FR3051713A1 - - Google Patents

Abstract

Disclosed is a self-adhesive, lightweight constructional multilayer material that provides thermal or acoustic insulation including a coating layer, a coating bonding layer comprising an adhesive film, at least one solid foam layer, and an adhesive face layer. The solid mass layer (2) comprises a solid foam of gas trapped in thermoplastic cells (3) and the adhesive face layer (5) has a self-adhesive adhesive face. A coating layer (1) has thermal reflection or other properties and the adhesive face layer (5) is protected by a release film (6) before installation. The material is cut into the required dimensions before removing the non-stick film (6) and gluing the material with a slight pressure to apply the adhesive face layer (5) to the region to be insulated.

Description

Closed-cell solid foam insulation material self-adhesive

Introduction

The present invention relates to a multilayer acoustic or thermal insulation sheet material, in particular a multilayer acoustic or thermal insulation sheet material adapted for use on pipes and ducts for heating, ventilation, air conditioning.

It is known that equipment or noisy environments must be isolated in order to limit the noise around them. Typical examples include rooms containing engines or pipes or ducts that pass through living or working spaces. The purpose of isolation is to limit the transmission of sound waves to the external environment. For this purpose, various insulating materials are marketed which can be fixed in place around the equipment, pipe or local emitting sounds. Typically, the insulating material is a multilayer laminate containing mineral wool or the like to produce the sound damping effect. Such laminated panels are secured with wire mesh, bandage and associated fasteners such as wall outlets and screws. This type of product is known and has several limitations. The main limitations are that the acoustic panels are large, heavy, difficult to handle and are not easily installed.

Fixing in place requires special skills and, since performance is reduced if the panels are not properly adjusted, the possibility of easy insulation adjustment during a final inspection of the work would be very desirable.

The need for thermal insulation is also a widespread need to reduce heat flow, while limiting insulation heating or cooling requirements between isolated isolation environments. Commercial solutions are numerous and building regulations often require a certain level of thermal insulation, for example in new buildings.

Although acoustic insulation is available in many forms, there is a continuing need to provide such insulation with a wider spectrum of sound frequency reduction, lighter weight and easier to install. In particular, although acoustic insulation may be suitable for a specific application in general building applications, it is preferable that the acoustic insulation operate in a wide spectrum of wavelengths and this is not often achieved.

Another aspect of the insulation materials is the use as a barrier against combustion by imparting flame retardancy. This generally comprises a set of requirements different from those for thermal insulation and sound insulation. Specifically, a balance between providing a low mass of flammable product and a higher mass for absorbing sound is required.

The aforementioned insulation problems for reducing acoustic, thermal and fire transmission are well known and, in the construction of associated buildings and services, a wide range of different insulation materials have been marketed in accordance with the invention. particular property balance required.

In the present case, there is a particular need for improved insulation for use in a riser of a building. A riser is a vertical shaft through a part of the building, for example from the top to the bottom of the building, which performs the functions of distributing services such as gas, water, electricity and the fall pipe. A fall pipe is a large-diameter pipe for channeling wastewater from a building. The insulation for use in this situation has several requirements, thermal insulation is important to stop condensation, for example from the air of hot buildings against cold input services such as water or gas. It is also important to provide protection against water so that, if a leak, for example in a water inlet or a fall pipe occurs, the electrical wiring is protected or at least the water passes not outside the insulation on the water pipe. Low gas permeability is also useful for channeling any minor leakage of gas along the length of the pipe to a location where it can exit a structure, which is also applicable to a drop pipe in which minor leaks occur. can lead to unwanted odors.

In addition, insulation for use in the specific environment must be easily applied, risers are generally kept to a minimum size since they do not provide usable space in the building for occupants and the installation of side-by-side services by different providers, such as plumbers and electricians means that insulation may need to be applied retrospectively for all services in a confined space.

Another problem is that the insulation must be robust so that it is not easily broken or torn during application or removal and reapplication that may be necessary in the event of maintenance. A typical metal sheet is easily torn and the adhesive compositions have a relatively high adhesion. Therefore, there is a need for a mechanically robust insulation material.

Similarly, regular maintenance may require that the insulation is easily removed and reapplied.

Therefore, there is a need to form an insulation which has an advantageous combination of features such as reduced bulk, light weight, easy application and easy removal and reapplication. The material must have, according to the application, a combination of acoustic and thermal inhibitory properties against water and gases with regular fire resistance properties.

A problem frequently encountered when applying self-adhesive materials is that improper positioning or unsuitable smoothing can lead to unsightly clumps and folds which, in the case of self-adhesive insulation can lead to insulation. less efficient. Therefore, it is desirable to provide a self-adhesive material that can be peeled off without damage, and adjusted before reapplication. This would limit the losses resulting from the release of material that has been removed and would contribute to the effectiveness of the material by facilitating its proper application.

In view of the above, although some forms of insulation may be excellent in specific aspects, there is still a need for improved and new forms of insulation with a broad spectrum of effectiveness. The physical robustness of the insulation is also important.

A form of material that is widely used in packaging but also has uses in insulation is called "bubble film", this material comprises a plastic sheet on which are regularly distributed raised cells of flat cylindrical shape containing air . The raised cells are arranged in a regular pattern having a given dimension and are spaced apart from each other.

Physical isolation structures associated with the present invention have been described. US 2014/0199537 discloses a foam material with an adhesive side and a foil foil blanket. The present invention represents optimizations of this general technology, particularly for use in building construction. JPH09210291 discloses a pipe with integrated insulation that incorporates bubble layer insulation to limit heat transmission and JPH0989357 discloses a material for forming a pipe also comprising a layer of bubbles for sound insulation purposes. DE2307559 describes an insulation incorporating an adhesive tape, but it is designed to be wound on pipes and is difficult to use and apply correctly. US 8343614 discloses a metallized polymeric film reflective insulating material for insulation of packaging, vehicles or buildings but gives no particular indication with regard to installation problems. FR 2011059895 discloses a repositionable acoustic insulation for floors using natural felt fibers to produce the acoustic reduction.

