EP3156556B1 - Insulating system - Google Patents

Description

The present invention relates to a system for the insulation of crawling roofs, attic ceilings, for example fitted attics, by means of hangers and the fixing of a support profile (also called fur) of a lining partition to distance from a wall to be lined with thermal and/or acoustic insulation.

There are currently different ways to insulate a wall, such as a wall, a ceiling such as a sloping ceiling and/or a roof of a building using a thermal insulator, such as an insulator based on mineral fibres, whether in new construction or during renovation. Such systems are described in FR2925929 and EP3009582 .

For this, it is common to use a partition (against partition or false ceiling) called doubling (for example a plasterboard, in particular of type BA13 or other) which is fixed, in particular by screwing, on a metal fur including rails to place it at a distance from the wall.

However, these rails must be fixed to the wall to be lined, for example beams such as structural rafters or ceiling joists, using hangers which make it possible to maintain the insulation as well as a vapor barrier membrane (windbreak and/or pareaire) between the lining partition and the wall to be lined. This membrane is most often independent and interposed between the layer of fibrous material and the lining partition, typically attached to the partition, optionally interposed between two layers of thermal insulation. Thus, to cover an entire surface to be insulated, multiple regularly spaced lines are used.

Each hanger typically comprises a main body in the form of a rod extending transversely to the wall to be lined and to the doubling partition, one end of which is provided with means for its attachment to a structural element of the wall to be lined and whose the other end is provided with means for supporting a lining fur.

During installation, it is common practice to install the insulation by piercing it right through with the rod of each hanger, which causes multiple piercing of the thermal insulation. Then, it is common to mount a fur using supports, usually supports attached to the end of the rods of the lines. A vapor barrier membrane is then placed on the inside of the furring, that is to say between the furring and the lining partition. Fixing the lining partition on the furring involves piercing the membrane with fixing elements (staples or self-drilling screws, for example). This piercing of the membrane harms, although to a lesser extent, the tightness of the membrane.

The positioning of the membrane in front of the fur raises another technical problem. Indeed, this configuration leaves little or no space (air gap) between the membrane and the lining partition. However, it is often necessary to insert, behind the lining partition, various cables (electricity, ventilation, telecommunications, IT) or pipes (water network, air conditioning). It is then difficult, if not impossible, to place these accessories between the membrane and the lining partition.

These cables or pipes can be placed behind the membrane, but it is then no longer possible to access them for maintenance or changes to the cabling installation without remove the membrane or make an opening in it. In addition, the cabling operations may, for logistical reasons or changes in needs or technologies, take place after the lining of the wall, which also requires the removal or opening of the membrane by workers who do not are generally not specialized in wall lining and insulation. All these operations affect the integrity and tightness of the membrane.

Another solution is to place the vapor barrier membrane against the inner side surface of the thermal insulation, i.e. on the surface of the insulation on the side of the room to be insulated where the installer is located. . The membrane is installed by drilling it directly on the rod of the hanger and by wedging the membrane between two pinching means in order to create the seal. The piercing is particularly detrimental with regard to the membranes, because their sealing function, permanent or selective, is then altered. The piercing of the membrane can also constitute an initiator of a tear likely to spread if too much tension is exerted.

An object of the present invention is therefore to solve the problems mentioned above, using a solution that is simple to manufacture, inexpensive, easy to implement and optimized in terms of efficiency, in particular with regard to compliance with the tightness of the membrane while providing a sufficiently large and accessible space behind the lining partition to pass accessories such as cables and/or pipes.

In the present application, “inner side” means on the side (or in the direction) of the part to be insulated, while “outer side” means in the direction of the outside of the part to be insulated. In general, the surfaces directly or indirectly (because hidden by an obstacle) facing the installer during installation of the system are interior side surfaces, the installer being in the room to be installed during installation. isolate. By referring to the figure 5 , the interior side surfaces are the surfaces visible directly or indirectly by the installer who face the front end 32 of the rod.

According to one of its aspects, the subject of the invention is a system for the insulation and vapor barrier sealing of a wall as defined by claim 1. Additional aspects of the invention are defined in independent claims. The dependent claims define preferred and/or alternative embodiments. The system can be used to insulate a wall, such as a wall, a ceiling such as a sloping ceiling and/or a roof of a building, in particular of a house or a residential dwelling.

The hanger can be fixed on a wall to be lined, such as a rafter, at the level of the rear end of the stem of the hanger. The end of the rod of the hanger may comprise a fixing plate, in particular a fixing plate comprising one or two fins erected radially with respect to the rod. Preferably, the fin is formed in one piece with the stem. Each fin may include at least one orifice, in particular a series of aligned orifices substantially parallel to the rod and may also include one or two orifices farther from the rod with respect to the first series of orifices.

