WO2019007442A2 - Tissu gris en fibres de collagène et procédé basé sur un traitement d'hydroliage pour la préparation de cuir reconstitué - Google Patents

Tissu gris en fibres de collagène et procédé basé sur un traitement d'hydroliage pour la préparation de cuir reconstitué Download PDF

Info

Publication number
WO2019007442A2
WO2019007442A2 PCT/CN2018/103379 CN2018103379W WO2019007442A2 WO 2019007442 A2 WO2019007442 A2 WO 2019007442A2 CN 2018103379 W CN2018103379 W CN 2018103379W WO 2019007442 A2 WO2019007442 A2 WO 2019007442A2
Authority
WO
WIPO (PCT)
Prior art keywords
leather
fiber
grey cloth
fabric
collagen
Prior art date
Application number
PCT/CN2018/103379
Other languages
English (en)
Chinese (zh)
Other versions
WO2019007442A3 (fr
Inventor
徐琦
Original Assignee
徐琦
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 徐琦 filed Critical 徐琦
Publication of WO2019007442A2 publication Critical patent/WO2019007442A2/fr
Publication of WO2019007442A3 publication Critical patent/WO2019007442A3/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
    • D06N3/0018—Collagen fibres or collagen on fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
    • D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
    • D06N3/009—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin by spraying components on the web
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/28—Artificial leather

