AU621379B2 - Multilayered carrier web - Google Patents

Multilayered carrier web Download PDF

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Publication number
AU621379B2
AU621379B2 AU36656/89A AU3665689A AU621379B2 AU 621379 B2 AU621379 B2 AU 621379B2 AU 36656/89 A AU36656/89 A AU 36656/89A AU 3665689 A AU3665689 A AU 3665689A AU 621379 B2 AU621379 B2 AU 621379B2
Authority
AU
Australia
Prior art keywords
carrier web
basis weight
layers
metal foil
support layer
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.)
Ceased
Application number
AU36656/89A
Other versions
AU3665689A (en
Inventor
Franz Kaulich
Hans Wagner
Bertrand Claude Weiter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
Original Assignee
Hoechst AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of AU3665689A publication Critical patent/AU3665689A/en
Application granted granted Critical
Publication of AU621379B2 publication Critical patent/AU621379B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/10—Fibres of continuous length
    • B32B2305/20—Fibres of continuous length in the form of a non-woven mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00—Buildings or parts thereof
    • B32B2419/06—Roofs, roof membranes

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Dental Preparations (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Nonwoven Fabrics (AREA)
  • Instructional Devices (AREA)
  • Image Generation (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Materials For Medical Uses (AREA)

Abstract

Multilayered, preferably three-layered, sheet of textile layers and a metal foil, which has a) a thicker textile sheet-like structure as a supporting layer, b) a metal foil bonded thereto and c) a thinner textile sheet-like structure bonded thereto as a top layer. <IMAGE>

