195 results about "Sheep skin" patented technology

The clear production method for Cr-free vehicle seat cushion comprises: hair-saving, combing acid and base for expansion; ammonia-free deliming, dipping weak acid and low slat, Cr-free bating, composite batting, and adding strong-absorption fat for dyeing to treat skin from pig, cattle or sheep. The product has shrinkage temperature up to 110Deg, shows well hand feeling and resistance to thermal and age. This invention reduces material quantity and 30-50% sewage discharge, improves absorption rate, and brings a new way for Cr-free leather.

The invention discloses a method for preparing a vinyl polymer / inorganic nanoparticle composite tanning agent by an in-situ cyclopolymerization method. The vinyl polymer / inorganic nanoparticle composite tanning agent is prepared from dimethyl diallyl ammonium chloride, vinyl monomer and inorganic nanoparticles serving as raw materials by the in-situ cyclopolymerization method. The nanoparticle composite tanning agent has certain tanning effect and can increase absorption ratio of chrome-tanning liquid waste and enhance the dyeing and fat-liquoring effect when combined with 2 percent chrome powder to taw pickled raw sheep skin; the thickness of the finished leather is obviously increased after the tanning; the physical and mechanical performance is superior, and the finished leather is endowed with certain antibacterial and anti-ultraviolet performance; and thus the nano composite tanning agent is environment-friendly. The invention provides a new method for preparing the polymer-based nano tanning agent by the in-situ cyclopolymerization method; and the prepared nano composite tanning agent can reduce the using amount of a conventional chromium tanning agent by 75 percent; and therefore, the method is clean tanning technology which can reduce the chromium pollution from the source and has important practical significance.

The invention relates to the fields of the traditional Chinese medicines and the flavor fragrance cosmetics, and specifically relates to a pure natural plant flower traditional Chinese medicine composition for repelling mosquitoes and relieving itching, a preparation, and floral water and an application method thereof. The traditional Chinese medicine comprises salvia miltiorrhiza, mint, bezoar, saffron crocus, honeysuckle, mint, fresh sheep skin, radix sophorae flavescentis and so on. The traditional Chinese medicine preparation is mainly prepared by extracting the raw materials in a certain ratio. The floral water provided by the invention can be prepared from ethanol, deionized water and the extract of the traditional Chinese medicine composition according to the production process of the floral water. The formula of the traditional Chinese medicine preparation or the floral water is based on sterilizing and relieving itching, and comprises purely natural raw materials without any chemicals such as essence, pigment and preservative. In addition, the traditional Chinese medicine preparation and the floral water comprise two or more than two formulas; and due to the adoption of the application method provided by the invention, the mosquito repelling range is increased comprehensively so that the effects of repelling mosquitoes and relieving itching can be better, while the effects of quickly relieving itching caused by mosquitoes and itching caused by miliaria, and relieving summer heat and refreshing are achieved.

The invention relates to a preparation method of an amphoteric vinyl polymer / ZnO nanocomposite tanning agent. The traditional chrome tanning method causes serious environmental pollution, and Cr<6+> can directly damage skin of human body and induce a variety of diseases. The invention provides the method for preparing the amphoteric vinyl polymer / ZnO nanocomposite tanning agent by two steps of copolymerizing cationic monomer dimethyl diallyl ammonium chloride and vinyl monomers into an amphoteric vinyl polymer, and compositing the amphoteric vinyl polymer with nano-ZnO, thereby preparing the amphoteric vinyl polymer / ZnO nanocomposite tanning agent. The nanocomposite tanning agent is combined with 2% chrome powder for tanning pickled sheep skin, thereby improving the absorbability of chrome tanning waste liquid and enhancing the dyeing and fat-liquoring effect; and the thickness increment ratio of the tanned finished leather can achieve 53%, and the physical and mechanical performances are good. The nanocomposite tanning agent is environment-friendly and can reduce chrome pollution from the source.

