54results about How to "Good same color" patented technology

The invention provides 3D science paper as well as a production method and production equipment thereof. The 3D science paper is prepared by soaking printing decorative paper serving as a raw material into glue with high transparency, wherein the glue comprises the following components in percentage by weight: 20-30% of polyurethane, 30-50% of acrylic resin, 1-3% of a cross-linking agent, 1-3% of a curing agent, 3-5% of a permeating agent, 1% of a flatting agent and the balance of water. The 3D science paper has an extremely good homochromatic effect, does not have chromatic aberration, is high in hardness, scratch-resistant, wear-proof and good in toughness, can be bent for 180 degrees without cracking, and is favorable for packaging. Moreover, the raw materials, aids, resin and the like in the production process of the product are water-soluble, so the 3D science paper is nontoxic and environmentally friendly.

The invention discloses a union dyeing method of a polyester-cotton fabric with indigo dye. The polyester-cotton fabric is dyed through the indigo dye in a two-bath two-step dyeing manner. The method including following steps: adding the indigo dye, sodium hydrosulfite and sodium hydroxide to a dye bath, increasing a temperature to 40-80 DEG C and maintaining the temperature for 10-50 min to enable the indigo dye to be reduced, adding a carrier and sodium chloride, putting the polyester-cotton fabric into the dye bath, increasing the temperature to 80-100 DEG C and maintaining the temperature for 20-90 min, adding the indigo dye, the sodium hydrosulfite and the sodium hydroxide to another dye bath, increasing the temperature to 40-80 DEG C and maintaining the temperature for 10-50 min to enable the indigo dye to be reduced, putting the dyed polyester-cotton fabric into the dye bath, increasing the temperature to 20-60 DEG C and maintaining the temperature for 30-60 min, and finally carrying out a water-washing process, a soaping process, a water-washing process and a drying process, or a drying process by air, to the dyed fabric. By means of the two-bath two-step dyeing method, the polyester-cotton fabric is dyed so that polyester and cotton fabric have a relative good identical color ability and a satisfactory dyeing depth can be achieved. The method is simple and feasible.

The invention relates to a blended fabric dyeing and finishing technology, and particularly relates to a dyeing and finishing technology of a Lyocell and cotton and spun silk blended fabric. The invention aims at providing a dyeing condition capable of well coordinating Lyocell and cotton and spun silk to produce a high-quality product. The dyeing and finishing technology of the Lyocell and cotton and spun silk blended fabric comprises the processes of pretreatment, dyeing and the like; the pretreatment process comprises desizing and bleaching, wherein the desizing is performed by an enzyme-oxygen cold batch technology, and desizing enzyme, a chelating dispersant, a dewaxing agent and a refining agent are added in the desizing process; and 100% hydrogen peroxide and a stabilizer are added in the bleaching process. Through the invention, the problems of difficult color register and long technological flow are successfully solved; and through the method, the dyeing flow of the fabric is more reasonable, the production is clean and environment-friendly, and the product quality is stable.

The invention discloses a homochromatic dyeing process for a chitin-containing viscose-fiber fabric. The method comprises the following steps: (S1) carrying out pretreatment: submerging the chitin-containing viscose-fiber fabric into isopropyl alcohol, adding a sodium hydroxide solution, carrying out uniform stirring, then, adding an etherifying agent CTA, carrying out a reaction with stirring, pumping off a solvent, carrying out water washing, and carrying out baking; (S2) carrying out reactive dyeing: submerging the fabric into a reactive dye dyeing solution, heating the reactive dye dyeing solution to a primary dyeing temperature, adding an organic solvent B, heating the solution to a dyeing temperature, then, adding organic base and sodium carbonate according to the volume of the reactive dye dyeing solution, then, cooling the solution to a color fixation temperature, carrying out heat preservation, cooling the solution to room temperature; (S3) carrying out aftertreatment: washing the fabric by water, carrying out soaping, carrying out water washing again, and carrying out air-drying. According to the homochromatic dyeing process for the chitin-containing viscose-fiber fabric, the defect that the dyeing rate of chitin viscose fibers is relatively high can be overcome, a uniform and consistent dyeing effect is obtained, and the homochromatic dyeing process has the advantages of high color fastness and simple process.