293results about "Corrosion-inhibiting/anti-oxidant agent addition" patented technology

Tipping paper is prepared from the following raw materials in parts by weight: 60-70 parts of softwood pulp, 100-120 parts of hardwood pulp, 2-3 parts of trimethoxy(methyl)silane, 3-4 parts of triethoxyvinylsilane, 1-2 parts of sodium metasilicate, 1-2 parts of ethanol, 2-3 parts of polyvinyl acetate emulsion, 1-2 parts of sodium carbonate, 1-2 parts of an anti-oxidation agent 168, 3-4 parts of meerschaum powder, 2-3 parts of vermiculite powder, 1-2 parts of sodium tripolyphosphate, 1-2 parts of sodium carboxymethylcellulose, 1-2 parts of sodium persulfate and 1-2 parts of grape seed oil. The technological effects comprise that by adding the anti-oxidation agent into the raw materials, the tipping paper is increased in yellowing resistance, and also is substantially prolonged in storage time; and also, by adding ester materials into the raw materials and through cross-linking polymerization, the toughness and the flexibility of the tipping paper are increased, also the tipping paper is improved in water resistance and wet resistance, and a paper sheet has good lip sticking resistance.

The invention relates to a method for manufacturing regenerated bamboo fiber in the chemical fiber manufacturing, concretely selecting market- sold low-grade bamboo pulp with polymerization degree greater than 1000 as raw material, making depolymerization by irradiation of high energy radial, crushing the processed bamboo pulp and dissolving in the N-methyl morpholine oxide water solution, and obtaining raw spinning liquor; the pressurizing the raw spinning liquor and filtering by prefilter, extruding the filtrate by spinneret at 70-110 deg.C, solidifying and shaping in the N-methyl morpholine oxide water solution, and drip-washing, and finally making filaments and short fibers of various standards by corresponding routine processes. And it largely reduces production cost and reduces environmental pollution and retains more features of the original bamboo fiber.

The invention therefore comprises a security substrate ( 11 ) comprising a fibrous substrate and a security device ( 10 ) The security device ( 10 ) comprises an at least partially light transmissive polymeric carrier layer bearing a first security feature and the substrate being provided with a second security feature. The first and second security features are formed and located relative to each other such that, when one side of the security substrate ( 11 ) is viewed in transmitted light the first and second security features visually combine to form a first composite image, which is not seen in reflected light.

The invention relates to a preparation method for sustained-release type volatile rust preventive paper. According to the invention, a halloysite nanotube of a hollow structure is used as a carrier, a volatile antirust agent is adhered on the surface of the carrier and loaded in the cavity of the carrier in virtue of strong adsorption ability of surfaces of the particles of the halloysite nanotube and the cavity structure, and a polyelectrolyte is used for coating, thereby obtaining a halloysite nanotube-volatile antirust agent compound; the halloysite nanotube-volatile antirust agent compound is compounded with a polymer emulsion, modified starch and the like, an obtained compound coats the surface of paper, and drying and press polish are carried out so as to obtain the volatile rust preventive paper with a sustained-release function. Since the volatile antirust agent is adhered on the surface of the halloysite nanotube and loaded in the cavity of the halloysite nanotube and coated by the polyelectrolyte, the release of the volatile antirust agent is controlled, so antirust time of the rust preventive paper is greatly increased; heat capacity of the volatile antirust agent is improved, so loss of the volatile antirust agent during preparation of the rust preventive paper is greatly reduced.

The invention provides a copy paper preparation which can avoid depositing adhesive in the pulping process, wherein the invention adds anti-deposit material in present pulping process that adds talcum powder into pulping process, adds the compound of poly-sodium acrylate and acroleic acid-maleic anhydride polymer in the pulp preparation, adds cation polyacrylamide into screened pulp to avoid depositing adhesive.

