131 results about "Grammage" patented technology

The invention relates to an electrospinning nano-fiber electret filtering material and its preparation method. The high-efficiency and low-resistsance nano-fiber electret filtering material having no interfibrous adhesion and having a fluffy three-dimensional netted intercommunication structure is prepared through controlling the component and the temperatures of a polymer solution in an electrospinning process and carrying out one-step forming in the nano-fiber forming rapid cooling process, wherein the gram weight of the above nanofiber layer is 0.01-70g/m<2>, and the porosity is not less than 80%. The surface electrostatic potential of the nano-fiber electret filtering material is 800-6000V, and the surface charges have lasting storage stability, the hydrophobic angle is greater than 150DEG, the filtering efficiency of the material to particles of 0.006-1[mu]m can reach above 99.999%, the piezoresistance is less than 20Pa, and the dust containing capacity is 300-3600g/m<2>. The preparation method is simple, and the filtering material has wide application prospects in the fields of individual protection mouth mask filtration, indoor air purification and filtration, and high efficiency/ultrahigh efficiency air filtration.

The invention relates to terylene coral fleece blanket fabrics and a processing method thereof, which belongs to the technical field of terylene fiber products and comprises voile weave and ground weave, the raw material used by the voile weave is DTY terylene filament in 133dtex/192f, 111dtex/192f or 111dtex/144f, and the raw material used by the ground weave is FDY terylene filament of 75dtex/24f, wherein the mass percentage of the DTY terylene filament occupied in the fabrics is 60-70 percent, and the mass percentage of the FDY terylene filament occupied in the fabrics is 30-40 percent. The invention can lead villus of the fabrics to be straight so as to have excellent lodging resistance and warmth retention property, and can obtain 150-250g/m<2> of gram weight of thread count and be suitable to fabricate household wares such as bathrobe, sleepwear, sheet, and the like. The method can ensure the advantages of the terylene coral fleece blanket fabrics, and can lead the terylene coral fleece blanket fabrics to have better sterilizing, antistatic and anti-allergic effects so as to meet the serviceability.

A recording material determination apparatus includes a first detection unit configured to detect a characteristic corresponding to a surface condition of a recording material based on a captured image of a surface of the recording material, a second detection unit configured to detect a characteristic corresponding to a grammage of the recording material based on an ultrasonic wave detected via the recording material by irradiating the recording material with an ultrasonic wave, and a conveyance unit configured to convey the recording material. The first detection unit and the second detection unit are located opposite each other with respect to the conveyance unit.

A binderless glass fiber mat suitable for use as a separator for valve regulated (“recombinant”) lead acid (“VRLA”) batteries is disclosed. The separator is produced by a dry process by collecting the fibers from fiberizing apparatus, without subjecting them to a wet paper making or other post forming process, and selecting portions of the collected fibers which are sufficiently uniform in thickness and grammage for use as battery separators. The fibers can be entwined to produce a superior separator material. Additives can be introduced during the collection process to enhance the properties of the separator. A battery comprises at least one stack of alternating positive and negative plates, with the separator between adjacent plates. Separators according to the invention are significantly more resilient and have longer fibers than otherwise identical separators made from different samples of the same glass fibers, but by a conventional wet paper making process.

A cardboard with great rigidity and low grammage, as well as a package made thereof, is described. The cardboard consists of a core, which is surrounded by at least one, preferably 1-3 outer plies, on each side. The cardboard has a grammage of 100-300 g/m2, a bending resistance index of at least 25 Nm6/kg3, and a Scott Bond z-strength of at least 100 J/m2. The core of the cardboard consists of chemi-thermomechanical pulp and has a density of 200-450 kg/m3 and the core constitutes 55-80% of the total grammage of the cardboard. The outer plies have a tensile stiffness index of 7.0-9.5 kgNm/g and mainly consist of chemical pulp.

An ink composition that can form high-quality images free of white streaks and harshness on actual printing paper, such as art paper, even at low resolution and that can reduce the occurrence of curling even with thin actual printing paper having a low grammage is provided.

An ink jet printing ink composition includes at least a colorant, water, an alcohol solvent, and a surfactant, wherein the alcohol solvent contains a poorly water-soluble alkane diol, a water-soluble 1,2-alkane diol, and a water-soluble symmetrical alkane diol having a hydroxy group at both ends.

The transponder with an electronic unit comprising an antenna coil (4) connected to a chip module (5) embedded in a multi-layer laminate support (1) comprises at least one flexible thermoplastic layer (2) disposed on both sides of the electronic unit wherein the multi-layer laminate support further comprises a non-woven foil (3) with a grammage of less than 25 g/m².

