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.

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 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.