EP0453968A2 - Casing sheet - Google Patents

Casing sheet Download PDF

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Publication number
EP0453968A2
EP0453968A2 EP91106267A EP91106267A EP0453968A2 EP 0453968 A2 EP0453968 A2 EP 0453968A2 EP 91106267 A EP91106267 A EP 91106267A EP 91106267 A EP91106267 A EP 91106267A EP 0453968 A2 EP0453968 A2 EP 0453968A2
Authority
EP
European Patent Office
Prior art keywords
filaments
formwork sheet
sheet according
formwork
nonwoven
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP91106267A
Other languages
German (de)
French (fr)
Other versions
EP0453968A3 (en
Inventor
Bertrand Claude Weiter
Franz Kaulich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Publication of EP0453968A2 publication Critical patent/EP0453968A2/en
Publication of EP0453968A3 publication Critical patent/EP0453968A3/en
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—Polyesters
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-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 yarns or filaments produced by welding
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-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 yarns or filaments produced by welding
    • D04H3/153—Mixed yarns or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-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
    • 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
    • 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
    • E04D5/02—Roof covering by making use of flexible material, e.g. supplied in roll form of materials impregnated with sealing substances, e.g. roofing felt
    • 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
    • D06N2203/08—Bituminous material, e.g. asphalt, tar, bitumen
    • 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
    • D06N2209/00—Properties of the materials
    • D06N2209/10—Properties of the materials having mechanical properties
    • D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
    • 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
    • D06N2209/00—Properties of the materials
    • D06N2209/10—Properties of the materials having mechanical properties
    • D06N2209/106—Roughness, anti-slip, abrasiveness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1023—Surface deformation only [e.g., embossing]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1039—Surface deformation only of sandwich or lamina [e.g., embossed panels]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/237—Noninterengaged fibered material encased [e.g., mat, batt, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y10T428/24405—Polymer or resin [e.g., natural or synthetic rubber, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y10T428/24421—Silicon containing
    • Y10T428/2443—Sand, clay, or crushed rock or slate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/27—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]

Definitions

  • the invention relates to a formwork sheet with improved slip resistance on the basis of a waterproof finished spunbonded fabric, a process for its production, and the use of the waterproofed spunbonded fabric as a formwork sheet.
  • the invention has for its object to provide a formwork sheet that does not require a fine fleece and that offers high slip resistance and thus a high level of safety. Furthermore, the invention provides a formwork sheet that can be produced in a simple manner, since the previous bitumen embossing step at the roofing sheet manufacturer is no longer necessary, since it is easy to install because low end surface weights can be worked and which is characterized by a high tear resistance and nail tear resistance. For example, nail pull-out strengths of 60 - 220 N (measured according to the UEATC test method) can be achieved.
  • the invention relates to a formwork sheet which essentially consists of a solidified spun-bonded nonwoven web made of filaments made of organic fiber-forming material and coated with an embossed weave pattern, the formwork sheet having a structure in the form of a weave pattern on at least one surface, preferably on one surface has to increase the slip resistance.
  • a “structure in the form of a weaving pattern” is to be understood as a structure that can also be found in fabrics. This structure is created by embossing during the production of the spunbonded fabric and is retained on the formwork sheet even after it has been coated with the coating agent.
  • Usual weaving patterns can be used, such as patterns in the form of the satin weave, in the form of the twill weave and in particular in the form of the plain weave.
  • the depth of this pattern in the formwork sheet that is to say the difference between the highest elevations and the deepest adjacent depressions, is selected so that there is a sufficient degree of slip resistance. Typical values for the depth of a weaving pattern are in the range from 0.05 to 0.3 mm.
  • the formwork sheet has a woven pattern in the form of a plain weave with a depth of about 0.2 mm.
  • All conventional organic compounds with which the spunbonded nonwoven can be made waterproof can be used as the coating agent.
  • These can be synthetic resins, such as polyethylene or polyvinyl chloride.
  • natural coating agents can also be used.
  • Bitumen is very particularly preferably used.
  • the spunbonded fabric can consist of any filaments made of organic fiber-forming material. Examples include polyethylene, polypropylene, polyamide and especially polyester. Mixtures of these types of filaments can also be used.
  • the filaments are deposited in a manner known per se as a fleece and then pre-consolidated mechanically or in particular thermomechanically, for example by calendering using a smooth calender or preferably using an embossing calender.
  • the woven pattern can be imprinted on the spunbond.
  • this pattern can also only be produced by a separate embossing step after the spunbonded web has solidified.
  • the final consolidation can be carried out, for example, using a binder.
  • All conventional agents are suitable as binders, such as polyacrylate dispersion, polyvinyl ester dispersion, polyvinyl alcohol, polyurethane dispersions or aminoplast or phenoplast precondensates. The proportion of such binders is usually 5-25% by weight. Binder fibers, which can be added during the production of the nonwoven, are particularly suitable.
  • spunbonded nonwovens based on polyester fibers in particular those which are bonded with a melt binder.
  • Typical values for the grammages of the spunbonded nonwovens to be used are in the range between 60 and 120 g / m2, preferably 80 to 100 g / m2.
  • the thickness of the spunbonded nonwovens to be used is usually between 0.20 and 0.50 mm, in particular between 0.30 and 0.40 mm.
  • spunbonded nonwovens made from load-bearing filaments made of polyester and from filament serving as melt binders made from polyester, the basis weight of the spunbonded fabric being between 60 and 100 g / m 2, the individual titer of the load-bearing filaments and binder filaments in Range is between 1 and 7 dtex and the proportion of binder filaments is up to 12% by weight.
  • the basis weight of such spunbonded fabrics is preferably between 60 and 90 g / m 2, the individual titer of the filaments is between 1 and 5 dtex, in particular 1 and 4 dtex, and the proportion of binder filaments is between 5 and 10 percent by weight.
  • the titer of the binder filaments is preferably chosen to be smaller than the titer of the supporting filaments.
  • the supporting filaments are preferably made of polyethylene terephthalate, while the melt binder consists of polymers whose melting point is below the melting point of the supporting filaments.
  • Melt binding fibers made from an isophthalic acid-modified polyester with a correspondingly lowered melting point are preferred.
  • the binder filaments preferably also consist of a flame-retardant modified raw material, in particular of isophthalic acid-modified polyesters or z.
  • Very particularly preferred spunbonded nonwovens of this type are characterized by binder filaments, the melting point of which is less than 30 ° C., preferably less than 20 ° C., below the melting point of the supporting filaments.
  • Formwork sheets made from these nonwovens can be (further) processed at high temperatures and are particularly heat-resistant.
  • spunbonded nonwovens made from load-bearing filaments made of polyester and from filaments serving as melt binders made from polyester are used, the binder filaments consisting of a modified polyethylene terephthalate which has flame-retardant properties.
  • the load-bearing filaments generally consist of unmodified polyesters, preferably of polyethylene terephthalate, and the binder filaments of flame-retardant polyesters, which preferably contain dicarboxylic acid and diol components and condensed P-containing chain links.
  • the weight per unit area of these spunbonded nonwovens is preferably above 60 g / m 2, and the single titer of the supporting filaments and binder filaments is particularly preferably in the range between 1 and 7 dtex.
  • the basis weight of these spunbonded nonwovens is preferably between 60 and 120 g / m 2, the individual titer of the filaments is between 1 and 10 dtex, in particular 1 and 5 dtex, and the proportion of binder filaments is between 5 and 20 percent by weight.
  • the titer of the binder filaments is preferably chosen to be smaller than the titer of the supporting filaments.
  • Modified polyethylene terephthalate as described, for example, is preferred as the melt binder.
  • B. is described in DE-PS 23 46 787, used with a correspondingly lowered melting point.
  • the melting point of the binder filaments in these preferred spunbonded nonwovens is 20 ° C., in particular 15 ° C., below the fixed point of the matrix filaments.
  • dicarboxylic acids preferably as co-components
  • dicarboxylic acid starting materials for polyesters of the spunbonded fabrics to be used according to the invention.
  • diol components come in addition to the preferred ethylene glycol z.
  • B 1,3-propanediol, 1,4-butanediol and the higher homologues of 1,4-butanediol, and also 2,2-dimethylpropanediol-1,3, 1,4-cyclohexanedimethanol etc., also as co-components in question.
  • a spunbonded nonwoven in which an antistatic such as e.g. B. carbon black has been introduced into the spunbond.
  • the spunbonded fabric is equipped on one or both sides with a coating agent, preferably with bitumen. This can be done by brushing the spunbonded fabric or by soaking the spunbonded fabric with the coating agent, optionally followed by stripping or squeezing off excess portions of the coating agent.
  • the proportion of the coating agent in the finished formwork sheet is usually about 140 to 280 g / m2.
  • the weight per unit area of the finished formwork sheet is generally about 200 to 400 g / m2, preferably 300 to 400 g / m2.
  • the amount and the consistency of the coating agent when finishing the spunbonded fabric are selected so that the woven pattern embossed on the spunbonded fabric is retained in the finished formwork sheet.
  • the pattern is evened out by the treatment with the coating agent, i. H. the level differences between the highest and the lowest points of the pattern become smaller, but the conditions for the coating can be chosen so that a weaving pattern to increase the slip resistance in the finished formwork sheet is retained.
  • the invention also relates to a method for producing the formwork sheet as defined in claim 10.
  • the formwork sheet can be lightly sprinkled on one or both sides with a non-stick agent, such as talc or sand, to prevent it from sticking when rolled up.
  • a non-stick agent such as talc or sand
  • the invention also relates to the use of the nonwoven webs of the type defined above which are waterproofed with the coating agent as formwork web.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Laminated Bodies (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

