JP2006082512A - Sheet pad product for vehicle, and its manufacturing method - Google Patents

Sheet pad product for vehicle, and its manufacturing method Download PDF

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Publication number
JP2006082512A
JP2006082512A JP2004272203A JP2004272203A JP2006082512A JP 2006082512 A JP2006082512 A JP 2006082512A JP 2004272203 A JP2004272203 A JP 2004272203A JP 2004272203 A JP2004272203 A JP 2004272203A JP 2006082512 A JP2006082512 A JP 2006082512A
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Prior art keywords
sheet
urethane
seat pad
bonded
manufacturing
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JP4599961B2 (en
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Shunpei Ishida
俊平 石田
Minoru Nakano
実 中野
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Nitto Boseki Co Ltd
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Nitto Boseki Co Ltd
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    • 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
    • B29C44/1252—Removing portions of the preformed parts after the moulding step
    • 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

Landscapes

  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of defects in adhesion due to a releasing agent in a bonding process of a sheet pad for a vehicle and a skin material. <P>SOLUTION: The problem of adhesion of the releasing agent on the surface of urethane foam is solved by a manufacturing method of the sheet pad product for the vehicle comprising the steps of bringing a sheet, which is made by bonding a urethane film and a hot melt sheet bonded to each other in advance, into tight contact with a mold, and then injecting and foaming a urethane resin, and is solved by the sheet pad product having a surface to be bonded to the skin material, on which face is free from deposition of the releasing agent. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、ウレタンフォームに表皮材を接着した車両用座席シート及びその製造方法に関するものである。   The present invention relates to a vehicle seat having a skin material bonded to urethane foam and a method for manufacturing the same.

車両用座席シートには、ウレタン樹脂を発泡させたシートパッドに表皮材を接着して成形したものがある。この車両用座席シートの製造方法としては、ウレタン樹脂を発泡させてシートパッドを先に作成し、このシートパッドに接着剤を塗布して表皮材を接着する方法が一般には使われている。
また、特開昭５４−５５０８６公報には、表皮材とフィルムとを一体としたものを金型内にセットし、ウレタン樹脂を注入して発泡成形して車両用座席シートを製造する方法が記載されている。 Some vehicle seats are formed by bonding a skin material to a seat pad formed by foaming urethane resin. As a method for manufacturing the vehicle seat, a method is generally used in which a urethane resin is foamed to prepare a seat pad first, and an adhesive is applied to the seat pad to adhere a skin material.
Japanese Patent Laid-Open No. 54-55086 describes a method of manufacturing a vehicle seat by placing an integrated skin material and a film in a mold, injecting urethane resin, and performing foam molding. Has been.

しかし、従来の方法には次のような問題点があった。前者の方法では、金型にウレタン樹脂を注入してシートパッドを発泡成型する際に、シートパッドが金型に接着するのを防ぐ為に離型剤を塗布して製造していた。このため、得られたシートパッドの表面には、離型剤が付着しており、そのまま接着剤を塗布又は接着シートで表皮材を接着しても、接着強度がでないため、付着している離型剤を清掃除去した後、接着剤を塗布又は接着シートで表皮材を接着していたが、接着強度がバラつき、接着不良製品が発生していた。
後者の方法では、車両用座席シートが単純な形状の場合には対応できるが、複雑な形状や細かな形状の場合にはその形状を忠実に再現できないという欠点があった。それゆえ、複雑な形状を有する場合や細かな形状を有する場合に対応する製造方法が求められていた。 However, the conventional method has the following problems. In the former method, when a urethane resin is injected into a mold to foam-mold the seat pad, a release agent is applied to prevent the sheet pad from adhering to the mold. For this reason, a release agent is attached to the surface of the obtained seat pad, and even if the adhesive is applied as it is or the skin material is bonded with an adhesive sheet, the adhesive strength is not sufficient, so the attached release agent is not present. After the mold was cleaned and removed, the adhesive was applied or the skin material was adhered with an adhesive sheet, but the adhesive strength varied, resulting in poorly bonded products.
The latter method can cope with the case where the vehicle seat has a simple shape, but has a drawback that the shape cannot be faithfully reproduced if the vehicle seat has a complicated shape or a fine shape. Therefore, there has been a demand for a manufacturing method corresponding to the case of having a complicated shape or the case of having a fine shape.