The invention provides acid free paper special for the historic preservation, consisting of plant pulp fiber, an aggressive gas adsorbing agent, a humidity adjusting agent, a pH buffering agent and a wet strengthening agent, which are mixed according to a certain mass percentage. The preparation method comprises the following steps that: firstly, the plant pulp fiber is added with de-ionized water to be scattered into a fiber suspending liquid; secondly, the aggressive gas adsorbing agent, the humidity adjusting agent, the pH buffering agent and the wet strengthening agent are added into the defibered paper pulp suspending liquid and are stirred evenly; finally, the mixture is formed on a paper sheet-making machine and is filtered and dewatered so that a wet paper disc is obtained; and the acid free paper special for the historic preservation is obtained by drying the wet paper disc. The special acid free paper have no acid substance, adopts the chlorine bleaching free paper pulp, adds calcium phosphate taken as the buffering agent, is alkalescence, has good adsorbing effect of acid gas, has the function of adjusting the humidity of the microspace environment of the protective article, and has the advantage of recycling.

A cigarette paper containing astaxanthin comprises, by weight, 50-70 parts of fiber, 25-40 parts of a calcium carbonate filler, 0.5-8 parts of a combustion improver, 1-5 parts of astaxanthin, 0.5-8 parts of a tobacco extract, 0.1-5 parts of a natural pigment, 2-10 parts of ethanol and the balance of water. A method is as below: evenly mixing fiber and calcium carbonate filler in a slurry pond to obtain a papermaking slurry; dissolving the combustion improver in water to prepare a combustion improver solution; dissolving astaxanthin in ethanol solution and adding water for dilution; adding the tobacco extract and natural pigment, and stirring evenly to prepare a dye solution; then adding the dye solution into the combustion improver solution, and stirring uniformly to obtain a mixed solution; producing the papermaking slurry into a cigarette paper base; and adding the mixed solution onto the cigarette paper base in a sizing segment. The invention confers a unique appearance to the cigarette paper, enriches and harmonizes the incense of cigarettes, and enhances the cigarette smoking quality and safety.

The invention provides natural preservative edible food packaging paper. The natural preservative edible food packaging paper comprises a dietary fiber layer, a protein membrane layer and a preservative liquid layer arranged between the dietary fiber layer and the protein membrane layer. The invention also provides a preparation method of the natural preservative edible food packaging paper. The natural preservative edible food packaging paper is a green and safe food packaging product, raw materials are easily obtained, the natural preservative edible food packaging paper is easy to operate, low in cost, economic and environment-friendly, the problems of conflicts between food packaging wastes and environmental protection and the like are fully solved, and the packaging paper is high in paper forming strength, high in flexibility, unlikely to break and wide in application range.

The invention relates to a food special tin foil and a preparation method thereof. Encapsulization sodium metabisulfite and powder of calcium chloride are uniformly coated on a composite paper according to the elemental area ratio to be prepared into the tin foil. The preparation method of microcapsule sulphite comprises the following steps: ethyl cellulose is added to cyclohexane which is an organic solvent, a motor stirrer is started to stir the mixture of the ethyl cellulose and the cyclohexane, meanwhile the mixture of the ethyl cellulose and the cyclohexane is heated by a water bath, thereby the ethyl cellulose is made to be fully dissolved in the cyclohexane, the powder of the sodium metabisulfite as a core material is added according to the ratio, the mixture is continuously stirred, fine particles are made to be uniformly distributed into the cyclohexane solution of the ethyl cellulose, then the temperature is slowly lowered, sodium metabisulfite microcapsules are formed and then cooled to the room temperature until sodium metabisulfite microcapsules are solidified, and sodium metabisulfite microcapsules are recovered by filtration, washed twice by cyclohexane, and naturally aired and crashed at the room temperature for standby. The prepared encapsulization antistaling agent and the calcium chloride are uniformly mixed according to the ratio, and the mixed powder is uniformly coated on the composite paper by a binding agent to be dried and packed.

The invention discloses an environmental-friendly degradable agricultural paper mulch and a preparation method thereof. The paper mulch is formed by papermaking of paper pulp prepared from a continuous fiber raw material or the continuous fiber raw material and a staple fiber raw material, wherein the continuous fiber raw material adopts one or a combination of two kinds of banana caulo and pineapple leaves; the staple fiber raw material adopts a combination of water hyacinth and cassava stems or a combination of the water hyacinth, the cassava stems and bagasse or separately adopts the bagasse; and a waterproof agent is fused into paper pulp. According to the preparation method disclosed by the invention, the environmental-friendly degradable agricultural paper mulch is prepared by takingmain agricultural wastes and invasive plants in South China region as raw materials; and the pollution to cultivated land caused by plastic mulch covered cultivation is reduced while the agriculturalwastes or the invasive plants are changed into valuables.