A casing sheet is described which substantially comprises a spunbonded fabric which has been given a water-proof finish by means of a coating agent and comprises filaments of an organic fibre-forming material. The casing sheet contains a structure in the form of a weaving pattern, which has been embossed on the spunbonded fabric during its production, on at least one surface, in order to increase its slip resistance.

Description

Die Erfindung betrifft eine Schalungsbahn mit verbesserter Rutschfestigkeit auf Grundlage eines wasserdicht ausgerüsteten Spinnvlieses, ein Verfahren zu deren Herstellung, sowie die Verwendung des wasserdicht ausgerüsteten Spinnvlieses als Schalungsbahn.The invention relates to a formwork sheet with improved slip resistance on the basis of a waterproof finished spunbonded fabric, a process for its production, and the use of the waterproofed spunbonded fabric as a formwork sheet.

Steildächer werden üblicherweise mit einer Holzverschalung hergestellt. Diese Verschalung erfordert oberseitig eine sogenannte Schalungsbahn, auch "Nagelpappe" genannt. Schalungsbahnen sollten einerseits wasserundurchlässig und andererseits luft- und dampfdurchlässig sein. Außerdem sollten sie eine hohe Festigkeit, insbesondere eine hohe Weiterreißfestigkeit und Nagelausreißfestigkeit besitzen. Ferner wird eine einseitige Rutschfestigkeit benötigt, damit der Dachdecker beim Begehen größtmöglichen Halt findet.Pitched roofs are usually made with wooden cladding. This formwork requires a so-called formwork sheet on the top, also called "nail board". Formwork sheets should on the one hand be impermeable to water and on the other hand should be permeable to air and steam. In addition, they should have a high strength, in particular a high tear resistance and nail tear resistance. Furthermore, a one-sided slip resistance is required so that the roofer finds the greatest possible hold when walking on.

