Block Bottom Valve Bag Making Machine

Equipment Image

Item	Specification
Model	BVM-120
Forming Method	Hot air welding
Feasible Material	Laminated PP tubular fabric
Finished Bag Type	Open-mouth bag and block bottom valve bag
Designed Max Speed	120 pcs/min
Production Speed by Bottom Width	8-9 cm: <=100 pcs/min; 10-11 cm: <=110 pcs/min; 12-13 cm: <=90 pcs/min; 14-16 cm: <=70 pcs/min
Sack Width	350-600 mm
Finished Sack Length	450-910 mm
Bottom Width (Valve Bag)	80-160 mm
Valve Cutting Length	80-200 mm
Bottom Patch Cutting Length	230-500 mm
Bottom Patch Width	75-175 mm
Basic Fabric Requirement	55-80 g/m2
Lamination Requirement	18-20 g/m2
Lamination Strength	>=2.7 N/cm
Lamination Trimming Edge Width	<=5 mm
Micro-Perforation Density	64 needles/cm2, double-side treatment
Unwinding Roll Diameter	1000-1400 mm
Roll Core Diameter	3 inch and 8 inch available
Total Power	120 kW
Machine Size	15 x 8.5 x 2.3 m
Power Supply	380V, 3-phase AC with zero and ground line; voltage regulator recommended if voltage fluctuates greatly
Air Source	0.7 MPa, 120 m3/h
Water Source	0.4 MPa, 1 m3/h, <20°C

Standby rolls load without machine stop to improve roll exchange efficiency.

Double-side micro perforation treatment for better air permeability.

Servo-driven cutting system for stable and precise cutting quality.

Servo-driven gripper mechanism to turn bag direction in process.

Servo-driven suction and spreader for reliable bag end opening.

Bottom folding for end closing with easy adjustment by bottom width.

Hot-air bottom welding with high strength and temperature compensation.

Finished bag delivery section with automatic counting.