Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
  • B60R13/08—Insulating elements, e.g. for sound insulation
  • B60R13/0892—Insulating elements, e.g. for sound insulation for humidity insulation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
  • B60R13/08—Insulating elements, e.g. for sound insulation
  • B60R13/0815—Acoustic or thermal insulation of passenger compartments

Definitions

• Sealing panel in particular for a motor vehicle door, and its manufacturing means
• the invention relates to a sealing panel, in particular for the door of a motor vehicle, as well as to its manufacturing method and device.
• Sealing panels which are intended to be placed and fixed on the sheets of motor vehicle doors, on the internal side of the vehicle, for sealing and soundproofing purposes, generally comprise at least one sheet of a material compact or cellular plastic, such as for example polyethylene or polypropylene, possibly associated with a film of a plastic material of the same type, which reinforces the sealing and the soundproofing.
• a material compact or cellular plastic such as for example polyethylene or polypropylene, possibly associated with a film of a plastic material of the same type, which reinforces the sealing and the soundproofing.
• These panels are thermoformed to be adaptable to the more or less complex shapes of the interior faces of vehicle doors and comprise on one side a bead or a film of adhesive material which makes it possible to fix them by gluing on the sheets of the doors.
• thermoformed panels are stacked on top of each other to be delivered to the manufacturers of motor vehicles.
• a separator such as a sheet of silicone paper or the like is placed either on the adhesive bead of each panel, or between two stacked panels to allow the stacking of these panels and their separation without difficulty.
• these separators To avoid the use of these separators, it has already been proposed to use adhesives of the "hot melt” type which are deposited hot on the panels and which are crosslinked to be highly cohesive and are easily detach from other panels with which they are in contact when stacking the panels. This allows the panels to be stacked directly without silicone separators.
• these beads of adhesive material which are often in the form of foam for easier crushing when they are applied to the sheets of vehicle doors, have a circular or approximately circular section and are deposited by spray gun or by means of 'A nozzle tool along the peripheral edges of the panels, the diameter of these beads is typically of the order of 5 to 6 millimeters.
• cords of foam adhesive material have a drawback, which is their ease of crushing over varying lengths during their storage, transport and handling, which can result in defects in the bonding of the panels. on vehicle doors.
• the object of the present invention is in particular to avoid this drawback.
• a sealing panel of the aforementioned type in particular for a motor vehicle door, comprising at least one sheet of compact or cellular plastic material and an adhesive material deposited on one face of the panel along a at least part of its periphery.
• the sealing panel is characterized according to the invention in that the adhesive material is deposited in the form of a tape which is of oblong cross section with a thickness less than its width and which retains a substantially constant width over its entire length.
• this strip is of substantially rectangular section, or substantially semi-elliptical with a major axis parallel to the surface of the panel and a minor axis perpendicular to the surface of the panel.
• This particular shape of the tape of adhesive material greatly reduces the risks of crushing during storage, transport or handling of the panels and correspondingly reduces the drawbacks resulting from this crushing.
• this tape is advantageously made of compact or substantially compact adhesive material, which further reduces its risk of accidental crushing before the panel is fixed to a vehicle door.
• the invention therefore also provides a method of manufacturing a panel of the type described above, characterized in that it consists in depositing a tape of adhesive material on the panel along a predetermined path, by combination of a translational movement in the plane of the panel and a rotational movement about an axis perpendicular to the plane of the panel, between this panel and means for depositing the ribbon.
• the deposition of the tape of adhesive material is preferably carried out by extrusion or by spraying.
• this method consists in moving the panel in its plane by rotation about an axis perpendicular to the panel. It is in fact easier to rotate the panel around a perpendicular axis than to rotate the tape deposition means (such as for example extrusion means) about this axis.
• this method also consists in moving the panel by translation along at least one axis parallel to its plane, and in moving the means for depositing the ribbon in translation along at least one other axis parallel to the panel.
• the invention also provides a device for manufacturing a panel of the type described above, this device comprising a panel support table and means for depositing, for example by extrusion, a tape of adhesive material on the panel , this device being characterized in that it comprises motorized means for relative displacement of said table and means for depositing in rotation about an axis perpendicular to the panel and means motorized relative movement of the table and translational depositing means along at least one axis parallel to the panel.
• this device comprises motorized means for moving the table in rotation about an axis perpendicular to the plane of the panel and in translation along at least one axis parallel to this panel, and motorized means for moving the means depositing the tape in translation along at least one other axis parallel to the panel.
• Such a device makes it possible to deposit a tape of adhesive material of any section, in particular oblong or substantially rectangular, on a panel by following any winding path, and by performing this deposition quickly and precisely.
• the motorized means for moving the table and / or the tape depositing means are controlled by information processing means, such as a PC type microcomputer for example.
• the thickness of the tape of adhesive material deposited on a panel can vary to a large extent from one type of panel to another and from application to application. 'other.