Handelsübliche Schalungsbahnen bestehen im wesentlichen aus einem mit Bitumen beschichteten Glasvlies (vergl. z. B. Ullmanns Encyclopädie der technischen Chemie, 4. Auflage, Band 11, S. 371, Verlag Chemie, Weinheim/Bergstr., 1976). Die Antirutschseite solcher Vliese wird üblicherweise durch Auflegen eines Feinvlieses und durch Behandlung mit strukturierten Walzen bei der Bitumenbeschichtung hergestellt. Der Bitumenanteil typischer handelsüblicher Schalungsbahnen beträgt etwa 500 g/m².Commercial formwork sheets essentially consist of a glass fleece coated with bitumen (see, for example, Ullmann's Encyclopedia of Industrial Chemistry, 4th edition, volume 11, p. 371, Verlag Chemie, Weinheim / Bergstr., 1976). The non-slip side of such nonwovens is usually produced by laying on a fine nonwoven and by treatment with structured rollers during the bitumen coating. The bitumen content of typical commercial formwork sheets is about 500 g / m².

Der Erfindung liegt die Aufgabe zugrunde, eine Schalungsbahn zu schaffen, die ohne ein Feinvlies auskommt und die eine hohe Rutschfestigkeit und somit ein hohes Maß an Sicherheit bietet. Ferner wird mit der Erfindung eine Schalungsbahn bereitgestellt, die auf einfache Weise hergestellt werden kann, da der bisherige Bitumen-Prägeschritt beim Dachbahn-Hersteller entfällt, die einfach zu verlegen ist, da mit niedrigen Endflächengewichten gearbeitet werden kann und die sich durch eine hohe Weiterrißfestigkeit und Nagelausreißfestigkeit auszeichnet. So lassen sich zum Beispiel Nagelausreißfestigkeiten von 60 - 220 N (gemessen nach der UEATC-Prüfmethode) erreichen.The invention has for its object to provide a formwork sheet that does not require a fine fleece and that offers high slip resistance and thus a high level of safety. Furthermore, the invention provides a formwork sheet that can be produced in a simple manner, since the previous bitumen embossing step at the roofing sheet manufacturer is no longer necessary, since it is easy to install because low end surface weights can be worked and which is characterized by a high tear resistance and nail tear resistance. For example, nail pull-out strengths of 60 - 220 N (measured according to the UEATC test method) can be achieved.

Die Erfindung betrifft eine Schalungsbahn, die im wesentlichen aus einer mit einem Beschichtungsmittel wasserdicht ausgerüsteten verfestigten Spinnvliesbahn aus Filamenten aus organischem faserbildenden Material und mit einem aufgeprägten Webmuster besteht, wobei die Schalungsbahn zumindest auf einer Oberfläche, vorzugsweise auf einer Oberfläche, eine Struktur in Form eines Webmusters zur Erhöhung der Rutschfestigkeit aufweist.The invention relates to a formwork sheet which essentially consists of a solidified spun-bonded nonwoven web made of filaments made of organic fiber-forming material and coated with an embossed weave pattern, the formwork sheet having a structure in the form of a weave pattern on at least one surface, preferably on one surface has to increase the slip resistance.

Unter einer "Struktur in Form eines Webmusters" ist im Rahmen dieser Beschreibung eine Struktur zu verstehen, wie sie auch in Geweben anzutreffen ist. Diese Struktur wird bei der Herstellung des Spinnvlieses durch Prägung erzeugt und bleibt auch nach dem Ausrüsten mit dem Beschichtungsmittel auf der Schalungsbahn erhalten. Es lassen sich übliche Webmuster verwenden, wie Muster in Form der Atlasbindung, in Form der Köperbindung und insbesondere in Form der Leinwandbindung. Die Tiefe dieses Musters in der Schalungsbahn, also die Differenz zwischen den höchsten Erhebungen und den tiefsten benachbarten Vertiefungen wird so ausgewählt, daß sich ein ausreichender Grad an Rutschfestigkeit ergibt. Typische Werte für die Tiefe eines Webmusters liegen im Bereich von 0,05 bis 0,3 mm. Insbesondere besitzt die Schalungsbahn ein Webmuster in Form einer Leinwandbindung mit einer Tiefe von etwa 0,2 mm.In the context of this description, a “structure in the form of a weaving pattern” is to be understood as a structure that can also be found in fabrics. This structure is created by embossing during the production of the spunbonded fabric and is retained on the formwork sheet even after it has been coated with the coating agent. Usual weaving patterns can be used, such as patterns in the form of the satin weave, in the form of the twill weave and in particular in the form of the plain weave. The depth of this pattern in the formwork sheet, that is to say the difference between the highest elevations and the deepest adjacent depressions, is selected so that there is a sufficient degree of slip resistance. Typical values for the depth of a weaving pattern are in the range from 0.05 to 0.3 mm. In particular, the formwork sheet has a woven pattern in the form of a plain weave with a depth of about 0.2 mm.

Als Beschichtungsmittel lassen sich alle an sich üblichen organischen Verbindungen einsetzen, mit denen das Spinnvlies wasserdicht ausgerüstet werden kann. Dabei kann es sich um Kunstharze handeln, wie Polyethylen oder Polyvinylchlorid. Es können aber auch natürliche Beschichtungsmittel eingesetzt werden. Ganz besonders bevorzugt verwendet man Bitumen.All conventional organic compounds with which the spunbonded nonwoven can be made waterproof can be used as the coating agent. These can be synthetic resins, such as polyethylene or polyvinyl chloride. However, natural coating agents can also be used. Bitumen is very particularly preferably used.

Das Spinnvlies kann aus beliebigen Filamenten aus organischem faserbildenden Material bestehen. Beispiele dafür sind Polyethylen, Polypropylen, Polyamid und insbesondere Polyester. Man kann auch Mischungen dieser Filamentsorten verwenden.The spunbonded fabric can consist of any filaments made of organic fiber-forming material. Examples include polyethylene, polypropylene, polyamide and especially polyester. Mixtures of these types of filaments can also be used.

