US20230183918A1 - Method of producing a bio based textile material and materials and products made thereby - Google Patents

Method of producing a bio based textile material and materials and products made thereby Download PDF

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Publication number
US20230183918A1
US20230183918A1 US18/078,739 US202218078739A US2023183918A1 US 20230183918 A1 US20230183918 A1 US 20230183918A1 US 202218078739 A US202218078739 A US 202218078739A US 2023183918 A1 US2023183918 A1 US 2023183918A1
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United States
Prior art keywords
coating
backing material
reinforcement backing
slurry
roller
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Pending
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US18/078,739
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Thomas Schneider
Reiner Hengstmann
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Isa Tantech Ltd
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Isa Tantech Ltd
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Priority to US18/078,739 priority Critical patent/US20230183918A1/en
Publication of US20230183918A1 publication Critical patent/US20230183918A1/en
Pending legal-status Critical Current

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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056Artificial 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
    • D06N3/0061Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12Artificial 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
    • D06N3/14Artificial 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
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0006Artificial 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 woven fabrics
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0011Artificial 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
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/007Artificial 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
    • D06N3/0072Slicing; Manufacturing two webs at one time
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/007Artificial 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
    • D06N3/0077Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086Artificial 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
    • D06N3/0088Artificial 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
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12Artificial 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
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/18Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
    • D06N3/183Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials the layers are one next to the other
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N2201/00Chemical constitution of the fibres, threads or yarns
    • D06N2201/04Vegetal fibres
    • D06N2201/042Cellulose fibres, e.g. cotton
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N2203/00Macromolecular materials of the coating layers
    • D06N2203/02Natural macromolecular compounds or derivatives thereof
    • D06N2203/022Natural rubber
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N2205/00Condition, form or state of the materials
    • D06N2205/02Dispersion
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N2211/00Specially adapted uses
    • D06N2211/10Clothing
    • D06N2211/106Footwear

Definitions

  • the present invention relates to a system and method of producing different bio-based textile composite materials and products. These bio-based textile composite materials may be used for products in various industries, such as footwear and accessories.
  • the present invention relates to a method of producing different bio-based mushroom textile materials using bio-based and biodegradable/compostable man-made-cellulosic fiber and vulcanized, non-chemically modified natural rubber.
  • the man-made-cellulosic fiber is preferably as close to one hundred percent bio-based and biodegradable as possible, and may, for example, be manufactured from materials obtained from certified sustainable managed forests. These certified sustainable forests may be, for example, those certified by the Forest Stewardship Counsel or other agencies that certify and manage sustainable forests.
  • the mushroom containing material and natural rubber material are applied as one or more coatings to a backing comprised of the man-made-cellulosic fiber and natural rubber, with the coatings and backing material being further treated during and after the application of the one or more coatings to produce a bio-based textile composition.
  • Synthetic polymeric materials instead of genuine leather within the footwear and accessories industry is increasing due to activities from consumer organizations globally rallying against the use of genuine leather.
  • Synthetic polymeric materials are commonly retrieved from crude oil through extensive production processes, with the production of these crude oil-based synthetic poly triers creating a negative impact on the environment and contributing to climate change.
  • These types of synthetic polymers are almost non-biodegradable, contaminate the global oceans and remain in the environment for thousands of years, and, in many cases, are not recyclable.
  • the present invention is directed to a system and method for creating different bio-based, natural composite textile materials. These materials may be used, for example, as alternatives to textiles made from genuine leather and synthetic polymers for consumer goods such as footwear and accessories.
  • the replacement of synthetic polymeric materials with materials created using naturally derived polymers and other bio-based materials helps to move towards increasing sustainability in the consumer goods industry.
  • the present invention uses nature-provided materials that are obtainable without causing harm to the environment, and which, when separated, purified, and processed into composite materials present cost-efficient replacements to synthetic polymeric materials,
  • the nature-provided materials used may include, for example, natural rubber and mushroom materials.
  • the natural materials, such as natural rubber mushrooms may be, for example combined with man-made-cellulosic fibers preferably sourced from a sustainable forest, to prepare a bio-based and sustainable but coated textile material and materials,
  • the natural composite materials may include, for example, natural rubber, mushroom materials, and regenerated cellulose fibers such as man-made cellulosic fibers, such as cotton and jute
  • the reinforcement backing material may be, for example, made from non-woven regenerated cellulose fibers or a woven material produced from natural and sustainable fibers.
  • This reinforcement backing may be a woven or non-woven man-made cellulosic fiber made of, for example, viscose, lyocell, modal and/or any other cellulose based non-woven fabric.
  • the cellulose-based man-made cellulosic fibers are preferably sourced from certified sustainable managed forests.
  • Such forests may be those certified by the Forest Stewardship Council or similar agencies that use their expertise to promote responsible management of the world's forests by bringing together experts from the environmental, economic and social areas. These certified sustainable managed forests are carbon neutral with every tree that is cut being replaced with additionally planted trees. The use of such certified materials in consumer goods allows the customer to trace where the material comes from based on assigned tracking information. This tracking information is included with shipments of any materials harvested from the forest.
  • the method and system use the man-made cellulosic fibers to produce a textured reinforcement backing material.
  • the man-made cellulosic fiber blend may be made from viscose and lyocell and is considered bio-based and bio-degradable.
  • the man-made cellulosic fiber blend forming the reinforcement backing material may be made such that it does not contain any additional synthetic fibers to add additional material strength.
  • the reinforcement backing material may have an area density to provide sufficient strength and permeability for use in consumer textile products.
  • the reinforcement backing material may have varying densities which may apply for different final applications, one example being an area density of around 500 g/m 2 . Other densities may apply for different product applications and required performances.
  • This reinforcement backing material may be created through a needle punching process and/or hydroentanglement process to create a non-woven backing material.
  • Needle-punched non-woven fabrics can be made from various fibrous webs, fiber entanglement and frictions after fine needle barbs are repeatedly penetrated through fibrous web.
  • the needle punched fabrics have a fibrous network with the non-woven fabrics providing specific functions including for example, resilience, stretch and softness.
  • the non-woven fabric can also be made by hydroentanglement, where fibers are subjected to high pressure water streams, joining them together.
  • the reinforcement backing material serves as an enforcement/backing material in the production of manufactured products.
  • the bio-based, natural composite materials are applied to the reinforcement backing material in one or more coating layers, resulting in a bio-based and substantially biodegradable textile material that provides high performance in consumer industries, such as the footwear industry.
  • coatings are applied to the man-made cellulosic fiber blend non-woven backing.
  • Natural, substantially biodegradable materials that can be used to create these coatings include mushrooms and natural rubber, color pigments or dyes, and finishing additives.
  • mushrooms such as common Oyster mushrooms can be used as ingredients in a base-coating directly applied to the non-woven backing.
