WO2015002555A1 - Biodegradable, combustible or noncombustible nonwoven, process of manufacture and use - Google Patents

Biodegradable, combustible or noncombustible nonwoven, process of manufacture and use Download PDF

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Publication number
WO2015002555A1
WO2015002555A1 PCT/PL2014/000070 PL2014000070W WO2015002555A1 WO 2015002555 A1 WO2015002555 A1 WO 2015002555A1 PL 2014000070 W PL2014000070 W PL 2014000070W WO 2015002555 A1 WO2015002555 A1 WO 2015002555A1
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Prior art keywords
fibers
biodegradable
fiber
nonwoven web
polymer
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PCT/PL2014/000070
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French (fr)
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WO2015002555A8 (en
Inventor
Jędrzej ŁANIECKI
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Łaniecki Jędrzej
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Publication of WO2015002555A1 publication Critical patent/WO2015002555A1/en
Publication of WO2015002555A8 publication Critical patent/WO2015002555A8/en

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Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43835Mixed fibres, e.g. at least two chemically different fibres or fibre blends
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425Cellulose series
    • D04H1/4258Regenerated cellulose series
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326Condensation or reaction polymers
    • D04H1/435Polyesters
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)

Definitions

  • the present invention is a biodegradable non-woven fabric or a non-flammable combustible, its preparation method and application.
  • Textile blend which is made of non-woven fabric composed of viscose fibers and polymeric fibers selected from the group consisting of aliphatic copolyesters - aromatic or PLA, or a mixture thereof, may additionally comprise flax fibers. Obtained from the biodegradable nonwoven textile blend is used in the agro industry, packaging industry, decorative and home.
  • Biodegradable plastics are a new generation of materials on the market, like a plastic and conventional polymers may be used in different applications, depending on the requirements of the market.
  • Replacing plastic biodegradable polymers is a response to the growing problem of environmental pollution spent product waste, lack of space for their storage and a long period of decay. Added to this are problems with the recycling processes of mechanical and chemical related to segregation and waste treatment. In addition, these processes require large amounts of thermal energy. Furthermore, the polymers can not physically be recycled repeatedly. The solution is not the disposal of plastic waste energy recovery in the combustion process, because not all materials can be burned without negative impact on the environment.
  • biodegradable plastics can be composted.
  • This natural organic recycling process characterized by a negligible energy consumption and does not generate environmentally harmful pollutants.
  • environmental factors such as temperature, humidity
  • micro-organisms bacteria, fungi.
  • Degradation products are carbon dioxide, methane, water and biomass.
  • Production materials combine the properties of conventional thermoplastics and biodegradability fits perfectly into the meaning of the term sustainable development.
  • the use of these polymers for the production of renewable raw materials of plant origin has a positive impact on reducing greenhouse gas emissions and harmful pollutants that arise during the processing of fossil fuels.
  • the prior art is known textile composite made from blends of viscose fiber, flax fiber and biodegradable thermoplastic resin.
  • a composite comprising a mixture of textile fibers and viscose tykowo-biodegradable thermoplastic resin characterized in that the bast fibers with a fiber viscose blends comprise 60 to 90% viscose fiber and are contained in an amount of 10 - 40%, wherein the fiber mixture obtained in the process carding and / or combing the purity of bast fibers is contained in a range of 0 - 6% of impurities, the thinness of the fiber is contained in the range of 0.17 - 2.70 tex, and the fiber length within the range from 10 to 180 mm, wherein the predetermined length of the fiber are contained in specified proportions relative to each other, and that viscose fiber is 30 - 60% shorter than the average length of the bast fibers, and the percentage of the resin is 10 - 25% in the composite.
  • the present invention also provides a process for producing composite and its application
  • a biodegradable non-woven fabric for use in the agricultural arena, comprising fibers formed of several layers of fleece with a single waste materials, recycled and re-natural origin, preferably such as cotton, wool, linen, hemp, jute, sisal, coconut and artificial casein and cellulose fibers, of a weight of from 5 to 50g/m2, is dispensed into the interior portion of plant materials in the form of a dried particulate product rich in nitrogen compounds is further consolidated mechanically by needling needlesistpychajqcymi all layers, then the non-woven fabric is obtained having a mass surface from 100 to 500g/m2.
  • the fabric is composed with from 25% to 75% by weight in proportion to the fibrous mass of dried particulate product rich in nitrogen compounds.
  • Woven known from P 334 932 consists of a middle layer, which is a fleece band containing 50% of flax fibers and 50% polypropylene fibers, which is the middle layer on both sides of a fleece band of varying basis weight and containing from 70% to 75% of polypropylene fibers and from 25% to 30% polyester fibers.
  • the needling teaming fleece band is in any case start only on the outer surface of one of the outer layers of nonwoven fabric.
  • a method for producing non- woven consists in applying to the band constituting the outer layer of fleece backing fleece band, and a middle layer constituting the teaming needled fleece these two bands entangling of the outer layer from the backing. When applied to the fleece band center layer outer layer constituting the cap followed by needling on both sides, connecting the outer nonwoven layer of non-woven fabric to the middle layer.
  • the aim of the invention is to provide an improved textile mixture which ensures a fully biodegradable nonwoven fabric, and having high tear strength in the longitudinal and transverse directions, a very good elasticity, flexibility, puncture resistance and abrasion resistance.
  • the invention aims to provide a nonwoven fabric with improved properties and improved adhesion of the hydrophilic medium and under conditions of high humidity.
  • the aim of the invention is to provide a fully biodegradable nonwoven flat combustible or noncombustible, which allows for optimal use of the characteristics of individual fibers and achieve improved physical and chemical properties than those currently available on the market of biodegradable nonwovens.
