EP0903435A2 - Membrane d'étanchéité et procédé pour sa fabrication - Google Patents

Membrane d'étanchéité et procédé pour sa fabrication Download PDF

Info

Publication number
EP0903435A2
EP0903435A2 EP98117400A EP98117400A EP0903435A2 EP 0903435 A2 EP0903435 A2 EP 0903435A2 EP 98117400 A EP98117400 A EP 98117400A EP 98117400 A EP98117400 A EP 98117400A EP 0903435 A2 EP0903435 A2 EP 0903435A2
Authority
EP
European Patent Office
Prior art keywords
waterproofing
core
compatibility
enhancing
membrane
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.)
Granted
Application number
EP98117400A
Other languages
German (de)
English (en)
Other versions
EP0903435A3 (fr
EP0903435B1 (fr
Inventor
Giorgio Pasetto
Giuseppe Modena
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.)
Pluvitec SpA
Original Assignee
Pluvitec SpA
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 Pluvitec SpA filed Critical Pluvitec SpA
Publication of EP0903435A2 publication Critical patent/EP0903435A2/fr
Publication of EP0903435A3 publication Critical patent/EP0903435A3/fr
Application granted granted Critical
Publication of EP0903435B1 publication Critical patent/EP0903435B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N5/00—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material

Definitions

  • This invention relates to a bitumen-polymer-based waterproofing membrane which is particularly suitable for the protection of buildings and civil engineering works in general from rainwater or groundwater, as well as for the containment of water, e.g. in water catchment tanks for irrigation, and a new process for the manufacture of that membrane.
  • Bitumen-polymer-based waterproofing membranes have been produced for many years and can be found on the market e.g. in the form of rolls ready for application to the surfaces of structures which require waterproofing.
  • these membranes comprise:
  • cores glass fleece, non-woven materials and synthetic fibre, plastics films, metal sheets, glass nets and fabrics, cardboard, paper and many others.
  • Surface finishing materials are also used on one or both sides of the membrane, and these may have various functions, e.g. an aesthetic function as in the case of the "self-protected" membranes, i.e. coated on the top side or on the surface intended to remain visible, e.g. with slate chippings or metal sheeting, or a functional function, as in the case of membranes lined with films of a textile nature in order to improve their paintability or the application of adhesives or also membranes coated with anti-adherent materials which make them easier and more convenient to lay, preventing sticking between the various turns of the membrane when it is wound in a roll.
  • various functions e.g. an aesthetic function as in the case of the "self-protected" membranes, i.e. coated on the top side or on the surface intended to remain visible, e.g. with slate chippings or metal sheeting, or a functional function, as in the case of membranes lined with films of a textile nature in order to improve their paintability or the application of adhesives or also
  • thermoplastic polymers used to modify the bitumen to obtain waterproofing membranes are those of the polyolefin series and the styrene-butadiene series.
  • Bituminous membranes containing modifying agents of the polyolefin series are described as BPP membranes (bitumen - polymer plastomer) or also in some cases “bitumen-APP membranes", as the first modifying agent historically introduced for modifying bitumen for obtaining plastomer waterproofing materials was in fact APP (atactic polypropylene). These membranes are more resistant to high temperatures and are plastomers, i.e.they have a plastic behaviour, that is under the effect of an induced deformation the waterproofing material follows the deformation without offering any constant resilient elasticity.
  • bituminous membranes containing modifying agents of the styrene-butadiene copolymer series are described as BPE membranes (bitumen-polymer-elastomer) or bitumen-SBS membranes, in that the main modifying agent is in fact styrene-butadiene-styrene.
  • BPE membranes bitumen-polymer-elastomer
  • bitumen-SBS membranes bitumen-SBS membranes
  • the advantages and the corresponding limitations of waterproofing materials of the BPP type and the BPE type are, in the case of the former, greater resistance to heat and solar radiation, and in particular UV radiation, and plasticity, while in the case of the latter, better resistance to low temperatures, better bonding to the substrate and elasticity.
  • waterproofing membranes are manufactured by impregnating the core with the waterproofing material.
  • the core or mechanical support is coated on one or both sides with a waterproofing material previously prepared in suitable heated mixers in which the bitumen has suitable polymers and other additives added to it.
  • the bituminous material is then cooled, surface treated and finally rolled into rolls of predetermined length.
  • Impregnation both by immersion and by spreading, is a difficult operation in that the desired thickness has to be imparted to the membrane and reinforcing material, especially when porous products, such as for example polyester non-wovens, have to be perfectly impregnated to ensure absolute uniformity in the finished product.
  • the impregnating operation tends to set up tension in the membrane as it is being formed, which is subjected to a variable amount of elongation.
  • This elongation is "frozen” by the immediately subsequent cooling of the membrane and constitutes an important parameter for the quality of the finished product.
  • An assessment of the magnitude of this effect may be made by measuring "dimensional stability" on the finished product, that is the free shrinkage which the membrane exhibits when after heating it is left free to recover the elongation imparted at the time of its manufacture. The greater the shrinkage the less will be the stability of the membrane.
  • the principal object of this invention is to provide waterproofing membranes with enhanced dimensional stability which are therefore suitable for providing lasting and effective protection over a long period of time.