The plate may comprise two end position markers between which are provided at least one other intermediate marker, advantageously two, and preferably three intermediate markers, the distance between two consecutive markers preferably always being the same, for example approximately 1 centimeter. The rod of the hanger may also include, at the rear end and more particularly at the level of the plate, marks defining the positioning limits of the hanger on the support, for example the wall to be doubled, in particular on a beam such as a rafter.

The rod of the hanger may comprise a reinforcing core, in particular a metal reinforcing core, more particularly a threaded rod. The reinforcing core can then be covered with molded plastic material.

The rod may include a radial stop ring making it possible to define the ideal and/or defined positioning distance of the fur support head as well as being able to provide a first pinching means. When installing the thermal insulation, it is preferable that the radial stop ring is in contact with the inner side surface of the thermal insulation coating.

In a preferred embodiment, the front end of the rod ends in a point. The point makes it possible to pierce the mattress as well as the covering by gradually separating the mattress and the covering as it is pushed in and makes it possible to reduce or even avoid the risk of tearing the covering. The tip may further comprise a base, the base of the tip possibly comprising a reinforcing core comprising indentations, in particular evenly distributed over its periphery.

In order to facilitate the installation of the thermal insulation and/or the coating through the rod of the hanger by piercing, it is preferable to use a removable cap, having for example an ogive shape, which comprises a hollow shaft for mounting around the front end of the rod. Preferably the hollow shaft has an external diameter identical to or slightly less than the diameter of the radial stop ring. In a preferred embodiment, the diameter between the end and the base of the cap is less than or equal to the diameter of the stop ring, in order to avoid tearing of the coating. The cap preferably comprises a pointed end, in particular more pointed than the pointed end of the rod, in order to facilitate the piercing of the thermal insulation, in particular the piercing of the coating with little or no tearing. The cap barrel may include protrusions extending radially therein to cooperate with the outer surface of the forward end of the stem once the cap is fitted therearound for the purpose of help keep it in position. The cap may further comprise on its outer surface one or more gripping notches to facilitate removal of the cap after use, arranged for example on either side of the barrel.

The furring support head may be hollow and/or provide a second pinching means for the sealing sleeve. During installation, the head can be mounted and held at the front end of the rod, in particular around the rod, by radial clipping.

The support head can be adapted to cooperate with the radial stop ring, in particular in the active position of use. For example, the support head and the radial stop ring form, in the active position of use, a radial locking jaw configured to pinch the sealing sleeve in order to create a thermal seal and/or vapor barrier.

In an alternative embodiment, the support head is mounted in a removable manner and held in place around the rod with the aid of a key passing through it and cooperating with the rod. The support head may include through radial openings for passage through the key, which is U-shaped comprising two elastically deformable branches to move apart and then tighten around the rod after having passed through the openings.

Preferably, the support head comprises at least a first annular seal formed on a gripping surface facing the radial stop ring and resting on the latter in the active position of use. The support head may also include on the pinch surface a second annular seal coaxial with the first joint and arranged substantially at the periphery of the pinching surface. When the support head includes a seal, the latter may be constituted by an elastomer bead protruding from the gripping surface.

In a preferred embodiment, the support head comprises a dome-shaped part comprising a peripheral groove in which can slide a lining wall fur such as a rail, in particular a metal rail. Preferably, the support head is adapted to be compatible with the fittings usually made available to the installer, in particular fittings of the F45 and F47 type. The head may comprise an axial space between the base of the dome part and the pinching surface, the space being able to measure between 5 and 20 mm, more particularly between 10 and 15 mm.

The sealing sleeve is adapted to provide a vapor barrier seal between the thermal insulation and the interior of the room, in particular between the outer side surface of the thermal insulation and the interior of the room to be insulated. The sealing sleeve may comprise an inner side layer, in particular a layer of plastic material, for example polyester, PET or polyolefin, and an adhesive layer on the outer side. The plastic layer can be metallized, for example, with aluminum. The adhesive layer is preferably protected by a release sheet for ease of use. In a preferred embodiment, the removable non-stick film is pre-cut along its length in order to be able to easily remove a part, in particular half, and/or the entirety of the non-stick film, for example by slightly bending the sealing sleeve to slightly peel off the release liner. The sealing sleeve may have a thickness of at least 5 μm, at least 100 μm or at least 250 μm and/or of less than 600 μm, of less than 400 μm or of less than 300 μm.

• légèrement inférieur au diamètre extérieur de la tige ; ou
• compris entre le diamètre de la tige et le diamètre extérieur de la bague radiale d'arrêt.

