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Paper Bag Machine

Automatic Square Bottom Paper Bag Machine with Window Patch | LZ-FD350W

The LZ-FD350W is an automatic window-patch square bottom paper bag machine for producing paper bags with transparent windows for bakery, food and retail packaging.

GET A QUOTE · 12H REPLY VIEW FULL SPECIFICATIONS

QUICK FACTS · LZ-FD350W

Production Speed30–150 bags/min
Bag Width Range120–330 mm
Paper GSM70–150 g/m²
Bag Length Range270–530 mm
Bag Bottom Width70–180 mm
Total Power36 kW · 380V
Machine Weight11,800 Kg
Overview Process Flow Specifications Advantages Get Quote

LZ-FD350W - Paper Bag Machine Window Patch

Premium Square Bottom Paper Bag Machine with Window Function, perfectly suited for food packaging to showcase contents directly.

LZ-FD350W Window Patch

Square Bottom Paper Bag Machine

The LZ-FD350W is an automatic window patch square bottom paper bag machine designed for producing paper bags with transparent windows for bakery, food and retail packaging. It features full safety covers with alarm stop function, supporting steady production of food, bread and nut bags. The modular structure enables independent operation of feeding, forming and sealing units, greatly boosting production efficiency while lowering manual cost. It fits 70-150gsm paper for stable long-run operation.

120–330 mm Bag Width
70–150 g/m² Paper Range
30–150 bags/min Max Speed
15500×3600×2050 Dimension (mm)
REQUEST A QUOTE → COMPARE MODELS

Paper Bag Forming Process

11 fully automated steps from roll stock to finished bag — all in one continuous pass.

Main Technical Parameters — Full Comparison.

The LZ-FD350W is configured for automatic window patch paper bag production with stable long-run operation.

Parameter Specification
Model LZ-FD350W
Cut-off Length 270 – 530 mm
Bag Width 120 – 330 mm
Punch Hole Width 40 – 120 mm
Punch Hole Height 40 – 120 mm
Film Thickness 20 – 37 µm
Bag Bottom Width 70 – 180 mm
Basis Weight 70 – 150 g/m²
Bag Making Speed 30 – 150 pcs/min
Roll Width 400 – 1040 mm
Roll Diameter 1500 mm
Required Compressed Air ≥ 0.36 m³/min   0.5 – 0.8 MPa
Electrical Specifications 380V / 3-Phase 4-Wire   36 kW
Machine Weight 11,800 kg
Machine Dimensions (L×W×H) 15,500 × 3,600 × 2,050 mm

Core Advantages

Key Advantages of the LZ-FD350W

Inline Window Patching

Integrates window patching into the bag production process for efficient production of window paper bags.

Precise Film Positioning

Controlled film feeding and positioning help maintain accurate window placement during continuous production.

Stable Web Handling

Automatic tension control supports smooth paper and film feeding throughout the production process.

Consistent Bag Forming

Coordinated forming and control systems help maintain consistent bag dimensions and production quality.

Food Packaging Applications

Suitable for bakery, snack, fruit and other packaging applications where window bags are required.

Reliable Production Performance

Stable mechanical and control systems support continuous operation and routine production requirements.

Let Linz Pack take your business to the next level right now!

It's not just about having a great machine — it's about having a trusted, seasoned supplier who helps you build your production line and grow your profits. Let Linz Pack help you win.

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