• this tape can be formed of a thin layer of adhesive, having a thickness much less than its width, and which covers a large part of the surface of the panel.
• - Figure 2 is a partial top view of this panel; - Figure 3 shows schematically a device for manufacturing a panel according to one invention.
• the panel 10 is a sealing and soundproofing panel, in particular for a door of a motor vehicle, and comprises at least one sheet of material compact or cellular plastic, generally with closed cells, for example made of polyethylene or propylene, in particular of non-crosslinked polypropylene, this sheet being able to have a thickness of between 1 and 5 or 6 mm approximately when it is made of cellular material, or a thickness between 0.15 and 1 mm approximately when made of compact material.
• this sheet 10 is associated with another sheet or with a plastic film of the same type or of a similar type, which is fixed to the sheet 10 by any suitable means known in the art.
• the panel 10 is generally thermoformed and has recessed and / or projecting parts 12, for a good adaptation to the shapes of the internal face of the door which it must cover, and for improving its soundproofing performance and possibly thermal insulation.
• the fixing of the panel 10 on the sheet of a door is ensured by means of a tape 14 of adhesive material, which is deposited on the face 16 of the panel 10 intended to be applied to the sheet of the door, the strip 14 extending continuously or discontinuously along the periphery of this panel.
• the tape 14 of adhesive material is of oblong or substantially rectangular section as shown in the figures and is advantageously made of compact or substantially compact material, that is to say very little cellularized.
• the cross-sectional area of the ribbon 14 may be substantially the same as in the prior art, where cords with a substantially circular section are generally used, with a diameter of the order of 5 to 6 mm.
• the tape 14 according to the invention can therefore have a width of 6 to 8 mm for example, and a thickness of 3 to 4 mm.
• the tape is for example based on acrylic material in aqueous solution or in an organic solvent, which can be more or less crosslinked and is preferably of the "hot melt” type, that is to say which is deposited hot on sheet 10 to adhere well thereto.
• the section of the ribbon 14 according to the invention can have any oblong shape with a width greater than its thickness, this width being for example 1.5 to 2.5 times greater than the thickness of the ribbon.
• the shape of this ribbon in section can be rectangular, oval, semi-elliptical or the like.
• the deposition of the ribbon 14 on the sheet 10 along a path such as that shown in Figure 2 requires orienting an extrusion nozzle or a deposition head by rotation about an axis perpendicular to the sheet 10, when arrives at a bend 18 in this path, so that the ribbon 14 deposited on the sheet 10 retains a width substantially constant, including constant, over its entire length.
• the panel 10 is preferably thermoformed, then placed on a table 20 which is rotatably mounted around a vertical axis 22 and which is guided in rotation about this axis for example in a frame 24 which can itself be displaced in translation in a horizontal plane on suitable guide means.
• Motorized means 26, 28 are provided to move the table 20 in rotation about the axis 22 in both directions and to move the frame 24 in translation.
• the periphery of a panel 10 placed on the table 20 is located under a nozzle 30 for exit from an extrusion die 32, designed to deposit on the upper face 16 of the panel 10 a flat tape 14 of adhesive material.
• the frame 24 carrying the table 20 is movable in translation along a horizontal axis 34 by the motorized means 28 and the extrusion means 32 are movable in translation along another horizontal axis 36 perpendicular to the aforementioned axis 34 by motorized means 38.
• the aforementioned motorized means 26, 28, 38 for moving the table 20 in rotation, and the frame 24 and the extrusion means 32 in translation, are controlled by means 40 for processing information, of the microcomputer type. for example, which have been previously programmed as a function of the path on which the ribbon 14 is deposited on the table 20.
• the rotational displacements of the table 20 around the axis 22, combined with the translational displacements of the frame 24 and the means extrusion 32, make it possible to correctly orient the extrusion nozzle 30 at all times relative to the direction in which the tape 14 of adhesive material extends, and to precisely follow the elbows 18 of the path of this tape, while maintaining a predetermined width of the ribbon 14 which is substantially constant, including constant, over its entire length.
• the tape 14 does not risk being crushed during the storage, transport and handling of the panels, so that a panel 10 comprising a tape 14 of adhesive material according to the invention can be installed without difficulty and without bonding defect on the sheet of a motor vehicle door.
• the panels 10 according to the invention can be stacked on top of each other, directly or by using silicone separators or the like if necessary, depending on the nature of the adhesive material used to form the tapes 14.
• this material is very cohesive due to its crosslinking, and when it has been hot deposited on the panel 10 and strongly adheres to it, it generally becomes possible to stack the panels on top of each other directly, without intermediate separators, and to separate them then easily from one another for their use, the adhesive tape 14 of a panel adhering only weakly to the other panel of the stack with which it is in contact and being able to be separated therefrom without degradation or deterioration.

Landscapes

• Physics & Mathematics (AREA)
• Acoustics & Sound (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Adhesives Or Adhesive Processes (AREA)
• Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=28800110

Family Applications (1)

Country Status (4)

Families Citing this family (1)

Family Cites Families (6)

• 2002
  • 2002-04-30 FR FR0205483A patent/FR2839022B1/fr not_active Expired - Lifetime
• 2003
  • 2003-04-09 AU AU2003246809A patent/AU2003246809A1/en not_active Abandoned
  • 2003-04-09 WO PCT/FR2003/001132 patent/WO2003093063A1/fr not_active Application Discontinuation
  • 2003-04-09 EP EP03747463A patent/EP1499518A1/de not_active Withdrawn

Non-Patent Citations (1)

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