Stora Enso Oyj

Wetend Technologies Oy

Wetend Technologies Ltd.

Savcor Process Oy

Jari Räsänen

Isto Heiskanen

Ali Harlin

Tapani Penttinen

Mari Hiltunen

Kimmo Nevalainen

Jurkka Kuusipalo

Jouni Matula

Ville Ribu

Outi Kylliäinen

Niilo Pöyhönen

Antti Savolainen

Seppo Karine

Johanna Lahti

Olli Aaltonen

Jussi Matula

Olavi Imppola

Matti Vakevainen

Karri Tahkola

Panu Tanninen

Risto Laitinen

Kirsi Partti-Pellinen

Mohammad Khajeheian

Henry Lindell

Sami Matthews

Titta Lammi

Ari Rosling

Janne Pynnönen

Jaakko Hiltunen

Nina Miikki

Sami Kotkamo

Nina Ruohoniemi

Christiane Laine

Jan-Erik Nordström

Tekla Tammelin

Hanne Wikberg

Pekka Kylliainen

Antero Laitinen

Laura Kela

Tim Lindfors

Jinto Anthonykutty

Juha Linnekoski

Jyri Jarvi

Ari Johansson

Matti Hakkinen

Jukka Rautiainen

Mikko Vepsalainen

Mikko Tuominen

Ella Lindström

Timo Raisanen

Kielo Härmälä

Reetta Kaila

Anu Kettunen

Jarmo Bergholm

Kalle-Juhani Riihinen

Hanna Koskela

Martti Pulliainen

Erkki Tevä

Timo RÄISÄNEN

Mikko Touminen

Outi Kyllianen

Raino Kauppinen

Janne PYNNÖNEN

Matti VÄKEVÄINEN

Erkki Teva

The present invention relates to a web of fibrous cellulosic material derived from wood pulp, said web being suitable for three-dimensional moulding to form a packaging product, wherein the web comprises >40 wt % of soft wood chemical pulp and at least one strength enhancement agent, wherein the web has a grammage less than 400 g/m, and wherein the cellulose fibers of said soft wood chemical pulp comprise a fiber curl of >9%.

Mouldable fibrous sheet and a production method thereof

The invention relates to a method and an apparatus for deep-drawing a tray () from fiber-based sheet material (), such as polymer coated board. The apparatus comprises a female moulding tool (), which comprises a cavity () for forming the tray bottom outwardly, a male moulding tool (), which comprises a plunger plate () for forming the tray bottom inwardly, the plunger plate being movable with respect to the cavity for forming the tray, and clamps () with an interface for holding the sheet material and forming a tray rim flange. According to the invention by laterally distancing at least one of the moulding tools () from the sheet material leeway is provided for free forming of the tray side walls while wrinkling or tearing of the same is avoided. Spacer plates () may be positioned behind the plunger plate (), to adjust its position in relation to the cavity () of the female moulding tool (). The cavity may have a separate bottom plate () and spacer plates () there below, or screw means may be provided for adjusting the distance of the bottom of the cavity from the clamp interface and thereby varying the depth of the tray.

Method and apparatus for deep-drawing a tray from sheet material

The present invention relates to a method of deoxygenating tall oil pitch, yielding aliphatic and aromatic hydrocarbons. The invention even comprises turning the aliphates into polymerizable olefins by steam cracking, and turning the aromates into polymerizable terephthalic acid by oxygenation and, as necessary, rearrangement. The monomers can be used for the production of polymers of partially or completely biologic origin. According to the invention, tall oil pitch is first heated to turn it into liquid, which is then fed into a catalyst bed and catalytically deoxygenated with hydrogen. The deoxygenation catalyst is preferably a Ni&#x2014;Mo catalyst and, in addition, a cracking catalyst can be used, such as an acidic zeolite catalyst. The deoxygenated product stream is cooled down so as to obtain a liquid, which is distilled for separation of the aliphatic and aromatic hydrocarbons for use in the production of the respective monomers and finally polymers.