The invention provides natural preservative degradable food packaging paper. The natural preservative degradable food packaging paper comprises a fiber layer, a protein membrane layer and a preservative liquid layer arranged between the fiber layer and the protein membrane layer. The invention also provides a preparation method of the natural preservative degradable food packaging paper. The natural preservative degradable food packaging paper is a green and safe food packaging product, raw materials are easily obtained, the natural preservative degradable food packaging paper is easy to operate, low in cost, economic and environment-friendly, the problems of conflicts between food packaging wastes and environmental protection and the like are fully solved, and the packaging paper is high in paper forming strength, high in flexibility, unlikely to break and wide in application range.

The invention discloses an antibacterial coating material for paper products. The good toughness and high barrier property to water vapor of carboxymethyl chitosan are utilized for enhancing waterproofness of a coating. SiOx is utilized for carrying out molecular modification on carboxymethyl chitosan, the permeable rate of the coating is further reduced, the toughness of the coating is improved, then a SiOx/carboxymethyl chitosan solution serves as an adhesive of the coating and is mixed with polylactic acid with high grease preventing performance to form a co-mixed coating, therefore, the defects that a polylactic acid material is low in strength, high in brittleness, poor in waterproofness and the like are overcome, and the barrier property of the coating to oxygen is enhanced. The porosity of halloysite is utilized for dipping in plant essential oil, the plant essential oil can be slowly released, and it is guaranteed that the volatilization amount is within a proper range. The obtained antibacterial coating material is used for coating the paper products, therefore, the water vapor, oxygen and grease preventing performance of the paper products can be enhanced, and invasion of bacteria into objects in packaging paper can be inhibited.

Disclosed are two-color anti-counterfeiting carbonless CB (coated back)/CFB (coated front and back) paper and production process for the same. Second developed dye is emulsified and packaged by the capsulation technique, or further processed by the grinding technique, the processed second developed dye is added into CB coatings in different colors, and the coatings are coated to the back of raw paper or CF (coated front) paper to produce two-color carbonless CB/CFB paper. The original developed color of the carbonless paper can be retained on the CF side when the carbonless CB/CFB paper is gathered and printed with CFB/CF paper sheets. When the paper sheets are recognized by friction operations such as scribing and the like on the CB side, a second developed color line can appear clearly on the CB side. The two developed marks are mutually independent of each other about developing conditions, so that the new anti-counterfeiting function of carbonless copy paper is realized.

The invention relates to the technical field of papermaking, in particular to a piece of liquid crystal glass dust-free protective paper. The liquid crystal glass dust-free protective paper is prepared by the following steps: with bleached chemical softwood pulp as a raw material, conveying the raw material to a net cage with a destaticizing device via a feeing fan, wherein the net cage is used for removing static electricity on the surfaces of fibers and ensuring that the fibers are uniformly dispersed and free of flocculation; forming a paper web through an air supply system, an exhaust system and a forming net; and carrying out heat compressing, upper glue spraying, baking, lower glue spraying, rebaking and calendaring on the paper web, and then forming the liquid crystal glass dust-free protective paper, wherein the liquid crystal glass dust-free protective paper has good heat resistance, moisture resistance, anti-static property and anti-corrosion performance and can be applied to the processing or transporting process of coated glass, optical glass and liquid crystal glass substrates to play roles in backing and isolating. By virtue of a dry agglutination technique, the water consumption in the production process is greatly reduced, so that the problem of pollution of a natural water body is relieved; the capital expenditure is relatively low; the energy consumption in the production process is relatively low; and the production cost is reduced.

The present invention relates to an anticorrosive paper or paperboard substrate, as well as methods of making and using the same.