The sealing sleeve may comprise an opening, in particular a circular central opening. Preferably, the opening is pre-cut. The opening can have a diameter:

• slightly smaller than outside diameter of stem; Where
• between the diameter of the rod and the outer diameter of the radial stop ring.

• la tige, notamment une partie de la tige adjacente à la bague d'arrêt ;
• la bague, plus précisément sur la surface de côté intérieur de la bague ; et
• le revêtement pare-vapeur de l'isolant thermique, plus précisément sur la surface de côté intérieur du revêtement pare-vapeur.

This diameter creates a vapor barrier around the stem. In the case where the diameter is less than the diameter of the rod, the sealing sleeve will be fixed on at least three parts of the system:

• the rod, in particular a part of the rod adjacent to the stop ring;
• the ring, specifically on the inner side surface of the ring; and
• the vapor barrier coating of the thermal insulation, more precisely on the inner side surface of the vapor barrier coating.

In the case where the diameter of the opening is between the outer diameter of the stop ring and the diameter of the rod, the sealing sleeve will be fixed on the ring (more precisely on its inner side surface) and the vapor barrier coating (more precisely on its inner side surface) of thermal insulation.

The sealing sleeve may have a surface area of less than 250 cm ² , preferably less than 150 cm ² , in particular less than 100 cm ² . Typically, the sleeve has a substantially square shape having a length of less than 15cm, less than 12cm, or less than 10cm. This avoids overuse of sealing sleeve material and thus reduces losses and costs. Furthermore, it has been found that these dimensions are sufficient to obtain a good vapor barrier seal.

The sealing sleeve is preferably fixed around the rod of the hanger, in particular the part of the adhesive layer closest to the opening is fixed to the rod and/or to the stop ring, the remainder of the adhesive layer being fixed on the inner side surface of the thermal insulation coating. This provides a seal sufficient which can be further reinforced by the pinching of the part of the sleeve fixed to the radial stop ring between the latter and the pinching surface of the support head, in the active position of use.

• un matelas de laine minérale comprenant une surface principale ; et
• un revêtement pare-vapeur étant fixé sur la surface principale du matelas.

The thermal insulation includes:

• a mineral wool blanket comprising a major surface; and
• a vapor barrier covering being attached to the main surface of the mattress.

The mineral wool blanket may comprise or consist essentially of mineral wool, the mineral wool possibly being glass wool and/or rock wool. The mineral wool blanket comprising glass wool may have a density of at least 10 kg/m ³ or at least 15 kg/m ³ and/or a density of less than 30 kg/m ³ or less than 25 kg/ ^m3 . When the mattress comprises rock wool, the mattress may have a density of at least 20 kg/m ³ or at least 25 kg/m ³ and/or less than 80 kg/m ³ or less than 70 kg/ ^m3 . In order to provide effective thermal insulation, the thermal insulator may have a value of no more than 0.040 W/mK, no more than 0.035 W/mK, no more than 0.033 W/mK or no more than 0.032 W/ mK

The thermal insulation may have a thickness of more than 170 mm or more than 190 mm and/or a thickness of less than 250 mm or less than 230 mm.

The coating may comprise or consist essentially of a plastics material, for example one or more continuous films of plastics material. Preferably, the plastic material can be selected from polyesters and/or polyolefins. In a preferred embodiment, the coating comprises a continuous film of polyethylene terephthalate (PET). Other continuous plastic films can be used, for example: polyethylene film, in particular high density polyethylene, polyethylene naphthalate (PEN), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), polypropylene and/or polyvinyl chloride, polyacrylate. The vapor barrier coating may be metallized and/or comprise a metallized layer reinforced with a film of plastic material, in particular at least one of the plastic materials listed above. Preferably, the coating comprises aluminum. These same materials can be used for the sleeve and/or the sticky tape. The covering may also comprise a reinforcement or latticework, for example made of wire, in particular glass yarn, in order to reinforce the covering.

The coating may have a thickness in the range 5-100 µm, preferably 5-30 µm. The coating can be attached to a main surface of the mineral wool blanket, preferably by an adhesive, in particular a hot-melt adhesive. The adhesive can include a polyethylene. Fixing by adhesion makes it possible to avoid thermal bridges between the covering and the mattress, as well as to improve the vapor barrier properties of the thermal insulation. When installing thermal insulation, it is preferable that the coating be located on the inside of the room to be insulated, that is, on the side visible to the installer.

In a preferred embodiment, an adhesive strip is used to form a vapor barrier seal at the connection interface between two adjacent elements, such as between two adjacent thermal insulators and/or between a thermal insulator and a support of the room, for example a wall.

