An aqueous biopolymer dispersion composition comprising: a biopolymer selected from the group consisting of: polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), polylactic acid (PLA), poly(3-hydroxybutyrate) (PHB), polycaprolactone (PCL), poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH); poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), polyhydroxyalkanoate (PHA), and mixtures thereof; a stabilising agent selected from the group consisting of: polyvinyl alcohol, fatty alcohol ethoxylates, ethylene oxide/propylene oxide (EO/PO) block copolymers, salts of fatty acids and mixtures thereof; a rheology modifier; a cross linking agent; optional further ingredients; and water.

A method is provided for coating a fibrous web, in particular a fibrous web comprising nanocellulose fibres. The method includes steps of applying a coating agent to a textured surface region of a textured substrate, applying a fibre furnish or a wet fibrous web onto the coated textured surface region of the textured substrate, optionally dewatering to provide a wet fibrous web, and drying said wet fibrous web such that at least a portion of said coating agent is transferred to said fibrous web. The method provides a coated fibrous web with improved barrier properties.

A method is provided for coating a fibrous web, in particular a fibrous web comprising nanocellulose fibres. The method includes steps of applying a coating agent to a textured surface region of a textured substrate, applying a fibre furnish or a wet fibrous web onto the coated textured surface region of the textured substrate, optionally dewatering to provide a wet fibrous web, and drying said wet fibrous web such that at least a portion of said coating agent is transferred to said fibrous web. The method provides a coated fibrous web with improved barrier properties.

Paper products, which could be made into bags, wrappers, receptacles, cups, boxes, and the like, are disclosed. The paper is coated with a water-resistant and oil resistant coating. In the case of forming paper bags, pouches, and the lie, the adhesives that could be used to bond the coated side in juxtaposition that can form a high bonding power can be any latex-base modifier copolymer, or modified loctite by heat sealing or the use of styrene ester copolymer are also disclosed.

Paper products, which could be made into bags, wrappers, receptacles, cups, boxes, and the like, are disclosed. The paper is coated with a water-resistant and oil resistant coating. In the case of forming paper bags, pouches, and the lie, the adhesives that could be used to bond the coated side in juxtaposition that can form a high bonding power can be any latex-base modifier copolymer, or modified loctite by heat sealing or the use of styrene ester copolymer are also disclosed.

A biodegradable aqueous mixture for coating substrates is disclosed, which includes from about 35 to about 75 weight percent water and from about 25 to about 65 weight percent solids. The solids in turn are made up of from about 40 to about 99 weight percent polyhydroxyalkanoates based on the total dry weight of the solids. Moreover, the polyhydroxyalkanoates are in the form of polyhydroxyalkanoate particles having a moisture content of no less than about 1% by weight prior to mixing with the water and a Dv (90) particle size of no more than about 10 microns, as determined using ISO 8130-13:2019.

A biodegradable aqueous mixture for coating substrates is disclosed, which includes from about 35 to about 75 weight percent water and from about 25 to about 65 weight percent solids. The solids in turn are made up of from about 40 to about 99 weight percent polyhydroxyalkanoates based on the total dry weight of the solids. Moreover, the polyhydroxyalkanoates are in the form of polyhydroxyalkanoate particles having a moisture content of no less than about 1% by weight prior to mixing with the water and a Dv (90) particle size of no more than about 10 microns, as determined using ISO 8130-13:2019.

An object of the present invention is to provide a print product which has a printed region where printing with ultraviolet laser is applied and which is excellent in viewability, a method for producing a print product by irradiation with ultraviolet laser, and a printing medium for laser printing, for use in the print product and the method for producing a print product. The print product of the present invention has a printed region comprising discolored titanium oxide in at least one portion of a sheet medium selected from the group consisting of paper or a film having a printable region comprising titanium oxide; titanium oxide is filled in the sheet medium; a titanium oxide content in the printable region in the sheet medium is 1.0% by mass or more, pulp constituting the paper has a length-weighted average fiber length and an average fiber width in specified ranges, and the paper has a basis weight of 20 g/m.sup.2 or more, when the sheet medium is the paper; a titanium oxide content in the printable region in the sheet medium is 0.3% by mass or more, the film has a thickness of 15 μm or more, and a resin constituting the film comprises a specified resin, when the sheet medium is the film; and a ratio between a Raman intensity assigned to titanium oxide in the printed region and a Raman intensity assigned to titanium oxide in a non-printed region is 0.70 or less.

An object is to provide a barrier material which not only is high in degree of biomass and small in amount of CO.sub.2 emitted, but also has biodegradability and simultaneously has excellent gas barrier property and water vapor barrier property, and which can be suitably used particularly in packaging applications for foods or the like, such as a packaging material, a bag, a paper container, a cardboard box, and a cup. A solution to be provided is a barrier material having an oxygen permeability of 10 ml/m.sup.2.Math.day.Math.atm or less at a temperature of 23° C. and a relative humidity of 0%, and having a total degree of biomass of 50% or more.

A coating composition is described that can be completely biodegradable and well suited for use in laminating films to substrates. The coating composition contains a biodegradable polymer, such as a polyvinyl alcohol polymer. The coating composition can be applied to a biodegradable film and then adhered to a substrate, such as a paper substrate.