Automatic Triangle Folding and Rewinding Machine by Servo Motor Control




CWSY is a widely used rewinder with triangle folding device at maximum line speed 125 meter/min to convert single sheet CPP, OPP, BOPP, HDPE and LDPE film rolls to double layers folded film rolls with one side open to produce side sealed bags with or without flap.


After folding, it is strongly recommended to leave the folded rolls idle for few days before using them or else immediate use of the newly folded rolls will have their edges pop out after sealing and cutting as the edges are not stable yet, especially for side sealed bags.


  • Suitable for HDPE, LDPE, PP film folding.
  • Air cylinders for up and down of unwinding stand.
  • Dancing rollers with automatic tension control by AC motor with inverter for stable folded edge and perfect rewinding.
  • German made E.P.C (Edge Position Control) to make the rewinded roll’s edge stable.
  • Machine auto stops when film is broken or finished.
  • Triangle folding device.
  • Gusset inserting device at close side of folded film.
  • Digital meter counter with preset and controlled by meter counting roller device.
  • Dancing rollers at rewinder for continuous stable tension of film by servo motor.
  • Air cylinders for up and down of lay-on aluminum roller at rewinder.
  • Rewinder uses servo motor for fast stable speed and high quality rewinding.
  • Air cylinder for up and down of rewinder’s arm to unload finished rewinded rolls.
  • Air shafts for unwinder and rewinder units make change of rolls an easy task.

MODEL CWSY-800 CWSY-1000 CWSY-1200
Max. Single Sheet Film Width (mm)
800 1000 1200
Max. Single Sheet Film Roll Diameter (mm)
800 800 800
Thickness/Layer (mm)

0.03-0.08

0.03-0.08

0.03-0.08

Max. Folded Film Width (mm) 400 500 600

Max. Folded Film Roll Diameter (mm)

500

500

500

Paper Core Internal Diameter (inch)

3 3 3

Max. Production Speed (meter/min)

100

100

100

Power Required (kW)

3.5 4 4.5

Full Load Current (A)

10 ~ 15 10 ~ 15 10 ~ 15

Air Volume & Pressure

300 L/min

6 kg/cm2

300 L/min

6 kg/cm2

300 L/min

6 kg/cm2

Dimensions L × W × H (cm)

270 x 130 x 165

170 x 120 x 120

280 x 150 x 165

170 x 130 x 120

290 x 170 x 165

170 x 140 x 120

Packing L x W x H (CM)

280 x 170 x 195

180 x 160 x 150

290 x 190 x 195

180 x 170 x 150

300 x 210 x 195

180 x 180 x 150

Net Weight (kg)

1300 1500 1700

Gross Weight (kg)

1600 1800 2000

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