a complete multiwall paper sack line

Tuber:

• 3 unwinders
• Perforating unit
• Printing unit with 4 colors
• Cross pasting unit for up to 3 plies
• Digital lengthwise injectors for 3 plies
• - Maximum repeat: 1300 mm, Minimum repeat: 380 mm, Maximum width: 650 mm, Minimum width: 200 mm

Transystem

Bottomer:

• Automatic rotary feeder
• Bottom patch unit each side
• Double valve unit
• Maximum depth: 170 mm, Minimum depth: 80 mm, Minimum distance between centers: 250 mm, - Maximum distance between centers: 600 mm (with a maximum depth of 150 mm)
• A single valve carriage that can hold 2 sheets.
• Palletizer

In the video we are producing flour bags, but its also suitable of course for cement bags, in fact, with cement bags is even faster.

General Data

• Material: Paper
• Bag length: 400 – 1050 mm
• Bag width: 220 – 550 mm
• Max. paper web width: 1120 mm
• Max. number of paper layers: 3 units
• Max. reel diameter: 1400 mm
• Max. production speed: 400 units/min

Electrical Connection

• Supply voltage: 3 × 400 V (±10%), 50 Hz
• Control voltage: 24 V DC

Compressed Air

• Required compressed air: 6.5 bar / 650 Nl/h

Unwinding

• Number of paper reels: 3 units
• Max. paper reel diameter: 1400 mm
• Core inner diameter: 76 mm

Perforation

• Perforation type: Spot perforation
• Selectable perforation settings: 3 units

Technical Data (Additional)

Cross Pasting

Pasting execution with applicators:

• 2 cross bars
• 2 glue application rollers
• 2 glue doctor rollers

Infeed

• Longitudinal pasting unit with suction nozzle strip: rotating with 3 nozzles and cleaning device

Machine Head

Design:

• Pre-stretching cylinders
• Holding and release cylinders
• Differential displacement

Flexographic Printing Unit

• Chrome-plated screen rollers: 80 L/cm
• Max. web width: 1450 mm
• Max. print width: 1350 mm
• Inking systems: 4 units
• Sleeve print length: from 550 mm

Noise Measurement

• Unwinding: 83 dB(A)
• Main control panel and viewing distance: 80 dB(A)

Note: Noise measurements were carried out in an “open field” at all workplaces considering the machine without influence of external noise sources. Noise values were determined according to the German professional association definitions “Printing and Paper” Noise Regulation VBG 121.

Bag Types

• Fig. 1: Straight-cut bag
• Fig. 2: Stepped bag

2.1 Paper Valve Types

Fig. 3: Paper valve types

1. Paper valve
2. Reinforcement sheet, folded infeed side
3. Reinforcement sheet, two layers
4. Paper tube valve, simple
5. Paper tube valve, folded infeed side
6. Paper tube valve, two walls
7. Tube valve made of coated paper
8. Paper valve, bottom sheet with thumb hole
9. Tube valve made of polyethylene with thumb hole (without Fig.)
10. Carrying sheet made of polyethylene (without Fig.)
11. Paper valve combination with polyethylene carrying sheet (without Fig.)
12. Articulated paper valve with thumb hole