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
  • D06N5/00—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
  • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
  • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
  • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
  • E04D5/10—Roof covering by making use of flexible material, e.g. supplied in roll form by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen

Definitions

• the invention relates to a flame-retardant carrier insert, which is particularly suitable as a carrier insert for the production of roofing sheets, roofing underlay or as a tarpaulin.
• Flame-retardant carrier inlays for the production of roofing membranes, roofing membranes or tarpaulins have to meet a wide range of requirements.
• sufficient mechanical stability is required, such as good perforation resistance and good tensile strength, for example to withstand the mechanical loads during further processing, such as bituminizing or laying, and on the other hand, a high resistance to thermal stress, for example when bituminizing or to radiant heat, and Resistance to flight fire is required.
• Fire resistant roofing and waterproofing membrane materials are known from German utility models G 9312821.5 and G 9403114.2, in which a reinforcing carrier material is equipped with a flame or fire protection material.
• the flame or fire protection materials are preferably fixed on the carrier material by means of an impregnation material, which means a dispersion binder and / or a bitumen. This procedure proves to be advantageous for carrier materials that are solidified by chemical binders such as polymer dispersion binders.
• the present invention relates to a flame-retardant carrier insert comprising at least one textile fabric and at least one powdered flame retardant material and / or powdery additive, characterized in that the flame retardant material and / or additive is made by means of a meltable polymer, the adhesive temperature of which is below the softening temperature of at least the supporting fibers of the textile The fabric is attached.
• textile fabric is to be understood in its broadest meaning within the scope of this description. These can be all structures made of fibers, in particular of synthesized polymers, which have been produced using a surface-forming technique. Examples of such structures are woven fabrics, knitted fabrics and preferably scrims, knitted fabrics and nonwovens.
• spunbonded fabrics which are produced by randomly depositing freshly melt-spun filaments are preferred. They consist of continuous synthetic fibers made of melt-spinnable polymer materials.
• Suitable polymer materials are, for example, polyamides, such as polyhexamethylene diadipamide, poly-caprolactam, aromatic or partially aromatic polyamides (“aramids”), partially aromatic or fully aromatic polyesters, polyphenylene sulfide (PPS), polymers with ether and keto groups, such as polyether ketones (PEK ) and polyether ether ketone (PEEK), or polybenzimidazoles.
• the spunbonded fabrics preferably consist of melt-spinnable polyesters.
• polyester material consist predominantly of building blocks that differ from aromatic dicarboxylic acids and from aliphatic ones Derive diols.
• Common aromatic dicarboxylic acid building blocks are the divalent residues of benzenedicarboxylic acids, especially terephthalic acid and isophthalic acid;
• Common diols have 2 to 4 carbon atoms, with the ethylene glycol being particularly suitable.
• Composites according to the invention are particularly advantageous, the nonwovens of which consist of a polyester material which consists of at least 85 mol% of polyethylene terephthalate.
• dicarboxylic acid units and glycol units which act as so-called modifying agents and which allow the person skilled in the art to specifically influence the physical and chemical properties of the filaments produced.
• dicarboxylic acid units are residues of isophthalic acid or of aliphatic dicarboxylic acid such as, for example, glutaric acid, adipic acid, sebacic acid;
• diol residues with a modifying action are those of longer-chain diols, for example of propanediol or butanedio, of di- or triethylene glycol or, if present in small amounts, of polyglycol with a molecular weight of approximately 500 to 2000.
• Polyesters which contain at least 95 mol% of polyethylene terephthalate are particularly preferred, in particular those made from unmodified polyethylene terephthalate.
• the polyesters contained in the nonwovens usually have a molecular weight corresponding to an intrinsic viscosity (IV) of 0.5 to 1.4 (dl / g), measured on solutions in dichloroacetic acid at 25 ° C.
• IV intrinsic viscosity
• the textile fabrics made of fibers made of synthetic polymers for producing the carrier insert according to the invention have customary weights per unit area of 20 to 2000 g / m 2 , preferably 50 to 400 g / m 2 .
• the nonwovens are mechanically consolidated, for example by needling and / or chemically, for example by melt binders, which are preferably introduced in fiber form.