Another problem that arises is that insulation placed on a pipe or pipe during installation is removed, broken or damaged during maintenance or by general wear and tear. Since replacing the insulation can be a complex task, and at least time-consuming and difficult, if it is not immediately replaced by personnel during maintenance. This means that areas that may have been isolated at a high level initially become progressively less isolated over time if the insulation can not be reapplied or is not adequately adapted for easy replacement.

Therefore, there is a need, to which the present invention responds, to provide an easily installed, lightweight acoustic or thermal insulation that meets the same performance criteria as existing products with respect to the properties mentioned above, but in a Broad spectrum of insulation properties, which can be easily removed for better positioning, can be reapplied after a while or to allow access to the isolated area. In addition, while providing effective insulation properties, the material is also preferably mechanically robust in terms of tensile strength and resistance to flex cracking.

Description of the invention

The present invention in its various aspects is as described in the appended claims.

The present invention relates to a multilayer sheet material for producing acoustic and thermal insulation, the material comprising the following layers: a) a coating layer adhered by, b) a coating bonding layer (4), comprising an adhesive film, at ; c) one or a plurality of closed cell solid foam layers (2) comprising cells filled with deformable thermoplastic gas (3) in the form of a solid foam and said layer is bonded to; d) an adhesive face layer (5) having a self-adhesive adhesive face; which is in contact with e) a peelable protective release paper or film (6) for use, in use, to be peeled off to expose the self-adhesive adhesive side, for example for adhesion to a surface to be insulated.

Solid foam (characteristic c)

Solid foam is produced by gas bubble formation in a liquid which is then solidified to trap the gas in the cells. Solid means solid as opposed to liquid or gaseous rather than rigid. The foam is preferably flexible, as is the case for cellular polyethylene.

Closed cell foam

Closed cell foam is a foam in which there is no communication between the cells. In a closed-cell foam, the gas forms discrete pockets, each of which is completely surrounded by the solid material. Closed cell foam is preferred for thermal insulation since it forms a barrier against convection. Closed cells also have advantages at locations where leakage may occur as no liquid is propagated through the solid foam layer, as may occur in fibrous insulation.

Polydispersed size dispersion

The solid foam layer of the invention may comprise cells that have a polydispersed size distribution, i.e. they are of a plurality of different sizes. Reducing the propagation of a broad spectrum of sound, requires the limitation of the transmission of both long and short sound waves. The polydispersed size distribution of cells produced cells of smaller and larger sizes; small cells are preferable for thermal insulation while acoustic performance is enhanced by larger cell sizes. A polydispersed size distribution in the solid foam layer is a convenient way to provide smaller and larger cells in a single layer. Such foams are preferably formed by extrusion in a single operation.

The solid foam layer, as produced by extrusion of entrained air in a polymer, preferably comprises cells which are generally described as an irregular polyhedron. Such cells have a minimal wall size and are, therefore, lighter. The preferred cells of the present invention are elongate, such as an elongated polyhedron, so as to have two dimensions, for wider spectrum sound inhibition. The dimensions can be measured by cutting a cross-section through the foam and measuring the exposed dimensions as well. In the context of the present invention, the dimensions of such cells are defined by measurement along a randomly placed cross section (for example, obtained by cutting the material with a sharp knife) and in the plane of this cross-section. . For the sake of consistency, the cut cross-section is chosen to be perpendicular to the plane of the coating layers. A 20x binocular microscope with a reticle is used. 90% is 90% in number of 100 adjacent cells.

The cell may be partially elongated, if elongated, 90% of the elongated cells of the present invention may have a longest dimension of 1.5 to 3 times the shortest dimension, measured as described above for the dimension. the longest. 90% of the cells of the solid foam layer may have a longest dimension of 0.01 to 5 mm, preferably 90% of the cells of the solid foam layer have a longer dimension of 0.5 to 3 mm. For multilayer solid foam embodiments (such as 4 and 5 below), the solid foam layer has the longest dimension of 0.5 to 2.5 mm.

These dimensions are preferred since convective heat transfer in cells is limited, and conduction heat transfer is limited by the heat transfer properties of the gas in the cells.

The solid foam layer of the invention can vary between 2 and 10 mm in thickness and is more preferably between 3 mm and 5 mm, which produces a good balance of performance with respect to the thickness of the material. that is, its volume, in relation to its weight. In some embodiments, more than one solid foam layer, a plurality, may be present, preferably two layers. Indeed, it has been observed that acoustic performance improves with additional layers of solid foam having the same overall thickness, rather than a single layer of thicker foam.

Thermoplastic

The thermoplastic of the solid foam layer is preferably polyethylene. The thermoplastic may incorporate one or more flame retardant additives.

The thermoplastic is deformable, which means that, at 25 ° C, the material can be manually handled without breaking by cracking or permanent deformation during use. This property can be simply that of being intrinsically differentiable from a polyolefin, such as polyethylene.

Gas in a solid foam

The gas entrapped in the closed cell solid foam cells may preferably be air that has good thermal insulation performance and is readily incorporated into the cells. The gas may, more preferably, be nitrogen or argon, so as to improve both the thermal insulation and to avoid supplying oxygen for combustion. The gas may comprise one or more of FE-13, 1,1,1,2,3,3,3-heptafluoropropane, FE-25, haloalkanes, bromotrifluoromethane, trifluoro-iodomethane, NAF P-IV , NAF S-III, NAF S 125, NAF S 227, and Triodide (trifluoro-iodomethane) to impart flame retardancy.

Multilayer construction

The multilayer construction of the sheet material has particular advantages in reducing noise: the reflective sheet layer, the coating bonding layer, the solid foam layer, the adhesive face layer are combined to limit the transmission and acoustic reverberation. Each change of material means that the sound must cross boundaries, attenuating the sound transmission. Solid foam includes a plurality of such limitations. Sound insulators reduce sound transmission while sound absorbers reduce reverberation.

