Film shrink wrappers with in-line infeed

LSK ERGON Series

LSK 30 ERGON - Film shrink wrappers up to 30 ppm

The LSK ERGON series is composed of automatic shrink wrapping machines to pack plastic, metal, cardboard or glass containers. Depending on the model chosen, they can make packs in film only, cardboard pad + film, cardboard tray, cardboard tray + film.

LSK ERGON series packers achieve an output rate up to 40 packs per minute in single lane, according to the machine model and the type of 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.

These shrink wrappers are equipped with a mechanical product grouping system and are supplied with an in-line or a 90° infeed conveyor, depending on the customer’s exigencies. The change-over is manual.

LSK 30 FLSK 30 PLSK 30 T
Speed (PPM)303030
Packaging TypeShrink filmPad + FilmTray + film
Tray only
Lanes111

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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.


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2In P and T models, a corrugated cardboard pad or blank is picked from the blanks magazine by an alternate motion picker composed of a group of vacuum suckers. The pad or the blank moves along the blank climb and gently places itself underneath the group of products in transit with the long side leading.


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3In the tray former, special mechanical devices fold the blank’s front and rear flaps. The side flaps are sprayed with hot melt glue and then folded, thus forming the tray.


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4The unwinding of the film reel, placed in the lower part of the machine, is controlled by a progressive brake, which ensures the film constant tension. Before the pack enters the shrinking tunnel, the film is wrapped around the container batch and overlapped at the base of the pack.


  • 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
  • Cardboard magazine situated beneath the infeed conveyor in an easily accessible position (P and T models)
  • Alternate motion cardboard blank picker, equipped with suckers
  • 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)

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 reels placed in the lower part of the machine with film unwinding controlled by a progressive brake and constant film tensioning ensured by a system provided with a 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®.

Data provided are not binding, as they have to be confirmed by SMI according to the machine user's production conditions and technical specifications.