WO2016071264A1 - Procédé de production de tapis tufté et pâte destinée à être utilisée dans ledit procédé - Google Patents

Procédé de production de tapis tufté et pâte destinée à être utilisée dans ledit procédé Download PDF

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Publication number
WO2016071264A1
WO2016071264A1 PCT/EP2015/075412 EP2015075412W WO2016071264A1 WO 2016071264 A1 WO2016071264 A1 WO 2016071264A1 EP 2015075412 W EP2015075412 W EP 2015075412W WO 2016071264 A1 WO2016071264 A1 WO 2016071264A1
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WO
WIPO (PCT)
Prior art keywords
thixotropic
plant oil
constitution
paste
yarns
Prior art date
Application number
PCT/EP2015/075412
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English (en)
Inventor
Christiaan Mathias Hubertus Gerard Reutelingsperger
Renate POLSTER
Original Assignee
Erutan B.V.
Hobum Oleochemicals Gmbh
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 Erutan B.V., Hobum Oleochemicals Gmbh filed Critical Erutan B.V.
Publication of WO2016071264A1 publication Critical patent/WO2016071264A1/fr

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Classifications

    • 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
    • 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
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0063—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf
    • D06N7/0071—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing
    • 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
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/04—Vegetal 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
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/04—Vegetal fibres
    • D06N2201/042—Cellulose fibres, e.g. cotton
    • 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
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/04—Vegetal fibres
    • D06N2201/042—Cellulose fibres, e.g. cotton
    • D06N2201/045—Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
    • 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
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/06—Animal fibres, e.g. hair, wool, silk
    • 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
    • D06N2203/00—Macromolecular materials of the coating layers
    • D06N2203/02—Natural macromolecular compounds or derivatives thereof

