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three line hot sealing and hot cutting bag making machine with auto puncher

Technical Specifications
Item Specification
Machine Model Three-line T-shirt bag making machine / Three-line vest bag machine
Applicable Material HDPE, LDPE, biodegradable plastic film, PLA material
Number of Production Lines 3 lines
Bag Length Range 280 – 700 mm
Bag Width Range 150 – 350 mm
Film Thickness 0.015 – 0.05 mm
Production Speed Max 750 pcs/min (depends on material and bag size)
Sealing Method Hot sealing + hot cutting integrated
Punching Device Equipped with automatic pneumatic puncher for handle hole
Driving System Servo motor driving, precise length positioning
Control System PLC + touch screen human-machine interface
Photoelectric Tracking High-sensitivity photocell for color mark tracking
Heating Power Around 12 – 18 kW
Total Installed Power About 22 kW
Rated Voltage 380V / 3Phase / 50Hz
Machine Dimension (L×W×H) 6200×1800×1750 mm
Machine Weight Approx. 3800 kg
Optional Device Automatic waste collecting device, automatic counting & stacking device

Online Inquiry
Three Line Hot Sealing and Cutting Bag Making Machine with Auto Puncher Brief Introduction

This machine is a high-efficiency, fully automatic production equipment integrating unwinding, tension control, photoelectric tracking, three-line synchronous hot sealing, hot cutting, automatic punching, and finished product stacking. It is designed for mass production of T-shirt bags, flat bags, and vest bags from HDPE, LDPE, PLA, and biodegradable films.

Core Features

• Three-Line High-Speed Production: Adopts a triple-channel design, achieving a maximum output of 375–750 bags per minute (varies by model). It supports 3-line non-printed bags or 1-line printed + 2-line non-printed bags, significantly improving production efficiency.

• Precision Servo Control: Equipped with Japanese YASKAWA servo motors and drives for accurate length control and stable operation. The touch screen allows easy setting of bag length and production speed, reducing energy consumption.

• Integrated Auto Punching Unit: Built-in hydra-pneumatic punching device for fast, precise handle hole punching. Punching scraps are collected by a conveyor for recycling, with low noise and no oil leakage.

• Intelligent Operation System:

◦ PLC + HMI control with Chinese/English bilingual interface for easy parameter setting (temperature, speed, counting).

◦ German SICK photocell for accurate tracking of printed marks.

◦ Automatic stop alarm for abnormalities (film jam/breakage, temperature deviation, print mark loss) to ensure safety.

• Stable & Durable Structure: Heavy-duty steel frame ensures stability at high speeds. The turnover-type sealing device facilitates maintenance and knife replacement.

Main Applications

Widely used in retail, catering, food processing, and packaging industries for producing T-shirt bags, flat bags, vest bags, and handle bags. It processes various materials including HDPE, LDPE, biodegradable films, and recycled plastic films.

Technical Advantages

• High Automation: Reduces labor costs with automatic unwinding, tension control, punching, and stacking.

• Superior Bag Quality: Consistent sealing strength, neat cutting, and accurate hole positioning enhance product quality.

• Cost-Effective: High-speed production and low energy consumption reduce long-term operating costs.