FR3040664B1 - MATTRESS FOR COMPONENT OF SEAT OF MOTOR VEHICLE - Google Patents

MATTRESS FOR COMPONENT OF SEAT OF MOTOR VEHICLE Download PDF

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Publication number
FR3040664B1
FR3040664B1 FR1558256A FR1558256A FR3040664B1 FR 3040664 B1 FR3040664 B1 FR 3040664B1 FR 1558256 A FR1558256 A FR 1558256A FR 1558256 A FR1558256 A FR 1558256A FR 3040664 B1 FR3040664 B1 FR 3040664B1
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France
Prior art keywords
format
padding
inserts
edge
face
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Active
Application number
FR1558256A
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French (fr)
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FR3040664A1 (en
Inventor
Corinne Maquin
Dominique Noiret
Thierry Mougel
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Tesca Pacific SAS
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Cera TSC
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Priority to FR1558256A priority Critical patent/FR3040664B1/en
Publication of FR3040664A1 publication Critical patent/FR3040664A1/en
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Publication of FR3040664B1 publication Critical patent/FR3040664B1/en
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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
    • B60N2/58—Seat coverings
    • B60N2/5816—Seat coverings attachments thereof
    • B60N2/5883—Seat coverings attachments thereof by sewing, stitching or threading
    • 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
    • B60N2/5891—Seat coverings characterised by the manufacturing process; manufacturing seat coverings 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
    • B60N2/70—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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1285—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being foamed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/141—Hiding joints in the lining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/145—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining the lining being a laminate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0063—Density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding

Abstract

L'invention concerne une matelassure (1) comprenant : une coiffe (2) de revêtement comprenant au moins deux empiècements (3) de couche de revêtement associés par une ligne de couture (5) dans une zone de liaison (6), lesdits empiècements étant chacun pourvu d'un format (7) de couche d'envers de confort ; un bloc de rembourrage (8) surmoulant ladite coiffe ; pour chacun desdits empiècements, dans ladite zone de liaison : le bord (9) de la face externe (10) dudit format correspondant est disposé en retrait de ladite ligne de couture de manière à ménager une bande (11) dépourvu de couche d'envers ; ladite bande est repliée d'un quart de tour vers l'intérieur, de sorte que sa face d'envers (12) recouvre la tranche (13) dudit format, ladite ligne de couture étant située au-delà de la face interne (18) dudit format en se dirigeant vers l'intérieur.The invention relates to a padding (1) comprising: a covering cap (2) comprising at least two overlapping layers (3) of coating layer associated with a seam line (5) in a connecting zone (6), said inserts each being provided with a comfort back layer format (7); a padding block (8) overmolding said cap; for each of said inserts, in said connecting zone: the edge (9) of the outer face (10) of said corresponding format is set back from said sewing line so as to provide a strip (11) without a backing layer ; said strip is bent a quarter of a turn inwards, so that its back side (12) covers the edge (13) of said size, said seam line being located beyond the inner face (18). ) of said format while moving inwards.

Description

L’invention concerne une matelassure pour composant de siège de véhicule automobile, un siège comprenant une telle matelassure et un procédé de réalisation d’une telle matelassure. II est connu de réaliser une matelassure pour composant de siège de véhicule automobile - notamment sous forme d’assise, de dossier ou d’appui-tête -, ladite matelassure comprenant : • une coiffe de revêtement, ladite coiffe comprenant au moins deux empiècements de couche de revêtement - notamment à base de cuir, tissu ou textile enduit de plastique -, lesdits empiècements étant associés, bord à bord et face d’aspect contre face d’aspect, par une ligne de couture dans une zone de liaison, lesdits empiècements étant chacun pourvu d’un format de couche d’envers de confort, • un bloc de rembourrage à base de mousse - notamment de polyuréthanne - élastiquement compressible surmoulant ladite coiffe.The invention relates to a quilting for a motor vehicle seat component, a seat comprising such a padding and a method for producing such padding. It is known to produce a padding for a motor vehicle seat component - in particular in the form of a seat, backrest or headrest -, said padding comprising: a covering cap, said cap comprising at least two inserts of coating layer - in particular of leather, fabric or textile coated with plastic -, said inserts being associated, edge to edge and face of appearance against face of appearance, by a seam line in a binding zone, said inserts each being provided with a comfort backing layer format, • a pad of padding based on foam - in particular of polyurethane - elastically compressible overmolding said cap.