  • the aim of the invention is to provide a nonwoven material which, because of its excellent strength parameters will not replace the biodegradable nonwoven fabrics currently used in space due to the high physical and chemical resistance, the nonwoven fabric completely biodegradable.
  • the present invention is combustible or biodegradable nonwoven fabric of a blend of non- combustible fiber containing viscose textile and polymer fibers, characterized in that the polymer fibers are selected from aliphatic-aromatic copolyesters or PLA or their mixtures and are 80% -20% of the total weight of the product, while the viscose fibers constitute 20% -80% of the total weight of the product, wherein the length of the polymer fibers and viscose fibers, the length is contained in the mixture in the range of 80 to 180 mm, and the thickness of the fibers is 0.17 - 2.0 tex.
  • the nonwoven fabric further comprises a bast fiber. More preferably, the bast fibers are flax fibers.
  • the nonwoven fabric comprises 35% of bast fibers and 25-35% polymer fibers and 40-30% of viscose fibers.
  • a maximum size limit ie bast fiber amount and 35% of the polymer fiber in the range of 25 - 35% and balance the total weight of the viscose fiber.
  • the aliphatic-aromatic copolyesters are selected from the group consisting of poly (ethylene-co-butylene adipate), poly (ethylene-co-butylene succinate), poly (adipate-co- terephthalate), poly (adipate-co-propylene terephthalate) , poly (sebacate-co-butylene terephthalate).
  • the length of the polymer fibers and viscose fibers is 80-150 mm.
  • the length of bast fibers is 80 -180 mm.
  • the length of bast fibers is 80-170 mm.
  • each fiber is dictated by the developed technology of manufacturing the finished product and is reflected in the strength of the resulting nonwoven.
  • the degree of contamination of flax fibers does not exceed 5%.
  • This percentage of contaminants in the process of combing / grzeblenia influences the strength of the fibers of the finished product and the appearance of the finished product such as blinds.
  • the biodegradable non-woven fabric further comprises a thermoplastic resin in an amount of 3 - 35% in the finished product. More preferably, the biodegradable thermoplastic resin is 3-5% by weight of the finished product.
  • the screen printing technique using zadrukach nonwoven contains up to 35% of the total weight of the polymer fiber.
  • the nonwoven contains flame retardants in an amount of 3-30% or 6-24% or 5- 17%.
  • Another object of the invention is a process for producing nonwovens according to the invention, as defined above, characterized in that it comprises weighing out, the alignment of blended fiber carding and introduction of the input tray, wherein the fleeces are produced elementary wherein the fleece is longitudinally pre-formed and then hit the cross stacker in a next step extending fleece, fleece and then amplified by a needling process, and then introduced into a non-woven polymer bath containing impregnating agent is squeezed out excess impregnating agent, and so the resulting nonwoven fabric is dried.
  • the step is carried out needling needling bilateral - top and bottom.
  • a water needl Preferably, a water needl
  • the impregnating agent is an aqueous solution of a polymer, preferably vinyl acetate.
  • a polymer preferably vinyl acetate.
  • Another object of the invention is the use of the nonwoven fabric of the invention as defined above for the manufacture of decorative articles, packaging, blinds, shutters, medical supplies.
  • flax fiber and viscose was dictated by improving parameters: increase adhesion and improving the hydrophilic properties under conditions of medium and high humidity.
  • Nonwoven fabric made of pure polymer had the important parameters of the corresponding level, while the polymer fibers have led to increased flexibility and strength of the product and tear to draw the finished nonwovens.
  • the proportion of polymer relative to the use of the fiber viscose fiber at a constant weight of the final product allows to control water absorption, which is an important parameter when used in the printing industry and the medical and agrarian.
  • Adding flax to the mix can also increase reflectance and absorption of UV radiation. This is an important parameter when using non-woven fabric for blinds and shutters.
  • Non-woven textile based on a mixture a polymer selected from the group consisting of PLA, or aliphatic-aromatic copolyesters and viscose has very good flexibility and high tear strength in the longitudinal direction (150.0 to 300.0 N (min.), the 3,0 - 5.0% elongation at break), transverse (100.0 to 170.0 N (min.), at 5.0 - 8.0% elongation at break).
  • Non-woven textile based on a mixture: a polymer selected from the group consisting of PLA, or aliphatic-aromatic copolyesters, or a mixture of both polymers, linen and rayon, and has very good flexibility and high tear strength in the longitudinal direction (130.0 - 210.0 N (min .) at 5.0 - 8.0% elongation at break), transverse (70,0 - 100,0 N (min.) at 9.0 - 14.0% elongation at break), with a thickness of 0.55 mm - 0 , 75 mm, very good resistance to puncture and abrasion resistance.
  • Polymer fibers is recommended to use the aforementioned / in admixture with a length of between 80 to 150 mm (maximum permissible length of 180 mm to the overall share of 60% as an ingredient in a mixture) with a thickness in the range of 0.17 - 2.0 tex, bast fiber / flax length of between 80 mm - 170 mm (maximum permissible length of 180 mm to the overall share of 40% as a component in the mixture).
  • the shape of the individual fibers in the mixture is particularly preferred for the proper preparation of entangled network, creating a strong construction of the finished product.
  • a process for preparing non-woven fabric of the invention comprises weighing the appropriate amount of individual fibers, mixing thereof, the opening and loosening, and the introduction arrangement from the carding machine input tray, wherein the elementary preparing a fleece, wherein the fleece is longitudinally pre-formed so as to reach the stacker pattern.
  • Applications of such a solution that is non-parallel cross-stacker selection results in the final greater resistance to stretching and tearing smaller differences between the longitudinal and transverse.