Definitions

  • the invention relates to a method for preparing leather, in particular to a method for preparing a reduced skin by a collagen fiber grey cloth combined with a hydroentanglement process, and belongs to the technical field of leather processing.
  • leather is an indispensable part of human life and is widely used in clothing, home, automobile, public service and many other fields.
  • the source of leather is only the skin of human-fed and hunted animals, mainly cowhide, sheepskin, pigskin and some special leathers, such as crocodile skin, snake skin and even shark skin. Due to the improvement of human environmental awareness, the hunting of wild animals is prohibited.
  • the leather required by humans is currently derived from artificially reared livestock animals.
  • the growth cycle of livestock has been greatly reduced.
  • human demand for leather has grown too fast, and on the other hand, the leather processing industry is currently using less effective leather.
  • a portion of cowhide that can be used effectively can only account for about 60% of the entire cowhide, and the rest is wasted. Moreover, 60% of this available has serious quality unevenness and can only be cut for different purposes. This will further cause waste.
  • the existing traditional leather processing technology is limited by the innate quality, shape and area of the animal leather, and it is impossible to obtain a high quality leather product which is completely close to the leather feeling, and the polyurethane which is based on the three-dimensional network structure microfiber nonwoven fabric.
  • Synthetic leather such as ultra-fine fiber leather, although it can have a certain moisture absorption, chemical resistance, waterproof, mildew resistance, etc., can fill a small part of high-end leather products, but because of this type of synthetic leather It is synthesized by chemical fiber, and its hygienic properties and affinity with humans still have a large gap with natural fibers.
  • CN103233326A discloses a collagen fiber reclaimed leather which is composed of an upper layer web and an underlying web tightly attached to the lower surface of the upper layer web, wherein the upper layer web is composed of collagen fibers 40-97%, sticky
  • the rubber fiber is composed of 3-60%; the lower layer web is composed of collagen fiber 92-100%, and hot-melt bonding fiber is 0-8%;
  • such recycled leather is mixed with viscose fiber raw material, which can reduce cost, but when viscose fiber
  • the content is high, the feel of the prepared recycled leather still has a certain gap with the dermis, and since it is a composite layer, the problem of the binding force still needs to be solved, and in the subsequent composite processing, such as poor bonding, it will still be Affecting the quality of the
  • CN 103231576B is a method for preparing dermal fiber recycled leather by using thermocompression bonding
  • CN 203174410U, CN201785643U, etc. are disclosed
  • the leather fiber base fabric is the bottom layer, and the recycled leather is bonded with the coating; this kind of fabric is prepared by the method of hot pressing and compounding/bonding of the base fabric and the coating, and the bonding strength between the layers and the strength of the material layer are affected.
  • the quality of the product has to be considered an important factor, and its processing is more complicated.
  • the inventor of the present application has conducted research on the blue wet leather scrap of the leather processing process as a raw material, extracting the collagen fiber therein to realize the recycling of resources, and has achieved certain results, and extracts the blue wet leather scrap.
  • the method of collagen fiber is patented and authorized (Patent No.: ZL201510228478.4, patent name: a collagen fiber for direct spinning and a dermal fiber leather prepared therefrom).
  • the collagen fiber (collagen fiber) obtained by the patented technology can be directly spun by the existing spinning process without graft modification or compounding, and the collagen fiber prepared by the patented technology is spun and woven.
  • the leather fiber leather formed by reprocessing has the advantages of high tensile strength, abrasion resistance, softness, moisture absorption, oil absorption, easy dyeing and good flame retardancy, and is especially suitable for the production of high-end leather products.
  • the fabric obtained by spinning and weaving collagen fiber has a surface structure of warp and weft, and the flatness is not enough to directly form a film by coating. In the actual production process, the processing of such a gray cloth cannot be obtained by using the existing processing technology. And made of high quality leather products.
  • the object of the present invention is to provide a method for preparing reduced skin based on a collagen fiber grey cloth combined with a hydroentanglement process, which is a collagen extracted from a blue wet leather scrap of a leather processing process.
  • the gray fabric obtained by the textile is used as a base fabric, and is treated by a spunlace process to prepare a reduced skin.
  • the object of the present invention is to provide a reduced skin prepared by the above method, which is a novel leather product, which has the advantages of simple structure, high collagen content (more than 80%) and superior mechanical properties.
  • the invention adopts the following technical scheme: a method for preparing a reduced skin based on a collagen fiber grey cloth combined with a hydroentanglement process, comprising the following steps:
  • Spunlace treatment the collagen fiber grey fabric is subjected to a hydroentanglement process, and is sequentially subjected to: pre-wet of the grey fabric, reinforcement by the anti-hydraulic, dehydration, drying, and winding steps;
  • step 2 Finishing agent preparation and finishing film formation: the polyurethane prepolymer liquid prepared in step 1 is added to the active hydrogen-containing polyether and stirred uniformly to obtain a surface finishing agent; then, by spraying, rolling or dip coating process, The surface finish is coated on the surface of the collagen fiber fabric treated by the step (1), and dried to form a film;
