FR2912704A1 - Trim element body cover for seat of motor vehicle, has internal face coated by continuous flexible sub-layer at level of sewing areas, where flexible sub-layer is sealed with precursor mixture of foam - Google Patents

Trim element body cover for seat of motor vehicle, has internal face coated by continuous flexible sub-layer at level of sewing areas, where flexible sub-layer is sealed with precursor mixture of foam Download PDF

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Publication number
FR2912704A1
FR2912704A1 FR0701208A FR0701208A FR2912704A1 FR 2912704 A1 FR2912704 A1 FR 2912704A1 FR 0701208 A FR0701208 A FR 0701208A FR 0701208 A FR0701208 A FR 0701208A FR 2912704 A1 FR2912704 A1 FR 2912704A1
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FR
France
Prior art keywords
cap
layer
foam
flexible sub
motor vehicle
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Withdrawn
Application number
FR0701208A
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French (fr)
Inventor
Xavier Bonfils
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centre dEtude et de Recherche pour lAutomobile CERA
Original Assignee
Centre dEtude et de Recherche pour lAutomobile CERA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Centre dEtude et de Recherche pour lAutomobile CERA filed Critical Centre dEtude et de Recherche pour lAutomobile CERA
Priority to FR0701208A priority Critical patent/FR2912704A1/en
Publication of FR2912704A1 publication Critical patent/FR2912704A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • B29C44/1261—Avoiding impregnation of a preformed part
    • 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
    • B29C44/34—Auxiliary operations
    • B29C44/35—Component parts; Details or accessories
    • B29C44/351—Means for preventing foam to leak out from the foaming device during foaming
    • 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

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

The cover (1) has two coating parts (4a, 4b) sewn with respect to each other, and an internal face coated by a continuous flexible sub-layer (6) at the level of sewing areas (5), where the coating parts are made of leather. The flexible sub-layer is sealed with precursor mixture of foam, and is made of polyurethane, silicone or latex. The flexible sub-layer is overmolded by a body (2) of a trim element (3), where the body is made of foam i.e. polyurethane. Independent claims are also included for the following: (1) a method for manufacturing a cover (2) a method for manufacturing a trim element of a motor vehicle seat.

Description

1 L'invention concerne une coiffe de recouvrement d'un corps d'élément deThe invention relates to a covering cap of a body of element of

garnissage de siège de véhicule automobile, un élément comprenant une telle coiffe, un procédé de réalisation d'une telle coiffe et un procédé de réalisation d'un tel élément. II est connu de réaliser une coiffe de recouvrement d'un corps d'élément de garnissage de siège de véhicule automobile, ledit corps étant à base de mousse, notamment de polyuréthanne, destiné à surmouler ladite coiffe, ladite coiffe comprenant au moins deux pièces de revêtement cousues entre elles. 10 Dans une telle réalisation, afin d'empêcher le passage de la mousse au travers de la coiffe, il est prévu de complexer l'envers du revêtement avec une couche de matériau tel qu'une mousse.  motor vehicle seat upholstery, an element comprising such a cap, a method of producing such a cap and a method of producing such an element. It is known to provide a cap covering a motor vehicle seat lining element body, said body being based on foam, in particular polyurethane, for overmolding said cap, said cap comprising at least two pieces of sewn together. In such an embodiment, in order to prevent the foam from passing through the cap, it is intended to complex the backside of the coating with a layer of material such as a foam.

15 De plus, pour pallier au risque de fuite de mousse à travers les zones de couture, il peut être nécessaire d'appliquer sur les coutures des bandes d'étanchéité. L'invention a pour but de remédier à ces inconvénients en proposant une coiffe 20 de fabrication simplifiée permettant de répondre à ces contraintes d'étanchéité.  In addition, to overcome the risk of foam leakage through the stitching areas, it may be necessary to apply sealing strips to the seams. The object of the invention is to remedy these drawbacks by proposing a simplified manufacturing cap 20 which makes it possible to respond to these sealing stresses.