The sticky strip can be at least 6 cm, at least 8 cm, at least 10 cm, at least 12 cm or at least 15 cm wide, which allows the interface to be covered quickly without the installer wasting time during application. The sticky tape may comprise at least three layers stacked on top of each other, a top layer non-adhesive, an adhesive layer and a removable release liner. The upper layer may comprise a continuous film of plastic material, in particular a continuous film of metallized plastic material. The removable release film is preferably pre-cut along its length in order to be able to remove only part of the release film, in particular half. This allows the sticky strip to be placed on one of the two elements (for example, a thermal insulator and/or a part support) before installing or carrying out tasks on the second element (for example, a thermal insulator and/or or a part support).

In a first example, when sealing between two adjacent thermal insulators, the installer will remove all of the release film and simultaneously apply the adhesive layer to a portion of each thermal insulator, covering the interface between the two thermal insulators. The adhesive tape is applied over the entire length of the interface between the two adjacent thermal insulators.

In a second example, when sealing between a thermal insulator and the adjacent wall (also called a gable/creep joint), it may be preferable to apply a complementary adhesive, for example a sealant such as elastic sealant, to the wall. where the sticky tape will adhere to ensure that the seal is optimal. The installer can therefore stick a portion of the adhesive tape on the thermal insulation by removing only half of the release film, then apply the complementary adhesive to the wall, remove the other half of the release film and then stick the remainder of the sticky tape on the complementary adhesive placed on the wall. This allows the installer to be able to seal with one hand.

For convenience during installation, a portion of a second sticky strip can adhere to a portion of a first sticky strip.

In a preferred embodiment of the invention, the coating, the adhesive tape and the sealing sleeve comprise a surface, in particular the outer surface which is positioned during installation on the inside of the part to be insulated, having a similar or substantially identical color in order to have an overall surface of the system over the entire surface of a room that is substantially homogeneous to the naked eye, in particular as the installer moves away from the isolated surface.

Preferably, the insulation system does not include other vapor barrier membranes except those described above and in this application. The vapor barrier sealing sleeve, the vapor barrier coating and/or the adhesive tape can also be an air barrier.

• La figure 1 est une vue en perspective d'une partie principale d'une suspente;
• La figure 2 est une vue en perspective de la suspente munie d'une tête de support, dans une position avant utilisation;
• Les figures 3 et 4 sont des vues en perspective avant et arrière d'une tête de support appartenant à la suspente;
• La figure 5 est une vue schématique de côté des différentes étapes d'installation de la suspente;
• Les figures 6 à 10 sont des vues de dessus reprenant chaque étape de la figure 5;
• Les figures 11 et 12 sont des variantes de réalisation de la figure 6;
• Les figures 13 à 17 sont des variantes de réalisation de la tête de support et de ses moyens de montage et de maintien sur la suspente;
• La figure 18 est une vue de face d'une variante de réalisation d'une partie arrière de la suspente;
• La figure 19 est une vue en perspective éclatée d'un capuchon et d'une extrémité avant de la suspente autour de laquelle il doit être monté;
• La figure 20 est une vue en perspective similaire à la figure 18 mais dans laquelle le capuchon est monté autour de la tige;
• La figure 21 est une vue en perspective schématique d'une étape d'installation, notamment le repère 3 de la figure 5.

The invention will now be described in more detail with reference to particular embodiments given by way of illustration only and shown in the appended figures in which:

• The figure 1 is a perspective view of a main part of a hanger;
• The figure 2 is a perspective view of the hanger provided with a support head, in a position before use;
• The figures 3 and 4 are front and rear perspective views of a support head belonging to the hanger;
• The figure 5 is a schematic side view of the different stages of installation of the hanger;
• The figures 6 to 10 are top views showing each step of the figure 5 ;
• The figures 11 and 12 are variant embodiments of the figure 6 ;
• The figures 13 to 17 are alternative embodiments of the support head and its mounting and holding means on the hanger;
• The figure 18 is a front view of an alternative embodiment of a rear part of the hanger;
• The figure 19 is an exploded perspective view of a cap and a forward end of the hanger around which it is to be fitted;
• The figure 20 is a perspective view similar to the figure 18 but in which the cap is fitted around the rod;
• The figure 21 is a schematic perspective view of an installation step, including item 3 of the figure 5 .

The figure 1 and 2 represent a hanger 10 (also called a spacer) adapted for an embodiment in accordance with the present invention and making it possible to fix in an adjustable manner a support section of a lining partition at a distance from a wall to be lined by a thermal insulator.