また、自動車座席の場合、前席／後席、さらには１列席／２列席／３列席などに区別されているため、管理する部品数もおのずと多くなり管理も煩雑である。さらに、その種別の多さから、座席を接着製造する工程において、接着条件管理などの面でも多大な負担になっている。特に、接着力性能に最も関係する接着条件・接着剤性状・組み合わせ作業精度などは座席としての商品性能にも絡み、極めて重要な管理ポイントとされている。したがって、その工程内バラツキを許容させるために各素材のスペックもおのずと過剰な素材スペックにもなってきており、製造コストアップの一因にもなっていた。
特開昭５４−５５０８６号公報 In the case of a car seat, the front seat / rear seat, and the first row seat / 2 row seat / 3 row seat, etc. are distinguished, so that the number of components to be managed is increased and the management is complicated. Furthermore, due to the large number of types, in the process of manufacturing the seat by bonding, a great burden is imposed in terms of bonding condition management. In particular, the bonding conditions, adhesive properties, combined work accuracy, etc. that are most relevant to the adhesive performance are also related to the product performance as a seat, and are regarded as extremely important management points. Therefore, in order to allow variation in the process, the specifications of each material have naturally become excessive material specifications, which has been a factor in increasing the manufacturing cost.
JP 54-55086 A

本発明が解決しようとする問題点は、離型剤がシートパッド表面に付着していることによって引き起こされる接着強度のバラツキによる座席シートの不良を低減し、複雑な形状や細かな形状にも対応する車両用シートパッド製品およびその製造方法を提供することにある。さらには座席製造工程における管理を簡略化し、製造コスト削減にも寄与することである。   The problem to be solved by the present invention is to reduce the seat seat failure due to the adhesive strength variation caused by the release agent adhering to the seat pad surface, and to cope with complex and fine shapes An object of the present invention is to provide a vehicle seat pad product and a manufacturing method thereof. Furthermore, the management in the seat manufacturing process is simplified, and the manufacturing cost is reduced.

本発明の車両用シートパッド製品は、シートパッドにウレタンフィルムが接着され、さらにウレタンフィルムにクモの巣状ホットメルトシートが接着されていることを特徴とする。
また、本発明の車両用シートパッド製品の製造方法は、ウレタンフィルムにクモの巣状ホットメルトシートを接着した接着シートを、クモの巣状ホットメルトシート側を金型側にして吸引固定する。次に、接着シートのウレタンフィルム側にウレタン樹脂を注入して発泡させ、接着シートと接着させると共に成型させることを特徴とする。 The vehicle seat pad product of the present invention is characterized in that a urethane film is bonded to the seat pad, and a cobweb-like hot melt sheet is bonded to the urethane film.
Also, in the method for manufacturing a vehicle seat pad product of the present invention, an adhesive sheet obtained by bonding a cobweb-shaped hot melt sheet to a urethane film is suction-fixed with the cobweb-shaped hot melt sheet side as a mold side. Next, a urethane resin is injected and foamed on the urethane film side of the adhesive sheet, and is bonded to the adhesive sheet and molded.

本発明の車両用シートパッド製品は、ウレタンフィルムとクモの巣状ホットメルトシートとよりなる接着シートを金型に吸引固定し、次いでウレタンフィルム上にウレタン樹脂を供給し、発泡成形する製造方法にて得られる。それゆえ、表皮材と本発明の車両用シートパッド製品とを接着する接着面には、離型剤が付着していないので、表皮材とシートパッドとを接着する際に、離型剤の影響を受けることがなく、離型剤による接着不良が生じることがない。
また、本発明の車両用シートパッド製品の製造方法によれば、複雑な形状や細やかな形状にも対応することが可能となる。
さらに、シートパッド製品には、接着剤が一体化されているので、表皮材を接着する工程においては、接着剤の在庫管理や、塗布量の管理が軽減することが可能となる。さらには、接着剤の噴霧塗布をしないので、作業環境の改善も図られることとなる。 The vehicle seat pad product of the present invention is obtained by a manufacturing method in which an adhesive sheet composed of a urethane film and a cobweb-like hot melt sheet is sucked and fixed to a mold, and then urethane resin is supplied onto the urethane film, followed by foam molding. It is done. Therefore, since the release agent is not attached to the bonding surface for bonding the skin material and the vehicle seat pad product of the present invention, the influence of the release agent when the skin material and the seat pad are bonded. No adhesion is caused by the release agent.
Moreover, according to the manufacturing method of the vehicle seat pad product of this invention, it becomes possible to respond | correspond to a complicated shape and a delicate shape.
Further, since the adhesive is integrated into the seat pad product, it is possible to reduce the inventory management of the adhesive and the management of the application amount in the process of adhering the skin material. Furthermore, since the adhesive is not sprayed, the working environment can be improved.