A cet effet, et selon un premier aspect, l'invention propose une coiffe de recouvrement d'un corps d'élément de garnissage de siège de véhicule automobile, ledit corps étant à base de mousse, notamment de polyuréthanne, 25 destinée à surmouler ladite coiffe, ladite coiffe comprenant au moins deux pièces de revêtement cousues entre elles, la face interne de ladite coiffe étant enrobée, y compris au niveau des zones de couture, par une sous couche souple continue, ladite sous couche étant étanche au mélange précurseur de ladite mousse. 30 Ainsi, on évite les fuites de mousse à travers le revêtement et par les zones de couture.5 2 Selon d'autres aspects, l'invention propose un élément comprenant une telle coiffe, un procédé de réalisation d'une telle coiffe et un procédé de réalisation d'un tel élément. 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 schématique en coupe d'un élément de garnissage de siège de véhicule automobile pourvu d'une coiffe selon l'invention. 10 En référence aux figures, on décrit une coiffe 1 de recouvrement d'un corps 2 d'élément 3 de garnissage de siège de véhicule automobile, ledit corps étant à base de mousse, notamment de polyuréthanne, destinée à surmouler ladite coiffe, ladite coiffe comprenant au rnoins deux pièces 4a,4b de revêtement 15 cousues entre elles, la face interne de ladite coiffe étant enrobée, y compris au niveau des zones de couture 5, par une sous couche 6 souple continue, ladite sous couche étant étanche au mélange précurseur de ladite mousse.  For this purpose, and according to a first aspect, the invention proposes a covering cap of a motor vehicle seat lining element body, said body being based on foam, in particular polyurethane, intended to overmold said cap, said cap comprising at least two pieces of coating sewn together, the inner face of said cap being coated, including at the level of the seam areas, by a continuous flexible under layer, said under layer being impervious to the precursor mixture of said foam. Thus, foam leakage through the coating and the seam areas is avoided. In other aspects, the invention provides an element comprising such a cap, a method of making such a cap and a method of making such a cap. method of producing such an element. Other features and advantages of the invention will appear in the description which follows, made with reference to the attached figure which is a schematic sectional view of a motor vehicle seat lining element provided with a cap according to the invention. Referring to the figures, there is described a cap 1 covering a body 2 of element 3 motor vehicle seat lining, said body being based on foam, especially polyurethane, for overmolding said cap, said cap comprising at least two parts 4a, 4b of coating 15 sewn together, the inner face of said cap being coated, including at the level of the seam areas 5, by a continuous flexible sub-layer 6, said under layer being impervious to the precursor mixture of said foam.

Selon une réalisation, les pièces 4a,4b de revêtement sont à base de cuir. 20 Selon une réalisation, la sous couche 6 est à base de polyuréthanne.  According to one embodiment, the parts 4a, 4b of coating are based on leather. In one embodiment, the underlayer 6 is based on polyurethane.

Selon une réalisation, la sous couche 6 est à base de silicone. 25 Selon une réalisation, la sous couche 6 est à base de latex.  In one embodiment, the underlayer 6 is based on silicone. In one embodiment, the underlayer 6 is based on latex.

Dans un élément 3 de garnissage de siège de véhicule automobile, comprenant une coiffe 1, le volume intérieur de ladite coiffe est rempli de mousse formant corps 2, ledit corps surmoulant la sous couche 6. Un procédé de réalisation d'une coiffe 1 comprend les étapes de : • confectionner une enveloppe par couture d'au moins deux pièces 4a,4b de revêtement entre elles, 30 3 • tremper l'envers de ladite enveloppe dans un liquide précurseur de matériau constitutif d'une sous couche 6, de sorte à l'enduire dudit liquide, • sortir ladite enveloppe dudit liquide et activer, par exemple par chauffage, l'enduction liquide de sorte à former ladite sous couche et obtenir ladite coiffe.  In a motor vehicle seat lining element 3, comprising a cap 1, the interior volume of said cap is filled with body foam 2, said body overmolding the underlayer 6. A method of producing a cap 1 comprises the steps of: • making an envelope by sewing at least two pieces 4a, 4b of coating between them, • 3 soaking the reverse side of said envelope in a precursor liquid material constituting a sub-layer 6, so as to coating it with said liquid, withdrawing said envelope from said liquid and activating, for example by heating, the liquid coating so as to form said sub-layer and obtain said cap.

