EP0941172A1 - Flan non complexe thermoformable notamment destine a la realisation d'un tapis d'habitacle de vehicule automobile - Google Patents
Flan non complexe thermoformable notamment destine a la realisation d'un tapis d'habitacle de vehicule automobileInfo
- Publication number
- EP0941172A1 EP0941172A1 EP97950222A EP97950222A EP0941172A1 EP 0941172 A1 EP0941172 A1 EP 0941172A1 EP 97950222 A EP97950222 A EP 97950222A EP 97950222 A EP97950222 A EP 97950222A EP 0941172 A1 EP0941172 A1 EP 0941172A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- carpet
- mass
- blank
- doctor blade
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
- B60N3/04—Arrangements or adaptations of other passenger fittings, not otherwise provided for of floor mats or carpets
- B60N3/042—Arrangements or adaptations of other passenger fittings, not otherwise provided for of floor mats or carpets of carpets
Definitions
- the present invention relates to a non-complexed thermoformable blank, in particular intended for the production of a passenger compartment carpet for a motor vehicle and its manufacturing process.
- Cabin mats have two functions in motor vehicles.
- the first function is obviously that of giving the floor of the passenger compartment the desired appearance. But the function of acoustic insulation is just as essential.
- the vehicle floor covered with the carpet, is one of the areas generating the most noise in the passenger compartment. At the front, in its rising part, it separates the passenger compartment from the engine compartment and, in its horizontal part, it separates this passenger compartment from the road.
- the interior carpets are therefore made so as to present the desired aesthetics, but also to form an effective acoustic screen.
- they generally consist of a carpet on the back of which is applied a high density coating (said heavy mass), this composite being placed on a synthetic foam.
- the assembly behaves vis-à-vis the vibrations of the metal floor like a spring, the foam, associated with a piece of inertia, the coated carpet. This results in a damping of these vibrations and therefore a noise reduction effect.
- the difficulty lies in the fact that the carpet is in one piece and that it is surface homogeneous. It therefore has the same mass per unit area in each of its zones.
- each floor area it covers does not radiate the same acoustic energy towards the passenger compartment.
- the front area separating the passenger compartment from the engine compartment is particularly noise-generating.
- the area under the seats is already acoustically isolated by these seats themselves.
- the axially central zone is much noisier than the lateral zones.
- the floor of the passenger compartment is loaded with masses which, in some of its locations, are unnecessary.
- the reduction of masses is an imperative more and more sought in the field of automobile construction.
- the present invention aims to overcome these drawbacks, and more particularly to provide passenger compartment mats for motor vehicles which are lighter, while also being effective in terms of sound insulation.
- the invention firstly relates to a non-complexed thermoformable blank, in particular intended for the production of a carpet for the interior of a motor vehicle, comprising a carpet coated on its reverse side with a coating forming a heavy mass. , characterized in that said coating has an inhomogeneous surface mass on the back of said carpet.
- the invention makes it possible to locally adapt the mass of the passenger compartment carpet to the acoustic energy which it is intended to absorb.
- the modulation of the mass of the coating results from a variation in its thickness.
- the heavy mass is laminated. These methods have the disadvantage of being expensive.
- the heavy mass is directly applied in the pasty state on the back of the carpet, then it is polymerized to give an uncomplexed thermoformable blank.
- the present invention therefore also relates to a process of this type, for manufacturing a blank as described above, characterized in that it comprises the steps consisting in producing a carpet, and inhomogeneously coating the reverse side of this carpet with a coating forming a heavy mass.
- the coating is applied inhomogeneously in its composition, in its mass, or in its thickness.
- the coating is applied by spraying, for example from at least one nozzle, the movements of which are controlled digitally.
- the method can be implemented on a previously thermoformed carpet, for example after coating with latex.
- the coating is applied to the doctor blade on a coating table, or by extrusion.
- the doctor blade can be formed with a variable profile or be ordered in height.
- the coating table is replaced by a roller which can be formed with a variable cross section, and / or a circumference with variable radius.
- FIG. 1 is a side view illustrating a coating process as well according to the prior art as according to the invention
- - Figure 2 is a perspective view showing the coating method according to the invention
- - Figure 3 shows in perspective a thermoformable blank obtained by the method according to the invention
- FIG. 4 is a perspective view of an example of interior carpet obtained by thermoforming a blank of the type of that of Figure 3;
- FIG. 5 illustrates a variant of the method of Figure 2;
- FIG. 1 a carpet coating machine with its coating table 1 and its doctor blade 2.
- the carpet 3 scrolls on the table 1 in the direction of arrow 4, with its pile 5 below and its back 6 facing upwards.
- the coating product is supplied by a conduit 7 upstream of the doctor blade in the direction of travel, and forms, against this doctor blade, a flange 8.
- the coating product is a paste consisting of a mixture of PVC resin, a plasticizer and a filler, in particular baryte. This coating can thus reach a density of 2.4.
- Coating product is entrained by the carpet 3 under the doctor blade to form a film 9 which constitutes the heavy mass.
