32results about "Special leathers manufacture" patented technology

Engineered animal skin, hide, and leather comprising a plurality of layers of collagen formed by cultured animal collagen-producing (e.g., skin) cells. Layers may be formed by elongate multicellular bodies comprising a plurality of cultured animal cells that are adhered and / or cohered to one another; wherein the elongate multicellular bodies are arranged to form a substantially planar layer for use in formation of engineered animal skin, hide, and leather. Further described herein are methods of forming engineered animal skin, hide, and leather utilizing said layers of animal collagen-producing cells.

Engineered animal skin, hide, and leather comprising a plurality of layers of collagen formed by cultured animal collagen-producing (e.g., skin) cells. Layers may be formed by elongate multicellular bodies comprising a plurality of cultured animal cells that are adhered and / or cohered to one another; wherein the elongate multicellular bodies are arranged to form a substantially planar layer for use in formation of engineered animal skin, hide, and leather. Further described herein are methods of forming engineered animal skin, hide, and leather utilizing said layers of animal collagen-producing cells.

The present invention provides aqueous composition comprising a multi-stage acrylic emulsion polymer having a first stage polymer of from 0.5 to 4 wt. %, based on the total weight of monomers used to make the first stage polymer, of a copolymerized carboxylic acid or salt group containing monomer, and having 10 to 30 wt. %, on total solids of the multi-stage acrylic emulsion polymer, of a second stage polymer of from 3 to 15 wt. % of a copolymerized hydroxyl group containing monomer, the first stage polymer having a glass transition temperature (Tg) by dynamic mechanical analysis (DMA) of less than −10° C. and the second stage polymer having a Tg (DMA) of greater than 80° C.; and (ii) from 25 to 75 wt. %, based on the total solids weight of the multi-stage acrylic polymer, of a polyurethane.

The invention discloses waterproof leather prepared via polymerization deposition of low-temperature plasmas and a preparation method of the waterproof leather. The method comprises the following steps: vaporizing siloxane monomers or crylic acid monomers or acrylate monomers or fluorinated acrylate monomers or fluorosilane monomers under the vacuum degree of 25Pa to 45Pa at the temperature of 25 DEG C to 50 DEG C; then adding the vaporized monomers into plasma reaction equipment according to a certain flow and reacting for 1 to 25 minutes under the discharge power within 0.15W / cm<2> to 1.5W / cm<2>; and depositing the monomers on the leather in the plasma reaction equipment, wherein the thickness of a waterproof membrane deposited on the surface of the leather in a polymerization manner is in a micron level or below the micron level, the static contact angle of the waterproof membrane is within 136 DEG to 155 DEG and the rolling angle of the waterproof membrane is within 7 DEG to 22 DEG, and stagger collagen fibers can be seen clearly by observing through a scanning electron microscope. The method is simple in treatment process, short in time, high in efficiency and low in energy consumption. The obtained waterproof membrane is thin, and not only can maintain the real leather feeling of the surfaces of stone washed leathers, suede leathers, double-purpose leathers and the like but also can maintain the sanitation performance of nature leathers.

The invention relates to the technical field of material manufacturing and particularly relates to a preparation method for a far-infrared material and a device. The preparation method includes steps of: S1: carrying out cooling and refrigeration treatment on a base material and keeping for a period of time t0 after a lowest temperature T0 is achieved; carrying out temperature-rising treatment on the refrigerated base material and carrying out polarization treatment in a temperature-rising period; S3: stopping the temperature-rising treatment and the polarization treatment, and naturally cooling the material to a normal temperature. The method is capable of greatly improving normal emittance of far-infrared rays, with a wavelength of 4 mum-16 mum, released by a common material, so that the normal emittance is approximate to or equal to a standard for the far-infrared material.

Disclosed is a control method for synchronized fabric circulation in a conveyer drive fabric dyeing machine. During a dyeing process of fabric, the fabric is driven by a fabric guide to move in a circulating manner and the time period for a cycle of circulation is set in consistency with the time period that a conveyor moving from a rear end to a front end so as to achieve synchronization that makes the circulation smooth. The control method is performed with a computer or a PLC control unit that is supplied with fabric length data or fabric weight data and fabric unit weight data and, based on such data, performs an automatic operation of computation and supply of a signal to speed controllers of the fabric guide motor and the conveyor motor to set the speeds thereof at a predetermined ratio with respect to each other for synchronized operations.