  • Composer arrangement causes several layers of fleece elementary published by the carding machine to increase the weight of the product and change the orientation of the fibers in the fleece of the longitudinal to transverse.
  • the next step is to stretch the pile to the stretcher, which increases the productivity of the entire line to 200g/m2 basis weight and improves the appearance and uniformity of the fleece and the ratio of MD: CD, this ends the entangling step.
  • Wodnoigfowa technology allows you to get a very clean, uniform fabric, which is enough to be sterilized in order to be able to directly use it for example in medicine.
  • the production line comprising a mixture of textile flax fiber, viscose fiber and polymer used mechanical igfowarki upper and lower, causing coupling (splicing) of the fibers in the fleece a nonwoven fabric form, and increasing the mechanical strength of the fiber.
  • the final stage of the process is carried out by the impregnating fibers which causes impregnation of the nonwoven fabric with an aqueous solution of a polymer in order to further connect the fibers.
  • This is followed by squeezing the excess impregnating agent and nonwovens of squeeze rollers goes to the tumble dryer, wherein the drying takes place and the evaporation of water from the nonwoven fabric and crosslinking the polymer to bind the fibers.
  • a smoothing of the surface impregnation of the nonwoven is vinyl acetate.
  • Woven uninflaming agent after impregnation with the addition of vinyl acetate polymer may additionally contain 3 - 30% or 6-24% or 5 - 17% by weight of a flame retardant with the polymer of vinyl acetate.
  • stacker cross fleeces and the use of mechanical needling on both sides (top, bottom) significantly improves the physical properties of non-woven fabric such as tensile longitudinal, transverse, puncture, and an important parameter which is the uniformity of the product, compared to traditional solutions with the stacker parallel and application-sided needled fleece.
  • nonwovens in the packaging industry and decorative, medical or even clothing with an emphasis on disposability is commonly known while the specific features of the present invention which has delivered a mix of non-woven and created on its basis woven definitely improved performance in every respect previously manufactured products such as strength, flexibility, absorbency, 100% biodegradable.
  • Woven invention retains very good mechanical parameters - physical, where you were in the lead so far its only product is not biodegradable fiber that is not organic or organic with very low coefficients of resistance.
  • the use of polymer fibers in the nonwoven blend allows for permanent molding.
  • Non-woven fabric of the present invention also allows you to expand its range of organic products previously manufactured on the basis of materials not biodegradable. The invention is illustrated in the embodiments does not limit its scope of protection.
  • Relaxants devices - was prepared mixing a blend of polymer - a shorting viscose fiber in their composition PLA polymer representing 70% of the total weight of the finished product, with a fiber length of up to 180 mm and the weight of the viscose rayon in an amount of 30% and a fiber length of 180 mm. The thickness of the fibers was 0.17 tex. From the resulting mixture of fibers be laid on stacker cross formed fleece weighing 160 g/m2. Fleece amplified
  • nonwoven fabric was subjected to a bath in an aqueous solution of ethyl acetate to the additional fiber bonding, and uniepalniaczu
  • the finished product ow / textile blend in proportions therefore has the following
  • Relaxants devices - was prepared mixing a blend of polymer - a shorting viscose fiber in their composition poly (ethylene-co-butylene adipate) representing 30% of the total weight of the finished product, with a fiber length of up to 180 mm and the weight of the viscose rayon in an amount of 70% and a fiber length of 180 mm. The thickness of the fibers was 0.17 tex. From the resulting mixture of fibers be laid on stacker cross fleece formed a weight of 120 g/m2. Fleece amplified hydroentangling process.
  • nonwoven fabric was subjected to a bath in an aqueous solution of ethyl acetate to the additional fiber bonding, and uniepalniaczu (ammonium sulfamate), excess moisture was removed and the nonwoven fabric was subjected to heat treatment.
  • the finished product can be easily formed using extruders temperature.
  • the use of these compounds in proportions very positive effect on the use of non-woven fabric products such as biodegradable gowns, strokes, biodegradable, biodegradable cloths and hospitals to sterile dressings, cosmetic make-up remover and centers Spa / Wellness
  • the finished product o / w mixture of textile proportions therefore has the following characteristics: good longitudinal strength, abrasion resistance, neutral skin, purpose- allergenic, the possibility of use in medicine, 100% biodegradable, non-woven environmentally friendly, applicable as such material for the manufacture of bandages, wipes, cloths, protective clothing for wellness centers with a focus on environmentally-friendly products.
  • Relaxants devices - mixing a blend of a polymer prepared / linen / shorting viscose fiber in their composition poly (ethylene succinate-co-butylene) representing 20% of the total weight of the finished product, with a fiber length of up to 150 mm weight of the product in an amount of flax fibers 35% of the impurity content of 5% and a fiber length of 180 mm, a thickness of 2.00 tex fiber, and viscose rayon in an amount of 45%.
  • Flax fibers have previously been properly prepared in the process of carding and combing. From the resulting mixture of fibers be laid on stacker cross formed fleece weighing 80 g/m2. The nonwoven fleece strengthened mechanical punching process, and a top side of the bottom side. Subsequently nonwoven fabric was subjected to a bath in an aqueous solution of ethyl acetate to the additional fiber bonding, excess moisture was removed and the nonwoven fabric was subjected to heat treatment.
  • Relaxants devices - mixing a blend of a polymer prepared / linen / shorting viscose fiber in their composition poly (adipate-co-terephthalate), which is 50% of the total weight of the finished product, with a fiber length of up to 150 mm weight of the product, flax fiber amount of 20% of the impurity content of 4% and a fiber length of 180 mm, a thickness of 2.00 tex fiber, and viscose rayon in an amount of 30%. Flax fibers have previously been properly prepared in the process of carding and combing. From the resulting mixture of fibers be laid on stacker cross formed fleece weighing 170 g/m2. The nonwoven fleece strengthened mechanical punching process, and a top side of the bottom side.
