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1278 results about "Pulp (paper)" patented technology

Pulp is a lignocellulosic fibrous material prepared by chemically or mechanically separating cellulose fibres from wood, fiber crops, waste paper, or rags. Many kinds of paper are made from wood with nothing else mixed into them. This includes newspapers, magazines and even toilet paper. Pulp is one of the most abundant raw materials.

Reconstituted tobacco and heated non-combustible cigarette prepared by using same

The invention belongs to the technical field of heated non-combustible cigarettes, and particularly relates to a reconstituted tobacco and a heated non-combustible cigarette prepared by using same. Preparation for the reconstituted tobacco comprises the following steps: firstly preparing a tobacco substrate by manufacturing paper with pulp through a paper-making process; and then, coating spice onto the tobacco substrate, and drying the tobacco substrate to obtain the reconstituted tobacco. The heated non-combustible cigarette prepared by using the reconstituted tobacco comprises a tobacco barrel, cigarette paper packaged outside the tobacco barrel and a composite filter stick connected with one end of the tobacco barrel, wherein a cavity is arranged in the center of the tobacco barrel; a lamellar spacing is arranged between adjacent two layers of the reconstituted tobaccos; the composite filter stick comprises a hollow section and a solid section, wherein the hollow section is in direct contact with the tobacco barrel. The reconstituted tobacco provided by the invention is designed for a heated non-combustible cigarette product, has the advantages of being relatively good in universality and applicability, wide in range of application, capable of simultaneously adsorbing certain harmful substances, capable of meeting physical and mental needs of a consumer, and the like, and has a relatively high practical value and relatively good popularization and application significance.
Owner:CHINA TOBACCO HENAN IND +1

Method for improving reconstituted tobacco paper-base quality through adding calcium carbonate and reconstituted tobacco paper-base

ActiveCN102715642APlay the role of reducing focus and harmImprove surface propertiesTobacco preparationTobacco treatmentPaper basedGuar gum
The invention discloses a method for improving the reconstituted tobacco paper-base quality through adding calcium carbonate and a reconstituted tobacco paper-base, belonging to the technical field of cigarette production. The method for improving the reconstituted tobacco paper-base quality through adding calcium carbonate comprises the steps of soaking and extracting tobacco stems and tobacco powder, grinding, pulping, sheet making, squeezing and drying, wherein in the sheet making step, the calcium carbonate and guar gum which respectively occupies 10-70% and 0.05-0.5% of the mass percent of the tobacco raw pulp are added into the tobacco raw pulp. Researches show that after the calcium carbonate and the guar gum are added according to an appropriate proportion, the tensile index, tear index and air permeability of the produced reconstituted tobacco paper-base are obviously improved, the whole water-absorption performance of the reconstituted tobacco paper-base is also improved, the tar yield, CO content and total particle matter content of the sheet paper-base are obviously decreased, so that the tar and harm reduction function of the reconstituted tobacco is better played, the combination property of the tobacco sheet is effectively improved, and the operation performance and effectiveness of a reconstituted tobacco production line are improved.
Owner:CHINA TOBACCO GUANGDONG IND +1

Paper pulp made from bamboo fiber, preparation method thereof, and paper product made from paper pulp

The invention discloses paper pulp made from bamboo fiber, a preparation method of the paper pulp, and a paper product made from the paper pulp and belongs to the field of pulp making and papermaking technology. The whiteness of the paper pulp made from bamboo fiber ranges from 20% to 40% ISO, the tensile index is larger than or equal to 7.9 N*m/g, the folding strength ranges from 15 times to 200 times, the fracture length ranges from 5 km to 10 km, the ash content is smaller than or equal to 1%, the tearing strength ranges from 200 mN to 650 mN, and the beating degree ranges from 10 degree SR to 25 degree SR. The preparation method of the paper pulp made from bamboo fiber includes the steps of raw material breaking, stewing, defibering, defibrination, screening and washing. The paper pulp made from bamboo fiber can be used for making culture paper or paper for daily use. The paper pulp has a good performance parameter, can replace conventional wood pulp and is superior to the conventional wood pulp; the preparation method of the paper pulp has the advantages of being high in yield, easy to operate, convenient to produce, low in cost and environmentally friendly, and the 100% natural features of bamboo fiber are kept.
Owner:SICHUAN HUANLONG NEW MATERIAL