This hanger 10 comprises a fixing plate 20 extending, at a rear end 11, by a main longitudinal rod 30 ending at a front end 12 by a point 32. Typically the hanger 10 measures a few centimeters to a few tens of centimeters, preferably between approximately 10 cm and 40 cm, for example 20 cm, the rod alone measuring approximately 15 cm in this case.

The tip 32 of the rod 30 has indentations 33 evenly distributed over its periphery.

The rod 30 consists of a metal core (not visible), for example a threaded rod, covered by overmoulding with a thin layer of plastic material 31.

The hanger 10 also comprises a radial stop ring 50 formed by a ring of non-deformable overmolded plastic material (that is to say non-elastic). Advantageously, the external diameter of this ring 50 is greater by a few millimeters than that of the rod 30, for example from 0.5 to 3 mm and preferably from around 1 to 2 mm.

The fixing plate 20 comprises two fins 22 erected radially on the rod 30 and formed in one piece with the latter during the overmoulding of plastic material. Each fin 22 comprises a first series of orifices 24 aligned parallel to the rod and two end lugs 25 each comprising an orifice 26 farther from the rod than the first series of orifices 24.

The fixing plate 20 also includes reference marks 28 defining the positioning limits of the hanger 10 on the wall to be lined, for example on a beam such as a rafter. These markers 28 consist of two lines of extra thick plastic material oriented perpendicular to the rod 30 and spaced apart by a few centimeters, for example between 1 and 8 cm, preferably approximately 2 to 5 cm, for example 4 cm. They make it possible to adjust the positioning of the hanger according to the dimensions of the structure on which it is fixed and the thickness of the insulation used.

The hanger 10 finally comprises an independent head 60 (also called cap or key) provided for, in the position of use, to be clipped irreversibly or removable around the rod 30, against the radial stop ring 50.

The head 60 has an end part 61 in the shape of a dome provided with a peripheral groove 62 in which a fur 8 can slide, such as a "C" shaped metal rail of a known type onto which a wall of lining such as plasterboard.

The head 60 is provided with a first annular seal 64 formed on a gripping surface 65 facing the radial stop ring 50 and resting on the latter in the active position of use.

The head 60 is also provided, on the gripping surface 65, with a second annular seal 66 coaxial with the first gasket 64 and disposed substantially at the periphery of said gripping surface.

Each seal 64 and 66 consists of an overmolded elastomer bead protruding from the pinching surface 65 and guaranteeing good airtightness.

The head 60 also has an axial space 68 between the base 63 of the dome 61 and the pinching surface 65, said space 68 measuring between approximately 5 mm and 20 mm, preferably between 10 and 15 mm.

The use of the hanger according to the present invention is done in several stages, illustrated by the figures 5 to 10 .

In the example presented, it will be a question of carrying out an interior doubling of insulation of the roof spaces of a dwelling, in particular its roof.

Initially (tag 1 figure 5 ; figure 6 ) the hanger 10 is fixed cantilevered on the wall to be insulated, in particular on a rafter 5 of the frame. For this, the installer places the plate 20 perpendicular to the side of the rafter 5 and positions it using the pins 28 in order to adjust the length that will protrude from the rafter. The markers 28 thus make it possible to delimit the minimum and maximum positioning distances of the hanger 10 with respect to the edge of the chevron 5, as illustrated by the figures 11 and 12 . Thus, the latter can take all possible positions between these two limits in order to adapt to the conditions of installation of the insulation and of the lining wall without harming its fixing. Beyond the limits, in particular if the hanger 10 protrudes too much from the rafter 5, the attachment may be insufficient, or even come off or break.

Once the plate 20 is positioned, the installer fixes the hanger 10 in the side of the rafter 5 by placing screws (not shown) through the holes 24 and 26. For this, it is advisable to distribute the screws well longitudinally and to either side of the central rod 30. Advantageously, the screws are placed at the ends of each fin 22, that is to say in the holes 26 of the lugs 25. Four screws are sufficient but it is possible to add in the other holes 24 available to reinforce the fixing.

This solution avoids the plates with breakable areas of weakness of the prior art which lacked precision in terms of their adjustment.

The installer repeats these positioning and screwing operations for each hanger 10 all along the various rafters of the wall to be insulated. In order to help align the lines between several rafters, a cord can be temporarily attached (during the line fixing operation) at the level of the front end 12 of a first line, in particular the line closest to a support of the part to be insulated such as a wall. The cord is then unrolled horizontally to the rafter closest to the support of the part opposite to that previously described. A second hanger is then attached to this rafter so that the cord is attached to substantially the same place as for the first hanger so that the two hangers are aligned. The intermediate lines are then positioned using the cord stretched horizontally between the first two lines. Once all the lines are in place, the cord is removed.