The invention relates to a method for making high-grade sheep skin soft upper leather from inferior sheep skin, which comprises: dying, polishing leather, spraying sarcenet oil, mending, smoothing, grounding using grounding agent, brushing and scraping using multi-membrane agent several times, plucking skin, beating soft, scraping skin, Spraying surface slurry, spraying fixation agent, spraying hand feeling agent, ironing etc. Grounding agent is formulated by cation compound resin, non-ionic wax, cation color cream and water. Multi-membrane agent is formulated by non-ionic caseose-free color cream, compound resin, small molecule acroleic acid, swelling resin etc. Surface slurry is formulated by color cream, non-ionic wax, compound resin, silicon casein, flexible acroleic acid, paint slurry etc. fixation agent is formulated by water and aqueous gloss oil. Grounding agent is used mechanically and manually in the invention. Multi-membrane agent ,surface slurry and fixation agent have low cost , little pollution and can make high-grade sheep skin soft upper leather from inferior sheep skin.

The invention discloses an electromagnetic shielding material which is prepared by using natural leather (sheep skin, cattle skin and pig skin) made by the skin of livestock as a base material and has electromagnetic wave absorbing and reflecting performance. The method comprises the steps of first, uniformly spraying a film forming agent on the surface of leather at the density of 2-10 g / m<2> of leather surface area and conducting drying; then, under the conditions of 2-10 MPa and 40-90 DEG C, conducting iron-pressing for 2-30s; next, dispersing nanometer metal powder (silver, copper, silver coated copper, ferroferric oxide, nickel and zinc within a size range of 10nm-900mm) into a non-reaction neutral solvent (ethanol, acetone and deionized water) at the density of 2-20 g / m<2> of leather surface area, dispersing for 30-90 min through ultrasonic waves, uniformly spraying the dispersion liquid on the surface of the iron-pressed leather, and conducting drying; and finally, spraying one layer of film forming agent again at the density of 2-10 g / m<2> of leather surface area, and after drying, obtaining the natural leather having electromagnetic shielding performance.

The invention discloses a preparation method of a cow leather food and a sheep leather food, which comprises the following steps of: scraping the leather; shearing the hairs; plucking the hairs; shaping; cleaning; slitting; pickling and seasoning; removing the bad smell; drying and sterilizing by means of microwave; and bulking by means of microwave. The preparation method uses a modern preparation technology to develop a characteristic flavor food which is safe and healthful, has no bad smell, has low fat and no sugar, and is loose and delicious. The food not only can be taken as convenient snacks, but also can be taken as delicious food on the dining table once being cooled by means of braising, frying, stewing, boiling, cold tossing and the like with various vegetables after being soaked in warm water to be soften, further can be taken as a food for hot pot with various tonics, and has delicious taste, unique flavor, nutrition and tasty, and the functions of nourishing and health care.

The invention relates to an alkali depilation liming method of currying and processing goatskin without generating dust and vulcanization. The method is characterized in that sodium sulfide, sodium bisulfide and lime are not used; lime precipitate and residua do not appear to ensure the drained waste water to be more easily processed; the pollution to the environment in the currying process is greatly reduced. The dust skin washing which is a highest water cost working procedure is eliminated, and the saved water is about 20 percent to 40 percent of the total draining quantity of waster water. The damage to finished leather quality is reduced because of mechanical effect; the loose surface rate caused by mechanical effect is greatly reduced; the production period is also shortened; various materials are saved and the production combined cost is reduced.

The invention discloses a fur printing technology, which is characterized by comprising the following steps of: 1) selecting materials; 2) pretreating raw hide, namely treating the fur by using formaldehyde, and bleaching needle or discoloring; 3) dyeing a bottom color, namely performing brush dyeing or dip dyeing to obtain a color similar to the bottom color of the fur to be imitated; 4) printing, namely smoothening the hair by using a brush, printing a center color, printing the black color on the excircle, uniformly scraping and drying; 5) desizing; and 6) rolling saw dust, namely adding the saw dust, a brightener and the like into a drum for rolling the fur, so that the fur is loosened, brightened and subjected to float color removal. By the technical process that color patterns are formed on the fur through physic-chemical reaction by using dyes or coatings by means of a printing plate, patterns of animals or plants such as leopard cats, leopards, tigers and the like can be imitated on raw rabbit skins, beaver rabbit skins, kidskins, sheared sheep skins and the like, and the skins can be used for manufacturing collars, hats, clothes, edgings and the like.

