WO2021123679A1 - Dispositif de preparation d'un produit d'isolation a base de laine, notamment minerale - Google Patents
Dispositif de preparation d'un produit d'isolation a base de laine, notamment minerale Download PDFInfo
- Publication number
- WO2021123679A1 WO2021123679A1 PCT/FR2020/052551 FR2020052551W WO2021123679A1 WO 2021123679 A1 WO2021123679 A1 WO 2021123679A1 FR 2020052551 W FR2020052551 W FR 2020052551W WO 2021123679 A1 WO2021123679 A1 WO 2021123679A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- enclosure
- wool
- face
- inlet opening
- flakes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G9/00—Opening or cleaning fibres, e.g. scutching cotton
- D01G9/08—Opening or cleaning fibres, e.g. scutching cotton by means of air draught arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1404—Arrangements for supplying particulate material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1404—Arrangements for supplying particulate material
- B05B7/144—Arrangements for supplying particulate material the means for supplying particulate material comprising moving mechanical means
- B05B7/145—Arrangements for supplying particulate material the means for supplying particulate material comprising moving mechanical means specially adapted for short fibres or chips
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
- E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
- E04F21/06—Implements for applying plaster, insulating material, or the like
- E04F21/08—Mechanical implements
- E04F21/085—Mechanical implements for filling building cavity walls with insulating materials
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
- E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
- E04F21/06—Implements for applying plaster, insulating material, or the like
- E04F21/08—Mechanical implements
- E04F21/12—Mechanical implements acting by gas pressure, e.g. steam pressure
Definitions
- TITLE DEVICE FOR THE PREPARATION OF AN INSULATION PRODUCT BASED ON
- An insulation product venting device is disclosed.
- Mineral wool is a very good thermal and acoustic insulator because it includes entangled mineral fibers which gives it a porous and elastic structure. Such a structure allows air to be trapped and noise to be absorbed or attenuated.
- mineral wool is produced essentially from mineral materials, in particular natural or recycled products (recycled glass), and thus presents an interesting environmental balance.
- mineral wool is made from a material that is inherently incombustible, it does not fuel fires and does not spread flames.
- the mineral wool is chosen from glass wool or rock wool.
- the manufacture of bulk mineral wool can further include the following steps:
- agents such as anti-static agents and / or a cohesion adjuvant, previously concomitantly or following the nodulation, and / or
- the mineral wool is in the form of nodules or flakes.
- the mineral wool can then be used as it is as a product of bulk insulation or insulation in bulk ("loose fil! Insulation" in English) by spreading, blowing or filling of cavities.
- Bulk insulation corresponds, in the building industry, to a variety of materials presented in the form of small particles, the texture of which varies from grainy to flaky.
- Mineral wool is advantageously used in the form of nodules or flakes as the main constituent in bulk insulation products for hard-to-access spaces such as unfinished or difficult-to-access floors in lost attic.
- Bulk insulation products are therefore mainly installed by spraying directly into the space to be insulated such as attics or by injection into a wall cavity.
- the insulation product once blown, must be as homogeneous as possible to avoid thermal bridges and thus improve thermal performance.
- the insulation product when the insulation product is blown, no matter the diameter of the outlet pipe, the mineral wool in the form of nodules or flakes is not completely homogeneous.
- the thermal conductivity of the resulting insulation product is not optimized.
- enclosures 1 provided with an inlet opening 2 and an outlet opening 3 in which the flakes 4 aerate for a predefined time before leaving. .
- these wool ventilation enclosures have the disadvantage of being bulky to allow good ventilation of the wool flakes.
- a bulky enclosure becomes bulky and heavy, which makes it difficult to use.
- the present invention seeks to solve the problems of the aeration enclosures known from the prior art by providing an enclosure in which a turbulent current is created for better aeration of the flakes.
- the present invention relates to a device for preparing a wool-based insulation product comprising an enclosure comprising an inlet opening through which a flow of carrier gas and a wool in the form of nodules or flakes are formed. introduced, the gas flow being subjected to a turbulent flow in said enclosure, and an outlet opening through which flakes mixed with an outlet gas flow are expelled, characterized in that said device further comprises flow deflection means gas making it possible to increase the residence time of the wool in the enclosure creating a disturbance which aerates the wool in the form of nodules or flakes.