  • Another object of this invention is to provide a process for the manufacture of bituminous waterproofing membranes which in addition to yielding membranes with a high degree of dimensional stability is easy to implement and does not require any major investment in plant.
  • a waterproofing membrane comprising a core is characterised in that it comprises three different layers of waterproofing material applied to the core in three separate successive steps.
  • the first layer of waterproofing material applied to the core has characteristics which render it compatible with the remaining two layers applied subsequently.
  • the core saturated with waterproofing material is allowed to cool between the first and the second steps so that it acquires sufficient rigidity to withstand the tension subsequently induced and therefore has better dimensional stability.
  • a plant for the production of waterproofing membrane in three layers characterised in that it comprises a first station in which a core is immersed in a bath of waterproofing mass or material having stabilising and compatibility-enhancing characteristics with respect to the two materials subsequently applied to the core, until saturation, a second station in which the core saturated with waterproofing material has a layer of waterproofing material based on both elastomer and plastomer applied to one side, and a third station in which a layer of waterproofing material including compatibility-enhancing materials is spread onto the core from the said second station.
  • the sole Figure shows a diagrammatical lateral elevation view of a three station plant according to the invention.
  • the waterproofing material applied to the core is based on bitumen modified with low molecular weight polymers of a partly polar nature, e.g. EVA (ethylene vinyl acetate), low molecular weight acrylic copolymers and others capable of performing the same bonding function between waterproofing materials.
  • EVA ethylene vinyl acetate
  • This modification is effective from the chemical point of view in that it confers stability and compatibility with the materials subsequently applied to the core.
  • the quantity of waterproofing material applied must in practice be limited to saturation of the core, and the latter may be of any suitable type.
  • compositions which can be used to provide the waterproofing/compatibility-enhancing material Three examples are provided below by way of non-limiting indicative examples of compositions which can be used to provide the waterproofing/compatibility-enhancing material.
  • Type 85/25 oxidised bitumen 80% Radial SBS type elastomer 5% Polypropylene homopolymer 10% Filler with a "10,000 mesh" particle size 5%
  • the operation of applying this compatibility-enhancing material can be performed by immersing core 1 through use of a suitable immersion roll 2, which can be adjustably set at various levels with respect to a trough 3 containing the bath of waterproofing/compatibility-enhancing material in a first treatment station 4.
  • the immersion operation is performed in combination with a rolling operation performed by a squeezing roller diagrammatically represented by a pair of cylinders 5 and 6 controlled by a balance lever mechanism to exert a maximum pressure of 60 kg/cm 2 on core 1.
  • Core 1 is therefore saturated at station 4, and the limitation on the quantity of waterproofing material must in practice be limited to saturation of the core otherwise the compatibility-enhancing effect may be compromised.
  • core 1 is not subjected to any kind of tension, and as a result the operation of applying the waterproofing/compatibility-enhancing material and that of rolling must be controlled electronically so that they take place under closely controlled conditions. Core 1 is therefore carefully “monitored” to avoid stretching during application.
  • the passage through second treatment station 7 should take place at a predetermined distance from first station 4 so the saturated core can cool in ambient air with a temperature drop of approximately 30°C.
  • the second type of waterproofing material for example one with a plastomer or elastomer base, respectively, and therefore of the BPP or BPE type, is applied.
  • the type of waterproofing material is different from that present at station 4 and is therefore prepared and delivered independently by separate pipes (not shown).
  • the waterproofing material can be applied to the upper or lower side or both sides according to the nature of the final membrane which it is desired to obtain.
  • the cooling of core 1 which would have an adverse effect on the bonding of subsequent layers when the compatibility-enhancing material was not present, provides the additional benefit of improving the dimensional stability of the membrane because it confers sufficient rigidity upon the core, even if weakly impregnated or, better, saturated with waterproofing material, to withstand the tensions subsequently induced during the manufacturing process.
  • an immersion roller 8 which is preferably interfaced electronically with a drive motor which is capable of controlling the tension on the core between station 4 and station 7 and an inking roller 9 as well as two pairs of calendering rollers 10, 11 and 12, 13.
  • a third station 14 there is provided an inking roller 15 and a spreading roller 16, which apply a further layer of waterproofing material which is different from the previous materials and is therefore likewise produced and delivered in a totally independent way to one side of the membrane being formed.
  • the waterproofing material in this third station comprises bitumen suitably modified with appropriate compatibility-enhancing agents similar to those used at station 4, that is with polymers of the EVA (ethylene vinyl acetate) and low molecular weight acrylic type.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Building Environments (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP19980117400 1997-09-17 1998-09-14 Membrane d'étanchéité et procédé pour sa fabrication Expired - Lifetime EP0903435B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVR970085 IT1296530B1 (it) 1997-09-17 1997-09-17 Membrana di impermeabilizzazione e procedimento per la sua fabbricazione
ITVR970085 1997-09-17

