58results about How to "No curl" patented technology

A process for preparing the non-adhesive substrate with dual surface copper foil players includes such steps as coating the additive compound for preventing ion immigration on the rough surface of copper foils, reaction between thermoplastic prepolymer resin and thermosetting master resin, and heating while pressing for iminating at 300 deg.C for 30 min.

A flexible printed wiring board having a stable quality, not generating curls on a film even after circuit process on a conductor side, and a method of manufacturing such flexible printed wiring board are provided. The flexible printed wiring board is provided with a base layer, which is composed of at least one type of low thermal expansion polyimide resin, between a bottom layer contacting the conductor and a top layer on the opposite side to the conductor. The bottom layer and the top layer are composed of a thermoplastic polyimide rein having a larger thermal expansion coefficient than that of the base layer, and a thickness P1 of the bottom layer and a thickness P2 of the top layer satisfy a condition of P1 H05K 1 / 03 0 10 1 2005 / 3 / 9 1947476 2007 / 4 / 11 000000000 Nippon Steel Chemical Co. Japan Higasayama Ichiro Sato Seiji wangjian 11038 The Patent Agency of the Chinese Council for the Promotion of International Trade (CCPIT) No.1 Waidajie, Fuxingmen, Beijing 100086 Japan 2004 / 3 / 9 065854 / 2004 2006 / 9 / 8 PCT / JP2005 / 004100 2005 / 3 / 9 WO2005 / 086547 2005 / 9 / 15 Japanese

The invention discloses a semi-permeable membrane support material. The semi-permeable membrane support material is a sheet-shaped material obtained by heating and pressurizing after laminating two layers of non-woven fabric with different aspect ratios k. A k value of the non-woven fabric layer adjacent to the coating surface side of the sheet-shaped material is greater than 1.5, and the k valueof the non-woven fabric layer adjacent to the non-coating surface side is less than 1.0. The support material does not generate crimping after hot-pressing while excellent performance of air permeability, tensile strength, no fluff and the like is guaranteed, after the coating surface thereof is coated with a polymer membrane at the same time, a crimping phenomenon does not occur, and a situationadverse to processing is effectively avoided from occurring in a production process.

Provided are: a gas-barrier laminate film which can be produced with good productivity, has high transparency and high gas barrier properties, has excellent interlayer adhesion strength among constituent layers thereof, and cannot be curled; and a process for producing the film. The gas-barrier laminate film comprises an inorganic thin film layer formed by a vacuum deposition technique, an inorganic thin film layer formed by a chemical deposition technique and an inorganic thin film layer formed by a vacuum deposition technique which are formed in this order on at least one surface of a base film, wherein each of the inorganic thin film layers formed by the vacuum deposition technique has a thickness of 0.1 to 500 nm inclusive and the inorganic thin film layer formed by the chemical deposition technique has a carbon content of not less than 0.5 at% and less than 20 at.% and a thickness of smaller than 20 nm.

The invention provides a continuous wood modification heat treatment process. The process comprises the following steps: stacking initial wood blanks on a trolley at intervals, applying pressure to the tops of the initial wood blanks to enable all the positions of the initial wood blanks to be stressed evenly and kept flat, and sequentially performing the following treatment steps of preheating treatment, heating treatment, drying treatment, carbonization treatment, slow cooling treatment, rapid cooling treatment and rewetting treatment. Each treatment step comprises a plurality of kilns, thekilns in the steps S2-S4 are arranged in an equal-gradient heating mode, and the kilns in the steps S5-S7 are arranged in an equal-gradient cooling mode. The invention provides a continuous wood modification heat treatment system. The continuous wood heat treatment system comprises a plurality of kilns, a trolley, a transmission device for driving the trolley to move, and a microwave and other heat source heating device. The process and the system provided by the invention provide high-quality wood which is low in energy consumption, short in production period, uniform and consistent in carbonization degree of the interior and the surface, high in strength and stable in performance, and the system is low in production cost and suitable for mass production.