  • the mushrooms that may be used in creating the coatings can be those that are considered waste mushrooms for not meeting strict requirements necessary to enter the food industry. These mushrooms are normally treated as animal food or are otherwise not harvested or are discarded.
  • the natural rubber used to produce the coating material for one or more of the coating layers may be retrieved from local sources.
  • This natural rubber can be, for example, latex with a portion including solids, which are only stabilized with low amounts of ammonia and further treated with common vulcanization agents.
  • the natural rubber is bio-based and can substantially biodegrade over time.
  • a natural polymerization process is used to ensure that the latex is not vulcanized.
  • the latex natural rubber may be obtained from certified sustainable forests, such as from Vietnam Forest Stewardship Council certified plantations and certified sustainable forests.
  • the system and method may be used to make high performance products, with some products including additional chemicals to enhance certain properties thereof.
  • chemicals such as polyurethane and butadiene may be added to the natural, biodegradable mushrooms and rubbers used in the one or more coatings is applied to the non-woven backing material.
  • the coatings may be applied as separate layers, with the non-woven backing and any applied coating layers being allowed to dry and set before any subsequent layers are applied.
  • the system and method may further include pressing or flattening the non-woven backing material and any applied coating layers before, during, or after such layers being dried and set.
  • Color pigments or dyes may be added as ingredients to one or more of the coating layers in order to produce a desired color or patterns in the final product.
  • a softener agent may also be used in the one or more coatings or may be added to the final textile product after all coatings have been applied. This softening agent may be substantially biodegradable over time and may be made from biodegradable crude oil.
  • the system and method can create materials for use in the leather industry and minimizes carbon footprint, water, and chemical consumption.
  • FIG. 1 illustrates the general principle of a roller coater system.
  • FIG. 2 illustrates an exemplary roller coater
  • FIG. 3 illustrates applying a slurry using a doctor blade application.
  • FIG. 4 illustrates a Foulard application system used to apply the coatings.
  • FIG. 5 illustrates an embossing machine which is used to press or flatten the surface of the reinforcement backing material with the base coat.
  • FIG. 6 illustrates base coated reinforcement backing material with bio-based slurry after the first treatment step.
  • FIG. 7 provides a flow diagram of the process of creating a bio-based natural fabric
  • FIG. 8 shows an example of the construction of the coated material with the reinforcement material.
  • FIG. 9 illustrates a system for making adjustments to the thickness of the materials.
  • the system and method described herein implements a process directed to creating different bio-based, natural rubber and mushroom containing materials applied onto a reinforcement fabric backing material.
  • the resulting product may be used to produce footwear and other consumer goods.
  • the reinforcement backing may be a non-woven man-made cellulosic fiber made of viscose, lyocell, modal and/or any other cellulose based non-woven fabric, or it may be a woven material produced from natural and sustainable fibers.
  • the coating layers may include, for example, a base-coating layer, an intermediate coating layer, and a final topcoat layer.
  • the base-coating layer may be formed from a mixed slurry containing one or more of mushrooms, mushroom material, and natural rubber ingredients. Certain of the layers, such as the intermediate layer, may contain only natural rubber and color pigments or dyes. Other layers, such as the finishing layer, may include bio-based ingredients to provide desired performance and appearance characteristics to the final product.
  • the layers, and in particular the base-coating layer may be pressed and flattened before a subsequent coating layer is applied. After all coating layers have been applied and set, the thickness and amount of the resulting material comprised of the reinforcement backing mated al and all applied coating layers may be adjusted. For example, the resulting material may be trimmed or cut to a desired shape, size, and thickness.
  • a base-coating may be prepared and a base reinforcement backing material provided.
  • the base-coating may then be applied to the reinforcement backing material one or both sides,
  • the base-coat slurry may be created through combination of ingredients which are added into a mixing bowl in desired rations and in a desired order.
  • the mushrooms used in the system and method described herein are, for example, farmed mushrooms which are not used for human consumption. These mushrooms do not meet food industry requirements such as size, freshness and color and are generally repurposed as animal food or disposed,
  • the mushrooms are used as filling material in the final product and are grinded to a fine mushroom powder with a particle size of 0.2 mm prior to preparation of the final slurry. All ingredients are mixed together, including the mushroom material, natural latex, water, additional required water based performance chemicals, natural plasticizer and pigments or dyes, which are mixed together at the same time.
  • the latex is only stabilized with ammonia from the later supplier. No additions of stabilizing and/or vulcanizing agents are required to stabilize the natural rubber in the slurry, and thus no stabilizing or vulcanizing agents need to be added to the slurry.
  • a mixer such as an air pressured mixer, is used to mix the slurry until a homogenous solution is reached.
  • Other mixers and devices can be used to mix the slurry including, for example a hydraulic mixer, mechanical mixer, agitator, or stirrer.
  • This base-coat slurry is then applied to the reinforcement backing material.
  • the base-coat slurry may be applied using, for example, a roller coater machine, doctor blade, Foulard system, brushes, or other application devices that spread the coating on the backing material.
  • the base-coat slurry may be continuously mixed as it is applied using these systems.
  • the base-coat slurry may be continuously mixed as it is added to the roller coater machine.
  • mixing devices, stirrers, or agitators may be included in the container with the slurry so as to continuously mix it to keep it as a substantially homogenous solution.
  • One or more base-coatings may be applied to the reinforcement backing material to achieve the desired thickness of properties of the reinforcement backing material with the applied bio-based slurry. This coated material may also be pressed or flattened after application of one or more base coatings.
  • the pressing or flattening of the base-coated reinforcement backing material is done to level and even the surface while preparing for the next treatment and application of additional coating layers.
  • the resultant base-coated reinforcement backing material may be prepared for application of one or more additional, intermediate coating layers.
  • the intermediate coating layers may be applied using the same techniques as described above with respect to the base-coatings and may add a thin layer of material.
  • the sheets of material comprised of the reinforcement backing and any applied base and intermediate coating layers are prepared for application of final topcoats and additives.
  • the formulation of the topcoat solution will vary based on the performance expectations of the final material, such as color requirements and surface structure requirements achieved by embossing.
  • the sheet material may be allowed to dry or set.
  • the final sheet material may be trimmed or cut to adjust the thickness, size, and shape. For example, the thickness may be adjusted based on different requirements of the products which will be made using the sheet material.
  • a splitting machine may be used to take a sheet with an original thickness and split it based on various performance requirements for the final products.
  • FIG. 1 illustrates an exemplary roller coater system that may be used to apply one or more of the coating layers as described above.
  • the roller coater system may include a container 101 for holding the coating slurry 102 .
  • a nozzle or valve 103 may be included on the slurry container, allowing a controlled amount of slurry to flow from the container.
  • the nozzle or valve may be connected to a controllable pump allowing a user to adjust the amount of slurry coating dispensed.
  • An application coating roller 104 is provided, which is controllable to rotate at various speeds and to contact a reinforcement backing substrate sheet 107 with an adjustable amount of pressure.
