124 results about "Newsprint" patented technology

The invention discloses a method that uses esterase obtained by 100 percent deinking and desizing of wasted newspaper controls sticky which mainly aims at producing the low fixed amount newspaper by using the 100 percent deinking and desizing of the wasted newspaper, adopts Optimyze 525 esterase control sticky and produces the newspaper with 45g/mm<2> fixed amount. The invention has the advantages of reducing the dosage of the sticky in the paper pulp, leading the sticky removing rate to be about 20 percent to 40 percent, reinforcing the operating performance of a paper machine, and helping to improve the speed and the output of the paper machine; by adopting deinking and desizing of 100 percent wasted newspaper to make 45g/m<2> lowing amount offset newsprint, the obtained products have good quality, chemical pulp and groundwood pulp which are high in pollution and high consumption are eliminated, the manufactory cost of the pulp material and the processing cost of the water are reduced, and the discharged waste water and the pollutants are reduced.

A waste new print zyme deinking technology includes crushing the pulp, deinking, suspension selection, washing, bleaching among which, deinking agent, laccase, amboceptor are added into the pulped with waste newsprints and waster to be inlet with oxygen and the pulp concentration is controlled at 3%-18%, temperature 20-70deg.C pulping, keeping warmth.

An automated guided vehicle for loading and unloading a rotary press with various types and widths of rolls of newsprint or other paper irrespective of their diameters. The vehicle has a traveling carriage for automatically transporting a newsprint between a storage area and the setting area in a rotary press machine. It includes a hoisting/lower unit which hoists and lowers the newsprint in the vertical direction into and away from registering with the paper holding arms of the rotary press machine. The hoisting/lowering unit includes two hoisting/lowering frames parallel to a traveling road surface, and the central axis between the fixed and movable paper holding arms of the rotary press paper. The frames are kept spaced apart by an arc-shaped connecting member. Linear guides on upper surfaces of the two hoisting/lowering frames slidably support a moving table bridging over the linear guide 144 which supports the roll and permits the supported roll to be axially displaced into engagement with the support cones of the fixed holding arms.

The fire log comprises an organic fibre base that is over-saturated with vegetable cooking oil. The vegetable oil is contained and sealed therein by a casing made of the vegetable wax. More specifically, the fire log is over saturated with 65%-75% by weight of vegetable oil. The vegetable oil is used vegetable cooking oil. The organic fibre base represents about between 20%-30% by weight and consists of compressed paper-based products such as cardboard, newsprint and recyclable paper. The vegetable wax casing represents about between 1-5% of its weight. In another aspect of the present invention, the organic fibre base is made of broken fibres and interstices, and the vegetable oil is infused therein while these fibres are dilated from their natural states. In yet another aspect, the organic fibre base is formed in a perforated cylinder whereby a bark-like appearance is imprinted on its surface.

The invention relates to a method for synthesizing cationic starch at low cost, wherein sweet potato starch or corn starch is mixed with water to obtain starch suspension, and then the sodium hydroxide with weight of 1.5% to 3.0 % relative to starch as well as the cationic etherifying agent 3-chlorine-2- hydroxypropyl trimethyl ammonium chloride are dripped; subsequently, reaction is conducted for 2 to 4 hours at 40 DEG C to 90DEG C, followed by neutralization by dilute hydrochloric acid solution to reach pH 6.5 to 7.0; finally, rinsing, dewatering, drying and preparing are conducted to substitute the cationic starch within the range from 0.02 to 0.04, which can reach the yield of no less than 99% with the use amount of cationic etherifying agent reduced by about 50% and the reaction duration shortened by 4 to 7 hours. The product has the advantages of dramatic stability of 3% paste liquid, no stratification within 100 hours, high transparency, improved strength and quality of the finished paper in production of regenerative newsprint.

