[go: up one dir, main page]

EP0590629B1 - Bituminous under-roofing felt and carrier web - Google Patents

Bituminous under-roofing felt and carrier web Download PDF

Info

Publication number
EP0590629B1
EP0590629B1 EP93115701A EP93115701A EP0590629B1 EP 0590629 B1 EP0590629 B1 EP 0590629B1 EP 93115701 A EP93115701 A EP 93115701A EP 93115701 A EP93115701 A EP 93115701A EP 0590629 B1 EP0590629 B1 EP 0590629B1
Authority
EP
European Patent Office
Prior art keywords
spunbonded
filaments
binder
underfelt
weight
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.)
Expired - Lifetime
Application number
EP93115701A
Other languages
German (de)
French (fr)
Other versions
EP0590629A3 (en
EP0590629A2 (en
Inventor
Michael Schöps
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.)
Johns Manville
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 EP0590629A2 publication Critical patent/EP0590629A2/en
Publication of EP0590629A3 publication Critical patent/EP0590629A3/en
Application granted granted Critical
Publication of EP0590629B1 publication Critical patent/EP0590629B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • 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
    • E04D12/00—Non-structural supports for roofing materials, e.g. battens, boards
    • E04D12/002—Sheets of flexible material, e.g. roofing tile underlay
    • 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.]
    • 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
    • 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
    • Y10T428/24595—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness and varying density
    • 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
    • Y10T428/24595—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness and varying density
    • Y10T428/24603—Fiber containing component
    • 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.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]

Definitions

  • the present invention relates to a roofing membrane with improved water vapor permeability and a carrier sheet for this roofing membrane as well as methods for producing these objects.
  • roofing membranes are known to be installed under the tile or slate of steep roofs as protection against flying snow, splash water, dust and the like.
  • roofing membranes should on the one hand be impermeable to water and on the other hand permeable to air and steam. In addition, they should have a high strength, in particular a high tear resistance, in order to be able to absorb the weight of the roofer, for example in the event of an accident.
  • roofing membranes made of lattice-proven foils are widespread. Although these films have good tear strength, the tear resistance and often also the vapor permeability remain unsatisfactory.
  • EP-PS 0027750 describes a carrier web for a roofing membrane which consists of a nonwoven fabric made of polypropylene, polyethylene, polyester or polyvinyl and has a weight per unit area between 85 to 200 g / m 2 .
  • the nonwoven fabric is provided with a bitumen layer on one side by warmly coating the nonwoven fabric with the bitumen and then subjecting it to cooling in order to cause microholes or microcracks.
  • the micro holes or micro cracks in this known roofing membrane are intended to improve the vapor permeability.
  • a carrier web for roofing membranes which consists of a spunbond made of polyester, in particular polyethylene terephthalate filaments, the spunbonded fabric having a basis weight of 50 to 100 g / m 2 , with a single titer of the filaments of 1 to 8 dtex and is solidified by a melt binder.
  • the melting point of the melt binder should advantageously be 10 ° C., preferably 30 ° C. below the melting point of the supporting filaments.
  • melt binders consisting of polyesters, preferably polybutylene terephthalate or modified polyethylene terephthalate, are particularly suitable.
  • carrier webs made of polypropylene which has a softening point of approximately 156 ° C., are less suitable for bituminization.
  • the carrier web known from this publication has a tear strength of approximately 20 to 80 N.
  • a formwork web consisting of a spunbonded nonwoven made of organic fiber-forming materials with a coating agent, which has at least on one surface a structure in the form of a weave pattern to increase the slip resistance, which the spunbonded nonwoven during its manufacture was imprinted.
  • bituminized web of bitumen and a spunbonded web consisting of structural and binding fibers is known.
  • DE-OS-3,015,416 discloses spunbonded nonwovens which, in addition to the main proportion of the filaments, contain special filaments or special yarns which differ in their properties from those of the main quantity of the filaments. There is no evidence that these spunbonded nonwovens are suitable for the production of roofing underlays.
  • EP-A-0,455,990 discloses melt-bond-bonded spunbonded nonwovens in which the melting point of the binding filaments is less than 30 ° C. below that of the supporting filaments.
  • GB-A-2,198,756 discloses melt-backed carpet backings which consist of polyethylene terephthalate carrier fibers and polypropylene binder fibers.
  • the present invention now relates to a bituminized roofing membrane which has a significantly improved vapor permeability compared to known roofing membranes.
  • the bituminized roofing membrane according to the invention consists of a spunbonded fabric of polyester, in particular polyethylene terephthalate filaments embedded in a bitumen matrix with a single titer of 1-8 dtex, characterized in that the weight fraction of the bitumen in the basis weight of the roofing membrane is 40 to 90% that of the spunbonded fabric 10 is up to 60% that the spunbonded fabric is consolidated by a melt binder, the melting point of which is 150-180 ° C and which is contained in a weight fraction of 5 to 20% of the total weight in the spunbonded fabric, and that the spunbonded fabric is an embossed pattern of statistically distributed or repeat arranged small-area embossments, preferably a canvas embossing, in which the pressing surface, ie the total area of all thin, compacted areas of the spunbonded fabric makes up 30-60%, preferably 40-45% of the total area and the difference in thickness between compacted and non-compacted areas of the nonwoven fabric s is at least 25%, preferably 30-50% and
  • the bitumen matrix of the roofing membrane according to the invention can consist of all known bitumen types suitable for impregnation purposes, in particular also of polymer bitumen.
  • the melt binder used to solidify the spunbonded fabric expediently has a melting temperature of 150 to 180 ° C.
  • the above-mentioned can be carried out under the usual bituminizing conditions and using the usual bitumen masses Realize the condition that the impregnation with bitumen should take place at a temperature that is above the melting temperature of the melt binder used to solidify the spunbonded nonwoven.
  • melt binder for the spunbonded fabric to be used according to the invention is a polypropylene meltbinder which is incorporated into the spunbonded fabric with particular advantage in the form of binding fibers.
  • the melt index of the polypropylene used as the melt binder is expediently from 150 to 180 ° C., preferably from 155 to 175 ° C.
  • the bituminized roofing underlayment according to the invention contains a spunbonded nonwoven as described above, which has an embossing pattern of statistically distributed or repeat-arranged small-area embossments, preferably a canvas embossing, in which the pressing surface, i.e.
  • the spunbonded fabric contained in the bituminized roofing membrane according to the invention advantageously has a basis weight of 50 to 250 g / m 2 , preferably from 80 to 120 g / m 2 , a thickness of about 0.2 to 0.6, preferably from 0.25 to 0.4 mm and an extensibility of 20 to 40%.
  • the tensile strength for the spun fleece implemented in the bituminized roofing membrane according to the invention, measured on a 5 cm wide strip, is 10 to 25 daN.
  • the carrier web contained in the preferred embodiment of the bituminized roofing membrane according to the invention which consists of a spunbonded fabric made of polyester, in particular polyethylene terephthalate filaments with a single titer of 1-8 dtex, characterized in that it has an embossing pattern from statistical distributed or rapport-arranged small-area impressions, preferably canvas embossing, in which the pressing surface, ie the total area of all thin, compacted areas of the spunbonded fabric makes up 30-60%, preferably 40-45% of the total area and the difference in thickness between compacted and non-compacted areas of the nonwoven fabric is at least 25%, preferably 30-50% and that it is due to a melt binder, whose melting point is between 150-180 ° C, and which is contained in a weight fraction of 5 to 20% of the total weight in the spunbond, is solidified and that the spunbond has a tensile strength of 10 to 25 daN, measured on a 5 cm wide strip.
  • the embossed pattern of the carrier web according to the invention also contributes to the increased water vapor permeability of the bituminized roofing membrane according to the invention.
  • This embossing pattern which is applied to both surfaces of the spunbonded fabric, but preferably only to one surface of the spunbonded fabric, when it passes through the spunbonded fabric, has a large number of small embossments which have a size of 0.2 to 40 mm 2 and through Intermediate, approximately equal, non-embossed surface elements of the fleece are separated from one another.
  • Decisive for the improved Water vapor permeability of the bituminized roofing membrane according to the invention is the use of a melt binder for strengthening the carrier web, the melting point of which is below the temperature at which the bituminizing of the carrier web takes place.
  • the bituminizing temperature and the melting temperature of the melting binder are expediently coordinated with one another in such a way that the melting point of the melting binder is at least 1 ° C., preferably 10 to 30 ° C., below the processing temperature of the bitumen used in the production of the bituminized roofing membrane.
  • a melt binder which is particularly preferred for solidifying the carrier web according to the invention consists of polypropylene. It is particularly advantageous to introduce this melt binder in the form of binding fibers into the spunbonded nonwoven of the carrier web.
  • the carrier web according to the invention advantageously has a weight per unit area of 50 to 250 g / m 2 , preferably 80 to 120 g / m 2 and a thickness of 0.2 to 0.6, preferably 0.25 to 0.4 mm. Its tear strength, measured on a 5 cm wide strip, is 10 to 25 daN and it has an extensibility of 20 to 40%.
  • the carrier web according to the invention consisting of a spunbond of polyester, in particular polyethylene terephthalate filaments with a single titer of 1-8 dtex, which by a melt binder, the melting point is 150 and 180 ° C and in one
  • the weight fraction of 5 to 20% of the total weight is contained in the spunbonded fabric, is solidified, and has an embossed pattern of statistically distributed or repeat-arranged small-area embossments, preferably a canvas embossing, in which the press area, ie the total area of all thin, compacted areas of the spunbonded fabric 30 -60%, preferably 40-45% of the total area and the difference in thickness between compressed and non-compressed areas of the Fleece is at least 25%, preferably 30-50%, and that the spunbond has a tensile strength of 10 to 25 daN, measured on a 5 cm wide strip, for the production of bituminized roofing membranes using a bitumen whose processing temperature is above the melting
  • the bituminized roofing membrane according to the invention is produced by depositing side by side spun, endless load-bearing polyester filaments and binder filaments with a single titer of 1 to 8 dtex to form a random fleece and impregnating it with bitumen in a manner known per se, characterized in that, based on the Total storage, 5 to 20 wt .-% binder filaments with a melting point between 150 ° C and 180 ° C are deposited, that the consolidation of the fleece by calendering at 180-250 ° C with an embossing pattern of statistically distributed or repeat-arranged small-area impressions, preferably is provided with a canvas embossing, in which the pressing surface, ie the total surface of all the embossed, compressed areas of the spunbonded fabric makes up 30-60%, preferably 40-45% of the total area and the difference in thickness between compressed and non-compressed areas of the nonwoven fabric is at least 25% preferably 30-5 Is 0% and that the spunbonded fabric thus obtained is at
  • the melting temperature of the binder and the bituminizing temperature are preferably coordinated with one another such that the melting point of the melting binder is at least 1 ° C., preferably 10 to 30 ° C., below the temperature of the bitumen bath.
  • the spunbonded fabric is impregnated with bitumen by calendering at 180 to 250 ° C on both sides, but preferably on one side with an embossing pattern of statistically distributed or repeat-arranged small-area embossments, preferably with a canvas embossing, in which the pressing surface, i.e.
  • the total area of all embossed, compacted areas of the spunbonded web 30 make up to 60%, preferably 40 to 45% of the total area and the difference in thickness between compacted and non-compacted areas of the nonwoven is at least 25%, preferably 30 to 50%.
  • the carrier web used in the production of a preferred embodiment of the bituminized roofing membrane according to the invention is produced by spinning endless supporting polyester filaments and binder filaments with a single titer of 1 to 8 dtex in a manner known per se are deposited to a random fleece, characterized in that, based on the total deposit, 5 to 20% by weight of binder filaments are deposited, the melting point of which is between 150 and 180 ° C, that the bonding of the fleece by a heat treatment at a temperature between the Melting points of load-bearing filaments and binder filaments occur and that it is provided by calendering at 180-250 ° C.
  • an embossing pattern of statistically distributed or repeat-arranged small-area embossments preferably canvas embossing
  • b ei the pressing area ie the total area of all embossed, compressed areas of the spunbonded web makes up 30-60%, preferably 40-45% of the total area and the difference in thickness between compressed and non-compressed areas of the web is at least 25%, preferably 30-50%.
  • Suitable polyester from which the carrier sheet contained in the bituminized roofing membrane is made are those which have terephthalic acid and ethylene glycol as main components.
  • these polyesters can have further dicarboxylic acid or diol building blocks which modify their properties, such as, for example, residues of isophthalic acid, aliphatic dicarboxylic acid with generally 6 to 10 carbon atoms, sulfoisophthalic acid, residues of longer-chain diols with generally 3 to 8 Carbon atoms, ether diols, for example diglycol or triglycol residues or even small proportions of polyglycol residues.
  • modifying components are generally not more than 15 mol%, preferably not more than 5 mol%, condensed into the polyester.
  • the following exemplary embodiments illustrate the production of a carrier web according to the invention and their use for producing a bituminized roofing membrane according to the invention.
  • the fleece produced on the storage belt is passed through an embossing calender set at a temperature of 210 ° C, which embosses a linen pattern on one side of the fleece.
  • the calender line pressure was 50 daN per cm.
  • the running speed of the fleece through the calender 14 m / min.
  • the carrier web thus obtained had the properties evident from Table 1, Experiment No. 1a. If the line pressure of the calender is increased from 50 daN / cm to 60 daN / cm, the nonwoven properties shown in Table 1, experiment 1b, result. In experiments 1c to 1h, the calender temperature and line pressure of the calender were varied. The results obtained are also shown in Table 1.
  • the fleece created on the storage belt is fed to a temperature calender set at a temperature of 210 ° C, which embosses a linen pattern on one side of the fleece.
  • the calender line pressure was 50 daN per cm.
  • the running speed of the fleece through the calender 14 m / min.
  • the carrier web thus obtained had the properties evident from Table 2, Experiment No. 2a. If the line pressure of the calender is increased from 50 daN / cm to 60 daN / cm, the nonwoven properties shown in Table 2, experiment 2b, result. In experiments 2c to 2h, the calender temperature and line pressure of the calender were varied. The results obtained are also shown in Table 2.
  • the polypropylene-bound and canvas-embossed carrier web produced in Example 1 was applied in a conventional impregnation plant at 170 ° C. with an application of 200 g / m 2 of a polymer-modified bitumen based on SBS (styrene / butadiene / styrene copolymer) and the bitumen web obtained on cooling rolls cooled to about room temperature. According to the bitumen application, the basis weight of the finished web was approx. 300 g / m 2 .
  • a conventional carrier web consisting of a polyethylene terephthalate fleece melt-bonded with 9% by weight of polybutylene terephthalate filaments was impregnated with a basis weight of 100 g / m 2 of the same polymer-modified bitumen.
  • the bituminized roofing membrane according to the invention had a water vapor transmission value, measured according to DIN 52 615, of 8.2 g / m 2 and day, while the roofing membrane made of the spunbonded nonwoven fabric bound by the conventional polybutylene terephthalate only had a water vapor permeability, measured according to DIN 52 615, of 0.7 g / m 2 and day resulted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nonwoven Fabrics (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Polymerisation Methods In General (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Working-Up Tar And Pitch (AREA)
  • Cultivation Of Seaweed (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Road Paving Structures (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Laminated Bodies (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)
  • Joints Allowing Movement (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