  • the valve or nozzle 103 dispenses the slurry coating 102 from the container 101 onto the coating application roller 104 and creates a pocket of slurry coating called a nip 105 .
  • the nip 105 is picked up by the coating application roller 104 .
  • One or more scraper blades 106 may be included to remove excess coating from the back of the roller 104 and return it to the nip 105 .
  • the thickness of the coating the coating application roller 104 applies to the reinforcement backing material sheet 107 depends on the amount of coating released from the nozzle 103 , and can further be adjusted based on the distance between the scraper blade 106 and the roller and/or the amount of pressure applied to the roller by the scraper blade.
  • a conveyer 108 driven by one or more conveyer drive rollers 109 or other drive mechanisms moves the reinforcement backing material sheet 107 under the coating application roller 104 .
  • the application coating roller 104 which picks up the nip 105 , transfers the nip as a coating layer onto the backing material sheet 107 and compresses it into the sheet as it passes under the coating roller 104 .
  • the conveyer 108 may move the sheet 107 to an exit or holding area after the coating layer has been applied.
  • the reinforcement backing material sheet 107 to be coated may itself be directly transported by conveyer rollers 109 so that it passes underneath the coating roller 104 .
  • a mixer 110 may be included in the slurry container.
  • the sheet 107 may be transitioned into a drying mechanism 111 , such as a tunnel oven.
  • the sheet is left in the drying mechanism until the water content of the sheet has been reduced to an acceptable amount for further processing.
  • the sheet may be left in a tunnel oven at a temperature set within a range of 85° C. to 140° C. to remove water and start the polymerization process of the latex in the slurry coating. Other drying times and temperatures may be used to remove or reduce the remaining water.
  • the treated sheets may be hung to ensure the sheets are sufficiently dry for the next processing steps.
  • FIG. 2 illustrates another view of a roller coater system that may be used to apply the one or more coating layers.
  • the system may include a control panel with touch screen 201 , a squeegee blade with linear insertion device 202 configured to dispense and apply the coating, and a working area 203 with a conveyer system.
  • the system may further include one or more drive motors 204 configured to operate rollers to move materials placed on the working area 203 .
  • the system may be mounted on rails 205 , such that the position of the working area relative to the coating application system and squeegee can be adjusted.
  • FIG. 3 illustrates an exemplary doctor blade application system which can be used to apply the one or more coatings and coating slurries as described above.
  • a container 301 may be provided that contains the slurry coating 302 .
  • a valve or nozzle 303 may be included on the container 301 , allowing a controlled amount of the slurry coating 302 to be dispensed.
  • a mixer 304 may be included in the container 301 , in order to maintain a homogeneous consistency of the slurry coating.
  • the slurry coating 302 may be dispensed into a coating area onto a conveyer system 305 , and a doctor blade 306 may be positioned above the conveyer system 305 .
  • a reinforcement backing material sheet 307 may be provided on the conveyer system, which transports the reinforcement backing material sheet 307 in a direction such that it passes under the dispensing valve or nozzle 303 and also under the doctor blade 304 .
  • the doctor blade 304 removes excess dispensed coating from the sheet 307 , allowing a desired amount of the coating to be transferred to the sheet 307 and compressed into the sheet.
  • the sheet 307 may pass into a heating and drying device 308 , such as a tunnel oven. After the coating and drying process, the material may be hung for at least 8 hours to dry the sheet and reduce the moisture content before further processing steps.
  • the sheet 307 may be kept stationary, with the doctor blade 304 moved over the sheet to remove excess coating material.
  • FIG. 4 illustrates a Foulard application system that may also be used to apply the coatings.
  • This application system is commonly used for coatings through the use of dip and squeeze technology.
  • the backing material 401 is attached on a roll 402 that is mounted on an A-frame 403 .
  • the backing material 401 is then pulled by a plurality of motor-driven rollers 404 , such that it is transported into a container 405 containing a slurry mixture.
  • the backing material is then transported out of the container 405 and introduced to a mangle roller system 406 , where a specific pressure can be applied onto the fabric backing material now coated with the slurry from the container, and the remaining slurry is squeezed out of the fabric.
  • the coated backing material may then be introduced into a drying device 407 , such as a tunnel dryer.
  • a drying device 407 such as a tunnel dryer.
  • the systems described in FIGS. 1 - 4 may he used to apply one or more of the coatings onto the reinforcement backing material sheet, including base or intermediate coatings, When a base coating is applied, the sheet of material may then be dried and compressed or flattened pressed so that the surface of the sheet is leveled and even for further applications of additional coatings.
  • FIG. 5 illustrates an example of an embossing machine which may be used to flatten the surface of the reinforcement backing material with the base coat applied. Using this machine, the layers, and in particular the base-coating layer applied to the reinforcement backing material, may be pressed and flattened so they are level and even before a subsequent coating layer is applied.
  • the embossing machine may include two plates 501 , 502 that can be used to apply a controlled amount of pressure on the backing material sheets. The machine may further include inputs to allow a user to adjust the pressure 503 , temperature 504 , and time 505 of the embossing machine.
  • a temperature and a pressure value are selected, and the sheet material is inserted into the machine and between the plates.
  • the temperature and pressure are then applied for a selected time period with the desired side of the sheet facing up to flatten the base coated reinforcement material and prepare for the intermediate coating step.
  • a sheet of reinforcing material with the coated side facing up may be placed between the embossing plates 501 and 502 . of FIG. 5 , and a pressure (kg/cm 2 ) 503 may be applied at a temperature of 80° C. to 110° C. 504 while the upper embossing plate is moving down on the material for a fixed time.
  • FIG. 6 illustrates an example of such a reinforcement backing material with a base coat applied after it has been compressed and flattened. As shown in the figure, the coated sheet of material has a smooth, evenly coated, and non-sticky surface.
  • FIG. 7 illustrates a flow diagram of the procedural steps for creating a bio-based, substantially biodegradable textile product according to the systems and methods described herein.
  • the process begins in step 710 with the application of a base coating onto a reinforcement backing material sheet.
  • the base coating is applied as a slurry coating, using, for example, one or more of the systems as described with respect to FIGS. 1 - 4 .
  • the base coating may be applied to one or more sides of the backing material.
  • the base coated backing material is dried using a drying mechanism, such as a tunnel oven or air dryer.
  • a reaction/drying time of at least fifteen minutes may be set with a tunnel dryer system that includes an oven capable of applying a temperature between 85° C. to 120° C. Other drying temperatures and drying may be used to reduce the water content to an acceptable amount.
  • a tunnel dryer system that includes an oven capable of applying a temperature between 85° C. to 120° C.
  • Other drying temperatures and drying may be used to reduce the water content to an acceptable amount.
  • the coating process described above to apply a. base coat is applied to one side of the fabric sheet, which is then dried. Then, this same process may then be repeated on the other side of the fabric sheet.
