flat Bottom Paper Bag Machine is specially developed for large size flat bottom eco friendly paper bags.

Technical Highlights

How do our technical highlights work for you?

Flat and firm, with bottom bonding strength far exceeding industry standards. Integrated flexo printing unit is optional, positioning error ≤±0.1mm, no printing ghosting at high production speeds. Suitable for food bags, bread bags, supermarket shopping bags, garment carrier bags, gift bags and takeaway bags.

01. Conveyor Optimisation

Integrated servo pre perforation module; one touch touchscreen settings for air vent spacing, tear line spacing and depth, suitable for breathable packaging of bread, dried fruit and seeds; flexible cushioning paper guide rods, optimised for 30–80g ultra thin grease resistant paper, ensuring tear free and scratch free paper feeding.

02. Precision Beveled V-Shaped Fold and Seal Forming Module

High precision beveled edge folding guides ensure that the bottom fold seams are perfectly aligned, creating a tight adhesive seal that prevents leakage of contents or grease from the bottom of the paper bags; the forming pressure rollers feature flexible, adaptive pressure capabilities that automatically adjust the clamping force to accommodate the characteristics of the paper.

03. Non stop, Continuous High Speed Forming

The forming station operates without pauses or interruptions, achieving a stable maximum speed of 600 small sized food bags per minute, with 12 hours of continuous high speed operation without misalignment.

04. Specialised flexible forming buffer structure for ultra thin paper

The elastic buffer of the clamping plates has been optimised for 30–80g grease-proof food paper, ensuring that the thin paper is not crushed during pressing. After forming, the V-shaped bag bottom is smooth, free from creases and false adhesion; the machine can stably produce mini food bags with a minimum width of 50mm.

CE, SGS, ISO certified: food grade material contact compliance, precision V-fold sealing with zero leakage, defect rate <0.03%.

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Advantages compared with competitors

Comparison of shortcomings with peers

Suitable only for thick paper weighing 80g or more; the damage rate for thin paper weighing less than 60g exceeds 10%.
Conventional flat bottom machines have low machining precision for the guide rails, resulting in misalignment of the bottom crease.
The clamping pressure is fixed, causing thin paper to be crushed and thick paper to bond poorly.
Similar high speed flat bottom machines use intermittent forming, which leads to frequent paper jams and misaligned creases when operating at higher speeds.

Advantages of CHENQI

Optimized elastic cushioning for the clamping plates to prevent tearing of thin paper during the sealing of 30–80g food grade greaseproof paper bags
After forming, the V-shaped bag bottom is smooth, wrinkle free, and free of false adhesion
Minimum stable production width: 50mm mini food bags.
Maximum stable production speed for small size food bags: Reach a maximum of 600 bags per minute; continuous high speed operation for 12 hours with no misalignment during forming.

FAQ

Find Q&A related to customization and services for solutions:

What paper materials can the flat bottom paper bag machine process?

The machine handles kraft paper, coated paper, laminated paper, food grade greaseproof paper, recycled paper, and wax paper ranging from 30 to 100 gsm, with optimal performance on 30-80 gsm thin paper.

How fast can the flat bottom paper bag machine produce bags?

The machine runs at up to 600 bags per minute with non stop continuous high speed forming logic, maintaining stable operation for 12+ hours without misalignment.

Can the machine produce perforated bags for breathable packaging?

Yes. The integrated servo pre perforation module allows one touch adjustment of hole spacing and depth for breathable holes or tear lines, ideal for bread, fruit, and seed packaging.

What causes poor sealing or glue application issues?

Poor sealing is often caused by incorrect temperature settings, worn sealing components, or improper pressure adjustment. Regular inspection of sealing elements and glue system calibration prevents these issues.

What after sales support do you provide?

We provide on-site installation, operator training, remote debugging, spare parts supply, 24 hour response, and lifetime maintenance service.

The CHENQI Making the Difference

Tailored for your success

With years of engineering experience, we provide a paper bag machine configuration that exactly meets your bag size, paper type, and output requirements: for optimal bag quality with maximum productivity.

Invest today: benefit long term

Ready for the future: flexibly process different paper materials (kraft, coated, greaseproof, recycled) with high output on various bag styles: from shopping bags to takeout carriers. Our solution grows with your business.

One stop integration

From unwinding to stacking: we at CHENQI see ourselves as your central partner for seamless end to end compatibility. Optional modules like handle pasting, printing, and window patching integrate perfectly.

The CHENQI Making the Difference

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