  • nonwoven fabric was subjected to a bath in an aqueous solution of ethyl acetate in an amount of 20%, with the addition of flame retardant (ammonium sulfamate) to further connect the fibers, the excess moisture was removed and the nonwoven fabric was subjected to heat treatment.
  • flame retardant ammonium sulfamate
  • the finished product ow / textile blend in proportions therefore has the following features: a large longitudinal tear strength min.l30N, UV reflectance at minimum UPF 20 through uniepalnariau a high coefficient of non-flammability of the finished product, a 100% biodegradable, for example used as the material for roller shutters, blinds.
  • Relaxants devices - mixing a blend of a polymer prepared / linen / shorting viscose fiber in their composition PLA (80%) and fibers of poly (ethylene-co-butylene adipate) (20%), accounting for 65% of the total weight of the finished product, with a fiber length 180 mm of the weight of the product, the thickness of 1.75 tex fiber, flax fiber in an amount of 15% of the impurity content of 5% and a fiber length of 180 mm, a thickness of 2.00 tex fiber and viscose rayon in an amount of 20%. Flax fibers have previously been properly prepared in the process of carding and combing. From the resulting mixture of fibers be laid on stacker cross formed fleece weighing 110 g/m2.
  • the nonwoven fleece strengthened mechanical punching process, and a top side of the bottom side. Subsequently nonwoven fabric was subjected to a bath in an aqueous solution of ethyl acetate in an amount of 20%, with the addition of flame retardant (ammonium sulfamate), to further bind the fibers, and the excess moisture was removed and the nonwoven fabric was subjected to heat treatment.
  • flame retardant ammonium sulfamate
  • the finished product ow / textile blend in proportions therefore has the following characteristics: high resistance to tearing min.l80N longitudinal, transverse min.l30N, 100% biodegradable, harmless to the environment, for example used in the manufacture of bags and wrappings 100% biodegradable and reusable.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

This invention relates to biodegradable non-woven fabric, preferably nonwoven flat combustible or noncombustible, a method for its preparation and use. Textile blend, which is made of non-woven fabric composed of viscose fibers and polymeric fibers selected from the group consisting of aliphatic copolyesters - aromatic or PLA, or a mixture thereof, may additionally comprise flax fibers. Obtained from the biodegradable nonwoven textile blend is used in the agro industry, packaging industry, decorative and home

Description

BIODEGRADABLE, COMBUSTIBLE OR NONCOMBUSTIBLE NONWOVEN, PROCESS OF MANUFACTURE AND USE
The present invention is a biodegradable non-woven fabric or a non-flammable combustible, its preparation method and application. Textile blend, which is made of non-woven fabric composed of viscose fibers and polymeric fibers selected from the group consisting of aliphatic copolyesters - aromatic or PLA, or a mixture thereof, may additionally comprise flax fibers. Obtained from the biodegradable nonwoven textile blend is used in the agro industry, packaging industry, decorative and home.
Biodegradable plastics are a new generation of materials on the market, like a plastic and conventional polymers may be used in different applications, depending on the requirements of the market. Replacing plastic biodegradable polymers is a response to the growing problem of environmental pollution spent product waste, lack of space for their storage and a long period of decay. Added to this are problems with the recycling processes of mechanical and chemical related to segregation and waste treatment. In addition, these processes require large amounts of thermal energy. Furthermore, the polymers can not physically be recycled repeatedly. The solution is not the disposal of plastic waste energy recovery in the combustion process, because not all materials can be burned without negative impact on the environment.
Thanks to its unique properties, biodegradable plastics can be composted. This natural organic recycling process characterized by a negligible energy consumption and does not generate environmentally harmful pollutants. In the process of biological treatment of biodegradable polymers and mineralization disintegrate under the influence of environmental factors (such as temperature, humidity), and micro-organisms (bacteria, fungi). Degradation products are carbon dioxide, methane, water and biomass. Production materials combine the properties of conventional thermoplastics and biodegradability fits perfectly into the meaning of the term sustainable development. Moreover, the use of these polymers for the production of renewable raw materials of plant origin has a positive impact on reducing greenhouse gas emissions and harmful pollutants that arise during the processing of fossil fuels.
Despite the implementation of the production of new biodegradable plastics, the market still lacks a material that could replace conventional plastics in a wide range of applicability.
Currently, over seventy distinguished by the types of biodegradable polymers, of which the major part are based on the raw material plant. The main barriers to the development of the No products more universal tends to seek better technical solutions that enable their wider use.
Although many existing solutions for the textile composition there is a continuing need to provide an improved textile mixture which ensures a fully biodegradable nonwoven fabric, and having high tear strength in the longitudinal and transverse directions, a very good elasticity, flexibility, puncture resistance and abrasion resistance.
The prior art (P386635) is known textile composite made from blends of viscose fiber, flax fiber and biodegradable thermoplastic resin. A composite comprising a mixture of textile fibers and viscose tykowo-biodegradable thermoplastic resin characterized in that the bast fibers with a fiber viscose blends comprise 60 to 90% viscose fiber and are contained in an amount of 10 - 40%, wherein the fiber mixture obtained in the process carding and / or combing the purity of bast fibers is contained in a range of 0 - 6% of impurities, the thinness of the fiber is contained in the range of 0.17 - 2.70 tex, and the fiber length within the range from 10 to 180 mm, wherein the predetermined length of the fiber are contained in specified proportions relative to each other, and that viscose fiber is 30 - 60% shorter than the average length of the bast fibers, and the percentage of the resin is 10 - 25% in the composite. The present invention also provides a process for producing composite and its application.