There is described a bituminised (bituminous) roofing underfelt (under-roofing felt, sarking, underslating felt) comprising a spunbonded (nonwoven) of polyester, in particular polyethylene terephthalate, filaments having a filament linear density (individual titre) of 1-8 dtex embedded in a bitumen matrix, characterised in that the weight of the bitumen accounts for 40 to 90%, and that of the spunbonded for 10 to 60%, of the basis weight of the roofing underfelt, and in that the spunbonded is consolidated by a meltable binder whose melting point is below the processing temperature of the bitumen used in making the bituminised roofing underfelt and which is present in the spunbonded in a weight proportion from 5 to 20% of the total weight. The spunbonded preferably bears an embossed pattern, for example a plain-weave embossment. There is also described a process for manufacturing the roofing underfelt and the spunbonded present therein.

Description

Die vorliegende Erfindung betrifft eine Dachunterspannbahn mit verbesserter Wasserdampfdurchlässigkeit und eine Trägerbahn für diese Dachunterspannbahn sowie Verfahren zur Herstellung dieser Gegenstände.The present invention relates to a roofing membrane with improved water vapor permeability and a carrier sheet for this roofing membrane as well as methods for producing these objects.

Dachunterspannbahnen werden bekanntlich unter den Ziegel- oder Schieferplatten von Steildächern als Schutz gegen Flugschnee, Spritzwasser, Staub und dergleichen angebracht. Dachunterspannbahnen sollen einerseits wasserundurchlässig und andererseits luft- und dampfdurchlässig sein. Außerdem sollen sie eine hohe Festigkeit, insbesondere eine hohe Weiterreißfestigkeit haben, um zum Beispiel bei einem Unfall das Gewicht des Dachdeckers aufnehmen zu können. Weit verbreitet sind Dachunterspannbahnen aus gitterbewährten Folien. Diese Folien weisen zwar eine gute Reißfestigkeit auf, unbefriedigend bleibt aber die Weiterreißfestigkeit und häufig auch die Dampfdurchlässigkeit.Roofing membranes are known to be installed under the tile or slate of steep roofs as protection against flying snow, splash water, dust and the like. Roofing membranes should on the one hand be impermeable to water and on the other hand permeable to air and steam. In addition, they should have a high strength, in particular a high tear resistance, in order to be able to absorb the weight of the roofer, for example in the event of an accident. Roofing membranes made of lattice-proven foils are widespread. Although these films have good tear strength, the tear resistance and often also the vapor permeability remain unsatisfactory.

In der EP-PS 0027750 wird eine Trägerbahn für eine Dachunterspannbahn beschrieben, die aus einem Faservlies aus Polypropylen, Polyethylen, Polyester oder Polyvinyl besteht und ein Flächengewicht zwischen 85 bis 200 g/m2 aufweist. Zur Herstellung dieser Dachunterspannbahn wird das Faservlies auf einer Seite mit einer Bitumenschicht versehen, indem das Faservlies mit dem Bitumen warm bestrichen und dann einer Abkühlung unterzogen wird um Mikrolöcher oder Mikrorisse hervorzurufen. Die Mikrolöcher oder Mikrorisse dieser bekannten Dachunterspannbahn sollen für eine Verbesserung der Dampfdurchlässigkeit sorgen.EP-PS 0027750 describes a carrier web for a roofing membrane which consists of a nonwoven fabric made of polypropylene, polyethylene, polyester or polyvinyl and has a weight per unit area between 85 to 200 g / m 2 . To produce this roofing membrane, the nonwoven fabric is provided with a bitumen layer on one side by warmly coating the nonwoven fabric with the bitumen and then subjecting it to cooling in order to cause microholes or microcracks. The micro holes or micro cracks in this known roofing membrane are intended to improve the vapor permeability.