The invention provides a sexual hybridization method for abelmoschus esculentus. The sexual hybridization method comprises the following steps of: 1. selecting a flower bud on a female parent, which can bloom in the second day in the afternoon of a sunny day; 2. aslant cutting in a place far away from a base part of the flower bud by 0.4-0.6cm for 0.4-0.6cm by using a pencil knife, cutting around the flower bud by 3-4 times, cutting out a corolla to expose a style, scraping a stamen on a stamen tube from bottom to top by using a knife back, wherein anthocaulus is marked, a parchment tube is sleeved on the style, the diameter of the parchment tube is 0.7-0.9cm, the length of the parchment tube is 3.5-4.0cm, and one end of the parchment tube is closed; and 3. extending a small box for collecting pollen into a male parent flower at 7:00-10:00 in the morning of the second day, slightly tapping the base part of the flower by using index fingers to ensure that the pollen falls in the small box without picking the flower, wherein the parchment tube on the style of the female parent is taken off, the pollen is coated on the stigma by using a writing brush, and the parchment tube is sleeved after the pollination is finished. According to the sexual hybridization method, the complete stigma and the stamen tube are remained when the female parent is subjected to castration, and thus the castration success rate and the working efficiency can be improved. The parchment tube is sleeved on the style, and thus the hybridized seed purity and the legume forming rate can be increased. The flower is remained when the pollen is taken, and thus a tender legume can be harvested.

The present invention belongs to the field of leather chemical technology. The composite leather greasing agent is prepared with polyoxyethylene alkyl phosphate, cottonseed oil amide, chlorinated paraffin, octyl phenol polyethenoxy ether, sodium alkylsulfate, olive oil glycolate and No. 30 engine oil. The preparation process includes mixing, heating and other steps. The composite leather greasing agent makes leather soft, tough, plumpy, elastic, waterproof, silky, good in stuffing performance, stable in quality and infrared and ultraviolet resistant, and has low cost. The composite leather greasing agent is suitable for cow skin, sheep skin and pig skin.

A preparation method of a carboxyl-containing epoxy resin tanning agent comprises the steps: adding a sodium hydrogen sulfite aqueous solution into a reactor, then heating to 50-65 DEG C, dropwise adding allyl glycidyl ether, methacrylic acid and an ammonium persulfate aqueous solution with stirring, followed by carrying out a constant temperature reaction for 3-5 h at the temperature of 50-65 DEG C, finally, cooling to the room temperature, regulating the pH value of the obtained reaction system to 2.0-5.5, and thus obtaining the carboxyl-containing epoxy resin tanning agent. The preparation method of the tanning agent is simple and convenient in operation process; the tanning agent has a certain tanning effect and is combined with 3% of a chromium powder to tan sheep skin acid skin, the shrinkage temperature of crust leather after being tanned is allowed to reach about 110 DEG C, and the thickening rate is allowed to reach about 105%; and at the same time, compared with a 8% chromium powder traditional tanning method, the Cr2O3 content in waste liquid after chrome tanning is reduced by about 77.5%.