Because of P 391920 a biodegradable non-woven fabric is known for use in the agricultural arena, comprising fibers formed of several layers of fleece with a single waste materials, recycled and re-natural origin, preferably such as cotton, wool, linen, hemp, jute, sisal, coconut and artificial casein and cellulose fibers, of a weight of from 5 to 50g/m2, is dispensed into the interior portion of plant materials in the form of a dried particulate product rich in nitrogen compounds is further consolidated mechanically by needling needles przepychajqcymi all layers, then the non-woven fabric is obtained having a mass surface from 100 to 500g/m2. The fabric is composed with from 25% to 75% by weight in proportion to the fibrous mass of dried particulate product rich in nitrogen compounds.
Woven known from P 334 932 consists of a middle layer, which is a fleece band containing 50% of flax fibers and 50% polypropylene fibers, which is the middle layer on both sides of a fleece band of varying basis weight and containing from 70% to 75% of polypropylene fibers and from 25% to 30% polyester fibers. The needling teaming fleece band is in any case start only on the outer surface of one of the outer layers of nonwoven fabric. A method for producing non- woven consists in applying to the band constituting the outer layer of fleece backing fleece band, and a middle layer constituting the teaming needled fleece these two bands entangling of the outer layer from the backing. When applied to the fleece band center layer outer layer constituting the cap followed by needling on both sides, connecting the outer nonwoven layer of non-woven fabric to the middle layer.
The aim of the invention is to provide an improved textile mixture which ensures a fully biodegradable nonwoven fabric, and having high tear strength in the longitudinal and transverse directions, a very good elasticity, flexibility, puncture resistance and abrasion resistance. Simultaneously, the invention aims to provide a nonwoven fabric with improved properties and improved adhesion of the hydrophilic medium and under conditions of high humidity.
The aim of the invention is to provide a fully biodegradable nonwoven flat combustible or noncombustible, which allows for optimal use of the characteristics of individual fibers and achieve improved physical and chemical properties than those currently available on the market of biodegradable nonwovens.
The aim of the invention is to provide a nonwoven material which, because of its excellent strength parameters will not replace the biodegradable nonwoven fabrics currently used in space due to the high physical and chemical resistance, the nonwoven fabric completely biodegradable.
Such objectives and solution of technical problems defined above were implemented in the present invention.
The present invention is combustible or biodegradable nonwoven fabric of a blend of non- combustible fiber containing viscose textile and polymer fibers, characterized in that the polymer fibers are selected from aliphatic-aromatic copolyesters or PLA or their mixtures and are 80% -20% of the total weight of the product, while the viscose fibers constitute 20% -80% of the total weight of the product, wherein the length of the polymer fibers and viscose fibers, the length is contained in the mixture in the range of 80 to 180 mm, and the thickness of the fibers is 0.17 - 2.0 tex.
The use of the relative proportions of the various textile fibers in the mixture allows the use of a variety of non-woven fabric, especially where the main indicator of the biodegradability and high strength simultaneously. Preferably, the nonwoven fabric further comprises a bast fiber. More preferably, the bast fibers are flax fibers.
Preferably, the bast fiber of 15% - 35% of the total weight of the polymer fiber of 65% - 20% of the total weight of the product, and viscose rayon is 20% - 65% of the total weight of the product.
Preferably, the nonwoven fabric comprises 35% of bast fibers and 25-35% polymer fibers and 40-30% of viscose fibers.
Using the finished non-woven for the production of filters, shutters and is recommended to use the mixture, a maximum size limit, ie bast fiber amount and 35% of the polymer fiber in the range of 25 - 35% and balance the total weight of the viscose fiber.
Preferably, the aliphatic-aromatic copolyesters are selected from the group consisting of poly (ethylene-co-butylene adipate), poly (ethylene-co-butylene succinate), poly (adipate-co- terephthalate), poly (adipate-co-propylene terephthalate) , poly (sebacate-co-butylene terephthalate).
Preferably, the length of the polymer fibers and viscose fibers, the length is 80-150 mm.
Preferably, the length of bast fibers is 80 -180 mm.
Preferably, the length of bast fibers is 80-170 mm.
The length of each fiber is dictated by the developed technology of manufacturing the finished product and is reflected in the strength of the resulting nonwoven.
Preferably, the degree of contamination of flax fibers does not exceed 5%. This percentage of contaminants in the process of combing / grzeblenia influences the strength of the fibers of the finished product and the appearance of the finished product such as blinds. Preferably, the biodegradable non-woven fabric further comprises a thermoplastic resin in an amount of 3 - 35% in the finished product. More preferably, the biodegradable thermoplastic resin is 3-5% by weight of the finished product.
Use in the last stage of the production of the resin allows you to give a uniform appearance to the finished article, and increase resistance to puncture.
Preferably, the screen printing technique using zadrukach nonwoven contains up to 35% of the total weight of the polymer fiber.
Preferably, the nonwoven contains flame retardants in an amount of 3-30% or 6-24% or 5- 17%.
Using fabric for blinds in public spaces is recommended to use a blend of polymer / linen / viscose with uninflaming agents to enhance fire safety.
Another object of the invention is a process for producing nonwovens according to the invention, as defined above, characterized in that it comprises weighing out, the alignment of blended fiber carding and introduction of the input tray, wherein the fleeces are produced elementary wherein the fleece is longitudinally pre-formed and then hit the cross stacker in a next step extending fleece, fleece and then amplified by a needling process, and then introduced into a non-woven polymer bath containing impregnating agent is squeezed out excess impregnating agent, and so the resulting nonwoven fabric is dried.