• the textile fabric made of fibers made of synthetic polymers can also be a melt-bond-strengthened nonwoven fabric which contains carrier and binding fibers.
• the carrier and binding fibers can be derived from any thermoplastic thread-forming polymer in accordance with the requirement profile of the user.
• the proportion of the two types of fibers to one another can be chosen within wide limits, it being important to ensure that the proportion of the binding fibers is chosen so high that the nonwoven fabric is given sufficient strength for the desired application by bonding the carrier fibers to the binding fibers.
• the proportion of the binder originating from the binding fiber in the nonwoven is usually less than 50% by weight, based on the weight of the nonwoven.
• Modified polyesters with a melting point which is lowered by 10 to 50 ° C., preferably 30 to 50 ° C., compared to the nonwoven raw material, are particularly suitable as melt binders.
• a binder are polypropylene, polybutylene terephthalate or by condensing longer-chain diols and / or polyethylene terephthalate modified by isophthalic acid or aliphatic dicarboxylic acids.
• the melt binders are preferably introduced into the nonwovens in the form of fibers, in particular in such a way that at least one surface - as a rule the surface to be equipped with the flame and / or fire protection materials - consists almost entirely of binding fibers, as described in EP-A-0530769 describes.
• the individual fiber titers of the carrier and binding fibers are usually 1 to 16 dtex., Preferably 2 to 6 dtex.
• the webs can be finally consolidated after mechanical consolidation by needling and / or by means of fluid jets, if necessary with the aid of a chemical binder, for example based on a polyacrylate.
• Carrier inserts which have a combination of preferred features are also particularly preferred.
• the filaments or staple fibers that make up the nonwovens can have a practically round cross section or can also have other shapes, such as dumbbell, kidney-shaped, triangular or tri or multilobal cross sections. Hollow fibers can also be used. Furthermore, the binding fiber can also be used in the form of bicomponent or multicomponent fibers.
• the filaments forming the spunbonded nonwoven can be modified by conventional additives, for example by antistatic agents such as carbon black.
• the flame or fire protection material is preferably applied in an amount of 10 to 120 g / m 2 , particularly preferably in an amount of 20 to 80 g / m 2, to the top of the textile fabric made of fibers made of synthetic polymers, the application of the flame - or Fire protection material before, at the same time or after the application of the meltable polymer, which acts as an adhesive, can take place. Flame or fire protection materials which are activated only above the usual temperatures of 180 ° C for bituminizing are particularly preferred.
• the additives used are preferably herbicides and / or fungicides which permanently prevent plant roots from penetrating the carrier insert. These additives are added in an amount determined by the subsequent use, usually between 0.0005 and 1 g / m 2 . Activated carbon is also possible as a further additive, so that the carrier insert according to the invention can also be used as a filter material.
• the meltable polymer has an adhesive temperature which is below the softening temperature of at least the supporting fibers of the textile fabric. If the textile fabric made of fibers made of synthetic polymers is a melt-bonded nonwoven, the softening temperatures of the meltable polymer and the binding fibers of the melt-bonded nonwoven can also be almost the same or even overlap.
• the meltable polymer can be applied in the form of powders, granules, staple fibers, continuous fibers, film or as a textile fabric.
• Suitable meltable polymers are thermoplastic polymers or resins.
• Suitable thermoplastic polymers are polyolefins such as polypropylene, polyethylene, polyamides and polybutylene terephthalate and modified polyethylene terephthalates - using aliphatic dicarboxylic acids or isophthalic acid.
• the meltable polymer is preferably made of fibers in an amount of 5 to 120 g / m 2 , particularly preferably in an amount of 10 to 40 g / m 2, on the upper side of the textile fabric synthetic polymers applied.
• the textile fabric made of fibers of synthetic polymers loaded with the flame retardant material and / or additive and the meltable polymer is treated by the action of heat and / or pressure up to the adhesive temperature of the meltable polymer, so that the flame retardant material and / or the additive is on the top of the textile Fabric made of fibers from synthetic polymers adheres.
• Fusible melamine-formaldehyde precondensates which can condense to thermosets are suitable as resins.
