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Auto Stretch Wrappers – Vertical: Rotary Arm

Helix 4/2 Stretch Wrapper

The Helix 4/2 is an automatic rotary arm style stretch wrapper designed to provide a rugged, flexible and high capacity automatic stretch wrapping solution.

The Helix 4/2 stretch wrapper is Robopac’s top offering in the rotary arm range and the choice of demanding customers, with high throughput capacity requirements.

The Helix 4/2 is a 36 RPM pallet wrapper machine with twin film carriage technology, capable of reaching up to 145 pallet loads per hour. This stretch wrapper machine is available with many useful options, such as: 30” Film Carriage, Roping, Top Cover Placement, Top Pressure Hold Down, Pallet Lifter, Auto Corner Board Placement, and R-Connect®.

If you are looking to increase productivity and lower TCO, the Helix 4/2 stretch wrapper is the right stretch wrapping machine for you!

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Helix 4/2 EVO

Our innovative CUBE® Technology offered on this machine combines the following four (4) key factors to successfully wrap loads & ensure that they reach your customer in “as-made” condition by maintaining proper wrapping standards.

  1. Multi-Level Variable Pre-Stretch ensures the best film economy & delivers 30-55% film savings.
  2. Multi-Level Variable Containment Force delivers optimal containment force at each level of the load.
  3. Pro-Active Corner Compensation enables you to wrap any load securely without corner damage or repetitive film breaks.
  4. Strategic Film Placement allows you to place film exactly where it has the most impact on load stability and containment.



Pre-stretch carriage with single motorization, which allows the stretch film to be pulled at fixed values up to 300% and apply up to 12 containment force values on the pallet. Optional kits are available for pre-stretch other than standard. The adjustment of the placing force on the pallet is controlled by an analog system.
The carriage is equipped with a reel h. 20″ (STD) or with the optional h. 30”.

SCSP_2 Carriage


Pre-stretch carriage with double motorization SSC independent, which allows the stretch film to be pre-stretched from the control panel, with a 150% -400% range and with control system through inverter. It is possible to apply up to 12 containment force values on the pallet. The carriage is equipped with a reel h. 20″ (STD) or with the optional h. 30”. Available carriage for reel h.  20 inch version Jumbo with diameter 15 inches. The adjustment of the application force on the pallet is controlled by a PROACTIVE system based on the CUBE TECHNOLOGY Level 1 and Level 2


EVO Pincers Clamp


Standard clamp equipped with a system for cutting the film through a hot wire. Also available in the version with double driver for independent movement of the two pincers, ideal for pallets of varying size.


Hot plate device to fix the final edge of the film during wrapping cycle on the previous turn. The film is cut by means of the hot wire. The sealing plates are mounted on springs to adapt to the surface of the product, and the sealing time can be set from the control panel.

EVO Spring Clamp


Optional system for clamping, cutting and sealing the film, which occurs without contact with the product. The device works through spring steel (Patent), with a proportional reduction of the film band and is complete with an air blower device to seal the initial edge of the film within the wrapping. The device is specifically designed to guarantee perfect finishing of the end edge of the film by electronically controlled impulse sealing on constant film thickness. The final sealing of the film takes place on a mechanical support, accurately avoiding direct contact with the product. Also available in the version with horizontal movement, mobile and liftable.

Nip and Tuck Clamp


Optional device for clamping, cutting and threading the film without sealer. The last tail of the wrapping film is inserted into the winding itself.


Vertical Pressure Platen


Pallet retaining system during wrapping which can be used with the upper covering systems (Top Inside/Top Outside) or with particularly unstable loads. Available in versions with mechanical movement by means of pantograph system or pneumatic drive.

Pallet Lifter


Pallet lifting system in the conveyor in the center of the machine with pneumatic drive or hydraulic drive, thanks to which complete wrapping of the wooden pallet is possible. This system enables you to manage wrapping of the product and pallet in an extremely flexible manner, guaranteeing maximum stability of the palletized load. The pneumatic lift has a maximum capacity of 4400 lbs., while the hydraulic system has a capacity of more than 4400 lbs.

Top Cover


Automatic system for covering the upper surface of the pallet. Available in the version Top Inside version integrated in the structure of the machine to obtain a cover against dust and water, or in the Top Outside version with independent structure, to be able to achieve a dust-proof cover.



Optional system to reduce the width of the film to a “cord” and ensure a more effective stabilization of the load.


Thanks to a special control system (patented ROBOPAC), the gripping and application devices are able to “locate” in a fully automatic way the four corners of the pallet without any manual setting or adjustment of the system.

Load Capacity
Max Load Dimensions (W X L X H)40 x 53
Machine Structure
Frame ConstructionPainted Metal
Film Delivery System
Operator Interface
Wrapping Menus16
Utility Requirements
Safety Features
CE Safety-Cat 3YES
UL 508A CompliantYES
16 Standard Wrapping Programs
16 standard wrapping menus allowyou to easily select the bestwrapping pattern for your loadsand consistently repeat in less time.
Allen Bradley Panel View Plus 603
Category 3 Safety
Color Graphic Display
Conveyor Infeed & Outfeed
Cube® "SMART Stretch Wrapping" Technology
Innovative technology that combines multi-level variable pre-stretch, multi-level variable containment force, pro-active corner compensation, and strategic film placement to successfully wrap loads & ensure that they reach your customer in as-made condition by maintaining proper wrapping standards.
Automatic Cycle Start
Automatic Film Break Alarm
30" Film Carriage
Air Conditioning
Scale Package
Self Centering Devices