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Title:
GAS-BARRIER FOR FLOOR AND OTHER SURFACES AND A PROCEEDING TO PRODUCE THE SAME
Document Type and Number:
WIPO Patent Application WO/2016/089282
Kind Code:
A1
Abstract:
The invention concerns a gas barrier (1) for floor (2) or other intended surface by means of a cloth or foil (3) that is gas-tight. According to the invention, a flowable covering (6) is arranged on the outside of said gas-tight cloth or foil (3), which is built up from a gas-tight aluminium foil having protecting layers (4, 5) of polymers or other chemical substrate on the sides (3A, 3B) thereof, e.g. polyethylene (PE), fastened by, e.g., being glued or heated in place onto the gas-tight foil (3). Said covering (6) is formed of one or more components, e.g. liquids in pairs, which are mixed and cure in the place (7) for the application thereof to said cloth or foil (3), and adheres to the same in place for the formation of a jointless, gas-tight, homogeneous barrier (8). The invention also concerns a proceeding to produce the gas barrier (1).

Inventors:
SJÖBERG ANDERS (SE)
Application Number:
PCT/SE2015/051235
Publication Date:
June 09, 2016
Filing Date:
November 17, 2015
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
STO SCANDINAVIA AB (SE)
International Classes:
E04F15/18; B32B3/30; B32B5/06; B32B15/08; E04F15/12
Domestic Patent References:
WO2003047850A12003-06-12
WO2003047850A12003-06-12
Foreign References:
DE29806041U11999-02-25
US20060260235A12006-11-23
JP2010095962A2010-04-30
US20050031832A12005-02-10
DE3113888A11982-10-14
DE9309871U11993-10-28
US5595625A1997-01-21
US20080113141A12008-05-15
US6250043B12001-06-26
US5137764A1992-08-11
US20040159073A12004-08-19
CN202299323U2012-07-04
DE29806041U11999-02-25
US20060260235A12006-11-23
JP2010095962A2010-04-30
US20050031832A12005-02-10
DE3113888A11982-10-14
DE9309871U11993-10-28
US5595625A1997-01-21
US20080113141A12008-05-15
US6250043B12001-06-26
US5137764A1992-08-11
US20040159073A12004-08-19
CN202299323U2012-07-04
Other References:
See also references of EP 3227509A4
Attorney, Agent or Firm:
CEGUMARK AB (S Göteborg, SE)
Download PDF:
Claims:
S217 P5PCT LG/KOE

C l a i m s

1. Gas barrier (1) for floor (2) or other intended surface by means of a cloth or foil (3) that is gas-tight, characterized in that, on the outside of said gas-tight cloth or foil (3) , which is built up from a gas- tight aluminium foil and having protecting layers (4, 5) of chemical substrate on the sides (3A, 3B) thereof, there is arranged a covering (6) , and that said covering (6) is formed of one or more components, which are mixed and cure in the place (7) for the application thereof to said cloth or foil (3) , and adheres to the same in place for the formation of a jointless, gas-tight, homogeneous barrier (8) .

2. Gas barrier according to claim 1,

characterized in that the main part of the surfaces of said homogeneous barrier (8) are surface -enlarged by means of polypropylene fibre (PP) (9) having the ability to improve the adhesion and which has been fasten by being glued or pressed in place at elevated temperature with said protective layers (4, 5) consisting of polyethylene (PE) .

3. Gas barrier according to any one of claims

1-2, characterized in that said cloth or foil (3) having fastened protective layers (4, 5; 9, 9) thereon, and which is manufactured in factory, is arranged to be delivered in roll form or as a cloth, for free laying out on the floor (2) , or some other intended surface, or to be glued thereon.

4. Gas barrier according to any one of the above claims 1-3, characterized in that a screed compound (11) is applied on the gas-tight cloth or foil (3) . 5. Gas barrier according to any one of the above claims 1-4, characterized in that several widths of the gas-tight cloth or foil (3) are laid together edge to edge and/or overlapping each other at mutually meeting edges (31, 32) by agglutination and/or by aluminium tape (12) along the joints (13) .