• the adhesive temperature is understood to be the temperature at which the meltable polymer wets the carrier insert and the flame retardant and / or the additive, so that there is sufficient adhesion of the flame retardant and / or the additive to the carrier insert and subsequent operations, such as winding or bituminizing, without detaching the flame retardant and / or additive.
• the flame-retardant carrier insert according to the invention can also contain reinforcing layers.
• These reinforcing layers are preferably woven, knitted, laid, knitted and nonwoven, in particular woven and laid, made of high-performance filaments, for example made of glass, carbon, aromatic amides and polyester, preferably glass, which before or after finishing with flame retardant material and / or additive can be applied in a known manner to the top and / or bottom of the textile fabric made of fibers made of synthetic polymers.
• the carrier insert can also contain a metal foil which is adhered to the carrier insert in a manner known per se or using the meltable polymer present.
• a metal foil increases the root strength of the carrier insert and thus protects underlying components.
• the metal foil is preferably a copper foil.
• the reinforcing layers are preferably arranged in the form of a fabric or scrim, the thread density being between 0.1 and 10 threads per cm.
• the flame-retardant carrier insert according to the invention can be used for the production of roofing, roofing and waterproofing membranes, which are predominantly bituminized. This is also an object of the present invention.
• the carrier insert is treated with bitumen in a manner known per se and then optionally sprinkled with a granular material, for example with sand.
• the roofing, roofing and waterproofing membranes produced in this way are characterized by good flame resistance.
• Improved processability of the flame-retardant carrier insert is achieved in a manner known per se if a part which corresponds to a seam or joint area of the finished roofing and sealing membrane material is left free from flame-retardant material and / or additive, since a connection can be created here without there is a risk of activation of the flame or fire protection material.
• a preferred form of formation of the textile surface according to measure a) is spunbond formation, particularly preferably by means of melt binder fibers, which are enriched in particular on at least one surface. It is equally preferred to combine the method according to the invention with the surface formation process or to interrupt the method after the surface formation process.
• the powdery, meltable polymer and the powdery flame retardant and / or additive can also be applied separately by means of a number of scattering chairs arranged one behind the other, the sequence of application being subject to no restriction.
• the flame retardant equipment and / or the additive is fixed by the action of heat in such a way that the fusible polymer wets the textile surface obtained according to a) and the fire retardant and / or additive and thus adequate adhesion between the according to a) obtained textile surface and the flame retardant and / or additive.
• the powdered flame retardant material can be applied or scattered on in a manner known per se by scattering in the electrostatic field.
• the textile fabric loaded with meltable polymer is negatively charged as a negative pole.
• a positive pole is arranged above the textile fabric.
• the flame retardant material is guided past the positive pole and is electrostatically charged. It is then strongly accelerated in the high-voltage field and evenly hurled onto the textile fabric (minus pole) provided with meltable polymer.
• the high speed and the negatively charged carrier insert result in a very adhesive and even spreading.
• the finished flame-retardant composite is then wound up in a manner known per se or bituminized in a manner known per se.
• the resulting fire-retardant carrier insert can be used directly on any conventional production line for roofing, roofing and waterproofing membranes without any changes and can be processed into a finished roofing, roofing and waterproofing membrane material according to the invention.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Laminated Bodies (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Nonwoven Fabrics (AREA)
• Graft Or Block Polymers (AREA)
• Fireproofing Substances (AREA)
• Artificial Filaments (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=7763549

Family Applications (1)

Country Status (5)

Cited By (4)

Families Citing this family (2)

Family Cites Families (7)

• 1995
  • 1995-06-02 DE DE19520314A patent/DE19520314C2/de not_active Expired - Fee Related
• 1996
  • 1996-05-07 EP EP96107131A patent/EP0745718B1/fr not_active Expired - Lifetime
  • 1996-05-07 AT AT96107131T patent/ATE212082T1/de not_active IP Right Cessation
  • 1996-05-07 DE DE59608576T patent/DE59608576D1/de not_active Expired - Lifetime
  • 1996-05-07 DK DK96107131T patent/DK0745718T3/da active
  • 1996-05-31 NO NO19962254A patent/NO313450B1/no not_active IP Right Cessation

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