How are water-fed poles produced?
> Why are water-fed poles so sturdy?
> Composite materials ensure high material quality
> How fibre and resin systems are turned into a pole
> Combination of crosswise and lengthwise fibres for flexibility and stability
Most of you know them. Most of you have held them before: water-fed nLite poles by UNGER. But how are they produced? clean magazine can enlighten you.
The secret of pole manufacturing lies in the material: a composite material. What does this mean?
Composite materials combine the desirable properties of several materials.
Reinforced concrete is a composite material that consists of the components concrete and steel. Concrete alone has high compressive strength, but low tensile strength. Steel, on the other hand, has very high tensile strength. Combining the two materials results in the composite material reinforced concrete, which is characterised by both high compressive strength and high tensile strength.
The composite material that is used for the poles is a combination of fibres and resin systems. In combination, a very strong and rigid material results. The composite material is thus lighter, more resistant and more durable than the “pure” raw material.
That’s how it turns into a pole
Manufacturing the poles is effected using the so-called pullwinding process. This is a special manufacturing technique, which entails guiding resin-drenched fibres through a tubular system, heating them, and shaping them into a pole. By means of a pulling device, the pole can be removed from the system, and then cut to the desired length.
What are the advantages of this manufacturing system?
The pullwinding technology allows for the exact adjustment of the number of lengthwise and crosswise fibres. In this way, the pole can be precisely adapted to the desired product characteristics.
Lengthwise fibres contribute the strength and rigidity that are require in the longitudinal direction. Crosswise fibres secure the tubular structure, protect against breakage and support minimal bending - even at full extension of the pole.
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