A recording medium determination apparatus that determines grammage of a recording medium by using an ultrasonic wave includes a transmission unit configured to output an ultrasonic wave having a predetermined frequency, a reception unit configured to receive the ultrasonic wave output from the transmission unit and transmitted through the recording medium and output a received signal, a calculation unit configured to calculate a signal having a peak component according to a cycle of the received signal, and a determination unit configured to determine the grammage of the recording medium based on the signal calculated by the calculation unit.

The invention relates to a high-wear-resistant anti-stripping electrostatic spinning nanofiber composite filter material and a spinning method thereof. The preparation method comprises the following step: in the electrostatic spinning process, performing one-step forming by controlling and regulating the solvent concentration/pressure difference/melting points of two different polymers/an electrostatic spray solvent, so as to obtain dense three-dimensional arc-hole structural composite filter material fully adhered to fiber lapping points, wherein the gram weight of a fiber layer is 0.01 to 30 g/m<2>, the wear resistance of the composite filter material is 600 to 3,000 circles, the anti-stripping intensity is 5 to 100 MPa, the filter efficiency to 0.008-2-mircon particles reaches more than 99.99%, the resistance pressure drop is below 25 Pa, and the clogging capacity is 100 to 3,000 g/m<2>. The spinning method has the advantages of simple preparation process and low cost, and the prepared composite filter material has wide application prospects in the fields of engine filtration, air compressor filtration, gas turbine filtration, indoor air purification and filtration, high-efficiency filtration and the like.

Automatic process for calibrating the single and double dose of ground and dispensed coffee by means of a specific grinder-doser integrating a weighing device with a load cell. The process is automatically and steadily carried out during the ordinary activity, with no interruptions, adapting the grinding time according to the actually detected grammages, in order to get closer as much as possible to the desired grammage in any use condition. The process, after a preliminary phase for temporary configuring the desired grammages and the grinding time, conceives self-calibration cycles continuously repeated, each of them comprising three sequential phases: a first phase for automatically checking the dispensing with progressive weight detections, a second phase for automatically processing the detected data for determining the correct grinding time, a following third phase for the automatic setting.

A web (16) running from an opening nip (K1) between a cylinder (10) and a supporting fabric (18) toward a roll (14), is supported by a negative pressure created by a blow box (30). In an intensified negative pressure region (34′), i.e. close to the disengaging point (40) between the supporting fabric and the cylinder, the pressure is greater than at a distance from this disengaging point. The negative pressure is controlled according to parameters which act on the runability of the web and which can be varied, such as web velocity, web solid contents, pulp composition, paper or paper board quality, web grammage, a characteristic of the web, such as porosity, traction acting in the web, or web tension, cylinder temperature, and/or the running situation, such as a web break, a threading situation, or a normal run, so the desired runability is maintained between the cylinder and the roll.

A method for making an opacity relevant grade paper or paperboard product, such as a communication type paper used for printing and writing applications, utilizes an effective amount of quaternized alkanolamine fatty acid ester compounds as an opacification aid to control the optical properties of the paper or paperboard product as a wet-end additive to a papermaking operation. Using the quaternized alkanolamine fatty acid ester compound can improve the opacity of the paper or paperboard product, maintain the opacity of the paper while reducing the use of other opacification aids, such as inorganic fillers and/or pigments, and allow for a reduction in paper grammage without a compromise in opacity. The improvements in paper optical properties are achieved without adversely affecting other characteristics of the paper product such as bulk value, tensile strength, tear index, and the like.

A grammage detection sensor which detects a grammage of a recording medium using an ultrasonic wave includes a transmitting unit configured to transmit the ultrasonic wave and a receiving unit including a first vibration member configured to receive the ultrasonic wave that is transmitted from the transmitting unit and passes through the recording medium. The receiving unit includes a guide member configured to guide the ultrasonic wave that passes through the recording medium to the first vibration member. A length from a surface of the first vibration member to a plane including an end plane of the guide member along a line that passes through a center of the first vibration member and is perpendicular to the first vibration member is approximately n times of one-half wavelength of the ultrasonic wave transmitted from the transmitting unit where n is an integer of one or greater.

The invention relates to a type of guiding hygroscopic hydro-entangled non-woven fabric used for surgical blood vessel operation, belonging to the weaving material technical field, and the guiding hygroscopic hydro-entangled non-woven fabric comprises a surface layer made of pearl line non-woven fabric, an interface layer made of plastic film, and a bottom layer made of spunbonded non-woven fabric, combined via hot rolling and bonding, wherein the upper layer fibre web of the pearl line non-woven fabric, directly in contact with patients, adopts the straight-paving technology, with weight accounting for two thirds of the surface non-woven fabric grammage; the lower layer fibre web adopts cross lapping technology, with weight accounting for one third of the surface non-woven fabric grammage; and the upper layer fibre web and the lower layer fibre web form the surface layer via hydro-entangled method. The guiding hygroscopic hydro-entangled non-woven fabric of the invention features thinness, high hygroscopicity, excellent diversion performance, and great antibiosis function. Moreover, the guiding hygroscopic hydro-entangled non-woven fabric has no fluff, is lint-free, and does not stick to the wound.