図１は、本発明の車両用シートパッド製品の部分断面説明図である。
本発明の車両用シートパッド製品１は、シートパッド２、ウレタンフィルム３、クモの巣状ホットメルトシート４を接着して一体化した構造となっている。
クモの巣状ホットメルトシート４は、融点が９０〜１３０℃程度である熱可塑性樹脂を溶融してノズルから吐出して糸条となし、糸条が融着してシート状になっているものである。このクモの巣状ホットメルトシート４は、表皮材とシートパッド製品１とを接着するために設けられている。このクモの巣状ホットメルトシート４に用いられる熱可塑性樹脂は、ポリアミド、ポリエステルなどであり、スチーム活性を有することが好ましい。 FIG. 1 is a partial cross-sectional explanatory view of a vehicle seat pad product of the present invention.
The vehicle seat pad product 1 of the present invention has a structure in which a seat pad 2, a urethane film 3, and a cobweb-like hot melt sheet 4 are bonded and integrated.
The cobweb-shaped hot melt sheet 4 is a sheet in which a thermoplastic resin having a melting point of about 90 to 130 ° C. is melted and discharged from a nozzle to form a yarn, and the yarn is fused. . The cobweb-like hot melt sheet 4 is provided for bonding the skin material and the seat pad product 1. The thermoplastic resin used for the web-like hot melt sheet 4 is polyamide, polyester, or the like, and preferably has steam activity.

ウレタンフィルム３は、ウレタン樹脂を発泡させたときにウレタン樹脂が金型側に抜け出すことを防止する働きをする。ウレタンフォームを金型内にて発泡させる際に、クモの巣状ホットメルトシートのみでは、ウレタンフォームがクモの巣状ホットメルトシートを透過して金型に接着することになる。これを防止する為にクモの巣状ホットメルトシートとウレタンフォームとの間にウレタンフィルムを配置している。さらに、表皮材と本発明の車両用シートパッド製品１とは、加熱して接着されるため、耐熱性のあるウレタンフィルムが用いられる。ウレタンフィルム３の溶融温度としては、１８０℃以上あればよい。
ウレタンフィルム３とクモの巣状ホットメルトシート４とは、接着剤で接着されている。
シートパッド２に用いられる樹脂は、特に限定されることはなく、求められる性状品質により選定される。 The urethane film 3 functions to prevent the urethane resin from coming out to the mold side when the urethane resin is foamed. When foaming the urethane foam in the mold, the urethane foam permeates through the cobweb-shaped hot melt sheet only and adheres to the mold. In order to prevent this, a urethane film is disposed between the web-like hot melt sheet and the urethane foam. Furthermore, since the skin material and the vehicle seat pad product 1 of the present invention are heated and bonded, a heat-resistant urethane film is used. The melting temperature of the urethane film 3 may be 180 ° C. or higher.
The urethane film 3 and the web-like hot melt sheet 4 are bonded with an adhesive.
The resin used for the seat pad 2 is not particularly limited, and is selected according to the required property quality.

以下、本発明の実施例を図面を参照しながら具体的に説明する。
本発明の車両用シートパッド製品の製造方法は、以下の工程で実現される。
予め、ウレタンフィルム３にクモの巣状ホットメルトシート４を接着して、接着シート６を作成する。このときウレタンフィルム３には、溶融温度１９０℃、厚さ４５ミクロンのものを、クモの巣状ホットメルトシートには、ポリアミド樹脂製で融点１１０℃、目付け３０ｇ／ｍ２のものを使用した。 Embodiments of the present invention will be specifically described below with reference to the drawings.
The manufacturing method of the vehicle seat pad product of the present invention is realized by the following steps.
A cobweb-shaped hot melt sheet 4 is bonded to the urethane film 3 in advance to form an adhesive sheet 6. At this time, a urethane film 3 having a melting temperature of 190 ° C. and a thickness of 45 μm was used, and a cobweb-shaped hot melt sheet made of polyamide resin having a melting point of 110 ° C. and a basis weight of 30 g / m 2 was used.

次に、この接着シート６のクモの巣状ホットメルトシート側４を下側金型５側にして、下側金型５に被せる。下側金型５には、接着シート６を吸引して金型の内側に沿わせるための吸引孔７が設けられている（図２参照）。
次に、下側金型５に開いた吸引孔７より吸引して接着シート６を下側金型５に密着させる（図３参照）。
続いて、ウレタンフィルム３側にウレタン樹脂８を注入する（図４参照）。
次に、上側金型９を被せて、金型を加熱すると、ウレタン樹脂８は発泡してウレタンフィルム３に接着して接着フィルム６と一体化するとともに成型して車両用シートパッド製品１が得られた（図５参照）。 Next, the cobweb-shaped hot melt sheet side 4 of the adhesive sheet 6 is placed on the lower mold 5 side, and the lower mold 5 is covered. The lower mold 5 is provided with a suction hole 7 for sucking the adhesive sheet 6 along the inside of the mold (see FIG. 2).
Next, the adhesive sheet 6 is brought into close contact with the lower mold 5 by suction from the suction holes 7 opened in the lower mold 5 (see FIG. 3).
Subsequently, urethane resin 8 is injected into the urethane film 3 side (see FIG. 4).
Next, when the upper mold 9 is put on and the mold is heated, the urethane resin 8 foams and adheres to the urethane film 3 so as to be integrated with the adhesive film 6 and molded to obtain the vehicle seat pad product 1. (See FIG. 5).