Plurality of layers of foam

The solid foam may be present as a single layer or a plurality, preferably 2, layers of closed-cell solid foam laminated together on a common face (rather than an edge). This is an additional barrier and an improved noise reduction.

Sheet material

The novel characteristics of the sheet material of the present invention produce an insulating material which can be easily handled, for example with a density of less than 250 kg / m 2 (small footprint compared to current products) for a product which has a thickness of 5 mm (small space for the level of insulation obtained) and produces a sound insulation (particularly acoustic broad spectrum) and thermal and a flame retardant, said sheet material is also understood to be lighter, less dense and thinner than existing products for providing an equivalent set of properties. Another advantage is that it is flexible enough to cover small asperities where to fit around corners and the weight of a typical 10 m long roll is within the limits of manual handling legislation to be held to length of arms, which is often necessary when installing insulation in a building, for example in pipes and cavities.

Adhesive face layer, self-adhesive adhesive (characteristic d)

The adhesive face layer is a pressure-sensitive adhesive layer adhered to one side of the solid foam layer and the other side of which is a self-adhesive adhesive face with which the sheet material is adhered to the object to be isolated.

In the present invention, the adhesive face layer may be a relatively thick viscoelastic layer, for example a butyl adhesive or may be a relatively thin adhesive film, such as an acrylic adhesive.

The material has a self-adhesive adhesive side, therefore no additional fastening is required for the installation, which has advantages, since fasteners can act as thermal bridges that reduce thermal efficiency or provide pathways. for the transmission of sound.

Self-adhesive adhesives are characterized by three properties: tackiness which is the ability to bond instantly under light pressure, adhesion which is the ability to withstand shrinkage from a surface and shear strength which is the ability to withstand internal cohesive failure under shear force.

Adhesive type

The adhesive face layer may be a viscoelastic layer (for example, Embodiments 1, 2 and 4), preferably whose viscoelastic properties further improve the acoustic performance of the material. A viscoelastic material is a material that has both viscous and elastic properties when deformed. The adhesive face layer may be a butyl polymer; this is typically provided as a thick "putty" type layer and is suitable for adhesion to uneven surfaces, but may reduce the flame retardant characteristics. Advantageously, the adhesives may be hydrophilic adhesives for fixing to plasterboard or a hydrophobic adhesive for attachment to a polyethylene pipe: two common applications of insulation in the construction sector. In embodiments in which the adhesive face layer is a viscoelastic layer, its thickness varies between 0.1 and 1.5 mm and is most preferably between 0.4 and 0.6 mm. Such a thick viscoelastic layer has the advantage of bonding to irregular surfaces and the adhesive base of this layer can deform as a whole to conform to the contours in its thickness range, for example 0.1 to 1 , 5 mm, therefore a thicker layer of 0.4 to 0.6 mm is preferred. A very thick layer can reduce flame retardant characteristics. In embodiments in which the adhesive face layer is a viscoelastic layer, a viscoelastic layer may be a repositionable adhesive.

In other embodiments (e.g., 3 and 5), the adhesive face layer may be an adhesive film. The adhesive film of the adhesive face layer may have a thickness of between 0.01 and 0.2 mm, most preferably between 0.02 and 0.06 mm. In these embodiments, the coating weight of the adhesive film is between 10 and 200 g / m 2 and is preferably between 20 and 50 g / m 2. Preferably, the adhesive film is a water-based acrylic adhesive or a hot-melt resin adhesive. An adhesive film has advantages in that it decreases the weight of the product and imparts improved fire performance and is more preferred where smoother adhesion surfaces are to be used. In particular, the variability between the measurements made on fire resistance tests is reduced so as to obtain a more uniform fire resistance property.

In embodiments in which the adhesive face layer is an adhesive film, the adhesive film may be a repositionable adhesive. Since the application is important, it can be useful for the user that the material can be applied and then removed and repositioned easily without damaging the material, which would cause losses. The repositionable adhesive further allows the insulation to be removed and reapplied at a later date during maintenance operations, for example.

Self-adhesive adhesives are characterized by three properties; tackiness which is the ability to bind instantly under slight pressure, adhesion which is the ability to resist shrinkage from a surface and shear strength which is the ability to resist internal cohesive failure under shear force . The repositionable adhesives have a low peel strength to allow the material to be removed and exhibit stable tack over time. The repositionable adhesive is preferably an acrylate copolymer with a suspension of microspheres. The composition may comprise: 88 to 99 percent by weight of at least one unsaturated vinyl monomer selected from non-tertiary alkyl acrylates; 0.2 to 5 percent by weight of at least one emulsifying monomer and 0 to 10 parts by weight of at least one zwitterionic monomer. US 3922464 discloses a repositionable adhesive and other repositionable adhesives are known to those skilled in the art and are readily available.

The adhesive face layer may have a peel-measured adhesion at 180 ° of a maximum of 225 g and more preferably 30 g. The adhesive can have an adhesion without external pressure after 1 second application of up to 350 g and more preferably in the range of 350 g to 90 g.

A repositionable adhesive face layer has the following properties when tested on No. 304 stainless steel, which has a No. 3 surface finish: peel-measured adhesion at 180 ° maximum of 225 g and pressure-free adhesion external after 1 second of application up to 350 g, and after the day of application, adhesion measured by peeling at 180 ° maximum 250g and adhesion without external pressure up to 400 g. It has been observed that these parameters define a material that is repositionable in the usual sense of this term in this technical field.

More preferably, the repositionable adhesive face layer has the following properties when tested on No. 304 stainless steel, which has a No. 3 surface finish; adhesion measured by peeling at 180 ° from 20 to 40 g and adhesion without external pressure after 1 second application of 80 to 100 g, and after the day of application, adhesion measured by peeling at 180 ° from 20 to 50 g and adhesion without external pressure up to 150 g. These properties give the insulating material excellent repositioning characteristics so that an operator can virtually isolate, return after a certain time (to the extent after a day but, in practice, the adhesion rarely changes significantly after a few days). minutes of adhesion) and reposition a 1-m sheet of material without using excessive force or causing the material (such as test material 1 described below) to crack.

