Hydroformed composite nonwoven material

FIELD: metallurgy.

SUBSTANCE: present invention discloses composite nonwoven sheet material making method, involving continuous fibres extrusion from drawing-block, drawing fibres through slit drawing unit into thin continuous fibres, forming of web from loose continuous fibres without thermal connections during fibers laying, web spunlacing, including continuous spun fibres together with short fibers molded by wet or foam method, including natural and/or synthetic fibres or spun fibres, for integration and mechanical connection and forming of thermally unbound composite nonwoven sheet material, wherein creating wet environment during molding and stacking of continuous fibres on stages of fibres laying on already moistened surface, maintaining width of slit drawing unit outlet, opened for more than 65 mm, and liquid is added at slit drawing unit outlet.

EFFECT: production of material.

17 cl, 1 dwg

 



 

Same patents:

FIELD: process engineering.

SUBSTANCE: invention relates to nonwoven filtration materials. Proposed linen comprises bimodal (mass fraction/size) mix of continuous interwoven microfibers and larger fibers of identical polymer composition. Note here that amount of microfibers exceeds that of larger fibers by, at least, five times. Note also that fibers mass fraction-to-size bar graph features the mode of larger fibers exceeding 10 mcm. Said linen can be produced by passing fiber-making material through die chamber with larger and smaller orifices to produce threads, thinning said threads into fibers and collecting thinned fibers to make said nonwoven linen.

EFFECT: linen for producing self-supporting 3-D articles, say, cup-shaped respirators and corrugated air filters.

15 cl, 17 dwg, 22 tbl, 10 ex

FIELD: textile.

SUBSTANCE: invention relates to textile industry and is designed to manufacture non-woven materials for production of disposable or short-term protective garment for specific conditions, for example, for employees of Ministry of Emergency Situation services in extreme situations. Method of non-woven material production for manufacturing protective garment with biocidal properties includes fibres modification with nano-dimensional silver particles introduced in fibre as a part of water dispersion sprayed during fibres loosening before rippling. Scrim is then formed consisting of nano-modified fibres and subject to needling and further thermal processing under high temperature in calendar.

EFFECT: improvement of protection properties in non-woven materials and simultaneous reduction of process operations by combining nano-modification of fibres with anti-static treatment.

14 cl, 4 ex

FIELD: polymers.

SUBSTANCE: invention relates to technology for making molded articles made of biologically decomposing polymers. The composition for molding comprises biologically decomposing polymer and material preparing from marine plants and/or shells of marine animals, or at least two components taken among group consisting of saccharides and their derivatives, proteins, amino acids, vitamins and metal ions. The composition elicits good stability and ability for processing. Articles made of this composition show low capacity to fibrillation. Invention can be used in manufacturing package materials or fibrous materials - yarn, nonwoven or textile articles.

EFFECT: improved method for making, valuable properties of articles.

15 cl, 18 tbl, 3 dwg, 16 ex

The invention relates to a nonwoven composite materials, characterized by an excellent combination of strength, softness, elasticity and absorbency

Non-woven material // 2190049
The invention relates to the manufacture of non-woven filtering material and can be used for the manufacture of filter elements rasoulallah installations

FIELD: polymers.

SUBSTANCE: invention relates to technology for making molded articles made of biologically decomposing polymers. The composition for molding comprises biologically decomposing polymer and material preparing from marine plants and/or shells of marine animals, or at least two components taken among group consisting of saccharides and their derivatives, proteins, amino acids, vitamins and metal ions. The composition elicits good stability and ability for processing. Articles made of this composition show low capacity to fibrillation. Invention can be used in manufacturing package materials or fibrous materials - yarn, nonwoven or textile articles.

EFFECT: improved method for making, valuable properties of articles.

15 cl, 18 tbl, 3 dwg, 16 ex

FIELD: textile.

SUBSTANCE: invention relates to textile industry and is designed to manufacture non-woven materials for production of disposable or short-term protective garment for specific conditions, for example, for employees of Ministry of Emergency Situation services in extreme situations. Method of non-woven material production for manufacturing protective garment with biocidal properties includes fibres modification with nano-dimensional silver particles introduced in fibre as a part of water dispersion sprayed during fibres loosening before rippling. Scrim is then formed consisting of nano-modified fibres and subject to needling and further thermal processing under high temperature in calendar.

EFFECT: improvement of protection properties in non-woven materials and simultaneous reduction of process operations by combining nano-modification of fibres with anti-static treatment.

14 cl, 4 ex

FIELD: process engineering.

