DE10255453A1 - Foamed vehicle seat part manufacture involves coverage of areas of the molding tool with a reactive polyurethane before filling the tool with plastic foam - Google Patents

Foamed vehicle seat part manufacture involves coverage of areas of the molding tool with a reactive polyurethane before filling the tool with plastic foam

Info

Publication number
DE10255453A1
DE10255453A1 DE10255453A DE10255453A DE10255453A1 DE 10255453 A1 DE10255453 A1 DE 10255453A1 DE 10255453 A DE10255453 A DE 10255453A DE 10255453 A DE10255453 A DE 10255453A DE 10255453 A1 DE10255453 A1 DE 10255453A1
Authority
DE
Germany
Prior art keywords
foam
characterized
molded body
tool
seat part
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Withdrawn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
DE10255453A
Other languages
German (de)
Inventor
Erik Wagner
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE10255453A priority Critical patent/DE10255453A1/en
Publication of DE10255453A1 publication Critical patent/DE10255453A1/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/70Upholstery springs ; Upholstery
    • B60N2/7017Manufacturing methods specially adapted therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02Shaping 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
    • B29C44/12Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1271Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed parts being partially covered
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/58Seat coverings
    • B60N2/5891Manufacturing methods specially adapted therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02Shaping 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
    • B29C44/12Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining

Abstract

According to the invention, the production of a foam molded body, in particular the seat part of a motor vehicle, which is at least partially covered with a protective coating on the outer surface of the molded body, is considerably simplified in that the molded surface of the foaming tool is filled with a foam in the molded body regions before the foam is filled highly reactive multicomponent mixture of a plastic material which is wear-resistant and reduces friction noise in the hardened state and at least partially consolidates it and then the foam material is poured into the foaming tool and cured with a flat bond with the plastic material.

Description

  • The invention relates to a Process for producing a foam molded article and on a process produced according to the process Moldings, 9 according to the preamble of claim 1.
  • It is known to seat parts of motor vehicles Soft foam body with integrated reinforcement inserts to produce and then on the seat side available with a ready-made textile dress, which on Soft foam body previously foamed Fasteners is hooked. To get the foam structure on the bottom or back of the seat part, which is not covered by the textile dress damage to protect them, especially in the seating area of the seat frame Areas with a wear-resistant coating, mostly made of a plastic fabric. For this purpose, a corresponding Tissue cutting manually in the foaming tool fixed in such a way that it becomes firm during the subsequent foam entry and wrinkle-free connects with the foam structure. Before installation the seat part thus manufactured finally becomes a lubricant on the protective cover sprayed, through which those caused by the so-called stick-slip effect creaking noises should be prevented in the seating area of the seat frame.
  • The object of the invention is a Method and a foam molded body of the aforementioned Type in such a way that the manufacturing effort is significantly reduced becomes.
  • This object is achieved by the characterized in claim 1 or the method in claim 9 marked foam molded body solved.
  • According to the invention with the help of the foaming tool not just the foam body itself, but in the same work process also in defined areas of the foam body with this integrally bonded coating from a wear-resistant and noise-reducing plastic material prepared. This saves manually inserting a pre-made one Fabric cutting and the subsequent spray on an anticrystalline, with the result of a significant simplification of production, what especially in the mass production of motor vehicle seat or backrest cushions is a crucial advantage. Because the multi-component mixture is at least partially cured when the foam is introduced, at the same time becomes a Penetration of foam material effective in the mixture application prevented and thus a perfect condition of the plastic coating guaranteed.
  • To undesired flow movements of the in the initial state to prevent viscous multi-component mixtures in the foaming tool and the waiting time between application and reaching the - at least partially - hardened mixture state, that is, until the foam is introduced, thereby shortening the manufacturing process will accelerate further for preferably the plastic coating uses a highly reactive multi-component mixture and / or that Preheated molding tool before applying the multi-component mixture. In further, manufacturing simplification the multi-component mixture is expediently robot-controlled on the molding surface of the foaming applied, preferably as a spray in such a way that the individual mixture components without an undesired pre-reaction only on spray nozzle mixed and then in fine distribution and in the already reacted Condition on the molding surface of the foaming tool reach.
  • Has as a particularly suitable plastic material for the molded article coating proved polyurethane, which has a high strength in the cured state and has elongation at break. This is particularly preferred prefabricated Textile dress attached directly to the plastic cover, so that on dispenses with the otherwise necessary, foamed-in fastening elements can be.
  • The invention is now based on of an embodiment explained in connection with the drawings. It show in a highly schematic Presentation:
  • 1 a motor vehicle seat designed according to the invention;
  • 2 the lower mold half of a foaming tool when spraying the multi-component mixture;
  • 3 the foaming tool in the closed state after the foam has been introduced; and
  • 4 the ready-to-install seat part.
  • The motor vehicle seat parts shown in the figures 1 and 2 each consist of a soft foam molded body reinforced by inserts which are also foamed in - not shown in the figures 3 , the seat side with a prefabricated textile dress 4 coated and on the back or underside with an integrally foamed, wear-resistant and friction noise-reducing plastic cover 5 , preferably made of polyurethane with an elongation at break of approx. 400%, a Shore hardness of 80-100 A, a tensile strength of 20-40 N / mm and a tear strength of approx. 50 N / mm.
  • For the production of the shaped body 3 serves one on the molding surface 6 foaming tool coated with a release agent 7 whose lower part of the tool 8th in the areas of the molding 3 with the help of a robot 10 ( 2 ) is sprayed with a viscous multi-component mixture, which from the to the plastic coating 5 curing individual components, i.e. polyol and isocyanate. A highly reactive multi-component mixture and the lower tool are used to accelerate the curing process 8th preheated. The plastic components are in the spray head 9 of the robot 10 mixed and applied in the form of a fine spray to the areas of the mold surface to be coated. Due to the high reaction rate of the multi-component mixture, the layer thickness can be varied locally, as shown in the 2 - 4 is indicated by the thickening in the contact area of the seat frame.
  • As soon as the plastic is at least partially cured, the foaming tool 7 closed and infested with the foam material. When hardening, this forms a firm, flat connection with the plastic coating 5 ,
  • After removing the soft foam body 3 this is the seat side with the prefabricated textile dress 4 ( 4 ), such that the textile dress 4 on the edge directly with the plastic coating 5 sewn (seams 12 ) and through the foam body 3 sweeping and on the plastic cover 5 anchored drawstrings 13 is locally braced with the soft foam material, whereupon the seat cushion thus completed 1 or the backrest cushion manufactured in a similar manner 2 is ready for installation.