Definitions

  • the present invention pertains to a method to produce a tufted carpet, comprising tufting yarns into a primary backing thereby forming an intermediate product, and mechanically fixing the yarns to the backing by applying a binding constitution to the back of the carpet
  • Floor coverings such as rugs or carpets often consists of dyed pile yarns, a primary support material called primary backing, and in many cases a secondary backing that adds strength to the carpet.
  • the yarns are usually contacted with the primary backing material by a process called tufting, which is a type of textile weaving in which a thread is attached to the support material by mere insertion in that material.
  • tufting which thus includes weaving, stitching and other methods wherein the yarns are simply attached to the support by mere insertion therein
  • a binding constitution (which could be as simple as an adhesive) is used to provide adequate mechanical bonding between the yarns and the primary (and optional) secondary backing.
  • Synthetic polymers are for example nylon (which is in 60-70% of all carpet), acrylics ( ⁇ 15%), polyester (less than 15%), polypropylene (less than 5%) and blends thereof. These pile yarns are dyed using a variety of organic chemical compounds, or occasionally, organometallic complexes.
  • the backing is in most cases made of woven or non woven polypropylene.
  • the binding constitution used to bind the backings together is almost universally synthetic rubber latex. Latex based floor coverings have several disadvantages. Firstly, since the latex is water-based, latex coverings tend to be non-resistant to moisture.
  • One solution is to replace the conventional latex adhesive with synthetic polymer adhesives such as polyolefines and polyurethanes.
  • synthetic polymer adhesives such as polyolefines and polyurethanes.
  • This is for example known from US 2010/0260966, which discloses a carpet tile that includes a face fabric having a top surface and a base, and a dimensionally stabilized non-woven cushion material having a stabilizing material incorporated therein.
  • the non- woven cushion material is attached to the face fabric by using a synthetic polymer adhesive, in which adhesive the cushion material as well as the fabric are embedded for adequate bonding.
  • Another proposal is to replace the latex by starch based
  • compositions see for example W021012/000609 but these compositions are prone to biodegradation during use.
  • Hot melt adhesives are popular in conventional roll carpets since they are relatively inexpensive, readily available and can be recycled more easily.
  • Hot melt adhesives are also used in carpet tiles, as is known for example from WO 2007/127222. Given the brittle nature of hot melt adhesives, a very high degree of embedding of the yarns in the adhesive is necessary to provide adequate strength. However, to deep embedding may be disadvantageous for the appearance and feel of the carpet. The find the proper balance between embedding to provide adequate mechanical strength and look and feel of the carpet is difficult.
  • the binding constitution used is a thixotropic constitution comprising a cross linkable plant oil and a curing agent, the method comprising applying the thixotropic constitution as a layer to the back of the intermediate product and activating the curing agent to induce cross- linking of the plant oil.
  • This invention was based on several recognitions. First of all, it was found that be using a thixotropic binder, one creates a great amount of freedom in the process of applying the binder.
  • the thixotropic properties may provide for a low viscosity during processing of the binder, but may also provide for an almost instant thickening once the binder is applied to the backing.
  • any art known binder materials one had to find the right viscosity to provide for adequate processing while at the same time prevent that the binder penetrates too deep into the intermediate and ruins negatively influences the ultimate carpet pile properties. This made the processing of the binder very difficult.
  • a low viscosity during processing may be provided while at the same time, as soon as the binder is applied to the back of the intermediate, the binder turns into a very viscous paste that does only penetrate the first tens of micrometers up to typically a millimeter, just enough the bind the yarns, but not too deep to negatively interfere with the piles. Needed to actually achieve good binding however is a curing agent that is premixed with the plant oil. If not, the curing agent is typically not able to diffuse fast enough through the highly viscous binder layer and therefor, curing will be too slow to maintain good pile properties. This on its turn led to the recognition that the binder has to be applied as a layer (i.e. a continuous covering forming an overlaying part of the back of the intermediate), and not as a pattern of dots of binder.
  • An advantage of the present invention is that the binder is based on the presence of a cross-linkable plant oil.
  • This is not only a natural resource that is widely available and therefore relatively inexpensive, it also provides the option to produce 100% natural type of carpet.
  • these plant oil such as soy bean oil, sun flower oil, linseed oil, rapeseed oil, calendula oil, euphorbia oil etc. are too thin to be applied as a cross- linkable binder constitution to the back of the intermediate of a tufted carpet, even in the presence of a fast curing agent. They simply penetrate too fast into the intermediate product and negatively interfere with the properties of the pile of the carpet. Only when having thixotropic properties and being applied as a layer, they appear to be usable as a binder without interfering too much with the properties of the pile of the carpet.