Methods of deoxygenating bio-based material and production of bio-based terephtalic acid and olefinic monomers

A deep-drawn paper tray made of paper material, a method and an apparatus for manufacturing the tray, and a closed product package comprising the tray. The tray having a bottom and upwardly expanding side walls around the bottom, the side walls of the tray being shaped to expand through a plurality of circumferential steps dimensioned low enough for obtaining wrinkle-free side walls for the tray. The outermost step is a flat, wrinkle-free rim flange, which enables liquid and gas proof heat-sealing of a lid to form the package. The apparatus may comprise upper and lower moulding tools with concentric movable frames for forming the tray bottom and side wall steps from paper blanks, and moulding tools may be mounted onto a rotating turret carrying a paper blank through working stations arranged along the turret circumference, to shape the tray bottom and the side wall steps at the consecutive stations.

Deep-drawn paper tray, a method and an apparatus for making it, and a tray-formed product package

The invention relates to a method and an apparatus for deep-drawing a tray () from a blank of sheet material (). The blank is provided with score lines, which determine the location of wrinkles formed in the process. The apparatus comprises a female moulding tool (), which comprises a cavity () for forming the tray bottom outwardly, a male moulding tool (), which comprises a plunger () for forming the tray bottom inwardly, the plunger being movable with respect to the cavity for forming the tray, and clamps () with an interface for holding the sheet material and forming a tray rim flange. According to the invention by laterally distancing at least one of the moulding tools () from the sheet material leeway is pro-vided for free forming so that wrinkling of the tray side walls is achieved in a controlled manner. Spacer plates () may be positioned behind the plunger (), to adjust its position in relation to the cavity () of the female moulding tool (). The cavity may have a separate bottom plate () and spacer plates () therebelow, or screw means may be provided for adjusting the distance of the bottom of the cavity from the clamp interface and thereby varying the depth of the tray.

The invention concerns a method of manufacturing paper or board, the paper or board obtained by the method, and a method of producing a tray from the board. In a fibrous stock for papermaking is incorporated an amount of polymer coated fibrous particles, which even have a foaming agent such as moisture contained therein. A web is formed from the fibrous stock on a forming fabric of a paper or board machine, followed by pressing and drying to a finished paper or board. As the paper or board is sufficiently heated the foaming agent within the particles evaporates, causing expansion and foaming of the polymer coating, which adds to malleability of the board as it is moulded into a shaped article such as a board tray. The invention even covers production of doubly coated fibrous particles for use in said methods, the inner coating layer being of a foamable polymer with a higher melt flow rate and the outer coating layer being of a non-foaming polymer of a lower melt flow rate.

Methods for making paper or board, a board tray and pulp particles coated with foamable polymer for use in the same

A method of forming an aqueous solution comprising mircrofibrillated cellulose, the method comprising the steps of providing a substantially dry composite material, comprising microfibrillated cellulose and a filler material, wherein said filler material is precipitated onto fibers or fibrils of said microfibrillated cellulose; providing an aqueous media, wherein the method further comprises the step of lowering the pH value of said aqueous media and then mixing said aqueous media with said substantially dry composite material, such that the filler material is released from said microfibrillated cellulose, thus dissolving said microfibrillated cellulose; or the step of mixing said aqueous media with said substantially dry composite material, and then lowering the pH of said mixture, such that the filler material is released from said microfibrillated cellulose, thus releasing said microfibrillated cellulose.

Drying/transportation and releasing MFC

The invention relates to a method of manufacturing a shaped tray or plate of fibrous material. The method comprises the steps of (i) providing a fibrous pulp, in which the fibres substantially consist of at least 85 wt-% of softwood fibres having an average fibre length of at least 2.0 mm and at most 15 wt-% of broke having a fibre length of about 0.05 mm to 1.0 mm, (ii) turning the pulp into a foamed suspension, (iii) supplying the foamed suspension from a headbox to a forming fabric of a board machine to form a fibrous web, (iv) drying the web to obtain a dried web having a compressibility in the thickness direction of at least 20%, and (v) including the web as a layer in a board, which is turned to said tray or plate by thermopressing or deep-drawing. The invention even covers shaped trays and plates produced by use of the method.