Aus der DE-A-40 08 043 ist eine Trägerbahn für Dachunterspannbahnen bekannt, die aus einem Spinnvlies aus Polyester insbesondere Polyethylenterephthalat-Filamenten besteht, wobei das Spinnvlies ein Flächengewicht von 50 bis 100 g/m2, bei einem Einzeltiter der Filamente von 1 bis 8 dtex aufweist und durch einen Schmelzbinder verfestigt ist. Der Schmelzpunkt des Schmelzbinders soll zweckmäßigerweise 10°C, vorzugsweise 30°C unter dem Schmelzpunkt der tragenden Filamente liegen. Nach dieser Druckschrift sind Schmelzbinder, bestehend aus Polyestern, vorzugsweise Polybutylenterephthalat oder modifiziertem Polyethylenterephthalat, besonders gut geeignet. In dieser Druckschrift wird ferner mitgeteilt, daß Trägerbahnen aus Polypropylen das eine Erweichungspunkt von ca. 156°C hat, für die Bituminierung weniger geeignet sind. Die aus dieser Druckschrift bekannte Trägerbahn hat eine Weiterreißfestigkeit von etwa 20 bis 80 N.From DE-A-40 08 043 a carrier web for roofing membranes is known, which consists of a spunbond made of polyester, in particular polyethylene terephthalate filaments, the spunbonded fabric having a basis weight of 50 to 100 g / m 2 , with a single titer of the filaments of 1 to 8 dtex and is solidified by a melt binder. The melting point of the melt binder should advantageously be 10 ° C., preferably 30 ° C. below the melting point of the supporting filaments. According to this publication, melt binders consisting of polyesters, preferably polybutylene terephthalate or modified polyethylene terephthalate, are particularly suitable. In this document it is also stated that carrier webs made of polypropylene, which has a softening point of approximately 156 ° C., are less suitable for bituminization. The carrier web known from this publication has a tear strength of approximately 20 to 80 N.

Aus der EP-A-453 968 ist eine Schalungsbahn bekannt, bestehend aus einem mit einem Beschichtungsmittel wasserdicht ausgerüsteten Spinnvlies aus organischen faserbildenden Materialien, die zumindest auf einer Oberfläche eine Struktur in Form eines Webmusters zur Erhöhung der Rutschfestigkeit aufweist, welches dem Spinnvlies bei dessen Herstellung aufgeprägt wurde.From EP-A-453 968 a formwork web is known, consisting of a spunbonded nonwoven made of organic fiber-forming materials with a coating agent, which has at least on one surface a structure in the form of a weave pattern to increase the slip resistance, which the spunbonded nonwoven during its manufacture was imprinted.

Aus der DE-OS-2,240,860 ist eine bituminierte Bahn aus Bitumen und einem Spinnvlies, das aus Struktur- und Bindefasern besteht bekannt.From DE-OS-2,240,860 a bituminized web of bitumen and a spunbonded web consisting of structural and binding fibers is known.

Aus der DE-OS-3,015,416 sind Spinnvliesstoffe, die neben dem Hauptanteil der Filamente Sonderfilamente oder Sondergarn enthalten, die sich in ihren Eigenschaften von denen der Hauptmenge der Filamente unterscheiden, bekannt. Hinweise, daß diese Spinnvliesstoffe zur Herstellung von Dachunterspannbahnen geeignet sind, sind nicht entnehmbar.DE-OS-3,015,416 discloses spunbonded nonwovens which, in addition to the main proportion of the filaments, contain special filaments or special yarns which differ in their properties from those of the main quantity of the filaments. There is no evidence that these spunbonded nonwovens are suitable for the production of roofing underlays.

Aus der EP-A-0,455,990 sind schmelzbinderverfestigte Spinnvliese bekannt, bei denen der Schmelzpunkt der bindenden Filamente weniger als 30°C unter dem der tragenden Filamente liegt.EP-A-0,455,990 discloses melt-bond-bonded spunbonded nonwovens in which the melting point of the binding filaments is less than 30 ° C. below that of the supporting filaments.

Aus der GB-A-2,198,756 sind schmelzbinderverfestigte Teppichrücken bekannt, die aus Polyethylenterephthalat-Trägerfasern und Polypropylen-Bindefasern bestehen.GB-A-2,198,756 discloses melt-backed carpet backings which consist of polyethylene terephthalate carrier fibers and polypropylene binder fibers.

Die bekannten bituminierten Dachunterspannbahnen haben bei durchweg guten mechanischen Festigkeitseigenschaften noch immer eine nicht völlig befriedigende Wasserdampfdurchlässigkeit. Die vorliegende Erfindung betrifft nun eine bituminierte Dachunterspannbahn die gegenüber bekannten Dachunterspannbahnen eine wesentlich verbesserte Dampfdurchlässigkeit aufweist.The well-known bituminized roofing underlays, with consistently good mechanical strength properties, still have a not completely satisfactory water vapor permeability. The present invention now relates to a bituminized roofing membrane which has a significantly improved vapor permeability compared to known roofing membranes.

Die erfindungsgemäße bituminierte Dachunterspannbahn besteht aus einem in einer Bitumenmatrix eingebetteten Spinnvlies aus Polyester-, insbesondere Polyethylenterephthalat-Filamenten mit einem Einzeltiter von 1-8 dtex, dadurch gekennzeichnet, daß der Gewichtsanteil des Bitumens am Flächengewicht der Dachunterspannbahn 40 bis 90 %, der des Spinnvlieses 10 bis 60 % beträgt, daß das Spinnvlies durch einen Schmelzbinder, dessen Schmelzpunkt 150-180°C beträgt und der in einem Gewichtsanteil von 5 bis 20 % des Gesamtgewichts im Spinnvlies enthalten ist, verfestigt ist und daß das Spinnvlies ein Prägemuster aus statistisch verteilten oder rapportmäßig angeordneten kleinflächigen Einprägungen, vorzugsweise eine Leinwandprägung, aufweist, bei der die Preßfläche, d.h. die Gesamtfläche aller dünnen, verdichteten Stellen des Spinnvlieses 30-60 %, vorzugsweise 40-45% der Gesamtfläche ausmacht und der Dickenunterschied zwischen verdichteten und nicht verdichteten Stellen des Vlieses mindestens 25%, vorzugsweise 30-50% beträgt und daß das Spinnvlies eine Reißkraft von 10 bis 25 daN, gemessen an einem 5cm breiten Streifen, hat.The bituminized roofing membrane according to the invention consists of a spunbonded fabric of polyester, in particular polyethylene terephthalate filaments embedded in a bitumen matrix with a single titer of 1-8 dtex, characterized in that the weight fraction of the bitumen in the basis weight of the roofing membrane is 40 to 90% that of the spunbonded fabric 10 is up to 60% that the spunbonded fabric is consolidated by a melt binder, the melting point of which is 150-180 ° C and which is contained in a weight fraction of 5 to 20% of the total weight in the spunbonded fabric, and that the spunbonded fabric is an embossed pattern of statistically distributed or repeat arranged small-area embossments, preferably a canvas embossing, in which the pressing surface, ie the total area of all thin, compacted areas of the spunbonded fabric makes up 30-60%, preferably 40-45% of the total area and the difference in thickness between compacted and non-compacted areas of the nonwoven fabric s is at least 25%, preferably 30-50% and that the spunbonded fabric has a tensile strength of 10 to 25 daN, measured on a 5 cm wide strip.

Abgesehen von der Bedingung, daß die Verarbeitungstemperatur des Bitumens höher liegt als die Schmelztemperatur des für die Verfestigung des Spinnvlieses eingesetzten Schmelzbinders, kann die Bitumenmatrix der erfindungsgemäßen Dachunterspannbahn aus allen bekannten, für Tränkzwecke geeigneten Bitumenarten, insbesondere auch aus Polymerbitumen bestehen.Apart from the condition that the processing temperature of the bitumen is higher than the melting temperature of the melt binder used to consolidate the spunbonded nonwoven, the bitumen matrix of the roofing membrane according to the invention can consist of all known bitumen types suitable for impregnation purposes, in particular also of polymer bitumen.

Der zur Verfestigung des Spinnvlieses eingesetzte Schmelzbinder hat zweckmäßigerweise eine Schmelztemperatur von 150 bis 180°C. Mit einem derartigen Schmelzbinder läßt sich unter den üblichen Bituminierungsbedingungen und unter Verwendung üblicher Bitumenmassen die o.g. Bedingung realisieren, daß die Imprägnierung mit Bitumen bei einer Temperatur erfolgen soll die oberhalb der Schmelztemperatur des zur Verfestigung des Spinnvlieses eingesetzten Schmelzbinders liegt.The melt binder used to solidify the spunbonded fabric expediently has a melting temperature of 150 to 180 ° C. With such a melt binder, the above-mentioned can be carried out under the usual bituminizing conditions and using the usual bitumen masses Realize the condition that the impregnation with bitumen should take place at a temperature that is above the melting temperature of the melt binder used to solidify the spunbonded nonwoven.

