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292 results about "Stickies" patented technology

When recycling post-consumer paper, stickies are tacky substances contained in the paper pulp and process water systems of paper machines. Stickies have the potential to contaminate the components either within or around the equipment necessary in the Stages of Manufacturing that a Paper Mill follows in its Developed Process, but would have otherwise excluded it in its routine cleaning and maintenance procedures. Contaminations of paper that are classified as tacky are also called stickies. The main sources for stickies are recycled paper, waxes, and soft adhesives.

Paper cigarette filter rod filter media and processing method thereof

The present invention discloses a paper cigarette filter rod filter media and a processing method thereof, wherein the paper filter media is obtained through performing a dry process on the following components: 40-74% of natural cigarette fiber, 4-40% of bast fiber, 1-12% of natural tobacco waste raw material, and 4-20% of adhesive. The method comprises the following steps: raw material processing, main fiber mixing shaping, waste material adding and prepared paper shaping process. After the natural tobacco fiber is mixed with the bast fiber, discongestion is performed. After sufficient dispersion, the mixed material is conveyed to a shaping section through a blower for being laid on a net and shaped. A fluffy and uniform fiber net is formed on a shaping net belt. The cigarette filter media paper is obtained through adhesive applying, preheating, roller pressing, solidifying and shaping. As the cigarette fiber is used as the main fiber raw material, the paper cigarette filter rod filter media according to the invention has reduced foreign gas of wood and settles a problem that the fragrance quality is reduced by the foreign gas of wood in the prior-art paper filter rod. The natural tobacco waste raw material is added in the paper shaping process. Not only is whole aesthetic quality of the cigarette improved, but also the tobacco raw material is uniformly distributed in the dry process paper and does not easily drop off. The quality of the filter rod is more stable.
Owner:YUNNAN REASCEND TOBACCO TECH GRP

Low glue consumption method for making medium density fiberboard

The invention relates to a low glue consumption method for making a medium density fiberboard, which comprises the following steps of: material preparation, i.e. processing the raw materials of small dimension wood, brush wood and the like into wood chips by adopting a drum chipper; fiber preparation, i.e. sending qualified wood chips to a wood chip cooking pot through a belt conveyor, introducing papermaking waste liquid into a boiler to carry out cooking softening treatment after filtering the papermaking waste liquid, sending the wood chips which are cooked and preheated into a thermofiner to carry out mechanical separation through a feeding screw, and filling molten wax before the wood chips enter a grinding chamber body of the thermofiner, so that after the wood chips are separated into the fibers, the wax is uniformly distributed on the surfaces of the fibers; sizing and drying of the fibers, wherein a production process of firstly sizing and then drying is adopted; pavement and formation of a board blank; hot-press forming, i.e. sending the single board blank into a hot press to carry out hot pressing through a loader, so that under the combined action of heat and pressure, moisture in the board blank is gasified and evaporated, the density of the board blank is improved, glue is cured and a waterproof agent is redistributed; and post-processing, i.e. finally, sending the obtained product into a sanding machine to carry out surface processing. The low glue consumption method for making the medium density fiberboard is simple and convenient.
Owner:广西新凯骅实业集团股份有限公司

Melamine-urea-methyl aldehyde copolycondensation resin lumber adhesive and preparation thereof

The invention relates to melamine-urea-formaldehyde copolycondensation resin (MUF) wood adhesives and a method for preparing the same, belonging to the wood processing and production technical field. The adhesives are formed by copolycondensation of melamine (M), urea (U) and formaldehydes (F) and are characterized in that: the formaldehydes are added at a time and the urea and the melamine are added for a plurality of times, and the amount of the formaldehydes is over 40 percent of the total amount of the urea and the melamine, wherein, the formaldehydes are added at a time during the initial reaction stage, and urea for the first time and melamine for the first time are added during the initial reaction stage; after the urea for the first time is added, the mole ratio of the formaldehydes and the urea is controlled to be over 2.9; melamine for the second time is added during the intermediate reaction stage; and urea for the second time is added during the late reaction stage. The melamine-urea-formaldehyde copolycondensation resin (MUF) wood adhesives have the advantages of good stability, excellent performance and so on, are used for producing hard boards and particularly high-performance hard boards, laminwood and so on, and also can be used for producing impregnated paper.
Owner:SOUTHWEST FORESTRY UNIVERSITY