6. Gas barrier according to any one of the above claims 1-5, wherein the surface is in the form of a floor (2) characterized in that, on the floor (2) , a gas- tight aluminium foil (3) is freely laid-out or fastened, which has gas-tighting ability and which prevents release or absorption of gases and other chemical compounds from or to said floor (2), that said provided gas-tight barrier (8) is formed of a gas-tight aluminium foil (3) having a cladding of a protecting layer (4, 5) of polymers or other chemical substrate, such as polyethylene (PE) , on both sides (3A, 3B) thereof, that on said aluminium foil (3) and the protective layers (4, 5), polypropylene fibre (PP) or other protecting layer is fastened by agglutination or pressed in place, and on top of the gas-tight foil (3) and the protective layers (4, 5, 9) , a liquid curing covering (6) is applied.

7. Proceeding to produce a gas barrier for floor (2) or other intended surface by means of a cloth or foil (3) that is gas-tight according to any one of claims 1-6, characterized in that, on an intended floor (2) or other intended surface, a gas-tight cloth or foil (3) in the form of a gas-tight aluminium foil is laid out loosely or is fastened by glue (10) or other adhering adhesion agent to form a barrier (8) and thereby prevent emissions, that on said gas-tight foil (3) and protecting layers (4, 5, 9) , there is applied a material (6) in, e.g., a liquid state, which has the ability to cure and thereby, by drying, solidifying, etc., transforms into a solid state and thereby is integrated with said gas-tight aluminium foil (3) and the protective layers (4, 5, 9) for the formation of a continuous on-site made gas-tight,

jointless barrier (8) having low build height.

8. Proceeding according to claim 7,

characterized in that, on the gas-tight aluminium foil (3) and the floor covering (6) applied thereon, a screed compound (11) is laid out for the formation of a support suitable for flooring.

9. Proceeding according to any one of claims 7-8, characterized in that several widths of gas-tight aluminium foil (3) are laid out and/or fastened on

intended floor (2) , and that formed joints are joined between the widths in pairs to each other using, e.g., gas-tight aluminium tape (13) , before said curing, liquid, dryable, solidifiable , and jointless flooring (6) is applied.

10. Proceeding according to any one of the above claims 7-9, characterized in that, on the surfaces (3A, 3B) facing away from each other of said gas-tight foil (3) , a cladding (4, 5) in the form of a protecting layer of polymers is fastened before laying out the aluminium foil (3) on an intended floor (2) .

11. Proceeding according to any one of the above claims 7-9, characterized in that, on the protecting layer (4, 5) on the respective side of the aluminium foil (3) , surface-enlargement is effected by means of a PP fibre and/or using another protection material (9, 9) .

Description:
Gas -barrier for floor and other surfaces and a proceeding to produce the same .

The present invention concerns a gas barrier for floor or other intended surface by means of a cloth or foil that is gas-tight and a proceeding to produce a said gas barrier for floor or other intended surface by means of a cloth or foil that is gas-tight.

Release of chemical substances from materials is found, among other things, from floors in buildings having a so-called sick building syndrome (SBS) . The substances may have been in the floor from the

beginning, be a product of substances that have been present from the beginning, absorbed by the floor from glue damaged by damp and saponified or other material that has had contact with the floor or has been supplied to the floor in the form of wastage of liquids or in another way. Existing products having been intended to form jointless barriers for emissions, e.g. products of epoxy, have not turned out to be entirely/sufficiently tight. Their tightness only affords a slowing down effect, which often is not sufficient to remedy bad smell, the consequential problems of the emissions with SBS in buildings, or other problems.

Existing known systems to prevent

emissions from floors may be summarized according to the following.

* The technically safest method is considered to be to arrange an air gap on top of the floor, which then is ventilated by air that is sucked through the gap and is discharged outside the house. All emissions emitted from the floor are caught by the air current in the ventilation gap and is brought out of the house. Usually, floor coverings are loose- laid, alternatively a layer of screed compound is laid on the ventilated floor and the floor covering is glued onto the same. * The method that most resembles the present invention is also based on a metal foil, which has been protected by a layer of PE in a corresponding way. The product is called "DRY-TOP Metal sparrlaminat " and may be glued to the substratum as well as be covered using a screed compound.

