Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
  • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
  • E04D5/10—Roof covering by making use of flexible material, e.g. supplied in roll form by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
• • 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.]
  • Y10T428/24008—Structurally defined web or sheet [e.g., overall dimension, etc.] including fastener for attaching to external surface
• • 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
  • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• • 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
  • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• • 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
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31815—Of bituminous or tarry residue
• • 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
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31855—Of addition polymer from unsaturated monomers

Definitions

• the present invention relates to a waterproofing system for roofs comprising a first sealing layer mechanically fixed on the support to be protected and a second self-adhesive sealing layer, fixed to the first by cold adhesive.
• Another sealing system consists of apply directly to the support to be protected with a self-adhesive sealing sheet, the upper face of which is protected by a plastic film, the adjacent sheets being joined either by partial covering or by the addition of an additional strip on horseback on both sheets.
• the sheets have to withstand the movements of the supports and therefore risk being quickly damaged.
• the present invention aims to provide a satisfactory solution to the problems posed by these known systems, by proposing a sealing system which implements a sealing sheet of a new type.
• the present invention thus has for first object a sealing system which is characterized by the successive application of two sealing layers, the first of which is mechanically fixed on the support to be protected and the second, self-adhesive, is fixed to the first by cold adhesive.
• the present invention also relates to the sealing sheets which constitute the first layer of the sealing system according to the invention.
• the sealing sheets according to the invention consist of the assembly of a bitumen-based sheet reinforced by a reinforcement and of a film of a material having the dual property of offering great resistance to tearing and allow good adhesion of the self-adhesive sheet which constitutes the second layer of the sealing system according to the invention.
• bitumen-based waterproofing sheets used to produce the waterproofing sheets according to the invention can be any sheet based on oxidized bitumen or modified bitumen reinforced by a reinforcement of mineral or organic fibers. They can thus be made of bitumen modified with an elastomer or with a thermoplastic polymer of the styrene-butadiene-styrene type, coating a frame such as a woven or nonwoven web of glass, polyester, polypropylene or polyamide.
• the film used to produce the sealing sheets according to the invention must, as has already been said, have the dual property of offering great resistance to tearing and of allowing good adhesion of the self-adhesive sheet.
• -adhesive which constitutes the second layer of the sealing system according to the invention.
• Such a film can be a film of a synthetic material such as polyethylene or propylene with a thickness of 10 to 200 micrometers and preferably 40 micrometers.
• VALERON bi-stretched polyethylene film
• the sealing sheets according to the invention are obtained by bonding such a film to a sealing sheet of known type, this bonding being carried out by means of an adhesive.
• an adhesive suitable such as a solvent-based bituminous adhesive or a crosslinkable resin-based adhesive.
• the sealing sheets according to the invention have the particularly advantageous property of offering remarkable resistance to tearing, as well as excellent adhesiveness with respect to the self-adhesive sheets which constitute the second layer of the sealing system. according to the invention.
• the sealing system according to the invention has the considerable advantage of double security due on the one hand to the implementation of two sealing layers, each of which is perfectly sealed by itself and d on the other hand to the perfect adhesion of the second layer to the first.
• the sheets used to produce the second sealing layer of the sealing system according to the invention are bitumen-based sealing sheets comprising a self-adhesive underside protected by a removable protective sheet, for example paper or silicone polypropylene.
• a removable protective sheet for example paper or silicone polypropylene.
• Their upper face can advantageously be protected either by flakes or mineral granules, or even by a metal sheet or a film of a synthetic material having a high chemical resistance.
• They may also include a reinforcement of mineral or organic fibers such as a woven or non-woven sheet of glass, polyester, polypropylene or polyamide.
• the implementation of the system according to the invention is carried out initially by dry unwinding on the support of the sealing sheets according to the invention, which are fixed at the edge by mechanical fasteners such as screws, nails or rivets preferably fitted with distribution washers or plates.
• Each sheet is partially covered, on the mechanically fixed border, by the following sheet, which is fixed to it by gluing along the edge of recovery.
• This bonding can be carried out using a cold adhesive such as an adhesive based on bituminous binder or an adhesive based on reactive synthetic resins, for example an adhesive based on polyurethane or epoxy resin.
• the second sealing layer is fixed on this first layer, in a second step, by simple unwinding and application of the self-adhesive sheets previously stripped of their silicone protective sheet, the joints between two adjacent sheets being produced by partial covering and obtained by simple self-adhesion.
• the sealing system according to the invention offers the additional advantage of great ease of implementation since it does not require the use of torch welding, which moreover eliminates the risks inherent in the presence of fire on a site.
• the mechanical fixing of the first sealing layer also has the subsidiary advantage of allowing it to be placed on any support capable of accommodating screws or rivets, for example wood, wood-based panels. , metal or concrete, without this support having to meet the surface quality requirements for the first sealing layers fixed by adhesive.
• This mechanical fixing also offers the advantage, compared to fixing by gluing, of allowing gases or water vapor possibly present between the support and the first layer to be distributed regularly under this first layer, thus avoiding the phenomena of blistering.
• a sealing sheet according to the invention By way of example of a sealing sheet according to the invention, mention may be made of one whose composition and characteristics are as follows: - Binder: styrene-butadiene-styrene elastomer bitumen - Reinforcement: glass fibers with a grammage of 50 g / m2 - Surface film: 40 micrometers thick polyethylene sheet - Nominal thickness: 2mm.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Building Environments (AREA)
• Laminated Bodies (AREA)
• Tents Or Canopies (AREA)
• Roof Covering Using Slabs Or Stiff Sheets (AREA)
• Paper (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=9358515

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (9)

Citations (7)

Family Cites Families (6)

• 1987
  • 1987-12-24 FR FR8718467A patent/FR2625242B1/fr not_active Expired - Lifetime
• 1988
  • 1988-02-04 CA CA000558184A patent/CA1330247C/fr not_active Expired - Fee Related
  • 1988-09-22 US US07/247,540 patent/US5024886A/en not_active Expired - Fee Related
  • 1988-11-22 EP EP88440098A patent/EP0323376B1/de not_active Expired - Lifetime
  • 1988-11-22 AT AT88440098T patent/ATE107991T1/de active
  • 1988-11-22 ES ES88440098T patent/ES2058321T3/es not_active Expired - Lifetime
  • 1988-11-22 DE DE3850486T patent/DE3850486T2/de not_active Expired - Fee Related

Patent Citations (7)

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