- the present invention advantageously makes it possible to increase, via the deflector element, the disturbances created in said enclosure.
- This increase in disturbances makes it possible to better aerate the insulating wool flakes so as to have better performance. But this also makes it possible to reduce the size of the enclosure while maintaining identical performance. A more compact enclosure then becomes easier to handle.
- the deflection means comprise at least one deflector element.
- said deflector element comprises a deflection surface extending from an interior wall of the enclosure.
- said deflector element comprises a deflection surface and at least one arm connecting said deflection surface to an interior wall of the enclosure.
- said deflection surface is a two-dimensional plate.
- said deflection surface is a three-dimensional part.
- said deflector element comprises a crosspiece arranged between two internal walls of said enclosure.
- said cross member comprises asperities and / or openings.
- said enclosure comprises at least two deflector elements chosen randomly.
- said deflection means comprise at least a partial misalignment of the main direction of the gas flow entering the enclosure through the inlet opening and the outlet opening.
- the misalignment between the main direction of the gas flow entering the enclosure through the inlet opening and the outlet opening is total.
- said deflection means comprise at least one obstacle created by the internal wall of said enclosure.
- said enclosure has a volume of between 5 and 90 dm3.
- the enclosure is such that at least the area of the entrance opening differs from the area of the entrance face.
- the invention further relates to an insulation system to be sprayed comprising a means for generating a gas stream P connected to the device for preparing a wool-based insulation product according to the invention, said means for generating d. 'a gas stream P being able to provide a gas stream in which flakes of wool are mixed.
- said enclosure is arranged so that a second pipe can be connected to the outlet opening.
- the insulation product has a density of about 5 to 15 kg / m3 for glass wool products and about 15 to 50 kg / m3 for rock wool products.
- FIG. 1 is a schematic representation of a device for preparing a wool-based insulation product according to the prior art
- FIGS. 2, 3 and 5 are schematic representations of a device for preparing a wool-based insulation product according to the invention.
- FIGS. 4a, 4b and 4c are schematic representations of the different forms of enclosure of a device for preparing a wool-based insulation product according to the invention
- FIGS. 6a, 6b, 7, 8a to 8d are schematic representations of a first embodiment of the device for preparing a wool-based insulation product according to the invention.
- FIGS. 9a, 9b, 10 are schematic representations of a second embodiment of the device for preparing a wool-based insulation product according to the invention.
- FIGS. 11 a, 11 b are schematic representations of a variant of the embodiments of the device for preparing a wool-based insulation product according to the invention.
- FIGS. 12a, 12b and 13 are schematic representations of embodiments of the device for preparing a wool-based insulation product according to the invention.
- FIGS. 3 and 14 are schematic representations of an insulation system to be designed according to the invention.
- FIGS. 15a, 15b, 15c and 15d are schematic representations of other means for increasing the residence time of the wool-type material according to the invention.
- FIGs 2 and 3 a device for preparing a wool-based insulation product 10 according to the invention is shown.
- This device 10 comprises an enclosure 100 comprising an inlet opening 101 and an outlet opening 103.
- a gas stream f is introduced into the enclosure 100 via the inlet opening, this gas stream f being produced by means of generation of a gas stream P.
- the inlet opening 101 also allows insertion of a wool L in the form of flakes or nodules in the chamber via means for introducing a wool in the form of flakes or nodules in the enclosure.
- Wool in the form of flakes or nodules is rock wool or glass wool or cellulose wool. These nodules or flakes of mineral wool have a length of between 0.05 and 5 cm, in particular between 0.1 and 1 cm.
- the wool and the gas stream are thus introduced into the enclosure 100 via a pipe t, itself connected by means of generating a gas stream P (compressor of the blowing machine) thus forming a system insulation to project.
- the wool can be introduced into the gas stream beforehand.