Preferably, the step is carried out needling needling bilateral - top and bottom.
Preferably, a water needl
Preferably, the impregnating agent is an aqueous solution of a polymer, preferably vinyl acetate. Another object of the invention is the use of the nonwoven fabric of the invention as defined above for the manufacture of decorative articles, packaging, blinds, shutters, medical supplies.
The use of flax fiber and viscose was dictated by improving parameters: increase adhesion and improving the hydrophilic properties under conditions of medium and high humidity.
Nonwoven fabric made of pure polymer had the important parameters of the corresponding level, while the polymer fibers have led to increased flexibility and strength of the product and tear to draw the finished nonwovens.
The proportion of polymer relative to the use of the fiber viscose fiber at a constant weight of the final product allows to control water absorption, which is an important parameter when used in the printing industry and the medical and agrarian.
Adding flax to the mix can also increase reflectance and absorption of UV radiation. This is an important parameter when using non-woven fabric for blinds and shutters.
Using Transfer the finished product application is recommended to use the maximum amount of the mixture, the quantitative polymer fibers so that the fabric is ready for a more stable and reduces to a minimum the risk of displacement during the printing of each color, and the contrast of the application is high.
Non-woven textile based on a mixture: a polymer selected from the group consisting of PLA, or aliphatic-aromatic copolyesters and viscose has very good flexibility and high tear strength in the longitudinal direction (150.0 to 300.0 N (min.), the 3,0 - 5.0% elongation at break), transverse (100.0 to 170.0 N (min.), at 5.0 - 8.0% elongation at break).
Non-woven textile based on a mixture: a polymer selected from the group consisting of PLA, or aliphatic-aromatic copolyesters, or a mixture of both polymers, linen and rayon, and has very good flexibility and high tear strength in the longitudinal direction (130.0 - 210.0 N (min .) at 5.0 - 8.0% elongation at break), transverse (70,0 - 100,0 N (min.) at 9.0 - 14.0% elongation at break), with a thickness of 0.55 mm - 0 , 75 mm, very good resistance to puncture and abrasion resistance.
Polymer fibers is recommended to use the aforementioned / in admixture with a length of between 80 to 150 mm (maximum permissible length of 180 mm to the overall share of 60% as an ingredient in a mixture) with a thickness in the range of 0.17 - 2.0 tex, bast fiber / flax length of between 80 mm - 170 mm (maximum permissible length of 180 mm to the overall share of 40% as a component in the mixture).
Thanks to the particular composition of the fibers in the nonwoven fabric of the invention the shape of the individual fibers in the mixture is particularly preferred for the proper preparation of entangled network, creating a strong construction of the finished product.
Achieving these parameters far exceeds the currently manufactured fibers, and simultaneously applied to the production of non-woven biodegradable material does not pose a threat to the environment.
A process for preparing non-woven fabric of the invention comprises weighing the appropriate amount of individual fibers, mixing thereof, the opening and loosening, and the introduction arrangement from the carding machine input tray, wherein the elementary preparing a fleece, wherein the fleece is longitudinally pre-formed so as to reach the stacker pattern. Applications of such a solution that is non-parallel cross-stacker selection results in the final greater resistance to stretching and tearing smaller differences between the longitudinal and transverse. Composer arrangement causes several layers of fleece elementary published by the carding machine to increase the weight of the product and change the orientation of the fibers in the fleece of the longitudinal to transverse.
The next step is to stretch the pile to the stretcher, which increases the productivity of the entire line to 200g/m2 basis weight and improves the appearance and uniformity of the fleece and the ratio of MD: CD, this ends the entangling step.
In the case of a mixture consisting of viscose fibers and polymer fibers used hydroentangling. In this technology, a combination of fibers to entangle the fibers with each other takes place by transporting loose nonwoven fleece, wherein the conveyor strip are equipped with a so- called water in the form of needle holes 40 on the section of 1 inch, through which a pressure of approximately 250 bar to form streams of water flow so-called. Water needles. Targeted needle hit the water relaxed fleece and a gentle manner to the structure of the fibers become entangled them among themselves. Large part of the needles of water reflects its stream of carrier re-creating the opportunity to actively participate in forming the nonwoven fibers zaplqtywaniu. Wodnoigfowa technology allows you to get a very clean, uniform fabric, which is enough to be sterilized in order to be able to directly use it for example in medicine. In the production line comprising a mixture of textile flax fiber, viscose fiber and polymer used mechanical igfowarki upper and lower, causing coupling (splicing) of the fibers in the fleece a nonwoven fabric form, and increasing the mechanical strength of the fiber.
The final stage of the process is carried out by the impregnating fibers which causes impregnation of the nonwoven fabric with an aqueous solution of a polymer in order to further connect the fibers. This is followed by squeezing the excess impregnating agent and nonwovens of squeeze rollers goes to the tumble dryer, wherein the drying takes place and the evaporation of water from the nonwoven fabric and crosslinking the polymer to bind the fibers. In addition, a smoothing of the surface impregnation of the nonwoven. One commonly used sealers aqueous biodegradable polymer is vinyl acetate.
Woven uninflaming agent after impregnation with the addition of vinyl acetate polymer may additionally contain 3 - 30% or 6-24% or 5 - 17% by weight of a flame retardant with the polymer of vinyl acetate.
It should be noted that the use of the stacker cross fleeces and the use of mechanical needling on both sides (top, bottom) significantly improves the physical properties of non-woven fabric such as tensile longitudinal, transverse, puncture, and an important parameter which is the uniformity of the product, compared to traditional solutions with the stacker parallel and application-sided needled fleece.