Besonders bevorzugt als Schmelzbinder für das erfindungsgemäß einzusetzende Spinnvlies ist ein Polypropylenschmelzbinder, der mit besonderem Vorteil in Form von Bindefasern in das Spinnvlies inkorporiert wird. Zweckmäßigerweise liegt der Schmelzindex des als Schmelzbinder eingesetzten Polypropylens bei 150 bis 180°C, vorzugsweise bei 155 bis 175°C. Die erfindungsgemäße bituminierte Dachunterspannbahn enthält ein wie oben beschrieben verfestigtes Spinnvlies, das ein Prägemuster aus statistisch verteilen oder rapportmäßig angeordneten, kleinflächigen Einprägungen, vorzugsweise eine Leinwandprägung, aufweist, bei der die Preßfläche, das heißt die Gesamtfläche aller dünnen, verdichteten Stellen des Spinnvlieses 30 bis 60 %, vorzugsweise 40 bis 45 % der Gesamtfläche des Spinnvlieses ausmachen, und der Dickenunterschied zwischen verdichteten und nichtverdichteten Stellen des Vlieses mindestens 25 %, vorzugsweise 30 bis 50 % beträgt.Particularly preferred as a melt binder for the spunbonded fabric to be used according to the invention is a polypropylene meltbinder which is incorporated into the spunbonded fabric with particular advantage in the form of binding fibers. The melt index of the polypropylene used as the melt binder is expediently from 150 to 180 ° C., preferably from 155 to 175 ° C. The bituminized roofing underlayment according to the invention contains a spunbonded nonwoven as described above, which has an embossing pattern of statistically distributed or repeat-arranged small-area embossments, preferably a canvas embossing, in which the pressing surface, i.e. the total area of all thin, compacted areas of the spunbonded nonwoven 30 to 60 %, preferably 40 to 45% of the total area of the spunbonded nonwoven, and the difference in thickness between compacted and non-compacted areas of the nonwoven is at least 25%, preferably 30 to 50%.

Das in der erfindungsgemäßen bituminierten Dachunterspannbahn enthaltene Spinnvlies hat zweckmäßigerweise ein Flächengewicht von 50 bis 250 g/m2, vorzugsweise von 80 bis 120 g/m2, eine Dicke von etwa 0,2 bis 0,6, vorzugsweise von 0,25 bis 0,4 mm und eine Dehnbarkeit von 20 bis 40 %. Die Reißkraft für das in den erfindungsgemäßen bituminierten Dachunterspannbahnen implementierte Spinnvlies, gemessen an einem 5 cm breiten Streifen, liegt bei 10 bis 25 daN.The spunbonded fabric contained in the bituminized roofing membrane according to the invention advantageously has a basis weight of 50 to 250 g / m 2 , preferably from 80 to 120 g / m 2 , a thickness of about 0.2 to 0.6, preferably from 0.25 to 0.4 mm and an extensibility of 20 to 40%. The tensile strength for the spun fleece implemented in the bituminized roofing membrane according to the invention, measured on a 5 cm wide strip, is 10 to 25 daN.

Ein weiterer Gegenstand der vorliegenden Erfindung ist die in der bevorzugten Ausführungsform der erfindungsgemäßen bituminierten Dachunterspannbahn enthaltene Trägerbahn, die aus einem Spinnvlies aus Polyester-, insbesondere Polyethylenterephthalat- Filamenten mit einem Einzeltiter von 1-8 dtex besteht, dadurch gekennzeichnet, daß sie ein Prägemuster aus statistisch verteilten oder rapportmäßig angeordneten kleinflächigen Einprägungen, vorzugsweise eine Leinwandprägung, aufweist bei der die Preßfläche, d.h. die Gesamtfläche aller dünnen, verdichteten Stellen des Spinnvlieses 30-60%, vorzugsweise 40-45% der Gesamtfläche ausmacht und der Dickenunterschied zwischen verdichteten und nicht verdichteten Stellen des Vlieses mindestens 25 %, vorzugsweise 30-50 % beträgt und daß sie durch einen Schmelzbinder, dessen Schmelzpunkt zwischen 150-180°C liegt, und der in einem Gewichtsanteil von 5 bis 20 % des Gesamtgewichts im Spinnvlies enthalten ist, verfestigt ist und daß das Spinnvlies eine Reißkraft von 10 bis 25 daN, gemessen an einem 5cm breiten Streifen, hat.Another object of the present invention is the carrier web contained in the preferred embodiment of the bituminized roofing membrane according to the invention, which consists of a spunbonded fabric made of polyester, in particular polyethylene terephthalate filaments with a single titer of 1-8 dtex, characterized in that it has an embossing pattern from statistical distributed or rapport-arranged small-area impressions, preferably canvas embossing, in which the pressing surface, ie the total area of all thin, compacted areas of the spunbonded fabric makes up 30-60%, preferably 40-45% of the total area and the difference in thickness between compacted and non-compacted areas of the nonwoven fabric is at least 25%, preferably 30-50% and that it is due to a melt binder, whose melting point is between 150-180 ° C, and which is contained in a weight fraction of 5 to 20% of the total weight in the spunbond, is solidified and that the spunbond has a tensile strength of 10 to 25 daN, measured on a 5 cm wide strip.

Es wird angenommen, daß auch das Prägemuster der erfindungsgemäßen Trägerbahn einen Beitrag zu der erhöhten Wasserdampfdurchlässigkeit der erfindungsgemäßen bituminierten Dachunterspannbahn liefert. Dieses Prägemuster, das beim Durchlaufen des Spinnvlieses durch einen beheizten Kalander auf beide Oberflächen des Spinnvlieses, vorzugsweise aber nur auf eine Oberfläche des Spinnvlieses aufgebracht wird, weist eine Vielzahl kleiner Einprägungen auf, die eine Größe von 0,2 bis 40 mm2 haben und durch dazwischen liegende, etwa gleich große, nicht geprägte Flächenelemente des Vlieses voneinander getrennt sind. Ausschlaggebend für die verbesserte Wasserdampfdurchlässigkeit der erfindungsgemäßen bituminierten Dachunterspannbahn ist der Einsatz eines Schmelzbinders für die Verfestigung der Trägerbahn, dessen Schmelzpunkt unterhalb der Temperatur liegt bei der die Bituminierung der Trägerbahn erfolgt. Zweckmäßigerweise wird die Bituminierungstemperatur und die Schmelztemperatur des Schmelzbinders so aufeinander abgestimmt, daß der Schmelzpunkt des Schmelzbinders mindestens 1°C, vorzugsweise 10 bis 30°C unter der Verarbeitungstemperatur des bei der Herstellung der bituminierten Dachunterspannbahn eingesetzten Bitumens liegt.It is assumed that the embossed pattern of the carrier web according to the invention also contributes to the increased water vapor permeability of the bituminized roofing membrane according to the invention. This embossing pattern, which is applied to both surfaces of the spunbonded fabric, but preferably only to one surface of the spunbonded fabric, when it passes through the spunbonded fabric, has a large number of small embossments which have a size of 0.2 to 40 mm 2 and through Intermediate, approximately equal, non-embossed surface elements of the fleece are separated from one another. Decisive for the improved Water vapor permeability of the bituminized roofing membrane according to the invention is the use of a melt binder for strengthening the carrier web, the melting point of which is below the temperature at which the bituminizing of the carrier web takes place. The bituminizing temperature and the melting temperature of the melting binder are expediently coordinated with one another in such a way that the melting point of the melting binder is at least 1 ° C., preferably 10 to 30 ° C., below the processing temperature of the bitumen used in the production of the bituminized roofing membrane.

Ein für die Verfestigung der erfindungsgemäßen Trägerbahn besonders bevorzugter Schmelzbinder besteht aus Polypropylen. Besonders vorteilhaft ist es, diesen Schmelzbinder in Form von Bindefasern in das Spinnvlies der Trägerbahn einzubringen.A melt binder which is particularly preferred for solidifying the carrier web according to the invention consists of polypropylene. It is particularly advantageous to introduce this melt binder in the form of binding fibers into the spunbonded nonwoven of the carrier web.

Die erfindungsgemäße Trägerbahn hat zweckmäßigerweise ein Flächengewicht von 50 bis 250 g/m2, vorzugsweise von 80 bis 120 g/m2 und eine Dicke von 0,2 bis 0,6, vorzugsweise 0,25 bis 0,4 mm. Ihre Reißkraft gemessen an einem 5 cm breiten Streifen liegt bei 10 bis 25 daN und sie weist eine Dehnbarkeit von 20 bis 40 % auf.The carrier web according to the invention advantageously has a weight per unit area of 50 to 250 g / m 2 , preferably 80 to 120 g / m 2 and a thickness of 0.2 to 0.6, preferably 0.25 to 0.4 mm. Its tear strength, measured on a 5 cm wide strip, is 10 to 25 daN and it has an extensibility of 20 to 40%.

Ein weiterer Gegenstand der vorliegenden Erfindung ist die Verwendung der erfindungsgemäßen Trägerbahn bestehend aus einem Spinnvlies aus Polyester-, insbesondere Polyethylenterephthalat-Filamenten mit einem Einzeltiter von 1-8 dtex, das durch einen Schmelzbinder, dessen Schmelzpunkt 150 und 180°C beträgt und der in einem Gewichtsanteil von 5 bis 20 % des Gesamtgewichts im Spinnvlies enthalten ist, verfestigt ist, und ein Prägemuster aus statistisch verteilten oder rapportmäßig angeordneten kleinflächigen Einprägungen, vorzugsweise eine Leinwandprägung, aufweist, bei der die Preßfläche, d.h. die Gesamtfläche aller dünnen, verdichteten Stellen des Spinnvlieses 30-60 %, vorzugsweise 40-45 % der Gesamtfläche ausmacht und der Dickenunterschied zwischen verdichteten und nicht verdichteten Stellen des Vlieses mindestens 25 %, vorzugsweise 30-50 % beträgt, und daß das Spinnvlies eine Reißkraft von 10 bis 25 daN, gemessen an einem 5cm breiten Streifen, hat zur Herstellung von bitumierten Dachunterspannbahnen unter Einsatz eines Bitumens, dessen Verarbeitungstemperatur über dem Schmelzpunkt des Schmelzbinders liegt.Another object of the present invention is the use of the carrier web according to the invention consisting of a spunbond of polyester, in particular polyethylene terephthalate filaments with a single titer of 1-8 dtex, which by a melt binder, the melting point is 150 and 180 ° C and in one The weight fraction of 5 to 20% of the total weight is contained in the spunbonded fabric, is solidified, and has an embossed pattern of statistically distributed or repeat-arranged small-area embossments, preferably a canvas embossing, in which the press area, ie the total area of all thin, compacted areas of the spunbonded fabric 30 -60%, preferably 40-45% of the total area and the difference in thickness between compressed and non-compressed areas of the Fleece is at least 25%, preferably 30-50%, and that the spunbond has a tensile strength of 10 to 25 daN, measured on a 5 cm wide strip, for the production of bituminized roofing membranes using a bitumen whose processing temperature is above the melting point of the melt binder .