The invention discloses a chemi-mechanical pulp manufacturing technology which includes the step of wood chip washing, the step of extruding and dipping, the step of pulp grinding, bleaching and pulp washing, the step of screening, purifying and regrinding of pulp residues, the step of pulp condensation and storage, the step of water circulating use and the step of chemical application and control. In the step of extruding and dipping, the extruding and dipping technology and an extruding and tearing device are used, heated and softened wood chips are evenly squashed in the texture direction, air in the wood chips and extracts affecting bleaching are discharged, it is ensured that the wood chips evenly absorb bleaching chemical liquid to be in a saturated state, fibers are promoted to be in the best moist and expanded state, and accordingly separation of the wood chips and fibrillation of the fibers are facilitated. The chemi-mechanical pulp manufacturing technology is wide in raw material application range and successfully combines the advantages that chemical pulp is high in strength and mechanical pulp is high in yield, produced bleached pulp can be used for newsprint, high-grade toilet paper, facial tissues, high-grade culture and printing paper, coating paper, light paper, white paper boards, food package paper and the like, and development prospects are wide.

Newsprint for offset printing having sufficient water absorption resistance to provide a clear printing image with less color registration problems upon offset printing is manufactured by coating base paper, to which aluminum sulfate (a 50% by weight Al₂O₃.14H₂O product) is added at a ratio of less than 3.0% by weight upon paper making, with a surface treating agent mainly comprised of (A) a water-soluble macromolecular substance selected from starches, PVAs, polyacrylamides, and cellulose derivatives, (B) a copolymer obtained by the copolymerization of a styrene monomer and a cationic monomer, a water-soluble copolymer obtained by the copolymerization of a styrene monomer, a cationic monomer and a hydrophobic monomer, or a water-soluble copolymer obtained by treating one of these copolymers in which a tertiary amine-containing vinyl monomer is used as a cationic monomer, with a quaternizing agent.

SC paper which is produced from a fibrous stock suspension containing fibers which are partially loaded with ash is characterized in that the ash content in the SC fiber web which was produced from the fibrous stock suspension is higher than 35%, preferably higher than 39%. Newsprint which is produced from a fibrous stock suspension containing fibers which are partially loaded with ash is characterized in that the ash content in the newsprint fiber web which was produced from the fibrous stock suspension is higher than 15%, preferably higher than 19%. Wood-free, uncoated paper which is produced from a fibrous stock suspension containing fibers which are partially loaded with ash is characterized in that the ash content of the wood-free, uncoated fiber web which was produced from the fibrous stock suspension is higher than 15%, preferably higher than 19%.

A method for making fire retardant material including fire retardant cellulosic insulation. The method includes an arrangement for adding one or more feedstocks and a fire retardancy chemical compound to a common blend tank prior to feedstock drying. The one or more feedstocks may include at least one virgin pulp stock feed and at least one recycled material stock feed. The amount and type of both the virgin feedstock and the recycled material feedstock is selectable. Old newsprint (ONP) may be one type of recycled material feedstock. Another suitable type of recycled material feedstock is old corrugated containers (OCC). The method further includes retaining the fiber feedstock and the chemical compound together for enough time to ensure adherence or impregnations of enough of the chemical to the fibers after the drying process. Fluffing or fiberizing of the treated fibers may be accomplished under less severe conditions than ordinarily employed when making conventional cellulose insulation.

The invention discloses a newsprint neutral voiding method in the pulping paper making technique domain with pulping, floating, scrubbing and bleaching procedure, which is characterized by the following: adapting flotation-scrubbing method without alkali; inputting 0.1 úÑ-2.0úÑ voiding agent, 1úÑ-6úÑ inorganic salt in the floating course; controlling the floating paste density between 2 and 18 percent, temperature between 20 and 70 deg.c, pre-impregnated time between 0 to 40 min, floating time between 10 and 60 min, insulating time between 0 and 40 min; The method improves the voiding efficiency and voiding paste whiteness by 16.6 percent as well as reduces the CoDcr in the neutral voiding waste-water by 190mg/l, which lessens the waste-water pollution load.

