CHW-1821 Semi-automatic Pallet Stretch Wrapper


CHW-1821, a semi-automatic pallet stretch wrapping machine, efficiently secures pallet loads with stretch film while operating with the assistance of an operator. The operator manually positions the pallet load onto the wrapping turntable and attaches the film tail to the bag to commence the wrapping cycle. Once initiated, the machine autonomously applies the stretch film, encasing the pallet load.

The operator's additional responsibilities include initiating the wrapping cycle by pressing the start button and severing the stretch film upon completion of the wrapping cycle. Upon activating the start button, the machine automatically executes the pre-selected wrapping program, ensuring consistent and effective load containment.

In terms of functionality, a semi-automatic stretch wrapper closely resembles its fully automatic counterpart, with the primary distinction being the extent of operator involvement. 


Any of CHAN Pack’s machines can be modified or customized design to suit your specification, if you are not sure exactly what you want then contact CHAN Pack and Sales team will discuss your requirements with you.



  • Controlled via PLC and traditional switches, providing manual and automatic modes.
  • Equipped with heavy-duty carriage rollers and self-lubricating turntable bearings.
  • Driven by chain, ensuring stability and smooth operation of the turntable.
  • Including a photocell for detecting pallet height.
  • Allowing easy adjustment of parameters like bottom wraps, top wraps, carriage ascent and descent speed, film tension, and starting wrap height.
  • Enabling film tension control adjustment on the control panel.
  • Featuring a film carriage designed with a safety anti-pressure plate for employee protection.
  • Incorporating separate start, reset, and emergency stop buttons for operational control.
  • Adjusting turntable speed and film carriage up/down speed through frequency inverter settings.
  • Utilizing soft start/stop mechanisms for smooth wrapping, extending the machine's lifespan.
  • Offering adjustable film feeding speed using a separate AC drive motor.
  • Optionally available with a powered pre-stretch system offering 200% stretch capacity .


Model CHW-1521 / 1524 CHW-1821 / 1824
Power Supply 1 phase / 3 phase, 220/380 V, 50/60 HZ 1 phase / 3 phase, 220/380 V, 50/60 HZ
Power consumption 1.3 KW 1.3 KW
Pallet dimensions L: 1,100~1,200 * W: 1,100~1,200 mm L: 1,100~1,300 * W: 1,100~1,300 mm
Turntable loading weight (include: pallet + product) 750~2,000 kg/pallet ( standard )
2,000~3,000 kg/pallet ( option)
750~2,000 kg/pallet ( standard)
2,000~3,000 kg/pallet ( option)
Turntable diameter 1,500 mm 1,800 mm
Wrapping height 2,100 mm / 2,400 mm 2,100 mm / 2,400 mm
Turntable height 80 mm 80 mm
Turntable speed 5~15 rpm 5~15 rpm
Film carriage speed 5 Meter/min. 5 Meter/min.
Film specification PE film, I.D.: 76 mm, O.D.: 250 mm, W: 500 mm PE film, I.D.: 76 mm, O.D.: 250 mm, W: 500 mm
Film thickness 17~35 micron 17~35 micron
Control system PLC PLC
Machine size L2623 x W1500 xH2410/2710 mm L2623 x W1500 x H2410/2710 mm
※CHUEN AN Pack reserves the right to modify specification for quality development.


Mechanical & Mechatronic aspect:

  • Powered pre-stretch system up to 200%.
  • 7" Human Machine Interface.
  • Top pressure plate. (* When the wrapping weight is less than 500 kg, it is recommended to install.)
  • Approach the Ramp to easily load & unload the pallets.
  • Low stretch film detector with alarm.
  • Continued Wrapping function - After finished troubleshooting, the film holder will be raised to the original break point where to continue wrapping.
  • Enhancements to double wrapping- double wrap in the middle of the pallet or wrap the film in the area where you decide.
  • Wrapping height 2,700 mm.

Special needs:

  • Customized color.