The difference is that this foil lacks PP fibres on the surface and thereby has considerably impaired adhesion properties as well as is stiff, slippery, and fairly unpleasant to handle. Floor coverings are not applied directly to this cloth since the adhesion is too poor.

Usually, a layer of screed compound is put on the cloth and the floor covering is glued onto the same.

Alternatively, the floor coverings are loose- laid directly on the cloth, which then also often has been loose-laid.

* "Sealing coats" applicable by rolling. There are a number of different products that all have a row of common traits . All of the products come in a liquid state and are intended to be applied to concrete floors where they either are sucked in entirely or partly, or form a layer on the surface of the concrete. All products cure or dry so that they transform into a solid state, either at the surface or in the pore system. This type of sealing coat is not, as previously mentioned, sufficiently tight. In the best case, it affords a slowing down effect on the emissions, which in combination with the ventilation of the house and some other parameters may be perceived as a

considerable improvement in the indoor environment. It is usually possible to agglutinate directly on the products that are sucked into the concrete. The layer- forming products usually need to be levelled before the subsequent flooring. It is possible to loose-lay a flooring directly on top of all products.

* cTrap™ is a cloth containing an absorbent for emissions. The cloth has a membrane that lets through water steam but simultaneously stops other chemical substances . These are intercepted and encapsulated by the absorbent .

On cTrap™, only loose- laying is possible since the product is a "fluffy" cloth of a low strength.

Examples of patent documentation of technique according to the present are shown in the patent

publications mentioned below:

DE 29806041 Ul ,

US 5137764 A,

US 2006/0260235 Al ,

US 5595625 A,

US 2008/0113141 Al , and

US 6250043 Bl .

Among the above-mentioned publications, there is no gas-tight aluminium foil, which has a protecting layer of chemical substrate on both sides thereof and which cures in the place of its mixing and application to the aluminium foil so that it adheres to the aluminium foil and forms a gas-tight homogeneous barrier. Therefore, the main object of the present

invention is primarily to solve, among other things, the above-mentioned problems to reliably prevent gases and other chemical compounds from being emitted from or absorbed by floor or other construction surface.

Said object is achieved on one hand by means of a gas barrier according to the present invention, which essentially is characterized in that, on the outside of said gas-tight cloth or foil, which is built up from a gas-tight aluminium foil and having protecting layers of chemical substrate on the sides thereof, there is a covering arranged, and that said covering is formed of one or more components, which are mixed and cure in the place of the application thereof to said cloth or foil, and adheres to the same in place for the formation of a jointless gas-tight homogeneous barrier.

Said object is in addition achieved by means of a proceeding according to the present invention, which essentially is characterized in that, on an intended floor or other intended surface, a gas-tight cloth or foil in the form of a gas-tight aluminium foil is laid out loosely or is fastened by glue or other adhering adhesion agent to form a barrier and thereby prevent emissions, that on said gas-tight foil and protecting layers, there is applied a material in, e.g., a liquid state, which has the ability to cure and thereby, by drying, solidifying, etc., transforms into a solid state and thereby is integrated with said gas-tight aluminium foil and the protective layers for the formation of a continuous on- site made gas-tight, jointless barrier having low build height . The invention is in particular intended to prevent release of chemical substances from floors.

The construction system provides a

continuous and jointless barrier, which prevents release or absorption of gases and other chemical compounds, and may be integrated with the floor or other intended

surface .

The system consists of liquid materials such as glue and coating as well as cloth or foil. The construction system is applied in different layers, which bind together with each other as well as may also be bound directly to wall, floor, ceiling, or on other construction surface .

What is unique with the invention is that a, e.g., liquid flooring is applied directly to the gas- tight barrier layer (the cloth) . Thereby, there is

provided a tailor-made, continuous, and jointless barrier which is tight against gas . The materials of the barrier have good internal adhesion and are held together as a homogeneous unit and may be laid out but also be glued in place to the subfloor.

The construction system consists of a tight cloth or foil which is laid loosely on the

substratum or is fastened on the substratum using, for instance, glue or by the cloth being put in a liquid or sticky material, which fastens to the surface structure of the cloth and the substratum and then cures or solidifies, or is altered, so that the cloth is fastened to the substratum .

