Industrial gluing and sealing of cardboard boxes and packaging
Packaging arrives intact – reliable and precise gluing for every packing operation
Robatech application systems for sealing cardboard boxes, gluing primary packaging, wrap-around labelling and pallet stabilisation – for packing operations where every package must reach the customer intact.
- ExclusiveRobatech partner for the Czech Republic
- 50+ yearsin the industry
- Our owntesting centre
- 24/7service and SOS line
Selected customers from the industry
Where we help in packing and packaging
Tamper evidence – security seal
Sealing the closure with hot melt adhesive causes unmistakable damage on opening – the customer can immediately tell whether the packaging was intact. It is required in particular in pharmaceutical and food packaging.
What you're dealing with
- Open or damaged packaging during transport leads to complaints and returned goods – the cause is a weak or uneven adhesive application on the box flaps.
- Adhesive overflow outside the bond fouls the packaging and the conveyor, causes line stoppages and raises costs – precise cut-off and control of the application width are the basic conditions for a clean operation.
- Different packaging formats, product changeovers and fluctuations in line speed make it hard to maintain a constant bond quality – the application system must respond to a format change instantly, with no downtime.
How Kaletech solves it
Robatech systems apply adhesive precisely to a defined spot – with an instant start and end of application (cut-off). Whether it is sealing boxes on a fast line, dot labelling or pallet stabilisation (anti-slip gluing), every configuration is designed for the specific parameters of the line: the type of packaging, the speed, the type of adhesive and the number of application points.
For packing operations we offer both hot melt systems (box sealing, tamper evidence, palletising) and cold gluing (wrap-around labelling, application onto heat-sensitive materials). The choice of technology is determined by the type of application – both approaches are covered by Robatech electric and pneumatic application heads with industrial communication via a PLC.
The Robatech Control System (RCS) control platform communicates with a higher-level PLC via Fieldbus (Profibus, Profinet) and monitors adhesive consumption in real time – a deviation from the norm signals a problem in the bond before a faulty package leaves the line.
Do you manufacture the packaging or cardboard items yourselves? See machine gluing for packaging and cardboard manufacturers.
How it works and what technology is used
Robatech technology for gluing and sealing packaging integrates a melter or a pumping unit, a hose and an application head into a controlled unit synchronised with the production line. For hot melt applications, the adhesive is melted in a compact or high-capacity melter, carried through a heated hose and applied by an application head with precise cut-off. For cold gluing, a dosing unit pumps the dispersion from a container and the Sempre application head doses it precisely. Robatech has both variants available (hot melt and cold gluing), used according to the application – hot melt for box sealing, cold glue on the labelling carousel.
Selecting the technology and adhesive
Depending on the application, we choose hot melt or cold glue (dispersion). Hot melt for box sealing, tamper evidence and pallet stabilisation – instant setting keeps up the production pace. Cold dispersion adhesive for wrap-around labelling on glass, cans and PET – no heat stress on the label and minimal adhesive consumption per area.
Melting or pumping the adhesive
The melter (Alpha for compact applications, MultiMelt or JumboFlex for high-capacity lines) melts the hot melt granules to the working viscosity. For cold glue, a dosing unit ensures a stable, pulsation-free supply of the dispersion. In both cases the result is a constant pressure and flow at the application head – the prerequisite for a repeatable application.
Precise application with the application head
The SpeedStar Compact or Volta applies hot melt as dots or in a bead pattern onto the box flaps or the surface of the package. Sempre application heads precisely dose dispersion adhesive onto the surface of a moving label – a switching frequency of up to 500 Hz ensures a clean application even at the high speed of the labelling carousel.
Control, monitoring and cut-off
The control system (PLC or RCS) synchronises the application with the movement of the package along the line. Adhesive is applied only where it should be – a start and stop response in milliseconds eliminates overflow. Real-time monitoring of adhesive consumption alerts the operators to a deviation from the set norm before a faulty package leaves the line.
Technology used
Robatech Alpha Melter
A compact melter ideal for use in industries such as carton processing, packaging gluing and graphic arts.
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Robatech Concept Melters
Concept series equipment for melting thermoplastic adhesives, with a wide range of applications, simple operation and ex…
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SpeedStar Compact electric jetting head
The fastest electric jetting head for intermittent hot melt adhesive application. Adhesive savings of up to 50 %. Ideal…
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Volta application head
Thanks to its design, it is durable and protected against external influences with IP55 protection. With Volta you save…
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Performa – heated hose for highly precise applications
Heated hoses for hot melt adhesives have a significant influence on how reliably and precisely products are glued.
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AX Diamond jetting head
A robust jetting head for contactless bead application of low to medium viscosity thermoplastic hot melt adhesives in de…
More informationHot melt vs. cold gluing – how to decide
| Parameter | Hot melt application | Cold glue application |
|---|---|---|
| Typical applications in packing | Box sealing, tamper evidence, pallet stabilisation | Wrap-around labelling of glass, cans, PET |
| Curing time | Instant (sets within 1–3 s) | Depends on water evaporation (slower) |
| Material sensitivity to heat | Possible effect on thin films and heat-sensitive labels | Safe for all types of packaging and labels |
| Adhesive consumption | A small amount – instant setting with no need for overlap | A minimal layer on the label, precise dosing |
| Integration with the line PLC | Easy – synchronisation via RCS or Fieldbus | Easy – the pump and application head communicate with the PLC |
Real-world results
Case study: Automated gluing of carton packaging for Fatra
Automated hot melt gluing of cartons at Fatra increased the reliability, performance and efficiency of the packaging lin…
Show case study
Automatic bonding of packaging for Bematech
A leading manufacturer of shading technology increases productivity and saves on adhesive and material costs.
Show case study
Labelling of bottles with a variable number of joins
The program automatically determines the number of applied coats according to the production program.
Show case studyCustomer references
„For such a complex and fast line we needed a partner who understands not only gluing but also the real operation of a production line. Kaletech delivered exactly what we expected. We appreciate that it does not approach a project with a ‚delivered – done' attitude, but actively comes up with proposals for further improvement."
Why solve your gluing challenge with Kaletech
50+ years of industry experience
We build on the development of Swiss Robatech (since 1975) and our own practice on the Czech market since 2004.
Authorised Robatech partner
The exclusive supplier of Robatech technologies for industrial gluing.
In-house service and parts
A service team, spare parts in stock and an SOS line.
Free consultation
We will design a tailored solution and fine-tune it directly in your operation.
How the collaboration works
Inquiry and consultation
Get in touch and tell us what and where you glue. We will discuss your operation and goals with no obligation.
Application analysis
We assess the materials, the line speed and the requirements for the bond. We recommend a suitable technology and adhesive.
Design and test
We design the configuration and verify it with a test on your materials – often in our testing centre.
Installation and training
We install the system, integrate it into the line and train the operators and maintenance staff.
Service and support
We provide spare parts, preventive service and an SOS line throughout the entire operation.
Frequently asked questions
Wrap-around labelling is a technique in which the label wraps around the entire circumference of a bottle, can or PET package – from the beginning to the end of the adhesive bond. Dispersion adhesive is applied to both ends of the label: to the leading end (bonding to the package) and to the overlapping end (bonding the label to itself). The result is a strong, aesthetically clean bond with no air bubbles. Sempre application heads apply a precise amount of cold glue with no adhesive stringing, even at the high cycle rate of a labelling carousel.
Interested in a solution for gluing and sealing packaging?
Get in touch – we will assess your line (type of packaging, speed, formats) and design an application system precisely for your operation. With no obligation.
- +420 732 469 082
- info@kaletech.cz
- SOS service: +420 736 443 247