  • a sheet or other protective cover may be applied to any conveyer system or on the first coated side such that the first coated side is protected as the second side is coated.
  • step 720 the surface of the sheet material with the base coats applied is flattened by using a pressing machine or embossing machine.
  • This intermediate flattening process allows for the surface material to be leveled and evened while preparing for the next treatment step at 730 .
  • the base coated materials may be pressed, such as with an embossing machine applying a temperature and pressure with the desired side facing up.
  • step 730 one or more intermediate coatings are then applied. This intermediate coat may be applied as a thin layer on top of the one or more base coatings.
  • the formulation of this intermediate coat may be different from the base coat, which can include mushroom and natural rubber materials mixed together in a slurry.
  • the intermediate coating may only include the natural rubber material, such as latex, and any color pigments or dyes added thereto to achieve a desired color of the final product. No mushroom materials are included in the intermediate coating layers.
  • the color pigments or dyes are for the final color adjustment while the natural rubber, such as latex, adds to the formed natural rubber of the textile sheet and adds additional performance to the material.
  • the application of the intermediate coats may be performed in the same manner as the process for applying the base coats as discussed above.
  • the thickness of the intermediate coat layer may be, for example, around 12 grams/ft 2 .
  • the coated sheets are dried using the drying mechanism, such as a drying tunnel system.
  • the drying may be performed at 100° C. to 120° C. for a duration of at least 15 minutes.
  • the speed of a conveyer transporting the sheet of material through the drying tunnel may be adjusted such that the sheet is dried in the tunnel oven for at least 15 minutes.
  • the coated panels may also be hung to ensure they are sufficiently dry for further processing steps.
  • the intermediate coated sheets are then prepared for further processing in step 740 .
  • Step 740 of FIG. 7 is directed to the application of the final coat, also known as the topcoat.
  • the formulation of the topcoat is based on the desired performance needs of the final materials.
  • the main ingredients and supporting agents of the topcoat include water-based polyurethane (bio-based) and other performance giving water-based substances.
  • the application of the final top-coat is applied either by using an industry spray application line with a drying tunnel directly attached thereto, or a roller printing application system and drying system. Test results of the performance of the materials suggest that good results can be achieved with an application of the topcoat with amounts of up to, for example, around 10 grams per square feet.
  • the coated sheet may then be trimmed and cut at step 750 to the desired thickness, size, and shape.
  • FIG. 8 shows an example of the construction of a fully coated reinforcement backing.
  • a layer of reinforcement backing material 801 such as non-woven material or woven material, which is coated and penetrated with a first base coat- 802 and an intermediate coat- 803 .
  • the base coat 802 may be applied on one or both sides, and the intermediate coat layer may be applied on top of the base coat. When both sides are base coated, the intermediate layer can be selectively applied to one or both of the base coated sides.
  • a top coat layer 804 is applied on top of the intermediate layer. When both sides contain an intermediate layer, the top coat may be applied to one or both of the intermediate layered sides.
  • the top coat 804 can be applied through a roller coater system or a spray carousel.
  • a splitting machine or other cutting device may be used to trim and cut away excess material to make a textile material of desired thickness.
  • the final sheet of material may be split into final thicknesses ranging from 0.5 mm to 1.8 mm.
  • FIG. 9 illustrates an example of a splitting machine for splitting used to adjust the thickness of the material.
  • the splitting machine includes a blade 901 , such as a band knife.
  • Two or more rollers 902 may be used to transport sheet of material 903 such that the blade 901 removes a desired amount to adjust the thickness.
  • the height of the blade relative to the sheet of material may be adjusted to adjust the amount trimmed.
  • the back side of the material that includes only the reinforcement backing material and some base coating is cut so that layers 801 - 804 of FIG. 8 are maintained upon splitting of the material.
  • Other cutting devices such as knives, shears, blades, or scissors may be used to further adjust the size and shape of the trimmed material.

Abstract

The present invention is directed to a system and method for creating different bio-based, natural composite textile materials. In the system and method described herein, a non-woven fabric is used as a backing material upon which the bio-based, natural composite materials are applied in one or more coating layers, resulting in a bio-based and substantially biodegradable textile material that provides high performance in consumer industries, such as the footwear industry.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • This application claims priority to and the benefit of co-pending U.S. Provisional Patent Application No. 63/288,337, titled “METHOD OF PRODUCING A BIO BASED TEXTILE MATERIAL AND MATERIALS ANI) PRODUCTS MADE THEREBY,” filed Dec. 10, 2021, the full disclosures of which are hereby incorporated by reference in their entities for all purposes.
  • FIELD OF THE INVENTION
  • The present invention relates to a system and method of producing different bio-based textile composite materials and products. These bio-based textile composite materials may be used for products in various industries, such as footwear and accessories. In particular, the present invention relates to a method of producing different bio-based mushroom textile materials using bio-based and biodegradable/compostable man-made-cellulosic fiber and vulcanized, non-chemically modified natural rubber. The man-made-cellulosic fiber is preferably as close to one hundred percent bio-based and biodegradable as possible, and may, for example, be manufactured from materials obtained from certified sustainable managed forests. These certified sustainable forests may be, for example, those certified by the Forest Stewardship Counsel or other agencies that certify and manage sustainable forests. The mushroom containing material and natural rubber material are applied as one or more coatings to a backing comprised of the man-made-cellulosic fiber and natural rubber, with the coatings and backing material being further treated during and after the application of the one or more coatings to produce a bio-based textile composition.
  • BACKGROUND OF THE INVENTION
  • The use of synthetic polymeric materials instead of genuine leather within the footwear and accessories industry is increasing due to activities from consumer organizations globally rallying against the use of genuine leather. Synthetic polymeric materials are commonly retrieved from crude oil through extensive production processes, with the production of these crude oil-based synthetic poly triers creating a negative impact on the environment and contributing to climate change. These types of synthetic polymers are almost non-biodegradable, contaminate the global oceans and remain in the environment for thousands of years, and, in many cases, are not recyclable.
  • What is needed is a process to create alternatives to genuine leather materials that does not rely on synthetic polymers that harm the environment and negatively contribute to climate change.
