complete straw bale de-stringing system

Remove the twine every time
– Automatic bale de-stringing system.

Strings and twine around the bale must be removed before any process and are often done manually.


However, at larger installations, the de-stringing process should be automized with a de-stringer system ensuring:


· Achieved savings and the possibility to upskill your employees to more challenging tasks, increasing efficiency.
· Minimum space requirements – Compared to a long feeding conveyor, if a bridge crane feeds the installation.
· Collection of twine and strings in bulk is 30-50 cm long. The twine and strings are disposed of through a chute, making them easier to collect and deliver to recycling.
· High capacity – Up to 30 large square bales per hour.
· Easy maintenance because of the slow spinning rotors.
· Low power consumption
· Easy to operate

The process starts with loading conveyors passing the straw bales into the de-stringer system.  


As the straw bales pass, the twines are cut underneath the bale, and the threads are collected in bulk.

Most commonly, six strings around the large square bales add up to 40m.


The latest version of large square bales has eight strings around to allow for high compression.


In this case, there is 53m of string/twine. The strings, made from PVC, around one large square bale, weigh between 500 and 700 grams.

It works with four individually controlled short bale conveyors to create one long row of straw bales without any gaps. Once the strings are removed, the bale usually consists of 12 slices.


Four short conveyors ensure that the latest bale catches up with the others.


Complete straw bale de-stringing system

Efficient & professional

biomass handling

The goal for Processbio is to take out the complexity of the front-end biomass material handling

for the customer by taking full responsibility for the process from entrance of the biomass to infeed

actual process (boiler - reactor - thermal treatment), enabling the customer to focus entirely on their core competencies.


Service & Assistance

Processbio offers 24/7/365 service assistance with a Processbio Service Agreement through

the service organization of the company, ensuring optimal uptime on the production line and application

knowledge from the professional technicians of Processbio.

Contact our specialists

John Thrane Nielsen


Tel: +45 20 44 07 60

Hans Bossen


Tel: +45 23 30 38 70

Jørgen Lyngsø

SALES MANAGER                             USA

Tel: +1-586-255-7075

Christian Weinreich


Tel: +45 27 87 36 16