Description

Applicant (s) 0o' Seal of Comipany and Sign.ature, vg Its Officers as preserltbed by Its Articl es of Assocation.
21 ~by D.B. Mischlewski Regi-stered -Paten. Attoy ney TIiE COMMI'SSTONW or, Pi-rrMtev Form COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952-69 COMPLETE SPECIFICATION (O.2RIG INAL) Class Int. Class Application Number: Lodged: Complete Specification Lodged: Accepted: Published: sPriority Rt Wated Art: Narpe of Applicant: HOE~CHST AKTIEESELLSCHAIT 50 Bruningstrassc, D-6230 Frankfurt/Main Address of Applicant: Germ~any 80, Federal Republic of A1~ual Inventor: BERTRAND CIAUDE WEITFR, HANS WAGNER and FRANZ KAIJLICH X0aVMffnS1 Watermark Pat,:nt Trademark Attorneys 50 QUEEN STREET, MELBOURNE, AUSTRALIA, 3000.
Address for Service:.
Complete Specification for the Invcntlork entitled: M1JTLtAYERED CARR[ER WEB The following statement Is a full desription of this Invention, Including the best mettod of performing It known to us I
I
PAT 510 Prokurit Authorized Signatry Sppa. Tergau i.V. Lapice i HOECHST AKTIENGESELLSCHAFT HOE 88/F 157 Dr. VA/rh Description Multilayered carrier web The present invention relates to a multilayered carrier web comprising two layers of textile sheet materials and a metal layer in between, which is suitable in particular for manufacturing roofing and covering membranes.
Carrier webs comprising a combination of a textile web with a metal foil are already known and are widely used for manufacturing bituminized roofing membranes which, under German Standard Specification DIN 4102, must be get tresistant to jump fire and radiative heat. Such a carrier web is obtained for example in DE-C-2,827,136 by bonding a metal foil locally to a web of shrinkable filaments and then making the web shrink.
US-A-3,415,713 likewise discloses a three-layer material consisting of two web layers and a layer of a plurality of small metal platelets in between. However, this multilayer material is not suitable for manufacturing jump fire resistant roofing membranes since the incorporated metal platelets do not effectively conduct away locally applied heat.
DE-B-2,611,740 discloses a carpet underlay consisting of a textile base material, a metal foil and a fibrous web as top layer. The three layers are needled together from the top layer side with about 120 to 190 stitches per cm 2 The web material used for manufacturing this known multilayer material comprises staple fiber webs having a fiber length of 12 to 150 mm, and the top layer and textile base layer of this known multilayer material have approximately the same basis weight. According to this publication, the metal foil confers flame resistance on the carpet underlay thus manufactured and prevents electrostatic charge buildups. It is surprisingly found that even this known multilayer web is not suitable for manufacturing bitumen membranes since it does not improve
ZI
2 their fire resistance but on t*e contrary makes it worse.
The two-layer materials of textile layer and metal foil which are known for manufacturing bitumen membranes have the disadvantage of requiring more careful handling during transport to the next processor and in the coating with bitumen than simple nonwoven webs in order not :.o damage the thin metal foil. Furthermore, frequently there are problems with the adhesion of the bitumen, not only in the course of the impregnation with the bitumen but also later in the course of laying onto the surfaces to be covered.
o e o a0 S' The object of the present invention then is a carrier S. web, in particular for manufacturing bituminized roofing membranes, which does not have the prior art disadvani o.15 tages, which is easier to handle, which has a much less Ssensitive surface, and which shois much better bitumen adhesion.
4't.
The multilayered carrier web according to the invention contains S' ?20 a) a comparatively thick textile sheet material as support layer, b) a metal foil bonded thereto and c) bonded thereto a comparatively thin textile sheet material as top layer.
The three layers a) to c) together have a basis weight of 100 to 600, referably 150 to 400, g/m Here, as well as in the following specification and claims the term "basis weight" means the weight per unit area.
As well as the three layers named a) to the carrier web according to the invention may additionally contain further layers, for example adhesive layers, for bonding the three layers mentioned together, or else further protective and top layers of textile mater;als or for example Raschel goods from monofilaments or the like.
Preferably, however, the carrier web according to the S invention consists of the abovementioned three layers a) 1 1 3 -3to The textile sheet materials present in the carrier V web according to the invention can be woven fabrics, knitted fabrics, laid fabrics or preferably nonwoven fabrics. It is preferred in particular for at least one of the textile sheet materials to consist of a nonwoven fabric. Particular preference is given to those carrier webs according to the invention where the two textile sheet materials are nonwoven fabrics.
i Suitable fiber materials for the textile sheet materials i 10 are basically natural fibers, for example cellulose or wool fibers, or else synthetic fibers having a melting Spoint of at least 180 to 200°C. Preference is given to i synthetic fibers made of polyamide, polyacrylonitrile and in particular polyesters. The polyamide and polyester fibers which are preferred are those which have a very high melting point, so that particularly advantageous polyamide fibers are for example aramid fibers. Preferred i polyester fibers likewise consist of polyesters contain- S ing a high proportion of aromatic units. Particular preference is given to filaments of polyethylene terephthalate, in particular ethylene terephthalate modified by the addition of known flame-retardant agents such as, for example, Sb 2 03 or by incorporation of flammability-reducing chain constituents. Known chain constituents which reduce the flammability of polymers are for example phosphorus-containing constituents derived fXom diols, dicarboxylic acids or hydroxycarboxylic acids or acids of phosphorus and derivatives thereof, in particular chain i iconstituents derived from phosphonic and phosphini.c.