The above measures are related to the International Harmonized Standard for Adhesive Tape Adhesion; method A; as it can be found at http://www.pstc.org/files/public/101.pdf. Those skilled in the art can obtain suitable adhesives by specifying the above parameters and the services for which adhesion is to be made since this chemical basis for this technology is well established.

Coating layer (characteristic b)

In the present invention, the coating bonding layer (4) comprises an adhesive film or may be a viscoelastic layer (as described above, but with a higher adhesion, if it is possible to peel it off). An adhesive film may also be present as an adhesive face layer. The coating-binding layer is preferably irreversibly bonded.

The type of adhesive is generally chosen by those skilled in the art according to the specific surfaces to be bonded and preferred compositions are presently described. The weight of this adhesive film per unit area is also provided.

The adhesive film according to the above criteria can be provided in several ways: for the coating binder layer, this is preferably produced by means of a pre-prepared aluminum foil adhesive strip in which the film adhesive is already attached to the aluminum foil. Techniques for producing such a metal foil and such films are known in the industry and may, for example, be prepared by spraying or extruding an adhesive onto an aluminum foil. Such pre-prepared aluminum foil can then be added to the closed solid foam layer during the production of the multilayer sheet material of the present invention by putting the shape and the metal foil into press contact. This provides a quick and convenient means of deforming part of the material structure of the present invention. In terms of the final product, this has the advantage that irregularities in the solid foam, which consists of a plurality of bubbles, are covered by the pre-prepared aluminum oxide adhesive tape and equalized if the metal foil relatively stiff (eg, 50 μm) is pressed against the solid foam during adhesion so that the solid foam reformates to form a more uniform face, more suitable for presenting a flatter interface with a high contact area so that, if the material is repositioned during use and, in particular, if the two adhesive layers are of the same material as the adhesive layer, the one that will prevail will always be the adhesive face layer as being that which has the contact surface the weaker. In other words, a potential detachment of the material, in use, is reduced.

An adhesive film present as an adhesive face layer is preferably provided in the form of a carrier film (eg, 5 to 50 μm thick), such as polyethylene, to which an adhesive is sprayed or extruded on both sides. This double-sided adhesive tape is then provided with the peelable protective layer and also adhered to the nonwoven fibrous material, this has the advantage that the irregularities in the fibrous nonwoven material, which is made of a plurality of fibers randomly oriented, are covered by the support film and, to some degree, leveled if the support film is pressed against the nonwoven fibrous material during adhesion so that the fibrous nonwoven material is reformed to forming a more uniform face, more adapted to present a flat adhesive face layer for subsequent adhesion during use, which produces a more uniform adhesion to surfaces on which the material is applied.

Weight and thickness of the cladding layer (characteristic b)

The coating binder layer may be a viscoelastic layer, preferably whose viscoelastic properties further improve the acoustic performance of the material. A viscoelastic material is a material that has both viscous and elastic properties when deformed. The adhesive face layer may be a butyl polymer; this is typically provided as a thick "putty" type layer and is suitable for adhesion to uneven surfaces, but may reduce the flame retardant characteristics. Advantageously, the adhesives may be hydrophilic adhesives for fixing to plasterboard or a hydrophobic adhesive for attachment to a polyethylene pipe: two common applications of insulation in the construction sector. In embodiments in which the adhesive face layer is a viscoelastic layer, its thickness varies between 0.1 and 1.5 mm and is most preferably between 0.4 and 0.6 mm. Such a thick viscoelastic layer has the advantage of bonding to irregular surfaces and the adhesive base of this layer can deform as a whole to conform to the contours in its thickness range, for example 0.1 to 1 , 5 mm, therefore a thicker layer of 0.4 to 0.6 mm is preferred. A very thick layer can reduce flame retardant characteristics.

Alternatively, an adhesive film coating bonding layer, located between the coating layer (such as the metal foil) and the solid foam layer, provides the bonding of the coating layer to the solid foam layer. . The adhesive film has a thickness of between 0.01 and 0.2 mm and is most preferably between 0.02 and 0.06 mm. The coating weight of the adhesive film is between 10 and 200 g / m 2 and is preferably between 20 and 50 g / m 2. Preferably, the adhesive film is a water-based acrylic adhesive or a hot-melt resin adhesive. The adhesive film provides adhesion between the coating layer and the solid foam layer but has a low weight and improved flame retardant properties. It is believed that additional voids disposed between the film and the solid foam layer also contribute to the thermal and acoustic properties of the multilayer sheet material.

Additional adhesive films may also be present between the first solid foam layer and a second solid foam layer and additional solid foam layers. If present, the additional adhesive films have a thickness of between 0.01 and 0.2 mm and are most preferably between 0.02 and 0.06 mm. The coating weight of the additional adhesive films is between 10 and 200 g / m 2 and is preferably between 20 and 50 g / m 2. Preferably, the adhesive films are a water-based acrylic adhesive or a hot-melt resin adhesive. Preferably, the additional adhesive films have the same properties as the coating tie layer adhesive film to facilitate manufacture.

Coating layer (characteristic a)

The coating layer is an outer layer when the sheet material has been adhered to an object to be isolated. The coating layer has a thickness of between 10 and 500 μm. The coating layer may be a metal foil layer such as aluminum, in which case the foil may have a thickness of between 50 and 200 μm. The coating layer may be a protective coating layer. The coating layer may be chosen to have particularly desirable properties, such as protective properties for the construction such as: flame retardancy, thermal reflection (preferably having a glossy metallic finish), chemical resistance or water resistance to incorporate these requirements into the construction without the need for an additional product. A metal foil layer is particularly advantageous because it decreases heat transmission by reducing the emissivity of the material when provided with a shiny and reflective outer metal finish and further has flame retardant properties. The metal foil layer may be a laminated construction. Such a laminate may comprise a polyester on the surface bonded to the solid foam layer. The polyester layer may preferably be poly (ethylene terephthalate). The metal sheet may have a lacquer on its outer surface. The lacquer may preferably be a nitrocellulose lacquer. The metal foil can combine a lacquered surface and a polyester layer. The laminated construction of the metal sheet provides tensile strength to the metal foil of the coating layer, and provides effective bonding to the next layer. The lacquered surface avoids the galvanic corrosion that occurs when the aluminum layer comes in contact with another metal. A combination of both coatings advantageously has improved tear strength.