  • SUMMARY OF THE INVENTION
  • The present invention is directed to a system and method for creating different bio-based, natural composite textile materials. These materials may be used, for example, as alternatives to textiles made from genuine leather and synthetic polymers for consumer goods such as footwear and accessories. The replacement of synthetic polymeric materials with materials created using naturally derived polymers and other bio-based materials helps to move towards increasing sustainability in the consumer goods industry. In particular, the present invention uses nature-provided materials that are obtainable without causing harm to the environment, and which, when separated, purified, and processed into composite materials present cost-efficient replacements to synthetic polymeric materials, The nature-provided materials used may include, for example, natural rubber and mushroom materials. The natural materials, such as natural rubber mushrooms, may be, for example combined with man-made-cellulosic fibers preferably sourced from a sustainable forest, to prepare a bio-based and sustainable but coated textile material and materials,
  • To create the bio-based composite textile materials, natural composite materials are applied onto a reinforcement backing material. The natural composite materials may include, for example, natural rubber, mushroom materials, and regenerated cellulose fibers such as man-made cellulosic fibers, such as cotton and jute, The reinforcement backing material may be, for example, made from non-woven regenerated cellulose fibers or a woven material produced from natural and sustainable fibers. This reinforcement backing may be a woven or non-woven man-made cellulosic fiber made of, for example, viscose, lyocell, modal and/or any other cellulose based non-woven fabric. The cellulose-based man-made cellulosic fibers are preferably sourced from certified sustainable managed forests. Such forests may be those certified by the Forest Stewardship Council or similar agencies that use their expertise to promote responsible management of the world's forests by bringing together experts from the environmental, economic and social areas. These certified sustainable managed forests are carbon neutral with every tree that is cut being replaced with additionally planted trees. The use of such certified materials in consumer goods allows the customer to trace where the material comes from based on assigned tracking information. This tracking information is included with shipments of any materials harvested from the forest.
  • The method and system use the man-made cellulosic fibers to produce a textured reinforcement backing material. As noted above, the man-made cellulosic fiber blend may be made from viscose and lyocell and is considered bio-based and bio-degradable. In addition, the man-made cellulosic fiber blend forming the reinforcement backing material may be made such that it does not contain any additional synthetic fibers to add additional material strength. The reinforcement backing material may have an area density to provide sufficient strength and permeability for use in consumer textile products. The reinforcement backing material may have varying densities which may apply for different final applications, one example being an area density of around 500 g/m2. Other densities may apply for different product applications and required performances. This reinforcement backing material may be created through a needle punching process and/or hydroentanglement process to create a non-woven backing material. Needle-punched non-woven fabrics can be made from various fibrous webs, fiber entanglement and frictions after fine needle barbs are repeatedly penetrated through fibrous web. The needle punched fabrics have a fibrous network with the non-woven fabrics providing specific functions including for example, resilience, stretch and softness. The non-woven fabric can also be made by hydroentanglement, where fibers are subjected to high pressure water streams, joining them together. The reinforcement backing material serves as an enforcement/backing material in the production of manufactured products. In the system and method described herein, the bio-based, natural composite materials are applied to the reinforcement backing material in one or more coating layers, resulting in a bio-based and substantially biodegradable textile material that provides high performance in consumer industries, such as the footwear industry.
  • In order to create a finished natural and substantially biodegradable textile material, coatings are applied to the man-made cellulosic fiber blend non-woven backing. Natural, substantially biodegradable materials that can be used to create these coatings include mushrooms and natural rubber, color pigments or dyes, and finishing additives. For example, mushrooms such as common Oyster mushrooms can be used as ingredients in a base-coating directly applied to the non-woven backing. The mushrooms that may be used in creating the coatings can be those that are considered waste mushrooms for not meeting strict requirements necessary to enter the food industry. These mushrooms are normally treated as animal food or are otherwise not harvested or are discarded.
  • In addition, the natural rubber used to produce the coating material for one or more of the coating layers may be retrieved from local sources. This natural rubber can be, for example, latex with a portion including solids, which are only stabilized with low amounts of ammonia and further treated with common vulcanization agents. The natural rubber is bio-based and can substantially biodegrade over time. A natural polymerization process is used to ensure that the latex is not vulcanized. The latex natural rubber may be obtained from certified sustainable forests, such as from Vietnam Forest Stewardship Council certified plantations and certified sustainable forests.
  • The system and method may be used to make high performance products, with some products including additional chemicals to enhance certain properties thereof. For example, to create a high performance textile product, chemicals such as polyurethane and butadiene may be added to the natural, biodegradable mushrooms and rubbers used in the one or more coatings is applied to the non-woven backing material. The coatings may be applied as separate layers, with the non-woven backing and any applied coating layers being allowed to dry and set before any subsequent layers are applied. The system and method may further include pressing or flattening the non-woven backing material and any applied coating layers before, during, or after such layers being dried and set. Color pigments or dyes may be added as ingredients to one or more of the coating layers in order to produce a desired color or patterns in the final product. Further, a softener agent may also be used in the one or more coatings or may be added to the final textile product after all coatings have been applied. This softening agent may be substantially biodegradable over time and may be made from biodegradable crude oil.
  • As described herein, the system and method can create materials for use in the leather industry and minimizes carbon footprint, water, and chemical consumption.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 illustrates the general principle of a roller coater system.
  • FIG. 2 illustrates an exemplary roller coater.
  • FIG. 3 illustrates applying a slurry using a doctor blade application.
  • FIG. 4 illustrates a Foulard application system used to apply the coatings.
  • FIG. 5 illustrates an embossing machine which is used to press or flatten the surface of the reinforcement backing material with the base coat.
  • FIG. 6 illustrates base coated reinforcement backing material with bio-based slurry after the first treatment step.
  • FIG. 7 provides a flow diagram of the process of creating a bio-based natural fabric,
  • FIG. 8 shows an example of the construction of the coated material with the reinforcement material.
  • FIG. 9 illustrates a system for making adjustments to the thickness of the materials.
  • DETAILED DESCRIPTION OF THE INVENTION
  • The system and method described herein implements a process directed to creating different bio-based, natural rubber and mushroom containing materials applied onto a reinforcement fabric backing material. The resulting product may be used to produce footwear and other consumer goods. As described herein, the reinforcement backing may be a non-woven man-made cellulosic fiber made of viscose, lyocell, modal and/or any other cellulose based non-woven fabric, or it may be a woven material produced from natural and sustainable fibers.
  • One or more coatings are created and applied to the reinforcement backing material. These coatings may be applied in different steps as separate layers, with each coating layer allowed to dry or set before application of the next coating layer. The coating layers may include, for example, a base-coating layer, an intermediate coating layer, and a final topcoat layer. The base-coating layer may be formed from a mixed slurry containing one or more of mushrooms, mushroom material, and natural rubber ingredients. Certain of the layers, such as the intermediate layer, may contain only natural rubber and color pigments or dyes. Other layers, such as the finishing layer, may include bio-based ingredients to provide desired performance and appearance characteristics to the final product. The layers, and in particular the base-coating layer, may be pressed and flattened before a subsequent coating layer is applied. After all coating layers have been applied and set, the thickness and amount of the resulting material comprised of the reinforcement backing mated al and all applied coating layers may be adjusted. For example, the resulting material may be trimmed or cut to a desired shape, size, and thickness.