Die Herstellung der erfindungsgemäßen bituminierten Dachunterspannbahn erfolgt durch Ablage von nebeneinander ausgesponnenen, endlosen tragenden Polyester-Filamenten und Binderfilamenten mit einem Einzeltiter von 1 bis 8 dtex zu einem Wirrvlies und Imprägnieren desselben mit Bitumen in an sich bekannter Weise, dadurch gekennzeichnet, daß, bezogen auf die Gesamtablage, 5 bis 20 Gew.-% Binderfilamente mit einem Schmelzpunkt zwischen 150°C und 180°C abgelegt werden, daß die Verfestigung des Vlieses durch Kalandrieren bei 180-250°C mit einem Prägemuster aus statistisch verteilten oder rapportmäßig angeordneten kleinflächigen Einprägungen, vorzugsweise mit einer Leinwandprägung, versehen wird, bei der die Preßfläche, d.h. die Gesamtfläche aller eingeprägten, verdichteten Stellen des Spinnvlieses 30-60 %, vorzugsweise 40-45 % der Gesamtfläche ausmacht und der Dickenunterschied zwischen verdichteten und nicht verdichteten Stellen des Vlieses mindestens 25 %, vorzugsweise 30-50% beträgt und daß das so erhaltene Spinnvlies bei einer Temperatur, die oberhalb der Schmelztemperatur der Binderfilamente liegt, mit soviel Bitumen, daß dessen Gewichtsanteil an der fertigen Dachunterspannbahn 40 bis 90 Gew.-% beträgt, vorzugsweise mit 200 bis 1000 g/m2 Bitumen imprägniert wird.The bituminized roofing membrane according to the invention is produced by depositing side by side spun, endless load-bearing polyester filaments and binder filaments with a single titer of 1 to 8 dtex to form a random fleece and impregnating it with bitumen in a manner known per se, characterized in that, based on the Total storage, 5 to 20 wt .-% binder filaments with a melting point between 150 ° C and 180 ° C are deposited, that the consolidation of the fleece by calendering at 180-250 ° C with an embossing pattern of statistically distributed or repeat-arranged small-area impressions, preferably is provided with a canvas embossing, in which the pressing surface, ie the total surface of all the embossed, compressed areas of the spunbonded fabric makes up 30-60%, preferably 40-45% of the total area and the difference in thickness between compressed and non-compressed areas of the nonwoven fabric is at least 25% preferably 30-5 Is 0% and that the spunbonded fabric thus obtained is at a temperature which is above the melting temperature of the binder filaments with so much bitumen that its proportion by weight in the finished roofing membrane is 40 to 90% by weight, preferably 200 to 1000 g / m 2 Bitumen is impregnated.

Vorzugsweise werden die Schmelztemperatur des Binders und die Bituminierungstemperatur so aufeinander abgestimmt, daß der Schmelzpunkt des Schmelzbinders mindestens 1°C, vorzugsweise 10 bis 30°C unter der Temperatur des Bitumenbades liegt. In einer besonders bevorzugten Ausführungsform zur Herstellung der erfindungsgemäßen bituminierten Dachunterspannbahn wird das Spinnvlies vor der Imprägnierung mit Bitumen durch Kalandrieren bei 180 bis 250°C beidseitig, vorzugsweise aber einseitig mit einem Prägemuster aus statistisch verteilten oder rapportmäßig angeordneten, kleinflächigen Einprägungen, vorzugsweise mit einer Leinwandprägung, versehen, bei der die Preßfläche, das heißt die Gesamtfläche aller eingeprägten, verdichteten Stellen des Spinnvlieses 30 bis 60 %, vorzugsweise 40 bis 45 % der Gesamtfläche ausmachen und der Dickenunterschied zwischen verdichteten und nichtverdichteten Stellen des Vlieses mindestens 25 %, vorzugsweise 30 bis 50 % beträgt.The melting temperature of the binder and the bituminizing temperature are preferably coordinated with one another such that the melting point of the melting binder is at least 1 ° C., preferably 10 to 30 ° C., below the temperature of the bitumen bath. In a particularly preferred embodiment for producing the bituminized roofing membrane according to the invention, the spunbonded fabric is impregnated with bitumen by calendering at 180 to 250 ° C on both sides, but preferably on one side with an embossing pattern of statistically distributed or repeat-arranged small-area embossments, preferably with a canvas embossing, in which the pressing surface, i.e. the total area of all embossed, compacted areas of the spunbonded web 30 make up to 60%, preferably 40 to 45% of the total area and the difference in thickness between compacted and non-compacted areas of the nonwoven is at least 25%, preferably 30 to 50%.

Entsprechend den obigen Angaben zur Herstellung der erfindungsgemäßen bituminierten Dachunterspannbahn wird die bei der Herstellung einer bevorzugten Ausführungsform der erfindungsgemäßen bituminierten Dachunterspannbahn eingesetzten Trägerbahn dadurch hergestellt, daß nebeneinander ausgesponnene endlos tragende Polyester-Filamente und Binderfilamente mit einem Einzeltiter von 1 bis 8 dtex in an sich bekannter Weise zu einem Wirrvlies abgelegt werden, dadurch gekennzeichnet, daß, bezogen auf die Gesamtablage, 5 bis 20 Gew.-% Binderfilamente abgelegt werden, deren Schmelzpunkt zwischen 150 und 180°C liegt, daß die Verfestigung des Vlieses durch eine Wärmebehandlung bei einer Temperatur zwischen den Schmelzpunkten von tragenden Filamenten und Binderfilamenten erfolgt und daß es durch Kalandrieren bei 180-250°C mit einem Prägemuster aus statistisch verteilten oder rapportmäßig angeordneten kleinflächigen Einprägungen, vorzugsweise einer Leinwandprägung, versehen wird, bei der die Preßfläche, d.h. die Gesamtfläche aller eingeprägten, verdichteten Stellen des Spinnvlieses 30-60 %, vorzugsweise 40-45 % der Gesamtfläche ausmacht und der Dickenunterschied zwischen verdichteten und nicht verdichteten Stellen des Vlieses mindestens 25 % vorzugsweise 30-50 % beträgt.According to the above information on the production of the bituminized roofing membrane according to the invention, the carrier web used in the production of a preferred embodiment of the bituminized roofing membrane according to the invention is produced by spinning endless supporting polyester filaments and binder filaments with a single titer of 1 to 8 dtex in a manner known per se are deposited to a random fleece, characterized in that, based on the total deposit, 5 to 20% by weight of binder filaments are deposited, the melting point of which is between 150 and 180 ° C, that the bonding of the fleece by a heat treatment at a temperature between the Melting points of load-bearing filaments and binder filaments occur and that it is provided by calendering at 180-250 ° C. with an embossing pattern of statistically distributed or repeat-arranged small-area embossments, preferably canvas embossing, b ei the pressing area, ie the total area of all embossed, compressed areas of the spunbonded web makes up 30-60%, preferably 40-45% of the total area and the difference in thickness between compressed and non-compressed areas of the web is at least 25%, preferably 30-50%.

Als Polyester, aus dem die in der bituminierten Dachunterspannbahn enthaltene Trägerbahn besteht eignen sich solche, die als Hauptkomponenten Terephthalsäure und Ethylenglykol aufweisen. Neben den genannten Grundbausteinen können diese Polyester weitere, ihre Eigenschaften modifizierenden Dicarbonsäure- oder Diolbausteine aufweisen, wie zum Beispiel Reste der Isophthalsäure, aliphatischer Dicarbonsäure mit in der Regel 6 bis 10 Kohlenstoffatomen, der Sulfoisophthalsäure, Reste von längerkettigen Diolen mit in der Regel 3 bis 8 Kohlenstoffatomen, Ätherdiolen, zum Beispiel Diglykol oder Triglykolreste oder auch geringe Anteile von Polyglykolresten. Diese modifizierenden Komponenten sind in der Regel zu nicht mehr als 15 mol%, vorzugsweise zu nicht mehr als 5 mol% in die Polyester einkondensiert. Bevorzugt zur Herstellung der erfindungsgemäßen Trägerbahn und der erfindungsgemäßen bituminierten Dachunterspannbahn werden Spinnvliese aus Fasern, die aus Polyethylenterephthalat mit einem Gehalt von unter 5 mol% modifizierenden Komponenten, insbesondere aber aus reinem unmodifiziertem Polyethylenterephthalat bestehen. Die folgenden Ausführungsbeispiele veranschaulichen die Herstellung einer erfindungsgemäßen Trägerbahn und ihre Verwendung zur Herstellung einer erfindungsgemäßen bituminierten Dachunterspannbahn.Suitable polyester from which the carrier sheet contained in the bituminized roofing membrane is made are those which have terephthalic acid and ethylene glycol as main components. In addition to the basic building blocks mentioned, these polyesters can have further dicarboxylic acid or diol building blocks which modify their properties, such as, for example, residues of isophthalic acid, aliphatic dicarboxylic acid with generally 6 to 10 carbon atoms, sulfoisophthalic acid, residues of longer-chain diols with generally 3 to 8 Carbon atoms, ether diols, for example diglycol or triglycol residues or even small proportions of polyglycol residues. These modifying components are generally not more than 15 mol%, preferably not more than 5 mol%, condensed into the polyester. Spunbonded nonwovens made of fibers which consist of polyethylene terephthalate with a content of less than 5 mol% of modifying components, but in particular of pure unmodified polyethylene terephthalate, are preferred for producing the carrier web according to the invention and the bituminized roofing membrane according to the invention. The following exemplary embodiments illustrate the production of a carrier web according to the invention and their use for producing a bituminized roofing membrane according to the invention.