Avec un tel agencement, on dispose dans la zone de liaison d’une couture définissant un talon de couture tourné vers l’intérieur. A l’issue de l’opération de surmoulage, la coiffe présente usuellement un aspect tendu, épousant la surface du bloc, la ligne de couture et le talon se trouvant ainsi à faible distance de l’occupant du siège, ce qui crée une zone « dure », c'est à dire de moindre souplesse, s’étendant le long de ladite ligne, entraînant un inconfort pour l’occupant du siège. L’invention a pour but de pallier cet inconvénient. A cet effet, et selon un premier aspect, l’invention propose une matelassure pour composant de siège de véhicule automobile - notamment sous forme d’assise, de dossier ou d’appui-tête -, ladite matelassure comprenant : • une coiffe de revêtement, ladite coiffe comprenant au moins deux empiècements de couche de revêtement - notamment à base de cuir, tissu ou textile enduit de plastique -, lesdits empiècements étant associés, bord à bord et face d’aspect contre face d’aspect, par une ligne de couture dans une zone de liaison, lesdits empiècements étant chacun pourvu d’un format de couche d’envers de confort, • un bloc de rembourrage à base de mousse - notamment de polyuréthanne - élastiquement compressible surmoulant ladite coiffe, sachant que, dans ladite zone de liaison, pour chacun desdits empiècements : • le bord de la face externe dudit format correspondant est disposé en retrait de ladite ligne de couture de manière à ménager une bande dudit empiècement dépourvu de couche d’envers, • ladite bande est repliée d’un quart de tour vers l’intérieur, de sorte que sa face d’envers recouvre la tranche dudit format, ladite ligne de couture étant située au-delà de la face interne dudit format en se dirigeant vers l’intérieur, de manière à ne pas être perceptible au toucher quand ledit format est comprimé par appui de l’occupant dudit siège.With such an arrangement, there is in the connection area a seam defining a seam stub facing inwardly. After the overmolding operation, the cap usually has a taut appearance, matching the surface of the block, the seam line and the heel thus being at a short distance from the occupant of the seat, which creates a zone "Hard", ie less flexible, extending along said line, causing discomfort for the occupant of the seat. The invention aims to overcome this disadvantage. For this purpose, and according to a first aspect, the invention proposes a padding for a motor vehicle seat component - in particular in the form of a seat, backrest or headrest -, said padding comprising: • a covering cap , said cap comprising at least two layers of coating layer - in particular based on leather, fabric or textile coated with plastic -, said inserts being associated, edge to edge and face of appearance against face of appearance, by a line of sewing in a binding zone, said inserts each being provided with a comfort backing layer format, a pad of foam-based padding - in particular of polyurethane - elastically compressible over-molding said cap, knowing that in said zone binding, for each of said inserts: the edge of the outer face of said corresponding format is set back from said seam line so as to provide a band of said yoke devoid of a backing layer, • said strip is folded a quarter of a turn inwards, so that its backside covers the edge of said size, said seam line being located beyond the face internal of said format in going inward, so as not to be perceptible to the touch when said format is compressed by support of the occupant of said seat.

Avec l’agencement proposé, la ligne de couture et le talon se trouvent éloignés de l’occupant du siège, ce qui supprime la zone « dure », connue de l’art antérieur, s’étendant le long de ladite ligne, et optimise ainsi le confort pour l’occupant du siège.With the proposed arrangement, the seam line and the heel are remote from the occupant of the seat, which eliminates the "hard" zone, known from the prior art, extending along said line, and optimizes thus the comfort for the occupant of the seat.