  • the collagen fiber grey cloth is prepared by using the collagen fiber for direct spinning described in the patent ZL201510228478.4, and the blue wet leather is used as a raw material for shearing, ultrasonic pretreatment, drum treatment, liquid defibration,
  • the fiber is dried by fiber drying, opening and removing, combing, and fiber surface treatment steps, and then the collagen fiber is spun into a yarn and weaved by a spinning process.
  • the method for pre-wetting the fabric according to the step (1) is a double-wire clamping type or a perforated roller and a wire mesh clamping type.
  • the hydroentangling reinforcement method described in the step (1) may be one of three forms of flat net hydroentanglement reinforcement, drum hydroentanglement reinforcement or hydroentanglement reinforcement combined with a drum and a flat net.
  • a drum spur reinforcement method is preferred.
  • the number of the water stabs is 7 to 12
  • the water pressure is 60 to 250 Bar, depending on the mass per unit area of the grey cloth, the production speed, etc.
  • the pressure head setting is usually Low ⁇ high ⁇ low.
  • the spunlace process further includes a water treatment cycle step of circulating about 95% of the water in the spunlace process after being treated with water.
  • the drying film forming temperature in the step (2) is 90-180 ° C for 1-60 min.
  • the polyether in the step (2) is any one of polytetrahydrofuran diol, polyoxypropylene diol, polyoxypropylene triol, polypropylene glycol, and polyethylene glycol; and the isocyanate is diphenylmethane. Any of isocyanate, isophorone diisocyanate, and toluene diisocyanate.
  • the polyether containing active hydrogen in the step (2) is polytetrahydrofuran diol or polypropylene glycol.
  • the molar ratio of the polyurethane prepolymer to the active hydrogen-containing polyether is 1:8-20, calculated as the NCO content.
  • the process parameters for preparing the reduced skin by the collagen fiber cloth using the roll coating process are as follows: the width of the fabric is 50-150 cm, the wire speed is 1-5 m/min, the coating bath temperature is 30-80 ° C, and the drying temperature is 50- 190 ° C.
  • the invention adopts a grey cloth obtained by woven textile production of collagen fibers extracted from the blue wet leather waste material of the leather processing process, and the gray cloth has the same composition as the dermis, and is composed of 100% collagen fiber.
  • the surface structure of such a grey fabric is a warp and weft structure, and the flatness is not sufficient to directly form a film by painting.
  • the invention is directed to the characteristics of the gray cloth, and the reduced skin is prepared by a spunlace process and a solventless film forming process, and the obtained reduced skin has the sensory effect and the effect of the dermis (two layers of skin), the structure is simple, and the collagen content is high (more than 80). %), the mechanical properties are superior, the method of the invention can greatly improve the utilization efficiency of the leather raw materials, and effectively improve the environmental protection level of the leather industry.
  • the surface of the collagen fiber grey cloth is treated by the hydroentanglement process, which can positively affect the structure and properties thereof, and the water cloth is used to treat the gray cloth, which is called the woven fabric finishing process.
  • a revolutionary measure After the spunlace treatment of the grey fabric, the yarn in the fabric is loosened and the fabric is effectively cleaned; according to the arrangement of the spunlace, the effect of the peach skin can be obtained on both sides or one side of the fabric; The stress generated during the process makes the warp yarns more uniform, thereby improving the feel and appearance of the fabric, increasing the thickness of the fabric, making the fabric gloss more uniform, the fabric pores are reduced, and the distribution is more uniform.
  • the specific mechanism and effect are explained as follows:
  • the fluffy grey fabric can be compacted by the pre-wetting step of the grey cloth to remove the air therein, so that the grey cloth can effectively absorb the energy of the water jet after entering the hydroentangled area to enhance the entanglement effect;
  • the pre-wetted grey cloth enters the hydroentangled zone, and the spray holes of the spunlace water spray plate eject a plurality of fine water jets, which are vertically directed to the grey cloth.
  • the water jet displaces a portion of the surface fibers in the fabric, including vertical movement to the opposite side of the fabric.
  • the water jet penetrates the fabric, it is rebounded by the curtain or the drum and is scattered to the opposite side of the fabric in different orientations.
  • the fibers in the grey fabric are displaced, interspersed, entangled, and entangled, forming numerous flexible entangled points, thereby reinforcing the grey fabric;
  • the spunlace head is arranged along the circumference of the drum, and the fabric is adsorbed on the drum to receive the jet of the water jet ejected by the spunlace head.
  • the grey cloth is adsorbed on the rotating drum, and there is no deviation phenomenon, which is conducive to high-speed production.
  • the grey cloth is curved in the hydroentangled area, and the spunlace surface is relaxed and the reverse surface is compressed, which is favorable for water jet penetration and effective entanglement. fiber.
  • the rotating drum is a metal cylinder perforated structure, and a dewatering device is arranged therein, which has a good rebound effect on the water flow compared with the flat net hydroentangled supporting net curtain;
  • the purpose of dehydration is to remove the retained water in the grey cloth in time so as not to affect the entanglement effect of the next spunlace.
