HEATDAMMING SOFT MATERIAL WITH AT LEAST A PERFORATED MAT
(19)AUSTRALIAN PATENT OFFICE (54) Title FLEXIBLE THERMAL INSULATION MATERIAL COMPRISING AT LEAST ONE OPEN-WORKLAYER (51)6 International Patent Classification(s) E04B 001^74 F16L 059/08 F16L 059/07 F16L 059/02 (21) Application No: 2003288350 (22) Application Date: 2003.10.30 (87) WIPONo: WO04/051020 (30) Priority Data (31) Number (32) Date 02/14884 2002.11.27 (33) Country FR (43) Publication Date : 2004.06.23 (43) Publication Journal Date : 2004.07.29 (71) Applicant(s) LAURENT THIERRY S.A. (72) Inventor(s) THIERRY, Laurent (H) Application NoAU2003288350 A1(19)AUSTRALIAN PATENT OFFICE (54) Title FLEXIBLE THERMAL INSULATION MATERIAL COMPRISING AT LEAST ONE OPEN-WORKLAYER (51)6 International Patent Classification(s) E04B 001^74 F16L 059/08 F16L 059/07 F16L 059/02 (21) Application No: 2003288350 (22) Application Date: 2003.10.30 (87) WIPONo: WO04/051020 (30) Priority Data (31) Number (32) Date 02/14884 2002.11.27 (33) Country FR (43) Publication Date : 2004.06.23 (43) Publication Journal Date : 2004.07.29 (71) Applicant(s) LAURENT THIERRY S.A. (72) Inventor(s) THIERRY, Laurent The insulation material, having a total thickness of under 10 cm, consists of at least one supple layer (2, 4, 6, 8, 10) of wadding or felted natural or synthetic fibres, and layers of supple and reflective film. The fibre layers, separated by intermediate film layers (3, 5, 7, 9), have holes (17) containing gas that is normally in contact with the film layers. The holes are in zones (24) of increased thermal resistance and accounting for more than half the area of such zones. One side of the insulation material has a layer of a covering film (1) of non-woven fibres that is impermeable to water but permeable to vapour. A supple thermal-insulation material comprising at least one supple batt (10) and at least one supple film (9), which are superposed, comprising at least one supple batt (10), a so-called perforated batt, that is
• covered on one side at least by a supple film (9), a so-called reflective film, exhibiting a face that is, at the same time, reflective and hardly emissive, and/or two hardly emissive faces, and/or two reflective faces,• and provided with at least one through-hole (17), a so-called insulation hole, containing a volume of gas which normally comes into contact with each portion of film opposite the insulation hole, characterised in that each insulation hole (17) has a frontal cross-section devoid of sharp corners. Material according to Claim 1, characterised in that the perforated batt (10) comprises at least one zone (24), a so-called resistive zone, of greater thermal resistance, in which there are arranged insulation holes (17) defining a total area of opening greater than half of the area of the resistive zone, the totality of said resistive zones extending over more than half of the area of the perforated batt. Material according to one of Claims 1 or 2, characterised in that the perforated batt is made of a non-woven, thermobonded and/or needled and/or adhesion-bonded fibrous material. Material according to one of Claims 1 to 3, characterised in that the perforated batt exhibits insulation holes (17) of circular cross-section. Material according to one of Claims 1 to 4, characterised in that the perforated batt exhibits insulation holes of oval or elliptical cross-section. Material according to one of Claims 1 to 5, characterised in that the dimensions of each insulation hole (17), the thickness of the perforated batt (10) and the suppleness of each film (9, 11) that covers it are adapted so as to avoid any untimely contact, across said hole, between the reflective film (9) and a film (11) or a partition wall opposite the other side of the perforated batt. Material according to one of Claims 1 to 6, characterised in that each insulation hole (17) exhibits a maximal dimension less than ten times the thickness of the perforated batt (10). Material according to one of Claims 1 to 7, characterised in that the perforated batt (10) exhibits a thickness between 1 mm and 12 mm, and in that each insulation hole exhibits a maximal dimension between 10 mm and 30 mm. Material according to one of Claims 2 to 8, characterised in that the insulation holes of a resistive zone are aligned in a longitudinal direction and in a transverse direction of the material. Material according to one of Claims 2 to 8, characterised in that the insulation holes (17) of a resistive zone (24) are arranged in staggered manner. Material according to one of Claims 2 to 10, characterised in that the resistive zone or zones form one or more longitudinal or transverse bands in the perforated batt. Material according to one of Claims 1 to 11, characterised in that it exhibits a total thickness of less than 10 cm. Material according to one of Claims 1 to 12, characterised in that each perforated batt (2, 4, 6, 8, 10) is covered on each side by a reflective supple film (1, 3, 5, 7, 9, 11). Material according to one of Claims 1 to 13, characterised in that each perforated batt (2, 4, 6, 8, 10) is a wadding or a felt or a flannelette consisting of a non-woven fibrous material that is produced from a material chosen from among the synthetic materials made of polyester, polyamide, chlorofibres, polyolefin, the artificial materials such as viscose rayon, the natural materials of vegetable origin, such as cotton, hemp, flax, the natural materials of animal origin, such as sheep's wool, mixtures of several of the aforementioned materials. Material according to one of Claims 1 to 14, characterised in that it comprises a film (1), a so-called covering film, exhibiting an external face (12) forming a front face of the material, and in that said covering film (1) is impervious to water and permeable to water vapour, and exhibits a rupture strength greater than 150 N. Material according to Claim 15, characterised in that the covering film is a nonwoven produced from a material chosen from among the polypropylenes, the polyesters, viscose rayon, mixtures of several of the aforementioned materials, and in that its external face (12) is embossed and/or calendered and/or finished and is covered by a reflective metallic facing. Material according to one of Claims 1 to 16, characterised in that it is formed from layers (1, 3, 5, 7, 9, 11; 2, 4, 6, 8, 10) which are fixed to one another by soldering or by adhesion bonding at a restricted number of points (25, 26), so-called coupling-points, which are isolated and distributed over the area of the material. Material according to Claim 17, characterised in that the coupling-points (25, 26) are situated outside the resistive zones (24) of each perforated batt. Material according to one of Claims 1 to 18, taking the form of panels, characterised in that it is formed from layers (1, 3, 5, 7, 9, 11; 2, 4, 6, 8, 10) which, with the exception of a film (1), a so-called covering film, exhibit approximately identical dimensions in frontal planes and form a multi-component insulating thickness (35) and in that the covering film (1) projects from the insulating thickness (35) along at least one nominal portion of the peripheral contour of said insulating thickness in such a manner as to form at least one overlapping band (20) of an adjacent panel. Material in strip-form according to Claim 19, characterised in that the covering film (1) projects from the insulating thickness (35) along a longitudinal lateral straight edge (21) of said insulating thickness, a so-called overlapping edge, in such a manner as to form a longitudinal lateral straight overlapping band (20). Material in slab-form according to Claim 20, characterised in that the covering film projects from the insulating thickness along two lateral straight edges, so-called overlapping edges, which are contiguous with or opposite said insulating thickness, in such a way as to form two contiguous or opposite lateral straight overlapping bands.