Beispiel 1example 1

Aus dem Spinnbalken einer Versuchsspinnanlage die mit Spinndüsen für das Ausspinnen von Polyethylenterephthalat und Spinndüsen für das Ausspinnen von Polypropylen bestückt ist, werden 44 g pro Minute Polyethylenterephthalat und 13 g pro Minute Polypropylen ausgesponnen. Der Fadenvorhang wird in einer Injektordüse vorstreckt und über eine rotierende Prallplatte mit nachgeschalteter Leitfläche wirr auf einem Transportband abgelegt, so daß sich ein Vliesgewicht von etwa 98 bis 103 g/m2 ergibt. Entsprechend dem Verhältnis der pro Minute ausgesponnenen Mengen von Polyethylenterephthalat und Polypropylen enthält das Vlies in statistischer Verteilung 9 Gew.-% Polypropylen-Filamente. Das auf dem Ablageband entstandene Vlies wird durch einen auf eine Temperatur von 210°C eingestellten Prägekalander geleitet, der dem Vlies einseitig ein Leinenmuster aufprägt. Der Kalanderliniendruck betrug 50 daN pro cm. Die Durchlaufgeschwindigkeit des Vlieses durch den Kalander 14 m/min.
Die so erhaltene Trägerbahn hatte die aus Tabelle 1, Versuch Nr. 1a ersichtliche Eigenschaften. Wird der Liniendruck des Kalanders von 50 daN/cm auf 60 daN/cm erhöht, so ergeben sich die aus Tabelle 1, Versuch 1b, ersichtlichen Vlieseigenschaften.
In Versuchen 1c bis 1h wurden Kalandertemperatur und Liniendruck des Kalanders variiert. Die dabei erhaltenen Ergebnisse ergeben sich ebenfalls aus der Tabelle 1.

Figure imgb0001
44 g per minute of polyethylene terephthalate and 13 g per minute of polypropylene are spun from the spinning beam of a test spinning plant which is equipped with spinnerets for spinning polyethylene terephthalate and spinnerets for spinning polypropylene. The thread curtain is pre-stretched in an injector nozzle and placed tangled on a conveyor belt over a rotating baffle plate with a downstream guide surface, so that a nonwoven weight of about 98 to 103 g / m 2 results. According to the ratio of the amounts of polyethylene terephthalate and polypropylene spun out per minute, the nonwoven contains 9% by weight of polypropylene filaments in a statistical distribution. The fleece produced on the storage belt is passed through an embossing calender set at a temperature of 210 ° C, which embosses a linen pattern on one side of the fleece. The calender line pressure was 50 daN per cm. The running speed of the fleece through the calender 14 m / min.
The carrier web thus obtained had the properties evident from Table 1, Experiment No. 1a. If the line pressure of the calender is increased from 50 daN / cm to 60 daN / cm, the nonwoven properties shown in Table 1, experiment 1b, result.
In experiments 1c to 1h, the calender temperature and line pressure of the calender were varied. The results obtained are also shown in Table 1.
Figure imgb0001

Beispiel 2Example 2

Aus dem Spinnbalken einer Versuchsspinnanlage die mit Spinndüsen für das Ausspinnen von Polyethylenterephthalat und Spinndüsen für das Ausspinnen von Polypropylen bestückt ist, werden 44 g pro Minute Polyethylenterephthalat und 17 g pro Minute Polypropylen ausgesponnen. Der Fadenvorhang wird in einer Injektordüse vorstreckt und über eine rotierende Prallplatte mit nachgeschalteter Leitfläche wirr auf einem Transportband abgelegt, so daß sich ein Vliesgewicht von etwa 98 bis 103 g/m2 ergibt. Entsprechend dem Verhältnis der pro Minute ausgesponnenen Mengen von Polyethylenterephthalat und Polypropylen enthält das Vlies in statistischer Verteilung 11 Gew.-% Polypropylen-Filamente. Das auf dem Ablageband entstandene Vlies wird auf eine Temperatur von 210°C eingestellten Prägekalander geleitet, der dem Vlies einseitig ein Leinenmuster aufprägt. Der Kalanderliniendruck betrug 50 daN pro cm. Die Durchlaufgeschwindigkeit des Vlieses durch den Kalander 14 m/min. Die so erhaltene Trägerbahn hatte die aus Tabelle 2, Versuch Nr. 2a ersichtliche Eigenschaften. Wird der Liniendruck des Kalanders von 50 daN/cm auf 60 daN/cm erhöht, so ergeben sich die aus Tabelle 2, Versuch 2b, ersichtlichen Vlieseigenschaften.
In Versuchen 2c bis 2h wurden Kalandertemperatur und Liniendruck des Kalanders variiert. Die dabei erhaltenen Ergebnisse ergeben sich ebenfalls aus der Tabelle 2.

Figure imgb0002
44 g per minute of polyethylene terephthalate and 17 g per minute of polypropylene are spun from the spinning beam of a test spinning plant which is equipped with spinnerets for spinning polyethylene terephthalate and spinnerets for spinning polypropylene. The thread curtain is pre-stretched in an injector nozzle and placed tangled on a conveyor belt over a rotating baffle plate with a downstream guide surface, so that a nonwoven weight of about 98 to 103 g / m 2 results. According to the ratio of the amounts of polyethylene terephthalate and polypropylene spun out per minute, the nonwoven contains in statistical distribution 11% by weight of polypropylene filaments. The fleece created on the storage belt is fed to a temperature calender set at a temperature of 210 ° C, which embosses a linen pattern on one side of the fleece. The calender line pressure was 50 daN per cm. The running speed of the fleece through the calender 14 m / min. The carrier web thus obtained had the properties evident from Table 2, Experiment No. 2a. If the line pressure of the calender is increased from 50 daN / cm to 60 daN / cm, the nonwoven properties shown in Table 2, experiment 2b, result.
In experiments 2c to 2h, the calender temperature and line pressure of the calender were varied. The results obtained are also shown in Table 2.
Figure imgb0002

Beispiel 3Example 3

Die in Beispiel 1 hergestellte, polypropylengebundene und mit Leinwandprägung versehene Trägerbahn wurde in einer üblichen Imprägnieranlage bei 170°C mit einem Auftrag von 200 g/m2 eines polymermodifizierten Bitumens auf Basis SBS (Styrol/Butadien/Styrolcopolymer) versehen und die erhaltene Bitumenbahn über Kühlwalzen auf etwa Raumtemperatur gekühlt. Entsprechend dem Bitumauftrag betrug das Flächengewicht der fertigen Bahn ca. 300 g/m2.The polypropylene-bound and canvas-embossed carrier web produced in Example 1 was applied in a conventional impregnation plant at 170 ° C. with an application of 200 g / m 2 of a polymer-modified bitumen based on SBS (styrene / butadiene / styrene copolymer) and the bitumen web obtained on cooling rolls cooled to about room temperature. According to the bitumen application, the basis weight of the finished web was approx. 300 g / m 2 .

Zum Vergleich wurde einer herkömmliche Trägerbahn bestehend aus einem mit 9 Gew.-% Polybutylenterephthalat-Filamenten schmelzgebundenden Polyethylenterephthalat-Vlies mit einem Flächengewicht von 100 g/m2 desgleichen polymermodifizuierten Bitumens imprägniert.For comparison, a conventional carrier web consisting of a polyethylene terephthalate fleece melt-bonded with 9% by weight of polybutylene terephthalate filaments was impregnated with a basis weight of 100 g / m 2 of the same polymer-modified bitumen.

Die erfindungsgemäße bituminierte Dachunterspannbahn hatte einen Wasserdampfdurchgangswert, gemessen nach DIN 52 615, von 8,2 g/m2 und Tag, während die Dachunterspannbahn aus dem herkömmlichen Polybutylenterephthalat gebundenen Spinnvlies nur eine Wasserdampfdurchlässigkeit, gemessen nach DIN 52 615, von 0,7 g/m2 und Tag ergab.The bituminized roofing membrane according to the invention had a water vapor transmission value, measured according to DIN 52 615, of 8.2 g / m 2 and day, while the roofing membrane made of the spunbonded nonwoven fabric bound by the conventional polybutylene terephthalate only had a water vapor permeability, measured according to DIN 52 615, of 0.7 g / m 2 and day resulted.