Once all the hangers 10 have been fixed, the installer places a first layer of thermal insulation (not shown) between the rafters of the roof spaces of a roof such as a pitched roof. This first layer of thermal insulation can be produced by a mineral wool blanket (of the glass wool and/or rock wool type) having a thickness of 200 mm and adapted to be positioned between the rafters. A second layer of thermal insulation, superimposed on this first layer is described below:

The installer skewers on the hanger a thermal insulator 2 having a thickness of 200 mm, the thermal insulator 2 comprising a glass wool blanket 200 and a coating 201 consisting of metallized aluminum PET on one of the surfaces of the mattress 200, the coating 201 facing the installer on the inside of the attic. The covering 201 has been fixed on the entire said surface of the mattress 200 by an adhesive based on polyethylene (PE). This operation, illustrated by reference 2 of the figure 5 and by the figure 7 , is facilitated by the indented tip 32 of the front end 12 of each hanger 10, in particular when the latter is provided with the cap 80 which pierces the coating 201 without tearing it. The thermal insulation 2 is pushed into the hanger until the stop ring is positioned above the covering. The insulator 2 is then attached to the lines piercing it and held in place by means of the stop rings of each line. Cap 80 is then removed. If the stop rings do not allow the maintenance of the thermal insulation, the installer can then temporarily position a head 60, the time, for example, to fetch a sealing sleeve.

The installer then positions a vapor barrier sealing sleeve 3 pre-provided with a central opening with a diameter slightly smaller than the diameter of the rod, with a difference of 0.5 to 3 mm, for example an opening having a diameter of 11 mm, by plugging it onto the pointed front end 32 of each hanger 10, as represented by the reference 3 of the figure 5 , over there figure 8 and by the figure 21 . The front ends of each hanger are not fitted with either the cap 80 or the support head 60. During this operation, it is important to ensure that the sealing sleeve 3 does not protrude through the radial stop ring 50 against which he must lean. Given the intrinsic elasticity of the material constituting the sealing sleeve 3, the opening closes around the rod 30 by matching its shapes. The adhesive layer of the sleeve makes it possible to fix the sleeve both on a portion of the rod 30, on the stop ring 50 and on the coating of the thermal insulation 201. All this contributes to good thermal insulation as well as a good vapor barrier.

The sealing sleeve 3 being placed, the installer clips the head 60 of each hanger 10 on its rod 30, which, moreover, will block the sealing sleeve. During this operation, illustrated by reference 4 of the figure 5 and by the figure 9 , the pinching surface 65 comes into contact with the sealing sleeve 3 and forms, with the radial stop ring 50, a locking jaw. Thus, the sealing sleeve 3 is sandwiched between the non-deformable radial stop ring 50 and the gripping surface 65 of the head 60 on a continuous contact surface. The two seals 64 and 66 of the pinching surface 65 of the head 60 prevent heat loss (cool or hot air). In particular, the smallest peripheral seal 64 is substantially of the same external diameter as that of the radial stop ring 50 so as to properly trap the sealing sleeve 3 between them.

The installer can, before the placement of the furs, provide the seal between the thermal insulators, with an adhesive tape fixed on the respective coatings and covering the interface between the thermal insulators as well as the interfaces between the insulators insulation and the walls or other supports of the wall by a sticky strip, one part of which is fixed by the adhesive layer of the sticky strip on the coating of the thermal insulation and the other half is fixed to the wall by an elastic sealant, the strip adhesive covering the interface between the thermal insulation and the wall.

With the liner, sticky strip, and sealing sleeve having a similar metallic gray color, the overall appearance of the system is substantially consistent to the eye.

As a final step, once all the heads 60 have been clipped onto the rods 30 of the hangers 10, the installer can position known type "C" shaped furrings 8 (also called support rails) by inserting the branches of the "C" into the peripheral groove 62 of each head, as shown in reference 5 of the figure 5 and on the figure 10 .

Before screwing the BA13 (or other) type plasterboards onto the metal rails 8, it is possible to use the axial space 68 to position various electrical cables or water pipes without damaging the thermal insulation as well than the sealing sleeve 3.

It will be noted that the vapor barrier coating of the thermal insulation, as well as the sealing sleeve, are arranged at a distance from the rails, and therefore from the facing plates. The void zone provided between the vapor barrier coating and the rails/plasterboards also significantly improves the thermal and/or acoustic insulation of the lining and therefore of the room to be insulated.