  • the water jet energy is dispersed, which is not conducive to fiber entanglement.
  • the moisture in the grey fabric is minimized, which is beneficial to reduce the drying energy consumption.
  • the water consumption of the spunlace non-woven production process is very large. When the output reaches 5 tons/day, the water needs to be about 50-160 m3 per hour. In order to save water and reduce production costs, about 95% of the water must be recycled after being treated with water.
  • the water-repellent processed fabric is further subjected to a solventless film-forming process to prepare a resin layer on the surface of the fabric, which can increase the elasticity and hand of the final reduced skin, and obtain a high-quality leather product.
  • the composition of the collagen fiber grey cloth is exactly the same as that of the dermis, and is composed of 100% collagen fiber.
  • the reduced skin obtained by the method of the invention has a good leather feel, good surface coating effect, and good film forming performance.
  • the surface finish improves the surface of the grey fabric.
  • the finishing agent used in the finishing process can enter the interior of the grey fabric, which makes the fabric structure after the finishing process more stable and the surface flatness is improved, making it closer to the leather cortex, even Equivalent to the effect and quality of the dermis, it has a good performance in terms of softness, abrasion resistance, heat resistance, moisture absorption and air permeability;
  • the film forming process is a solvent-free process, and the production process is green and environmentally friendly.
  • Embodiment 1 implements the present invention by the following steps:
  • Preparation of collagen fiber grey cloth adopting the preparation method of collagen fiber for direct spinning described in patent ZL201510228478.4, using blue wet leather as raw material after shearing, ultrasonic pretreatment, drum processing, liquid defibration, The fiber is dried by fiber drying, opening and removing, combing, and fiber surface treatment steps, and then the collagen fiber is spun into a yarn by a spinning process to obtain a collagen fiber grey cloth; the specific steps are as follows:
  • Shearing using blue wet leather as raw material, cutting it into the size required by the production or equipment with a leather shearing machine;
  • Ultrasonic pretreatment preparing a pretreatment liquid rich in hydroxyl-containing polar solvent, the pretreatment liquid is used in an amount of 6-25 times the weight of the blue wet leather, the pH is adjusted to 7 to 7.5, and the temperature is raised to 40 to 50 ° C. The cut blue wet leather is immersed therein for 12 to 24 hours, then the pretreatment liquid is heated to 50 to 60 ° C, the pH is adjusted to 7.5 to 8, and then immersed for 1 to 2 hours, and the ultrasonic low frequency is short at the current temperature.
  • the ultrasonic conditions used are: frequency 20 ⁇ 50kHz, power 200 ⁇ 600W, ultrasonic time 10 ⁇ 20 minutes; wherein the pretreatment liquid of the hydroxyl-rich polar solvent is from 2 to 10% by mass concentration
  • the alkaline solution is prepared by mixing an alcohol solution having a mass concentration of 45 to 75% by volume ratio 1: (1 to 5);
  • Drum treatment After the ultrasonic treatment is finished, the pretreatment liquid is filtered off, and the pretreated blue wet leather is subjected to a drum treatment process.
  • the drum is rotated in an aqueous environment, and the rotation speed of the drum is 8-15 rpm/ Minutes, the time is 5 minutes, then stop the drum, drain the liquid, then add water to the drum, and gradually add softener amino silicone oil emulsion or ternary copolymerized silicone oil emulsion in the aqueous environment, slowly rotate the drum to mix fully Then, the drum is further rotated to soften the process, the drum rotation speed is 6-10 rpm, the temperature is 25 ° C, and the time is 3-4 hours;
  • liquid defibration, fiber drying the blue wet leather which has been subjected to the drum treatment and is initially softened and transferred back to the liquid defibrating machine, and the collagen fibers are discharged in the form of textile fibers by the centrifugal force generated by the hydraulic stirring;
  • the collagen fiber separated from the liquid defibrating machine is dried in a drying chamber by a dryer, and the drying method adopts a combination of suction and air intake, and the humid air in the drying chamber is extracted and dried by the exhaust air, and then the air is introduced through the air.
  • the method is to transport it in a drying chamber, and then to perform drying until the moisture content of the fiber is 25 to 35%, and the drying temperature is 70 to 80 ° C;
  • Opening and removing impurities and combing the dried fiber is opened by the opening process, and the opening method is to open and remove the opening roller with a diameter of ⁇ 380 mm and a rotation speed of 600 rpm.
  • the impurities other than the fibers are obtained, and the bundled collagen fibers are obtained; and the bundled collagen fibers are combed into the single-fiber collagen fibers by a carding machine.
  • the specific parameters on the card are 27 ° C and the humidity is 70% - 75%.
  • the outlet speed is 3.5m/min;
  • the collagen fiber obtained in the step (5) is subjected to a surface treatment by a pulsed electric field under a nitrogen protection condition, and the treatment conditions are: a pulse frequency of 20 to 30 Hz, an electric field intensity of 20 kV/cm, and a treatment time of 1 to ⁇ . 10s;
  • step 1 the grey fabric prepared in step 1 is subjected to pre-wet, anti-hydroentanglement reinforcement, dehydration, drying, and winding steps;
  • the prepared polyurethane prepolymer liquid is added to the polytetrahydrofuran diol and stirred uniformly to obtain a surface finishing agent, and the NCO content is calculated, the polyurethane prepolymer and the polytetrahydrofuran diol.
  • the molar ratio is 1:14;
