Roll-Fed Square Bottom Paper Bag Machine

• After-sales Service: 24 Hours After-Sales Service to Help Customer
• Warranty: 1 Year
• Machine Type: Bag Forming Machine
• Bag Type: Shopping Bag
• Characteristic: Automatic Glue
• Computerized: Computerized
• Model NO.: LTY-ZD-QFJ21+H75+B75+T41500BC
• Speed: High
• Width: 80-250
• Size and Shape: 4100×1900×1600
• Long: 20-100
• Weight: 3600
• Material: Paper
• Usage: Shopping Bag, Garment Bag, Leisure Food Bag, Bread Bags, Airsickness Bag, Fruit Bag
• Transport Package: Wrapping Film Packing/Wooden Case
• Specification: paper roll dia: 1200mm
• Trademark: LOYALTY
• Origin: China
• Production Capacity: 10sets/Month

Product Description

1. Product Specification
   1. Product Introduction

This machine is designed to manufacture square bottom paper bags with handles from paper roll, paper patch roll and paper rope, and it is an ideal equipment for producing paper handbags fast. By implementing steps including flexo printing, handle making, handle application, tube forming, tube cutting and bottom forming within a fully automatic process, this machine can effectively save labor costs. The equipped photoelectric detector can correct cutting length, so as to ensure cutting precision. SIEMENS PLC system ensures that the machine can perform quickly and stably, as well as reduce adjusting time for different bag sizes. Special bags collection platform and counting function, improve packing efficiency of paper bags packing. Thanks to perfect technologies and fast production speed, this machine can produce paper handbags with high quality in many different forms, which are especially suitable for food and clothing industries.

1. 1. Main Technical Parameter

Model	LTY-ZD-QFJ21+H75+B75+T41500BC
Paper Roll Width	630~1530mm
Max. Paper Roll Diameter	φ1200mm
Material Core Diameter	Ф76mm(3")
Paper Thickness	90~170g/m^2
Bag Body Width	220~540mm
Paper Tube Length	380~650mm (with Handle) 380~770mm(without Handle)
Bag Bottom Size	80~210mm
Printing Repeat Length	230~800mm
Printing Width	1460mm
Printing Thickness of Plate	2.84mm
Thickness of Tape	0.5mm
Printing Color Registration Accuracy	±0.2~0.3mm
Twisted Handle Parameters	refer to section 2.3.
Flat Handle Parameters	refer to section 2.4.
Max. Production Speed	120bags/min
Total Power	54kw
Total Weight	Approx. 28000kg
Overall Dimension	L18000mm×W6000mm×H3100mm

Note: the parameters above are not absolute; operator's skills, temperature, moisture, material and size of paper, categories and quality of glue can affect production speed, rejection rate, and applicable range of machine.
 

1. Detailed Specification
   1. Unwinding Section

1. Separate single-station unwinding roll stand with hydraulic lifting device.
2. Air shaft for paper reel loading, equipped with air gun.
3. Magnetic powder brake for unwinding and automatically constant tension controller for unwinding tension control.                                   
4. EPC web guide control system for material alignment.
5. Automatic Stop Function: the machine stops automatically when materials are broken.
6. Automatic Replacement Alarm Function: the alarm will be triggered automatically to inform the operator for replacement when material reel diameter becomes too small.
   1. 4-color Printing Section

1. Space is saved because of stack-style.                  
2. Rubber cylinder transfers ink onto paper; when the machine stops, independent motor drives, the cylinder to continue rotating to avoid ink drying.
3. Ceramic anilox roller for ink transferring (LPI can be customized).
4. When the machine stops, anilox rollers and printing cylinders are disengaged automatically.
5. Equipped with one set of printing cylinders (printing length can be customized).
6. Color Registration Mode:Manual.
7. The pressure between printing cylinder and base cylinder, as well as the pressure between anilox roller and printing cylinder can be adjusted by hands. It is possible to adjust on both sides at the same time or on one side.
8. The ink amount on anilox roller can be adjusted by the corresponding eccentric worm gear.
9. Main Technical Parameter:

Inline Printer	T41500BC
Max. Printing material width	1500mm
Max. Printing width	1460mm
Printing Repeat Length	320~800mm
Printing Speed	5~100mmin
Thickness of Printing Plate	2.84mm or Customized
Thickness of Tape	0.5mm or Customized
Printing Color Registration Accuracy	±0.2~0.3mm