Selon d’autres aspects, l’invention propose un siège comprenant une telle matelassure et un procédé de réalisation d’une telle matelassure. D’autres particularités et avantages de l’invention apparaîtront dans la description qui suit, faite en référence à la figure jointe qui est une vue en coupe schématique partielle d’une matelassure selon une réalisation.According to other aspects, the invention proposes a seat comprising such a padding and a method of producing such padding. Other features and advantages of the invention will appear in the description which follows, made with reference to the attached figure which is a partial schematic sectional view of a padding according to one embodiment.

En référence aux figures, on décrit une matelassure 1 pour composant de siège de véhicule automobile - notamment sous forme d’assise, de dossier ou d’appui-tête -, ladite matelassure comprenant : • une coiffe 2 de revêtement, ladite coiffe comprenant au moins deux empiècements 3 de couche de revêtement - notamment à base de cuir, tissu ou textile enduit de plastique -, lesdits empiècements étant associés, bord à bord et face d’aspect 4 contre face d’aspect 4, par une ligne de couture 5 dans une zone de liaison 6, lesdits empiècements étant chacun pourvu d’un format 7 de couche d’envers de confort, • un bloc de rembourrage 8 à base de mousse - notamment de polyuréthanne - élastiquement compressible surmoulant ladite coiffe, ladite couche d’envers de confort étant notamment de moindre résistance à la compression que la mousse dudit bloc, sachant que, dans ladite zone de liaison, pour chacun desdits empiècements : • le bord 9 de la face externe 10 dudit format correspondant est disposé en retrait de ladite ligne de couture de manière à ménager une bande 11 dudit empiècement dépourvu de couche d’envers, • ladite bande est repliée d’un quart de tour vers l’intérieur, de sorte que sa face d’envers 12 recouvre la tranche 13 dudit format, ladite ligne de couture étant située au-delà de la face interne 18 dudit format en se dirigeant vers l’intérieur, de manière à ne pas être perceptible au toucher quand ledit format est comprimé par appui de l’occupant dudit siège.Referring to the figures, a padding 1 for a motor vehicle seat component is described, in particular in the form of a seat, backrest or headrest, said padding comprising: a covering cap 2, said cap comprising minus two layers 3 of coating layer - in particular based on leather, fabric or textile coated with plastic - said panels being associated, edge to edge and face of appearance 4 against face of appearance 4, by a seam 5 in a connecting zone 6, said inserts each being provided with a comfort backing layer format; a padding block 8 based on a foam - in particular an elastically compressible polyurethane - over-molding said cap, said layer of back of comfort being in particular of lower compressive strength than the foam of said block, knowing that in said connection zone, for each of said inserts: • the edge 9 of the outer face 1 0 of said corresponding format is set back from said seam line so as to provide a strip 11 of said yoke without a backing layer, • said strip is folded a quarter turn inwards, so that its face 12 of the above-mentioned portion covers said slice 13, said stitching line being located beyond the internal face 18 of said format while moving inwards, so as not to be perceptible to the touch when said format is compressed by support of the occupant of said seat.

Selon la réalisation représentée, un format 7 de couche d’envers comprend au moins deux - et en particulier deux dans la réalisation représentée - sous-couches 14,15 de résistance à la compression différente, ladite sous-couche tournée vers l’extérieur 15 étant notamment de moindre résistance à la compression que ladite sous couche tournée vers l’intérieur 14.According to the embodiment shown, a backing layer format 7 comprises at least two - and in particular two in the embodiment shown - sub-layers 14, 15 of different compressive strength, said under-layer facing outwards. in particular being of lower compressive strength than said inwardly facing sublayer 14.

Selon une réalisation, un format 7 de couche d’envers est associé à l’empiècement 3 correspondant par fusion superficielle à chaud dudit format ou par collage.According to one embodiment, a format of backing layer 7 is associated with the corresponding yoke 3 by hot surface fusion of said format or by gluing.

Selon une réalisation, un format 7 de couche d’envers comprend de la mousse élastiquement compressible - notamment de polyuréthanne ou de polyester, notamment de densité comprise entre 0,02 et 0,04 - ou du feutre.According to one embodiment, a backing layer format 7 comprises elastically compressible foam - in particular polyurethane or polyester, especially with a density of between 0.02 and 0.04 - or felt.

