Pulping
The best-fit technology for each resource

In order to avoid breaking the rejects into too small pieces, it is important for the pulping process to find a balance between the main parameters, such as pulping consistency, temperature, retention time and chemical additives. A low amount of rejects in the pulp makes the downstream process easier and more efficient to operate.
The right machine for every task
Benefits | Process | |
IntensaDrum |
High production Easy operation |
Drum pulping for recycled fibers |
IntensaPulper |
Flexibility Low energy demand |
Pulping of all kinds of paper and fiber material |
Contaminex |
High reliability |
Pulper cleaning |
IntensaMaXX |
High efficiency High reliability |
Pulper cleaning |
IntensaScreenDrum |
Low fiber loss |
Reject washing |
CompactPulper |
Low energy demand Small footprint |
Broke pulping for paper machine |
Ragger |
High reliability |
Pulper cleaning |
Product range
IntensaDrum

Outstandingly reliable and efficient pulping
Voith's IntensaDrum drum pulper consists of one pulping section and one screening section. In the pulping zone, special lifting bars lift the pulp suspension from the bottom and almost to the top. From there, the suspension falls back onto the drum shell. This process is very gentle since there is no rotor to crush or cut the contaminants.
In the sorting zone of IntensaDrum, the suspension is lifted in the same way, and water is added via spray pipes to wash out the fibers through the perforated drum shell. In this way, an efficient separation of fibers and contaminants already takes place inside the pulping process, without damaging the contaminants.
The simple and basic principle of IntensaDrum leads to low maintenance and increased runtimes. Due to its high consistency range, IntensaDrum has a low specific energy consumption, and the lack of wear parts gives a constant accept quality.
Discover IntensaDrum via Augmented Reality
To discover the IntensaDrum pulping drum and its multiple features in Augmented Reality, download the app to your tablet or smartphone and print out the IntensaDrum brochure below. Scan the picture on the front page of the brochure with the camera of your mobile device, and enjoy the interactive functions.

The BlueLine product range from Voith comprises modern machines and products for stock preparation that are characterized above all through the efficient use of energy and other raw materials and by gentle treatment of the fibers.
Discover the innovation bluelineBlueLine Advantages
Lower Maintenance Cost
Enhanced Safety
IntensaPulper

Efficient pulping of recovered paper and pulp bales in stock preparation
The Intensa technology from Voith offers quick and intensive mixing of the suspension in the pulper. The flow-optimized pulper vat, in combination with the eccentrically arranged rotor, generates a perfect turbulence. As a result, quicker mixing of the suspension and accelerated bale intake are achieved. The double-coned bottom of IntensaPulper creates a flow-optimized transition from the pulper bottom to the cylindrical trough wall.
IntensaPulper IP-R is specifically designed for the pulping of recovered paper at a high pulping consistency. The rotor configuration ensures a reliable ragger operation, and the number of ragger breaks can be reduced to once a month. The double-coned bottom combined with the baffle urges the coarse heavy contaminants towards the reject discharge allowing a reliable removal in the Junkomat.
IntensaPulper IP-V enables efficient pulping of virgin fibers, clean recovered paper or broke in batch or continuous mode. A bale breaker divides the bales and thus contributes to an increase in production capacity. A trap for heavy parts ensures the separation of wires.
IntensaPulper from Voith achieves a significant increase in production capacity, while keeping the pulping quality consistently high. Significant energy savings of up to 25% are obtained in comparison to conventional low consistency pulpers, thus high cost savings can be achieved.

Environment. Quality. Reliability.
The BlueLine product range from Voith comprises modern machines and products for stock preparation that are characterized above all through the efficient use of energy and other raw materials and by gentle treatment of the fibers.
Discover the innovation BlueLineBlueLine Advantages
Higher Runability
Lower Energy Consumption
Contaminex

Pumping of highly contaminated stock flows
Featuring large nozzle diameters and a free-flow impeller, Contaminex is designed for plug-free pumping of stock flows with a high proportion of contaminants. The impeller has a long service life thanks to its hard facing. A frequency converter offers the possibility for optimized pump speed and reduced energy consumption for intermittent pumping operation.
Your benefits with Contaminex
- High capacity and maximum efficiency due to frequency converter and variable rotor speed
- Robust operation and high reliability thanks to low sensitivity for air and reject contents
- Easy maintenance thanks to simple design and long service-life due to wear resistant rotor
IntensaMaXX

Reliable reject discharge without spinnings
IntensaMaXX can be used in continuous low consistency (LC) pulping with recovered paper grades containing contaminants or in high consistency (HC) pulping as a dumping machine after the batch HC pulper.

The BlueLine product range from Voith comprises modern machines and products for stock preparation that are characterized above all through the efficient use of energy and other raw materials and by gentle treatment of the fibers.
Discover the innovation bluelineBlueLine Advantages
Higher Runability
Lower Maintenance Cost
IntensaScreenDrum

Efficient washing for minimum fiber loss
The hood of the IntensaScreenDrum has been redesigned to minimize water vapor and droplets forming on pipes and handrails, keeping the surrounding area clean and safer for the operators.
The reject is purged by intermittent flushing from IntensaMaXX to the IntesaScreenDrum, where it is washed to recover all useable fibers. The internal 3D water spray ensures that all the plastic reject is washed efficiently. By adjusting the water jet, one can optimize the retention time for reject washing, depending on specific conditions for each raw material, system and customer.

The BlueLine product range from Voith comprises modern machines and products for stock preparation that are characterized above all through the efficient use of energy and other raw materials and by gentle treatment of the fibers.
Discover the innovation bluelineBlueLine Advantages
Reduced Fiber Loss
Enhanced Safety
CompactPulper

High operating efficiency with broke pulping
An effective agitation with low vat height, together with an intensive rotor contact results in a higher circulation rate providing a more intensive pulping with simultaneous low energy consumption. The CompactPulper is available with one to four pulping units per pulper vat and with a width of up to 12 meters. Each pulping unit provides an electrical power of between 55 and 900 kW.
Your benefits
- Low space requirement thanks to slim and compact design
- Low energy consumption
- Up to 40% more pulper working width for the same installed power
- Easy assembly
Ragger

Effectively removing spinning contaminants
The wires are necessary for the transportation of paper bales, but expensive to remove before the pulper itself, especially for production lines with high production. The Ragger is a simple tool to remove the wires during pulping in order to make sure no steel wires are broken down by the rotor and cause excessive wear on valves and pumps.
Combined with the rotor from the IntensaPulper the number of broken ragger ropes can be reduced to a minimum. Strong ribs on the pulling wheel prevent slippage. The direct drive equipped with an electrical brake in combination with fixed wheel positions guarantee maximum contact.
Equipped with a 1.1 kW motor, it has 1.6 tons of tractive force. Forward and backward transportation of the ragger is possible with push-buttons. The high gear-ratio allows an intermittent speed control from 10 to 300 m/h.
Your benefits
- Improved safety for personnel and machines thanks to automatic operation and easy adjustment
- Robust and reliable removal of spinning material from pulper thanks to maximum profile contact
- Forward and reverse transport possibilities for perfect positioning
Your contact – How can we help you?
Engineered for success

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At Voith, the success of the customer takes center stage. Service means delivering customized service solutions and utilizing our full expertise to help our customers reach their goals.