  • the present invention also pertains to a thixotropic paste comprising a cross linkable plant oil and a curing agent, in particular for use in the method according to the invention.
  • Carpet is a textile floor covering consisting of an upper layer of pile attached to a backing.
  • the pile is generally made from wool, an artificial fibre or mixtures thereof such as wool and TENCELTM.
  • Types of carpets are for example woven, needle felt, knotted or tufted.
  • a thixotropic constitution is a constitution that is a highly viscous fluid under static conditions (like tooth-paste, ketchup etc.), but which becomes thin under stress (when shaken, agitated etc,), a property which is called shear thinning. This means that the very thick fluid will flow (become thin, less viscous) over time when shaken, agitated, or otherwise stressed.
  • a Nucleophilic group is an atom or group that contains an electron or electron pair available for bonding; in chemical reactions a nucleophilic group seeks a positive centre such as the nucleus of an atom or the positive end of a polar molecule or group.
  • nucleophilic groups examples include amines (-NH2), thiols (-SH) and hydroxyl (-OH) groups.
  • a cross-linkable material is a material comprising molecules that have two or more reactive groups such that each of those molecules can form a cross-link (a molecular bridge) between at least two other molecules.
  • Cross-linking is often initiated by heat, pressure, change in pH, or radiation.
  • a curing agent is an agent able to induce covalent reactions between molecules.
  • a thixotropic agent is added to the constitution to provide the thixotropic properties.
  • a cross-linkable plant oil containing constitution has thixotropic properties without adding a thixotropic agent, for example when a part of the cross-linkable groups of the oil have already been cross linked to form large gelator molecules, it is preferred that such an agent is added in addition to the plant oil. This way, more freedom is created in providing the thixotropic properties (e.g. the viscosity under static condition, the viscosity under agitation, the time needed for the constitution to reach equilibrium viscosity etc.).
  • the cross linkable plant oil is an epoxy modified plant oil (also known as epoxidized plant oil), in particular an epoxy modified plant oil with an oxirane content higher than 6%, for example an epoxy modified linseed oil.
  • Epoxy modified plant oils as such are known in the art, e.g. as described in WO 2009/1 14935. It has now been found that these oils are in particular suitable for use as a binder constitution for providing a tufted carpet with good properties with regard to the bonding of the piles and look and feel of the carpet.
  • the curing agent is a bifunctional agent (which does not exclude that the agent has more than two functional groups) that reacts with the cross linkable plant oil.
  • a bifunctional agent is therewith build in the cross-linked network which provides for good durability of mechanical and (physico) chemical properties.
  • Typical examples of such agents are multivalent carboxylic compound such as polyfunctional acids (which term includes the anhydrides of these acids).
  • the thixotropic agents is chosen from the group consisting of particulate material, synthetic polymer, natural polymer, protein, and small molecule gelator.
  • a small molecule gelator is a type of gelator that consist of small (often soluble) molecules, but which molecules upon cooling of the constitution crystallize to form large molecules that provides for the gelling properties. Such small molecule gelator molecules are for example described in US patent US 6,471 ,758 B1 .
  • the thixotropic agent is particulate material, chosen from the group of silica and clay. Although commonly known as thixotropic agents, these compounds have been to be particularly suitable for use in binding constitution for providing a tufted carpet.
  • the thixotropic constitution comprises lignin.
  • Lignin is a quinone precursor of natural origin, which quinones on their turn have two reactive carbonyl nuclei which are highly reactive to nucleophilic groups such as amines (-NH2), thiols (- SH) and hydroxyl (-OH) groups. Reaction may lead to Schiff-base formation and 1 ,4 Michaels additions leading to polymer formation. It is known that quinones may react to form large polymers, and at the same time, in the presence of a compound that has multiple (i.e. at least two) nucleophilic groups, such as the cross-linkable plant oils, may provide cross-links with these compounds.
  • lignin may provide for a better bonding of the tufted yarns to the primary backing.
  • an enzyme is used to convert the lignin.
  • lignin is known to be very stable and indigestible by animal enzymes, but is susceptible to enzymatic conversion by a variety of enzymes to form reactive nuclei.
  • enzymes are for example enzymes produced by some bacteria or fungi such as lignin peroxidase (from the white-rot fungus Phanerochaete chrysosporium) manganese peroxidase, laccase or cellobiose dehydrogenase.
  • the use of enzymes may contribute to easy conversion of the precursor into an actual (reactive) quinone.
  • no synthetic reactants are needed in this embodiment .
  • this embodiment may lead to a 100% recyclable textile product, e.g. through natural decomposition.
  • the yarns are made of a material comprising nucleophilic groups. This may lead to covalent bonds between the components of the binder constitution and the yarns, and thus to an even more durable bonding of the yarns to the backing.
