A method for decorating a natural leather comprising the following steps: a) holding by vacuum suction the natural leather with its corium side to an air-permeable support onto a vacuum support of an inkjet printer; and b) inkjet printing a decorative image on the natural leather wherein the air-permeable support is partly covered by said natural leather. The air-permeable support comprises a fibrous layer in contact with the corium side of the natural leather.

The invention relates to a dark, flat element, preferably a plastic, lacquer coating or fiber material, having reduced density, low heat conductivity and low solar absorption. The flat element has a relatively high reflection infrared range of the electromagnetic spectrum reduce heating by sunlight in the near infrared dark tinting in the visible range. Low density conductivity are obtained inter alia by inserting in the near in order to area despite and low heat light filling materials into the flat element. Said flat element can be used in places where surfaces are dark tinted for aesthetic or technical reasons but should not heat up in sunlight and should give off little heat when touched by hand or by other parts of the body. Other areas of application include surfaces which should have a heat insulating effect in addition to the above-mentioned characteristics.

A method of antibacterial and antiviral surface treatment of flexible cover sheet materials includes: providing a flexible cover sheet substrate; depositing at least one lower support layer on the upper surface of the substrate; providing an antibacterial and antiviral formulation comprising a liquid active sanitizing composition dispersed in a solvent containing a polymer-based solution; depositing the formulation on at least one lower support layer to form an upper antibacterial and antiviral active layer; heating the cover substrate to cause evaporation of the solvent of an upper active layer. The active sanitizing composition contains silver chloride and solid-state titanium dioxide of nanometric size and is intended, to inhibit proliferation of bacterial and viral pathogens on the surface of the substrate, while keeping the properties of the materials thereof unaltered.

Provided are an apparatus for modifying textile products and leather products and a method for modifying textile products and leather products suitable for modifying textile products and leather products. The apparatus for modifying textile products and leather products includes a storage tub having an internal space that stores the textile products and/or the leather products, and a spray section that sprays a processing liquid containing a functional substance along with a gas toward the textile products and/or the leather products in the internal space of the storage tub, and the spray section includes a two-fluid nozzle.

A leather finishing agent that can enhance the mechanical properties and ultraviolet resistance of leather and a preparation method thereof are disclosed that relate to the field of leather additives. It was prepared by using polyphenol as raw material, hexamethylene tetramine as auxiliary agent, and a protonic acid as solvent, then heating and adding water for hydrolysis and dispersion. The method has the advantages of low production cost, simple process, high preparation efficiency, green production process and environmental protection. The leather finishing agent can be used in the finishing section after leather tanning. After finishing, the mechanical properties of the leather were significantly enhanced, and its UV resistance was also significantly improved.

Disclosed are a leather odor removal composition, a method of manufacturing leather with reduced odor using the same, and leather manufactured through the method. The method of reducing leather odor may include using a composition including a filler and a softening mixture.

A method for producing a multilayer laminar product includes the operations of providing a laminar support, covering a first face of the laminar support with a first covering layer in a polymer resin and consolidating, at least partially, the covering layer. The method further envisages providing, above the first covering layer, a laminar element free of any protective film. The method further envisages pushing an embossed surface against the first covering layer with interposition of the laminar element and causing the polymerization of the first covering layer.

A process for providing a water repellent substrate comprising: providing a dispersion in a liquid of discrete-length microfibers comprising a material adapted to be fluid under the processing conditions to be used; applying the dispersion to the substrate; optionally removing liquid from the microfibers and substrate or allowing the liquid to dry; and subjecting the microfibers to processing conditions under which the material is at least partly fluid, such that the microfibers deform to provide adhesion of microfibers with other microfibers, adhesion of the microfibers with the substrate or a mixture of adhesion with other microfibers and with the substrate.

A method of antibacterial and antiviral surface treatment of flexible cover sheet materials includes: providing a flexible cover sheet substrate; depositing at least one lower support layer on the upper surface of the substrate; providing an antibacterial and antiviral formulation comprising a liquid active sanitizing composition dispersed in a solvent containing a polymer-based solution; depositing the formulation on at least one lower support layer to form an upper antibacterial and antiviral active layer; heating the cover substrate to cause evaporation of the solvent of an upper active layer. The active sanitizing composition contains silver chloride and solid-state titanium dioxide of nanometric size and is intended, to inhibit proliferation of bacterial and viral pathogens on the surface of the substrate, while keeping the properties of the materials thereof unaltered.

The present invention provides aqueous composition comprising a multi-stage acrylic emulsion polymer having a first stage polymer of from 0.5 to 4 wt. %, based on the total weight of monomers used to make the first stage polymer, of a copolymerized carboxylic acid or salt group containing monomer, and having 10 to 30 wt. %, on total solids of the multi-stage acrylic emulsion polymer, of a second stage polymer of from 3 to 15 wt. % of a copolymerized hydroxyl group containing monomer, the first stage polymer having a glass transition temperature (Tg) by dynamic mechanical analysis (DMA) of less than 10 C. and the second stage polymer having a Tg (DMA) of greater than 80 C.; and (ii) from 25 to 75 wt. %, based on the total solids weight of the multi-stage acrylic polymer, of a polyurethane.