Abstract

A two part polyurethane adhesive for adhering roofing materials to a roof substrate comprising a first part comprising a reaction product of an aliphatic and/or aromatic isocyanate pre-polymer and a second part comprising at least one polyol. The adhesive has an extended extrudable and workable temperature range from -15 degrees Celsius to 90 degrees Celsius.

IPC Classes  ?

• C09J 175/04 - Polyurethanes
• E04D 11/00 - Roof covering, as far as not restricted to features covered by only one of groups Roof covering in ways not provided for by groups

Abstract

The thermo-acoustic radiant membrane is designed for use on a floor beneath a spa, whirlpool or therapeutic bath, inertia base or similar. The membrane comprises a radiant layer made of a metallic film, on which a layer of rubber granules of varying size are hot-laminated with a bitumen elastomer to which other components can be added such as wood, mineral, synthetic, or vegetable fibres. The membrane is also provided with a water-impermeable layer to act as a vapour block. Said layer made from polyethylene, polypropylene, polyester or metal is resistant to tearing, static crushing and tension and has a large capacity for stretching and is covered with bitumen elastomer. The bitumen elastomer layer on the impermeable layer is placed on the granule layer of the radiant layer in order to assemble the membrane by adhesion of the layers.

IPC Classes  ?

• B32B 11/02 - Layered products essentially comprising bituminous or tarry substances with fibres or particles embedded in it or bonded with it
• B32B 11/08 - Layered products essentially comprising bituminous or tarry substances comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance of metal
• B32B 15/16 - Layered products essentially comprising metal next to a particulate layer
• B32B 27/14 - Layered products essentially comprising synthetic resin next to a particulate layer
• B32B 37/26 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer which influences the bonding during the laminating process, e.g. release layers or pressure equalising layers

Abstract

The invention relates to a multilayer substrate which is intended to be installed under a floor covering in order to soundproof said floor. The inventive substrate includes an upper layer consisting of a film of a polymer, such as polyester or polyethylene. The substrate also includes a central layer consisting of a thermofusible film having a polymer bitumen coating applied thereto. The substrate further includes a lower layer consisting of aggregates originating from recycled tyres, which are applied to an added polymer bitumen support or which are placed directly on the central layer.

IPC Classes  ?

• E04F 15/20 - Separately-laid insulating layersOther additional insulating measuresFloating floors for sound insulation
• E04B 1/84 - Sound-absorbing elements
• E04B 5/00 - FloorsFloor construction with regard to insulationConnections specially adapted therefor

Abstract

The invention concerns a hot air device for thermowelding membranes to surfaces. It includes an air inlet, a casing in fluid communication therewith, a combustion chamber mounted within the casing and spaced apart therefrom. The chamber has perforations allowing air to flow therein. The perforations allow some air to flow into the upstream section of the chamber producing an air-fuel mixture, and let the remaining air into the downstream section, thus shortening the flame within the chamber and producing hot air. The device includes an outlet portion for expelling hot air and not allowing a flame out therefrom, and a blower to force airflow from the air inlet through the chamber and out from the nozzle. The chamber may be pyramid or cone shaped and have a deflector to help direct air into the upstream section.

IPC Classes  ?

• B23K 28/00 - Welding or cutting not covered by groups
• C10C 3/10 - Melting
• E01C 7/22 - Binder incorporated in hot state, e.g. heated bitumen
• E04D 15/04 - Apparatus or tools for roof working for roof coverings comprising slabs, sheets or flexible material