The invention relates to the technical field of leather production, in particular to a producing method for stretch-proof leather. The producing method comprises the sequential steps of taking soft leather materials, firstly coating the soft leather materials, drying the soft leather materials in a suspension mode, polishing the soft leather materials, lustering the soft leather materials and spraying color on the soft leather materials. Thus, the stretch-proof leather can be manufactured. In the first coat step, burned black wax and soft casein acrylic resin are dissolved into water to carry out roller coating treatment. In the polishing step, a polishing machine is used for polishing the soft leather materials. In the lustering step, a tumbling mill is used for lustering the soft leather materials. The stretch-proof leather obtained in the producing method is strong in stretch resistance and not prone to deforming in a using process.

The invention specifically discloses a method for processing cowhide mat patches, which includes the following steps: selecting leather materials, removing redundant fibers and hairs on the reverse side of cowhide, making and coloring process, mold opening and plate making and stamping forming, electric laser perforation, and mold Forming, sheeting, edge trimming, patching, precision routing, full edge wrapping of finished mats, trimming and shaping, flattening, and light emitting. The finished cowhide mat produced by the method of the invention has natural, beautiful, smooth, delicate, bright, good luster, good hand feeling, good air permeability, durable, can be flattened twice, is easy to take care of, and has the texture reproduced by genuine leather and texture. The cowhide mat patch is made of raw buffalo leather with the same material as the cowhide mat body, and the patterns and logo patterns are printed on the cowhide mat patch separately, which improves the quality and grade of the finished cowhide mat.

The invention provides a dry artificial leather making machine. The machine comprises a frame and a heat wheel mechanism arranged on the frame, wherein the heat wheel mechanism comprises a scraper mechanism, a heat wheel capable of rotating and an abutted wheel; the heat wheel is provided with a heat supply device; the outer circumferential surface of the heat wheel is a flat working surface; theworking surface of the scraper mechanism corresponding to the heat wheel is arranged above the heat wheel; and the working surface of the abutted wheel corresponding to the heat wheel is arranged at the lateral side of the heat wheel, and is arranged in front of the scraper mechanism on the rotating direction of the heat wheel. In the invention, scraper equipment, heat equipment, transmission equipment, joint equipment and molding equipment in the traditional process are ingeniously combined to the heat wheel mechanism, the heat wheel is shared in scraping, heating, transmitting, jointing andmolding processes, so that scraping, heating, transmitting, jointing and molding steps on paint and a matrix belt can be completed when the paint and the matrix belt pass through the heat wheel mechanism. The dry artificial leather making machine has short production line, and does not require release paper consumption in the producing process.

The invention provides a method for compositing leather on the surface of a bonder used by car door interior parts and containing modified diatomite. The method is characterized by spraying the bonder on the interior part surface needing leather compositing and then composting leather, wherein the bonder is prepared from the following raw materials in parts by weight: 57-62 parts of EVA (ethylene-vinyl acetate copolymer), 8-12 parts of epoxy resin, 12-16 parts of C5 petroleum resin, 3-5 parts of microcrystalline wax, 0.5-1 part of WPP type polypropylene wax, 1-2 parts of dimethyl carbonate, 2-4 parts of nanometer celestite powder, 7-10 parts of modified diatomite, 2-3 parts of modified rice hull ash, 1.3-1.6 parts of a silane coupling agent KH560, 0.2-0.4 part of ferrocene, 0.3-0.6 part of n-butyl methacrylate, 0.4-0.6 part of epoxidized soybean oil, 0.4-0.6 part of an antioxidant 264, 0.2-0.4 part of an antioxidant 616 and 0.2-0.4 part of an antioxidant 333. The method has the beneficial effects that the method adopts a molding process, achieves automatic trimming and is high in efficiency; and meanwhile, the specific bonder is adopted, has high bonding strength, is flat and can not bubble after being used for a long time.

The invention relates to a leather changing surface color with temperature, which at least comprises a leather base layer and a paint layer; the paint layer at least comprises a first paint layer thatcoats the leather base layer and a functional layer that coats the first paint layer, the functional layer has a reversible thermochromic agent, and the color of the functional layer changes when thetemperature of the functional layer reaches 30 to 80 DEG C. The invention also relates to a preparation method of the leather. The leather is applied to surface materials, such as automobile seats; when the temperature of the leather reaches a certain value in the range from 30 to 80 DEG C, the color of the functional layer changes to remind a user that the current leather temperature is too high.

The invention relates to a footwear comprising an upper part (UP) and a sole (101), the upper part (UP) being attached to the sole (101), the upper part being formed by at least two footwear defining parts, the at least two footwear defining parts comprising a vamp (102) and a quarter (103), wherein at least one of the at least two footwear defining parts are formed by a leather laminate (600), the leather laminate (600) being formed as a composite laminate having a leather layer (601) laminated to a reinforcing fabric (603) by means of an adhesive (602), and wherein the leather layer (601) is at least a part of an outer surface of the footwear.