Method for controlling secondary stickies through lipase

The invention discloses a method for controlling secondary stickies in paper pulp and white water during waste paper papermaking process through lipase. According to the invention, the pH (potential of hydrogen) value of lipase ranges from 7.5 to 9.0, the enzyme activity is larger than 100 U/mL, the hydrolysis rate for triglyceride is not lower than 95%, and transesterification and lipid synthesis rate of alkaline lipase is lower than 3%; a paper pulp processing method comprises the steps that lipase which is 0.001-0.5% of paper pulp dry weight is added into paper pulp with the pulp concentration which is adjusted in a range from 2% to 5%, and then the processed pulp is filtered, centrifuged and detected; and a white water processing method comprises the steps that lipase which is 0.001-0.5% of white water weight is added into papermaking white water for processing, and then the processed white water is filtered, centrifuged and detected. The method utilizes lipase to degrade the stickies thoroughly and reduce the deposition trend of the stickies, so that the removal purpose is achieved, and the problem of secondary sticky pollution is thoroughly solved; and the operation is simple, the removing effect is remarkable, the waste paper papermaking quality is improved, and the production cost is reduced.
Owner:TAIXING YIMING BIOLOGICAL PRODS

Non-formaldehyde-release consolidated composite floor and production method thereof

A non-formaldehyde-release consolidated composite floor and a production method thereof are disclosed, the non-formaldehyde-release consolidated composite floor from the surface to the bottom sequentially comprises an impregnated wear-resistant paper layer; an impregnated decorative paper layer; a high-density fiberboard substrate layer prepared from a MDI ecological adhesive; and an impregnated balance paper layer; and the production process is as follows: using 37wt% formaldehyde, melamine, urea, hexanolactam and diethylene glycol for preparation of melamine formaldehyde resin; mixing 1.4 to 1.6 parts by weight of cetyl trimethyl ammonium bromide and 55 to 57 parts by weight of deionized water, stirring evenly, adding 18 to 20 parts by weight of a tea extract and 23 to 24 parts by weight of carbonyldiimidazole for preparation of a formaldehyde catcher; using the obtained melamine formaldehyde resin and formaldehyde catcher, and urine phthalic acid and triethanolamine for preparation of impregnation resin; using the obtained impregnation resin for preparation of impregnated wear-resistant paper, impregnated decorative paper and impregnated balance paper; and using a high-density fiberboard prepared by the MDI ecological adhesive, and the prepared impregnated wear-resistant paper, impregnated decorative paper and impregnated balance paper for preparation of the consolidated composite floor.
Owner:圣保罗家居科技有限公司

Biodegradable LA (lactide) oligomer bonding agent, and preparation method and purpose thereof

The invention relates to a biodegradable bonding agent material prepared from LA (lactide) chemical synthesis products. The LA materials are poured into a reaction container containing solvents according to the proportion of 5 to 50 percent of the mass of the solvents; a reactor has a stirring and control function; the reactor is controlled under the nitrogen gas protection condition; a certain reaction temperature is controlled; meanwhile, the stirring is performed; after the LA is completely fused, catalysts are added; after reacting for a period of time, stirring is stopped; after the materials are taken out, extraction and centrifugation are performed, so that the LA chemical synthesis products are obtained; then, the LA chemical synthesis products are dissolved by acetic ester, so that the biodegradable bonding agent is obtained. The bonding agent has the characteristics that the preparation is simple; the relative molecular weight and the viscosity are controllable; the biodegradable performance is realized. The biodegradable bonding agent material can be used in the fields of adhesive tapes, leather, sticking paper, stationery, office, electronics, automobile edge trimming fixation, shoe industry, handwork ornament pasting and fixation and the like.
Owner:BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY

Selective absorbing dry method paper filter material for cigarette filter tip rod and preparation method thereof

The invention discloses a selective absorbing dry method paper filter material for a cigarette filter tip rod and a preparation method thereof. The selective absorbing dry method paper filter material is formed by processing 80-100 parts of base material fibers, 0-20 parts of adhesive and adsorbing materials of which the weight is 0.5 percent to 10 percent of that of the base material fibers through a dry method papermaking technology. The preparation method comprises working procedures of fiber net formation, adsorbing material coating and paper making and formation, that is to say, after fiber nets are formed by fibrous raw materials containing hot melting fibers in an air-laid manner and are pre-pressed, the adsorbing materials are evenly sprayed into accumulated fiber net layers, or are sprayed and coated on the front surfaces of the fiber nets after being mixed with the adhesive, and the fiber nets are formed in a rolled manner; after the adsorbing materials are sprayed and coated on the back surfaces of the fiber nets, glue is applied to the fiber nets, the fiber nets are additionally formed in a rolled manner, and then the paper filter material is obtained. By adopting the selective absorbing dry method paper filter material, harmful ingredients such as solid particle matters, nicotine and nicotinamide in cigarette smoke can be effectively reduced, the tar content can be markedly reduced, the cigarette smoking quality can be improved and the cigarette safety can be enhanced. The preparation method of the selective absorbing dry method paper filter material has the advantages of simple and convenient technology, easiness in operation and high practicality.
Owner:YUNNAN REASCEND TOBACCO TECH GRP