  • As a first step in the process, a base-coating may be prepared and a base reinforcement backing material provided. The base-coating may then be applied to the reinforcement backing material one or both sides, The base coat may be created by combining ingredients including latex, water, pigments or dyes, and mushrooms or mushroom materials to create a slurry. If high performance characteristics, such as high tear strength, tensile strength, vamp flex cycles of >/=500,000 and Bally Flex cycles >/=50,000 are desired, then performance enhancing chemicals may also be added and mixed when making the base-coat slurry. Alternatively, or in addition, performance enhancing chemicals may also be added to the slurries used in the intermediate and finishing coatings described herein, or to the final textile product. The base-coat slurry may be created through combination of ingredients which are added into a mixing bowl in desired rations and in a desired order. The mushrooms used in the system and method described herein, are, for example, farmed mushrooms which are not used for human consumption. These mushrooms do not meet food industry requirements such as size, freshness and color and are generally repurposed as animal food or disposed, The mushrooms are used as filling material in the final product and are grinded to a fine mushroom powder with a particle size of 0.2 mm prior to preparation of the final slurry. All ingredients are mixed together, including the mushroom material, natural latex, water, additional required water based performance chemicals, natural plasticizer and pigments or dyes, which are mixed together at the same time. The latex is only stabilized with ammonia from the later supplier. No additions of stabilizing and/or vulcanizing agents are required to stabilize the natural rubber in the slurry, and thus no stabilizing or vulcanizing agents need to be added to the slurry. A mixer, such as an air pressured mixer, is used to mix the slurry until a homogenous solution is reached. Other mixers and devices can be used to mix the slurry including, for example a hydraulic mixer, mechanical mixer, agitator, or stirrer. This base-coat slurry is then applied to the reinforcement backing material. The base-coat slurry may be applied using, for example, a roller coater machine, doctor blade, Foulard system, brushes, or other application devices that spread the coating on the backing material. The base-coat slurry may be continuously mixed as it is applied using these systems. For example, when using a roller coater, the base-coat slurry may be continuously mixed as it is added to the roller coater machine. When using a Foulard system where the slurry is in a container and the non-woven or woven backing material is dipped in the container and transported through the container using rollers which squeeze the backing material, mixing devices, stirrers, or agitators may be included in the container with the slurry so as to continuously mix it to keep it as a substantially homogenous solution. One or more base-coatings may be applied to the reinforcement backing material to achieve the desired thickness of properties of the reinforcement backing material with the applied bio-based slurry. This coated material may also be pressed or flattened after application of one or more base coatings.
  • The pressing or flattening of the base-coated reinforcement backing material is done to level and even the surface while preparing for the next treatment and application of additional coating layers. For example, following application of the one or more base-coating layers and any pressing or flattening, the resultant base-coated reinforcement backing material may be prepared for application of one or more additional, intermediate coating layers. The intermediate coating layers may be applied using the same techniques as described above with respect to the base-coatings and may add a thin layer of material. After the one or more intermediate coating layers have been applied and dried or set, the sheets of material comprised of the reinforcement backing and any applied base and intermediate coating layers are prepared for application of final topcoats and additives. The formulation of the topcoat solution will vary based on the performance expectations of the final material, such as color requirements and surface structure requirements achieved by embossing. After the topcoat is applied to the sheet material comprising the reinforcement backing and coating layers applied thereto, the sheet material may be allowed to dry or set. Once complete, the final sheet material may be trimmed or cut to adjust the thickness, size, and shape. For example, the thickness may be adjusted based on different requirements of the products which will be made using the sheet material. To perform the thickness adjustment, a splitting machine may be used to take a sheet with an original thickness and split it based on various performance requirements for the final products.
  • FIG. 1 illustrates an exemplary roller coater system that may be used to apply one or more of the coating layers as described above. As shown in FIG. 1 , the roller coater system may include a container 101 for holding the coating slurry 102. A nozzle or valve 103 may be included on the slurry container, allowing a controlled amount of slurry to flow from the container. The nozzle or valve may be connected to a controllable pump allowing a user to adjust the amount of slurry coating dispensed. An application coating roller 104 is provided, which is controllable to rotate at various speeds and to contact a reinforcement backing substrate sheet 107 with an adjustable amount of pressure. The valve or nozzle 103 dispenses the slurry coating 102 from the container 101 onto the coating application roller 104 and creates a pocket of slurry coating called a nip 105. The nip 105 is picked up by the coating application roller 104. One or more scraper blades 106 may be included to remove excess coating from the back of the roller 104 and return it to the nip 105. The thickness of the coating the coating application roller 104 applies to the reinforcement backing material sheet 107 depends on the amount of coating released from the nozzle 103, and can further be adjusted based on the distance between the scraper blade 106 and the roller and/or the amount of pressure applied to the roller by the scraper blade. A conveyer 108 driven by one or more conveyer drive rollers 109 or other drive mechanisms moves the reinforcement backing material sheet 107 under the coating application roller 104. The application coating roller 104, which picks up the nip 105, transfers the nip as a coating layer onto the backing material sheet 107 and compresses it into the sheet as it passes under the coating roller 104. The conveyer 108 may move the sheet 107 to an exit or holding area after the coating layer has been applied. Alternatively, the reinforcement backing material sheet 107 to be coated may itself be directly transported by conveyer rollers 109 so that it passes underneath the coating roller 104. In order to keep the slurry coating 102 in the container 101 substantially homogenous, a mixer 110 may be included in the slurry container. Once the sheet 107 is coated, it may be transitioned into a drying mechanism 111, such as a tunnel oven. The sheet is left in the drying mechanism until the water content of the sheet has been reduced to an acceptable amount for further processing. For example, the sheet may be left in a tunnel oven at a temperature set within a range of 85° C. to 140° C. to remove water and start the polymerization process of the latex in the slurry coating. Other drying times and temperatures may be used to remove or reduce the remaining water. After the drying process, the treated sheets may be hung to ensure the sheets are sufficiently dry for the next processing steps.
  • FIG. 2 illustrates another view of a roller coater system that may be used to apply the one or more coating layers. As shown in FIG. 2 , the system may include a control panel with touch screen 201, a squeegee blade with linear insertion device 202 configured to dispense and apply the coating, and a working area 203 with a conveyer system. The system may further include one or more drive motors 204 configured to operate rollers to move materials placed on the working area 203. The system may be mounted on rails 205, such that the position of the working area relative to the coating application system and squeegee can be adjusted.
