Paper bag making machine YG series

automatichigh-speed

Product overview
Paper bag making lines are a key investment under global plastic-reduction policies. The YG series (YG-330, YG-450A, YG-450B) offers roll-fed and sheet-fed configurations for flat, gusseted and square-bottom bags. Typical paper range is 60–150 g/m² and machines can be fitted with servo drives for stable high-speed running.

Key buying guidance

• Check GSM range: verify compatibility with your local paper stock (recommended test run).
• Production capacity: compare declared bags/min with expected speed on your paper and glue system.
• Feeding method: roll-fed lines yield higher throughput than sheet-fed; consider roll width and core size.
• Controls and drives: servo motors improve stability and reduce waste at top speeds.

Machine parameters (summary)

• Brand: YG Machinery
• Series / Models: YG series — YG-330, YG-450A, YG-450B
• YG-330: Cutting length 270–530 mm (270–430 mm with handle); Bag width 120–330 mm (200–330 mm with handle); Bottom width 60–180 mm; Paper thickness 60–150 g/m² (80–150 g/m² with handle); Paper roll width 380–1050 mm (620–1050 mm with handle); Roll diameter 1300 mm; Paper core 76 mm; Patch length 152 mm; Patch width 45–50 mm; Handle distance 75 mm.
• YG-450A: Cutting length 270–530 mm (270–430 mm with handle); Bag width 200–450 mm (240–450 mm with handle); Bottom width 80–180 mm; Paper thickness 80–150 g/m²; Paper roll width 590–1300 mm (710–1300 mm with handle); Roll diameter 1300 mm; Paper core 76 mm; Patch length 152/190 mm; Patch width 45–50 mm; Handle distance 75/95 mm.
• YG-450B: Cutting length 380–760 mm (380–660 mm with handle); Bag width 220–450 mm (240–450 mm with handle); Bottom width 80–200 mm; Paper thickness 80–150 g/m²; Paper roll width 630–1350 mm (710–1350 mm with handle); Roll diameter 1300 mm; Paper core 76 mm; Patch length 152/190 mm; Patch width 45–50 mm; Handle distance 75/95 mm.

What parameters matter most when buying
Prioritize production capacity, GSM compatibility and feeding method. Validate declared speeds with your paper type and adhesive system. Prefer servo-driven sections for repeatable quality and lower scrap rates.

Industry applications

• Food delivery: grease-proof flat or gusseted bags for takeaway and delivery.
• Bakery & boutiques: craft paper bags with handles for retail presentation.
• Supermarkets & grocery: square-bottom bags for stand-up packing and higher load capacity.

How plants calculate ROI
Estimate payback by including material scrap, labor, scheduled maintenance, power consumption and glue refill times. Higher daily output and reduced operator count shorten payback; photoelectric tracking and precise control reduce waste and improve return.

Overseas case study
Example: a medium packaging plant replaced manual feeding and gluing with an automated roll-fed square-bottom line, reducing operators from four to one, increasing daily capacity by ~60% and achieving machine payback in about seven months.

FAQ

• Difference between sharp bottom and square bottom? Sharp bottom machines are faster for lightweight bakery pouches; square bottom machines provide greater load capacity for retail and grocery bags.
• Daily maintenance needed? Clean bag formers and glue tanks daily; remove water-based glue residue with warm water at shift end to protect gears and bearings.

Technical specifications

• Brand: YG Machinery
• Series: YG series (models: YG-330, YG-450A, YG-450B)
• YG-330: Cutting length 270–530 mm (270–430 mm with handle); Bag width 120–330 mm (200–330 mm with handle); Bottom width 60–180 mm; Paper thickness 60–150 g/m² (80–150 g/m² with handle); Paper roll width 380–1050 mm (620–1050 mm with handle); Roll diameter 1300 mm; Paper core 76 mm; Patch length 152 mm; Patch width 45–50 mm; Handle distance 75 mm.
• YG-450A: Cutting length 270–530 mm (270–430 mm with handle); Bag width 200–450 mm (240–450 mm with handle); Bottom width 80–180 mm; Paper thickness 80–150 g/m²; Paper roll width 590–1300 mm (710–1300 mm with handle); Roll diameter 1300 mm; Paper core 76 mm; Patch length 152/190 mm; Patch width 45–50 mm; Handle distance 75/95 mm.
• YG-450B: Cutting length 380–760 mm (380–660 mm with handle); Bag width 220–450 mm (240–450 mm with handle); Bottom width 80–200 mm; Paper thickness 80–150 g/m²; Paper roll width 630–1350 mm (710–1350 mm with handle); Roll diameter 1300 mm; Paper core 76 mm; Patch length 152/190 mm; Patch width 45–50 mm; Handle distance 75/95 mm.