The use of nonwovens in the packaging industry and decorative, medical or even clothing with an emphasis on disposability is commonly known while the specific features of the present invention which has delivered a mix of non-woven and created on its basis woven definitely improved performance in every respect previously manufactured products such as strength, flexibility, absorbency, 100% biodegradable. Woven invention retains very good mechanical parameters - physical, where you were in the lead so far its only product is not biodegradable fiber that is not organic or organic with very low coefficients of resistance. In contrast, the use of polymer fibers in the nonwoven blend allows for permanent molding. Non-woven fabric of the present invention also allows you to expand its range of organic products previously manufactured on the basis of materials not biodegradable. The invention is illustrated in the embodiments does not limit its scope of protection.
Example 1
Polymer blend textile fibers / viscose
Relaxants devices - was prepared mixing a blend of polymer - a shorting viscose fiber in their composition PLA polymer representing 70% of the total weight of the finished product, with a fiber length of up to 180 mm and the weight of the viscose rayon in an amount of 30% and a fiber length of 180 mm. The thickness of the fibers was 0.17 tex. From the resulting mixture of fibers be laid on stacker cross formed fleece weighing 160 g/m2. Fleece amplified
hydroentangling process. Subsequently nonwoven fabric was subjected to a bath in an aqueous solution of ethyl acetate to the additional fiber bonding, and uniepalniaczu
(ammonium sulfamate), excess moisture was removed and the nonwoven fabric was subjected to heat treatment.
The use of these compounds in proportions very positive effect on its use as a carrier for digital printing, where the important parameter is the flexibility, stability and homogeneity of the parameter taking into account the non-woven 100% biodegradable, and also a very good liquid absorptivity with respect to the coefficient of technological requirements set by the most printers for printing bulky, in printing and packaging industry and decorative.
Such a division of the percentage of the overall product of individual components of the fiber contributes to the achievement of very good strength, ie to 230.0 N (low) longitudinal, which is very highly classified finished product.
The finished product ow / textile blend in proportions therefore has the following
characteristics: high longitudinal strength at break of 230 N; widely used in the printing industry, thanks to uniepalnieniu big factor flammability of finished product to the class B; 100% biodegradable.
Example 2
Polymer blend textile fibers / viscose
Relaxants devices - was prepared mixing a blend of polymer - a shorting viscose fiber in their composition poly (ethylene-co-butylene adipate) representing 30% of the total weight of the finished product, with a fiber length of up to 180 mm and the weight of the viscose rayon in an amount of 70% and a fiber length of 180 mm. The thickness of the fibers was 0.17 tex. From the resulting mixture of fibers be laid on stacker cross fleece formed a weight of 120 g/m2. Fleece amplified hydroentangling process. Subsequently nonwoven fabric was subjected to a bath in an aqueous solution of ethyl acetate to the additional fiber bonding, and uniepalniaczu (ammonium sulfamate), excess moisture was removed and the nonwoven fabric was subjected to heat treatment. The finished product can be easily formed using extruders temperature. The use of these compounds in proportions very positive effect on the use of non-woven fabric products such as biodegradable gowns, strokes, biodegradable, biodegradable cloths and hospitals to sterile dressings, cosmetic make-up remover and centers Spa / Wellness
(protective parts of the body, the material-neutral human skin is also possible to use by people with allergies). Wherever the most important parameter is the absorption of water and neutral to the skin.
The finished product o / w mixture of textile proportions therefore has the following characteristics: good longitudinal strength, abrasion resistance, neutral skin, purpose- allergenic, the possibility of use in medicine, 100% biodegradable, non-woven environmentally friendly, applicable as such material for the manufacture of bandages, wipes, cloths, protective clothing for wellness centers with a focus on environmentally-friendly products.
Example 3
Polymer blend textile / linen / viscose
Relaxants devices - mixing a blend of a polymer prepared / linen / shorting viscose fiber in their composition poly (ethylene succinate-co-butylene) representing 20% of the total weight of the finished product, with a fiber length of up to 150 mm weight of the product in an amount of flax fibers 35% of the impurity content of 5% and a fiber length of 180 mm, a thickness of 2.00 tex fiber, and viscose rayon in an amount of 45%. Flax fibers have previously been properly prepared in the process of carding and combing. From the resulting mixture of fibers be laid on stacker cross formed fleece weighing 80 g/m2. The nonwoven fleece strengthened mechanical punching process, and a top side of the bottom side. Subsequently nonwoven fabric was subjected to a bath in an aqueous solution of ethyl acetate to the additional fiber bonding, excess moisture was removed and the nonwoven fabric was subjected to heat treatment.
The use of these compounds in proportions very positive effect on the use of non-woven agralnej product as a protection against excess the weathering.
Such a division of the percentage of the overall product of individual components of the fiber contributes to the achievement of very good biodegradability characteristics over time and lowering production costs, which is important for this type of applications.
Example 4
Polymer blend textile / linen / viscose
Relaxants devices - mixing a blend of a polymer prepared / linen / shorting viscose fiber in their composition poly (adipate-co-terephthalate), which is 50% of the total weight of the finished product, with a fiber length of up to 150 mm weight of the product, flax fiber amount of 20% of the impurity content of 4% and a fiber length of 180 mm, a thickness of 2.00 tex fiber, and viscose rayon in an amount of 30%. Flax fibers have previously been properly prepared in the process of carding and combing. From the resulting mixture of fibers be laid on stacker cross formed fleece weighing 170 g/m2. The nonwoven fleece strengthened mechanical punching process, and a top side of the bottom side. Subsequently nonwoven fabric was subjected to a bath in an aqueous solution of ethyl acetate in an amount of 20%, with the addition of flame retardant (ammonium sulfamate) to further connect the fibers, the excess moisture was removed and the nonwoven fabric was subjected to heat treatment.