Shaped tray or plate of fibrous material and a method of manufacturing the same

The invention relates to methods for lowering the melt viscosity and thereby improving heat-sealability of a polyester. The invention also relates to a method for manufacturing a heat-sealed container or package from fibrous-based, polyester-coated packaging material, and a method for heat-sealing polyester. The solution according to the invention is subjecting polyester to electron beam (EB) radiation. The lowered melt viscosity allows a lower heat-sealing temperature, and permits sealing of polyester to an uncoated fibrous surface. The preferred polyester for the invention is polylactide, as such or as blended with another polyester.

Methods for lowering melt viscosity and improving heat-sealability of polyester and for manufacturing a heat-sealed container or package

The invention relates to use of polylactide (PLA) as an extruded polymer coating on paper or board intended for the production of containers and packages, which are heated in a stove or microwave oven. According to the invention a polyfunctional cross-linking agent, such as trialkyl isocyanurate (TAIC), is blended with PLA, and the extruded coating layer is subjected to cross-linking electron beam (EB) radiation. PLA may be used as such or blended with another biodegradable polyester such as polybutylene succinate (PBS). EB radiation has been found to improve adhesion of the coating to the paper or board substrate, heat-scalability of the coating, and heat-resistance of the finished containers and packages.

Method of use of polylactide and manufacturing a heat-sealed paper or board container or package

Method for producing a sterilized foam web, wherein the method comprising the steps of preparing a wet foam (), feeding the wet foam () to a head box (), distributing the wet foam by the head box (), treating the wet foam () with electron beam radiation () to immobilize and sterilize the wet foam (), receiving the electron beam treated foam on a moving wire () to form a foam web (), pressing and the foam web (), and drying the foam web ().

Method for producing a foam web

A method of deoxygenation of tall oil as well as methods for the production of aliphatic hydrocarbons and polymerizable monomers from tall oil. Sulphurous crude tall oil together with hydrogen gas is fed into a reactor comprising a catalyst bed. The oil is catalytically deoxygenated by hydrogen in the bed by use of a sulfided metal catalyst, e.g. a NiMoS catalyst. The flow exiting the reactor is cooled down and a hydrocarbon-bearing liquid phase is separated from a gas phase, followed by subjecting the liquid phase to distillation for removal of useless aromatic hydrocarbons and then to steam cracking to form a product containing olefins such as ethylene or propylene. By regulation of the deoxygenation temperature to be at least 270&#xb0; C. but less than 360&#xb0; C. the yield is rich in linear and cyclic aliphates that usefully turn to olefins in the steam cracking, while formation of napthalenes is reduced.

Methods of deoxygenation of tall oil and production of polymerizable monomers therefrom

The invention relates to a polymer-coated packaging material, a method of manufacturing the same, and products, such as a disposable drinking cup, made from the material. The packaging material comprises a fibrous base () of paper or board and an extruded polymer layer () containing a blend of (i) 0 to 25 wt-% of a branched low-density polyethylene (LDPE) with a lower melt viscosity and (ii) 75 to 90 wt-% of a linear low-density polyethylene (LLDPE) with a higher melt viscosity. The packaging material of the invention comprises multilayer coatings, e.g. an adhesive innermost and a heat-sealable outermost layer () of said blend and a vapor barrier middle layer () of at most 90 wt-% of high density polyethylene (HDPE). The layers () are brought and adhered to the fibrous base () by coextrusion. To maximize renewability of the materials HDPE and LLDPE as used for the structure are of biologic origin.

Method for manufacturing a packaging material

The present invention relates to determination of the microorganism content in material comprising cellulose within the pulp and paper industry. The material comprising cellulose is enzymatically pretreated and microorganisms are determined using PCR based technology.

Method for determination of microorganisms

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Imatra, Finland

Jari Räsänen