  • the surface finish is then coated on the surface of the spunlaced collagen fiber fabric by a conventional spraying process; the film forming temperature is controlled at 120-150 ° C for 10-30 min;
  • a film having a specific decorative style is adhered to the surface of the fabric by a conventional film transfer process.
  • Embodiment 2 implements the present invention by the following steps:
  • Ultrasonic pretreatment prepare pretreatment liquid, adjust pH to 7, heat up to 50 °C, completely immerse the blue wet leather in the pretreatment liquid for 12 hours, then warm the pretreatment liquid to 55 °C, adjust the pH to 7.5. Soak for another 1.5 hours, and perform ultrasonic low-frequency short-time oscillation at the current temperature.
  • the ultrasonic conditions used are: frequency 40 kHz, power 600 W, ultrasonic time 10 minutes;
  • pretreatment liquid is made up of 10% sodium hydroxide solution with mass concentration a mixture of isopropanol and propylene glycol having a mass concentration of 45% (volume ratio of isopropanol to propylene glycol of 2:3) is prepared by mixing in a volume ratio of 1:5;
  • Drum treatment the ultrasonic pretreatment is finished, the pretreatment liquid is filtered off, and the pretreated blue wet leather is subjected to a drum treatment process, first rotating the drum in an aqueous environment, and the drum rotation speed is 8 rpm. , the time is 5 minutes, then stop the drum, discharge the liquid, then add water to the drum, and gradually add the softener amino silicone oil emulsion in the aqueous environment, slowly rotate the drum to mix well, then turn the drum Perform softening treatment, the drum rotation speed is 8 rpm, the temperature is 25 ° C, and the time is 4 hours;
  • Liquid defibration, fiber drying liquid defibration, fiber drying: the blue wet leather which has been subjected to drum treatment and preliminary softening and softening is transferred to a liquid defibrating machine, and the collagen is generated by centrifugal force generated by hydraulic stirring.
  • the fiber is separated in the form of textile fibers; then the collagen fibers separated from the liquid defibrating machine are dried in a drying chamber by a dryer, and the drying method adopts a combination of suction and air intake, and the air is used to blow the chamber. After the humid air is extracted and dried, it is transported into the drying chamber by the air inlet method, and then the drying is performed until the moisture content of the fiber is 35%, and the drying temperature is 70 ° C;
  • the dried fiber is opened by the opening process, and the opening method is to open the opening under the parameters of the opening roller diameter of ⁇ 380 mm and the rotation speed of 600 rpm, and remove impurities other than the fiber to obtain
  • the bundled collagen fibers are further combed into a single-fiber collagen fiber by a carding machine, and the specific parameters on the carding machine are: a temperature of 27 ° C, a humidity of 70%, and a netting speed of 3.5 m / min;
  • Fiber surface treatment The collagen fiber obtained in the step (5) is subjected to a surface treatment by a pulsed electric field under a nitrogen protection condition, and the treatment conditions are: a pulse frequency of 30 Hz, an electric field intensity of 20 kV/cm, and a treatment time of 3 s to obtain collagen. fiber;
  • step 1 the grey fabric prepared in step 1 is subjected to pre-wet, anti-hydroentanglement reinforcement, dehydration, drying, and winding steps;
  • a film with a specific decorative style is adhered to the surface of the fabric by a conventional film transfer process.
  • Embodiment 3 implements the present invention by the following steps:
  • Shearing using blue wet leather as raw material, cutting it into the size required by the production or equipment with a leather shearing machine;
  • Drum treatment the ultrasonic pretreatment is finished, the pretreatment liquid is filtered off, and the pretreated blue wet leather is subjected to a drum treatment process, first rotating the drum in an aqueous environment, and the drum rotation speed is 10 rpm. , the time is 5 minutes, then stop the drum, discharge the liquid, then add water to the drum, and gradually add the softener ternary copolymerized silicone oil emulsion in the aqueous environment, slowly rotate the drum to mix well, then rotate The drum is softened, the drum speed is 10 rpm, the temperature is 25 ° C, and the time is 3.5 hours;
  • Opening and removing impurities and combing the dried fiber is opened by the opening process, and the opening method is to open and remove the opening roller with a diameter of ⁇ 380 mm and a rotation speed of 600 rpm.
  • the impurities other than the fibers are obtained, and the bundled collagen fibers are obtained; and the bundled collagen fibers are combed into the single-fiber collagen fibers by a carding machine, and the specific parameters on the card are 27 ° C, 75% humidity, and the net The speed is 3.5m/min;
  • Fiber surface treatment The collagen fiber obtained in the step (5) is subjected to a surface treatment by a pulsed electric field under a nitrogen protection condition, and the treatment conditions are: a pulse frequency of 20 Hz, an electric field intensity of 20 kV/cm, and a treatment time of 5 s to obtain collagen. fiber;
  • step 1 the grey fabric prepared in step 1 is subjected to pre-wet, anti-hydroentanglement reinforcement, dehydration, drying, and winding steps;
  • the polyurethane prepolymer liquid prepared in the step 2 is added to the polytetrahydrofuran diol (PTMG) and stirred uniformly to obtain a surface finishing agent, and the polyurethane prepolymer is calculated based on the NCO content.
  • the molar ratio to the polytetrahydrofuran diol is 1:20;
  • the surface finish is then coated on the surface of the spunlaced collagen fiber fabric by a conventional dip coating process; the film forming temperature is controlled at 110-180 ° C for 20-60 min;
  • a film having a specific decorative style is adhered to the surface of the fabric by a conventional film transfer process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

