6results about How to "Improve tanning effect" patented technology

The invention provides a leather ion piezoelectric device and a preparation method and application thereof, and belongs to the technical field of new energy conversion, the leather ion piezoelectric device comprises a device body, and two sides of the bottom of the device body are respectively provided with a stress electrode and a reference electrode; the preparation method of the leather ion piezoelectric device comprises the steps that raw hide obtained after pickling is subjected to tanning, retanning and electrolyte treatment, ion leather is obtained, the ion leather is cut, a device body is manufactured, a stress electrode and a reference electrode are attached to the two sides of the bottom of the device body respectively, and the leather ion piezoelectric device is obtained. The leather ion piezoelectric device provided by the invention has excellent mechanical property, damp-heat-resistant stability, durability and corrosion resistance, and is convenient to transport, store and reuse; the ion piezoelectric device prepared through the preparation method is good in mechanical performance and durable temperature performance, suitable for mechanical energy collection and power generation in a more complex special environment and an actual scene bearing large pressure, and wide in application range.

The invention provides an ecological fur tanning method, and relates to the technical field of fur tanning. The ecological fur tanning method specifically comprises the following steps: S1, preparing raw materials; s2, soaking treatment; s3, biological degreasing; s4, carrying out softening treatment; s5, tanning with a bio-based epoxy active tanning agent; s6, tanning liquid management; s7, cleaning and drying; and S8, finishing and modifying. According to the method, the bio-based epoxy active tanning agent is adopted, use of tanning agents capable of releasing harmful substances such as formaldehyde and chromium in the traditional tanning process is avoided, greening of the tanning process is achieved, meanwhile, tanning waste liquid is prone to biochemical treatment, pollution to the environment is reduced, and the tanning agent capable of releasing the harmful substances is not used in the method, so that the tanning process is environmentally friendly. A terminal product does not contain harmful substances such as free formaldehyde or hexavalent chromium, the health and safety are improved, through biological degreasing and moderate enzyme softening in pretreatment, leather fibers are effectively dispersed, permeation and combination of a tanning agent are promoted, the tanning performance is enhanced, and the damp-heat-resistant stability of a leather plate is improved.

The invention provides a fox fur chrome-free tanning processing technology, and belongs to fine fur leather processing. Firstly, to-be-treated fox fur is sequentially subjected to degreasing treatment and softening treatment, then an F-90 tanning agent is used for pretanning, the fiber structure of the fur can be preliminarily fixed, gaps between fibers are enlarged, a smooth way is provided for subsequent permeation of the compound vegetable tanning agent, combination of tannin in the compound vegetable tanning agent and fur collagen is facilitated, and the tanning effect of the fox fur is improved. The compound vegetable tanning agent can accelerate penetration and dispersion of tannin into fur and avoid surface over tanning, so that the tanning time is shortened, the combining amount is increased, a good chrome-free tanning effect is achieved, the comprehensive effect of combined tanning is remarkably improved by controlling the composition of the compound vegetable tanning agent, the softness, shrinkage temperature and fullness of a product are improved, and the product quality is improved through dyeing and later finishing. The fox fur finished product with excellent comprehensive performance is obtained.

The invention discloses water-saving tanning equipment for cow leather processing, and relates to the technical field of leather processing, the water-saving tanning equipment comprises a U-shaped frame, circular shafts are rotatably connected to two sides of the inner wall of the U-shaped frame, a tanning cylinder is fixed between the two groups of circular shafts, a circulating cleaning assembly is arranged at the top end of the inner wall of the U-shaped frame, and a sealing assembly is arranged at the front end of the tanning cylinder. The cow leather tanning effect can be effectively improved through cyclic utilization of liquid, meanwhile, the consumption of water and a tanning agent can be reduced through cyclic utilization of the tanning liquid, so that the production cost is reduced, the service life of the tanning liquid can be prolonged through cyclic filtration, the resource utilization efficiency is further improved, and when excessive residues are adsorbed on the surface of a filter screen, the tanning effect is effectively improved. And by reversely rotating the servo motor, the scraper blade cleans residues adsorbed on the surface of the filter screen, the residues fall into the empty groove, and the processing efficiency of the cowhide can be further improved by cleaning the filter screen.

The utility model relates to the technical field of broad bean airing racks, in particular to a multi-level ventilation tedding rack of a broad bean airing field, which comprises a plurality of groups of vertical rods on the left and right, guide rails are fixedly arranged between two groups of vertical rods which are adjacent up and down, and side chutes are arranged on the side surfaces of the left and right guide rails which are close to each other. A built-in storage cavity is formed in each guide rail, a first mesh tedding plate is fixedly installed among the four vertical rods located at the top, a second mesh tedding plate is arranged between the left guide rail and the right guide rail, sliding blocks are fixedly installed on the left side face and the right side face of a plate body at the rear end of the second mesh tedding plate, and the sliding blocks are in sliding connection with side sliding grooves. End rods are fixedly installed on the left side face and the right side face of a plate body at the front end of the second mesh tedding plate, side sliding rods are fixedly installed at the ends of the end rods, and the side sliding rods are in sliding connection with the built-in storage cavity. According to the utility model, the position of the mesh tedding plate at the lower part can be adjusted, so that the purpose of fully tedding broad beans at each layer is achieved.

The invention discloses efficient moisture-proof antibacterial leather and a preparation process, the process comprises the steps of soaking, degreasing, tanning, fat liquoring, drying and the like, a sodium cocoyl glycinate aqueous solution, acetone and an enzyme preparation are added in the degreasing process, a tanning agent and an antibacterial agent are added in the tanning process, the tanning agent is tanning extract, and the antibacterial agent is an antibacterial agent. The antibacterial agent is a mixed solution of modified chitosan, glycyrrhizic acid and a nano-silver solution. Compared with the prior art, the process disclosed by the invention adopts a dual degreasing process, the sodium cocoyl glycinate aqueous solution is added, so that the sodium cocoyl glycinate aqueous solution, acetone and an enzyme preparation perform efficient degreasing treatment on the leather, and meanwhile, the growth of bacteria and fungi in the leather can be effectively inhibited under the action of the composite antibacterial agent; the antibacterial function of the leather is improved.