Holmen-arkiv - Treesearch

Efficient Washing of Paper grade pulp in the kraft process

The project contributes to strengthened Swedish competitiveness through its expected research results and new fundamental knowledge for the development of an efficient pulp washing process and thus through an increased pace of innovation in the transition to a circular economy. After pulping the wood chips, the resulting pulp fibres and cooking liquor are separated in a …

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The kinetics of lignin extraction in oxygen delignification.

The current and future environmental challenges call for improved and more sustainable processes in the pulp industry. To contribute to a sustainable and competitive Swedish bioeconomy the pulp industry needs to increase efficiency without increasing the use of hazardous chemicals. Oxygen delignification is a unit process that has been used in pulp mill fiberlines between …

The kinetics of lignin extraction in oxygen delignification. Läs mer »

Multi scale modeling of the delignification kinetics during kraft cooking

The kraft process is today the dominant industrial technology for the production of pulp from wood.In this process, wood chips are boiled with chemicals in order to dissolve lignin, hemicellulose andextractives. The process itself contains several complex mass transport mechanisms, where thechemicals are to be transported into the wood chip and then further into the …

Multi scale modeling of the delignification kinetics during kraft cooking Läs mer »

Controlling product characteristics on board machine utilization process data

Quality on any board and paper products is dependent on being able to maintain low variability within product characteristics. A common problem is that these characteristics are measured cannot be measured online in the production, and is the time resolution will therefor be very low. The product characteristics will be dependent on the process characteristics, where …

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Macro- and microscopic deformability of fiber networks made from softwood fibres

Holmen is a major Swedish producer of paper and board products. Most of these products are based on softwood fibres. During converting of the products, they are plastically deformed in folding, creasing or embossing operations. This deformation occurs both in a macro and microscale. It is therefore important to understand the influence of the raw …

Macro- and microscopic deformability of fiber networks made from softwood fibres Läs mer »

Terpene based materials

The project focuses on the polymerization of biopolymers using molecular building blocks from renewable sources, mainly using on monomers containing cycling subunits.

EcoSys – Eco-effective processes and systems

The main purpose of EcoSys is to develop and implement energy-saving technologies at production units producing mechanical pulp with high wood yield (> 90%) and thus also demonstrate and further improve the environmental and sustainability aspects of mechanical pulp manufacturing. Mechanical pulp is durable and resource efficient since it is manufactured with a very high …

EcoSys – Eco-effective processes and systems Läs mer »

EcoMat – Ecofriendly sustainable strong materials

The aim of the project is to develop knowledge on how to modify paper manufacturing and pulp manufacturing process to produce fossil-free functional packaging materials. Use of plastic constitutes an increasing threat to our nature and future. Plastic materials are a big environmental hazard. Large amounts end up in the oceans where the plastic decomposes …

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FORIC – Forest as a Resource Industrial Research College

FORIC (Forest as a resource industrial research college) is our industrial research school. Program manager is Prof. Per Engstrand. Coordinator for the research school is Dr. Olof Björkqvist. FORIC is financed by the Knowledge Foundation and a part of our research environment Transformative Technologies at Mid Sweden University. FORIC is a graduate school in close …

FORIC – Forest as a Resource Industrial Research College Läs mer »

Green wood adhesives based on side-streams from the pulp industry

In this project we propose to explore the use of side-streams originating from the pulp industry as adhesive binders for wood-based materials. The proposed project, aiming at developing novel, formaldehyde-free, adhesives from renewable resources, brings together experts in polymer/adhesive/wood chemistry with experts on forest/wood products and has the ability to gain novel, fundamental knowledge while …

Green wood adhesives based on side-streams from the pulp industry Läs mer »

Project partners: Holmen