L'invention concerne un tissu gris en fibres de collagène et un procédé basé sur un traitement d'hydroliage pour la préparation d'un cuir reconstitué. Un traitement d'hydroliage et un traitement de formation de film sans solvant sont réalisés sur un tissu gris en fibres de collagène. Le cuir reconstitué est préparé au moyen du procédé d'hydroliage et du traitement de formation de film sans solvant par rapport aux caractéristiques du tissu gris en fibres de collagène, et le cuir reconstitué obtenu présente la sensation au toucher et l'effet du cuir véritable (cuir à deux couches). La structure est simple, la teneur en collagène est élevée (plus de 80 %), et la performance mécanique est excellente. Le tissu gris subit le traitement d'hydroliage, puis subit le traitement de formation de film sans solvant pour préparer une couche de résine sur la surface du tissu gris, ce qui améliore l'élasticité et la sensation au toucher du cuir reconstitué de sorte que des produits en cuir de haute qualité soient obtenus. Le procédé augmente de manière significative l'efficacité d'utilisation de matière première de cuir, et améliore efficacement le niveau de protection environnementale de l'industrie du cuir.
PCT/CN2018/103379 2017-07-03 2018-08-31 Tissu gris en fibres de collagène et procédé basé sur un traitement d'hydroliage pour la préparation de cuir reconstitué WO2019007442A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710530624.8 2017-07-03
CN201710530624.8A CN107385948B (zh) 2017-07-03 2017-07-03 基于胶原蛋白纤维坯布结合水刺工艺制备还原皮的方法