Publications (3)

Publication Number Publication Date
EP0903435A2 true EP0903435A2 (fr) 1999-03-24
EP0903435A3 EP0903435A3 (fr) 2001-05-02
EP0903435B1 EP0903435B1 (fr) 2004-02-25

Family

ID=11428429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980117400 Expired - Lifetime EP0903435B1 (fr) 1997-09-17 1998-09-14 Membrane d'étanchéité et procédé pour sa fabrication

Country Status (3)

Country Link
EP (1) EP0903435B1 (fr)
DE (1) DE69821847D1 (fr)
IT (1) IT1296530B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6696125B2 (en) 2002-04-25 2004-02-24 Polyglass, U.S.A. Self-adhered modified bitumen roofing material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893889A (en) * 1956-04-02 1959-07-07 United States Gypsum Co Intumescent fire-retarding bituminous coating composition and roofing made therefrom
US4055453A (en) * 1972-02-19 1977-10-25 Tajima Roofing Co., Ltd. Process for producing laminated bituminous roofing membrane
US4871605A (en) * 1983-08-05 1989-10-03 Genstar Building Materials Company Inorganic fiber mat based bituminous sheet materials
US4755409A (en) * 1986-01-24 1988-07-05 Hyload Corporation Waterproofing laminate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6696125B2 (en) 2002-04-25 2004-02-24 Polyglass, U.S.A. Self-adhered modified bitumen roofing material

Also Published As

Publication number Publication date
ITVR970085A1 (it) 1999-03-17
IT1296530B1 (it) 1999-07-02
EP0903435A3 (fr) 2001-05-02
EP0903435B1 (fr) 2004-02-25
DE69821847D1 (de) 2004-04-01

Similar Documents

Publication Publication Date Title
EP1710337B1 (fr) Mats non-tissés de fibres polymères et leur procédé de fabrication
US7803725B2 (en) Carrier membrane, coated membrane composite, and method
US11767674B2 (en) Synthetic fabric having slip resistant properties and method of making same
US4248652A (en) Method of making leatherlike materials (A)
CA1283034C (fr) Composite d'armature pour membranes de couvertures, et fabrication dudit composite
CA2802068C (fr) Procede de construction de panneaux composites de construction utilisant des films solubles
DE1923871A1 (de) Verfahren zur Herstellung von Polyurethanfilmen oder -laminaten
EP0145064B1 (fr) Feuille de matériau de recouvrement de toiture
US6492012B1 (en) Polymer penetrated porous substrates
US20060228962A1 (en) Nonwoven polymeric fiber mat and method
GB2055057A (en) Process for saturating a fiber mat of open structure
US5108831A (en) Roofing material
US6207593B1 (en) Asphalt coated mat
EP0903435A2 (fr) Membrane d'étanchéité et procédé pour sa fabrication
WO2019185459A1 (fr) Procédé pour la production d'une membrane d'imperméabilisation bitumineuse préformée
EP0592683A1 (fr) Procede pour la production de carreaux de tapis
US3625119A (en) Surface applications such as bridge deck covering, pavement patching, roofing applications and other coverings
EP0208918A2 (fr) Matériau composite de renforcement pour feuilles de couverture de toit et procédé pour fabriquer de tels matériaux composites
GB2052378A (en) Preformed sheet-like structures
KR102431798B1 (ko) 아스팔트 함침 부직포를 포함하는 아스팔트 보강재를 이용한 포장 방법
US20070049144A1 (en) Coal tar enamel coated base sheets
US4584210A (en) Method and means for producing waterproofing membranes
DK175921B1 (da) Fremgangsmåde samt anlæg til fremstilling af tæppefliser samt tæppeflise
AU678061B2 (en) Liquid-repellant covering layer and method for the manufacture of such covering layer
NO760486L (fr)

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 CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

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 CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7D 06N 7/00 A, 7D 06N 5/00 B

17P Request for examination filed

Effective date: 20010904

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AXX Extension fees paid

Free format text: RO PAYMENT 20010904;SI PAYMENT 20010904

17Q First examination report despatched

Effective date: 20020220

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

RBV Designated contracting states (corrected)

Designated state(s): BE DE GB IT NL PT SE

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE GB IT NL PT SE

AX Request for extension of the european patent

Extension state: RO SI

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040225

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040225

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69821847

Country of ref document: DE

Date of ref document: 20040401

Kind code of ref document: P

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040525

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040526

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
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: 20040914

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

Effective date: 20041126

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

Effective date: 20040914

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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: 20040725

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

Ref country code: IT

Payment date: 20100928

Year of fee payment: 13

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

Ref country code: IT

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

Effective date: 20110914