The invention discloses a high-dielectric grain boundary layer ceramic material and a preparation method of a grain boundary layer ceramic substrate. The ceramic material comprises a main body material strontium titanate, a donor materials La2O3 and Nb2O5, a sintering aid SiO2 and Li2CO3, and an acceptor material which is one or more of Bi2O3, CuO and ZnO; the sintering aid is used for reducing the sintering temperature of the ceramic and promoting crystal grain development; and the acceptor material is used as a grain boundary insulation coating material for oxidation sintering. Based on the ceramic material, the preparation of the grain boundary layer ceramic substrate is completed through secondary sintering, namely reduction semiconductor sintering and oxidation grain boundary layer insulation sintering. The ceramic substrate is prepared by doping the sintering aid into the ceramic material and adopting a secondary sintering mode, so that on one hand, the energy is saved, and on the other hand, the larger particle size can be obtained at a lower sintering temperature, and the dielectric constant is favorably improved; and meanwhile, in the grain boundary insulation process, ZnO is added, and the insulation resistance and the insulation strength of the product are improved.

The present invention provides a flexible copper-polyimide laminate including a linear random block polyimide layer formed on the at least one side thereof, the linear random block polyimide layer comprising 0.25 to 90.25 mol.% of a repeating unit l represented by the formula 1, 0.25 to 90.25 mol.% of a repeating unit m represented by the formula 2, 0.25 to 90.25 mol.% of a repeating unit n represented by the formula 3, and 0.25 to 90.25 mol.% of a repeating unit o represented by the formula 4. The flexible copper-polyimide laminate having a polyimide layer is free from curls and excellent in dimensional stability, tensile property, folding endurance and resistance to flexural fatigue with low moisture content.

The heat insulating composite foamed phenolic plate for building includes one heat insulating foamed phenolic plate produced with foamed phenolic resin 100 weight portions, polyurethane 10-25 weight portions, epoxy resin 0.5-5 weight portions, fire retardant 10-20 weight portions, surfactant 0.5-2 weight portions, polyglycol 5-15 weight portions, glass fiber 0.5-2 weight portions, foam homogenizing agent 5-10 weight portions, foaming agent 5-10 weight portions and acid curing agent 5-10 weight portions; and one sprayed layer in the surface of the heat insulating foamed phenolic plate and comprising cement 100-150 weight portions, water 80-100 weight portions, emulsion of acrylate copolymer 90-110 weight portions, hydroxyethyl cellulose 3-6 weight portions and defoaming agent 0.5-2 weight portions. The heat insulating composite foamed phenolic plate has high toughness, less pulverizing, high strength and good construction performance.

The present invention relates to a cleaning wiper for glass, with which moisture, stains, water marks, hand stains, grease, and the like on glass products (hereinafter referred to as cleaning target surfaces) such as liquid crystal and glass can be wiped with convenience.

The invention discloses a method for preparing a double-sided copper foil adhesive-free base material, especially for preparing a condensation thermoplastic double-sided copper foil adhesive-free base material, which is prepared by anti-ion migration additive compound on the roughened surface of the copper foil. Treatment and coating, and then through the reaction of thermoplastic prepolymer resin and thermosetting pre-main resin, compound heating, pressurization, and imidization at 300 ° C for 30 minutes to obtain ultra-thin double-sided copper insulating layer Double-sided copper foil adhesive-free substrate. The method of the invention has simple process and low cost, and the volume resistivity of the prepared insulating layer is 1×1014Ω·cm, which can meet the requirements of multilayer flexible circuit board products.

The invention discloses a high-barrier high-temperature-resistant packaging film capable of avoiding curling after sterilization. The packaging film comprises an upper film and a lower film, wherein physical crosslinking treatment is performed on the upper film to enable the melting point to reach 180-190 DEG C; the upper film comprises a CPP (chlorinated polypropylene) layer, and a first bonding layer, a first PA (polyamide) layer, an ink layer, a second bonding layer and a PE (polyethylene) layer which are sequentially arranged on the lower surface of the CPP layer; the lower film comprises a CPP layer, a third bonding layer and a nine-layer coextrusion layer; and in a heat sealing process of the upper film and the lower film, the PE layer of the upper film and the nine-layer coextrusion layer of the lower film are combined through heat sealing. Through the physical crosslinking treatment on the surface of the upper film, the melting point of the upper film can reach 180 DEG C or so; in the current sterilization and disinfection environment, the smoothness of the film can be kept, and the film can not curl; since the nine-layer coextrusion layer is used and multiple PE layers are arranged in the nine-layer coextrusion layer, the controllable thickness of each layer is realized on the premise of keeping an overlaying function, thereby realizing controllable cost; and since an EVOH (ethylene vinyl alcohol) layer and a PA layer are arranged, the EVOH layer has very strong barrier property, and the PA layer has puncture resistance.

