The invention relates to systems and techniques for manufacturing articles containing cellulosic material, a tackifier, and a binder, and related processes of making and using the cellulosic articles. In particularly exemplary embodiments, the manufactured articles are door skins, sometimes known as door facings, and doors made from the door skins. The article contains a lipophilic cellulosic material, a tackifier, and a binder.

The invention relates to systems and techniques for manufacturing articles containing cellulosic material, a tackifier, and a binder, and related processes of making and using the cellulosic articles. In particularly exemplary embodiments, the manufactured articles are door skins, sometimes known as door facings, and doors made from the door skins. The article contains a lipophilic cellulosic material, a tackifier, and a binder.

The disclosure concerns a composition for three-dimensional printing, said composition being free from polylactic acid (PLA) and includes the following components:

(a) a polysaccharide comprising a cellulose derivative and/or a lignocellulosic derivative;

(b) a pH regulator selected from at least one of the following: organic acids, inorganic acids, acid generating salts, bases, buffers,

(c) a resin selected from melamine resin and/or phenol resin, and

(d) optionally a rheology modifier selected from water and/or glycerol.

The disclosure also concerns a kit of parts for producing the described composition, a method for three-dimensional printing of the described composition and articles obtainable by said method.

The disclosure concerns a composition for three-dimensional printing, said composition being free from polylactic acid (PLA) and includes the following components:

(a) a polysaccharide comprising a cellulose derivative and/or a lignocellulosic derivative;

(b) a pH regulator selected from at least one of the following: organic acids, inorganic acids, acid generating salts, bases, buffers,

(c) a resin selected from melamine resin and/or phenol resin, and

(d) optionally a rheology modifier selected from water and/or glycerol.

The disclosure also concerns a kit of parts for producing the described composition, a method for three-dimensional printing of the described composition and articles obtainable by said method.

An adhesive composition is disclosed, and includes an aldehyde-based resin selected from the group consisting of urea-formaldehyde resins, melamine-formaldehyde resins, melamine-urea-formaldehyde resins, phenol-containing resins, and mixtures, combinations, and sub-combinations thereof, and a formaldehyde scavenger selected from the group consisting of chitosan, nano-chitosan, functionalized chitosan, and mixtures, combinations, and sub-combinations thereof.

The invention relates to systems and techniques for manufacturing articles containing cellulosic material, a tackifier, and a binder, and related processes of making and using the cellulosic articles. In particularly exemplary embodiments, the manufactured articles are door skins, sometimes known as door facings, and doors made from the door skins. The article contains a lipophilic cellulosic material, a tackifier, and a binder.

The present invention relates to a method for manufacturing a wet glued wood article, as well as a wet glued article obtainable by said method and also uses of a wet glued article, wherein the method comprises the following steps: a) providing two actively never-dried or slightly dried wood pieces comprising at least one surface each which has a superficial layer having a thickness of least 2-3 wood cells; b) drying said surfaces of said wood pieces so that the moisture content of said superficial layer is below the fibre saturation point, providing a dried surface on each of the said wood pieces; c) applying a gluing agent on said dried surface of one of the wood pieces, thus providing a glue surface; d) bringing the dried surfaces together so that said glue surface touches the dried surface on the other wood piece, thus providing a wet glued wood article.

The present invention relates to a method for manufacturing a wet glued wood article, as well as a wet glued article obtainable by said method and also uses of a wet glued article, wherein the method comprises the following steps: a) providing two actively never-dried or slightly dried wood pieces comprising at least one surface each which has a superficial layer having a thickness of least 2-3 wood cells; b) drying said surfaces of said wood pieces so that the moisture content of said superficial layer is below the fibre saturation point, providing a dried surface on each of the said wood pieces; c) applying a gluing agent on said dried surface of one of the wood pieces, thus providing a glue surface; d) bringing the dried surfaces together so that said glue surface touches the dried surface on the other wood piece, thus providing a wet glued wood article.

A temperature-curable aminoplastic adhesive resin that is a (poly)-condensate of: (i) at least one aminoplast-forming chemical; (ii) 5-hydroxymethylfurfural (5-HMF), its oligomers and/or its isomers; and, (iii) at the least one second (poly-)condensable chemical. Composite boards, such as wood-based panels, can be produced using this adhesive resin. The production of the aminoplastic adhesive resin includes the reaction of urea with 5-hydroxymethylfurfural (5-HMF) and glyoxal. The adhesive resin can be used in the production of wood-based panels such as particleboards, fiberboards and products usually called, among others, plywood and/or blockboards.

A temperature-curable aminoplastic adhesive resin that is a (poly)-condensate of: (i) at least one aminoplast-forming chemical; (ii) 5-hydroxymethylfurfural (5-HMF), its oligomers and/or its isomers; and, (iii) at the least one second (poly-)condensable chemical. Composite boards, such as wood-based panels, can be produced using this adhesive resin. The production of the aminoplastic adhesive resin includes the reaction of urea with 5-hydroxymethylfurfural (5-HMF) and glyoxal. The adhesive resin can be used in the production of wood-based panels such as particleboards, fiberboards and products usually called, among others, plywood and/or blockboards.