Selon une réalisation, la couture est sous forme de surjet, de manière à empêcher une pénétration de la mousse du bloc 8 au niveau du talon de couture 16 entre les empiècements 3.According to one embodiment, the seam is in the form of an overlock so as to prevent penetration of the foam of the block 8 at the level of the stitching heel 16 between the inserts 3.

Selon une réalisation, la cote 17 entre la ligne de couture 5 et la face interne 18 d’un format 7, selon une direction perpendiculaire à ladite face interne, est supérieure ou égale à 1 mm.According to one embodiment, the dimension 17 between the seam line 5 and the inner face 18 of a format 7, in a direction perpendicular to said inner face, is greater than or equal to 1 mm.

Selon une réalisation, l’épaisseur d’un format 7 est au moins de 25 mm, et notamment de l’ordre de 30 mm, ceci de manière à optimiser le confort en zone de liaison 6.According to one embodiment, the thickness of a format 7 is at least 25 mm, and in particular of the order of 30 mm, so as to optimize the comfort in the connection zone 6.

On décrit à présent, de façon non représentée, un siège de véhicule automobile comprenant une armature de composant et une matelassure 1, ladite matelassure étant associée en recouvrement de ladite armature.There is now described, not shown, a motor vehicle seat comprising a component frame and a padding 1, said padding being associated in overlap of said frame.

On décrit enfin, un procédé de réalisation d’une matelassure 1 comprenant les étapes suivantes : • prévoir une coiffe 2 de revêtement comprenant au moins deux empiècements 3 de couche de revêtement - notamment à base de cuir, tissu ou textile enduit de plastique -, lesdits empiècements étant associés, bord à bord et face d’aspect 4 contre face d’aspect 4, par une ligne de couture 5 dans une zone de liaison 6, lesdits empiècements étant chacun pourvu d’un format 7 de couche d’envers de confort, le bord 9 de la face externe 10 dudit format correspondant étant disposé en retrait de ladite ligne de couture de manière à ménager une bande 11 dudit empiècement dépourvu de couche d’envers, • disposer ladite coiffe dans un moule, lesdits empiècements étant disposés contre la paroi dudit moule, ledit moule comprenant une lame de positionnement, chacune desdites bandes étant repliée d’un quart de tour vers l’intérieur et sa face d’aspect 4 étant disposée contre ladite lame, de sorte que sa face d’envers 12 recouvre la tranche 13 dudit format, ladite ligne de couture étant disposée au-delà de la face interne 18 dudit format en se dirigeant vers l’intérieur, • injecter un mélange précurseur de mousse - notamment de polyuréthanne - élastiquement compressible de manière à former un bloc de rembourrage 8 surmoulant ladite coiffe.Finally, a method of producing a padding 1 comprising the following steps: • providing a covering cap 2 comprising at least two layers 3 of coating layer - in particular based on leather, fabric or textile coated with plastic -, said inserts being associated, edge to edge and face of appearance 4 against face of appearance 4, by a seam line 5 in a connecting zone 6, said inserts being each provided with a format 7 of backing layer of comfort, the edge 9 of the outer face 10 of said corresponding format being set back from said seam line so as to provide a strip 11 of said yoke without a backing layer, • to arrange said cap in a mold, said yokes being disposed against the wall of said mold, said mold comprising a positioning blade, each of said strips being folded a quarter of a turn inwards and its aspect face 4 being disposed against said blade, so that its rear face 12 covers the wafer 13 of said format, said seam line being disposed beyond the inner face 18 of said format while moving inwards, • inject a precursor mixture of foam - in particular polyurethane - elastically compressible so as to form a padding block 8 overmolding said cap.

Selon une réalisation, il peut être prévu un dispositif d’aspiration dans le moule de manière à bien plaquer la coiffe 2 contre la paroi dudit moule.According to one embodiment, it can be provided a suction device in the mold so as to press the cap 2 against the wall of said mold.