SUBSTANCE: invention relates to nonwoven filtration materials. Proposed linen comprises bimodal (mass fraction/size) mix of continuous interwoven microfibers and larger fibers of identical polymer composition. Note here that amount of microfibers exceeds that of larger fibers by, at least, five times. Note also that fibers mass fraction-to-size bar graph features the mode of larger fibers exceeding 10 mcm. Said linen can be produced by passing fiber-making material through die chamber with larger and smaller orifices to produce threads, thinning said threads into fibers and collecting thinned fibers to make said nonwoven linen.

EFFECT: linen for producing self-supporting 3-D articles, say, cup-shaped respirators and corrugated air filters.

15 cl, 17 dwg, 22 tbl, 10 ex

FIELD: construction.

SUBSTANCE: invention relates to product from glass fibre, which can be used for heat and sound insulation of roofs and walls in domestic and commercial buildings. Product from glass fibre contains binding composition, where binding composition before hardening contains phenol-formaldehyde resin and one or more modifiers, selected from group comprising copolymer containing one or several elementary links based on derivatives of vinyl aromatic compounds and at least one substance of maleic anhydride and maleic acid or adduct styrene, at least one substance of maleic anhydride and maleic acid and at least one substance from acrylic acid and acrylate, or any combination thereof. At that, product of glass fibre contains 3-45 wt% binding composition in terms of dry mass of product from glass fibre or binding composition contains phenol-formaldehyde resin in amount of 92-99.8 % by weight of phenol-formaldehyde resin and one or more modifiers. Described also is method of obtaining product of glass fibre.

EFFECT: technical result is improved tensile properties, including tensile strength of heated/wet sample and/or enhanced tensile strength of dry sample, as well as reducing amount or level of composition, which is applied on glass fibre, which is reflected in characteristically lower percentage during annealing of product from glass fibre.

20 cl, 6 dwg, 3 ex

FIELD: textile and paper.

SUBSTANCE: method of producing a nonwoven material by hydroentangling a fibre mixture containing spunlaid filaments, natural fibres and synthetic staple fibres, wherein a first fibrous web (12) of natural fibres and at least 10 wt% manmade staple fibres by fibre weight is wetlaid and hydroentangled in a first hydroentangling station (13), spunlaid filaments (16) are laid on top of hydroentangled first fibrous web (12) and a second fibrous web (19) comprising natural fibres is wetlaid on top of said spunlaid filaments (16). Second fibrous web (19) is hydroentangled together with spunlaid filaments (16) in a second hydroentangling station (20); combined webs are reversed and first fibrous web (12) of natural fibres and manmade staple fibre is hydroentagled together with spunlaid filaments (16) in third hydroentangling station (25).

EFFECT: disclosed is a method for production of nonwoven material.

10 cl, 2 dwg

FIELD: textile.

SUBSTANCE: method of producing non-woven material by water-jet binding of mixture of fibres containing spanlaid filaments, natural fibres and synthetic staple fibre, wherein fibrous web (13) containing natural fibres and at least 10 % of synthetic staple fibres by weight, is subjected to hydraulic web formation by formation on inclined screen; fibrous web prepared by hydraulic web formation undergoes hydro-entanglement at first station (14) of water-jet binding; and on top of said hydro-entangled fibrous web (13), obtained by hydraulic web formation, laying spunlaid filaments (18) to form a combined web (19).

EFFECT: combined web(19) is subjected to hydro-entanglement on second station (24) of water-jet binding.

10 cl, 1 dwg

FIELD: metallurgy.

SUBSTANCE: present invention discloses composite nonwoven sheet material making method, involving continuous fibres extrusion from drawing-block, drawing fibres through slit drawing unit into thin continuous fibres, forming of web from loose continuous fibres without thermal connections during fibers laying, web spunlacing, including continuous spun fibres together with short fibers molded by wet or foam method, including natural and/or synthetic fibres or spun fibres, for integration and mechanical connection and forming of thermally unbound composite nonwoven sheet material, wherein creating wet environment during molding and stacking of continuous fibres on stages of fibres laying on already moistened surface, maintaining width of slit drawing unit outlet, opened for more than 65 mm, and liquid is added at slit drawing unit outlet.

EFFECT: production of material.

17 cl, 1 dwg

FIELD: textile and paper.

SUBSTANCE: present invention relates to embossed composite nonwoven web material, containing a mixture of thermally unbonded continuous spunlaid filaments and short fibers including natural and/or synthetic fibers or staple fibers; continuous filaments and short fibers is being substantially mechanically bonded to each other by hydroentangling.

EFFECT: composite nonwoven web material is being embossed without thermobonds to have a strength index, equal to or more than 1 time the strength index of the unembossed composite nonwoven web material.

21 cl, 2 tbl, 1 dwg

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