Peelable release paper or film (characteristic e)

In order to protect the adhesive side, a peelable protective non-stick polymer paper or film is included as an additional layer on the adhesive side of the adhesive layer. The nonstick paper or film may be a polypropylene film. The release paper or film may be surface treated, preferably with a silicone release agent and most preferably a methylsilicone release agent. This layer allows the user to expose the adhesive face of the product in use immediately prior to installation, which is convenient and the adhesive layer adheres in situ when required.

Advantages of the roll form

In order to facilitate handling and use, the layered material may be provided in the form of a roll. This has the advantage of providing a large amount of material while remaining easy to store and handle. The roll is preferably presented so that the peelable protective release paper or film is on the outer surface of the roll, so as to facilitate application by allowing the application of the insulation material as the material is place. This is particularly true for the present invention since, by placing the non-expandable metal sheet on the inner side, the side that is stretched is the adhesive side and when wound on a flat surface, or even on a surface curved, such as a pipe or tube, this then produces a higher surface adhesive for better adhesion, particularly when an adhesive film is used, and an adhesive film which is stretched entirely flat is not necessarily a optimal bonding surface when exposed to rough surfaces such as those encountered in building construction. As part of this preferred form of roll, the release film has a creped texture. This texture allows winding with the external adhesive side without dividing the film or pleating the aluminum foil.

Kit

Another aspect of this invention is a kit of isolation components, incorporating the multilayer material associated with a similar material in a form of adhesive tape to secure the edges and cover any spacing.

Additional coating layer

Another type of embedding layer allows acrylic paint to be applied directly to the surface at locations where it is desirable to obtain a painted finish to match an existing decor. This solves the problem of existing insulations that do not allow the application of water-based paints. Such a layer is the outer layer in any laminate and is the outer layer of the total sheet material. The layer may be a polyester construction mentioned above, modified to increase hydrophilicity; this having an angle of contact with water at 25 ° C between 10 and 80 °. The invention further comprises a method of isolating an object in which the currently described sheet material is cut to size and applied with slight pressure to the object.

SPECIFIC DESCRIPTION

Embodiments of the present invention are described hereinafter with reference to the drawings in which:

Fig. 1 shows a cross-section of the material of Embodiment 1 and Embodiment 2.

Fig. 2 shows a cross-section of the material of Embodiment 3 and Embodiment 4.

Figure 3 shows a roll of the material as supplied to a construction site.

Embodiment 1

This embodiment of the multilayer sheet material comprises a coating layer (1) which in this exemplary embodiment is an aluminum sheet selected for its thermal reflection characteristics. The thickness of the aluminum foil is 50 μm and this thickness contributes to the sound attenuation properties of the material. The aluminum foil itself is a laminate construction comprising a nitrocellulose lacquer on the outer surface and a polyethylene surface on the reverse side. This aluminum foil layer (1) is bonded to a polymer coating bonding layer, a viscoelastic butyl polymer (4) which is bonded to the first surface of a solid foam layer (2). The solid foam layer consists of polydisperse irregular polyhedral cells (3) containing air; the walls of the cells (3) are formed of polyethylene. The cells are distributed continuously throughout the solid foam layer; the cells have an average size of between 1 and 4 mm, preferably between 2 and 2.5 mm. For irregularly shaped cells, size is the maximum dimension. In this embodiment, the thickness of the solid foam layer is approximately 3 mm.

The second surface of the solid foam layer (2) is adhered to a viscoelastic butyl polymer layer and then to an adhesive face layer having a self-adhesive adhesive face (5) which in this embodiment is an adhesive repositionabie of a type known in the art of self-adhesive adhesives.

Another layer on the surface of the adhesive face layer (5) is a non-stick film (6) of a type known in the art of adhesive stickers, allowing the release film (6) to be peeled off easily to expose the diaper adhesive face (5) immediately before installation. The non-stick film (6) is polypropylene and has been treated with a silicone release agent, which has a creped texture.

The material may be provided in rolls as described in Figure 2, which is convenient for handling purposes. The rolls are presented so that the peelable film is on the outer face of the roll to facilitate the application of the material. For the embodiment described above, with a roll 10 m long and 1 m wide, for a thickness of 5 mm, the weight of a roll is typically 18 kg, a weight that is in the low risk area a risk assessment of manual handling for transport and lifting on the basis of 2 lifts per hour (as defined in the UK Government brochure INDG383 06/14). In addition, it is the low weight of the multilayer material that allows it to be secured using a conventional repositionable adhesive, as described in the above embodiment, which has significant advantages in terms of ease of use. application.

The person using the material cuts the required size of material from the roll. The nonstick paper (6) is peeled from the material at the top edge of the material to be installed and the adhesive face (5) is presented on the wall or pipe to be insulated. When the top edge is glued in place, the rest of the nonstick paper (6) is removed and the entire panel is smoothed and glued to the wall or pipe. If the quality of the application is considered insufficient, the material can be peeled off and reapplied.

Similar panels are cut and glued side by side so as to cover the entire required area and an adhesive strip is used to secure the joints. The adhesive tape having the same construction as the present invention can be used which has an advantage of maintaining thermal acoustic performance if spacings have been left during the installation phase, or for small complex areas it may be more It is convenient to use a band 5 to 10 cm wide.

The actual operating temperatures of the present embodiment are in the range of -30 ° C to +150 ° C.