  • FIG. 3 illustrates an exemplary doctor blade application system which can be used to apply the one or more coatings and coating slurries as described above. As shown in FIG. 3 , a container 301 may be provided that contains the slurry coating 302. A valve or nozzle 303 may be included on the container 301, allowing a controlled amount of the slurry coating 302 to be dispensed. A mixer 304 may be included in the container 301, in order to maintain a homogeneous consistency of the slurry coating. The slurry coating 302 may be dispensed into a coating area onto a conveyer system 305, and a doctor blade 306 may be positioned above the conveyer system 305. A reinforcement backing material sheet 307 may be provided on the conveyer system, which transports the reinforcement backing material sheet 307 in a direction such that it passes under the dispensing valve or nozzle 303 and also under the doctor blade 304. The doctor blade 304 removes excess dispensed coating from the sheet 307, allowing a desired amount of the coating to be transferred to the sheet 307 and compressed into the sheet. After the coating is controllably applied using the doctor blade 304, which may be adjustable in height to allow varying amounts of coating to be applied, the sheet 307 may pass into a heating and drying device 308, such as a tunnel oven. After the coating and drying process, the material may be hung for at least 8 hours to dry the sheet and reduce the moisture content before further processing steps. In some embodiments, the sheet 307 may be kept stationary, with the doctor blade 304 moved over the sheet to remove excess coating material.
  • FIG. 4 illustrates a Foulard application system that may also be used to apply the coatings. This application system is commonly used for coatings through the use of dip and squeeze technology. As shown in FIG. 4 , the backing material 401 is attached on a roll 402 that is mounted on an A-frame 403. The backing material 401 is then pulled by a plurality of motor-driven rollers 404, such that it is transported into a container 405 containing a slurry mixture. The backing material is then transported out of the container 405 and introduced to a mangle roller system 406, where a specific pressure can be applied onto the fabric backing material now coated with the slurry from the container, and the remaining slurry is squeezed out of the fabric. The coated backing material may then be introduced into a drying device 407, such as a tunnel dryer. As noted above, the systems described in FIGS. 1-4 may he used to apply one or more of the coatings onto the reinforcement backing material sheet, including base or intermediate coatings, When a base coating is applied, the sheet of material may then be dried and compressed or flattened pressed so that the surface of the sheet is leveled and even for further applications of additional coatings.
  • FIG. 5 illustrates an example of an embossing machine which may be used to flatten the surface of the reinforcement backing material with the base coat applied. Using this machine, the layers, and in particular the base-coating layer applied to the reinforcement backing material, may be pressed and flattened so they are level and even before a subsequent coating layer is applied. As shown in FIG. 5 , the embossing machine may include two plates 501, 502 that can be used to apply a controlled amount of pressure on the backing material sheets. The machine may further include inputs to allow a user to adjust the pressure 503, temperature 504, and time 505 of the embossing machine. When in use, a temperature and a pressure value are selected, and the sheet material is inserted into the machine and between the plates. The temperature and pressure are then applied for a selected time period with the desired side of the sheet facing up to flatten the base coated reinforcement material and prepare for the intermediate coating step. For example, a sheet of reinforcing material with the coated side facing up may be placed between the embossing plates 501 and 502. of FIG. 5 , and a pressure (kg/cm2) 503 may be applied at a temperature of 80° C. to 110° C. 504 while the upper embossing plate is moving down on the material for a fixed time.
  • After the base-coated reinforcement backing material has been compressed and flattened, the surface is smooth and leveled. FIG. 6 illustrates an example of such a reinforcement backing material with a base coat applied after it has been compressed and flattened. As shown in the figure, the coated sheet of material has a smooth, evenly coated, and non-sticky surface.
  • FIG. 7 illustrates a flow diagram of the procedural steps for creating a bio-based, substantially biodegradable textile product according to the systems and methods described herein. As shown in FIG. 7 , the process begins in step 710 with the application of a base coating onto a reinforcement backing material sheet. The base coating is applied as a slurry coating, using, for example, one or more of the systems as described with respect to FIGS. 1-4 . The base coating may be applied to one or more sides of the backing material. After the application of the slurry as a base coat to the backing material, the base coated backing material is dried using a drying mechanism, such as a tunnel oven or air dryer. For example, in order to ensure the base-coated sheet is sufficiently thy, a reaction/drying time of at least fifteen minutes may be set with a tunnel dryer system that includes an oven capable of applying a temperature between 85° C. to 120° C. Other drying temperatures and drying may be used to reduce the water content to an acceptable amount. When coating both sides, the coating process described above to apply a. base coat is applied to one side of the fabric sheet, which is then dried. Then, this same process may then be repeated on the other side of the fabric sheet. In order to avoid contamination or dirtying the first coated side, a sheet or other protective cover may be applied to any conveyer system or on the first coated side such that the first coated side is protected as the second side is coated. Once the base-coating process is successfully completed, the material is hand-dried by hanging the material at room temperature for a final drying. This hand-drying process may last at least a few hours until the moisture content is significantly decreased.
  • As shown in the flow diagram of FIG. 7 , once the materials have reached the minimum required moisture content, the process moves to step 720. In step 720, the surface of the sheet material with the base coats applied is flattened by using a pressing machine or embossing machine. This intermediate flattening process allows for the surface material to be leveled and evened while preparing for the next treatment step at 730. The base coated materials may be pressed, such as with an embossing machine applying a temperature and pressure with the desired side facing up. After the base-coated sheet is pressed and dried, the process moves to step 730 where one or more intermediate coatings are then applied. This intermediate coat may be applied as a thin layer on top of the one or more base coatings. The formulation of this intermediate coat may be different from the base coat, which can include mushroom and natural rubber materials mixed together in a slurry. In this step, the intermediate coating may only include the natural rubber material, such as latex, and any color pigments or dyes added thereto to achieve a desired color of the final product. No mushroom materials are included in the intermediate coating layers. The color pigments or dyes are for the final color adjustment while the natural rubber, such as latex, adds to the formed natural rubber of the textile sheet and adds additional performance to the material. The application of the intermediate coats may be performed in the same manner as the process for applying the base coats as discussed above. The thickness of the intermediate coat layer may be, for example, around 12 grams/ft2. After the intermediate coating layer is applied, the coated sheets are dried using the drying mechanism, such as a drying tunnel system. The drying may be performed at 100° C. to 120° C. for a duration of at least 15 minutes. When using a drying tunnel system, the speed of a conveyer transporting the sheet of material through the drying tunnel may be adjusted such that the sheet is dried in the tunnel oven for at least 15 minutes. The coated panels may also be hung to ensure they are sufficiently dry for further processing steps. The intermediate coated sheets are then prepared for further processing in step 740.
  • Step 740 of FIG. 7 is directed to the application of the final coat, also known as the topcoat. The formulation of the topcoat is based on the desired performance needs of the final materials. The main ingredients and supporting agents of the topcoat include water-based polyurethane (bio-based) and other performance giving water-based substances. The application of the final top-coat is applied either by using an industry spray application line with a drying tunnel directly attached thereto, or a roller printing application system and drying system. Test results of the performance of the materials suggest that good results can be achieved with an application of the topcoat with amounts of up to, for example, around 10 grams per square feet. After the final topcoat is applied and set, the coated sheet may then be trimmed and cut at step 750 to the desired thickness, size, and shape.