  • the yarns comprise keratin fibres, preferably wool fibres. These natural fibres comprise nucleophilic amine groups.
  • the primary backing is a fabric comprising fibres of natural origin, preferably cellulosic fibres such as cotton, jute, rayon, lyocell (such as
  • the present invention can e.g. be advantageously used in connection with yarns and or a support material comprising biodegradable materials, such as biodegradable polymers.
  • biodegradable materials such as biodegradable polymers.
  • Such polymers will decompose in natural aerobic (e.g. composting) and/or anaerobic (e.g. landfill) environments. They may be composed of either biopolymers, which may be naturally produced polymers or polymers whose components are derived from renewable raw materials, but may also be petroleum-based, or a blend of one or more of these types of polymers. Most aliphatic polyesters are biodegradable due to their potentially hydrolysable ester bonds.
  • Typical examples of naturally produced biodegradable polymers are polyhydroxyalkanoates (PHA's) like poly-3-hydroxybutyrate (PHB), polyhydroxyvalerate (PHV) and polyhydroxyhexanoate (PHH), and starch, cellulose, keratin and derivatives thereof.
  • PHA polyhydroxyalkanoates
  • PVB poly-3-hydroxybutyrate
  • PV polyhydroxyvalerate
  • PH polyhydroxyhexanoate
  • starch cellulose, keratin and derivatives thereof.
  • a biodegradable polymer from a renewable resource is for example polylactic acid (PLA).
  • PHA polylactic acid
  • biodegradable polymers are polybutylene succinate (PBS), polycaprolactone (PCL), polyvinylacetate (PVA) and cellulose esters like cellulose acetate, nitrocellulose and their derivates such as celluloid.
  • PBS polybutylene succinate
  • PCL polycaprolactone
  • PVA polyvinylacetate
  • cellulose esters like cellulose acetate, nitrocellulose and their derivates such as celluloid.
  • the binding constitution used in the examples pertains to a mixture of a) epoxidized plant oil, b) a multivalent carboxylic compound as curing agent, and c) a thixotropic agent.
  • epoxidized plant (vegetable) oil any product obtainable by epoxidation of naturally occurring unsaturated triglycerides can be used.
  • triglycerides are soybean oil, sunflower oil, rape seed oil, safflower oil, linseed oil, castor oil, perilla oil, lallemantia iberica oil, mixtures or derivatives thereof or new cultures of oil containing plants.
  • multivalent carboxylic compound any product with an anhydride or an acid group can be used (the term acid also includes the corresponding anhydride).
  • a preferred compound is a mixture of a polycarboxylic acid with a reaction product of a
  • polycarboxylic acid and a polyol.
  • polycarboxylic acid any compound with an anhydride or an acid group can be used. Non-limiting examples are acyclic
  • polyfunctional acids or anhydrides of them such as maleic acid, maleic anhydride, malic acid, succinic acid, citric, phosphoric acid, oxalic acid, malonic acid, terahydrophthalic anhydride, norbornendicarboxylic anhydride, citraconic anhydride,
  • methylhexahydrophthalic anhydride aromatic or heteroaromatic polyfunctional acids or anhydrides of them such as phthalic acid, phthalic anhydride, trimellitic anhydride, pyromellitic dianhydride and any mixtures or derivatives of thereof.
  • any compound with two or more hydroxylic groups can be used.
  • Non-limiting examples are ethanediol, propanediol, ethylene glycole, diethylene glycole, triethylene glycole, propylene glycole, dipropylene glycole, tripropylene glycole, glycerol, trimethylolpropane, pentaerythritol and any mixtures or derivatives of thereof.
  • the thixotropic agent which may be silica, serves to adjust the viscosity of the composition in use: thin viscous while agitated and thick viscous when under static conditions (e.g. after being applied as a thin layer on the back of an intermediate product in the sense of the present invention).
  • the required physical parameters depend on various factors such as the type of yarns, the type of tufting, the type of piles etc.
  • the skilled person can adjust the required viscosity, using one or more thixotropic agents (optional in addition to inherent thixotropy of the plant oil, if any) in various amounts and by adjusting the process parameters such as temperature and process speed (the latter of course determining for a large part the stress in the binding constitution and thus, the viscosity under shear).
  • thixotropic agents may be modified Castor oil (hydrogenated castor oil), sulfonates, gums, organosilicones, cellulosics (CMC, HMC, HPMC and others), PVA (poly vinyl alcohol), clays (bentonite, montmorillonite), polyurethane polymers, (meth)acrylic polymers (Carbomers), latex, styrene/butadiene copolymers, polyurea derivatives, polysaccharides (starches, vegetable gums, carrageen, pectin, Alginat), proteins (casein, collagen, gelatin, Agar), and others.
  • Castor oil hydrogenated castor oil
  • sulfonates gums, organosilicones, cellulosics (CMC, HMC, HPMC and others), PVA (poly vinyl alcohol), clays (bentonite, montmorillonite), polyurethane polymers, (meth)acrylic polymers (Carbomers),
  • a multifunctional carboxylic acid was prepared by the reaction of one equivalent monoethylene glycol with two equivalents phthalic anhydride. 62 g of monoethylene glycol and 296 g of phthalic anhydride were mixed and heated up to 140 °C. The mixture is stirred at this temperature for further three hours.
  • a multifunctional carboxylic acid was prepared by the reaction of one equivalent trimethylolpropane with three equivalents phthalic anhydride. 134 g of
  • trimethylolpropane and 444 g of phthalic anhydride were mixed and heated up to 140 °C. The mixture is stirred at this temperature for further three hours.