Embodiment 2

With reference to FIG. 1, this embodiment of the multilayer sheet material comprises a coating layer (1) which, in this exemplary embodiment, is an aluminum sheet chosen for its thermal reflection characteristics. The thickness of the aluminum foil is 50 μm and this thickness contributes to the sound attenuation properties of the material without undesirably reducing flexibility. The aluminum foil itself is a laminate construction comprising a nitrocellulose lacquer on the outer surface and a polyethylene surface on the reverse side. This layer of aluminum foil (1) is bonded to an adhesive film (4) which is bonded to the first surface of a solid foam layer (2). The solid foam layer consists of polydisperse irregular polyhedral cells (3) containing air; the walls of the cells (3) are formed of polyethylene. The cells are distributed continuously throughout the solid foam layer; the cells have an average size of between 1 and 4 mm, preferably between 2 and 2.5 mm. For irregularly shaped cells, size is the maximum dimension. In this embodiment, the thickness of the solid foam layer is approximately 3 mm.

The second surface of the solid foam layer (2) is bonded to a viscoelastic butyl polymer layer (5) which has a self-adhesive adhesive face layer.

Another layer on the surface of the adhesive face layer (5) is a non-stick film (6) of a type known in the art of adhesive stickers, allowing the release film (6) to be peeled off easily to expose the diaper adhesive face (5) immediately before installation. The non-stick film (6) is polypropylene and has been treated with a silicone release agent, which has a creped texture.

Embodiment 3

With reference to FIG. 1, this embodiment of the multi-layer sheet material comprises a coating layer (1) of aluminum foil. The thickness of the aluminum foil is 50 μm. The aluminum foil itself is a laminate construction comprising a nitrocellulose lacquer on the outer surface and a polyethylene surface on the reverse side. This layer of aluminum foil (1) is bonded to an adhesive film (4) which is bonded to the first surface of a solid foam layer (2). The solid foam layer consists of polydisperse irregular polyhedral cells (3) containing air; the walls of the cells (3) are formed of polyethylene. The cells are distributed continuously throughout the solid foam layer; the cells have an average size of between 1 and 4 mm, preferably between 2 and 2.5 mm. For irregularly shaped cells, size is the maximum dimension. In this embodiment, the thickness of the solid foam layer is approximately 3 mm.

The second surface of the solid foam layer (2) is adhered to an adhesive film having a self-adhesive adhesive face (5), the adhesive optionally being a repositionable adhesive.

Another layer on the surface of the adhesive face layer (5) is a non-stick film (6) of a type known in the art of adhesive stickers, allowing the release film (6) to be peeled off easily to expose the diaper adhesive face (5) immediately before installation. The anti-adhesive film (6) is polypropylene and has been treated with a silicone release agent, which has a creped texture. This texture allows winding with the external adhesive face, as is preferred, and as mentioned above.

Embodiment 4

With reference to FIG. 2, this embodiment of the multilayered sheet material comprises a coating layer (1) of aluminum foil. The thickness of the aluminum foil is 50 μm. The aluminum foil itself is a laminate construction comprising a nitrocellulose lacquer on the outer surface and a polyethylene surface on the reverse side. This layer of aluminum foil (1) is bonded to an adhesive film (4) which is bonded to the first surface of a first layer of solid foam (2). The first layer of solid foam consists of polydispersed irregular polyhedral cells (3) containing air; the walls of the cells (3) are formed of polyethylene. The cells are distributed continuously throughout the first layer of solid foam; the cells have an average size of between 1 and 4 mm, preferably between 2 and 2.5 mm. For irregularly shaped cells, size is the maximum dimension. In this embodiment, the thickness of the first solid foam layer is approximately 3 mm.

The second surface of the first solid foam layer (2) is adhered to an adhesive film (7) which is bonded to the first surface of a second solid foam layer (20). The second layer of solid foam is polydisperse irregular polyhedral cells (3) containing air; the walls of the cells (3) are formed of polyethylene. The cells are distributed continuously throughout the second layer of solid foam; the cells have an average size of between 1 and 4 mm, preferably between 2 and 2.5 mm. For irregularly shaped cells, size is the maximum dimension. In this embodiment, the thickness of the second solid foam layer is approximately 3 mm.

The second surface of the second layer of solid foam (2) is adhered to an adhesive film having a self-adhesive adhesive face (5).

Another layer on the surface of the adhesive face layer (5) is a non-stick film (6) of a type known in the art of adhesive stickers, allowing the release film (6) to be peeled off easily to expose the diaper adhesive face (5) immediately before installation. The non-stick film (6) is polypropylene and has been treated with a silicone release agent, which has a creped texture.

Embodiment 5

With reference to FIG. 2, this embodiment of the multilayered sheet material comprises a coating layer (1) of aluminum foil. The thickness of the aluminum foil is 50 μm. The aluminum foil itself is a laminate construction comprising a nitrocellulose lacquer on the outer surface and a polyethylene surface on the reverse side. This layer of aluminum foil (1) is bonded to an adhesive film (4) which is bonded to the first surface of a first layer of solid foam (2). The first layer of solid foam consists of polydispersed irregular polyhedral cells (3) containing air; the walls of the cells (3) are formed of polyethylene. The cells are distributed continuously throughout the first layer of solid foam; the cells have an average size of between 1 and 4 mm, preferably between 2 and 2.5 mm. For irregularly shaped cells, size is the maximum dimension. In this embodiment, the thickness of the first solid foam layer is approximately 3 mm.

The second surface of the first solid foam layer (2) is adhered to an adhesive film (7) which is bonded to the first surface of a second solid foam layer (20). The second layer of solid foam is polydisperse irregular polyhedral cells (3) containing air; the walls of the cells (3) are formed of polyethylene. The cells are distributed continuously throughout the second layer of solid foam; the cells have an average size of between 1 and 4 mm, preferably between 2 and 2.5 mm. For irregularly shaped cells, size is the maximum dimension. In this embodiment, the thickness of the second solid foam layer is approximately 3 mm.

The second surface of the second layer of solid foam (2) is bonded to a layer of viscoelastic butyl polymer which has a self-adhesive adhesive face (5).