The present invention discloses a surface-sized news-paper and its making method. It includes the following steps: using bleached sulfate needle wood pulp (BKP), beating, then mixing it with Italia poplar alkaline hydrogen peroxide hot-ground mechanical wood pulp (APMP) and bleached mechanical grindstone ground wood pulp (GP), according to mixing ratio blending them into mixed pulp, adding auxiliary material and making them into raw material pulp for making paper. The standard quantity of said news-paper is 45-49 g/sq.m, brightness (ISO) is 57-63%, opaqueness is greater than 91%, transverse tearing index is greater than 5.5mV, sq.m/g, surface strength is greater than 0.5 m/s, and breaking length longitudinal is greater than 4000 m.

It is an object to improve sizing performance and anti-plate-soiling property in offset printing, for example, in a cationic surface sizing agent to be used for coating base paper of newsprint paper, and as a means for solving the object, a cationic surface sizing agent is produced by quaternizing a copolymer having a weight average molecular weight ranging from 30,000 to 60,000 obtained by polymerizing (a) 20 to 40% by weight of a monomer containing tertiary amino group; (b) 10 to 80% by weight of a C4 to C18 alkyl ester of (meth) acrylic acid; and (c) 0 to 70% by weight of a styrene or derivative thereof, using an azoic polymerization initiator in the presence of a chain transfer agent. In this manner, it is possible to improve sizing performance without reducing the hydrophobic level of copolymer and to suppress sensitization of printing plate such as PS plate by specifying the monomer composition ratio, using an azoic polymerization initiator, and specifying molecular weight of the copolymer.

The invention discloses a method for producing environment-friendly regenerated bobbin body paper by using paper mill sludge of newsprint, relating to the field of recycle of paper mill sludge of newsprint. According to the method provided by the invention, the environment-friendly regenerated bobbin body paper is prepared by the following steps: mixing treated paper mill sludge of newsprint with treated OCC pulp in a certain proportion; and manufacturing paper with pulp by white water in a newsprint papermaking process. According to the method provided by the invention, the environment-friendly regenerated bobbin body paper is produced by using paper mill sludge produced in the production process of newsprint, so that the production cost is lowered, the waste paper resources are saved, the water resources are recycled, and the environmental pollution is avoided.

The invention discloses a preparation method for low basis weight newsprint by using 100% de-inking waste paper pulp added with retention and filter aid, which comprises a plurality of steps: add 100% de-inking waste paper pulp into a proportioning tank of a high-speed paper machine; then add calcium carbonate and fixing cation modified polyamines; add starch at the entrance of a machine chest; use tray water to flush the pulp at the outlet of the machine chest; control the wite pulp concentration at 1.0%; after desanding and deaerating, add the retention aid cation water soluble macromolecule polyacrylamide derivative at the outlet of a sizing pump and the inlet of a vertical screen; add filter aid polyethylenimine at the outlet of the vertical screen; the pulp is sent into a head box of the high-speed paper machine; thus, the low basis weight newsprint can be produced. The preparation method for low basis weight newsprint by using 100% de-inking waste paper pulp added with retention and filter aid has the advantages that by adopting 100% de-inking waste paper pulp, the preparation method saves fiber material for making paper on the basis of changing the material structure of the newsprint, greatly reducing the consumption of timber, water and electricity and the emission of pollutant, relieving the environmental pollution and lowering the production cost.

This invention provides a kind of news paper used in high speed cold offset point cycle printing and a news paper suitable for printing with environment protection printing ink, which forms a dye coating containing CaCO3 on the two sides of base paper to be converted to dry solid component and the total coating volume of the two sides is 0.5-3.0g/m2, whiteness is greater than or equal to 54% and ash is 5-15 mass%, non-transparency is greater than or equal to 90%, dynamic friction coefficient is 0.50-0.65, the basic weight is 37-45/m2.

The invention discloses a full-cotton stalk news pulp and preparing method through full-sealing, non-polluting, self-circulating and zero-discharge oxidizing method, which is characterized by the following: utilizing electron reducing reaction in the ion reaction of oxygen molecular to produce free radical of active oxygen to transmit and separate lignin; making chromogenic gene change in the plant cell interlayer to obtain pulp. The invention changes chemical pulping technology without polluting acid, alkaline and anthraquinone, which saves boiling and bleaching procedures.