Die Filamente werden in an sich bekannter weise als Vlies abgelegt und anschließend mechanisch oder insbesondere thermomechanisch vorverfestigt, beispielsweise durch Kalandrieren mittels Glattkalander oder vorzugsweise mittels Prägekalander. Bereits auf diese Stufe kann also das webmuster dem Spinnvlies aufgeprägt werden. Dieses Muster kann aber auch erst nach der Verfestigung des Spinnvlieses durch einen separaten Prägeschritt erzeugt werden. Nach der Vorverfestigung des Spinnvlieses kann die Endverfestigung beispielsweise durch einen Binder erfolgen. Als Binder eignen sich alle dafür üblichen Mittel, wie Polyacrylat-Dispersion, Polyvinylester-Dispersion, Polyvinylalkohol, Polyurethan-Dispersionen oder Aminoplast- oder Phenoplast-Vorkondensate. Der Anteil solcher Binder beträgt üblicherweise 5-25 Gew.%. Insbesondere eignen sich Binderfasern, die bereits bei der Vliesherstellung zugefügt werden können.The filaments are deposited in a manner known per se as a fleece and then pre-consolidated mechanically or in particular thermomechanically, for example by calendering using a smooth calender or preferably using an embossing calender. Already at this stage, the woven pattern can be imprinted on the spunbond. However, this pattern can also only be produced by a separate embossing step after the spunbonded web has solidified. After the spunbond has been pre-consolidated, the final consolidation can be carried out, for example, using a binder. All conventional agents are suitable as binders, such as polyacrylate dispersion, polyvinyl ester dispersion, polyvinyl alcohol, polyurethane dispersions or aminoplast or phenoplast precondensates. The proportion of such binders is usually 5-25% by weight. Binder fibers, which can be added during the production of the nonwoven, are particularly suitable.

Besonders bevorzugt verwendet man Spinnvliese auf Basis von Polyesterfasern, insbesondere solche, die schmelzbinderverfestigt sind.It is particularly preferred to use spunbonded nonwovens based on polyester fibers, in particular those which are bonded with a melt binder.

Typische Werte für die Flächengewichte der zu vervendenden Spinnvliese bewegen sich im Bereich zwischen 60 und 120 g/m², vorzugsweise 80 bis 100 g/m².Typical values for the grammages of the spunbonded nonwovens to be used are in the range between 60 and 120 g / m², preferably 80 to 100 g / m².

Die Dicke der zu verwendenden Spinnvliese liegt üblicherweise zwischen 0,20 und 0,50 mm, insbesondere zwischen 0,30 und 0,40 mm.The thickness of the spunbonded nonwovens to be used is usually between 0.20 and 0.50 mm, in particular between 0.30 and 0.40 mm.

In einer besonders bevorzugten Ausführungsform verwendet man Spinnvliese aus tragenden Filamenten die aus Polyester bestehen, und aus als Schmelzbinder dienenden Filamenten, die aus Polyester bestehen, wobei das Flächengewicht des Spinnvlieses zwischen 60 und 100 g/m² liegt, der Einzeltiter der tragenden Filamente und Binderfilamente im Bereich zwischen 1 und 7 dtex liegt und der Anteil der Binderfilamente bis zu 12 Gew.% beträgt.In a particularly preferred embodiment, spunbonded nonwovens made from load-bearing filaments made of polyester and from filament serving as melt binders made from polyester, the basis weight of the spunbonded fabric being between 60 and 100 g / m 2, the individual titer of the load-bearing filaments and binder filaments in Range is between 1 and 7 dtex and the proportion of binder filaments is up to 12% by weight.

Vorzugsweise liegt das Flächengewicht solcher Spinnvliese zwischen 60 und 90 g/m², der Einzeltiter der Filamente zwischen 1 und 5 dtex, insbesondere 1 und 4 dtex, und der Anteil der Binderfilamente zwischen 5 und 10 Gewichtsprozent. Der Titer der Binderfilamente wird vorzugsweise kleiner als der Titer der tragenden Filamente gewählt.The basis weight of such spunbonded fabrics is preferably between 60 and 90 g / m 2, the individual titer of the filaments is between 1 and 5 dtex, in particular 1 and 4 dtex, and the proportion of binder filaments is between 5 and 10 percent by weight. The titer of the binder filaments is preferably chosen to be smaller than the titer of the supporting filaments.

Die tragenden Filamente bestehen vorzugsweise aus Polyethylenterephthalat, während der Schmelzbinder aus Polymeren besteht, deren Schmelzpunkt unter dem Schmelzpunkt der tragenden Filamente liegt. Bevorzugt werden Schmelzbindefasern aus einem isophtalsäuremodifizierten Polyester mit einem entsprechend abgesenktem Schmelzpunkt.The supporting filaments are preferably made of polyethylene terephthalate, while the melt binder consists of polymers whose melting point is below the melting point of the supporting filaments. Melt binding fibers made from an isophthalic acid-modified polyester with a correspondingly lowered melting point are preferred.

Insbesondere können zumindest die tragenden Filamente aus flammhemmend modifizierten Polyestern, wie sie z. B. die DE-PS 23 46 787 beschreibt, bestehen.In particular, at least the load-bearing filaments made of flame-retardant modified polyesters, such as z. B. describes the DE-PS 23 46 787 exist.

Bevorzugt bestehen auch die Binderfilamente aus flammhemmend modifiziertem Rohstoff, insbesondere aus isophthalsäuremodifizierten Polyestern oder aber z. B. auch aus Polybutylenterephthalat, wie sie auch die DE-PS 25 26 749 beschreibt.The binder filaments preferably also consist of a flame-retardant modified raw material, in particular of isophthalic acid-modified polyesters or z. B. also from polybutylene terephthalate, as described in DE-PS 25 26 749.

Ganz besonders bevorzugte Spinnvliese dieses Typs sind durch Binderfilamente gekennzeichnet, deren Schmelzpunkt weniger als 30°C, vorzugsweise weniger als 20°C, unter dem Schmelzpunkt der tragenden Filamente liegt. Schalungsbahnen aus diesen Vliesen lassen sich bei hohen Temperaturen (weiter)verarbeiten und sind thermisch besonders belastbar.Very particularly preferred spunbonded nonwovens of this type are characterized by binder filaments, the melting point of which is less than 30 ° C., preferably less than 20 ° C., below the melting point of the supporting filaments. Formwork sheets made from these nonwovens can be (further) processed at high temperatures and are particularly heat-resistant.