The use of these compounds in proportions very positive effect on the use of non- woven fabric blinds, where the important parameter to be applied is high flexibility, and longitudinal strength. The finished product ow / textile blend in proportions therefore has the following features: a large longitudinal tear strength min.l30N, UV reflectance at minimum UPF 20 through uniepalnieniu a high coefficient of non-flammability of the finished product, a 100% biodegradable, for example used as the material for roller shutters, blinds.
Example 5
Polymer blend textile / linen / viscose
Relaxants devices - mixing a blend of a polymer prepared / linen / shorting viscose fiber in their composition PLA (80%) and fibers of poly (ethylene-co-butylene adipate) (20%), accounting for 65% of the total weight of the finished product, with a fiber length 180 mm of the weight of the product, the thickness of 1.75 tex fiber, flax fiber in an amount of 15% of the impurity content of 5% and a fiber length of 180 mm, a thickness of 2.00 tex fiber and viscose rayon in an amount of 20%. Flax fibers have previously been properly prepared in the process of carding and combing. From the resulting mixture of fibers be laid on stacker cross formed fleece weighing 110 g/m2. The nonwoven fleece strengthened mechanical punching process, and a top side of the bottom side. Subsequently nonwoven fabric was subjected to a bath in an aqueous solution of ethyl acetate in an amount of 20%, with the addition of flame retardant (ammonium sulfamate), to further bind the fibers, and the excess moisture was removed and the nonwoven fabric was subjected to heat treatment.
The use of these compounds in proportions very positive effect on the use of non- woven fabric blinds, where the important parameter to be applied is high flexibility, and longitudinal strength. The finished product ow / textile blend in proportions therefore has the following characteristics: high resistance to tearing min.l80N longitudinal, transverse min.l30N, 100% biodegradable, harmless to the environment, for example used in the manufacture of bags and wrappings 100% biodegradable and reusable.

Claims

1. Biodegradable combustible or noncombustible nonwoven consisting of a blend of viscose fiber containing textile and polymer fibers characterized in that the polymer fibers are selected from aliphatic-aromatic copoiyesters or PLA or their mixtures and are 80% -20% of the total weight of the product, while the viscose fibers constitute 20 % -80% of the total weight of the product, wherein the length of the polymer fibers and viscose fibers, the length is contained in the mixture in the range of 80 to 180 mm, and the thickness of the fibers is 0.17 - 2.0 tex.
2. The biodegradable nonwoven web of claim. 1, characterized in that it further comprises a bast fiber.
3. The biodegradable nonwoven web of claim. 2, characterized in that the bast fibers are flax fibers.
4. The biodegradable nonwoven web of claim. 2, characterized in that the bast fiber of 15% - 35% of the total weight of the polymer fiber of 65% - 20% of the total weight of the product, viscose rayon is 20% - 65% of the total weight of the product.
5. The biodegradable nonwoven web of claim. 2, characterized in that it comprises 35% bast fibers and polymer fibers, 25-35% and 40-30% of viscose fibers.
6. The biodegradable nonwoven web of claim. 1, characterized in that the
aliphatic-aromatic copoiyesters are selected from the group consisting of poly (ethylene-co-butylene adipate), poly (ethylene-co-butylene succinate), poly (adipate-co-terephthalate), poly (adipate-co propylene terephthalate), poly (sebacate-co-butylene terephthalate).
7. The biodegradable nonwoven web of claim. 1, characterized in that the length of the polymer fibers and viscose fibers, the length is 80-150 mm.
8. The biodegradable nonwoven web of claim. 2, characterized in that the bast fiber length is 80 -180 mm.
9. The biodegradable nonwoven web of claim. 8, characterized in that the bast fiber length is 80-170 mm.
10. The biodegradable nonwoven web of claim. 2, characterized in that the
impurities in the fiber tykowym not exceed 5%.
11. The biodegradable nonwoven web of claim. 1 or 2, characterized in that it further comprises a biodegradable thermoplastic resin in an amount of 3 - 35% in the finished product.
12. The biodegradable nonwoven web of claim. 11, characterized in that the
biodegradable thermoplastic resin is 3-5% by weight of the finished product.
13. The biodegradable nonwoven web of claim. 1 or 2, characterized in that the screen printing technique using zadrukach contains up to 35% of the total weight of the polymer fiber.
14. The biodegradable nonwoven web of claim. 1 or 2, characterized in that it comprises flame retardants in an amount of 3-30% or 6-24% or 5-17%.
15. A process for preparing a biodegradable nonwoven fabric or a non-combustible firearm as defined in any of claims 1-14, characterized in that it comprises weighing out, the alignment of blended fiber carding and introduction of the input tray, wherein the fleeces are produced wherein the elementary fleeces are pre-formed longitudinally, then get on the stacker cross, in a further step extending fleece, fleece and then amplified by a needling process, after which the nonwoven fabric is introduced into a polymer bath containing impregnating agent is squeezed out excess impregnating agent, and so the resulting nonwoven fabric is dried.
16. A method according to claim. 15, characterized in that the needling step is carried out double-sided needling - top and bottom.
17. A method according to claim. 15, characterized in that the hydroentangling performed.
18. A method according to claim. 15, characterized in that the impregnating agent is an aqueous solution of a polymer, preferably vinyl acetate.
19. The use of combustible or biodegradable nonwoven fabric obtained from a mixture of non-combustible textile as defined in any of claims 1-14 for the manufacture of decorative articles, packaging, blinds, shutters, medical supplies.
PCT/PL2014/000070 2013-07-01 2014-06-30 Biodegradable, combustible or noncombustible nonwoven, process of manufacture and use WO2015002555A1 (en)

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