The present disclosure relates to a hollow board 1 with first and second main surface layers 3, 5. A plurality of distance elements connecting the first and second main surface layers and maintain a predetermined distance there between. The main surface layers include at least a layer of high-density fiber, HDF, board, and a plurality of distance elements are distributed in the space between the main surface layers, and at least some comprise at least one elongate HDF board strip 15 which is oriented such that its longitudinal edges interconnect the first and second main surface layers 3, 5. The HDF boards of the surface layers and of the at least some of the distance elements comprise wood particles bonded by a resin including an isocyanate, such as methylene diphenyl di-isocyanate, MDI.

The invention relates to a method for foaming chipboard with tubes including a board body interspersed by tubes and having an upper and a lower face includes the steps of providing a corresponding chipboard with tubes, defining one or more machining regions on the upper and/or lower face of the chipboard with tubes, machining the machining regions.

In order to provide a method for foaming chipboard with tubes and a chipboard with tubes having foamed tubes that can be used in a simple, flexible, and cost-effective manner while also being highly robust, a foam-forming material is introduced at least in portions of at least one of the above-mentioned tubes in the machining region in order to locally reduce the difference in density between the tubes and the board body. The invention further relates to the use of a device for foaming tubes of a chipboard with tubes.

The present invention relates to a method of manufacturing a cellulose product having a flat or non-flat product shape by a pressure moulding apparatus comprising a forming mould. The forming mould has a forming surface defining said product shape, The method comprises the steps of:

arranging a cellulose blank containing less than 45 weight percent water in said forming mould; heating said cellulose blank to a forming temperature in the range of 100° C. to 200° C.; and pressing said cellulose blank by means of said forming mould with a forming pressure acting on the cellulose blank across said forming surface, said forming pressure being in the range of 1 MPa to 100 MPa.

The present invention relates to a method of manufacturing a cellulose product having a flat or non-flat product shape by a pressure moulding apparatus comprising a forming mould. The forming mould has a forming surface defining said product shape, The method comprises the steps of:

arranging a cellulose blank containing less than 45 weight percent water in said forming mould; heating said cellulose blank to a forming temperature in the range of 100° C. to 200° C.; and pressing said cellulose blank by means of said forming mould with a forming pressure acting on the cellulose blank across said forming surface, said forming pressure being in the range of 1 MPa to 100 MPa.

A method for manufacturing a cellulose product, comprising the steps: dry forming a cellulose blank in a dry forming unit; arranging the cellulose blank in a forming mould; heating the cellulose blank to a forming temperature in the range of 100° C. to 200° C.; and pressing the cellulose blank in the forming mould with a forming pressure of at least 1 MPa.

A method for manufacturing a cellulose product, comprising the steps: dry forming a cellulose blank in a dry forming unit; arranging the cellulose blank in a forming mould; heating the cellulose blank to a forming temperature in the range of 100° C. to 200° C.; and pressing the cellulose blank in the forming mould with a forming pressure of at least 1 MPa.

The present disclosure describes aqueous adhesives comprising, inter alia, adhesives and saccharide fatty acid esters, particularly unsaturated fatty acid esters (uSFAE), including aqueous adhesive compositions containing such a combination and where such aqueous adhesive compositions show improved water resistance compared to adhesives which do not contain said uSFAE. Articles of manufacture comprising said aqueous adhesive compositions are also described.

A multi-cavity forming mould system for forming a plurality of discrete three-dimensional cellulose products from an air-formed cellulose blank structure. The forming mould system includes a first mould part and a second mould part arranged for cooperating with each other during forming of the cellulose products. The first mould part includes a plurality of first forming elements and the second mould part comprises a plurality of corresponding second forming elements movably arranged in relation to a base structure of the second mould part. The forming mould system is configured for establishing a plurality of forming cavities for the cellulose blank structure between each first forming element and corresponding second forming element during formation of the cellulose products. Each second forming element is arranged for interacting with a pressure member arranged in the base structure, where the pressure member is configured for establishing a forming pressure in each forming cavity onto the cellulose blank structure during formation of the cellulose products.

A multi-cavity forming mould system for forming a plurality of discrete three-dimensional cellulose products from an air-formed cellulose blank structure. The forming mould system includes a first mould part and a second mould part arranged for cooperating with each other during forming of the cellulose products. The first mould part includes a plurality of first forming elements and the second mould part comprises a plurality of corresponding second forming elements movably arranged in relation to a base structure of the second mould part. The forming mould system is configured for establishing a plurality of forming cavities for the cellulose blank structure between each first forming element and corresponding second forming element during formation of the cellulose products. Each second forming element is arranged for interacting with a pressure member arranged in the base structure, where the pressure member is configured for establishing a forming pressure in each forming cavity onto the cellulose blank structure during formation of the cellulose products.

A method for manufacturing a cellulose product, comprising the steps: dry forming a cellulose blank in a dry forming unit; arranging the cellulose blank in a forming mould; heating the cellulose blank to a forming temperature in the range of 100° C. to 200° C.; and pressing the cellulose blank in the forming mould with a forming pressure of at least 1 MPa.