Besonders bevorzugt verwendet man voluminöse Spinnvliese dieses Typs, die sich bei einem möglichst geringen Anteil von Binderfilamenten und einer Siebtrommelfixierung ergeben. Diese Spinnvliese haben dann auch eine Oberflächenstruktur mit vielen Faserenden, die die Haftung des Beschichtungsmittels deutlich erhöht.It is particularly preferred to use voluminous spunbonded nonwovens of this type which result from the lowest possible proportion of binder filaments and a sieve drum fixation. These spunbonded fabrics also have a surface structure with many fiber ends, which significantly increases the adhesion of the coating agent.

In einer weiteren besonders bevorzugten Ausführungsform verwendet man Spinnvliese aus tragenden Filamenten, die aus Polyester bestehen und aus als Schmelzbinder dienenden Filamenten, die aus Polyester bestehen, wobei die Binderfilamente aus einem modifizierten Polyethylenterephthalat bestehen, welches flammhemmende Eigenschaften aufweist.In a further particularly preferred embodiment, spunbonded nonwovens made from load-bearing filaments made of polyester and from filaments serving as melt binders made from polyester are used, the binder filaments consisting of a modified polyethylene terephthalate which has flame-retardant properties.

Bei diesem Spinnvlies bestehen die tragenden Filamente im allgemeinen aus unmodifizierten Polyestern, vorzugsweise aus Polyethylenterephthalat und die Binderfilamente aus schwer entflammbaren Polyestern, die vorzugsweise Dicarbonsäure- und Diolkomponenten und einkondensierte P-haltige Kettenglieder enthalten. Bevorzugt liegt das Flächengewicht dieser Spinnvliese über 60 g/m², besonders bevorzugt ist der Einzeltiter der tragenden Filamente und Binderfilamente im Bereich zwischen 1 und 7 dtex.In this spunbonded fabric, the load-bearing filaments generally consist of unmodified polyesters, preferably of polyethylene terephthalate, and the binder filaments of flame-retardant polyesters, which preferably contain dicarboxylic acid and diol components and condensed P-containing chain links. The weight per unit area of these spunbonded nonwovens is preferably above 60 g / m 2, and the single titer of the supporting filaments and binder filaments is particularly preferably in the range between 1 and 7 dtex.

Vorzugsweise liegt das Flächengewicht dieser Spinnvliese zwischen 60 und 120 g/m², der Einzeltiter der Filamente zwischen 1 und 10 dtex, insbesondere 1 und 5 dtex, und der Anteil der Binderfilamente zwischen 5 und 20 Gewichtsprozent. Der Titer der Binderfilamente wird vorzugsweise kleiner als der Titer der tragenden Filamente gewählt.The basis weight of these spunbonded nonwovens is preferably between 60 and 120 g / m 2, the individual titer of the filaments is between 1 and 10 dtex, in particular 1 and 5 dtex, and the proportion of binder filaments is between 5 and 20 percent by weight. The titer of the binder filaments is preferably chosen to be smaller than the titer of the supporting filaments.

Bevorzugt wird als Schmelzbinder modifiziertes Polyethylenterephtalat, wie es z. B. in der DE-PS 23 46 787 beschrieben wird, mit entsprechend abgesenkten Schmelzpunkt verwendet. Der Schmelzpunkt der Binderfilamente liegt bei diesen bevorzugten Spinnvliesen 20°C, insbesondere 15°C, unter dem Festpunkt der Matrixfilamente.Modified polyethylene terephthalate, as described, for example, is preferred as the melt binder. B. is described in DE-PS 23 46 787, used with a correspondingly lowered melting point. The melting point of the binder filaments in these preferred spunbonded nonwovens is 20 ° C., in particular 15 ° C., below the fixed point of the matrix filaments.

Die Polyester der Binderfilamente in diesen bevorzugten Spinnvliesen bestehen im allgemeinen aus Dicarbonsäure- und Diolkomponenten sowie aus phosphorhaltigen Kettengliedern und sind dadurch gekennzeichnet, daß die phosphorhaltigen Kettenglieder Struktureinheiten der Formel

Figure imgb0001

sind, welche etwa 3-20 Molprozent der Säurekomponente des Polyesters ausmachen, wobei in der Formel

R =
gesättigter, offenkettiger oder cyclischer Alkylenrest mit vorzugsweise 1-15 C-Atomen oder ein Arylen- oder Aralkylenrest
und
R₁ =
ein Alkylrest mit vorzugsweise bis zu 6 C-Atomen, ein Aryl- oder Aralkylrest ist.
The polyesters of the binder filaments in these preferred spunbonded fabrics generally consist of dicarboxylic acid and diol components and of phosphorus-containing chain links and are characterized in that the phosphorus-containing chain links have structural units of the formula
Figure imgb0001
which make up about 3-20 mole percent of the acid component of the polyester, wherein in the formula
R =
saturated, open-chain or cyclic alkylene radical with preferably 1-15 C atoms or an arylene or aralkylene radical
and
R₁ =
is an alkyl radical with preferably up to 6 carbon atoms, an aryl or aralkyl radical.