Publications (2)

Publication Number Publication Date
WO2019007442A2 true WO2019007442A2 (fr) 2019-01-10
WO2019007442A3 WO2019007442A3 (fr) 2019-02-07

Family

ID=60334174

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/103379 WO2019007442A2 (fr) 2017-07-03 2018-08-31 Tissu gris en fibres de collagène et procédé basé sur un traitement d'hydroliage pour la préparation de cuir reconstitué

Country Status (2)

Country Link
CN (1) CN107385948B (fr)
WO (1) WO2019007442A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11001679B2 (en) 2016-02-15 2021-05-11 Modern Meadow, Inc. Biofabricated material containing collagen fibrils
US11214844B2 (en) 2017-11-13 2022-01-04 Modern Meadow, Inc. Biofabricated leather articles having zonal properties
US11352497B2 (en) 2019-01-17 2022-06-07 Modern Meadow, Inc. Layered collagen materials and methods of making the same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110284337B (zh) * 2019-04-04 2022-02-15 江阴骏华纺织科技有限公司 一种牛纤皮基布的制备工艺
CN110205829B (zh) * 2019-04-04 2021-11-23 江阴骏华纺织科技有限公司 一种水性牛纤皮基布的后处理工艺
CN110258129B (zh) * 2019-04-04 2021-12-24 江阴骏华纺织科技有限公司 一种特柔牛纤皮制备工艺
CN110258128B (zh) * 2019-04-04 2021-12-24 江阴骏华纺织科技有限公司 一种全水性牛纤皮的制备工艺

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0233367A (ja) * 1988-07-21 1990-02-02 Daiyu Shoji:Kk 天然皮革のコラーゲン繊維層を有する織物或いはニット
JPH06306765A (ja) * 1993-04-20 1994-11-01 Kanegafuchi Chem Ind Co Ltd 耐水性の良好なコラーゲン繊維
DE102011010371A1 (de) * 2011-02-04 2012-08-09 Ecco Gleittechnik Gmbh Verbundwerkstoff auf Basis eines naturfaserverstärkten Kunststoffes
CN103233326A (zh) * 2013-04-08 2013-08-07 江阴骏华纺织科技有限公司 一种胶原纤维再生皮革及其制造方法
CN103409942B (zh) * 2013-07-25 2015-10-07 浙江梅盛实业股份有限公司 人工皮革基布的制造方法
CN103451855B (zh) * 2013-09-09 2015-08-19 韶关市曲江兴昶无纺科技有限公司 天然胶原蛋白纤维革基布及其制备方法
CN203834277U (zh) * 2013-12-30 2014-09-17 福建华阳超纤有限公司 一种汽车内饰用胶原蛋白海岛纤维皮革
CN103757963B (zh) * 2014-01-07 2015-09-16 昆明理工大学 一种二氧化氯气相漂白制麻皮纤维的方法
CN103866582B (zh) * 2014-03-27 2015-08-19 张子亮 含有天然物的可降解水性合成革及其制作工艺
CN104894695B (zh) * 2015-05-07 2016-05-25 徐琦 可直接纺纱用胶原纤维的制备方法及真皮纤维革
CN105970657B (zh) * 2016-06-30 2018-01-05 山东大学 一种用于汽车内饰表皮的水刺再生革的制备方法
CN106087076B (zh) * 2016-08-29 2018-06-19 福建永盛皮革制品有限公司 用蓝湿皮边角料制作皮革胶原纤维的方法及制得的皮革胶原纤维
CN106544878A (zh) * 2016-10-27 2017-03-29 泉州众信超纤科技股份有限公司 天然动物胶原蛋白复合超纤材料及制品的制备工艺
CN106319985A (zh) * 2016-10-27 2017-01-11 泉州众信超纤科技股份有限公司 真空吸制备真皮感超纤材料及制品的制备工艺