On peut aussi prévoir de disposer en recouvrement de l’envers de la coiffe 2 un film d’étanchéité se dégradant lors de l’expansion de la mousse du bloc 8, ceci afin de minimiser la pénétration superficielle de mousse dans les formats 7, et d’éviter un durcissement des couches d’envers préjudiciable en termes de confort.It is also possible to provide, in overlap with the back of the cap 2, a sealing film that degrades during the expansion of the foam of the block 8, in order to minimize the superficial foam penetration in the formats 7, and to avoid a hardening of back layers prejudicial in terms of comfort.

Claims (8)

REVENDICATIONS 1. Matelassure (1) pour composant de siège de véhicule automobile -notamment sous forme d’assise, de dossier ou d’appui-tête -, ladite matelassure comprenant : • une coiffe (2) de revêtement, ladite coiffe comprenant au moins deux empiècements (3) de couche de revêtement - notamment à base de cuir, tissu ou textile enduit de plastique -, lesdits empiècements étant associés, bord à bord et face d’aspect (4) contre face d’aspect (4), par une ligne de couture (5) dans une zone de liaison (6), lesdits empiècements étant chacun pourvu d’un format (7) de couche d’envers de confort, • un bloc de rembourrage (8) à base de mousse - notamment de polyuréthanne - élastiquement compressible surmoulant ladite coiffe, ladite matelassure étant caractérisée en ce que, dans ladite zone de liaison, pour chacun desdits empiècements : • le bord (9) de la face externe (10) dudit format correspondant est disposé en retrait de ladite ligne de couture de manière à ménager une bande (11 ) dudit empiècement dépourvu de couche d’envers, • ladite bande est repliée d’un quart de tour vers l’intérieur, de sorte que sa face d’envers (12) recouvre la tranche (13) dudit format, ladite ligne de couture étant située au-delà de la face interne (18) dudit format en se dirigeant vers l’intérieur, de manière à ne pas être perceptible au toucher quand ledit format est comprimé par appui de l’occupant dudit siège. un format (7) de couche d’envers comprenant au moins deux sous-couches (14,15) de résistance à la compression différente, ladite sous-couche tournée vers l’extérieur (15) étant de moindre résistance à la compression que ladite sous couche tournée vers l’intérieur (14).1. Padding (1) for a motor vehicle seat component - particularly in the form of a seat, backrest or headrest -, said padding comprising: • a covering cap (2), said cap comprising at least two inserts (3) of coating layer - in particular leather-based, fabric or textile-coated plastic - said inserts being associated, edge to edge and appearance face (4) against appearance face (4), by a seam line (5) in a connecting zone (6), said yokes each being provided with a comfort backing layer (7), • a padding pad (8) made of foam - in particular polyurethane - elastically compressible overmolding said cap, said padding being characterized in that, in said connection zone, for each of said inserts: • the edge (9) of the outer face (10) of said corresponding format is set back from said line sewing so as to mena manage a strip (11) of said yoke without a backing layer, • said strip is folded a quarter turn inwards, so that its backside (12) covers the wafer (13) of said format , said seam line being located beyond the inner face (18) of said size inwardly, so as not to be perceptible to the touch when said format is compressed by support of the occupant of said seat. a backing layer format (7) comprising at least two sub-layers (14, 15) of different compressive strength, said outwardly facing sub-layer (15) being of less compressive strength than said under layer facing inwards (14). 2. Matelassure selon la revendication 1, caractérisée en ce qu’un format (7) de couche d’envers est associé à l’empiècement (3) correspondant par fusion superficielle à chaud dudit format ou par collage.2. padding according to claim 1, characterized in that a format (7) of the backing layer is associated with the corresponding yoke (3) by hot surface fusion of said format or by gluing. 3. Matelassure selon l'une des revendications 1 ou 2, caractérisé en ce qu’un format (7) de couche d’envers comprend de la mousse élastiquement compressible - notamment de polyuréthanne ou de polyester, notamment de densité comprise entre 0,02 et 0,04 - ou du feutre.3. padding according to one of claims 1 or 2, characterized in that a format (7) of backing layer comprises elastically compressible foam - especially polyurethane or polyester, especially with a density between 0.02 and 0.04 - or felt. 4. Matelassure selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la couture est sous forme de surjet, de manière à empêcher une pénétration de la mousse du bloc (8) au niveau du talon de couture (16) entre les empiècements (3).4. padding according to any one of claims 1 to 3, characterized in that the seam is in the form of overlock, so as to prevent penetration of the foam block (8) at the stitching heel (16) between the inserts (3). 