Method for preparing reconstituted tobacco paper base made from tobacco stems

The invention discloses a method for preparing reconstituted tobacco paper base made from tobacco stems, wherein the reconstituted tobacco paper base is prepared through taking the tobacco stems as a raw material and adopting a papermaking method and the preparing method comprises the steps of impregnation, defibrination, pulping, sheet making and drying of the tobacco stems. According to the invention, a technical scheme capable of optimizing the comprehensive property of the reconstituted tobacco paper base made from the tobacco stems is provided, which comprises treatment conditions of key processes of the impregnation, the defibrination, the pulping and the like; and a technical mean capable of improving the fiber morphology of the tobacco stems and the physical property of paper pulp is obtained. Showed by results, contents of water-soluble sugar, total plant alkaloid, chlorine and total nitrogen in the tobacco stems are decreased to varying degrees and the holocellulose content is relatively increased by 12.4% after the impregnation and extraction in the technical scheme provided by the invention are adopted; the fiber length of the obtained tobacco stem pulp is longest and the bulk of the finished paper is highest through selecting different types of refining plates and different defibrination gaps; and the tensile index, the tear index, the bulk, the air permeability and the burst index of a paper base product are appropriate and the good quality of reconstituted tobacco is guaranteed through combining the design of the beating degree of the tobacco stem pulp and the technical condition of the sheet making.
Owner:CHINA TOBACCO GUANGDONG IND +1

Nickel and iron slag-based forsterite lightweight heat insulation brick and making method thereof

ActiveCN105272275ASolve processing problemsLow volume stabilityResource recoverySlag
The invention relates to a making method of a nickel and iron slag-based forsterite lightweight heat insulation brick. A technical scheme adopted in the invention is characterized in that the method comprises the following steps: adopting 65-75wt% of nickel and iron slag, 10-20wt% of light calcined magnesia fine powder, 5-15wt% of magnesium carbonate fine powder and 5-10wt% of silicon micro-powder as raw materials, adding an additive accounting for 0.5-2.0wt% of the weight of the raw materials, carbon black accounting for 5-15wt% of the weight of the raw materials and a paper pulp waste liquid accounting for 3-9wt% of the weight of the raw materials, uniformly mixing, and carrying out compaction molding; and carrying out heat insulation at 500-700DEG C for 4-8h, sintering at 1300-1550DEG C, and carrying out heat insulation for 2-6h in order to obtain the nickel and iron slag-based forsterite lightweight heat insulation brick. The making method has the advantages of high resource recovery rate, environmental protection and low production cost; and the nickel and iron slag-based forsterite lightweight heat insulation brick made in the invention has the advantages of good volume stability, high pressure strength, low volume density, high micro-porosity and low heat conduction coefficient.
Owner:WUHAN UNIV OF SCI & TECH

Energy-saving and environment-friendly displacement cooking process for wood and bamboo raw materials

The invention discloses an energy-saving and environment-friendly displacement cooking process for wood and bamboo raw materials. The process comprises the following steps of: carrying out (1) pot filling operation, (2) dipping operation, (3) low-temperature stewing operation, (4) high-temperature stewing operation, (5) displacement washing operation and (6) pot dumping operation. Compared with the conventional vertical pot batch cooking process, the process disclosed by the invention has the advantages that the efficiency is improved by 30-40%; the thermal energy of a system is reasonably and circularly utilized, the steam consumption of a ton of pulp is not higher than 0.6 ton; the coarse pulp yield is improved by 1% than any stewing technique, the maximal stewing temperature is lowered by about 6 DEG C, and the steam consumption can be effectively reduced; the pulp is washed in the operation process, the process flexibility is strong, the adaptability of raw materials is good, and the requirement on percent of pass of tablets is low; in a pulp dumping process, no noise is made, and basically no exhaust steam is discharged; the damage on fibers is little, the quality of final pulp is good, and the strength of paper pulp is high under a same kappa number condition; and the low-kappa-number pulp can be obtained, the use level of bleaching medicines is low, and the pollution load is light.
Owner:WENRUI MACHINERY SHANDONG