- the enclosure 100 optionally comprises means for creating within the enclosure a driving of the wool in one direction in a direction A and in the reverse direction in a direction B opposite to the direction A so that there is in the enclosure at least one plane perpendicular to direction A, where the wool entrained in direction A and wool entrained in the opposite direction in direction B intersect.
- the means for creating training within the enclosure wool in one direction in a direction A and in the opposite direction in a direction B opposite to direction A depend, for example, on the shape and size of the enclosure.
- the gas flow is anyway, subjected to a turbulent flow in said enclosure 100.
- the enclosure 100 is arranged so that the inlet opening 101 and the outlet opening 103 are arranged on opposite sides of the enclosure.
- the inlet opening is arranged on an inlet face 100a while the outlet opening is arranged at an outlet face 100b.
- the inlet opening 101 and the outlet opening 103 are facing each other.
- the enclosure is such that at least the area of the inlet opening differs from the area of the inlet face i.e. the area of the inlet opening is smaller than the area of the inlet opening. input face surface.
- the area of the inlet opening is equal to half the area of the inlet face, preferably one third, one quarter or one fifth.
- the area of the outlet opening also differs from the area of the outlet face.
- This enclosure configuration allows the gas flow circulating therein to be disturbed.
- the incoming gas flow is not subjected to a turbulent flow making it possible to aerate the wool flakes, the flow enters and then leaves without residence time in said enclosure.
- the enclosure 100 further comprises at least two side faces 100c, an upper face 100d and a lower face 100e.
- the enclosure can thus have, seen from a side face, a square or rectangular or trapezoidal profile.
- the enclosure 100 comprises at least two side faces 100c and an upper face 100d and a lower face 100e.
- the exit face is removed in favor of the upper face and the lower face.
- the upper face 100d and the lower face 100e are arranged so as to make the exit face unnecessary.
- the upper face and the lower face are arranged to that the enclosure has, seen from a side face, a triangular profile.
- the upper face and the lower face converge towards each other.
- Such a triangular profile makes it possible to arrange the outlet opening at the level of the junction between the upper face and the lower face.
- the enclosure 100 includes at least two side faces 100c, an upper face 100d and a lower face 100e.
- the exit face 100b is split into two converging parts 100b ′ so as to locally / partially create a triangular profile.
- Such a triangular profile makes it possible to arrange the outlet opening 103 at the junction between the two parts forming the outlet face.
- the enclosure has dimensions allowing it to have a volume of preferably between 5 and 90 dm3.
- the outlet opening 103 can have any shape such as a circular shape 103a.
- the outlet opening is in the form of a slot 103b.
- This slot extends horizontally with respect to the plane of the ground.
- This slot extends partly or over the entire width of the enclosure.
- This slit has a height of between 0.1 and 1 cm, preferably between 0.2 and 0.5 cm.
- the advantage of a slot 103b is to allow the expulsion of the flakes over a greater width and therefore to allow a larger covered surface.
- the output flow of the flakes is such that the blast speed is at least 15 m / s, for example, about 20 m / s.
- the enclosure 100 includes means for deflecting the flow entering said enclosure. These deflection means are thus able to deflect the incoming gas flow. These deflection means are therefore means making it possible to lengthen the residence time of the wool, in the form of flakes or nodules, in said enclosure.
- these deflection means make it possible to lengthen the residence time of the wool in the enclosure, comprise at least one deflector element 200 acting as a means for generating a turbulent gas current.
- This deflector element 200 extends into said enclosure 100. By this it is understood that said deflector element 200 extends from any interior wall of said enclosure 100.
- This deflector element 200 advantageously makes it possible to deflect the incoming gas flow and to create a disturbance of the gas current circulating in the enclosure 100. These disturbances cause the appearance of recirculation points creating an instability which increases the level of turbulence and creates the disturbances. recirculation movements. These recirculation points are then the place in which shear forces are present. The insulating material such as wool flakes undergoes, with these shear forces, significant mechanical stresses which help to "aerate” the fibers. The passage in the recirculation zone allows to considerably increase the time when the mineral wool is subjected to strong constraints.