The invention discloses a method for dyeing Tan sheep skin, which comprises the following steps: softening Tan sheep skin subjected to tanning and airing, and sequentially retanning and dyeing the Tan sheep skin. The dyeing process comprises primary dyeing and secondary dyeing in a rotating drum, wherein the primary dyeing is implemented by dyeing the Tan sheep skin in the rotating drum, in which the dye amount is 1 / 2-3 / 5 of the total amount, at 30-32 DEG C for 30-35 minutes; primary color fixation is carried out after the primary dyeing; after the primary color fixation, the rest of dye is added into the rotating drum to carry out secondary dyeing at 60-65 DEG C; and after the secondary dyeing, secondary color fixation is carried out. The dyeing and color fixation are sequentially carried out twice, thereby avoiding the phenomena of nonuniform dyeing and unclear pores due to thick coating, and ensuring the uniform dyeing of the Tan sheep skin. The treatment time of the whole dyeing technique is short.

The invention belongs to the field of leather tanning technologies, and relates to a less-chrome tanning technology for tanning sheep skin through a nano-composite high absorption chrome tanning assistant. According to the traditional tanning technology, the absorption rate of chrome is not high, so serious waste of chrome resource and pollution are caused and the ecological environment is damaged. According to the tanning theory and the structure characteristics of collagenous fibers and nano-composite high absorption chrome tanning assistant, the nano-composite high absorption chrome tanning assistant and a little of chrome powder are matched and used for tanning goat acid skin, wet blue shrinkage temperature exceeds 100 DEG C, the thickening rate is higher by 50% than that of the leather tanned with conventional 8% of chrome powder, the content of Cr2O3 in the waste liquid is reduced to 50mg / L, and the absorption rate of chrome is improved to be 99%. The mechanical strength of the crust leather is equivalent to normally chrome tanned leather, and SEM (scanning electron microscope) representation results show that the nano-composite high absorption chrome tanning assistant is beneficial to scattering the collagenous fibers, but does not damage the triple helix structure of the collagenous fiber, so that the stability of the collagen structure is guaranteed.

The invention discloses recombinant adenovirus for expression of goat alpha interferon and a construction method and application thereof. The invention first provides an optimized goat alpha interferon gene with a nucleotide sequence shown as SEQ ID NO:1; the invention also provides the recombinant adenovirus for stable expression of the goat alpha interferon, and the microbial preservation number is: CGMCC (China General Microbiological Culture Collection Center) No.8757. The invention further provides a construction method of the recombinant adenovirus. The recombinant adenovirus constructed by the construction method is capable of stable expression of the goat alpha interferon, high in virus titer, and high in antiviral activity; the recombinant adenovirus and the goat alpha interferon expressed by the recombinant adenovirus both have antiviral activity in swine cells IBRS2, bovine cells MDBK and primary sheep skin cells, and can be used in the prevention or treatment of ruminant animal virus infectious diseases.

The invention discloses a reverse roller coating patching machine for sheepskin clothing leather. The reverse roller coating patching machine for the sheepskin clothing leather is characterized by comprising a rack, a skin feeding device used for containing and conveying sheepskin, a roller coating area, a water channel part, a water scraping part and a scraping blade part, wherein the roller coating area comprises a coating decoration roller and a rubber roller used for performing roller coating on the sheepskin; the water channel part and the water scraping part are used for controlling thehumidity of the rubber roller; the scraping blade part is used scraping away a coating decoration agent on the protruding portion of the coating decoration roller surface; the skin feeding device is arranged at the skin feeding end of the rack; the upper portion of the roller coating area is provided with the coating decoration roller, and the lower portion of the roller coating area is provided with the rubber roller; a material trough is arranged between the coating decoration roller and the scraping blade part, and the coating decoration roller is used for dipping the coating decoration agent from the material trough; and the water channel part is arranged below the rubber roller, and the water scraping part is arranged on one side of the rubber roller and is used for controlling the allowance of an aqueous solution remaining on the surface of the rubber roller. An existing roller coating machine structure is improved, and due to a corresponding process measure, soft sheepskin can be flatly fed into the roller coating area; and a special mechanism is adopted, the problems of rolling, folding and the like of the sheepskin during reverse roller coating can be eliminated, and afterroller coating of the sheepskin is completed, the sheepskin can flatly and reliably leave the roller coating operation area.