Als Dicarbonsäure-Ausgangsstoffe für Polyester der erfindungsgemäß einzusetzenden Spinnvliese werden außer der bevorzugten Terephthalsäure auch andere Dicarbonsäuren, vorzugsweise als Cokomponenten, verwendet. Infrage kommen hier beispielsweise Isophthalsäure, 5-Sulfoisophthalsäure, 5-Sulfopropoxyisophthalsäure, Naphthalin-2,6-Dicarbonsäure, Diphenyl-p,p'-dicarbonsäure, p-Phenylendiessigsäure, Diphenyloxid-p,p'-dicarbonsäure, Diphenoxyalkan-Dicarbonsäuren, trans-Hexahydro-terephtalsäure, Adipinsäure, Sebacinsäure, oder 1,2-Cyclobutandicarbonsäure. Als Diolkomponenten kommen neben dem bevorzugten Ethylenglykol z. B. Propandiol-1,3, Butandiol-1,4 und die höheren Homologen des Butandiols-1,4, sowie weiterhin 2,2-Dimethylpropandiol-1,3, 1,4-Cyclohexandimethanol etc., auch als Cokomponenten in Frage.In addition to the preferred terephthalic acid, other dicarboxylic acids, preferably as co-components, are used as dicarboxylic acid starting materials for polyesters of the spunbonded fabrics to be used according to the invention. For example, isophthalic acid, 5-sulfoisophthalic acid, 5-sulfopropoxyisophthalic acid, naphthalene-2,6-dicarboxylic acid, diphenyl-p, p'-dicarboxylic acid, p-phenylenediacetic acid, diphenyloxide-p, p'-dicarboxylic acid, diphenoxyalkane dicarboxylic acids, trans- Hexahydro-terephthalic acid, adipic acid, sebacic acid, or 1,2-cyclobutanedicarboxylic acid. As diol components come in addition to the preferred ethylene glycol z. B. 1,3-propanediol, 1,4-butanediol and the higher homologues of 1,4-butanediol, and also 2,2-dimethylpropanediol-1,3, 1,4-cyclohexanedimethanol etc., also as co-components in question.

Wenn man außer der Terephthalsäure noch andere von den genannten Dicarbonsäuren einsetzt, werden vorzugsweise nicht wesentlich mehr als 10 Molprozent der Gesamtsäure-Komponente verwendet. In ähnlicher Weise wird bei der Zusammensetzung der Diolkomponente verfahren. Wenn hier z. B. außer dem Ethylenglykol noch weitere Diole als Cokomponente eingesetzt werden, beträgt deren Menge vorzugsweise ebenfalls nicht wesentlich mehr als 10 Molprozent der gesamten Diolkomponente.If, in addition to terephthalic acid, other dicarboxylic acids mentioned are used, it is preferred not to use significantly more than 10 mole percent of the total acid component. The procedure for the composition of the diol component is similar. If here z. B. in addition to the ethylene glycol, other diols are used as co-component, the amount of which is preferably likewise not significantly more than 10 mol percent of the total diol component.

In weiterer Ausgestaltung der Erfindung wird ein Spinnvlies verwendet, in das mittels der Binderfilamente ein Antistatikum wie z. B. Ruß in das Spinnvlies eingebracht wurde.In a further embodiment of the invention, a spunbonded nonwoven is used, in which an antistatic such as e.g. B. carbon black has been introduced into the spunbond.

Zur Herstellung der erfindungsgemäßen Schalungsbahn wird das Spinnvlies ein- oder beidseitig mit einem Beschichtungsmittel, vorzugsweise mit Bitumen ausgerüstet. Dies kann durch Bestreichen des Spinnvlieses oder durch Tränken des Spinnvlieses mit dem Beschichtungsmittel erfolgen, gegebenenfalls gefolgt vom Abstreifen oder Abquetschen überschüssiger Anteile des Beschichtungsmittels.To produce the formwork sheet according to the invention, the spunbonded fabric is equipped on one or both sides with a coating agent, preferably with bitumen. This can be done by brushing the spunbonded fabric or by soaking the spunbonded fabric with the coating agent, optionally followed by stripping or squeezing off excess portions of the coating agent.

Der Anteil des Beschichtungsmittels in der fertigen Schalungsbahn beträgt üblicherweise etwa 140 bis 280 g/m².The proportion of the coating agent in the finished formwork sheet is usually about 140 to 280 g / m².

Das Flächengewicht der fertigen Schalungsbahn beläuft sich im allgemeinen auf etwa 200 bis 400 g/m², vorzugsweise auf 300 bis 400 g/m².The weight per unit area of the finished formwork sheet is generally about 200 to 400 g / m², preferably 300 to 400 g / m².

Die Menge und die Konsistenz des Beschichtungsmittels beim Ausrüsten des Spinnvlieses werden so gewählt, daß das auf das Spinnvlies aufgeprägte Webmuster in der fertigen Schalungsbahn erhalten bleibt. Das Muster wird durch die Behandlung mit dem Beschichtungsmittel zwar vergleichmäßigt, d. h. die Niveauunterschiede zwischen den höchsten und den tiefsten Stellen des Musters werden geringer, doch können die Bedingungen bei der Beschichtung so gewählt werden, daß ein Webmuster zur Erhöhung der Rutschfestigkeit in der fertigen Schalungsbahn erhalten bleibt. Die Erfindung betrifft auch ein Verfahren zur Herstellung der Schalungsbahn, wie in Anspruch 10 definiert.The amount and the consistency of the coating agent when finishing the spunbonded fabric are selected so that the woven pattern embossed on the spunbonded fabric is retained in the finished formwork sheet. The pattern is evened out by the treatment with the coating agent, i. H. the level differences between the highest and the lowest points of the pattern become smaller, but the conditions for the coating can be chosen so that a weaving pattern to increase the slip resistance in the finished formwork sheet is retained. The invention also relates to a method for producing the formwork sheet as defined in claim 10.

Nach der Herstellung kann die Schalungsbahn ein- oder beidseitig leicht mit einem Antihaftmittel, wie Talkum oder Sand abgestreut werden, um eine Verklebung in aufgerolltem Zustand zu vermeiden.After production, the formwork sheet can be lightly sprinkled on one or both sides with a non-stick agent, such as talc or sand, to prevent it from sticking when rolled up.

Bei dieser Herstellungsweise entfallen bei dem Dachbahn-Produzenten zusätzliche Arbeitsgänge, wie Auftragen eines Feinvlieses oder die Benutzung oberflächig speziell ausgerüsteter Walzen zur Erzeugung einer oberflächigen Struktur in der Schalungsbahn. Der Wegfall dieser Arbeitsschritte hat eine Kostenersparnis zur Folge. Außerdem kann mit geringeren Mengen an Beschichtungsmittel gearbeitet werden als die bisher üblichen Mengen. Die Erfindung betrifft auch die Verwendung der mit dem Beschichtungsmittel wasserdicht ausgerüsteten Vliesbahnen des oben definierten Typs als Schalungsbahn.With this production method, additional processes such as applying a fine fleece or using specially equipped rollers on the surface to create a superficial structure in the formwork membrane are not necessary for the roofing membrane manufacturer. The elimination of these steps leads to cost savings. In addition, it is possible to work with smaller amounts of coating agent than the previously customary amounts. The invention also relates to the use of the nonwoven webs of the type defined above which are waterproofed with the coating agent as formwork web.

