EP3684644A1 - Matelassure de siège de véhicule automobile - Google Patents
Matelassure de siège de véhicule automobileInfo
- Publication number
- EP3684644A1 EP3684644A1 EP18800694.4A EP18800694A EP3684644A1 EP 3684644 A1 EP3684644 A1 EP 3684644A1 EP 18800694 A EP18800694 A EP 18800694A EP 3684644 A1 EP3684644 A1 EP 3684644A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cap
- marking
- padding
- comfort layer
- foam
- 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- Withdrawn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
- 239000006260 foam Substances 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 7
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002243 precursor Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
- B60N2/7017—Upholstery springs ; Upholstery characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/56—Heating or ventilating devices
- B60N2/5678—Heating or ventilating devices characterised by electrical systems
- B60N2/5685—Resistance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/58—Seat coverings
Definitions
- the invention relates to a seat cushion for a motor vehicle, a seat comprising such a padding and a method of manufacturing such padding.
- a cap comprising a coating format intended to be heated, said cap being provided with a decorative concave marking
- An elastically compressible polyurethane foam padding block said block overmolding at least said format via said sheet and said comfort layer.
- the main function of the comfort layer is to make the sheet for the occupant of the seat imperceptible to the touch, especially when said sheet has a high rigidity.
- One of the advantages of making a padding of which at least a portion of the cap is overmolded by the padding block is to be able to confer on said cap one or more decorative markings of concave shape, for example in the form of decorative trenches, said marking being maintained in its shape because of its cohesion with said block.
- the implementation of such a method is satisfactory in the case where the marking is not pronounced, involving large radii of curvature.
- the marking is very pronounced, as may be the case when it is in the form of a narrow trench, the presence of the comfort layer, which may have a significant thickness, especially of the order several millimeters makes it difficult to obtain a well-defined marking, the presence of said comfort layer making it difficult to obtain small radii of curvature in the cap.
- the invention aims to overcome these disadvantages.
- the invention proposes a seat pad of a motor vehicle, said padding comprising, successively associated with each other:
- a cap comprising a coating format intended to be heated, said cap being provided with a decorative concave marking
- An elastically compressible polyurethane foam padding block said block overmolding at least said format via said sheet and said comfort layer,
- Said comfort layer is provided with at least one cutout forming a lumen arranged to receive said marking, so that, opposite said marking, said ply is not deformed or undergoes a deformation less than said marking,
- Said foam passes through said sheet to overmold said cap at said marking.
- the web is not deformed.
- the sheet undergoes a deformation less than that of said marking.
- the fact that the foam of the block passes through the ply to overmold the cap at the marking allows said foam to maintain the concave shape of said marking.
- the invention proposes a seat comprising such a quilting and a method of manufacturing such a quilting.
- FIGS. 1a to 1c are fragmentary diagrammatic sectional views of different stages of manufacture of the padding, detailing the attachment of the comfort layer to the cap (FIG. 1a), the attachment of the heating mat to the layer. of comfort ( Figure 1b) and overmolding of the assembly by a foam leading to a padding block ( Figure 1c),
- FIG. 2 is a partial schematic sectional view of a padding obtained by the process schematized in FIGS. 1a to 1c.
- a padding 1 of a motor vehicle seat said padding comprising, successively associated with each other:
- a cap 2 comprising a coating format 3 intended to be heated, said cap being provided with a decorative concave marking,
- Said comfort layer is provided with at least one cutout forming a slot arranged to receive said marking, so that, opposite said marking, said sheet is not deformed or undergoes a deformation less than said marking,
- Said foam passes through said sheet to overmold said cap at said marking.
- the latitude is left to leave part of said cap outside the molding cavity 23, so that said non-cavity portion is not overmolded by the padding block 22.
- the non-overmolded cap portion 2 may be in its periphery.
- the format 3 comprises a layer of coating material 4 - for example fabric - and an underlayer 5 of elastically compressible foam.
- the underlayer 5 of foam has a thickness of between 1 and 10 mm.
- the underlayer 5 of foam is based on polyurethane,
- the underlayer 5 of foam has a density of between 0.025 and 0.045.
- the foam sub-layer 5 is associated, on its face opposite to that receiving the layer of coating material 4, with an additional layer of mesh.
- the filament network 7 is disposed on the face of the support sheet 8 facing the padding block 22, so that said filaments are as imperceptible as possible to the touch for a seat occupant.