Claims (13)

  1. Method for producing a foam molded body, in particular a foam seat part of a motor vehicle, with the aid of a foam tool filled with the foam and applying a coating to at least a portion of the outer surface of the molded body, characterized in that the molded surface of the foam tool before the foam is filled coated in the molded part areas to be coated with a multicomponent mixture of a wear-resistant and friction-reducing plastic material in the hardened state and this is at least partially consolidated and then the foam material is poured into the foaming tool and cured with a flat connection with the plastic material.
  2. A method according to claim 1, characterized in that the molding surface of the foaming tool is coated with a highly reactive multi-component mixture.
  3. A method according to claim 1 or 2, characterized in that that the foaming tool is preheated before applying the multicomponent mixture.
  4. Method according to one of the preceding claims, characterized characterized that the multi-component mixture is robot-controlled on the molding surface of the foaming tool is sprayed on.
  5. Method according to one of the preceding claims, characterized characterized that the molding surface of the foaming tool before applying the multi-component mixture with a release agent is coated.
  6. Method according to one of the preceding claims, characterized characterized in that the outer surface areas kept free from the plastic coating of the shaped body be covered with a ready-made textile dress and that Textile dress on the plastic cover is attached.
  7. Method according to one of the preceding claims, characterized characterized in that the multi-component mixture with a locally increased layer thickness on the molding surface of the foaming tool is applied.
  8. Method according to one of the preceding claims, characterized characterized in that the multi-component mixture of polyurethane consists.
  9. Foam molded body, in particular seat part ( 1 . 2 ) for a motor vehicle, with a coating that at least partially covers the outer surface of the molded body ( 5 ), characterized in that the coating ( 5 ) from one into the foaming tool ( 7 ) of the molded body ( 3 ) sprayed, before the filling of the foam at least partially cured multi-component mixture of a wear-resistant and friction noise reducing plastic material.
  10. Foam molded body according to claim 9, characterized in that the coating ( 5 ) consists of polyurethane and has a Shore hardness between 80 and 100 A, a tensile strength between 20 and 50 N / mm and an elongation at break of approx. 400%.
  11. Foam molded body according to claim 9 or 10, characterized in that the coating ( 5 ) on the bottom or back of a foam seat part ( 1 . 2 ) is arranged.
  12. Foam molded body according to claim 11, characterized in that the top or front of the seat part ( 1 . 2 ) with a pre-assembled textile dress ( 4 ) and this on the plastic cover ( 5 ) the seat part is attached.
  13. Foam molded body according to claim 12, characterized in that for fastening the textile dress ( 4 ) penetrating the foam material, on the one hand on the textile dress and on the other hand on the plastic cover ( 5 ) anchored drawstrings ( 13 ) are provided.
DE10255453A 2002-11-28 2002-11-28 Foamed vehicle seat part manufacture involves coverage of areas of the molding tool with a reactive polyurethane before filling the tool with plastic foam Withdrawn DE10255453A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10255453A DE10255453A1 (en) 2002-11-28 2002-11-28 Foamed vehicle seat part manufacture involves coverage of areas of the molding tool with a reactive polyurethane before filling the tool with plastic foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10255453A DE10255453A1 (en) 2002-11-28 2002-11-28 Foamed vehicle seat part manufacture involves coverage of areas of the molding tool with a reactive polyurethane before filling the tool with plastic foam