Another layer on the surface of the adhesive face layer (5) is a non-stick film (6) of a type known in the art of adhesive stickers, allowing the release film (6) to be peeled off easily to expose the diaper adhesive face (5) immediately before installation. The non-stick film (6) is polypropylene and has been treated with a silicone release agent, which has a creped texture.

The material may be provided in rolls as described in Figure 3, which is convenient for handling purposes. The rolls are presented so that the peelable film is on the outer face of the roll to facilitate the application of the material. For the embodiment 1 described above, with a roll 10 m long by 1 m wide, having a thickness of 4 mm, the weight of a roll is typically 11 kg and for embodiment 2 , the weight of a roll is reduced to 4.5 kg, unlike the precursors of sheet material whose rolls typically weigh 18 kg. For embodiment 3 described above, with a roll 10 m long by 1 m wide, having a thickness of 4 mm, the weight of a roll is typically 15 kg and for embodiment 4 , the weight of a roll is reduced to 7.5 kg, unlike the precursors of sheet material whose rolls typically weigh 18 kg.

This reduced weight is in the low risk area of a manual handling risk assessment for transport and lifting on the basis of 2 lifts per hour (as defined in the UK Government Brochure INDG383 06/14) . In addition, it is the low weight of the multilayer material that allows it to be attached using a pressure sensitive adhesive, as described in the above embodiment, which has significant advantages in terms of ease of application.

The person using the material cuts the required size of material from the roll. The nonstick paper (6) is peeled from the material at the top edge of the material to be installed and the adhesive face (5) is presented on the wall or pipe to be insulated. When the top edge is glued in place, the rest of the nonstick paper (6) is removed and the entire panel is smoothed and glued to the wall or pipe. If the quality of the application is considered insufficient, the material can be peeled off and reapplied.

Similar panels are cut and glued side by side so as to cover the entire required area and an adhesive strip is used to secure the joints. The adhesive tape having the same construction as the present invention can be used which has an advantage of maintaining thermal acoustic performance if spacings have been left during the installation phase, or for small complex areas it may be more It is convenient to use a band 5 to 10 cm wide.

The actual operating temperatures of the present embodiments are in the range of -30 ° C to + 150 ° C.

The performance characteristics of the material described in these embodiments have been evaluated and are as follows, the results of BS 476 Part 6: 1989 + A1 and BS476 Part 7: 1997 demonstrate that the evaluated product meets the requirements of Class 0 Part B (Fire Safety) of the Construction Regulations 2000.

The material is evaluated using a sample as a barrier between a sound source and an acoustic device that are placed 150 mm apart. A sound source connected to a 12V battery operating at 3000 Hz, isolated around the sides, is used to provide a directional sound source. A Precision Gold Sound Meter N05CC is used to measure the sound. The test is repeated using different samples of the multilayer sheet material and its constituent layers to quantify the acoustic performance. Test samples: Test sample 1 - Multilayer sheet material Method of completion 1

The bubble size is 0.5 to 3 mm in all samples unless otherwise indicated. All size determinations are as described above. Test Sample 2 - Butyia and Aiuminium

Trial Sample 3 - Butyia (typical)

Test Sample 4 - Solid Polyethylene Foam and Aluminum Foam

Test Sample 5 - Aluminum

Test Sample 6 - Dense Foam Multilayer Sheet Material See Embodiment 1

Bubble size between 0.01 and 1 mm Test sample 7 - Multilayer sheet material with adhesive film and butyl adhesive face layer

Embodiment 2

Bubble size range for foam from 0.25 to 1.5 mm. Test Sample 8 - Multicoated Film Material with Adhesive Film Adhesive Face Coat Processing Method 3

Bubble size range for foam from 0.25 to 1.5 mm. Test Sample 9 - Multilayer Sheet Material with Adhesive Films and Two Foam Layers and an Adhesive Film Adhesive Face Layer Embodiment 4

Bubble size range for foam from 0.25 to 1.5 mm.

In all cases, the bubble size range refers to 90% of the cells in number of the solid foam layer. Test Sample 10 - Multilayer Sheet Material with Adhesive Films and Two Thin Foam Layers and Adhesive Film Adhesive Face Layer

Bubble size range for foam from 0.25 to 1.5 mm. Test Sample 11 - Solid Foam Layer

Test Sample 12 - Aluminum Adhesive Film + Aluminum Coating

Acoustic test results

The results obtained are as follows:

The results demonstrate that the combination of multilayer sheet material produces a better sound reduction than the sum of its constituent parts. * rounded to the nearest db. For reference, it appears that 5 mm bubble size foam "Test 1" is ineffective in terms of sound reduction and can easily shrink during a fire test so as to obtain non-reproducible results. For reference, it appears that 5 mm bubble size foam "Test 1" is ineffective in terms of sound reduction and can easily shrink during a fire test so as to obtain non-reproducible results. For reference, it appears that 5 mm bubble size foam "Test 1" is ineffective in terms of sound reduction and can easily shrink during a fire test so as to obtain non-reproducible results.

The material with the best acoustic performance is that of the test sample 6, but this material has disadvantages related to its weight and fire performance. The test sample 7 has good acoustic performance, followed by the test sample 9 and finally, the test sample 8 with its simpler construction. Different applications require different combinations of acoustic, thermal, flame retardant and weight characteristics. BS 476 Fire Test Results Part 6: 1989 The results obtained are as follows:

BS 476 Part 6: 1989 requires that an average result of 12 or less be obtained from 3 out of 5 consecutive samples. Therefore, some of the 3 samples may be greater than 12. If this occurs, the variability is considered as being high. If all three samples decrease below 12, the variability is considered low.