1. 1. Twisted Handle Making Section
2. Two unwinding rollstands for up/down paper strips are controlled separately by EPC control systems.
3. Independent servo motor is adopted in this section.
4. Hot melt glue device and water glue device for pasting paper strings onto up/down paper strips.
5. Perforating paper strip after pasting ensures the accuracy of conveying and cutting bag handles.
6. Material parameters:

 

1. Handle size:

Twisted Handle Size Range
A: Handle Length	110~115mm
B: Patch Width	45~50mm
C: Patch Length	190.5mm
D: Handle Width	95.3mm

1. 1.  
   2. Flat Handle Making Section
2. Two unwinding rollstands for up/down paper strips are controlled separately by EPC control systems.
3. Independent servo motor is adopted in this section.
4. Hot melt glue device with 2 glue pipes for forming 2 flat ropes separately and 1 glue pipe for pasting paper ropes onto up/down paper strips.
5. Perforating paper strip after pasting ensures the accuracy of conveying and cutting bag handles.
6. Material parameters:

1. Handle size:

Flat Handle Size Range
A: Handle Length	100mm
B: Patch Width	40~50 mm
C: Patch Length	190.4 mm
D: Handle Width	108 mm

1. 1. Handle Application Section
2. Adopt floating compensation device for conveying handles, to avoid accumulated errors of paper handle length.
3. This section is driven by servo motors, to precisely ensure the synchronization between it and other sections.
4. The cutting and gluing of paper handles are controlled by servo motors, as synchronous as the tub cutting of the main machine.
5. Contact rollers transfer pattern is adopted in gluing paper handles.
6. Vacuum suction pattern is adopted in transferring handles onto conveyer belt.
7. Handles are compressed onto the paper web with a series of pneumatic rollers, to ensure the pasting strength.
   1. Tube Forming Section

1. Adjustable forming mould is applied to avoid changing mould for different sizes (side sealing is above the forming mould).
2. Automatic cold glue spray device is adopted for side glue application.
3. Adjustable multi-discs for side tucking, which reduces the resistance of tube forming efficiently.                           
4. The positions of pressing wheels can be adjusted.
5. Equipped with 3 forming moulds.(they can make all sizes)
   1. Bottom Forming Section

1. The whole machine is mainly controlled by inverter-fed motor.
2. Materials feeding is managed by Independent Servo Draw Roll Drive System.
3. Automatic photocell correction system is used for running materials.
4. Rotary serrated cutter with elliptical gears.
5. Adjustable bottom creasing device is used to adjust the bag bottom size.
6. Bottom opening cylinder with split cam is adopted for the stretch length adjustment of bottom opening.
7. Multi-layers bottom forming drum, center grippers, second tuck clamps, and drum grippers are adjustable for ease of changeover.
8. Automatic Disengaging Function: bottom gluing is prevented for empty feeding to avoid contamination to the surface of the drum.  
9. The clutch function in bottom gluing part is managed by pneumatic control.
   1. Bag Collection Section

1. Paper bags are delivered by belt, and collected at vertical workbench, which is easy for operations.
2. Bag collection drving wheels are driven by separate motor.
3. Bag shaping stucture consists of pressing rubber rollers.  
4. Separate servo motor controls the transverse delivery of finished products, and is able to adjust the bag releasing distance, which is convenient for counting.
   1. Control Section

1. The whole machine is centrally controlled by Original German SIEMENS PLC system, which has self-diagnosis function and monitors the machine status.
2. Touch screen is adopted for input control and machine status display.
3. The bag tube length is controlled by SIEMENS servo motor.
4. Bag collection speed is controlled by separate motor.
5. The whole machine is mainly controlled by inverter-fed motor.
6. Automatic counting; batch-delivery and acceleration-delivery functions.

 

1. 
   Others
   1. Working Condition

Parameters
Power	3 phases, 380V±10%, 50 Hz
Compressed Air	pressure: 0.6 MPa volume: approx. 0.5 m^3/min oil and humidity: ≯8 mg/m^3
Installation Height	max. altitude: 1500 m
Ambient Requirement	relative moisture: max. 65% when 40ºC temperature range: 10~40ºC

Note: due to the availability of imported components and special requirements of customized machines, with the precondition that the machine performance is not influenced, the machine specification may be changed without notice in advance.