acids. Polyesters which have been made flame-resistant in this manner by means of phosphorus-containing constituents are described for example in DE-B-1,243,819 and DE-A-1,520,079 and -1,595,598. Particularly preferred low-flammability polyesters are for example those of DE-C-2,346,787, in particular those having a chain constituent of the formula 4 0
II
-0-P-CH -CH -C- 2 2 11
CH
3 0 The synthetic fibers can be present either in the form of endless filaments or, alternatively, in the form of staple fibers in the textile sheet materials of the carrier web according to the invention. Preference is given to endless fibers, and particularly preferred textile sheet materials are accordingly spunbondeds formed by laying freshly spun filaments directly in ideal S:t randomness onto a moving surface.
6* S* An essential criterion of the carrier web according to 10 the invention is the weight distribution between the individual layers. The thicker textile sheet material, ,geroresupport layer accounts for 50 to 90%, preferably to 80%, of the total weight of the carrier web. Accordingly, it is preferable to use support layers having a basis weight of 50 to 540, preferably 90 to 320, g/m 2 The basis weight of metal foil b) is ideally kept to a minimum and is preferably from 5 to 25% of the total basis weight of the carrier web. Accordingly, metal foils having a basis weight of 5 to 150, preferably 7.5 to 100, g/m 2 are used.
The thinner textile sheet material of the carrier web according to the invention, top layer has a basis weight of about 5 to 25%, preferably 10 to 15%, of the total basis weight of the carrier web according to the invention. Accordingly, the top layer used is a textile sheet material hav.ing a weight of 5 to 120, preferably to 60, g/m 2 The three layers a) to c) are joined together in a known 1 manner, for example by uniform or partial adhesive bonding or, preferably, by needling, advantageously with to 100 stitches per cm 2 The joining together by needling is preferred in particular when at least one of the textile sheet materials of the carrier web according I to the invention consists of a nonwoven fabric. In this case, the binding filaments responsible for holding the Ii multilayer material together come from the nonwoven layer. It is particularly preferred in this case if the thicker textile sheet material, the support layer, consists of the nonwoven fabric, and the binding filai ments accordingly extend from the support layer through !i the entire multilayer material.
The textile sheet materials, in particular the nonwoven fabrics of the carrier web according to the invention can Iadditionally be bonded by means of known binders. Such binders are for example synthetic resin dispersions, in i particular dispersions of thermosetting plastics or I air« polymer latices.
a j! 20 The carrier web accordin to the invention is manufaci tured in a conventional m;iner by bringing together the materials of the three layers, namely the support layer, rI the metal foil and the top layer, and adhesively bonding them to one another either partially or uniformly by means of applied adhesive, or by needling them together with 30 to 100 stitches per cm 2 after they have been (I brought together. Needling is the preferred technique i, |when, as is preferred, at least one of the textile sheet matei:ials is a nonwoven fabric. In the case of the particularly preferred use of nonwoven fabrics not only for the support layer but also for the top layer, needling takes place from the support layer side, so that filaments from the support layer are pulled through the entire three-layer material and hold it together as binding filaments. The thickness of the textile sheet materials brought together with the metal foil is selected in accordance with the above-specified criteria.
I I I C- 6 After the three layers have been bonded together adhesively or by needling, the textile materials, in particular the web materials, may be additionally consolidated by binding with binders known per se. These binders, for example dispersions of synthetic resins, in particular thermosetting plastics, or else latex dispersions can be applied to the sheet materials in a conventional manner, for example by brushing, dipping or spraying.
0 0 00 J 0 00 *oe a 00 9Q 0 0""015 0 C0 *0 a 6 0 *o o 0 0 9 1o O The joining together of the brought-together layers of the multilayered carrier web according to the invention can also be effected for example by introducing additional layers of hot-melt adhesives consisting for example of a Raschel material produced from adhesive fibers. If a hot-melt adhesive is used its melting point must of course be adjusted in such a way as to match the melting point of the filaments of the textile sheet materials. This means that the hot-melt adhesive must soften at not less than 20 to 30 0 C below the melting point of the filamen s in order to bring about bonding.
If the multilayered carrier web according to the invention is to comprise further layers, for example stabilizing layers of monofilaments or the like, these can likewise be brought together wich the three layers a) to c) and be joined thereto in a conventional manner by adhesive bonding or by needling.
The top layer of the carrier web according to the invention prevents damage to the metal foil during winding, packaging and transport. As a result, the metal foil remains intact over the entire area of the carrier web and thus can act as a fire protection sheet.
The carrier web according to the invention also benefits through its top layer from a distinct improvement in bitumen adhesion, as can be demonstrated by measuring the -r 7 peel strength. The improved bitumen adhesion in addition gives improved heat distortion resistance and a further improvement in cold bending characteristics.
If the bituminized roofing membrane is installed with the top layer facing upward, the metal foil protects the support layer from jump fire and radiative heat. If the roofing membrane is installed with the support layer facing upward, the metal foil protects the support layer of the roofing membrane from excess heat in the event of incorrect handling.
4 0 0" 0 oboe 0 4, o o 0 00 0