Thus, thanks to the present invention, it is possible to thermally and/or acoustically insulate a wall such as a wall, a framework or a ceiling, using hangers 10 that are easy to use, robust and adjustable. Due to the design of these hangers 10, the thermal insulation 2 is held perfectly in place. The presence of a vapor barrier coating attached to a surface of a mineral wool blanket facilitates laying while reducing the installation time of the insulation system. The vapor barrier coating and the sealing sleeve 3 is also positioned in an optimized manner to guarantee good insulation. The axial space 68 of the head 60 makes it possible to place various cables or pipes and to modify them or add/remove them if necessary without the risk of perforating the vapor barrier coating and the sealing sleeve. Finally, this hanger 10 is adapted to the usual support rails, for example rails of the F45 and/or F47 type.

According to a variant embodiment illustrated by the figures 13 to 17 , the head 60 can be removably fixed to the rod 30 of the hanger 10.

To this end, the head 60 is provided with through radial openings 67 and 69 intended to receive a key 70 illustrated in detail on the figure 16 ). More precisely, the head 60 comprises in its structure, at the level of the axial space 68, a first inlet opening 67 and, on the opposite side, two smaller outlet openings 69 aligned with the inlet opening 67 The inlet opening 67 is substantially wider than the total width of the two outlet openings 69.

When the installer wishes to complete the installation of a hanger 10 whose rod is fixed to a rafter as described above, he mounts the head 60 on the end of the rod 30 in order to bring the pinching surface 65 into abutment. with the radial stop ring 50, then he introduces the key 70 into the inlet opening 67. The branches 72 of the key being elastically deformable, they diverge radially when the rod 30 then come to close around the latter before emerging from the head 60 through the outlet openings 69.

More specifically, the key 70 comprises a hollow inner portion 75 of circular section which encloses the rod 30, which for this purpose has substantially the same diameter.

Thus the head 60 is locked axially on the rod 30 so that it is then possible to mount the support rails of the insulation plates.

An alternative embodiment of the hanger in accordance with the invention is the subject of the figure 18 . As can be seen, plate 20 has two end position markers 28 between which three other intermediate markers 29 are provided, the distance between two consecutive markers always being the same. In the example shown, the two extreme markers are arranged 4 cm apart so that each space between two consecutive markers is 1 cm, which allows finer adjustment during installation.

In accordance with figure 19 and 20 , the hanger 10 also comprises a removable cap 80 in the shape of an ogive intended to be positioned around the indented tip 32 of the rod 30 to facilitate plugging in of the insulation. To this end, the cap 80 comprises a pointed hollow barrel 81 having, at its base, a maximum external diameter identical to or slightly less than that of the radial stop ring 50, and a very pointed end 82. The outer diameter of the cap is such that it gradually increases from the tip to its base without the diameter being greater than the diameter of the ring. Furthermore, the tip of the cap is more pointed than that of the front end of the rod in order to facilitate piercing of the insulation blanket and of the coating while avoiding tearing of the thermal insulation coating.

In addition, so that the cap 80 can be held in position during racking-in, the latter comprises protrusions 83 extending radially inside the barrel 81 in order to cooperate with the outer surface of the front end 12 of the rod 30 once said cap 80 is mounted around it bearing against the radial stop ring 50 (see figure 19 ). Finally, the cap 80 is also provided, on its outer surface, with gripping notches 85 to facilitate its removal, said notches being for example arranged on either side of the barrel 81. The cap is removed after the installation of the thermal insulation and can be reused on another hanger not provided with thermal insulation.

Claims (9)

1. System for insulation and vapor barrier sealing of a room to be insulated comprising:

   - a hanger device (10) adapted to be fixed on a support (5), in particular a rafter, the hanger device comprising a rod (30) extending in an axial direction up to a front end (12), and designed to pierce a thermal insulator (2); and

   - a thermal insulator comprising a mat (200) comprising a mineral wool and a vapor barrier layer (201), the vapor barrier layer being fixed by an adhesive on a main surface of the mat; and

   - a head (60) designed to be attached to the front end of the rod and designed to receive a batten profile (8), in particular a metal batten profile; and

   - a portion of a vapor sealing sleeve (3) adapted to be fixed on an internal surface of the vapor barrier layer of the thermal insulator, in particular at the periphery of the rod, so that the vapor sealing sleeve provides a vapor barrier seal between the thermal insulator and the interior of the room to be insulated;

   the vapor sealing sleeve (3) comprising a an adhesive layer designed to be fastened on to the internal surface of the vapor barrier layer.
2. System for insulation and vapor barrier sealing of a room to be insulated comprising:

   - a hanger (10) fixed to a support (5), in particular a rafter, the hanger comprising a rod (30) extending in an axial direction up to a front end (12) and piercing a thermal insulator (2) , the front end of the rod projecting beyond the thermal insulator on the inside of the room to be insulated; and