Preferred embodiments of the present invention are as follows. 1. Multilayer sheet material for producing acoustic and thermal insulation, the material comprising the following layers; a) a coating layer bonded thereto; b) a coating bonding layer (4) comprising an adhesive film; c) one or a plurality of closed cell solid foam layers (2) comprising cells filled with deformable thermoplastic gas (3) in the form of a solid foam and said layer is bonded to; d) an adhesive face layer (5) having a self-adhesive adhesive face; which is in contact with e) a peelable protective release paper or film (6) for use, in use, to be peeled off to expose the self-adhesive adhesive side, for example for adhesion to a surface to be insulated. 2. Material of any one of the preceding embodiments wherein the adhesive film of the coating bonding layer (4) has a thickness of between 0.01 and 0.2 mm. 3. The material of Embodiment 2 wherein the adhesive film of the coating bonding layer (4) has a thickness of 0.02 to 0.06 mm. 4. The material of any one of the preceding embodiments wherein the adhesive film of the coating bonding layer (4) has a coating weight of between 10 and 200 g / m 2. 5. Material of any one of previous embodiments in which the adhesive film of the coating bonding layer (4) has a coating weight of between 20 and 50 g / m². 6. The material of any of the preceding embodiments wherein the coating adhesive face (5) is an adhesive film. The material of Embodiment 6 wherein the adhesive film of the adhesive face layer (5) has a thickness of 0.01 to 0.2 mm. 8. The material of embodiment 7 wherein the adhesive film of the adhesive face layer (5) has a thickness of between 0.02 and 0.06 mm. The material of Embodiment 6 wherein the adhesive layer of the adhesive face layer (5) has a coating weight of between 10 and 200 g / m². The material of embodiment 9 wherein the adhesive layer of the adhesive face layer (5) has a coating weight of between 20 and 50 g / m². Material of any one of embodiments 6 to 10 wherein the adhesive film of the adhesive face layer (5) is a repositionable adhesive. 12. Material of embodiments 6 to 11 wherein the adhesive face layer has the following properties when tested on No. 304 stainless steel, which has a surface finish No. 3: peel adhesion 180 ° maximum 225 g and adhesion without external pressure after 1 second of application up to 350 g. The material of Embodiment 12 wherein the adhesive face layer has the following properties when tested on No. 304 stainless steel, which has a No. 3 surface finish: 180 peel measured adhesion. ° maximum of 20 to 40 g and adhesion without external pressure after 1 second of application of 80 to 100 g. The material of any one of embodiments 1 to 5 wherein the adhesive face layer (5) is a viscoelastic layer. The material of Embodiment 14 wherein the viscoelastic adhesive face layer (5) is a butyl polymer. 16. Material of any of the previous embodiments wherein the coating layer (1) is a metal sheet. 17. Material of embodiment 16 wherein the coating layer (1) comprises an aluminum foil. 18. The material of embodiment 16 or 17 wherein the thickness of the metal sheet is between 50 and 200 μm. 16. Material of any of the preceding embodiments wherein the deformable thermoplastic forming the solid foam is polyethylene 17. The material of any one of the preceding embodiments wherein the deformable thermoplastic forming the solid foam comprises one or several flame retardant additives. 18. Material of any of the preceding embodiments wherein the gas filling the cells in the solid foam is air. 19. Material of any of the preceding embodiments wherein the gas-filled cells (3) have a polydispersed size distribution. 20. The material of embodiment 19 wherein 90% of the cells of the solid foam layer have a longer dimension of 0.01 to 5 mm. 21. Material of Embodiment 20 wherein 90% of the cells of the solid foam layer have a longest dimension of between 0.5 and 3 mm. 22. Material of any one of the preceding embodiments wherein the solid foam layer (2) has a thickness of 2 to 10 mm. 23. Material of any one of the preceding embodiments wherein the solid foam layer (2) has a thickness of 3 to 5 mm. 24. Material of any one of the preceding embodiments comprising two layers of solid foam. 25. An insulation kit comprising the material of any one of the preceding embodiments and a strip comprising the same multilayer material. 26. A method of isolating an object by applying the material of any of the preceding embodiments by removing the peelable protective release paper or film (6) and positioning the material on the object with slight pressure.

Claims (14)

claims A multilayer sheet material for producing acoustic and thermal insulation, the material comprising the following layers: a) a coating layer bonded by, b) a coating bonding layer (4), to; c) one or a plurality of closed cell solid foam layers (2) comprising cells filled with deformable thermoplastic gas (3) in the form of a solid foam and said layer is bonded to; d) an adhesive face layer (5) having a self-adhesive adhesive face; which is in contact with e) a peelable protective release paper or film (6) for, in use, to be peeled off to expose the self-adhesive adhesive side, for example for adhesion to a surface to be insulated. The material of claim 1 wherein the coating binder layer (4) is an adhesive film and has a thickness of 0.01 to 0.2 mm. The material of any one of the preceding claims wherein the coating bonding layer (4) is an adhesive film and has a coating weight of between 10 and 200 g / m². The material of any one of the preceding claims wherein the adhesive face layer (5) is an adhesive film and has a thickness of between 0.01 and 0.2 mm. The material of any one of the preceding claims wherein the adhesive face layer (5) is an adhesive film and has a coating weight of between 10 and 200 g / m². The material of any one of the preceding claims wherein the adhesive face layer (5) is a repositionable adhesive. The material of claims 1 or 6 wherein the adhesive face layer (5) is a viscoelastic layer. 8. The material of claim 7 wherein the viscoelastic adhesive face layer (5) is a butyl polymer. The material of any one of the preceding claims wherein the coating layer (1) is a metal sheet. 10. The material of any one of the preceding claims wherein the deformable thermoplastic forming the solid foam is polyethylene. The material of any one of the preceding claims wherein 90% of the cells of the solid foam layer have a longest dimension of 0.5 to 3 mm. 12. The material of any one of the preceding claims wherein the solid foam layer (2) has a thickness of 2 to 10 mm. The material of any preceding claim wherein the plurality of closed cell solid foam layers (2) are two layers of solid foam bonded together on a common face. 14. A method of isolating an object by applying the material of any one of the preceding claims by removing the peelable protective release paper or film (6) and positioning the material on the object with slight pressure.