5. Matelassure selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la cote (17) entre la ligne de couture (5) et la face interne (18) d’un format (7), selon une direction perpendiculaire à ladite face interne, est supérieure ou égale à 1 mm.5. Padding according to any one of claims 1 to 4, characterized in that the dimension (17) between the seam line (5) and the inner face (18) of a format (7), in a perpendicular direction to said inner face is greater than or equal to 1 mm. 6. Matelassure selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l’épaisseur d’un format (7) est au moins de 25 mm, et notamment de l’ordre de 30 mm.6. padding according to any one of claims 1 to 5, characterized in that the thickness of a format (7) is at least 25 mm, and in particular of the order of 30 mm. 7. Siège de véhicule automobile comprenant une armature de composant et une matelassure selon l'une quelconque des revendications 1 à 6, ladite matelassure étant associée en recouvrement de ladite armature.7. Motor vehicle seat comprising a component frame and padding according to any one of claims 1 to 6, said padding being associated in overlap of said frame. 8. Procédé de réalisation d’une matelassure selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu’il comprend les étapes suivantes : • prévoir une coiffe (2) de revêtement comprenant au moins deux empiècements (3) de couche de revêtement - notamment à base de cuir, tissu ou textile enduit de plastique -, lesdits empiècements étant associés, bord à bord et face d’aspect (4) contre face d’aspect (4), par une ligne de couture (5) dans une zone de liaison (6), lesdits empiècements étant chacun pourvu d’un format (7) de couche d’envers de confort, un format (7) de couche d’envers comprenant au moins deux sous-couches (14,15) de résistance à la compression différente, ladite sous-couche tournée vers l’extérieur (15) étant de moindre résistance à la compression que ladite sous couche tournée vers l’intérieur (14), le bord (9) de la face externe (10) dudit format correspondant étant disposé en retrait de ladite ligne de couture de manière à ménager une bande (11) dudit empiècement dépourvu de couche d’envers, • disposer ladite coiffe dans un moule, lesdits empiècements étant disposés contre la paroi dudit moule, ledit moule comprenant une lame de positionnement, chacune desdites bandes étant repliée d’un quart de tour vers l’intérieur et sa face d’aspect (4) étant disposée contre ladite lame, de sorte que sa face d’envers (12) recouvre la tranche (13) dudit format, ladite ligne de couture étant disposée au-delà de la face interne (18) dudit format en se dirigeant vers l’intérieur, • injecter un mélange précurseur de mousse - notamment de polyuréthanne - élastiquement compressible de manière à former un bloc de rembourrage (8) surmoulant ladite coiffe.8. A method of producing a padding according to any one of claims 1 to 6, characterized in that it comprises the following steps: • provide a cap (2) coating comprising at least two inserts (3) layer coating material, in particular made from leather, fabric or textile coated with plastic, said inserts being associated, edge to edge and appearance face (4) against appearance side (4), by a seam line (5) in a connecting zone (6), said inserts each being provided with a comfort backing layer format (7), a backing layer format (7) comprising at least two underlayers (14, 15 ) of differing compressive strength, said outward facing sub-layer (15) being of lesser compressive strength than said inwardly facing sub-layer (14), the edge (9) of the outer face ( 10) of said corresponding format being set back from said sewing line so as to provide a strip (11) of said yoke without a backing layer, • arranging said cap in a mold, said yokes being disposed against the wall of said mold, said mold comprising a positioning blade, each of said strips being folded over. a quarter turn inwardly and its aspect face (4) being disposed against said blade, so that its back face (12) covers the edge (13) of said size, said seam line being disposed beyond the inner face (18) of said format in the direction of the interior, • inject a precursor mixture of foam - in particular of polyurethane - elastically compressible so as to form a padding block (8) overmolding said cap.
FR1558256A 2015-09-07 2015-09-07 MATTRESS FOR COMPONENT OF SEAT OF MOTOR VEHICLE Active FR3040664B1 (en)

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