A method of making an absorbent structure including mixing ultra-high molecular weight (UHMW) glyoxalated polyvinylamide adducts (GPVM) and/or high molecular weight (HMW), glyoxalated polyacrylamide and/or high cationic charge glyoxalated polyacrylamide (GPAM) copolymers and high molecular weight (HMW) anionic polyacrylamide (APAM) with the furnish during stock preparation of a wet laid papermaking process.

The present disclosure describes acyl halide liquid dispersions and tunable methods of treating cellulosic materials with compositions that provide increased hydrophobicity and/or lipophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for reacting acyl halides with and binding of saccharide fatty acid esters on cellulosic materials, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, lipophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired.

The present disclosure describes acyl halide liquid dispersions and tunable methods of treating cellulosic materials with compositions that provide increased hydrophobicity and/or lipophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for reacting acyl halides with and binding of saccharide fatty acid esters on cellulosic materials, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, lipophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired.

An object of the present invention is to provide a paper for total heat exchange element, which has both of the heat transfer property and the moisture permeation property and is also excellent in the gas barrier property, and the present invention relates to a paper for total heat exchange element including a base paper containing a beaten natural pulp and a hygroscopic agent applied to the base paper, wherein a ratio of a fine fraction having a fiber length of 0.05 mm or less in the beaten natural pulp is from 10 to 25%.

A method of making paper and paperboard products, including absorbent structures, is disclosed. The method includes mixing ultra-high molecular weight (UHMW) glyoxalated polyvinylamide (GPVM) adducts and high molecular weight (HMW) anionic polyacrylamide (APAM) with the furnish during stock preparation of a wet laid papermaking process. High wet strength paper and paperboard products are also disclosed.

A method of making paper and paperboard products, including absorbent structures, is disclosed. The method includes mixing ultra-high molecular weight (UHMW) glyoxalated polyvinylamide (GPVM) adducts and high molecular weight (HMW) anionic polyacrylamide (APAM) with the furnish during stock preparation of a wet laid papermaking process. High wet strength paper and paperboard products are also disclosed.

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 invention relates to a machine for chromatogenous grafting treatment of a scrolling substrate (S) having a hydroxylated face (Fh), comprising: an application device (3) of a grafting reagent on the hydroxylated face (Fh) of the substrate, a heating roller (4) for the development of the grafting reaction on the hydroxylated face (Fh) of the substrate, said roller (4) being provided with a bar-end system (5a, 5b) for applying a face of the substrate (S) against said heating roller (4), an extraction device (6) of the hydrochloric acid produced during the grafting reaction, an application device (7) of an air knife on the treated face of the substrate for eliminating the residual grafting reagent.
The invention also relates to a chromatogenous grafting process used in said machine.

The invention relates to a machine for chromatogenous grafting treatment of a scrolling substrate (S) having a hydroxylated face (Fh), comprising: an application device (3) of a grafting reagent on the hydroxylated face (Fh) of the substrate, a heating roller (4) for the development of the grafting reaction on the hydroxylated face (Fh) of the substrate, said roller (4) being provided with a bar-end system (5a, 5b) for applying a face of the substrate (S) against said heating roller (4), an extraction device (6) of the hydrochloric acid produced during the grafting reaction, an application device (7) of an air knife on the treated face of the substrate for eliminating the residual grafting reagent.
The invention also relates to a chromatogenous grafting process used in said machine.

In order to absorb a small amount of liquid, to prevent an absorbent article from being disintegrated by the absorbed liquid, and to prevent piping of a toilet from being clogged even if the absorbent article is flushed into a flush toilet, the absorbent article includes a pulp layer containing a crushed pulp or fibers mainly containing a crushed pulp, and the pulp layer has a water repellent surface layer portion formed by applying a water repellent agent to at least one surface layer portion.