- the filaments 7 are based on metal and are surrounded by a protective insulating sheath.
- the filaments 7 have a circular section of diameter between 0.7 and 2 mm, which leads to the formation of a sheet 6 of significant stiffness for which the implementation of the invention is particularly relevant.
- the comfort layer 9 is elastically compressible foam.
- the light 10 comprises, in particular by being filled, a portion 21 of foam which has passed through the sheet 6 to overmold the cap 2 at the marking 15.
- the thickness of the comfort layer 9 will be adapted by those skilled in the art so that the sheet 6, particularly when it has a high rigidity, is slightly deformed at the marking 15. In particular, this thickness may in particular be understood between 2 and 10 mm.
- the comfort layer 9 is based on polyurethane
- the comfort layer 9 has a density of between 0.025 and 0.045.
- a motor vehicle seat comprising a frame and such padding 1, said padding being mounted in overlapping of said frame.
- a cap 2 comprising a coating format 3 intended to be heated
- a comfort layer 9 said layer being provided with at least one cutout forming a light 10
- said cap comprising said format, in an injection-reaction molding mold 17, said sheet being turned towards the molding cavity 23 of said mold, said mold being provided with a projecting protrusion protruding in said cavity and receiving said marking, the wall of said cavity receiving said cap portion also being provided with orifices 19 communicating with a suction device,
- the bonding of the ply 6 in the back of the comfort layer 9 is done according to the following steps:
- melt index measured according to standard NF T 51-016 at 190 ° C. with a forced flow capillary rheometer whose piston is loaded with a mass of 2.160 kg, is greater than 15 g / 10 min.
- melt index of the film 14 measured according to standard NF T 51 -016 at 190 ° C with a forced flow capillary rheometer whose piston is loaded with a mass of 2.160 kg is less than 50 g / 10 min.
- the melt index of the film 14, measured according to standard NF T 51 -016 at 190 ° C. with a forced flow capillary rheometer whose piston is loaded with a mass of 2.160 kg is equal to 25 ⁇ 3 g / 10 min.
- the film 14 has a thickness of between 15 and 30 microns.
- the density of the film 14 is 1.20 ⁇ 0.05.
- the film 14 exhibits in scanning differential scanning calorimetry (DSC), performed according to the ISO 1,1357 standard, a melting peak located at 49 ⁇ 2 ° C.
- DSC scanning differential scanning calorimetry
- the polyol used to make the film 14 is based on polyester.
- the isocyanate used to make the film 14 comprises an aromatic group. The choice of such a film 14 results from a fine selection following a large number of tests carried out by the applicant.
- the essential parameters were, on the one hand, the melting temperature and, on the other hand, the fluidity of the film 14 in the molten state.
- the Applicant has notably observed that a film 14 having a melt in the molten state could not degrade so as to lose its seal.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1758762A FR3071203B1 (fr) | 2017-09-21 | 2017-09-21 | Matelassure de siege de vehicule automobile |
PCT/FR2018/052296 WO2019058059A1 (fr) | 2017-09-21 | 2018-09-20 | Matelassure de siège de véhicule automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3684644A1 true EP3684644A1 (fr) | 2020-07-29 |
Family
ID=60515587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18800694.4A Withdrawn EP3684644A1 (fr) | 2017-09-21 | 2018-09-20 | Matelassure de siège de véhicule automobile |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3684644A1 (fr) |
FR (1) | FR3071203B1 (fr) |
WO (1) | WO2019058059A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114434880B (zh) * | 2022-01-20 | 2023-11-17 | 绍兴嘉松针织有限公司 | 温度隔断户外面料及其应用 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6489595B1 (en) * | 2001-03-12 | 2002-12-03 | Check Corporation | Electric heater for a seat assembly |
US6969827B2 (en) * | 2002-09-04 | 2005-11-29 | Matsushita Electric Industrial Co., Ltd. | Heated seat assembly and method of manufacturing the same |
-
2017
- 2017-09-21 FR FR1758762A patent/FR3071203B1/fr active Active
-
2018
- 2018-09-20 WO PCT/FR2018/052296 patent/WO2019058059A1/fr unknown
- 2018-09-20 EP EP18800694.4A patent/EP3684644A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
FR3071203A1 (fr) | 2019-03-22 |
WO2019058059A1 (fr) | 2019-03-28 |
FR3071203B1 (fr) | 2019-10-25 |
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