Un procédé de réalisation d'un élément 3 de garnissage de siège de véhicule automobile comprend les étapes du procédé décrit ci-dessus et une étape complémentaire d'injection dans la coiffe 1, une fois disposée dans un moule, d'un mélange précurseur de mousse, de sorte à former, après expansion de la mousse, le corps 2.  A method of producing a motor vehicle seat packing element 3 comprises the steps of the method described above and a complementary step of injection into the cap 1, once arranged in a mold, of a precursor mixture of foam, so as to form, after expansion of the foam, the body 2.

Claims (8)

REVENDICATIONS 1. Coiffe (1) de recouvrement d'un corps (2) d'élément (3) de garnissage de siège de véhicule automobile, ledit corps étant à base de mousse, notamment de polyuréthanne, destinée à surmouler ladite coiffe, ladite coiffe comprenant au moins deux pièces (4a,4b) de revêtement cousues entre elles, ladite coiffe étant caractérisée en ce que sa face interne est enrobée, y compris au niveau des zones de couture (5), par une sous couche (6) souple continue, ladite sous couche étant étanche au mélange précurseur de ladite mousse.  1. Cover (1) covering a body (2) of element (3) motor vehicle seat lining, said body being based on foam, especially polyurethane, for overmolding said cap, said cap comprising at least two pieces (4a, 4b) of coating sewn together, said cap being characterized in that its inner face is coated, including at the level of the seam areas (5), by a continuous flexible underlayer (6), said under layer being impervious to the precursor mixture of said foam. 2. Coiffe selon la revendication 1, les pièces (4a,4b) de revêtement étant à base de cuir.  2. The cap of claim 1, the parts (4a, 4b) coating being based on leather. 3. Coiffe selon la revendication 1 ou 2, la sous couche (6) étant à base de polyuréthanne.  3. The cap according to claim 1 or 2, the under layer (6) being based on polyurethane. 4. Coiffe selon la revendication 1 ou 2, la sous couche (6) étant à base de silicone.  4. Cap according to claim 1 or 2, the underlayer (6) being based on silicone. 5. Coiffe selon la revendication 1 ou 2, la sous couche (6) étant à base de latex.  5. The cap according to claim 1 or 2, the under layer (6) being based on latex. 6. Elément (3) de garnissage de siège de véhicule automobile, comprenant 25 une coiffe selon l'une quelconque des revendications 1 à 5, le volume intérieur de ladite coiffe étant rempli de mousse formant corps (2), ledit corps surmoulant la sous couche (6).  6. Motor vehicle seat packing element (3), comprising a cap according to any one of claims 1 to 5, the inner volume of said cap being filled with body foam (2), said body overmolding the undercap. layer (6). 7. Procédé de réalisation d'une coiffe selon l'une quelconque des 30 revendications 1 à 5, comprenant les étapes de : • confectionner une enveloppe par couture d'au moins deux pièces (4a,4b) de revêtement entre elles,20 • tremper l'envers de ladite enveloppe dans un liquide précurseur de matériau constitutif d'une sous couche (6), de sorte à l'enduire dudit liquide, • sortir ladite enveloppe dudit liquide et activer l'enduction liquide de sorte 5 à former ladite sous couche et obtenir ladite coiffe.  7. A method of making a cap according to any one of claims 1 to 5, comprising the steps of: • making an envelope by sewing at least two pieces (4a, 4b) of coating between them, dipping the backside of said envelope in a precursor liquid of material constituting an underlayer (6), so as to coat it with said liquid, • withdrawing said envelope from said liquid and activating the liquid coating so as to form said under layer and obtain said cap. 8. Procédé de réalisation d'un élément (3) de garnissage de siège de véhicule automobile, comprenant les étapes du procédé selon la revendication 7 et une étape complémentaire d'injection dans la coiffe (1), une fois disposée dans un ~o moule, d'un mélange précurseur de mousse, de sorte à former, après expansion de la mousse, le corps (2).  8. A method of producing a motor vehicle seat packing element (3), comprising the steps of the method according to claim 7 and a complementary injection step in the cap (1), once arranged in a ~ o mold, a precursor mixture of foam, so as to form, after expansion of the foam, the body (2).
FR0701208A 2007-02-20 2007-02-20 Trim element body cover for seat of motor vehicle, has internal face coated by continuous flexible sub-layer at level of sewing areas, where flexible sub-layer is sealed with precursor mixture of foam Withdrawn FR2912704A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0701208A FR2912704A1 (en) 2007-02-20 2007-02-20 Trim element body cover for seat of motor vehicle, has internal face coated by continuous flexible sub-layer at level of sewing areas, where flexible sub-layer is sealed with precursor mixture of foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0701208A FR2912704A1 (en) 2007-02-20 2007-02-20 Trim element body cover for seat of motor vehicle, has internal face coated by continuous flexible sub-layer at level of sewing areas, where flexible sub-layer is sealed with precursor mixture of foam

