495results about "Inorganic fibres/flakes" patented technology

A process of making a paper or nonwoven article is provide. The process comprising:

• • a) providing a fiber furnish comprising a plurality of fibers and a plurality of binder microfibers, wherein the binder microfibers comprise a water non-dispersible, synthetic polymer; wherein the binder microfibers have a length of less than 25 millimeters and a fineness of less than 0.5 d/f; and wherein the binder microfibers have a melting temperature that is less than the melting temperature of the fibers;
  • b) routing the fiber furnish to a wet-laid nonwoven process to produce at least one wet-laid nonwoven web layer;
  • c) removing water from the wet-laid nonwoven web layer; and
  • d) thermally bonding the wet-laid nonwoven web layer after step (c); wherein the thermal bonding is conducted at a temperature such that the surfaces of the binder microfibers at least partially melt without causing the fibers to melt thereby bonding the binder microfibers to the fibers to produce the paper or nonwoven article.

A method of forming a multilayer insulation material formed of an acoustical composite layer and a first thermal layer is provided. The acoustical and insulting layer is formed of a polymer based thermoplastic material and reinforcing fibers. Preferably the reinforcing fibers are wet use chopped strand glass fibers (WUCS). The acoustical composite layer may be formed by opening the WUCS fibers, blending the reinforcement and polymer fibers, forming the reinforcement and polymer fibers into a sheet, and then bonding the sheet. A first thermal layer formed of one or more polymer based thermoplastic organic materials is then positioned on a first major surface of the acoustical composite layer. A second thermal layer of polymeric fibers may be optionally positioned on a second major surface of the acoustical composite layer. The multilayer acoustic material may be utilized in semi-structural and acoustical applications.

A paper or nonwoven article is provided comprising a nonwoven web layer, wherein the nonwoven web layer comprises a plurality of fibers and a plurality of binder microfibers, wherein the binder microfibers comprise a water non-dispersible, synthetic polymer; wherein the binder microfibers have a length of less than 25 millimeters and a fineness of less than 0.5 d/f; and wherein the binder microfibers have a melting temperature that is less than the melting temperature of the fibers.

The invention discloses a paper-imitating biodegradable resin and a preparation method. For improving the degradability and natural recoverability of paper-imitating materials and making the paper-imitating materials have similar lightness, foldability and printing and writing performance as the conventional paper. The paper-imitating biodegradable resin uses mineral fibers, vegetable fibers and starch fibers as main components, and concretely comprises the following components in part by weight: 40 to 70 parts of mineral fibers, 10 to 30 parts of vegetable fibers, 5 to 20 parts of starch fibers, 5 to 15 parts of biopolymer, 3 to 5 parts of modifier, 3 to 5 parts of compatibilizer and 3 to 8 parts of processing assistant. The mineral fibers, vegetable fibers and starch fibers are interweaved through thermoplastic processing, and the preparation process is clear and pollution-free. The paper-imitating biodegradable resin can be processed into various paper-imitating products by hot plasticizing equipment, and the products, when discarded, can be swallowed and decomposed by microbes without polluting the environment.

The invention relates to a method for preparing enamel paper. Through the addition of cellulase, the preparation method effectively reduces energy consumption of pulping and improves pulp quality; a mineral fiber ingredient is used to replace wood fiber so as to save wood resource and simultaneously reduce production cost; and the prepared enamel paper has anti-counterfeit function.

The invention relates to filter paper of an energy-saving and environment-friendly filter and a making method thereof. The filter paper is made from an energy-saving and environment-friendly ceramic powder material, a silane coupling agent, a dilute, a sizing agent and wood pulp. The filter paper can be made into an air filter and a fuel filter so as to improve the power performance by 6-12%, save the fuel by 2-5% and reduce pollutants in discharged tail gas by 16-47%.

A mold resistant gypsum panel having improved mold- and fungal-resistance to the gypsum panel facing paper is provided. Mold-resistant gypsum panels include a gypsum core formed from a gypsum slurry that has voids as a result of foaming of the gypsum slurry. A first paper is located on one side of the gypsum core and a second paper opposes the first paper. A first paper comprises at least one liner ply and at least one filler ply. A second paper also comprises at least one liner play and at least one filler ply. The first and second papers may be substantially the same. At least one of the first paper and the second paper also includes a biocide having 75% retention of the biocide. Also included in at least one of the first and second paper are a retention aid and a sizing agent.

A process for forming thermoplastic composites that uses wet use chopped strand glass is provided. Wet reinforcement fibers such as wet chopped strand glass fibers are opened by passing the fibers consecutively through a first opener, a condenser, and, optionally, a second opener. The opened reinforcement fibers are mixed with a resin and transferred to a first sheet former. The resin is preferably polypropylene fibers. An optional second sheet former may be used to form a final composite having high structural integrity. The resulting sheet may be optionally passed through a needle felting machine for mechanical strengthening. The sheet is then passed through a thermal bonder to thermally bond the reinforcement glass fibers and resin. The composite product that exits the thermal bonder can be subsequently used as a reinforcement in a molding process to produce composite articles.

