Stora Enso Oyj

Teknologian Tutkimuskeskus Vtt Oy

Paptic Ltd

Upm-kymmene Corporation

Luonnonvarakeskus

Tuomo Hjelt

Karita Kinnunen

Isto Heiskanen

Ali Harlin

Tuomas Mustonen

Esa Torniainen

Jani Lehmonen

Hans-Peter Hentze

Jaakko Hiltunen

Karita Kinnunen-Raudaskoski

Kirsi Immonen

Antti Ojala

Hannu Minkkinen

Antti Korpela

Kalle Ilmari Nättinen

Kari Jokinen

Juha Näkkilä

Liisa Särkkä

Risto Tahvonen

Erkki Hellen

Lisa Wikström

Antti Oksanen

Petri Jetsu

Ari Erkkilä

Jenni Sievanen

John Kettle

Artem Kulachenko

Jukka Ketoja

Eila Turunen

Asko Sneck

Ari Erkkila

According to an example aspect of the present invention, there is provided a method for foam assisted drying of nano- and microfibrillated cellulose, which is easily up-scalable and cost-efficient.

Foam assisted drying process of nano- and microfibrillated cellulose

Fiber sheets, structures comprising the fiber sheets and the use of the sheets. The invention further relates to biodegradable and/or recyclable products comprising the fiber sheets, useful in replacing non-biodegradable products.

Fiber sheets and structures comprising fiber sheets

The invention relates to growing medium structures comprisingmoss, to a foam-laid method for their manufacture and to the use thereof in horticulture, landscaping and forestry applications.

Growing medium structures based onmoss and method for the manufacture thereof

The invention relates to fiber sheets, to structures comprising the fiber sheets and to the use of the sheets. The invention further relates to biodegradable and/or recyclable products comprising the fiber sheets, useful in replacing non-biodegradable products.

The present invention concerns a process for producing a thermoformable porous web using a mixture of cellulosic fibers and one or more thermoplastic materials, particularly by foam forming said mixture into a composite foam, and applying the foam into one or more layers on a support to obtain a porous pre-form web. The thus produced porous composite web can be further processed by compression molding to give a rigid high-strength composite structure, which is suitable for use in producing, e.g. panels or plates, packages or hygiene products, insulators or filters, or printed intelligence, electronics or microcellulose products.

Production of high performance thermoplastic composites

A hydrophobically sized fibrous web layer, preparation of a fibrous web or a fiber-based coating, a multilayer board product having at least a middle layer formed of said fibrous web, as well as use of a heat-sensitive surfactant for said methods and products, whereby microfibrillated cellulose (MFC) and hydrophobic size are brought to a foam with water and the heat-sensitive surfactant, the foam is supplied to a forming fabric of a paper or board machine, dewatered by suction of air through the forming fabric, and dried to a web product. Alternatively the foam may be supplied onto a premade fibrous web and dried to form a coating layer. The hydrophilic functionality of the surfactant contained in the web may be destroyed by heating. Pulp of a greater fiber length, such as CTMP, may be included, to provide improved wet and dry tensile strength for the paper and board products.

Hydrophobically sized fibrous web and a method for the preparation of a sized web layer

The invention relates to a fibrous web product such as paper, and a method for the preparation of such fibrous web. According to the method microfibrillated cellulose (MFC) together with a pulp of a greater fiber length, such as chemithermomechanical pulp (CTMP), are mixed with a foam of water and a sur-factant, the foam is supplied to a forming fabric of a paper or board machine, dewatered by suction of air through the forming fabric, and dried to the final web product. The method brings a high bulk in combination with a high Scott bond value, to provide improved wet and dry tensile strength for the paper and board products.

Fibrous web of paper or board and method of making the same

The invention relates to a method for manufacturing nanostructured paper or board and a novel paper or board. The method comprises providing a liquid suspension of nanocellulose-containing material, forming a web from the suspension, and drying the web in order to form paper or board. According to the invention the water content of the suspension from which the web is formed is 50% or less by weight of liquids. By means of the invention, energy consumption of paper manufacturing can be significantly reduced.

Method of manufacturing paper and products obtained by the method

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Vtt, Finland

Tuomo Hjelt