A germ-repellent paper product contains a paper substrate and a germ-repellent overprint varnish. The germ-repellent overprint varnish contains a varnish and a germ-repellent agent. The germ-repellent overprint varnish is coated onto the paper substrate to form a germ-repellent paper product. A method for manufacturing such a germ-repellent paper product is also provided.

The disclosure relates to a method for producing a coated packaging material, in particular a laminate, wherein at least the following steps are carried out: a) providing a cellulose-containing substrate, b) coating at least one surface region of the substrate with a curable composition and curing the composition, forming a primer layer, and c) generating a metal-containing layer on at least one surface region of the primer layer. According to the disclosure, the composition used in step b) contains at least one ionically polymerizable monomer that is cured via ionic polymerization. The disclosure also relates to a packaging material including a cellulose-containing substrate having a layer system, wherein the layer system has at least one primer layer and a metal-containing layer, wherein the primer layer includes/is at least one polymer cured via ionic polymerization, and a packaging produced from at least one packaging material of this type.

The present invention relates to a sizing agent composition comprising starch, lignosulfonate and poly(alkyl acrylate), poly(alkyl (meth)acrylate), a mixture of poly(alkyl acrylate) and poly(alkyl methacrylate) or a copolymer of alkyl acrylate and alkyl (meth)acrylate. The present invention further relates to a method for preparing the sizing agent composition, and use of the sizing agent composition for sizing paper, paper products or board.

The present invention relates to a sizing agent composition comprising starch, lignosulfonate and poly(alkyl acrylate), poly(alkyl (meth)acrylate), a mixture of poly(alkyl acrylate) and poly(alkyl methacrylate) or a copolymer of alkyl acrylate and alkyl (meth)acrylate. The present invention further relates to a method for preparing the sizing agent composition, and use of the sizing agent composition for sizing paper, paper products or board.

It is an object of the present invention to provide a composite sheet, which achieves all of water repellency, water resistance, transparency and mechanical strength. The present invention relates to a sheet having a fiber layer and a coating layer on the fiber layer, wherein the fiber layer comprises ultrafine cellulose fibers having a fiber width of 1000 nm or less in an amount of 60% by mass or more, the haze of the sheet is 20% or less, and the water contact angle of the surface of the sheet on the side of the coating layer which is measured 30 seconds after completion of the dropping of distilled water is 70 degrees or more.

Methods for treating paperboard or paper media are provided. In these methods, a composition is applied to the surface of the paperboard or paper media. Paperboards or paper media treated in accordance with any of the methods achieved increased strength under both dry and wet testing methodologies as compared with untreated paperboards and paper media of the same basis weight.

Methods for treating paperboard or paper media are provided. In these methods, a composition is applied to the surface of the paperboard or paper media. Paperboards or paper media treated in accordance with any of the methods achieved increased strength under both dry and wet testing methodologies as compared with untreated paperboards and paper media of the same basis weight.

The method according to the invention consists in that the carrier is covered with at least two varnished layers, the two layers being made of electron curable varnishes, which may contain an additive increasing adhesion between the layers, and if the layer which is applied first, counting from the side of the carrier, containing an interlayer adhesion increasing additive, is irradiated with an excimer lamp and then pre-polymerized by electron radiation or UV light, then after applying the second layer also containing an interlayer adhesion increasing additive, the combined layers are cured by electron radiation or UV light. On the other hand, if the layer applied first, counting from the carrier side, is only pre-polymerized by electron radiation or UV light, then after applying the second layer, which then contains an additive increasing adhesion between the layers, it is subjected to irradiation by an excimer lamp and then the combined layers are cured by electron radiation or UV light. As a result, it is possible to obtain a product whose layer refined with excimer lamp and the layer only cured with electron radiation or UV light, are bound together regardless of the order of their occurrence.

The present invention discloses a preparation method and recycling method for degradable and recyclable paper plastics with water resistance and high-strength. By coating cyclic carbonate and amine compounds on paper, these compounds penetrate the paper's fiber structure, followed by curing treatment, resulting in a recyclable, degradable, and reprocessed paper plastic material with water resistance and high-strength. This method involves coating only cyclic carbonate and amines onto the paper, which, after heating, yields the paper plastic. The invention offers versatility, enhancing various paper types with improved mechanical properties, temperature resistance, water resistance, and solvent resistance while maintaining degradation capability. The paper plastic exhibits excellent self-healing, plasticity, degradation, and reprocessing properties. The process method is straightforward and user-friendly, making it suitable for industrial-scale production.

The present invention discloses a preparation method and recycling method for degradable and recyclable paper plastics with water resistance and high-strength. By coating cyclic carbonate and amine compounds on paper, these compounds penetrate the paper's fiber structure, followed by curing treatment, resulting in a recyclable, degradable, and reprocessed paper plastic material with water resistance and high-strength. This method involves coating only cyclic carbonate and amines onto the paper, which, after heating, yields the paper plastic. The invention offers versatility, enhancing various paper types with improved mechanical properties, temperature resistance, water resistance, and solvent resistance while maintaining degradation capability. The paper plastic exhibits excellent self-healing, plasticity, degradation, and reprocessing properties. The process method is straightforward and user-friendly, making it suitable for industrial-scale production.