  • FIG. 8 shows an example of the construction of a fully coated reinforcement backing. As shown in the figure, there is a layer of reinforcement backing material 801, such as non-woven material or woven material, which is coated and penetrated with a first base coat-802 and an intermediate coat-803. The base coat 802 may be applied on one or both sides, and the intermediate coat layer may be applied on top of the base coat. When both sides are base coated, the intermediate layer can be selectively applied to one or both of the base coated sides. Finally, a top coat layer 804 is applied on top of the intermediate layer. When both sides contain an intermediate layer, the top coat may be applied to one or both of the intermediate layered sides. The top coat 804 can be applied through a roller coater system or a spray carousel.
  • As shown in FIG. 9 , when it is desired to adjust the thickness of the final coated sheet, a splitting machine or other cutting device may be used to trim and cut away excess material to make a textile material of desired thickness. For example, the final sheet of material may be split into final thicknesses ranging from 0.5 mm to 1.8 mm. FIG. 9 illustrates an example of a splitting machine for splitting used to adjust the thickness of the material. The splitting machine includes a blade 901, such as a band knife. Two or more rollers 902 may be used to transport sheet of material 903 such that the blade 901 removes a desired amount to adjust the thickness. The height of the blade relative to the sheet of material may be adjusted to adjust the amount trimmed. Typically, the back side of the material that includes only the reinforcement backing material and some base coating is cut so that layers 801-804 of FIG. 8 are maintained upon splitting of the material. Other cutting devices, such as knives, shears, blades, or scissors may be used to further adjust the size and shape of the trimmed material.

Claims (20)

1. A method for producing a bio-based textile material, comprising:
applying a first coating to a reinforcement backing material, wherein the first coating includes a slurry containing mushroom material and natural rubber material,
drying the reinforcement backing material with the first coating;
flattening a surface of the reinforcement backing material with the first coating,
applying a second coating to the reinforcement backing material, wherein the second coating includes a slurry containing a natural rubber material and wherein the second coating is applied on top of the first coating;
applying a third coating to the reinforcement backing material, wherein the third coating is applied on top of the second coating; and
adjusting the thickness of the reinforcement backing material.
2. The method of claim 1, wherein the reinforcement backing material is a woven or a non-woven fabric.
3. The method of claim 1, wherein the natural rubber is latex.
4. The method of claim 1, wherein the first, second and third coating comprise separate layers.
5. The method of claim 1, wherein the first coating is a homogenous solution, continuously mixed as it is applied to the reinforcement backing material using at least one of a roller coater machine, doctor blade, Foulard system, brushes or other application devices that spread the first coating.
6. The method of claim 1, wherein the thickness of the reinforcement backing material is adjusted by splitting the reinforcement backing material based at least in part on performance requirements of the No-based textile material.
7. The method of claim 1, wherein a roller coater system is used to apply the at least one of the first coating, the second coating or the third coating, the roller coater system comprising:
a container for holding the slurry;
a nozzle or valve in the container to control the amount of slurry, the nozzle or valve connected to a controllable pump allowing a user to adjust the amount of slurry coating dispensed;
an application coating roller controllable to rotate to contact the reinforcement backing material with an adjustable amount of pressure, wherein the nozzle or valve dispenses the slurry from the container onto the application coating roller;
one or more scraper blades to remove excess slurry, wherein the thickness of a coating applied to the reinforcement backing material by the application coating roller is based on the amount of slurry released from the nozzle.
8. The method of claim 7, wherein the thickness of the coating applied to the reinforcement backing material by the application coating roller is adjusted based on the distance between the one or more scraper blades and the application coating roller or the amount of pressure applied to the roller by the one or more scraper blades
9. The method of claim 1, wherein at least one of the first coating, the second coating or the third coating is applied on one or both sides of the reinforcement backing material.
10. The method of claim 1, wherein the thickness and amount of the reinforcement backing material, the first coating, the second coating and the third coating is adjusted by trimming or cutting to a shape, size and thickness.
11. A system for creating a bio-based sheet textile material, comprising:
a reinforcement backing material;
a roller coater system for applying a first coating, a second coating and a third coating to the reinforcement material,
the first coating including a slurry containing mushroom material and natural rubber material;
a drying mechanism for drying the reinforcement backing material with the first coating;
an embossing machine for flattening a surface of the reinforcement backing material with the first coating;
the second coating including a slurry containing a natural rubber material and wherein the second coating is applied on top of the first coating and the third coating is applied on top of the second coating; and
a splitting device for adjusting the thickness of the reinforcement backing material,
12. The system of claim 11, wherein the reinforcement backing material is a woven or a non-woven fabric.
13. The system of claim 11, wherein the natural rubber is latex.
14. The system of claim 11, wherein the first, second and third coating comprise separate layers.
15. The system of claim 11, wherein the first coating is a homogenous solution, continuously mixed as it is applied to the reinforcement backing material using at least one of a roller coater machine, doctor blade, Foulard system, brushes or other application devices that spread the first coating.
16. The system of claim 11, wherein the thickness of the reinforcement backing material is adjusted by splitting the reinforcement backing material based at least in part on performance requirements of the bio-based textile material.
17. The system of claim 11, wherein the roller coater system is used to apply the at least one of the first coating, the second coating or the third coating, the roller coating system comprising:
a container for holding the slurry;
a nozzle or valve in the container to control the amount of slurry, the nozzle or valve connected to a controllable pump allowing a user to adjust the amount of slurry coating dispensed;
an application coating roller controllable to rotate to contact the reinforcement backing material with an adjustable amount of pressure, wherein the nozzle or valve dispenses the slurry from the container onto the application coating rollier;
one or more scraper blades to remove excess slurry, wherein the thickness of a coating applied to the reinforcement backing material by the application coating roller is based on the amount of slurry released from the nozzle.
18. The system of claim 17, wherein the thickness of the coating applied to the reinforcement backing material by the application coating roller is adjusted based on the distance between the one or more scraper blades and the application coating roller or the amount of pressure applied to the roller by the one or more scraper blades.
19. The system of claim 11, wherein at least one of the first coating, the second coating or the third coating is applied on one or both sides of the reinforcement backing material.
20. The system of claim 11, wherein the thickness and amount of the reinforcement backing material, the first coating, the second coating and the third coating is adjusted by trimming or cutting to a shape, size and thickness.
US18/078,739 2021-12-10 2022-12-09 Method of producing a bio based textile material and materials and products made thereby Pending US20230183918A1 (en)

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GB828852A (en) * 1957-01-16 1960-02-24 Witco Chemical Company Ltd Improved method of applying a backing to woven or non-woven floor coverings
DE4013319A1 (en) * 1990-04-26 1991-10-31 Pagendarm Gmbh DEVICE FOR APPLYING A LAYER TO A SUBSTRATE
US9485917B2 (en) * 2006-12-15 2016-11-08 Ecovative Design, LLC Method for producing grown materials and products made thereby
IT201800010869A1 (en) * 2018-12-06 2020-06-06 Mogu S R L Method of producing fungal mats and materials made therefrom
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