Structured wave-absorbing material and preparation method thereof

The invention discloses a structured wave-absorbing material and a preparation method thereof. The structured wave-absorbing material contains fiber with a micron-scale diameter and absorbent particles, wherein the fiber forms a three-dimensional network structure with adjustable and controllable porosity; and the absorbent particles are evenly covered in the three-dimensional network structure. The preparation method comprises the following steps of; mixing adhesives, fiber and the absorbent particles with water, and stirring at high speed to form uniform serous fluid; utilizing a wet papermaking process to make a precursor; and after drying the precursor, high-temperature sintering to form the structured wave-absorbing material with the absorbent particles covered by the paper-type micro fiber. The prepared structured wave-absorbing material has the characteristics of thinner thickness, high porosity, good flexibility, convenience in molding, strong absorbing capacity for electromagnetic wave; and the preparation process is simple and is low in cost. The structured wave-absorbing material can be applied to military and civil fields, the density and the weight of the wave-absorbing material are greatly reduced, the thermostable performance is good, the wave-absorbing efficiency can be improved, and the application prospect is broad.
Owner:SOUTH CHINA UNIV OF TECH

Production method for waterproof paper honeycomb compound sandwich board

The invention relates to a production method for a waterproof paper honeycomb compound sandwich board. The production method comprises the following steps: 1) preparing a gum dipping solution, namely dissolving an adhesive agent in a diluting agent to prepare the gum dipping solution; 2) dipping gum, namely placing a paper honeycomb core into the gum dipping solution for gum dipping treatment; 3) standing, namely naturally drying the gum-dipped paper honeycomb core until the gum dipping solution does not drop, and placing the paper honeycomb core onto a film; 4) drying, namely placing the paper honeycomb core and the film for 10-30 minutes at the temperature of 60-80 DEG C, moving away the film, and placing the paper honeycomb core for 1-2 hours at the temperature of 150-170 DEG C; and 5) pressing, namely hot pressing the paper honeycomb core, upper and lower skins and a bonding layer. According to the production method, the paper honeycomb core is dipped with the gum and correspondingly processed, so that the compound sandwich board produced by the paper honeycomb core is good in waterproof performance, water is not accumulated in the paper honeycomb core due to moisture invasion in the process of long-term use so as to avoid increment of thermal conductivity and degumming, and the performance of a product is improved.
Owner:SYST EQUIP CO LTD OF THE 28TH RES INST LI YANG

Rich mineral paper-based turnover box for cigarettes and processing technology thereof

The invention discloses a rich mineral paper-based turnover box for cigarettes and a processing technology thereof, and aims to provide a turnover box for cigarettes which is environment-friendly, reliable in quality and capable of being recycled and a processing technology of the turnover box for cigarettes which is simple in technology, low in manufacturing cost and reliable in quality. The turnover box for the cigarettes comprises a polygon cellular core board which is produced by taking the rich mineral paper as the raw material, rich mineral paper face plates adhered to two end surfaces of the polygon cellular core board, and RFID (radio frequency identification) electronic tags arranged on the rich mineral paper face plates. The processing technology of the invention comprises the steps of producing the polygon cellular core board by taking the rich mineral paper as the raw material; through the corona treatment and using the double-component glue as an adhesive, adhering the rich mineral paper as panel with the polygon cellular core board to manufacture the polygon cellular board rich mineral paper board, then slitting, edge sealing, impressing, printing, attaching the RFID electronic tags, and nailing box and shaping. The turnover box is suitable for loading multiple kinds of materials.
Owner:CHINA TOBACCO YUNAN NEW MATERIAL

Composite artificial board with anticorrosion performance, mould proof performance and high fire resistance and manufacturing method of composite artificial board

The invention discloses a composite artificial board with anticorrosion performance, mould proof performance and high fire resistance and a manufacturing method of the composite artificial board. Thecomposite artificial board is formed by veneer layers and a board blank layer. Each veneer layer is made of a wood material or a non-wood material, and plywood or a core-board or an oriented strand board or a straw board serves as the board blank layer. After being glued and compounded through a polyurethane glue agent, an aldehyde-free biomass glue agent or melamine formaldehyde glue, a water-proof agent, a mould-proof agent, a fire retardant and a tackifier, the veneer layers are evenly paved on the upper face and the lower face of the board blank layer, and the composite artificial board ismanufactured through high-temperature hot pressing treatment. According to the composite artificial board with anticorrosion performance, mould proof performance and high fire resistance, the servicelife is long, and the green and environment protection requirements are met; and the problems that due to the existing production process of directly pressing veneer artificial boards such as impregnated film paper veneer plywood, impregnated film paper veneer core-boards and impregnated film paper veneer oriented strand boards, the requirement for the surface quality of base material artificialboards is high, the physical and chemical property is poor, and the percent of pass of products is low are solved.
Owner:NANNING KETIAN NEW MATERIAL TECH CO LTD
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