Abstract: An evacuated panel is provided for thermal insulation of a body (3, 4) having non-planar surfaces, the panel having two main faces and comprising a flexible envelope (1), made of one or more barrier sheets, and a filling material formed of at least two boards (2; 2?) of an open cell polymeric foam, the boards lying one over the other, and each board having a thickness between about 2 and 8 mm.

Abstract: A process is provided for producing an insulating system, comprising at least a vacuum insulating panel (20; 30) in a matrix of homogeneous polymeric foam (602; 707), inside an interspace (101; 703) of a device which must subsequently be subjected, at least at the interspace, to a temperature higher than 100° C., without damaging this system and without causing it to lose its original insulating properties, by providing a flexible protection system of cardboard.

Abstract: A heat insulating system for tubular bodies includes at least two superimposed evacuated panels (4, 4?), at least one of the panels is formed essentially by an evacuated envelope which contains a polymeric filling material inside thereof, and at least one other panel is formed essentially by an evacuated envelope which has an inorganic filler present inside thereof, in the form of powders, fibers or their mixtures. Each of the evacuated panels (4, 4?) is rolled up around a rolling axis to such that two opposed edges thereof (5, 5?) parallel to the rolling axis are mutually set side by side. The rolled evacuated panels (4, 4?) are also arranged with the edges (5) of an evacuated panel (4) being staggered with respect to the edges (5?) of another evacuated panel (4?).

Abstract: A portable apparatus for measuring the internal pressure of a vacuum panel is described, includes a measuring head having an cavity wherein a sensor of movement is arranged; the device, supported on a portion of the envelope of the panel, detects the movement of a part of the portion of the envelope facing the cavity, following the evacuation of the space formed by said cavity and the part of envelope.

Abstract: It is disclosed a method for producing thermo-insulating cylindrical vacuum panels starting from planar panels, which comprises subjecting the planar panel (1) to a calendering operation, passing it through at least two rollers (2, 3) and a third element (4).

Abstract: A heat insulating system for tubular bodies comprises at least two superimposed evacuated panels (4, 4′), at least one of which is essentially formed by an evacuated envelope inside which a polymeric filling material is contained, and at least one other is essentially formed by an evacuated envelope inside which an inorganic filler is present, in the form of powders, fibers or their mixtures. Each of said evacuated panels (4, 4′) is rolled up on itself to the extent that two opposed edges thereof (5, 5′), that are parallel to the rolling axis, are mutually set side by side. Said rolled evacuated panels (4, 4′) are also arranged with said edges (5) of an evacuated panel (4) being staggered with respect to the edges (5′) of another evacuated panel (4′).

Abstract: The present invention teaches a process for manufacturing a flexible thermoinsulating device, which is usable to obtain the thermal insulation of a body having non-flat surfaces. The process starts with obtaining a rigid vacuum panel comprising an evacuated envelope inside which there is disposed a filling material formed of at least a board of open cell rigid polymeric foam, to an operation of localized compression along at least a linear portion of the panel. Through this compression operation at least a slot is formed on at least a face of a board of filling material adjacent to the envelope. The present invention besides relates to the flexible thermoinsulating device obtained through said process.

Abstract: An evacuated panel is provided for thermal insulation of a body (3, 4) having non-planar surfaces, the panel having two main faces and comprising a flexible envelope (1), made of one or more barrier sheets, and a filling material formed of at least two boards (2; 2′) of an open cell polymeric foam, the boards lying one over the other, and each board having a thickness between about 2 and 8 mm.

Abstract: An evacuated panel (2) is provided which enables the thermal insulation of a cylindrical body (1) having two substantially rectangular main faces, formed of a flexible envelope (4) made of one or more barrier sheets, and containing a discontinuous or porous, inorganic or polymeric filling material (3). The panel has a thickness such that the ratio between this thickness and the minimum bending radius of the lateral wall of the cylindrical body is small enough so as to enable the winding of the panel without compromising the integrity thereof, and a length such that it allows at least two windings around the body (1).

Abstract: A portable apparatus for measuring the internal pressure of a vacuum panel is described, comprising a measuring head having an cavity wherein a sensor of movement is arranged; the device, supported on a portion of the envelope of the panel, detects the movement of a part of said portion of the envelope facing the cavity, following the evacuation of the space formed by said cavity and said part of envelope.

Abstract: The present invention relates to a tubular thermoinsulating device (10; 20; 30), comprising an evacuated envelope made of barrier sheets inside which an inorganic or polymeric, discontinuous or porous filling material (13; 23) is contained. Said envelope comprises an internal tubular element (11; 21; 31) and an external tubular element (12; 22; 32) of higher diameter, which are coaxially arranged one inside the other and are reciprocally sealed at their circular edges. The circular edges of said external tubular element (12; 22; 32) are adapted to the circular edges of said internal tubular element (11; 21; 31) by means of two plies (17, 17′; 25, 25′; 35, 35′). The present invention also relates to some processes for manufacturing said thermoinsulating device.

Abstract: An evacuated jacket for thermal insulation comprises a discontinuous or porous, organic or inorganic filling material arranged inside an envelope made with at least one multi-layer barrier sheet (1) of substantially rectangular shape, which comprises at least one polymeric or inorganic central layer (2) having barrier properties towards atmospheric gases, an upper layer (4) and a lower layer (3), both of a polymeric material. The polymeric material which forms said upper layer (4) and the polymeric material which forms said lower layer (3) of the barrier sheet (1) are mutually heat-sealable and said barrier sheet (1) is folded up so as to superimpose two opposite sides (5, 6) thereof which are welded to each other by melting said upper layer (4) at one margin (6) and said lower layer (3) at the other margin (5). The present invention also relates to a process for manufacturing said evacuated jacket for thermal insulation.