- This aeration of the insulating material flakes makes it possible to significantly reduce the density of the wool or cellulose in the form of nodules or flakes, but above all to homogenize its structure.
- the expansion and / or the homogenization of the wool subjected to the aeration step of the invention is much better than that which can be obtained by the known homogenization processes.
- the improvement in thermal performance is reflected in particular, compared with unventilated mineral wools, in a decrease in thermal conductivity at equal density or by a decrease in density at equal thermal conductivity.
- the resulting insulation products also have much higher air resistance at equal density and thickness.
- the insulation products obtained after the aeration step have low densities, in particular around 5 to 15 kg / m3 for products based on glass wool and around 15 to 50 kg / m3 for products with rock wool base.
- a second advantage of the enclosure according to the invention is that it allows the size of the enclosure to be optimized. Indeed, a disturbance of the gas flow causing the aeration of the wool flakes of insulating material is likely to be obtained by the enclosure itself. By this is meant that the shape and dimensions of the enclosure are such that recirculation points appear. However, the dimensions of the enclosure determine its size and even its mass. Thus, the fact of being able to create a disturbance in an enclosure with a deflector element makes it possible to design an enclosure with smaller dimensions and therefore less bulk while having the same aeration performance of wool.
- the deflector element 200 comprises a deflection surface 210 extending from an interior wall of the enclosure 100. This deflection surface 210 is used to oppose the gas flow. entering the enclosure 100 and thus create turbulence. This deflection surface can take different forms.
- the deflection surface 210 is a two-dimensional plate 211, planar as visible in FIGS. 6a and 6b, or said plate extends from a wall.
- This plate can take various forms: circular, ovoid, square, rectangular, parallelepiped, etc. ...
- the deflection surface 210 is a three-dimensional part 212.
- This three-dimensional part 212 is a conical, pyramidal, parallelepipedal part, truncated or not, full or partially recessed, that is to say. ie having any shape allow to deflect / disturb the gas stream.
- the deflection surface can extend directly from the interior wall of the enclosure 100.
- said deflector element 200 further comprises at least one arm 213 arranged to see one of its ends fixed to the inner wall of the enclosure 100.
- This fixing can be effected by gluing or welding. or screwing or the arm is made of material with said enclosure.
- the second end of the arm is used to support said deflection surface 210.
- the arm 213 supporting said deflection surface 211 is preferably fixed to said deflection surface 211 via the edge thereof.
- the arm 213 supporting said three-dimensional piece 212 extends from one side of this three-dimensional piece 212.
- Having an arm 213 offers more possibility for the placement of said deflection surface 210 relative to the gas stream. Thus, it is possible to place said deflection surface 210 more centrally in the enclosure 100.
- the deflector element 200 comprises a second arm 213.
- the arrangement of this second arm can be varied. It is thus understood that the second arm 213 can extend from the deflection surface 210 parallel to the first arm or from an opposite side. Having the arms 213 extending in an opposite direction has the advantage of reducing their risk of deformation under the effect of the gas flow causing a modification of the disturbance.
- the deflector element 210 comprises a cross member 220 arranged between two walls of the enclosure.
- Figure 9a shows the crosshead 220 from the entry face or the exit face.
- This crosspiece 220 can be in the form of a cylinder, solid or hollow, of a half-cylinder partially hollowed out or not, of an L-shaped or V-shaped profile.
- the crosspiece 220 can thus take any shape allowing it to disturb the gas flow as shown in the figure
- asperities 222 such as through cavities or not or protuberances are arranged at the level of the deflector element 210. These asperities advantageously make it possible to disturb the gas flow.
- the enclosure comprises a deflector element 200.
- Figure 12a shows a view from the top wall. This deflector element as described in the two embodiments is arranged facing the inlet opening of the enclosure.
- the type of deflector element 210 used depends on the inlet opening 101. Indeed, if the inlet opening 101 has a circular or similar shape, a deflector element as described in the first embodiment of the invention. achievement is used. In the case of an opening 101 in the form of a slot, a deflector element 210 according to the second embodiment is used.
