• All production machines operate with calibrated metering systems, which are checked and verified, according to controlled procedures.
• Roll length is regularly measured and checked on a roll ‘un-winding unit, to verify the accuracy of the metering equipment.
• ALL Tama netwrap complies with the German DLG standard as well as the American ASABE standard.

Netwrap construction

Netwrap Strength
The strength of Netwrap is all in ‘Machine Direction – meaning that the thicker FRANZE tapes hold the expansion pressure of the bale.

The thinner SHUSS tapes do not support the expansion pressure of the bale; they only maintain the correct spacing of the FRANZE tapes. This can be demonstrated in this way – If the thinner SHUSS tapes are cut from the netwrap on the bale, the bale will remain intact.

 

Bale formation

It is important that the bale shape is uniform, and flat across its surface. Un-even shaped bales will cause the Netwrap to be under greater pressure.

If some of the Netwrap is ON THE INSIDE of the bale, it will create numerous problems:-

• Bale diameter will increase
• Netwrap may become damaged when bale is ejected
• Bale will not be secured fully as Netwrap is not holding the bale fully
• With fewer layers of Netwrap on the BALE SURFACE, the Netwrap may not be able to withhold the bale pressure and cause bales to burst open.

Bale damage

It is important that the bale comes out of the baler immediately that the tailgate is opened, to avoid any damage to the Netwrap on the bale surface caused by the spinning rollers in the chamber.

This is a common problem with any baler that has rollers in the bale chamber and on ALL types of Netwrap.

CAUSE

1. The bale is too big and dense, and is stuck in the baler
2. The bale is not able to turn easily because the chamber side walls are not shiny enough
3. The baler is not at the correct angle relative to the tractor, and the bale cannot eject easily

SOLUTIONS

1. Reduce RPM or dis-engage PTO to the baler, which will reduce the friction of the rollers against the bale surface
2. Ensure that the baler is aligned correctly relative to the tractor, to allow the bale to come out of the baler easier

Crop type

Dry, cereal crop creates more pressure on the Netwrap than a grass Hay or Silage bale

A bigger diameter bale gives MORE PRESSURE on the net and will require MORE turns of net on the bale.

Correct amount of Netwrap on the bale

It is important that the correct amount of net is applied to the bale, which can vary
depending upon a number of factors

1. Crop Type
2. Bale diameter
3. Bale handling method
4. How many times bale will be handled

It is also important to be sure that the amount of netwrap selected by the baler-monitor, in the tractor cab, is equal to the actual number of wraps applied to the surface of the bale. Many times, the amount of Netwrap on the bale surface is not what is programmed.

It is important that the correct number of wraps of Netwrap is applied to the bale, depending upon the recommended application for the particular crop.

For best baling results, it is recommended to follow this general guide.
The numbers are MINIMUM recommended layers of netwrap, on the whole surface of the bale.

At least one more extra wrap of net is recommended when used in extreme conditions,
such as:

• High baler density settings
• Very short or dry crops
• Very hot temperature
• Multiple handling of the bale
• High UV conditions
• Stony fields
• Long term outside storage

!A combination of several extreme conditions may require a further increase in wraps.

These recommendations are provided as a guide. If using standard or generic Netwrap, an increase of one wrap is likely necessary to secure the bale.

Additional recommendations before and during baling:

• Check that the ends of the cardboard core are free to turn in the net box.
• Check and clean any snagging points in the baler, net feed tray, belts or ejection ramp, which may tear the net.
• During baling, load crop into the bale chamber evenly, proceeding from side to side.
• After bale ejection, ensure bale is clear of tail-gate before closing.
• Check there is no crop between layers of net on the completed bale.

All round balers require the same basic parameters to operate successfully with Netwrap

1. Feeding the Netwrap into the baler
2. Tension the Netwrap when binding the bale
3. Spread the Netwrap across the width of the bale
4. Cut the Netwrap at the end of the binding cycle

Feeding system

Most balers have a system of rubber and steel rollers, with adjusting settings at each side.
It is important that both sides are adjusted equally, providing full and uniform feeding pressure between the rollers.

A simple check can be made to make sure the rollers are adjusted correctly and are fully parallel. Place a single sheet of paper between the rollers and turn rollers to pull the paper between.

• If the rollers are gripping tightly, pulling the paper out will slowly make the rollers turn.
• Repeat this across the width of the rollers to ensure the tension to pull the paper out is the same across the entire width.
• If the paper can pull out easier at one side than the other, adjust the rollers accordingly