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FR2912704A1 true FR2912704A1 (en) 2008-08-22

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FR0701208A Withdrawn FR2912704A1 (en) 2007-02-20 2007-02-20 Trim element body cover for seat of motor vehicle, has internal face coated by continuous flexible sub-layer at level of sewing areas, where flexible sub-layer is sealed with precursor mixture of foam

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2939377A1 (en) * 2008-12-08 2010-06-11 Centre Nat Rech Scient Lining cushion for head-rest of motor vehicle, has primary border arranged against face of bead corresponding to secondary coating part, and secondary border arranged against primary coating part, where median zone of band surrounds bead
EP3395531A1 (en) * 2017-04-28 2018-10-31 TESCA France Method for manufacturing a cushion of a motor vehicle seat

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4758294A (en) * 1987-07-10 1988-07-19 Helmut Storch Process for the production of a foam backed article
DE19533367A1 (en) * 1995-09-09 1997-03-13 Ymos Ag Ind Produkte Process for mfg. foam prod. used in vehicles, e.g instrument panels, etc.
DE19961477A1 (en) * 1999-12-20 2001-06-21 Hubert Mense Composite molding for use in car interiors has foam core and covering of textile or synthetic or natural leather with layer of latex between

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4758294A (en) * 1987-07-10 1988-07-19 Helmut Storch Process for the production of a foam backed article
DE19533367A1 (en) * 1995-09-09 1997-03-13 Ymos Ag Ind Produkte Process for mfg. foam prod. used in vehicles, e.g instrument panels, etc.
DE19961477A1 (en) * 1999-12-20 2001-06-21 Hubert Mense Composite molding for use in car interiors has foam core and covering of textile or synthetic or natural leather with layer of latex between

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2939377A1 (en) * 2008-12-08 2010-06-11 Centre Nat Rech Scient Lining cushion for head-rest of motor vehicle, has primary border arranged against face of bead corresponding to secondary coating part, and secondary border arranged against primary coating part, where median zone of band surrounds bead
EP3395531A1 (en) * 2017-04-28 2018-10-31 TESCA France Method for manufacturing a cushion of a motor vehicle seat
FR3065667A1 (en) * 2017-04-28 2018-11-02 Cera Tsc METHOD FOR MAKING A CAR SEAT MAILING OF A MOTOR VEHICLE

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