The invention discloses a preparation method of an inorganic fireproof door core material, and belongs to the technical field of fireproof materials. The preparation method of the inorganic fireproof door core material is characterized by comprising the following steps that 1, cement slurry is prepared, wherein 1 part of sulfate aluminum cement, 0.002-0.01 part of water reducing agent, 0.002-0.01 part of basalt fiber and 0.3-0.4 part of water are mixed to be uniform for use; 2, a foam body is prepared, wherein a foaming agent is diluted, and the foam body is prepared; 3, the foam prepared in the second step and the cement slurry prepared in the first step are mixed according to the proportion of 2-6 mL / g, stirring is conducted to be uniform, the obtained mixture is poured into a mold, standard curing is conducted for 24 h, demolding is conducted, and then natural curing or standard curing is conducted for 7-28 days, and the inorganic fireproof door core material is obtained. When the inorganic fireproof door core material is subjected to a flame, dripping matter does not exist on the surface, the phenomena of curling and melting do not exist, and the inorganic fireproof door core material has the advantages of being good in use property and fireproof property and environmentally friendly.

The invention relates to a device and method used for manufacturing a high precision low loss optical fiber Y-branch splitter. The device is characterized by comprising a computer, a data connecting line, a program control high precision movable platform, a high strength connecting line, a pulley, a fixing frame, a quartz capillary tube, a heavy object clamp, a combustion nozzle, a nozzle supporting rod, a support base, a support rod, a support lower clamp, a support upper clamp, a Y-shaped rubber pipe, a first mass flow controller, a first mass flowmeter, an oxygen tank, a second mass flow controller, a second mass flowmeter and a hydrogen tank, the computer is connected with the program control high precision movable platform through the data connecting line, an optical fiber to be fusedis placed in the quartz capillary tube, and the program control high precision movable platform is connected with one end of the optical fiber to be fused placed in the quartz capillary pipe throughthe high strength connecting line, the pulley and the fixing frame in sequence. Fusing conditions of different optical fibers can be satisfied, Y-branch splitters with different coupling degrees can be manufactured, and the practicality difficulty is small.

The invention discloses a semi-permeable membrane support material, which is a sheet material obtained by laminating two layers of non-woven fabrics with different aspect ratio k and then subjected to heat and pressure treatment, and the non-woven fabric on the side of the sheet material near the coated surface The k value of the layer is greater than 1.5, and the k value of the nonwoven layer near the non-coated side is less than 1.0. While ensuring excellent air permeability, tensile strength, and lint-free properties, the support material will not curl after hot pressing. At the same time, after coating the polymer film on its coating surface, it will not curl, effectively avoiding Unfavorable conditions occur during the production process.

The invention discloses a preparation method of anti-curling and easy-to-strip release paper for leather and belongs to the technical field of preparation of release paper. According to the method, firstly, fresh leaves of pittosporum tobira are made into granules and then mixed with a glutaraldehyde water solution for fixation, the mixture and n-hexane are stirred and heated and then are evaporated to be dried, a pittosporum tobira leaf wax concentrated solution is obtained and subjected to pulping, grinding and ultrasonic dispersion treatment with populus euphratica wood-pulp boards and deionized water, modified wood pulp dispersion size is prepared and subjected to papermaking and squeezing treatment, dried modified paper is obtained, a coating liquid is prepared from polyvinyl alcohol as a main raw material, the modified paper is coated with the coating liquid, and the anti-curling and easy-to-strip release paper for leather can be obtained after the paper is dried and cooled. A preparation process is simple, the prepared release paper for leather is moderate in strength and good in release property and doesn't easily curl in the moisture environment or under the wet condition, and a prepared leather product has good surface gloss, touches well and has broad application space.