The invention provides wave-absorbing paper and a preparation method and application thereof. The wave absorbing paper contains 0.1-95 wt% of a fiber wave-absorbing agent and 5-99.9 wt% of wave-transparent fiber. The fiber wave-absorbing agent and wave-transparent fiber are mixed and prepared into the wave-absorbing paper by a papermaking process; and then the wave-absorbing paper as a lattice wall material is prepared into a wave-absorbing core sandwich; and then the wave-absorbing core sandwiches prepared from wave-absorbing paper with different fiber wave-absorbing agent content are separated by wave-permeable layers; and finally the entire structure is impregnated and cured to obtain the wave-absorbing material. The wave-absorbing material of the invention has the advantages of high wave-absorbing efficiency, stable wave-absorbing property, wide absorption band, and light weight and high strength.

The present invention is generally directed to an opaque tissue product and a process for making the same. The tissue products of the present invention comprise thermally expandable microspheres which impart increased opacity to the tissues. The thermally expandable microspheres are added to a fiber furnish during the wet end of a manufacturing process for bath tissue, facial tissue, towels, or the like.

A macroscale, self-supporting, composite laminate sheet includes individual, layered graphene oxide sheets and a polymer in spaces between the sheets. This composite product can be fabricated by combining a suspension of individual graphene oxide sheets and a solution of polymer, passing the resulting fluid through a fluid-permeable support, and assembling the graphene oxide sheets and polymer as a laminate sheet by flow-directed assembly. The laminate is dried and released from the membrane filter as a self-supporting thin films.

The invention relates to filter paper for an environmental-friendly automobile filter. The filter paper for the environmental-friendly automobile filter is prepared from the following components in parts by weight: 1-5 parts of far infrared ceramic powder, 2-20 parts of sepiolite nanofibers, 0.8-1.6 parts of a silane coupling agent, 0.8-1.6 parts of a diluent, 9-20 parts of a sizing agent and 60-96 parts of wood pulp. Air, fuel oil and engine oil filters made of the filter paper are obvious in comprehensive effect; pollutants generated by exhaust gas emission of an automobile are reduced by 16-47%; the dynamic performance is improved by 6-12%; fuel oil can be saved by 2-5%; the emission standard reaches the European IV standard.

A composition of a multiple-layered ceramic fiber filter paper and method for manufacturing for use in a filter apparatus removes particulate from high temperature gas streams. In this application, ceramic fibers of varying diameters and lengths are combined in such a manner to yield different specific average pore sizes in segregated locations in the filter paper. The fiber combinations are formed into a paper sheet using a method that produces two or three porosity zones with different average pore sizes in each layer or porosity zone. The porosity gradient from large at gas stream entry to fine at gas stream exit increases particle-holding capacity while reducing the filtered gas backpressure experienced in single sized porosity layer media.

The invention discloses a stone papermaking method, which is characterized by comprising the following steps: adding 2 to 2.5 weight percent of auxiliary agent such as stearic acid and the like into 70 to 80 percent of natural inorganic ore powder such as heavy calcium, light calcium, talcpowder, titanium white powder and the like serving as main raw materials to modify the raw materials, adding 18 to 11.5 weight percent of polyethylene and 9 to 5 weight percent of polypropylene into the raw materials, and mixing, plasticizing and kneading the mixture to form a bulk material; and performing double-fold feed on the bulk material, pressing the bulk material into a paper film extruder, injecting 0.5 weight percent of butane and 0.5 weight percent of nucleating agent into the extruder, mixing and heating the mixture, extruding a paper film, then foaming, blowing, drawing, cooling and shaping the paper film to form a paper film base material, and forming a stone paper finished product through corona, coating, drying and finishing. The gram weight of stone paper is reduced by physical micro-foaming technology. The method has the advantages of simple manufacturing process, low cost, dry production, use of few water circulating cooling machines, no three-waste discharge and pollution avoidance.

The invention relates to an inorganic fiber softening reinforcing agent and a preparation method thereof. The method is to lead H2O2, polyvinyl alcohol and potassium hydroxide to react for 2 to 4 hours at a temperature between 50 and 60 DEG C, adds an etherifying agent after the reaction to react for 4 to 8 hours at a temperature between 50 and 70 DEG C, and regulates the pH value of the solution to 7 to 8 so as to obtain the inorganic fiber softening reinforcing agent. The softening reinforcing agent is applicable to various inorganic fiber materials produced by physical or hot melt method, including basalt fibers, aedelforsite fibers, meerschaum fibers, gypsum fibers, flyash fibers and glass fibers. The softening reinforcing agent can improve the softness and strength of inorganic fibers, improve the defect of easy fracture of the inorganic fibers in processes of pulping, dispersing and transporting, change the charge property of the inorganic fiber surface, reinforce the bonding force of the inorganic fibers and plant fibers, and greatly improve application performance of the inorganic fibers in making paper, insulating wool boards and the like by wet method.