The invention discloses an ecological tanning method of Tan sheep skin, comprising the following steps: edible salt, formic acid and water are mixed to obtain first mixed solution, the mixed solution stands for 60 minutes and the temperature of the mixed solution is kept at 38 DEG C; fur fatting agent and softening enzyme are added into the first mixed solution and mixed evenly to obtain softened pickling solution, and the softened pickling solution stands for 4 hours and heated to 48 DEG C; a Tan sheep skin is put in the softened pickling solution in a drum, softening enzyme is added into the softened pickling solution again, the drum is rotated continuously for 6 hours and the softened pickling solution is filtered; the filtered softened pickling solution is put again in the drum in which the Tan sheep skin is put, formic acid solution and sulfuric acid solution are added into the filtered softened pickling solution and the drum is rotated until the potential of hydrogen (PH) of the solution is 2-2.5; edible salt, formic acid, white tanning agent and water are mixed to obtain second mixed solution and the drum is rotated continuously for 4 hours; sodium formate, bicarb and soda ash are added into the drum which is filled with the second mixed solution for alkali adjustment; then the ecological tanning of the Tan sheep skin is finished.

The invention relates to a method for preparing leather use environment-friendly thickening type nano composite tanning agent which takes trolamine modified maleic anhydride, methacrylic acid and montmorillonite as raw materials, and adopts a load evocating agent method to prepare the leather use environment-friendly thickening type nano composite tanning agent. Raw sheep skin can be thicken by 112% by using the tanning agent, and crust leather can be thicken by 33% after being tanned by 2% of chromium powder, so that one leather can be changed into multiple leathers, thus remarkably increasing profits and ensuring the absorbing rate of chromium to be higher. Therefore, the nano composite tanning agent can improve the profits of leather, and is environment-friendly and has good performance.

The invention discloses a sheep characteristic polypeptide and application of the sheep characteristic polypeptide in detection of sheep-derived components in skin and glue Chinese medicines. The amino acid sequence of the characteristic polypeptide provided by the invention is GFPGSDGVAGPK (3-position proline hydroxylation). The polypeptide is a specific component of sheep skin collagen. Besides, the invention provides an identification method of sheep skin. The identification method comprises the following steps of treating skin by adopting trypsin; detecting the characteristic peptide by adopting liquid chromatography-tandem mass spectrometry, thereby identifying whether the skin is the sheep skin or not. The invention also provides a method for detecting the sheep-derived components in glue Chinese medicines. The method comprises the following steps of performing enzyme digestion on the glue Chinese medicines by adopting the trypsin, and enabling the characteristic polypeptide to be dissociated from collagen; detecting by adopting the liquid chromatography-tandem mass spectrometry, thereby judging whether the sheep-derived components infiltrate the glue Chinese medicine or not. The method has the advantages of strong characteristic, high sensitivity, simple operation, and the like; whether the sheep-derived components exist in the glue Chinese medicines can be accurately identified.

An apparatus and associated method for comforting a baby by providing a simulation of being held by a caregiver, such as a parent, family member, or guardian. The simulation includes a pair of simulated arms that may be wrapped around the baby or used to provide a surrounding support having the feel of being held in a person's arms. One embodiment includes a sheepskin or faux sheep skin base for warmth and comfort. The arms may include weighted hands for additional feeling of being held. The arms may be affixed to one another in the front (hand, wrist, forearm area) using hook and loop, stretchable band or straps or other fasteners. The arms may also be joined in the back to provide a raised support opposite the hands portion of the apparatus. One embodiment includes a simulated beating heart.