The invention discloses a two-side offset paper for printing, and belongs to the technical field of paper making. Rice hulls, water and biogas slurry are stirred and mixed, sealing, standing and fermentation are carried out, filtration, washing, freezing and smashing are carried out, rice hull fiber is obtained, the rice hull fiber and a decolorizer are stirred and reacted at a constant temperature, the product is filtered, washed and dried to constant weight to form modified rice hull fiberfill, pine wood pulp and biogas slurry are mixed, sealed, kept in a standing mode and fermented to form fermented wood pulp, hardwood pulp and softwood pulp are added, stirring, mixing and pulping are carried out to obtain wood pulp, cationic starch is added, stirring and mixing are carried out, water is added for dilution, diluted wood pulp is obtained and then evenly mixed with a retention agent, a preservative and the modified rice hull fiberfill, a netting working procedure is finished, dehydration and shaping are carried out, ground paper is formed, sizing liquid is prepared from a sizing agent and water, the surface of the ground paper is coated with the sizing liquid, drying, rolling and cutting are carried out, and finally the two-side offset paper for printing is obtained. The two-side offset paper for printing has the beneficial effects of having excellent folding resistance, high folding strength and good mechanical performance.

The invention discloses a high-barrier composite food packaging film and a preparation method thereof. The preparation method includes the steps: 1) expanding starch, white carbon black, methylcellulose, carbon nano-tubes and water to prepare expanded materials; 2) mixing PP (polypropylene), PVAL (polyvinyl alcohol), n-butyl methacrylate, white oil, lactic acid, rare earth oxide, tea polyphenol, globulin and the expanded materials to obtain mixed materials; 3) matting a paper substrate, coating the surface of the paper substrate with coupling agents to form a coupling layer, coating the surface of the coupling layer with the mixed materials to form a protective layer, and finally drying the protective layer to prepare the high-barrier composite food packaging film. The high-barrier composite food packaging film prepared by the method has excellent mechanical property, the preparation method is simple in procedure, raw materials are easily obtained, and further popularization of the method is facilitated.

The invention provides an emulsion for waterproofing and oilproofing finishing aspect of paper or cardboard and the preparation method thereof, wherein, the emulsion comprises a) a copolymer of repeated unit formed by oxa-perfluoroalkyl group (methyl) acrylate monomer, higher fatty alcohol (methyl) acrylate monomer, (methyl) hydroxyl acrylate monomer; b) an emulsifier; c) a chain transfer agent; d) an initiator. The invention is used for waterproofing and oilproofing finishing of paper. The emulsion for waterproofing and oilproofing finishing aspect of paper or cardboard of the invention does not contain organic solvent, so not only safety performance is high, but also small affect to environment is provided when used.

The invention provides a slow-release type fruit and vegetable fresh keeping paper film, and belongs to the technical field of packaging paper. The fresh keeping paper film comprises a paper layer anda bacteriostat layer in laminated arrangement, wherein the thickness of the paper layer is 100 to 120mum; the thickness of the bacteriostat layer is 20 to 40mum. The bacteriostat layer uses polyvinylalcohol and starch as base materials; inorganic carriers with pant extract essential oil are used as bacteriostats. The polyvinyl alcohol of the bacteriostat layer of the fresh keeping bag is degradable and has moisture absorption performance; through the addition of bacteriostats ingredients, the ventilation performance and the slow release bacteriostat effects can be improved; the starch in thebacteriostat layer also has the moisture absorption and essential oil release control effects; by regulating the thickness of the layer, the ventilation rate of the fresh keeping bag can be improved;the release quantity of the essential oil can also be further controlled.

A preparation method of a novel environment-friendly wallpaper, comprising the following preparation steps: a, soaking plant fibers under vacuum conditions, taking them out, adding fluorine-containing aromatic carboxylic acid ball mills to the plant fibers to obtain material 1; b, making chitosan Dissolve in acetic acid aqueous solution, add gelatin, synthetic vegetable ester, dioctyl ester, stir to obtain material 2; c, after material 1 is subjected to pulping treatment and material 2, modified nano-zinc oxide, corn starch-polyacrylamide copolymer Mix, stir, and adjust pH to obtain material 3; d, add preservative to material 3, heat and stir, and send it to a molding machine for compression molding. The wallpaper prepared by the invention has strong tensile strength, good air permeability, non-toxic, odorless, safe and environment-friendly.