Claims (17)

  1. A bituminous roofing underfelt comprising a spunbonded of polyester, in particular polyethylene terephthalate, filaments having a filament linear density of 1-8 dtex embedded in a bitumen matrix, characterized in that the weight proportion of the bitumen accounts for from 40 to 90% and that of the spunbonded for from 10 to 60% of the basis weight of the roofing underfelt, in that the spunbonded is consolidated by a meltable binder whose melting point is 150-180°C and which is present in the spunbonded in a weight proportion of from 5 to 20% of the total weight, and in that the spunbonded bears an embossed pattern made up of randomly distributed or regularly repeating small embossments, preferably a plain-weave embossment, in which the pressed area, i.e. the total area of all thin, densified regions of the spunbonded, accounts for 30-60%, preferably 40-45%, of the total area and the thickness difference between densified and nondensified regions of the spunbonded is at least 25%, preferably 30-50% and in that the spunbonded has a breaking strength, measured on a 5 cm wide strip, of 10-25 daN.
  2. The bituminous roofing underfelt of claim 1, characterized in that the meltable binder is polypropylene.
  3. The bituminous roofing underfelt of at least one of claims 1 to 2, characterized in that the meltable binder was used in the form of binder fibers.
  4. The bituminous roofing underfelt of at least one of claims 1 to 3, characterized in that the spunbonded has a basis weight of 50-250 g/m2, preferably 80-120 g/m2.
  5. The bituminous roofing underfelt of at least one of claims 1 to 4, characterized in that the spunbonded has a thickness of from 0.2 to 0.6, preferably 0.25-0.4, mm.
  6. The bituminous roofing underfelt of at least one of claims 1 to 5, characterized in that the spunbonded has an extensibility of 20-40%.
  7. A base felt for bituminous roofing underfelts which comprises a spunbonded of polyester, in particular polyethylene terephthalate, filaments having a filament linear density of 1-8 dtex, characterized in that it bears an embossed pattern made up of randomly distributed or regularly repeating small embossments, preferably a plain-weave embossment, in which the pressed area, i.e. the total area of all thin, densified regions of the spunbonded, accounts for 30-60%, preferably 40-45%, of the total area and the thickness difference between densified and nondensified regions of the spunbonded is at least 25%, preferably 30-50%, and in that it is consolidated by a meltable binder whose melting point is between 150-180°C and which is present in the spunbonded in a weight proportion of from 5 to 20% of the total weight and in that the spunbonded has a breaking strength, measured on a 5 cm wide strip, of 10-25 daN.
  8. The base felt of claim 7, characterized in that the meltable binder is polypropylene.
  9. The base felt of at least one of claims 7 and 8, characterized in that the meltable binder was used in the form of binder fibers.
  10. The base felt of at least one of claims 7 to 9, characterized in that it has a basis weight of 50-250 g/m2, preferably 80-120 g/m2.
  11. The base felt of at least one of claims 7 to 10, characterized in that it has a thickness of from 0.2 to 0.6, preferably 0.25-0.4, mm.
  12. The base felt of at least one of claims 7 to 11, characterized in that it has an extensibility of 20-40%.
  13. The use of a base felt comprising a spunbonded of polyester, in particular polyethylene terephthalate, filaments having a filament linear density of 1-8 dtex consolidated by a meltable binder whose melting point is 150-180°C and which is present in the spunbonded in a weight proportion of from 5 to 20% of the total weight, and which bears an embossed pattern made up of randomly distributed or regularly repeating small embossments, preferably a plain-weave embossment, in which the pressed area, i.e. the total area of all thin, densified regions of the spunbonded, accounts for 30-60%, preferably 40-45%, of the total area and the thickness difference between densified and nondensified regions of the spunbonded is at least 25%, preferably 30-50% and in that the spunbonded has a breaking strength, measured on a 5 cm wide strip, of 10-25 daN, for manufacturing bituminous roofing underfelts using a bitumen whose processing temperature is above the melting point of the meltable binder.
  14. A process for manufacturing the base felt of claim 7 by laying down continuous load-bearing polyester filaments and binder filaments having a filament linear density of 1-8 dtex, which were spun side by side, to form a random web in a conventional manner, characterized in that, based on the total laydown, from 5 to 20% by weight of binder filaments whose melting point is between 150 and 180°C are laid down, in that the web is consolidated by heat treatment at a temperature between the melting points of the load-bearing filaments and binder filaments, and provided by calendering at 180-250°C with an embossed pattern made up of randomly distributed or regularly repeating small embossments, preferably a plain-weave embossment, in which the pressed area, i.e. the total area of all embossed, densified regions of the spunbonded, accounts for 30-60%, preferably 40-45%, of the total area and the thickness difference between densified and nondensified regions of the spunbonded is at least 25%, preferably 30-50%.
  15. A process for manufacturing a bituminous roofing underfelt of claim 1 by laying down continuous load-bearing polyester filaments and binder filaments having a filament linear density of 1-8 dtex, which were spun side by side, to form a random web, subsequently calendering while applying an embossed pattern and impregnating same with bitumen in a conventional manner, characterized in that, based on the total laydown, from 5 to 20% by weight of binder filaments having a melting point between 150°C and 180°C are laid down, the consolidation of the web is provided by calendering at 180-250°C with an embossed pattern made up of randomly distributed or regularly repeating small embossments, preferably a plain-weave embossment, in which the pressed area, i.e. the total area of all embossed, densified regions of the spunbonded, accounts for 30-60%, preferably 40-45%, of the total area and the thickness difference between densified and nondensified regions of the spunbonded is at least 25%, preferably 30-50% and in that the resulting spunbonded is impregnated at a temperature which is above the melting point of the binder filaments with sufficient bitumen for the weight proportion thereof in the ready-manufactured roofing underfelt to be from 40 to 90% by weight, preferably with from 200 to 1000 g/m2 of bitumen.
  16. The process of claim 15, characterized in that the temperature of the bitumen bath in which the impregnation of the carrier spunbonded takes place is from 1 to 30°C above the 150-180°C melting point of the binder filaments.
  17. The process of at least one of claims 14 to 16, characterized in that the filament laydown takes place using a rotating impact plate and a downstream guide surface.
EP93115701A 1992-10-02 1993-09-29 Bituminous under-roofing felt and carrier web Expired - Lifetime EP0590629B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4233204 1992-10-02
DE4233204 1992-10-02

Publications (3)

Publication Number Publication Date
EP0590629A2 EP0590629A2 (en) 1994-04-06
EP0590629A3 EP0590629A3 (en) 1994-09-14
EP0590629B1 true EP0590629B1 (en) 1997-02-12

Family

ID=6469515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93115701A Expired - Lifetime EP0590629B1 (en) 1992-10-02 1993-09-29 Bituminous under-roofing felt and carrier web

Country Status (10)

Country Link
US (1) US5660915A (en)
EP (1) EP0590629B1 (en)
JP (1) JPH06193214A (en)
AT (1) ATE148928T1 (en)
DE (1) DE59305441D1 (en)
DK (1) DK0590629T3 (en)
ES (1) ES2100414T3 (en)
FI (1) FI934301L (en)
GR (1) GR3023170T3 (en)
NO (1) NO933522L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7993427B2 (en) 2007-06-11 2011-08-09 Johns Manville Filter medium
US9931016B2 (en) 2013-10-09 2018-04-03 Owens Corning Intellectual Capital, Llc Dishwasher insulation blanket