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11001679B2 (en) 2016-02-15 2021-05-11 Modern Meadow, Inc. Biofabricated material containing collagen fibrils
US11525042B2 (en) 2016-02-15 2022-12-13 Modern Meadow, Inc. Composite biofabricated material
US11542374B2 (en) 2016-02-15 2023-01-03 Modern Meadow, Inc. Composite biofabricated material
US11214844B2 (en) 2017-11-13 2022-01-04 Modern Meadow, Inc. Biofabricated leather articles having zonal properties
US11352497B2 (en) 2019-01-17 2022-06-07 Modern Meadow, Inc. Layered collagen materials and methods of making the same

Also Published As

Publication number Publication date
WO2019007442A3 (fr) 2019-02-07
CN107385948A (zh) 2017-11-24
CN107385948B (zh) 2018-09-28

Similar Documents

Publication Publication Date Title
WO2019007442A2 (fr) Tissu gris en fibres de collagène et procédé basé sur un traitement d'hydroliage pour la préparation de cuir reconstitué
CN107956134B (zh) 水性聚氨酯超细纤维合成革及其制备方法
CN102619095B (zh) 一种束状海岛环保阻燃汽车麂皮革的制造方法
CN102182015B (zh) 一种胶原纤维水刺射流复合生产人工皮革底基材料的方法
CN100494546C (zh) 一种皮革纤维基布的制备方法
CN104963100B (zh) 一种轻薄透可以拉丝的复合面膜基布
CN107326536B (zh) 异型涤纶纤维与木浆纤维复合水刺湿巾布及其制备方法
CN104894695B (zh) 可直接纺纱用胶原纤维的制备方法及真皮纤维革
CN204112011U (zh) 胶原纤维基布生产线
CN108532123B (zh) 一种含天然干花瓣的水刺无纺材料及其制备方法
CN104963101A (zh) 一种轻薄透高性能复合非织造布及其制备方法
CN106393945A (zh) 一种热风无纺布与全棉无纺布的复合方法及其生产系统
CN105105924A (zh) 一种体表高抗菌、透气、清凉的健康功能干爽护垫
CN103042776A (zh) 一种仿真皮超纤面料
CN114086313B (zh) 一种植物纤维性革基布及其制作方法
CN103409942A (zh) 人工皮革基布的制造方法
CN109722791A (zh) 一种环保超细纤维非织造面膜布及其制造方法
CN103757936A (zh) 一种胶原蛋白及海岛纤维皮的制造方法
CN109267235A (zh) 一种无纺布的加工工艺
CN110592968B (zh) 一种天然纤维仿真皮革及其制造方法
CN102359024B (zh) 聚氨酯超细纤维合成革及其制备方法
CN107227628A (zh) 基于胶原蛋白纤维坯布结合植绒工艺制备还原皮的方法
CN108823997A (zh) 一种无溶剂仿头层皮超纤革的加工方法
CN110820165B (zh) 一种胶原短纤维再生皮及其制备工艺
CN105544090A (zh) 一种具有凹凸花纹的花式无纺布及其制备方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18828809

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18828809

Country of ref document: EP

Kind code of ref document: A2