Typical mistakes in the checking of net`s strength

Sometimes, to demonstrate the strength of the net, you stretch it to the sides. In the end, this leads to tearing the net apart. But such a process is wrong in itself.

The weaving force of the net is covered in the “working direction”, that is, along the heavier threads that go around the bale. Lightweight zigzag threads do not provide strength, so the ease of breaking them does not show anything about the reliability of the binding material. Demonstration of tearing the net with bare hands along longitudinal lines is called fiction.

Bale netwrap is made from heavier yarns that run along the entire length of the roll like “guides” and thinner or zigzag yarns. The strength of the packaging material depends on the longitudinal thicker polyethylene threads. Thinner threads only serve to hold the warp thread guides in place.


The longitudinal threads of the hay knitting net work simultaneously, ensuring its overall strength on the bale. So, the turnovers are counted with the use of the longitudinal threads. It is important to correctly adjust the baler for the crop to be packed and periodically check the wrapping quality. This will ensure long-term preservation of a perfectly flat bale.

How the zig zag pattern of thin threads affects the strength of the hay knitting net

Transverse thin threads are arranged in a bale net in a zigzag pattern. In this case, the pattern can be very different. For example, you can see two options like this:

You should be aware that no matter how your hay knitting net will “pattern” the longitudinal thin threads, it will not affect its final strength. The reason for this is simple – thin threads are not responsible for strength, but only keep the main heavy longitudinal threads in place. So adding such zigzag patterns does not provide any visible benefits.


If you read this and the two previous articles on our blog (about the coefficient between weight and strength, as well as about coloured threads in a mesh), then you will find out that you should not get attached to such parameters when choosing a bale net wrap such as:

  • weight in g/m;
  • colour;
  • the weaving of longitudinal threads;
  • price of the roll.

None of these factors is indicative of the high strength or reliability of the packaging material. Choose the right one for the needs of your farm, taking into account the crops to be packed and the characteristics of the equipment.

We are confident in the quality of the Polypak hay knitting net. It fully complies with the declared technical parameters, including length and width, and retains its properties throughout the entire storage period. If you have any questions, please contact the managers of our company.