Film shrink wrappers with in-line infeed



The LSK SF ERGON series is composed of automatic shrink wrapping machines to pack plastic, metal, cardboard or glass containers in film only.

The packers from the LSK SF ERGON series achieve an output rate up to 30 packs per minute in single lane, for containers with diameter between 40 and 200 mm, according to the product to be handled. The pack collations can vary according to the containers shape, capacity and size; the most requested collations are: 2x2, 3x2, 4x3 and 6x4.

The machines from the LSK SF ERGON series are equipped with a mechanical product grouping system and are supplied with new counters provided with a handcrank for the management of the format changeover, ensuring more precise adjustments to handle the format.

Speed (PPM)30



1In the machine infeed zone, an oscillating unscrambler accurately lines up the loose containers carried by a conveyor belt featuring low-friction chains made of thermoplastic material. In the pack formation zone, the containers are clustered in the required format through a pneumatic device operating in alternate motion.


2A cutting blade driven by a direct drive brushless motorisation controls the film unwinding, while a rack system ensures its constant tesnioning


3The film is wrapped around the container batch and overlapped at the base of the pack; the height of the wrapper is adjustable to ensure flexibility and manufacture a wide range of formats


4The pack enters the shrinking tunnel, equipped with side panels that can be disassembled; as a result, it is much more easier to access the tunnel for the maintenance operations

  • Machine bearing frame made of sand-blasted and powder-painted steel
  • Sliding protection doors in anodised aluminium featuring a rounded shape which let all the motors (featuring low energy consumption) be placed externally if compared to the mechanical groups they activate. The closing system of doors is equipped with a slow-down device, which accompanies the door smoothly in its final phase of closure
  • Absence of gearboxes and prevailing employment of ICOS brushless motors equipped with digital servo-driver integrated into the motor
  • For life lubricated bearings
  • Infeed conveyor with chains made of thermoplastic material featuring low friction coefficient and a motorized system of oscillating laning guides
  • Compact knife group with film cutting blade driven by a direct drive brushless motorization
  • The shrink tunnel features state-of-the-art technical solutions that enables the energy consumption reduction and the maximum environmental compatibility of the processes. Thanks to the precise analysis of thermodynamic phenomena generated by the shrink process, the tunnel distributes hot air flows in an efficient and homogeneous way on the pack, thus ensuring the excellent quality of the final pack. Shrink resistances are positioned on the side walls of the tunnel.
  • Heat-shrinking tunnel with forced air ventilation
  • Interactive 7'' touchscreen display (15'' model mounted on an arm sliding on rail available as an option)

Compact structure and competitive prices

LSK SF ERGON machines have a reduced size, since they are equipped with neither the cardboard magazine nor the cardboard climb, thus representing the ideal solution for the customers who do not possess large plants. Moreover, the price of the LSK SF ERGON shrink wrapper is very competitive, despite the high-tech solutions and the use of very reliable components.

Modular design

SMI machines are designed according to advanced principles of module assembly and feature interchangeable mechanical and electronic components, which ensure a reduction of the down-times during technical interventions or programmed maintenance and the optimization of the use of spare parts on stock.

Operational flexibility

These machines can package a wide range of products in several pack collations, so as to effectively meet the end user's current and future requirements. Moreover, each machine can be equipped with additional devices, which increase its basic functions and ensure a high level of customization of the final package.

Motors directly connected to the drive shafts

SMI machines do not include gearboxes: the motors are directly connected to the drive shafts. The consequent advantage is the reduction of maintenance, energy consumption and noise.

Easy and cost-saving maintenance

The rounded safety doors enable to have more space inside the machine and thus to install motors externally compared to the mechanical units they drive, which allows the operator to easily perform the activities connected to the plant maintenance.

Constant film tensioning

Film reel placed in the lower part of the machine. The film unwinding is controlled by the cutting blade, while the film constant tensioning is ensured thanks to a system equipped with tensioning spring

Precise and automatic film cut

Film-cutting unit equipped with direct drive motorization that allows to easily carry out motor maintenance and reduce maintenance operations.

User-friendly man-machine interface

The POSYC® control panel, fixed or sliding on a boom running the whole length of the machine (depending on the machine model), enables even less expert operators to easily and effectively run the packer, thanks to an intuitive interface, a touch screen display and diagnosis functions and real-time technical support available on the POSYC®.

Images are for illustrative purposes and data are not binding, as they have to be confirmed by SMI according to the machine user's production conditions and technical specifications.