- the doctor blade has a profile and a flexibility adapted to the nature of the coating and to the thickness of the film which one wishes to obtain, this thickness being itself a function of the surface mass which one wishes to give to the carpet.
- the doctor blade has, according to the invention, a variable profile, here in an offset in its central part.
- the recess 10 forms an additional coating thickness in a central strip 11 of the running carpet.
- doctor blade 2 it is also possible to mount the doctor blade 2 on jacks 12 controlled in any suitable manner so as to make it movable in height. We can thus form not only strips where the coating has a variable thickness, but rectangles.
- Figure 3 shows a blank 13 obtained by this method. We see that this blank forms on the one hand bands 14, 14 ′, and on the other hand rectangles 15,
- a blank such as 13 can give a cabin carpet of the type of that of FIG. 4.
- This carpet 16 forms three longitudinal strips, two 17 and 17 'below the seats of the vehicle, of lower surface mass to that of the central strip 18 which covers the tunnel.
- the rear parts 19 and 19 ′ of the side bands have a surface mass lower than that of the front parts which separate the passenger compartment from the engine compartment.
- the coating table has been replaced by a roller 20. It is here the roller which has an annular groove, or zone of smaller diameter 21 at the bottom of which the carpet will be applied while scrolling, with the result increased coating thickness on the corresponding strip.
- roller could have axial grooves, or a circumference of variable radius, to form not bands but rectangles.
- the coating product is no longer applied to the doctor blade, but by spraying.
- the coating product is sprayed onto the carpet 22 by a nozzle 23, the opening and movements of which are controlled by a numerical control 24. It will be observed that this mode of implementation makes it possible to give the zones of different surface masses, all desired shapes, no longer just rectangles or bands.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Passenger Equipment (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9614860A FR2757116B1 (fr) | 1996-12-04 | 1996-12-04 | Flan non complexe thermoformable notamment destine a la realisation d'un tapis d'habitacle de vehicule automobile |
FR9614860 | 1996-12-04 | ||
PCT/FR1997/002203 WO1998024653A1 (fr) | 1996-12-04 | 1997-12-04 | Flan non complexe thermoformable notamment destine a la realisation d'un tapis d'habitacle de vehicule automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0941172A1 true EP0941172A1 (fr) | 1999-09-15 |
Family
ID=9498316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97950222A Withdrawn EP0941172A1 (fr) | 1996-12-04 | 1997-12-04 | Flan non complexe thermoformable notamment destine a la realisation d'un tapis d'habitacle de vehicule automobile |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0941172A1 (fr) |
AU (1) | AU5325898A (fr) |
FR (1) | FR2757116B1 (fr) |
WO (1) | WO1998024653A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2789410B1 (fr) * | 1999-02-08 | 2001-06-22 | Cera | Tapis pour vehicule automobile, et moquette aiguilletee destinee notamment a un tel tapis |
FR2831560B1 (fr) * | 2001-10-26 | 2004-02-20 | Cera | Flan thermoformable a bandes de touffes differenciees |
FR2841910B1 (fr) * | 2002-07-03 | 2005-04-15 | Cera | Flan thermoformable a tuftage carre |
FR3094261B1 (fr) * | 2019-03-27 | 2021-04-09 | Faurecia Automotive Ind | Procédé de fabrication d’un tapis chauffant pour véhicule automobile |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2115673A5 (fr) * | 1970-11-27 | 1972-07-07 | Omnium De Prospective Ind Sa | |
US4382986A (en) * | 1982-02-09 | 1983-05-10 | The Akro Corporation | Automobile floor mat with two base portions of different elastomeric materials |
US4579764A (en) * | 1984-06-27 | 1986-04-01 | Collins & Aikman Corporation | Molded carpet assembly with sound deadening foam backing |
JPH07117584A (ja) * | 1993-10-22 | 1995-05-09 | Kasai Kogyo Co Ltd | 自動車用インシュレータダッシュおよびその製造方法 |
JPH08150865A (ja) * | 1994-11-29 | 1996-06-11 | Hayashi Gijutsu Kenkyusho:Kk | 車両用フロアカーペットへの遮音シートの貼着方法 |
-
1996
- 1996-12-04 FR FR9614860A patent/FR2757116B1/fr not_active Expired - Fee Related
-
1997
- 1997-12-04 WO PCT/FR1997/002203 patent/WO1998024653A1/fr not_active Application Discontinuation
- 1997-12-04 EP EP97950222A patent/EP0941172A1/fr not_active Withdrawn
- 1997-12-04 AU AU53258/98A patent/AU5325898A/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO9824653A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2757116A1 (fr) | 1998-06-19 |
FR2757116B1 (fr) | 1999-03-05 |
WO1998024653A1 (fr) | 1998-06-11 |
AU5325898A (en) | 1998-06-29 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19990618 |
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RTI1 | Title (correction) |
Free format text: NON-LAMINATED BLANK CAPABLE OF BEING THERMOFORMED FOR PRODUCING THE FLOOR CARPET OF A MOTOR VEHICLE PASSENGER SPACE |
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GRAG | Despatch of communication of intention to grant |
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GRAG | Despatch of communication of intention to grant |
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Effective date: 20010904 |