Claims (11)

Schalungsbahn bestehend im wesentlichen aus einer mit einem Beschichtungsmittel wasserdicht ausgerüsteten Vliesbahn, dadurch gekennzeichnet, daß die Vliesbahn ein verfestigtes Spinnvlies aus Filamenten aus organischem faserbildenden Material und mit einem aufgeprägten Webmuster ist, und daß die Schalungsbahn zumindest auf einer Oberfläche eine Struktur in Form eines Webmusters zur Erhöhung der Rutschfestigkeit aufweist.Formwork sheet consisting essentially of a nonwoven web equipped with a waterproofing agent, characterized in that the nonwoven web is a consolidated spunbonded nonwoven made of filaments made of organic fiber-forming material and with an embossed woven pattern, and that the formwork sheet has a structure in the form of a weave pattern on at least one surface Has increased slip resistance. Schalungsbahn gemäß Anspruch 1, dadurch gekennzeichnet, daß die Oberflächenstruktur die Form einer Leinwandbindung aufweist, die insbesondere eine Tiefe von etwa 0,05 bis 0,3 mm besitzt.Formwork sheet according to claim 1, characterized in that the surface structure has the shape of a plain weave, which in particular has a depth of about 0.05 to 0.3 mm. Schalungsbahn gemäß Anspruch 1, dadurch gekennzeichnet, daß das Beschichtungsmittel Bitumen ist.Formwork sheet according to claim 1, characterized in that the coating agent is bitumen. Schalungsbahn gemäß einem der Ansprüche 1, 2 oder 3, dadurch gekennzeichnet, daß es sich bei dem organischen faserbildenden Material um Polyester handelt.Formwork sheet according to one of claims 1, 2 or 3, characterized in that the organic fiber-forming material is polyester. Schalungsbahn gemäß Anspruch 1, dadurch gekennzeichent, daß das Spinnvlies schmelzbinderverfestigt ist.Formwork sheet according to claim 1, characterized in that the spunbonded fabric is bonded with a melt binder. Schalungsbahn gemäß Anspruch 5, dadurch gekennzeichnet, daß es sich bei dem schmelzbinderverfestigten Spinnvlies um ein Vlies aus tragenden Filamenten und aus als Schmelzbinder dienenden Filamenten handelt, die aus Polyester bestehen, wobei das Spinnvlies ein Flächengewicht von 60 bis 100 g/m² aufweist, der Einzeltiter der tragenden Filamente und der Binderfilamente 1 bis 7 dtex und der Anteil der Binderfilamente, bezogen auf das Spinnvlies, bis zu 12 Gew.% beträgt.Formwork sheet according to claim 5, characterized in that the melt-bond-strengthened spunbond is a nonwoven made of supporting filaments and of filaments serving as meltbinders, which consist of polyester, the spunbonded fabric having a weight per unit area of 60 to 100 g / m², the individual titer the load-bearing filaments and the binder filaments 1 to 7 dtex and the proportion of the binder filaments, based on the spunbond, is up to 12% by weight. Schalungsbahn gemäß Anspruch 6, dadurch gekennzeichnet, daß der Schmelzpunkt der Binderfilamente weniger als 30°C unter dem Schmelzpunkt der tragenden Filamente liegt.Formwork sheet according to claim 6, characterized in that the melting point of the binder filaments is less than 30 ° C below the melting point of the supporting filaments. Schalungsbahn gemäß Anspruch 5, dadurch gekennzeichnet, daß es sich bei dem schmelzbinderverfestigten Spinnvlies um ein Vlies aus tragenden Filamenten und aus als Schmelzbinder dienenden Filamenten handelt, die aus Polyester bestehen, wobei die Binderfilamente aus einem modifizierten Polyethylenterephthalat bestehen, welches flammhemmende Eigenschaften aufweist.Formwork sheet according to claim 5, characterized in that the melt-bond-strengthened spunbond is a nonwoven made of supporting filaments and of filaments serving as melt binders which consist of polyester, the binder filaments consisting of a modified polyethylene terephthalate which has flame-retardant properties. Schalungsbahn gemäß einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Flächengewicht der Schalungsbahn 300 bis 400 g/m² beträgt.Formwork sheet according to one of Claims 1 to 8, characterized in that the weight per unit area of the formwork sheet is 300 to 400 g / m². Verfahren zur Herstellung der Schalungsbahn gemäß Anspruch 1, umfassend die Schritte: i) Herstellung eines verfestigten Spinnvlieses aus Filamenten aus organischem faserbildenden Material in an sich bekannter Weise, ii) Aufbringen einer Prägestruktur in Form eines Webmusters auf mindestens eine der Oberflächen des Spinnvlieses durch Prägen mit einem Kalander, und iii) Beschichten des geprägten Vlieses mit einem Beschichtungsmittel, insbesondere mit Bitumen in an sich bekannter Weise und in einer solchen Menge, so daß auf zumindest einer Oberfläche eine Struktur in Form eines Webmusters zur Erhöhung der Rutschfestigkeit erhalten bleibt, und daß die Schalungsbahn wasserdicht ist, mit der Maßgabe, daß Schritt ii) auch zusammen mit dem Verfestigen des Spinnvlieses erfolgen kann. A method for producing the formwork sheet according to claim 1, comprising the steps: i) production of a consolidated spunbonded nonwoven from filaments made of organic fiber-forming material in a manner known per se, ii) applying an embossed structure in the form of a weaving pattern to at least one of the surfaces of the spunbonded web by embossing with a calender, and iii) coating the embossed nonwoven with a coating agent, in particular with bitumen, in a manner known per se and in such an amount that a structure in the form of a weave pattern to increase the slip resistance is retained on at least one surface, and that the formwork sheet is waterproof, with the proviso that step ii) can also take place together with the consolidation of the spunbonded nonwoven. Verwendung der mit dem Beschichtungsmittel behandelten Vliesbahn gemäß Anspruch 1 als Schalungsbahn.Use of the nonwoven web treated with the coating agent according to claim 1 as a formwork web.
EP19910106267 1990-04-21 1991-04-18 Casing sheet Withdrawn EP0453968A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4012718A DE4012718A1 (en) 1990-04-21 1990-04-21 FORMWORK
DE4012718 1990-04-21