Claims (12)

1. A multilayered carrier web comprising textile layers and a metal foil, containing a) a textile sheet material as support layer, b) a metal foil bonded thereto and I c) bonded thereto a textile sheet as top layer, wherein the basis weight of the support layer accounts for 50 to 90% of the total basis weight of the carrier web and the basis weight of the top layer accounts for 5 to 25% of 8 the total basis weight of the carrier web.
2. The carrier web as claimed in claim 1, having a total basis weight of 100 to 600 S. g/m 2 t* q re
3. The carrier web as claimed In either of claims 1 and 2, which is three-layered S* and consists of layers a) to c), i
4. The carrier web as claimed in at least one of claims 1 to 3, wherein at least the support layer s a nonwoven fabric, The carrier web as claimed in at least one of claims 1 to 4, wherein the textile sheet materials consist of polyester filaments or fibers.
S"is
6, The carrier web as claimed in at least one of claims 1 to 5, wherein the basis weight of the metal foil accounts for 5 to 25% of the total basis weight of the carrier web,
7, The carrier web as claimed In at least one of claims 1 to 6, wherein the layers a) Ito c) have been joined together in a conventional manner by uniform or partial adhesive bonding or by needling with 30 to 100 stitches per cm 2
8, The carrier web as claimed In at least one of claims 1 to 7, wherein the textile sheet materials are additionally consolidated by means of known bindirs,
9. A process for manufacturing a carrier web as claimed in claim 1 from textile layers and a metal foil, which comprises bringing together a) a textile sheet material as support layer, b) a meta foil and c) a textile sheet material as a top layer wherein the total of the basis weights of the brought-together materials and is 100 to 600 g/m 2 and the basis weight of the support layer a) is 50 to 90%, the basis weight of the metal foil b) is 5 to 25% and the basis weight of the top layer c) Ia 5 to of this total weight, and joining them together in a conventional manner by adhesive bonding or needling. I 4 4
10. The process as claimed in claim 9, whereir the brought-together sheet materials are needled together and the needling takes place from the support layer side. i S,
11. The process as claimed In any one of claims 9 to 10, wherein the needling Is Seffected with 30 to 100 stitches per cm 2
12. The process as claimed In at least one of claims 9 to 11, wherein, after the three layers of the three layered carrier web have been bonded together, the three layored carrier w Is additionally bonded with a known binder applied thereto, i4r S13. The use of the multkiyered carrier web of claim 1 for manufacturing i bituminized roofing or covering membranes, 14, A roofing or covering membrane comprising a bituminized, multilayered carrier web of claim 1, DATED this 11th day of December, 1991. HECHST ATI ESELLSCHAF WATERMARK PATENT TRADEMARK ATTORNEYS THE ATRIUM 290 BURWOOD ROAD HAWTHORN VICTORIA 3122 AUSTRAUA AU003665689,WPC
AU36656/89A 1988-06-22 1989-06-21 Multilayered carrier web Ceased AU621379B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3821011 1988-06-22
DE3821011A DE3821011A1 (en) 1988-06-22 1988-06-22 MULTI-LAYER CARRIER

Publications (2)

Publication Number Publication Date
AU3665689A AU3665689A (en) 1990-01-04
AU621379B2 true AU621379B2 (en) 1992-03-12

Family

ID=6356975

Family Applications (1)

Application Number Title Priority Date Filing Date
AU36656/89A Ceased AU621379B2 (en) 1988-06-22 1989-06-21 Multilayered carrier web

Country Status (8)

Country Link
EP (1) EP0347795B1 (en)
JP (1) JPH0245143A (en)
AT (1) ATE132805T1 (en)
AU (1) AU621379B2 (en)
DE (2) DE3821011A1 (en)
FI (1) FI893023A (en)
NO (1) NO892566L (en)
ZA (1) ZA894701B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9207367U1 (en) * 1992-05-30 1992-09-10 Hoechst Ag, 6230 Frankfurt, De
DE9217045U1 (en) * 1992-12-15 1993-05-13 Hoechst Ag, 6230 Frankfurt, De
DE4344707A1 (en) * 1993-12-27 1995-06-29 Hoechst Ag Root-resistant support insert
DE4420613C1 (en) * 1994-06-13 1995-08-10 Freudenberg Carl Fa Burn-through barrier for aircraft fuselages
GB9520135D0 (en) * 1995-10-03 1995-12-06 Flaxall Prod Ltd Composite material
DE60314345D1 (en) † 2002-09-21 2007-07-26 Don & Low Ltd Liquid impermeable and vapor / gas permeable textile product

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4808465A (en) * 1986-11-20 1989-02-28 Vane Jeffrey A Composite material

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB300531A (en) * 1927-08-11 1928-11-12 Ralph Shaw Improvements in and relating to structural roofing and like materials
SE344345B (en) * 1963-08-12 1972-04-10 Svenska Icopalfabriken Ab
GB1408417A (en) * 1972-12-11 1975-10-01 Bpb Industries Ltd Bituminous material
DE2827136C2 (en) * 1978-06-21 1982-05-19 Hoechst Ag, 6000 Frankfurt Bituminized roofing membrane
DE3166337D1 (en) * 1980-09-01 1984-10-31 Ciba Geigy Ag Process for making rigid shaped articles
AU7298387A (en) * 1986-05-21 1987-11-26 Minnesota Mining And Manufacturing Company Laser shield

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4808465A (en) * 1986-11-20 1989-02-28 Vane Jeffrey A Composite material

Also Published As

Publication number Publication date
EP0347795B1 (en) 1996-01-10
JPH0245143A (en) 1990-02-15
FI893023A (en) 1989-12-23
NO892566L (en) 1989-12-27
DE3821011A1 (en) 1989-12-28
ATE132805T1 (en) 1996-01-15
DE58909566D1 (en) 1996-02-22
FI893023A0 (en) 1989-06-20
AU3665689A (en) 1990-01-04
ZA894701B (en) 1991-04-24
NO892566D0 (en) 1989-06-21
EP0347795A3 (en) 1990-09-26
EP0347795A2 (en) 1989-12-27

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