- deflector element in the form of a cross member for an inlet opening in the form of a slot.
- deflector element in the form of a cross member for an inlet opening in the form of a slot.
- the deflector element is arranged to face the inlet opening in order to maximize its performance.
- the deflector element does not have a homothetic shape with the inlet opening, positioning opposite the inlet opening is advantageous.
- the enclosure 100 is provided with at least two deflector elements 210. This multiplication of the deflector elements makes it possible to ensure turbulence of the gas stream in said enclosure.
- the deflection means making it possible to increase the residence time of the wool in the enclosure, are a particular arrangement of the enclosure.
- the increase in the residence time of the wool is operated by the chamber itself. Indeed, it is possible to increase the residence time of the flakes by disrupting the inflow. This flow disturbance is the result of the presence of obstacle (s) in the path of the gas flow entering said enclosure. This or these obstacles have various origins.
- the obstacles to the incoming gas flow are due to the shape of the enclosure visible in Figures 15a and 15d.
- the enclosure has a shape such that at least one wall of said enclosure partially facing the incoming gas flow. This wall partially facing the incoming gas flow makes it possible to disturb the flow by at least partially deflecting it in another direction.
- the obstacles making it possible to increase the residence time of the flakes in the enclosure are the consequence of a misalignment between the inlet opening and the outlet opening in Figures 15b and 15d.
- a misalignment makes it possible to create a natural obstacle to the incoming gas flow carrying the flakes, the incoming gas flow impacting the interior wall of the enclosure. This generates a dispersion of the gas flow and therefore a disturbance.
- the misalignment necessary to allow the creation of a disturbance making it possible to increase the residence time of the flakes in the enclosure is such that, at a minimum, the outlet opening must not be completely opposite the incoming gas flow. through the entrance opening. It is therefore understood that the incoming gas flow is propelled in a main direction in which it is intense and in secondary directions in which the intensity is less.
- the outlet opening is placed so as not to be completely opposite the main direction of the incoming gas flow, a partial overlap is possible.
- the outlet opening is placed so that no overlap between the inlet opening and the outlet opening is present.
- the enclosure according to the invention is not used as an end cap, that is to say as the element through which the insulating product is projected towards the area to be isolated.
- the enclosure can be used as an intermediate element in the insulation system to be projected.
- the outlet opening 103 is arranged, equipped to connect a second pipe t ’.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Physics & Mathematics (AREA)
- Duct Arrangements (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Nozzles (AREA)
- Coating Apparatus (AREA)
- Nonwoven Fabrics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20851209.5A EP4077778A1 (fr) | 2019-12-20 | 2020-12-18 | Dispositif de preparation d'un produit d'isolation a base de laine, notamment minerale |
| US17/787,167 US12442201B2 (en) | 2019-12-20 | 2020-12-18 | Device for preparing an insulation product made from wool, in particular mineral wool |
| CA3161388A CA3161388A1 (fr) | 2019-12-20 | 2020-12-18 | Dispositif de preparation d'un produit d'isolation a base de laine, notamment minerale |
| KR1020227023532A KR20220112825A (ko) | 2019-12-20 | 2020-12-18 | 울, 특히 미네랄 울로 제조된 단열 제품을 준비하기 위한 디바이스 |