Method for preparing bleached pulp by using eucalyptus wood chips

The invention discloses a method for preparing bleached pulp by using eucalyptus wood chips, and belongs to the fields of pulping and papermaking. The method comprises the following steps: orderly washing, dewatering and presteaming a eucalyptus wood material, carrying out double helix extrusion, chemical impregnation and high-consistency refining, eliminating, washing and the like. A double helix extruder with a variable pitch and a variable diameter is adopted in extrusion and concentration treatment of the material before defibrination; the damage of the traditional extrusion tearing machine to a fiber is avoided; the quality of the prepared pulp is similar to that of the pulp prepared by qualified chips; the bulk of the pulp can achieve over 3.4 cm<3>/g; the whiteness can achieve over 76% ISO (international standardization organization); effective utilization of the eucalyptus wood chips in the fields of pulping and papermaking is achieved; alkaline hydrogen peroxide which is friendly to the environment is adopted in the craft process; a fewer of pollutants are generated in the pulping process and are non-toxic; instant bleaching and subsequent bleaching reaction are achieved by effectively utilizing the heat energy generated in the pulping process; and steam consumption is reduced.
Owner:INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY

Vacuum type thermal transfer printing body paper and method for preparing same

The invention relates to vacuum type thermal transfer printing body paper and a method for preparing the same. The vacuum type thermal transfer printing body paper is used for printing processing carrier materials of aluminum section bars. The method includes preparing raw materials including 20-5-wt% of softwood pulp, 48-70wt% of hardwood pulp and 0.1-20wt% of talc; performing repulping for the prepared raw materials for 3 to 10 minutes; performing defibrination for the pulp mixture, then feeding the pulp mixture into a machine chest in a beating manner, and then feeding the pulp mixture into a proportioning pond in a beating manner while adding auxiliaries into the proportioning pool to realize proportioning; feeding the proportioned pulp into a pulp regulating pond to be regulated in a beating manner, and sequentially enabling the pulp to enter a papermaking forebay, a paper machine high-level box, a paper machine mesh and a paper machine squeezing portion to obtain a primary printing body paper product; adding auxiliaries into the paper machine high-level box; setting the vacuum degree of the paper machine mesh to range from 0.05MPa to 2.0MPa and the vacuum degree of the paper machine squeezing portion to range from 2.0MPa to 4.0MPa; and drying to obtain a finished product. The vacuum type thermal transfer printing body paper is degradable and is low in cost, fine in body paper performance and convenient to use.
Owner:ANJI DACHENG PAPER

Paper filter material containing polyester fibers for cigarette filter tip and preparation method thereof

The invention provides a paper filter material containing polyester fibers for a cigarette filter tip and a preparation method thereof. The paper filter material comprises 10-90% of polyester fibers and the balance of wood pulp fibers or non-wood pulp fibers and also comprises a functional additive accounting for 0.1-5wt% of the polyester fibers and a coating material accounting for 0.1-5wt% of the paper filter material, wherein the polyester fibers are polyethylene terephthalate fibers or polylactic acid fibers or poly(beta-hydroxybutyrate) (beta-PHB) fibers or poly(butylenesuccinate) fibers; the wood pulp fibers are neddle wood pulp fibers or/and hardwood pulp fibers; the functional additive is water-soluble polymer material or polypeptide, and the polypeptide is plant polypeptide or animal polypeptide. The preparation method comprises the following steps: adding the functional additive into the polyester fibers, and jordaning to obtain a polyester fiber slurry; then respectively blending the polyester fiber slurry with the respectively prepared non-wood pulp fiber slurry or wood pulp fiber slurry in a blending tank; utilizing a paper making machine to make paper with pulp and shape, dehydrating and performing primary drying to obtain dry paper; coating the coating material accounting for 0.1-5wt% of the dry paper onto the surface of the paper; and performing secondary drying, thus obtaining the paper filter material provided by the invention. According to the invention, the range of available fiber raw materials for making the paper filter material is enlarged, the paper performance is improved, and the influence of the paper filter material on the smoking quality of cigarettes can be reduced.
Owner:YUNNAN REASCEND TOBACCO TECH GRP

Method for preparing tobacco sheet paper base from tobacco stems

ActiveCN102669809AEasy to shapeImprove paper performanceTobacco preparationFiberPaper based
The invention discloses a method for preparing tobacco sheet paper base from tobacco stems as raw materials by adopting the paper making process. The method comprises the following steps: impregnating, pulping and making sheets. The invention changes the traditional technological prejudice and custom of controlling the pulping by controlling the current of a pulping machine and innovatively realizes the pulping by controlling the pulping disc, the pulping gaps, the pulping segments and the pulping concentration. The condition of the pulping process is optimized systematically, two or three segments of pulping are adopted, the pulping concentration is controlled at 20%, and the pulping gaps for the first and second segments of pulping are respectively 0.4mm and 0.20mm. Through studying and analyzing the relation between the pulping process and the performance of the tobacco stem fiber integrally, the controllable optimum pulping condition is summarized, the longest fiber of the tobacco stem pulp, the highest bulk of the formed paper and the good quality of the reconstituted tobacco are guaranteed, the performance of the tobacco sheet paper base is improved comprehensively, and finally the technological basis is provided for improving the quality of the tobacco sheets and the cigarettes.
Owner:CHINA TOBACCO GUANGDONG IND +1