A grammage measuring apparatus includes a dielectric resonator which is arranged only at one surface side of a sample; a shielding container with which the dielectric resonator is substantially covered except for a sample measuring surface; a microwave excitation device which causes the dielectric resonator to generate an electric field vector; a detection device which detects transmission energy or reflection energy by the dielectric resonator; a storage device in which a calibration curve indicating a resonance frequency shift amount for a grammage is stored; and a data processing device which calculates the grammage of a measuring sample from the calibration curve and measurement result of the resonance frequency shift amount of the measuring sample.

The present invention provides a double-sided pressure-sensitive adhesive (PSA) sheet that is provided with both adhesion performance and re-peelability that enables the PSA sheet to be preferably used for scheduled recyclable parts. The double-sided PSA sheet 1 is provided with a substrate 10, PSA layers 21 and 22 each applied to each side of the substrate 10, and a release liner 31 laminated onto at least the PSA layer 21. The PSA layer 21 contains a PSA component synthesized in an organic solvent. The release liner 31 has a release layer composed of a silicone release agent on at least the side that contacts the PSA layer 21. The release layer has an amount of silicone transfer of 10 kcps or less per unit surface area equivalent to a 30 mm diameter circle. The substrate 10 is composed of a non-woven fabric which has a grammage of 10 to 25 g/m², tensile strength in the lengthwise direction and tensile strength in the widthwise direction both falling within the range of 9 to 20 N/10 mm, and a grain ratio of 70 to 140%.

A digital glaze for high grammage, without the use of anti-settling agents, referred to as digital glazes for digital inkjet printing techniques to apply high grammage, maintaining the same aesthetic and technical characteristics obtained with traditional glazes and non-digital application techniques. No anti-settling agents are used in the composition to prevent the digital glaze from being thixotropic and creating problems in the inkjet printing. The composition includes at least one medium that is liquid at ambient temperature, formed by a mixture of water and polar solvents and/or solvents of medium to low polarity, having a percentage by weight of between 20 and 70% of the total weight of the digital glaze; and at least one mixture of ceramic raw materials and/or frits as a glaze-forming material, having a percentage by weight of between 30 and 80% of the total weight of the digital glaze.

The invention discloses a high-precision method for controlling the uniformity of discharging of an extruder. The method comprises the following steps: inputting a grammage parameter of a product in a storage of a controller, utilizing the controller to collect and store the rotating speed of the screw of the extruder and the flow amount A of the raw materials in unit time metered by a weighing device at the last time; calculating the discharging amount B every time the screw of the extruder rotates for a circle based on the flow amount A of the raw materials in unit time, and utilizing the controller to adjust the rotating speed of a pull roll at any time according to the change of the B so as to meet the grammage parameter of the product. The method disclosed by the invention has the advantage of calculating the corresponding discharging amount every time the screw of the extruder rotates for a circle by using calculated weight (parameter A) of the raw materials entering the extruder in unit time in the prior art, thereby adjusting the rotating speed of the pull roll of the discharging port of the extruder; and when the discharging amount every time the screw of the extruder rotates for a circle has a certain deviation, the controller can adjust the rotating speed of the pull roll, thereby greatly improving the control precision which can be improved by one order of magnitude.

The invention discloses a method for preparing warming composite material. The invention provided method using a widely-known method of producing cloth melt-blown with non-woven, Producing any one or two of polypropylene, polyethylene glycol terephthalate, polybutylene telephthalate or polylactic acid superfine fiber into superfine fiber then melting and spraying onto the cotton for non-weaving cloth, Denier range of the superfine fiber is one to five Mum, The average denier is three to four Mum, Gram weight of the melt-blown with non-weaving cloth is 30 to 50 gram for every square meters; The using the widely-known adhesive and a composite method to composing the superfine fiber melt-blown non-weaving cloth with polyfluortetraethylene micropore film together, And then the warming composite material is prepared; The gram weight of the polyfluortetraethylene micropore film is 15 to 25 gram for every square meters, Dosage for a certain unit area of the adhesive is two to four gram for square meters. Products produced by using the invention provided method has characteristics of warming, water proofing, wind proofing, ventilating, moisture permeable, comfortable and portable.