Normally, the foil/cloth is glued on the floor to get a solid and robust construction which is fixed and does not move. The cloth may also be laid loosely on the floor and that, on top of the cloth, the next layer is poured, which is got to engage the surface of the cloth and these layers dry or solidify together into a jointless and continuous layer which is lying loosely on the floor.

The cloth or the foil is built up from a gas-tight foil, viz. a gas-tight aluminium foil, which has been covered on both sides with a protecting layer of polymers or other chemical substrate.

The protecting layers of the cloth may, for instance, consist of the organic polymer Polyethylene (PE) , which may be glued onto the aluminium foil or be fastened without glue by, for instance, being heated in place or fastened in some other way.

The surfaces of the cloth, of the above- mentioned protecting layers, may be surface-enlarged by fibre, aggregate, granulated material, or other material that, among other things, has the purpose of improving the adhesion properties.

The current foil has a polypropylene fibre (PP) fastened on the surface. The fibre has been pressed in place at elevated temperature in the above-mentioned protective layer of PP, entirely without glue.

On the cloth, a material is applied in a liquid state, which fastens to the surface of the cloth and cures, dries, solidifies, or transforms in another way into a solid state so that said material forms a jointless and continuous layer together with the cloth.

A unique design may involve that, on top of the cloth, a liquid flooring is "spread out", which cures in place onto the substratum. Examples of a suitable flooring is the product StoCrete BB 100™, which gives a 2-3 mm thick covering having the corresponding properties as a PVC carpet. The floor covering StoCrete BB 100™ is delivered to the working site as one, two, or more viscous liquids. Said components, which where appropriate are mixed together, are then spread out in an approx. 2-3 mm thick layer, which engages the fibres of the cloth and cure together with the same. StoCrete BB 100™ is no unique product in itself .

What is unique with the method is, as previously mentioned, that a liquid flooring is now applied directly to the tight barrier layer (the cloth) and on-site provides a tailor-made, continuous, and jointless barrier that is tight against gas and which is held together as a homogeneous unit.

If in addition the cloth is glued to the floor before the covering is spread out, a robust and entirely gas-tight floor system is obtained having a low build height (approx. 3 mm) and good hygienic properties such as sound reduction, resilience/softness,

cleanability , and colour stability, etc.

Several widths of the cloth may, if larger surfaces are required, be joined by being laid with an overlap, which is carried out with or without

agglutination, by laying the widths edge to edge carried out with or without agglutination, or patching up the joint with tape, or using another method.

The tightness of the joint, when the widths of the cloth are laid edge to edge and the joint is patched up with tape using an entirely gas-tight aluminium tape, which is a commodity from 3M™, will be

satisfactory. Said surface-enlarging material may, in addition to being arranged continuously on said gas-tight foil, terminate a bit from the edge so that said joining only occurs with portions of non- surface-enlarged foil. The method may also be executed by laying a screed compound on the cloth instead of spreading the floor covering. Then a support is obtained that is

suitable to many different types of floor coverings. The method gains on this by increased options of floor

coverings but loses by greater build height, increased complexity, and smaller development height in relation to the method below.

The invention is described in the

following as a number of preferred embodiment examples, reference being made to the accompanying drawings, in which

Fig. 1 shows a first embodiment example of the invention illustrated in the form of a section view of a floor and provided gas barrier,

Fig. 2 shows a second embodiment example of the invention, likewise shown in the form of a section view, and

Fig. 3 shows a schematic planar view of a floor having several laid out widths of foil.

According to specified embodiment examples of the invention, an intended gas barrier 1 for floor 2 or other intended surface by means of a cloth or foil 3 that is gas-tight is characterized in that, on the outside of said gas-tight cloth or foil 3, which is built up from aluminium foil having protecting layers 4, 5 of polymers or other chemical substrate on the sides 3A, 3B thereof, e.g., polyethylene (PE) , which has been heated in place onto the aluminium foil, there is arranged a flowable covering 6. Said covering 6 is formed of one, pair-wise or more liquids, which cure in the place 7 for the

application thereof to said cloth or foil 3, and adheres to the same in place for the formation of a jointless, gas-tight, homogeneous barrier 8. The covering may consist of;

* A single component just like a thick paint that dries and becomes hard.