Method for preparing paper making wet end chemical addition agent by using cassava residue as raw material

The invention discloses a method for preparing a paper making wet end chemical addition agent by using cassava residue as a raw material; the method comprises the following steps: the cassava residue is beaten and then is washed and dispersed by clean water; after suspended cassava barks and crude fibers are removed, sedimental cassava residues and fine fibers are dehydrated for standby application, are mixed with the crude fibers obtained through winnowing and separation of the removed cassava barks and the crude fibers and are diluted into slag pulp; then the slag pulp is jointly processed by sodium hypochlorite and hydrogen peroxide; the processed slag pulp is ball-milled into powder; a modified liquid reagent is used for carrying out chemical modification on the powder, a modified synthesis mixture is washed and filtrated by an organic solvent and finally filter cakes are dried and powdered so as to obtain the modified cassava residue product. In the method, the process is simple, devices are matured, and simultaneously as a multiple-effect paper making wet end chemical addition agent, the prepared modified cassava residue product is used for reinforcing paper pulp and helping retention and filtration, has higher economic value and provides a positive approach for effectively solving environmental pollution caused by the abandon of cassava residues.
Owner:SOUTH CHINA UNIV OF TECH

Preparation method of bouquet type non-combustible reconstituted tobacco for heating non-combustible cigarettes

The preparation method of the bouquet type non-combustible reconstituted tobacco for the heating non-combustible cigarette comprises the following steps: respectively extracting a tobacco stem raw material and a leaf powder raw material, and carrying out solid-liquid separation after extraction to obtain tobacco stem residues and a tobacco stem extracting solution as well as leaf powder residues and a leaf powder extracting solution; mixing and grinding the tobacco stem residues and the leaf powder residues into pulp, and obtaining tobacco mixed pulp; respectively carrying out vacuum concentration on the tobacco stem extracting solution and the leaf powder extracting solution to obtain stem paste and leaf paste, and mixing the stem paste and the leaf paste to obtain a tobacco extract; mixing the tobacco mixed pulp, wood pulp fibers, a solid-phase wine aroma type substance and a filler to prepare pulp, adding an auxiliary agent, and making paper into a substrate by adopting a papermaking process; mixing and blending the tobacco extract, the atomizing agent and the essence to obtain coating liquid, coating the coating liquid on the sheet base, and drying to obtain the bouquet type non-combustible reconstituted tobacco. The reconstituted tobacco prepared by the method has unique wine fragrance and good bulk, and is particularly suitable for making low-temperature heating non-combustible cigarette products.
Owner:YUNNAN REASCEND TOBACCO TECH GRP

Salix psammophila bleached chemi-mechanical pulp technology

The invention discloses a salix psammophila bleached chemi-mechanical pulp technology. According to the technology, (1) salix psammophila is cut into even material sections, the materials are conveyed to a dual-drum material washing machine for removing impurities, the materials are dehydrated and spirally conveyed to a steaming bin to be subjected to sufficient dipping, and then the materials are conveyed to a dual-screw thread rolling machine; (2) the materials are then conveyed to a high-consistency reaction bin for standing after thread rolling is carried out in the first section of thread rolling machine; (3) pulp materials passing through the first section of reaction bin is washed and dehydrated through a section of press master, a second section of rolling, grinding and filament separating is carried out, and the materials are conveyed to the high-consistency reaction bin for standing after thread rolling; (4) high consistency refining is carried out after the pulp materials after standing pass through two sections of press masters; (5) after high-speed latency eliminating is carried out on grinded coarse pulp through a hydrapulper, deslagging, fine grinding, screening and concentration are carried out, and then the materials are conveyed to a pulp distribution chest and then to a papermaking workshop. According to the salix psammophila bleached chemi-mechanical pulp technology, the characteristics of salix psammophila are utilized, the technology is simple and easy to operate, large complex equipment is not needed, the technology is more environmentally friendly compared with an existing technology, the performance is high, and the cost is low.
Owner:石河子市国力源环保制浆有限公司
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