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EP0453968A2 true EP0453968A2 (en) 1991-10-30
EP0453968A3 EP0453968A3 (en) 1993-02-17

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EP19910106267 Withdrawn EP0453968A3 (en) 1990-04-21 1991-04-18 Casing sheet

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US (1) US5219635A (en)
EP (1) EP0453968A3 (en)
JP (1) JPH04224942A (en)
CA (1) CA2040811A1 (en)
DE (1) DE4012718A1 (en)
FI (1) FI911881L (en)
IE (1) IE911323A1 (en)
NO (1) NO911556L (en)
PT (1) PT97408A (en)

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EP0585626A1 (en) * 1992-08-14 1994-03-09 Hoechst Aktiengesellschaft Laminated mineral fibre mat
DE9407750U1 (en) * 1994-05-10 1994-06-30 Icopal-Siplast GmbH, 59368 Werne Formwork sheet, in particular for covering sloping roofs
EP0590629A3 (en) * 1992-10-02 1994-09-14 Hoechst Ag Bituminous under-roofing felt and carrier web

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DE9207367U1 (en) * 1992-05-30 1992-09-10 Johns Manville International, Inc., Denver, Col. Laminate made of fleece and scrim
US6206934B1 (en) * 1998-04-10 2001-03-27 Flex-Foot, Inc. Ankle block with spring inserts
FR2730257B1 (en) * 1995-02-06 1997-04-25 Colas Sa BITUMINOUS MEMBRANE FOR GEOTECHNICAL USE AND MANUFACTURING METHOD THEREOF
DE19512767C2 (en) * 1995-04-05 1997-12-04 Hoechst Trevira Gmbh & Co Kg Rollable thermal insulation based on fully synthetic fibers
DE19942878A1 (en) * 1999-09-08 2001-03-15 Sandler C H Gmbh Sealing material for construction industry consists of bitumen sheeting covered with synthetic fibre mat
DE10057149A1 (en) * 2000-11-17 2002-05-23 Kloeber Johannes Diffusion-open roofing membrane
US20100136269A1 (en) * 2005-11-01 2010-06-03 E. Khashoggi Industries, Llc Extruded fiber reinforced cementitious products having wood-like properties and ultrahigh strength and methods for making the same
EP1954645A4 (en) * 2005-11-01 2011-09-07 Khashoggi E Ind CEMENTITIOUS COMPOSITES HAVING PROPERTIES SIMILAR TO WOOD AND METHODS OF MANUFACTURE
US20080099122A1 (en) * 2006-11-01 2008-05-01 E. Khashoggi Industries Llc Cementitious composites having wood-like properties and methods of manufacture
US8534003B2 (en) * 2006-04-27 2013-09-17 Ledgetech Holdings, Llc Roll-out structure/hurricane sheathing
US8595987B2 (en) * 2006-04-27 2013-12-03 Ledgetech Holdings, Llc Roll-out structure/hurricane sheathing
CH699195A1 (en) * 2008-07-23 2010-01-29 Quadrant Plastic Composites Ag Fiber composite laminates with improved surface and methods for their preparation.
CN111002676A (en) * 2014-02-04 2020-04-14 古普里特·辛格·桑德哈 Roofing membrane made of synthetic fiber fabric with anti-skid property
DE102017101969A1 (en) 2017-02-01 2018-08-02 Monier Roofing Components Gmbh Roofing underlayment
US20230295929A1 (en) 2022-01-28 2023-09-21 Ft Synthetics Inc. Embossed fleece materials for roofing underlayments

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GB1074954A (en) * 1963-08-14 1967-07-05 Fleeman Harry Improvement relating to roof and floor coverings
SE429769B (en) * 1980-04-01 1983-09-26 Nordiskafilt Ab ARKAGGREGT AND WAY TO MANUFACTURE THE SAME
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DE3724510A1 (en) * 1987-07-24 1989-02-09 Reifenhaeuser Masch Nonwoven textile web of thermoplastic material and manufacture thereof
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JPH01260057A (en) * 1988-04-08 1989-10-17 Asahi Chem Ind Co Ltd Moisture-permeable and waterproof sheet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0585626A1 (en) * 1992-08-14 1994-03-09 Hoechst Aktiengesellschaft Laminated mineral fibre mat
EP0590629A3 (en) * 1992-10-02 1994-09-14 Hoechst Ag Bituminous under-roofing felt and carrier web
US5660915A (en) * 1992-10-02 1997-08-26 Hoechst Aktiengesellschaft Bituminous roofing underfelt and base felt therefor
DE9407750U1 (en) * 1994-05-10 1994-06-30 Icopal-Siplast GmbH, 59368 Werne Formwork sheet, in particular for covering sloping roofs

Also Published As

Publication number Publication date
DE4012718A1 (en) 1991-10-24
EP0453968A3 (en) 1993-02-17
CA2040811A1 (en) 1991-10-22
NO911556L (en) 1991-10-22
JPH04224942A (en) 1992-08-14
NO911556D0 (en) 1991-04-19
FI911881A0 (en) 1991-04-18
IE911323A1 (en) 1991-10-23
FI911881A7 (en) 1991-10-22
US5219635A (en) 1993-06-15
FI911881L (en) 1991-10-22
PT97408A (en) 1993-07-30

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