   - the thermal insulator comprising a mat (200) comprising a mineral wool and a vapor barrier layer (201), the mat and the vapor barrier layer each comprising an interior surface and an exterior surface, the exterior surface of the vapor barrier layer being fastened by means of an adhesive onto the interior surface of the mat, the vapor barrier layer of the thermal insulator being positioned on the inner side of the room to be insulated; and

   - a vapor sealing sleeve (3), a portion of which is fixed to the interior surface of the vapor barrier layer of the thermal insulator, in particular at the periphery of the rod, so that the vapor sealing sleeve provides a vapor sealing seal between the exterior surface of the thermal insulator and the interior of the room to be insulated; and

   - a head (60) attached to the front end of the rod and designed to receive a batten profile (8), in particular a metal batten profile, and

   wherein the vapor sealing sleeve (3) comprises an adhesive layer fixed on the interior surface of the vapor sealing layer (201).
3. System according to any of the preceding claims, wherein the sealing sleeve (3) comprises a pre-cut opening, in particular a circular central opening, the opening having a diameter:

   - substantially equal to the diameter of the rod; or

   - less than the diameter of the rod.
4. System according to any of the preceding claims, wherein the sealing sleeve (3) comprises at least one of the following features:

   5.1 the sealing sleeve has an area of less than 250 cm², preferably less than 150 cm², in particular less than 100 cm²;

   5.2 the sleeve is substantially square in shape with a length of less than 15cm, less than 12cm, or less than 10cm;

   5.3 the sealing sleeve has a thickness in the range 5-600 µm;

   5.4 the sealing sleeve comprises a removable release layer covering the adhesive layer.
5. Insulation system according to any of the preceding claims, wherein the hanger device (10) comprises a radial abutment ring (50), in particular a radial abutment ring formed in one piece with the rod (30) and adapted to define an abutment position of the head and wherein preferably the radial abutment ring (50) and the head (60), in particular a hollow head, are designed to form, in the active position of use, a blocking jaw.
6. Insulation system according to any of the preceding claims, wherein the vapor barrier layer comprises at least one of the following features:

   6.1 the vapor barrier layer comprises a continuous sheet of a plastic material, in particular a material selected from the group of polyesters and/or polyolefins;

   6.2 the vapor barrier layer has a thickness in the range of 5-100 µm, preferably in the range of 5-30 µm;

   6.3 the vapor barrier layer comprises a metallized plastic layer, more specifically a layer comprising aluminium;

   6.4 the vapor barrier layer is attached to the mat by means of an adhesive, the adhesive being a hot-melt adhesive, in particular an adhesive comprising a polyethylene.
7. Method for installing a system for insulation and vapor barrier sealing of a room to be insulated, comprising, notably in the following order, the steps of:

   - fixing a hanger device (10) onto a support (5), the hanger device comprising a rod (30) extending in an axial direction up to a front end (12) towards the interior of the room to be insulated, the end of the rod being in particular pointed;

   - optionally mounting a cap (80) on the front end of the hanger rod before piercing the thermal insulator with the hanger rod;

   - installing a thermal insulator (2), comprising a mat of mineral wool (200), itself comprising a vapor barrier layer (201) fixed by an adhesive onto a main surface of the thermal insulator, so that the rod of the hanger device pierces the thermal insulator, the end of the rod projecting beyond the interior surface of the vapor barrier layer of the thermal insulator;

   - removing the cap optionally mounted on the front end of the rod of the hanger device;

   - fixing a portion of a vapor sealing sleeve (3) on the inner surface of the vapor barrier layer of the thermal insulator, more specifically at the periphery of the rod, in such a way that it provides a vapor seal between the exterior surface and the interior of the room to be insulated and wherein the vapor seal comprises an adhesive layer fixed to the interior surface of the vapor barrier layer; and

   - positioning a head (60) at the end of the rod, the head being designed to receive a batten profile (8), more specifically a metal batten profile.
8. Method according to claim 7, wherein positioning the head (60) at the end of the rod comprises pinching the sealing sleeve between a radial abutment ring (50) and the support head, the radial abutment ring being formed in one piece with the rod and defining an abutment position of the support head.
9. Method according to claim 8 or 9, further comprising the step of providing a vapor barrier seal:

   - between two adjacent thermal insulation elements by means of an adhesive tape along the interface between the two thermal insulation elements, the adhesive tape being positioned on the interior surface of the vapor barrier layer of each thermal insulation element; and or

   - between the thermal insulator and an adjacent support of the room to be insulated by means of an adhesive tape along the interface between the support and the thermal insulator, a first portion of the adhesive tape being fixed on the interior surface of the vapor barrier layer of the thermal insulator and a second portion of the adhesive tape being fixed onto the support.

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