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618775A1 (en) * 1996-05-10 1997-11-13 Hoechst Trevira Gmbh & Co Kg Carrier insert, process for its production and its use
DE19620361C5 (en) * 1996-05-10 2004-01-15 Johns Manville International, Inc., Denver Carrier insert and its use
US9044921B2 (en) 2005-09-07 2015-06-02 Certainteed Corporation Solar heat reflective roofing membrane and process for making the same
DE202006021073U1 (en) 2006-12-20 2012-04-30 Johns Manville Europe Gmbh Backing insert and its use
DE102006060241A1 (en) * 2006-12-20 2008-06-26 Johns Manville Europe Gmbh Supporting layer, useful in composite roofing or sealing sheets, is obtained by hydrodynamic consolidation of textile sheet containing reinforcement structure
DE102007008424A1 (en) 2007-02-21 2008-08-28 Johns Manville Europe Gmbh Composite construction material, useful e.g. in furniture or wall coverings, is obtained by laminating textile sheet, containing B-stage binder and functional material, with support
DE102007028531A1 (en) 2007-06-18 2008-12-24 Johns Manville Europe Gmbh Manufacturing composite material, useful as construction material e.g. furniture, comprises supplying carrier, applying textile surface structure onto surface of carrier, laminating construction, and optionally applying protective layer
DE102007008423A1 (en) 2007-02-21 2008-08-28 Johns Manville Europe Gmbh Making composite for use e.g. in furniture or floor covering, involves applying textile sheet containing a B-stage binder to one side of a support, applying functional material to the textile and then curing the binder
DE102007012651A1 (en) 2007-03-16 2008-09-18 Johns Manville Europe Gmbh Manufacturing composite material, useful as construction material e.g. furniture, comprises supplying carrier, applying textile surface structure onto surface of carrier, laminating construction, and optionally applying protective layer
DE102007060494A1 (en) 2007-12-14 2009-06-18 Johns Manville Europe Gmbh Backing insert, process for their preparation and their use
DE202008010258U1 (en) 2008-07-30 2008-10-30 Johns Manville, Denver Reinforcement insert and coated roofing membranes
DE202008017741U1 (en) 2008-10-11 2010-05-12 Trevira Gmbh Superabsorbent bicomponent fiber
DE102008059128A1 (en) 2008-11-26 2010-05-27 Johns Manville Europe Gmbh Binder-solidified textile fabric, process for its production and its use
DE102008059129A1 (en) 2008-11-26 2010-05-27 Johns Manville Europe Gmbh Binder-solidified textile fabric, process for its production and its use
DE102009004970A1 (en) 2009-01-14 2010-07-15 Johns Manville Europe Gmbh Mineral coated textile surfaces for wood-based materials
DE102009004573A1 (en) 2009-01-14 2010-07-15 Johns Manville Europe Gmbh Concrete formwork, process for their production and their use
DE202009000539U1 (en) 2009-01-14 2009-04-02 Johns Manville Europe Gmbh Mineral coated textile surfaces for wood-based materials
DE202009000393U1 (en) 2009-01-14 2009-03-19 Johns Manville Europe Gmbh concrete formwork
DE102009005587A1 (en) 2009-01-21 2010-07-22 Johns Manville Europe Gmbh Method for determining reference force of e.g. spunbonded fabric, utilized as carrier insert for producing roofing sheet, involves comparing reinforced planar structure exhibiting reference force with planar structure without reinforcement
DE102009022120B4 (en) 2009-05-20 2021-10-21 Johns Manville Europe Gmbh Multi-layer filter medium, method for its production and its use in air / gas and liquid filtration, as well as filter modules containing the multi-layer filter medium
DE102009023737A1 (en) 2009-06-03 2010-12-09 Johns Manville Europe Gmbh Composite material useful as construction material to manufacture furniture and wall, ceiling and floor coverings, comprises carrier, and textile surface structure, which is laminated on one of the two sides of the carrier and has binder
US20100310838A1 (en) 2009-06-03 2010-12-09 Michael Ketzer Printing of non-woven fabrics and their use in composite materials
CA2774624C (en) 2009-10-08 2014-07-08 Johns Manville Binder compositions comprising at least one b-stage binder and at least one emulsion
EP2309046B1 (en) 2009-10-08 2017-08-30 Johns Manville Multilayer fabric materials for roofing applications
DE102011121136A1 (en) 2011-12-15 2013-06-20 Johns Manville Europe Gmbh Multi-layer filter medium
DE102011121589A1 (en) 2011-12-20 2013-06-20 Johns Manville Europe Gmbh Binder-solidified textile fabric, process for its production and its use
DE102012025023A1 (en) 2012-12-20 2014-06-26 Johns Manville Europe Gmbh filter media
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
DE102014010332A1 (en) 2014-07-14 2016-01-14 Johns Manville Europe Gmbh Composite materials comprising honeycomb cores based on thermoplastic synthetic fiber webs
PL3086384T3 (en) 2015-04-23 2018-03-30 Johns Manville Europe Gmbh Tubular bags of the cartridge belt type for lead-acid batteries made from a textile sheet fabric
DE102016015248A1 (en) 2016-12-21 2018-06-21 Johns Manville Europe Gmbh Highly efficient filter medium
US20210031129A1 (en) * 2019-07-31 2021-02-04 Johns Manville Cleanable filter medium
KR102261240B1 (en) * 2020-12-11 2021-06-08 이에스지산업 주식회사 Asphalt modifier material for asphalt mixtures and asphalt mixtures comprising the same
EP4303353A1 (en) 2022-07-05 2024-01-10 Johns Manville Nonwoven material with improved md/cd ratio, method for its manufacture and its use
US20250154763A1 (en) 2023-11-15 2025-05-15 Johns Manville Nonwoven with new thermoplastic binder
EP4574231A1 (en) 2023-12-18 2025-06-25 Johns Manville Europe GmbH Filter material and method for providing a filter material

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2240860A1 (en) * 1972-08-19 1974-02-28 Lutravil Spinnvlies Fibre-reinforced bitumen or bitumen/polyolefine sheets - contg thermo-plastic, esp polyamide or polyolefine fibres, with no coating or bonding agent
DE2526749C2 (en) * 1975-06-14 1979-01-04 Hoechst Ag, 6000 Frankfurt Process for the production of flame-retardant polybutylene terephthalate
FR2467934A1 (en) * 1979-10-18 1981-04-30 Siplast Soc Nouvelle SUB-ROOF MATERIAL
DE3015416A1 (en) * 1980-04-22 1981-11-05 Hoechst Ag, 6000 Frankfurt Spun filament felting - has even distribution of added filaments-yarns of different type
DE3642089A1 (en) * 1986-12-10 1988-06-23 Freudenberg Carl Fa TEXTILE TUBE CARRIER MADE OF MESH FABRIC
DE3831271A1 (en) * 1988-09-14 1990-03-15 Hoechst Ag CARRIER RAIL FOR ROOF COVERING
EP0414141B1 (en) * 1989-08-21 1993-12-22 Hoechst Aktiengesellschaft Melt-binder-strengthened spin-fleece
DE4008043A1 (en) * 1990-03-14 1991-09-19 Hoechst Ag TRAILER RAIL FOR ROOF TENSION RAILWAYS
DE4011479A1 (en) * 1990-04-09 1991-10-10 Hoechst Ag THERMALLY STABLE, MELTBinder-strengthened spunbonded nonwoven
DE4012718A1 (en) * 1990-04-21 1991-10-24 Hoechst Ag FORMWORK

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7993427B2 (en) 2007-06-11 2011-08-09 Johns Manville Filter medium
US9931016B2 (en) 2013-10-09 2018-04-03 Owens Corning Intellectual Capital, Llc Dishwasher insulation blanket

Also Published As

Publication number Publication date
ATE148928T1 (en) 1997-02-15
JPH06193214A (en) 1994-07-12
GR3023170T3 (en) 1997-07-30
FI934301A7 (en) 1994-04-03
DE59305441D1 (en) 1997-03-27
EP0590629A3 (en) 1994-09-14
EP0590629A2 (en) 1994-04-06
US5660915A (en) 1997-08-26
NO933522L (en) 1994-04-05
FI934301A0 (en) 1993-09-30
ES2100414T3 (en) 1997-06-16
FI934301L (en) 1994-04-03
DK0590629T3 (en) 1997-08-18
NO933522D0 (en) 1993-10-01

Similar Documents

Publication Publication Date Title
EP0590629B1 (en) Bituminous under-roofing felt and carrier web
EP0446822B1 (en) Support web for roof foundation webs
EP0806509B2 (en) Lining material, process for its manufacture and its use
EP0572891B1 (en) Non-woven sheet and saim
EP1939342B1 (en) Reinforcements, method for their manufacture and application thereof
DE19531001A1 (en) Textile composite, process for its production, its use and scrims containing mixed yarns
DE19620361C5 (en) Carrier insert and its use
DE69203659T2 (en) Needled flooring.
DE202008010258U1 (en) Reinforcement insert and coated roofing membranes
EP0603633A1 (en) Three-component laminate
AT390986B (en) SEALING MEMBRANE AND METHOD FOR THEIR PRODUCTION
EP0359165B1 (en) Supporting web for sheets spread under a roof
AT405533B (en) DOUBLE-LAYER NEEDLE FILLED
DE60005527T2 (en) HYDRODYNAMICALLY GROUNDED CARRIER RAILS AND THEIR USE
DE19950057B4 (en) Two-ply or multi-ply fabrics of polyester filament webs and fiberglass webs or plies
EP0812943A2 (en) Textile web for use as an inner layer of a mould for concrete
DE19935531C2 (en) Two-layer laminate
DE19952432B4 (en) laminate
DE19935408A1 (en) Two or three layer laminates of synthetic non-woven fabric and woven glass fabric or scrim, for use in bituminized roofing webs and sealing membranes, in which the layers are bonded by needling and consolidated with a binder
DE2814452A1 (en) Process for the production of bonded non-woven webs
DE202006021073U1 (en) Backing insert and its use
DE9313329U1 (en) Textured non-woven fabric made of synthetic fibers
DE29602908U1 (en) Bituminized roofing membrane and carrier sheet
DE29608372U1 (en) Carrier insert
DE9318032U1 (en) Textured non-woven fabric made of synthetic fibers

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19940829

17Q First examination report despatched

Effective date: 19941028

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

REF Corresponds to:

Ref document number: 148928

Country of ref document: AT

Date of ref document: 19970215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59305441

Country of ref document: DE

Date of ref document: 19970327

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: 72035

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970418

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2100414

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3023170

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 19970430

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 19970826

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: MC

Payment date: 19971024

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19971211

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19980923

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980929

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990930

BECA Be: change of holder's address

Free format text: 19991007 *JOHNS MANVILLE INTERNATIONAL INC.:717 SEVENTEENTH STREET, DENVER COLORADO 80202

REG Reference to a national code

Ref country code: PT

Ref legal event code: PC4A

Free format text: JOHNS MANVILLE INTERNATIONAL, INC. US

Effective date: 19990927

NLS Nl: assignments of ep-patents

Owner name: JOHNS MANVILLE INTERNATIONAL, INC.

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: HOECHST AKTIENGESELLSCHAFT TRANSFER- JOHNS MANVILL

Ref country code: CH

Ref legal event code: NV

Representative=s name: DIPL.-ING. ETH H. R. WERFFELI PATENTANWALT

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20100927

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20100927

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20100903

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20110926

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20110901

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20110927

Year of fee payment: 19

Ref country code: BE

Payment date: 20110927

Year of fee payment: 19

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20120329

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 59305441

Country of ref document: DE

Representative=s name: MAI DOERR BESIER PATENTANWAELTE, DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120329

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110929

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20120927

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20121001

Year of fee payment: 20

Ref country code: IT

Payment date: 20120924

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120927

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20120924

Year of fee payment: 20

BERE Be: lapsed

Owner name: *JOHNS MANVILLE INTERNATIONAL INC.

Effective date: 20120930

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 148928

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120929

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20130531

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120929

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120930

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110930

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120930

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59305441

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: V4

Effective date: 20130929

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20131001