The invention discloses a tanning method of sheep skins and belongs to the field of leather tanning. The tanning method comprises the following steps of: (1) disacidifying and softening naked New Zealand sheep skins till the edges of the naked sheep skins are layered; (2) putting the disacidifed and softened naked skins into a rotary drum, adding water and salt, and rotating for 8-12min, wherein the baume degree is 6-9; (3) adding methanoic acid, adding sulfuric acid after rotating for 10-50min, adding an emulsifying agent after rotating for 60-90min, and rotating for 10-50min; (4) adding a chrome free tanning agent, adding sodium formate after rotating for 100-300min, and adding sodium bicarbonate after rotating for 10-50min; and (5) adding a synthetic tanning agent and rotating for 50-200min. The fibers of the naked New Zealand sheep skins selected in the method are loose and easy to soften; leathers tanned by using the method are more attractive in comparison with shrinkage leathers; and after tanning is finished, the paper size of the leathers is no less than that of the original skins.

The invention disclose the preparation method for dilated food for pets, which is prepared by using one of cow leather or pig skin or sheep leather as raw material through the steps of degreasing, cleaning, drying, forming, dyeing, swelling, flavoring, de-oiling, cooling down and packaging.

The invention discloses a plant biomass-metal in-situ leather combining-tanning method, which is characterized in that plant biomass and metal are prepared into solutions in a molar concentration between 0.05 and 0.20 mol / L in a mol ratio between 1:1 and 2:1 respectively; after the solutions are mixed well in a stirring state, the pH of reaction solution is regulated to between 2.0 and 4.0 by use of an HCl solution with a mass fraction of 3 percent; reflux reaction is performed for 2 to 6 hours at room temperature; generated precipitate is centrifuged, separated and purified; the obtained product is dried at 40 to 60 DEG C in a vacuum degree between 0.02 and 0.06 MPa and then is dried in an oven at 45 to 60 DEG C; and raw pig / cow / sheep skin is tanned by an in-situ combining-tanning method so as to obtain finished leather which is at a shrinkage temperature between 85 and 110 DEG C and is plump and elastic in hand feel. The method can have conventional chromium salt partially replaced to reduce Cr pollution, and creates a novel way for utilizing materials with low tanning property to manufacture leather with high wet-thermal stability.

The invention discloses a technique for dyeing Tan sheep skin, which comprises the steps of softening, retanning, primary dyeing, primary color fixation, modification, secondary dyeing and secondary color fixation. The dyeing and color fixation are sequentially carried out twice, thereby avoiding the phenomena of nonuniform dyeing and unclear pores due to thick coating, and ensuring the uniform dyeing of the Tan sheep skin. The treatment time of the whole dyeing technique is short. The modification is to change the positive charges on the leather surface to enhance the electropositivity, i.e. the leather surface is positively charged, thereby being beneficial to combination with the secondary dye and laying stress on the surface.

The invention belongs to the field of leather tanning process and relates to a process for tanning and softening sheepskin by a multi-carboxylic nano compound chrome tanning additive. In a traditional chrome tanning method, the use of various chemicals in picking and chrome tanning procedures causes damage to the ecological environment. According to leather tanning mechanisms and structural features of collagenous fiber and the multi-carboxylic nano compound chrome tanning additive, the process used for leather tanning and skin softening is characterized in that the shrinkage temperature of blue wet leather can reach 105 DEG C, the grain side is flat and fine, and the requirements of goat skin garment leather can be met; compared with the method that 8 percent of chromium powder is adopted for conventional tanning liquid waste, liquid waste is characterized in that the content of Cr2O3 in the liquid waste is reduced to 172 mg / L from 1,952 mg / L, and the content of chromium in the liquid waste is reduced greatly; compared with the conventional chrome tanned leather, the chrome tanned leather treated through the process has the advantages that excellent effects to follow-up backwater, neutralization, and control to chromium pollution in dying and oiling liquid waste are achieved, the physical and mechanical performance of crust leather is similar, compact hand feeling is achieved, the filling performance and the softness are excellent, and the requirements of the goat skin garment leather can be met.