  • a multifunctional carboxylic acid was prepared by the reaction of one equivalent monoethylene glycol with two equivalents trimellitic anhydride. 62 g of monoethylene glycol and 384 g of trimellitic anhydride were mixed and heated up to 170 °C. The mixture is stirred at this temperature for further three hours.
  • a multifunctional carboxylic acid was prepared by the reaction of one equivalent tnmethylolpropane with three equivalents maleic anhydride. 134 g of tnmethylolpropane and 294 g of maleic anhydride were mixed and heated up to 80 °C. The mixture is stirred at this temperature for further five hours.
  • a multifunctional carboxylic acid was prepared by the reaction of one equivalent monoethylene glycol with two equivalents phthalic anhydride. 62 g of monoethylene glycol and 296 g of phthalic anhydride were mixed and heated up to 140 °C. The mixture is stirred at this temperature for further three hours. It is then cooled to room temperature. 200 g of methylhexahydrophthalic anhydride are added while stirring.
  • epoxidized plant oils such as epoxidized soybean oil can be provided. These oils are obtainable as Merginate oils from Hobum Oleochemicals, Hamburg, Germany.
  • various tufted carpets (5/32 loop pile, 1/2 loop pile and 1/8 cut pile), all of them comprising wool yarns tufted into a primary backing of (single/single) woven from either TencelTM (available from Lenzing AG, Lenzing, Austria) or polypropylene (PP, available from Propex, Gronau, Germany) are formed, wherein the yarns are mechanically fixed to the backing by applying a binding constitution to the back of the intermediate product.
  • the binding constitution used is a thixotropic constitution comprising as a cross linkable plant oil Merginate ELO, the curing agent of Example 5, and ACEMATT TS 100 silica (available from Evonik Industries, Essen Germany).
  • FIG. 1 The process setup is given in Figure 1 .
  • the intermediate product 1 is depicted, having a front face 1 1 and a back face 21.
  • the intermediate product 1 is fed over a large roller 2 to a nip 8 formed by rollers 3 and 4.
  • the diameter of roller 3 is 210 mm
  • the diameter of roller 4 is 1 10 mm.
  • the pressure with which these rollers form the nip 8 is 240 kg per meter.
  • the intermediate product is actually forced to proceed, in this case by rotating roller 3 at a (surface) speed of 1.2 meters per minute.
  • Roller 3 on its turn forms nip with static roller 5 which has a diameter of 1 10 mm.
  • the binding constitution 10 In the nip between these rollers is the binding constitution 10.
  • a thin layer 1 1 of this constitution forms on the surface of roller 3.
  • This layer is transferred to the back 21 of the intermediate product in nip 8.
  • the nip between the rollers 3 and 5 has a variable width (see Table 1 ) in order to adjust the thickness of the layer 1 1.
  • the binding constitution is applied at room temperature. Thereafter the binding constitution is cured by feeding the carpet through an oven at 130°C for 10 minutes.
  • the binding constitution 10 is made by mixing the various constituents in a Hobarth model AE 120 mixer (having a capacity of approximately 10 liters). In this mixer 4000 grams of the epoxidized plant oil is mixed with 2000 grams of curing agent and 600 grams of silica during 10 minutes. Thereafter, the binding constitution is ready for application as described here above.
  • Example 8 binding constitutions with lignin
  • the methods as described in example 7 can be repeated with another binding constitution comprising lignin.
  • the mixture was made using 1000 grams of Merginate oil, 410 grams of curing agent, 140 grams of silica and 140 grams of lignin (available from Borregaard, Sarpsborg, Norway). The rest of the setup is identical.
  • a laccase enzyme is added to the binding constitution in order to convert the lignin to a reactive molecule. The curing temperature is then decreased to 100°C, and the time for curing prolonged.
  • Tufted carpet as described in example 7, (5/32 loop pile, wool on TencelTM) was used for further trials wherein a paste of thixotropic cross linkable plant oil comprising a curing agent was used to create sufficient tuft bind.
  • the paste in this case was an epoxy modified linseed oil comprising silica as a thixotropic agent. This paste was hardened at 130°C for about 20-25 minutes.
  • Table 2 gives the amount of paste applied in grams per square meter and the resulting tuft bind in N. A tuft bind above 20 N is adequate for use as a carpet.
  • Table 2 Tuft bind of woollen carpet

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

La présente invention concerne un procédé de production d'un tapis tufté, consistant à tufter des fils en étoffe support de sorte à obtenir ainsi un produit intermédiaire, et à fixer mécaniquement les fils au support par application d'une constitution de liaison sur l'endos du tapis, la constitution de liaison utilisée consistant en une constitution thixotrope comprenant une huile végétale réticulable et un agent de durcissement, le procédé consistant à appliquer la structure thixotrope sous la forme d'une couche sur l'endos du produit intermédiaire et à activer l'agent de durcissement pour provoquer la réticulation de l'huile végétale.
PCT/EP2015/075412 2014-11-03 2015-11-02 Procédé de production de tapis tufté et pâte destinée à être utilisée dans ledit procédé WO2016071264A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10174509B2 (en) 2017-06-01 2019-01-08 Mission V Sports, LLC Flooring system including a material displaying dilatant properties, and methods for installation of an athletic flooring system
JP2021126396A (ja) * 2020-02-14 2021-09-02 株式会社ダスキン トイレマット

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