* Two components where one of them is a powder and the other a liquid.

* Two liquids.

* More than two components, which may be both liquids and powders or other form (gas-ice- granulate, etc.) .

Furthermore, the surfaces 4A, 5A of said protecting layers 4, 5 may in their entirety or partly be arranged surface-enlarged by means of fibre, aggregate, granulated material, or other material 9 having the ability to, among other things, improve the adhesion, e.g. polypropylene fibre (PP) which has been fastened by, e.g., being glued or pressed in place at elevated temperature with said protective layers 4, 5, consisting of, e.g., polyethylene (PE) . Said surface-enlarging material 9 also makes the cloth or the foil 3 more handleable, which is a major advantage upon the laying out. The edges of the cloth where the tape should be fastened tightly do not need to be covered with surface-enlarging material 9. The gas-tight cloth or foil 3 is freely laid-out on the floor, or some other intended surface, or is glued thereon by means of a suitable glue 10 or other sticky substance, and a screed compound 11 may be applied on the gas-tight cloth or foil 3. Several widths of gas-tight cloths or foils 3 are laid together edge to edge and/or overlapping each other at mutually meeting edges 3 1 , 3 2 by agglutination and/or by aluminium tape, or other preferably gas-tight tape 12 along the joints 13.

When the surface is in the form of a floor

2, a barrier 8 is freely laid-out or fastened on the floor 2 and which has gas-tighting ability and which prevents release or absorption of gases and other chemical

compounds from or to said floor 2. Said barrier 8 is formed of a gas-tight aluminium foil 3 having a cladding of a protecting layer 3A, 3B of polymers or other chemical substrate, e.g. polyethylene (PE) . On said aluminium foil

3, polypropylene fibre (PP) or other protecting layer is fastened, e.g. pressed in place, and on top of the

aluminium foil 3, a liquid curing covering, e.g.

correspondingly similar to a PVC carpet, is applied.

A proceeding to produce a gas barrier for floor 2 or other intended surface by means of a cloth or foil 3 that is gas-tight comprises that, on an intended floor 2 or other intended surface, a gas-tight cloth or foil in the form of a gas-tight aluminium foil 3 is laid out or fastened by glue 10 or other adhering adhesion agent to form a barrier 8 and thereby prevent emissions. On said gas-tight aluminium foil 3, a material 6 is applied in a liquid state, which has the ability to cure and thereby dry, solidify, etc., and transform into a solid state and thereby be integrated with said gas-tight aluminium foil 3 for the formation of a continuous on-site made gas-tight, jointless barrier 8 having low build height .

On the gas-tight aluminium foil 3 and the floor covering 6 applied thereon, a screed compound 11 may be laid out for the formation of a support suitable for flooring . It is possible to lay out and/or fasten several widths of gas-tight aluminium foil 3 on intended floor 2 and formed joints are joined between the widths in pairs to each other by preferably gas-tight, e.g.

aluminium, tape 13, before said curing, liquid, dryable, solidifiable, and jointless flooring 6 is applied. On the surfaces 3A, 3B facing away from each other of said aluminium foil 3, a cladding 4, 5 in the form of a

protecting layer of polymers or other chemical substrate is applied on the aluminium foil 3 before laying out on an intended floor 2.

Function and nature of the invention should have been clearly understood from the above- mentioned and also with knowledge of what is shown in the drawings but the invention is naturally not limited to the embodiments described above and shown in the accompanying drawings. Modifications are feasible, particularly as for the nature of the different parts, or by using an

equivalent technique, without departing from the

protection area of the invention, such as it is defined in the claims .

The cloth today consists of five different layers. In the middle, there is a gas-tight foil of aluminium, on each side of the foil there is a protecting layer (PE layer) , and on each side of said protecting layer, there is a surface-enlarging material (PP fibre)

The foil consists of aluminium, and it should be entirely tight, other metal, or other material that is gas-tight.

The tape does not have to be of aluminium.

It is possible to arrange the function of the joint also by means of a non-gas-tight tape. In the text, aluminium foil is given as example and preferred embodiment example, respectively, but other metal material having the similar properties is accordingly equally feasible.