| JP2022535755A JP7821728B2 (ja) | 2019-12-20 | 2020-12-18 | ウール、特にミネラルウールから製造された遮断製品を調製するための装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1915097A FR3105268B1 (fr) | 2019-12-20 | 2019-12-20 | Dispositif de preparation d’un produit d’isolation a base de laine, notamment minerale |
| FRFR1915097 | 2019-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021123679A1 true WO2021123679A1 (fr) | 2021-06-24 |
Family
ID=71661903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2020/052551 Ceased WO2021123679A1 (fr) | 2019-12-20 | 2020-12-18 | Dispositif de preparation d'un produit d'isolation a base de laine, notamment minerale |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US12442201B2 (fr) |
| EP (1) | EP4077778A1 (fr) |
| JP (1) | JP7821728B2 (fr) |
| KR (1) | KR20220112825A (fr) |
| CA (1) | CA3161388A1 (fr) |
| FR (1) | FR3105268B1 (fr) |
| WO (1) | WO2021123679A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6503026B1 (en) * | 1997-09-12 | 2003-01-07 | Redi-Therm Insulation, Inc. | Static free method for blowing loose fill insulation |
| WO2003027554A2 (fr) * | 2001-09-21 | 2003-04-03 | Certainteed Corporation | Distributeur d'isolant en vrac dans lequel un conduit comporte un revetement interne a pointes |
| WO2006081137A2 (fr) * | 2005-01-26 | 2006-08-03 | Johns Manville | Procede d'isolation utilisant un isolant fibreux sec applique au pistolet |
| WO2017115045A1 (fr) * | 2015-12-29 | 2017-07-06 | Saint-Gobain Isover | Procede de preparation d'un produit d'isolation a base de laine, notamment minerale |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1885645A (en) * | 1930-01-04 | 1932-11-01 | John T Vawter | Cement gun nozzle |
| US2668330A (en) * | 1952-02-25 | 1954-02-09 | Hugh L Gieszl | Cleaner for mechanical cotton pickers |
| US3551178A (en) * | 1967-04-14 | 1970-12-29 | Velvetex Ind Corp | Method and apparatus for electrostatic flocking |
| DE1760261C3 (de) * | 1968-04-25 | 1974-07-18 | Compagnie De Saint-Gobain, Neuillysur-Seine (Frankreich) | Schachtartige Formkammer für die Herstellung von Mineralfaservliesen oder -matten, insbesondere aus geschnittenen Glasfadensträngen |
| JPS5024661Y1 (fr) * | 1968-11-28 | 1975-07-24 | ||
| BE792300A (fr) * | 1971-12-06 | 1973-03-30 | Safety Vehicles Dev A B | Appareil d'attenuation du bruit d'echappement des |
| FR2247346B1 (fr) * | 1973-10-10 | 1978-02-17 | Saint Gobain | |
| US4027740A (en) * | 1975-02-10 | 1977-06-07 | Martin James F | Multi-chamber muffler |
-
2019
- 2019-12-20 FR FR1915097A patent/FR3105268B1/fr active Active
-
2020
- 2020-12-18 WO PCT/FR2020/052551 patent/WO2021123679A1/fr not_active Ceased
- 2020-12-18 EP EP20851209.5A patent/EP4077778A1/fr active Pending
- 2020-12-18 CA CA3161388A patent/CA3161388A1/fr active Pending
- 2020-12-18 KR KR1020227023532A patent/KR20220112825A/ko active Pending
- 2020-12-18 US US17/787,167 patent/US12442201B2/en active Active
- 2020-12-18 JP JP2022535755A patent/JP7821728B2/ja active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6503026B1 (en) * | 1997-09-12 | 2003-01-07 | Redi-Therm Insulation, Inc. | Static free method for blowing loose fill insulation |
| WO2003027554A2 (fr) * | 2001-09-21 | 2003-04-03 | Certainteed Corporation | Distributeur d'isolant en vrac dans lequel un conduit comporte un revetement interne a pointes |
| WO2006081137A2 (fr) * | 2005-01-26 | 2006-08-03 | Johns Manville | Procede d'isolation utilisant un isolant fibreux sec applique au pistolet |
| WO2017115045A1 (fr) * | 2015-12-29 | 2017-07-06 | Saint-Gobain Isover | Procede de preparation d'un produit d'isolation a base de laine, notamment minerale |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4077778A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3105268B1 (fr) | 2022-08-12 |
| US20230020345A1 (en) | 2023-01-19 |
| FR3105268A1 (fr) | 2021-06-25 |
| EP4077778A1 (fr) | 2022-10-26 |
| US12442201B2 (en) | 2025-10-14 |
| JP7821728B2 (ja) | 2026-02-27 |
| JP2023509348A (ja) | 2023-03-08 |
| KR20220112825A (ko) | 2022-08-11 |
| CA3161388A1 (fr) | 2021-06-24 |
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