42 results about "Tanning tanning" patented technology

The invention discloses an environment-friendly raw skin preservative and a preparation method thereof. The preservative comprises the following component raw materials in percentage by weight: 42-61% of sodium chloride, 16-27% of polyvinyl alcohol, 16-27% of polyethylene glycol, 0.5-5% of polypropylene glycol, 0.5-5% of polytetrahydrofuran ether glycol and 0.5-2% of polyacrylamide, and the sum of weight percentages is 100%, wherein the molecular weight of polyvinyl alcohol is 25000-35000, the molecular weight of polyethylene glycol is 1000-10000, the molecular weight of polypropylene glycol is 400-2000, and the molecular weight of polytetrahydrofuran ether glycol is 600-2000. The preservative provided by the invention has small usage amount, is safe and nontoxic and can be biologically degraded, the total dissolved solids (TDS) and chloride pollution in tanning waste water can be greatly lowered, and no negative effect is produced on following tanning process.

An apparatus for delivering liquid includes a wand with a nozzle, a toggle switch, and a supply canister for delivering self-tanning and sun-tanning solutions to a human body. The wand may pivotably attach to a cap attached to the supply canister containing the chosen liquid to be delivered without the necessity of an exposed external tube suspended between the wand and the supply canister.

Washable leather having durable oil repellency, durable soil removal and durable water repellency, and a method of making the same, comprising exposing the leather to a composition comprising at least one fluorinated amino group during a tanning process are disclosed Ethyl formate; at least one fluorinated ester; mixtures thereof; or a mixture of at least one fluorinated ethyl citrate carbamate with at least one fluorinated ethyl carbamate, at least one fluorinated ester, or a fluorinated amino Mixture of ethyl formate and fluorinated esters.

The invention discloses a leather production process and relates to the field of leather. The key points of the technology are: including the sequential immersion, degreasing, softening, tanning, processing and further processing of the raw hide; the tanning agent used in the tanning process includes the following components in parts by weight: 30~40 parts of SPDP; 20~30 parts of auxiliary enzyme preparation 30-40 parts of tanning aids; 10-20 parts of penetration aids; auxiliary enzyme preparations are selected from any one of protease and lipase; tanning aids are selected from any one of amino acids and casein; The agent is any one of fatty alcohol polyoxyethylene ether or alkali-resistant penetration agent OEP-70; SPDP, auxiliary enzyme preparation, tanning auxiliary agent and penetration auxiliary agent are mixed to obtain leather tanning agent, which has the effect of reducing water quality and environmental impact , Avoid the advantages of tannin extract dyeing, hard leather embryo, and long-term storage of mechanical properties.

The composition comprises of a component A selected from a hydroxylated derivative of benzoic acid or of cinamic acid, their esters, amides or salts, a glycoside of a hexose, and their mixtures; and a component B selected from quinic acid, shikimic acid, their alkaline metal or alkaline earth salts, their methyl esters, and mixtures of the same. This composition is suitable for protecting the skin against ultraviolet radiation coming from the sun or artificial sources, such as those used in phototherapy units and in sun tanning rooms. For application in the field of dermatology and nutrition, and, in particular, in the photoprotection of the skin and mucosa, photo-ageing and photocarcinogenesis, including protection of the immune system associated with the skin.

The invention relates to a baby sunbathing device, which comprises a baby bed body, a storage base and a screw rod. The storage base is provided with a storage cavity inside, and the four corners of the lower end of the storage base are all equipped with universal wheels. To open and close the opening and closing door of the storage chamber, the screw rod is vertically arranged and located in the middle of the side of the storage base on the opposite side of the door. The lower end of the screw rod is fixed on the storage base through a bearing seat. A seat cushion is installed on the upper side of the storage base, and a handle is installed on the upper end of the screw rod. , the upper part of the screw rod is equipped with a nut seat matched with its thread, a sleeve is arranged in the middle of one side of the crib body, the sleeve is set on the nut seat, a supporting flange is arranged on the outer periphery of the lower end of the nut seat, and the lower side of the sleeve is against the upper side of the supporting flange , the device is simple in structure, reasonable in design, easy to operate and use, and the storage base can be used for nurses to sit and rest, and can also store items. The crib is provided with shaped pillows to correct the shape of the baby's head.

The invention provides an ultrasonic wave and microwave assisted pass-type metal salt tanning method. The method comprises the following four steps: (1) regulating the pH value of pickled pelt firstly to be at least 3.5, extruding by adopting a roller type extruding machine, and regulating the distance between the extrusion rollers to be 40%-60% of the initial thickness of the pickled pelt; (2) enabling the grain side of the pickled pelt after extrusion to face downwards to pass through a metal salt tanning solution containing sodium chloride, tanning under the action of 40 KHz ultrasonic waves for at least 1 min, extruding the crust leather by adopting the roller type extruding machine, and further regulating the distance between the extrusion rollers to be 40%-60% of the initial thickness of the pelt; (3) repeating the operations in the step (2) for 1-3 times, and no longer extruding by adopting the roller type extruding machine after the last time tanning; and (4) performing heat preservation on the crust leather after the completion of operations in the step (3) in a microwave field for at least 2 min at the heat preservation temperature of 30-60 DEG C. The ultrasonic wave and microwave assisted pass-type metal salt tanning method is applicable to tanning adopting various metal salts, the tanning time is short, and the physical and chemical property of the obtained leather have no obvious difference compared with that obtained by adopting the conventional method; besides, the tanning solution in the method is recyclable, and waste water containing a tanning agent is not discharged during the tanning process.

The invention belongs to a salt-free, pickling-free, low-chromium combined tanning method for top-layer cowhide upper leather. In the conventional chrome tanning process, the content of chromium trioxide in the waste liquid after tanning with 7% chrome powder is 2000-3000mg / L, which will cause harm to the environment and human health. At the same time, the shortage of chromium resources will also lead to tanning costs. increase. In the present invention, the amphoteric polymer-based nano-composite chrome-less tanning auxiliaries and 3%-5% chrome powder are applied to the tanning process of the top-layer cowhide shoe upper leather. The content of chromium oxide is 0.21g / L, which is 80.5% lower than that tanned with 7% conventional chrome powder; the tensile strength of crust leather is 38.5% higher than that of 7% conventional chrome powder tanned, and the tear strength is increased by 50.1%. The invention can effectively reduce the content of chromium trioxide in waste water, reduce the dosage of chrome tanning agent, avoid the use of salt and acid in the tanning process, and reduce the pollution of chrome tanning waste liquid.