16results about "Bleaching agents addition" patented technology

The present technology relates to fluff pulp having improved odor control and methods of making such fluff pulp. A fluff pulp is provided that includes bleached kraft fibers and a copper ion content of from about 0.2 ppm to about 50 ppm by weight of the bleached kraft fibers. The bleached kraft fibers include a length-weighted average fiber length of at least about 2 mm, a copper number of less than about 7, a carboxyl content of greater than about 3.5 meq / 100 grams; an ISO brightness of at least 80; and a viscosity of from about 2 cps to about 9 cps.

An article including a first fiber derived from a first natural source and a second fiber derived from a fruit. A method of manufacturing an article may include combining a first and second fiber to form a fiber mixture, where the first and second fibers are obtained from discrete materials, and where at least one of the fibers is derived from an edible fruit of a plant. The article may be formed from the fiber mixture.

The application discloses a preparation method of a nano TiO2 composite fluorescent whitening agent and relates to the technical field of fluorescent whitening agents. The method comprises the following steps: firstly, one-time condensation is carried out on cyanuric chloride and 4,4'-diamino-stilbene-2,2'-disulfonic acid; secondly, secondary condensation is carried out on diethanolamine, and quaternary ammonium is formed by using epichlorohydrin in the secondary condensation process; finally, tertiary condensation is carried out on amino nanoparticles, so that the nano TiO2 composite fluorescent whitening agent is obtained. The nano TiO2 composite fluorescent whitening agent prepared by the application has the characteristics of good ultraviolet aging resistance and water solubility.

Provided is toilet paper which is excellent in thickness feeling and water disintegrability, has sufficient softness, gives a sense of security for human bodies during use, and is environmentally friendly. Toilet paper has three or four plies. The basis weight is 12.5 to 15.5 g / m2 per ply. 80 to 100 mass% of fiber is softwood kraft pulp that is subjected to oxygen pulping and is not bleached with chlorine. The toilet paper contains a cationic fatty acid amide-based softener, and has a paper thickness of 120 to 150 µm per ply, a paper thickness of 400 to 600 µm as a whole of the toilet paper, and a water disintegrability of 10 seconds or less.

The invention provides a degradable paper material which comprises the following components in parts by weight: 60-85 parts of bagasse, 10-25 parts of bamboo fiber, 5-15 parts of sodium alginate, 5-10 parts of starch glue, 5-10 parts of nano cellulose and 5-15 parts of a functional aid, wherein the functional additive further comprises 5-10 parts of degradable wax, 2-5 parts of a toughening agent, 2-5 parts of an antioxidant and 2-5 parts of a bleaching agent. The preparation process comprises the following steps: steam explosion of bagasse, fermentation saccharification and desugaring, preparation of paper pulp, mixing to form raw paper stock, and finally hot press molding of the degradable paper material. The paper material is suitable for packaging paper meal boxes, realizes waterproof and oil-resistant functions through component and process optimization, maintains natural degradability at the same time, overcomes the defects of high cost and low recovery rate of traditional film spraying, and meets environmental protection requirements.

A method for producing sanitary pulp is provided. Also provided are sanitary pulps, uses of sanitary pulps in the production of paper, boards, molded fibrous articles or other fiber-based articles comprising the sanitary pulps.

The invention relates to a method for reducing bacterial endospores in an aqueous fibre suspension comprising recycled cellulosic fibres, wherein the fibre suspension has an original endospore amount, preferably of ≥10 000 CFU / ml. The method comprises adjusting the pH of the fibre suspension to a pH value of ≤6.5, adjusting the oxidation-reduction potential (ORP) of the fibre suspension to an ORP value of ≥200 mV with a first oxidizing agent, and introducing an amount of performic acid as a second oxidizing agent to the fibre suspension for reducing the bacterial endospores to an endospore amount of ≤1000 CFU / ml.

The application provides a degradable paper pulp molded product and a preparation method thereof, and comprises the following raw materials in mass fractions: waste paper pulp suspension 50-55 parts, cellulose 25-30 parts, liquor of enzyme hydrolysis of distiller's grains 10-15 parts, modified filler 6-10 parts, waterproof agent 5-7 parts, retention aid 0.03-0.07 parts, and bleaching agent 1-2 parts. The specific waste paper pulp suspension, cellulose, liquor of enzyme hydrolysis of distiller's grains and modified filler are used as raw materials, and the raw materials interact with each other and synergistically, so that the comprehensive performance of the degradable paper pulp molded product is improved.

There is provided a process for producing hygienized pulp. There is also provided hygienized pulp, use of the hygienized pulp in production of paper, board, molded fiber article or other fiber based articles comprising the hygienized pulp.

The present invention relates to a method for reducing bacterial endospores in an aqueous fiber suspension containing recycled cellulosic fibers, the fiber suspension preferably having an original endospore load of 10,000 CFU / ml or more. The method includes adjusting the pH of the fiber suspension to a pH value of 6.5 or less, adjusting the oxidation-reduction potential (ORP) of the fiber suspension to an ORP value of 200 mV or more using a first oxidizing agent, and introducing an amount of performic acid as a second oxidizing agent into the fiber suspension to reduce the bacterial endospores to an endospore load of 1,000 CFU / ml or less.

The invention relates to a method for reducing bacterial endospores in an aqueous fibre suspension comprising recycled cellulosic fibres, wherein the fibre suspension has an original endospore amount, preferably of ≥10 000 CFU / ml. The method comprises adjusting the pH of the fibre suspension to a pH value of ≤6.5, adjusting the oxidation-reduction potential (ORP) of the fibre suspension to an ORP value of ≥200 mV with a first oxidizing agent, and introducing an amount of performic acid as a second oxidizing agent to the fibre suspension for reducing the bacterial endospores to an endospore amount of ≤1000 CFU / ml.

The invention relates to a method for reducing bacterial endospores in an aqueous fibre suspension comprising recycled cellulosic fibres, wherein the fibre suspension has an original endospore amount, preferably of ≥10 000 CFU / ml. The method comprises adjusting the pH of the fibre suspension to a pH value of ≤6.5, adjusting the oxidation-reduction potential (ORP) of the fibre suspension to an ORP value of ≥200 mV with a first oxidizing agent, and introducing an amount of performic acid as a second oxidizing agent to the fibre suspension for reducing the bacterial endospores to an endospore amount of ≤1000 CFU / ml.

Disclosed is a method for improving fiber softness of high yield pulp, including a high yield pulp; the method comprises: treating the high yield pulp with ozone; and treating with cellulase; the disclosure offers the following advantages: The high yield pulp in the present disclosure is sequentially treated with ozone and cellulase. Removal of lignin on the surface with ozone increases the softness of the fiber and loosens the fiber structure. Therefore, treating the fiber with ozone can open a "channel" for the entry of cellulase. Then the cellulase allows water molecules to enter the fiber, and the distance between fiber macromolecule chains increases, which causes the fiber to deform with reduced stiffness, thereby improving the softness. Therefore, by treating with cellulase based on the pretreatment of high-yield pulp with ozone, the present disclosure increases the accessibility of cellulase and fiber. Besides, ozone as a green agent can improve the softness of the fiber without or with little pollution to the environment.