The invention discloses a sheep skin tearing machine. The sheep skin tearing machine comprises a machine frame, a skin coiling device, a moving device and a drive device, wherein the skin coiling device is fixed on the moving device, the moving device and the drive device are respectively arranged on the machine frame, the drive device is used to drive the moving device to move up and down along the machine frame, the machine frame is an oblique guide rail, and an intersection angle between the oblique guide rail and a vertical plane ranges from 15 degrees to 35 degrees. The sheep skin tearing machine achieves the purpose of tearing sheep skin from a sheep body by using the oblique guide rail as the machine frame and combining rotation of the skin coiling device and reciprocating motions of the moving device, changes the height and horizontal positions of the skin coiling device by adjusting the size of a dip angle of the oblique guide rail so as to adapt to different work heights, meets running speed requirements of sheep slaughtering and processing, can guarantee that sheep carcasses are always in vertical status by enabling the sheep carcasses to move along with a conveying chain during the skin tearing process, and has the advantages of being stable and reliable in skin tearing, convenient to adjust, simple and convenient to operate, low in manufacture and processing cost and the like when used to process the sheep carcasses.

The invention relates to a chrome-free tanning processing process for sheepskins. The process comprises the following processing steps sequentially: water soaking, alkali sprinkled unhairing, liming,deliming softening, degreasing, pickling tanning, retanning dyeing, dressing and finishing, wherein a degreased skin material is subjected to chrome-free tanning by adopting a chrome-free tanning agent TWLZ in the step of pickling tanning so as to obtain white wet pelts, and the sheepskins are obtained through carrying out retanning dyeing on the white wet pelts and carrying out dressing and finishing processing. A chrome-free tanning process is successfully applied to raw sheep skin so as to prepare the white wet pelts and the sheepskins, and a tanning process does not generate chrome containing wastewater and chrome shavings, so that the processing process is environmentally friendly; the prepared white wet pelts have a maximum shrinkage temperature of 95 DEG C and are good in performance; the prepared white wet pelts are relatively good in whiteness and good in storability and do not discolor in one year, and the yellowing resistance is 4 level; and the finished sheepskins are goodin air permeability, and a shrinkage temperature reaches 90 DEG C or above.

The invention relates to the field of fur processing, and particularly relates to production reagents and a production method for shorn sheep skin, wherein the fleece of the produced shorn sheep skin is rich in color. The production reagents comprise stripping solution and wool scalding solution, wherein per 1000 g of the stripping solution is composed of 20-30 g of stripping agent, 80-100 g of formic acid and 870-900 g of water; and per 1000 g of the wool scalding solution is composed of 50-80 g of formic acid, 100-200 g of alcohol and 720-850 g of water. The production method comprises the steps of: tanning raw shorn sheep skin; dyeing fleece of the tanned raw shorn sheep skin; stripping the dyed fleece with the stripping solution; carrying out wool scalding operation on the fleece subjected to stripping treatment with the wool scalding solution to obtain the shorn sheep skin with illusion-color effect.

The invention discloses a cleaner production method of ecological tanning of Tan sheep skin, comprising the steps of preparation prior to tanning, degreasing, soaking in water, fleshing, degreasing, soaking in water, softening and pickling, tanning, neutralizing, wet grinding and oxidizing washing, fat liquoring, neutralizing, outputting skin and standing and clearing up. The softening and pickling comprises the following steps: edible salt, formic acid and water are mixed to obtain first mixed solution; fur fatting agent and softening enzyme are added into the first mixed solution and mixed uniformly to obtain softened pickling solution and the softened pickling solution is heated to 48 DEG C; a Tan sheep skin is put in the softened pickling solution in a drum, softening enzyme is added into the softened pickling solution again, the drum rotates continuously for 6 hours and the softened pickling solution is filtered. The tanning comprises the following steps: the filtered softened pickling solution is put again in the drum in which the Tan sheep skin is put, formic acid solution and sulfuric acid solution are added into the filtered softened pickling solution and the drum is rotated; edible salt, formic acid, white tanning agent and water are mixed to obtain second mixed solution and the drum is rotated continuously; sodium formate, bicarb and soda ash are added for alkali adjustment; then the tanning of the Tan sheep skin is finished.