The present invention aims to provide coated papers for newsprint inks having fast ink drying properties comparable to those of conventional newsprint papers, without stickiness, and having good reproduction and sharpness of printed images comparable to those of coated papers printed using penetration drying type inks; as well as processes for preparing them.

Herein disclosed is a coated printing paper for newsprint inks comprising a coating layer containing a pigment and an adhesive on a base paper, characterized in that the coating layer on the base paper has a coat weight of 4.0 g/m² or more per side and that the coated paper has an oil absorbency under pressure of 20 g/m² or more and a Bekk smoothness of 75 seconds or less; as well as a process for preparing the paper.

A dispensing device comprises a dispensing box, a roll of a sheet-like packaging material, and a cutting edge. The box includes a series of sides and a dispensing slot on one of these sides. The roll includes a leading portion which is inserted through the dispensing slot and pulled in a pulling direction (P). The cutting edge is positioned downstream of the dispensing slot relative to the pulling direction (P) whereby the packaging material can be dispensed in a desired length to suit the packaging needs of a particular item and then cut to this desired length by the cutting edge.

The roller rotation printing machine enables sheets to be printed in both newsprint and commercial quality with printing units of the roller rotation printing machine. The folding unit consists of at least one newspaper folding mechanism and at least one illustration folding mechanism and the relevant printed sheets can be fed to the newspaper folding mechanism and to the illustration folding mechanism according to the required folding quality. The roller rotation printing machine (1) enables sheets to be printed in both newsprint and commercial quality with printing units (5-7) of the roller rotation printing machine. The folding unit (2) consists of at least one newspaper folding mechanism (3) and at least one illustration folding mechanism (12) and the relevant printed sheets can be fed to the newspaper folding mechanism and to the illustration folding mechanism according to the required folding quality.

The invention discloses an environmental-protection waste paper deinking method; the method comprises the processes: preliminary cleaning, crushing enzyme treatment, ultrasonic enzyme treatment, flotation and washing. The environmental-protection waste paper deinking method provided by the invention can be applicable to deinking treatment of waste corrugated paper, waste newspaper, colored offset newsprint paper, waste books and magazine paper, office waste paper and laser and electrostatic duplicated paper, a used deinking agent is a bio-enzyme, the pH value of the entire treatment process is neutral, additional additives have no need for adjusting the pH value, the costs are saved, the quality of a waste paper pulp is improved, the difficulty of subsequent sewage treatment is reduced, produced wastewater can be recycled after simple treatment, resources are saved, the costs are reduced, and the environment is protected; a non-woven fabric is prepared from waste paper fibers, the price is low, and the costs are saved; and the waste paper after deinking has the advantages of less fiber loss, high whiteness, small dust degree, and good reutilization property.

The invention provides coating newsprint and a making method thereof. The newsprint has the following specifications: the fixed weight is 45-49g/m<2>, whiteness is 59-63%, transverse tear index is larger than 5.5m N.m<2>/g, opaqueness is larger than 95%, surface strength is larger than 1.0m/s, average smoothness of the front side and the back side is larger than 60S, the smoothness difference of the front side and the back side is less than 20%, and the longitudinal breakage length is larger than 1500m. The making method of the coating newsprint comprises the following steps of: preparing 100% regenerated fiber deinked pulp completely made from No.8 waste paper and adding auxiliary materials including retention aid, dyes and cationic starch to obtain material pulp; distributing pulp by using a headbox, forming at a neat part, carrying out composite squeezing in a four-roller three-pressing region, primary drying, surface mineral pigment coating and finishing, post-drying, reeling by using reeling machine and external re-reeling. The making method is simple, the coat of coating newsprint per ton is reduced by 250-280 yuan; the surface whiteness of the product is greatly improved, the surface of the product is smooth and fine, the ink absorption rate of the product is moderate; the printability is improved; ink consumption during printing can be reduced 10-15wt%; the printed pictures have bright color and clear wire marks; and the made coating newsprint can meet printing requirements of common newspapers and periodicals and high-quality colored newspapers and periodicals.