Publications (1)

Publication Number Publication Date
DE10255453A1 true DE10255453A1 (en) 2004-06-09

Family

ID=32308786

Family Applications (1)

Application Number Title Priority Date Filing Date
DE10255453A Withdrawn DE10255453A1 (en) 2002-11-28 2002-11-28 Foamed vehicle seat part manufacture involves coverage of areas of the molding tool with a reactive polyurethane before filling the tool with plastic foam

Country Status (1)

Country Link
DE (1) DE10255453A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005018916A1 (en) * 2003-08-20 2005-03-03 Johnson Controls Gmbh Upholstery part, in particular equipment for the interior of a motor vehicle, method for producing said part and seat
WO2006105874A1 (en) * 2005-04-04 2006-10-12 Johnson Controls Gmbh Upholstery element and production process
DE102008022898A1 (en) * 2008-05-08 2009-11-12 Faurecia Autositze Gmbh Vehicle seat i.e. motor vehicle seat, manufacturing method for land vehicle, involves molding dimensionally stable seat cushion subshell made of plastic using injection mold, where seat cushion subshell is padded
DE102013007335A1 (en) 2013-04-27 2014-10-30 Sitech Sitztechnik Gmbh Durable antique resin coating

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2035489A1 (en) * 1969-07-18 1971-01-28
DE3718064C1 (en) * 1987-05-28 1988-12-15 Grammer Sitzsysteme Gmbh Back-foamed cushion part
DE3817509A1 (en) * 1988-05-24 1989-12-07 Solvay Werke Gmbh A process for the production of shaped articles
DE3926421A1 (en) * 1989-08-10 1991-02-14 Bayerische Motoren Werke Ag Seat for vehicles - made of specified lining for producing in polyurethane foam mould
DE4107454A1 (en) * 1991-03-08 1992-09-10 Basf Ag A composite element of a cover and traegerschicht from thermoplastic polyurethanes, a process for their preparation and their use
EP0642411B1 (en) * 1992-05-18 1997-12-10 Recticel Method for manufacturing self-supporting synthetic trim parts

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2035489A1 (en) * 1969-07-18 1971-01-28
DE3718064C1 (en) * 1987-05-28 1988-12-15 Grammer Sitzsysteme Gmbh Back-foamed cushion part
DE3817509A1 (en) * 1988-05-24 1989-12-07 Solvay Werke Gmbh A process for the production of shaped articles
DE3926421A1 (en) * 1989-08-10 1991-02-14 Bayerische Motoren Werke Ag Seat for vehicles - made of specified lining for producing in polyurethane foam mould
DE4107454A1 (en) * 1991-03-08 1992-09-10 Basf Ag A composite element of a cover and traegerschicht from thermoplastic polyurethanes, a process for their preparation and their use
EP0642411B1 (en) * 1992-05-18 1997-12-10 Recticel Method for manufacturing self-supporting synthetic trim parts

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
VIEWEG,Richard,u.a.: Plyurethane, Kunststoff-Handbuch,Bd.VII, Carl Hanser-Verlag München,1966,S.479 *
VIEWEG,Richard,u.a.: Plyurethane, Kunststoff-Handbuch,Bd.VII, Carl Hanser-Verlag München,1966,S.479;

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005018916A1 (en) * 2003-08-20 2005-03-03 Johnson Controls Gmbh Upholstery part, in particular equipment for the interior of a motor vehicle, method for producing said part and seat
WO2006105874A1 (en) * 2005-04-04 2006-10-12 Johnson Controls Gmbh Upholstery element and production process
DE102008022898A1 (en) * 2008-05-08 2009-11-12 Faurecia Autositze Gmbh Vehicle seat i.e. motor vehicle seat, manufacturing method for land vehicle, involves molding dimensionally stable seat cushion subshell made of plastic using injection mold, where seat cushion subshell is padded
DE102013007335A1 (en) 2013-04-27 2014-10-30 Sitech Sitztechnik Gmbh Durable antique resin coating

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Legal Events

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OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8139 Disposal/non-payment of the annual fee