Conductive nonwoven webs are disclosed. The nonwoven webs contain pulp fibers combined with conductive fibers. In one embodiment, the webs are made in a wetlaid tissue making process.

The invention discloses heating non-combustible cigarette paper and a preparation method thereof. The preparation method of the heating non-burning cigarette paper comprises the following steps: 1) pulping the plant fiber with the length of 0.5 to 4mm, or adding the appropriate proportion of inorganic fiber; 2) adding the inorganic filler in the process of dilution of the pulp, wherein the addition ratio of the inorganic filler is 5 to 50% of the mass of the pulp; 3) sizing the paper to improve water and oil resistance, and cigarette paper is quantified at 50 to 120 g/m<2>. Compared with the existing heated non-combustible cigarette paper that is heated at 350 DEG C, the non-combustible cigarette paper of the present invention has very few yellow stitches, and no tar spots and carbonization, while the entire surface of the existing non-combustible cigarette paper turns yellow, with large tar penetrating and carbonized. In addition, the non-combustible cigarette paper of the present invention is rarely present broken in actual production, and there is almost no deformation and wrinkling after being sucked as the heated cigarette paper.

The present invention provides a modified wollastonite mineral composite fibre for making paper and its paper-making method. It includes the following steps: breaking wollastonite raw ore to obtain the thin-long fibre whose grain size is 5-20 micrometer and the ratio of mid-diameter:length=1:6-30, and according to the ratio of alkali or salt of aluminium: alkali or salt of sodium=1:1 adding modification agent whose added quantity is 3-10% of wollastonite mineral composite fibre weight so as to obtain the wollastonite mineral composite fibre covered with modification agent. In the course of preparing pulp in paper-making process 5-50% of modified wollastonite mineral composite fibre and 50-95% of plant fibre and paper-making auxiliary material are added, it can reduce production cost.

This invention relates to aramid papers, and a process for making such papers, the papers comprising 5 to 65 parts by weight aramid fiber, 30-90 parts by weight aramid fibrids, and 1-20 parts by weight of conductive filler, based on the total weight of the aramid fiber, fibrids, and filler; the papers having an apparent density of not more than 0.43 g/cm³ and a tensile index not less than 60 Nm/g.

The invention relates to a method for preparing a composite paper base material with functions of adsorbing and degrading organic matters, and an application of the composite paper base material. The material consists of 30 to 50 percent of metal oxide powder, 15 to 35 percent of absorbent powder, 0 to 25 percent of inorganic fiber, 10 to 30 percent of paper pulp and 0.5 to 5 percent of dual retention aid. When the material is prepared, the metal oxide powder, the absorbent powder, the inorganic fiber and the paper pulp are mixed into a suspension liquid with the concentration of between 2 to 8 percent, the suspension liquid is subjected to mediation for 5 to 30min, and added with the dual retention aid to dilute until the concentration is reduced down to 0.5 percent so as to prepare wet paper sheets; the paper sheets are subjected to pressing and drying to prepare the composite paper base material. The composite paper base material prepared is further processed into a paper component, and the paper component is placed in a low concentration volatile organic compound environment to realize continuous photocatalysis degradation. By utilizing the paper base material of the invention, the problems that the cost is high and the pulverization occurs due to the friction between granular materials when the zeolite is used as a carrier to prepare compound catalytic materials are resolved, and the paper base material can also adsorb low concentration volatile organic gases.

A method of forming a chopped strand mat formed of bonding materials and wet use chopped strand glass fibers (WUCS) which demonstrate a reduced occurrence of static electricity is provided. In one exemplary embodiment, the occurrence of static electricity on the glass fibers is reduced or eliminated by increasing the total solids content on the glass fibers, such as by applying an increased or excess amount of size composition to the glass fibers. Alternatively, an anti-static agent may be added directly to the sizing composition and applied to the glass filaments by any suitable application device. The antistatic agent may be applied to the wet chopped strand glass prior to chopping the strands or as the wet chopped strands are packaged. The static free wet use chopped strand glass fibers may be used in dry-laid processes to form chopped strand mats having a reduced tendency to accumulate static electricity.

The invention discloses high-temperature-resistant non-combustion cigarette paper and a preparation method thereof. The preparation method of the high-temperature-resistant non-combustion cigarette paper comprises the following steps: (1) glue application in pulp: a glue application agent is added into the pulp after pulping, and the solid content is controlled to be 1 to 5 percent of the specified quantity of raw paper; (2) surface glue application after papermaking; (3) single-side or two-side coating after glue application, wherein the coating quantity is 5 to 50g/m<2>; fixed quantity before paper sheet coating is 30 to 120g/m<2>. On the basis of the existing cigarette paper production process, the goal of resisting high temperature is achieved through performing glue application and coating treatment on the cigarette paper, so that the cigarette paper can be applied to the heating on non-combustion cigarettes. The high-temperature-resistant non-combustion cigarette paper obtained by the preparation method can be used at 300 to 500 DEG C; in the use process, the cigarette paper hardly generates color change, avoids tar penetration and does not deform; the high-quality requirement of heating non-combustion paper for cigarettes is met.