Polyester strapping heads

A polyester (PET) strapping head is the assembly that performs the key cycle of the strapping process: feeding & collecting the strap, tensioning, cutting, and sealing, thus ensuring that the strapped product is stable.

In a production process, the strapping head is crucial for achieving repeatability in strapping, reducing incidents, streamlining the process, minimizing labor, and maintaining production with consistent performance.

The strap used is polyester, which makes it easier to handle and safer for the operator, preventing possible personal injury.

PET SAIZAR Strapping Head: design, sealing and strap control

At SAIZAR, we work with an exclusive strapping head model that allows products to be strapped with polyester strap from 16 mm to 32 mm wide. In order to work with different strap widths, a few parts of the strapping head need to be replaced.

We design, manufacture and test the strapping heads entirely at our facilities, which allows us to adapt the solution to the actual process and working conditions of each customer.

Our strapping heads are pneumatic. The tensioning force to be applied and even the movement speeds of the strap can be adjusted via the HMI depending on the type of product to be strapped.

The strapping heads can work with polyester strapping from any strapping supplier, provided that certain technical requirements of the strapping are met in order to guarantee the correct operation of the strapping head.

Cabezales para fleje de poliéster de SAIZAR SL
Polyester strapping head
3D del cabezal para fleje de poliéster de SAIZAR SL
3D Design

Sealed by Friction/vibration (adjustable)

In our PET heads, sealing is performed using the friction-vibration method, and both the sealing time and cooling time can be adjusted depending on the type and size of strapping used.

Intelligent system: position control and misalignment correction

Our strapping heads incorporate an intelligent strapping system: we know the position of the strap at all times and can automatically resolve any misalignments during the strapping process. In other words, if any anomalies occur during the strap feeding and collection process, the strapping head detects them and attempts to resolve the problem automatically without the need for operator intervention.

Ranges and technical data (16, 19, 25 and 32 mm)

  CASP 16 CASP 19 CASP 25 CASP 32
Dimensions
Length
500 mm
Width
750 mm
Height
850 mm
Strap width 16 mm 19 mm 25 mm 32 mm
Strap thickness 0,60 mm / 1,52 mm 0,80 mm / 1,52 mm
Sealing Friction - vibration
Sealing resistance Approx. 80% Steel strap breaking load
Collection speed/Feeding speed 1,5 m/s
Tensioning force 4500 N 5000 N 5500 N 6000 N
Working pressure 6 bar.
Electro valve pressure 24 V C.C
Weight 180 kg 190 kg

Download technical data sheet

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Benefits in production and packaging quality

Consistent seals:
thanks to friction/vibration sealing and adjustable parameters

Tension adapted:
to your product, with tension ranges by width (up to 6000N)

Fewer incidents:
due to strap position control and automatic correction of misalignments

Stable working pace:
without the need for operator support

How to chose your PET strapping head

Strap width and thickness:
16, 19, 25, or 32 mm and corresponding thickness.

Type of product:
to strap, format, dimensions, weight and quantity of straps to apply

Required type of strapping:
whether for strapping the product transversally, longitudinally, radially, circumferentially or perimetrically

Tension target:
and handling/transport conditions after strapping has been carried out

Environment and maintenance:
accessibility, wear and tear, and ease of intervention

Integration:
into the Strapping Machine or line (strapping head position and layout).

Contact our technical department for a customised solution

Contact

Integration into automatic strapping machines and packaging lines

We integrate the head into an automatic strapping machine or packaging line, together with a strap dispenser, strap accumulator, metal structure, head movement system, strap arch & guides, guards and equipment automation.

In Automatic Strapping Projects, it is common to work with widths such as 16/19/25/32 mm depending on the application and the different customer requirements.

Strap compatibility, support, and spare parts

To facilitate your operations, we can work with the strap of any supplier, provided that it meets the technical requirements necessary to ensure the proper functioning of the system.

If you need operational continuity, after-sales technical Support matter: in addition to during the project, we accompany you with technical service and spare part supply, to maintain system performance over time.

Frequently asked questions

What strip widths does your PET head support?

We work with PET strap of 16 mm to 32 mm of width. The usual sizes are of 16mm, 19mm,  25mm and 32mm.

Friction–vibration sealing.

Yes, we adjust the sealing time, as well as the cooling time, according to the Technical characteristics of the strap to be used.

Approximately 75-80% of the breaking load of the strap, depending on its quality.

It depends on the width and thickness: 4500 / 5000 / 5500 / 6000 N.

We control the position of the strap and we can automatically correct misalignments or abnormal situations during the strapping process.

We work with 1,5 m/s.

6 bar working pressure and 24 V C.C electro valve.

Yes, as long as it meets the technical requirements for proper operation.

Product (type and dimensions), width of strap, type of strapping required for the product, desired type of seal, cadence and integration conditions in your machine/line.

When the temperature of the product to be strapped is below 70ºC, polyester strap can be used, but when the temperature of the product is higher, polyester strapping cannot be used; steel strapping must be used instead.

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