上記した製造方法で得られた車両用シートパッド製品に、表皮材を接着して接着強度を評価したところ、表皮材と車両用シートパッド製品は、強固に接着しており、接着強度は、充分に規格を満たすものであった。   When the skin material was bonded to the vehicle seat pad product obtained by the above manufacturing method and the adhesive strength was evaluated, the skin material and the vehicle seat pad product were firmly bonded, and the adhesive strength was sufficient. Meets the standards.

本発明の車両用シートパッド製品の部分断面説明図である。It is a fragmentary sectional view of the vehicle seat pad product of the present invention. 金型に接着シートをセットする工程の説明図である。It is explanatory drawing of the process of setting an adhesive sheet to a metal mold | die. 真空吸引して接着シートを金型に密着する工程の説明図である。It is explanatory drawing of the process of vacuum-sucking and sticking an adhesive sheet to a metal mold | die. 接着シートにウレタン樹脂を注入する工程の説明図である。It is explanatory drawing of the process of inject | pouring urethane resin to an adhesive sheet. ウレタン樹脂を発泡する工程の説明図である。It is explanatory drawing of the process of foaming a urethane resin.

符号の説明Explanation of symbols

１ 車両用シートパッド製品
２ シートパッド
３ ウレタンフィルム
４ クモの巣状ホットメルトシート
５ 下側金型
６ 接着シート
７ 吸引孔
８ ウレタン樹脂
９ 上側金型
DESCRIPTION OF SYMBOLS 1 Vehicle seat pad product 2 Seat pad 3 Urethane film 4 Cobweb-like hot melt sheet 5 Lower mold 6 Adhesive sheet 7 Suction hole 8 Urethane resin 9 Upper mold

Claims (2)

シートパッド、ウレタンフィルム、クモの巣状ホットメルトシートが順次積層接着されていることを特徴とする車両用シートパッド製品。   A vehicle seat pad product, in which a seat pad, a urethane film, and a cobweb-like hot melt sheet are sequentially laminated and bonded. ウレタンフィルムにクモの巣状ホットメルトシートを接着した接着シートをクモの巣状ホットメルトシート側を金型側にして吸引固定し、次に接着シートのウレタンフィルム上にウレタン樹脂を注入し、ウレタン樹脂を発泡させ、ウレタン樹脂と接着シートとを接着させると共に成型させることを特徴とする車両用シートパッド製品の製造方法。
Adhesive sheet with cobweb-shaped hot melt sheet bonded to urethane film is suction fixed with cobweb-shaped hot melt sheet side as mold side, and then urethane resin is injected onto urethane film of adhesive sheet to foam urethane resin A method of manufacturing a vehicle seat pad product, characterized in that a urethane resin and an adhesive sheet are bonded and molded.
JP2004272203A 2004-09-17 2004-09-17 Vehicle seat pad product and manufacturing method thereof Expired - Fee Related JP4599961B2 (en)

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Cited By (4)

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FR2935290A1 (en) * 2008-09-04 2010-03-05 Faurecia Sieges Automobile Seat cushion forming method for motor vehicle, involves demolding polyurethane padding formed by foam layer and complex, withdrawing protector film, and fixing covering on padding by using heat seal material layer
FR3070622A1 (en) * 2017-09-01 2019-03-08 Faurecia Automotive Industrie METHOD FOR MANUFACTURING AT LEAST ONE VEHICLE AUTOMOTIVE EQUIPMENT STRUCTURE
CN110670370A (en) * 2019-11-06 2020-01-10 山东同大海岛新材料股份有限公司 Preparation method of imitated leather microfiber leather, imitated leather microfiber leather and imitated leather product
JP2020531322A (en) * 2017-08-24 2020-11-05 ビーエーエスエフ コーティングス ゲゼルシャフト ミット ベシュレンクテル ハフツングＢＡＳＦ Ｃｏａｔｉｎｇｓ ＧｍｂＨ Manufacture of composites made of films, solid adhesive polymers and polyurethane layers

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JP2003201658A (en) * 2001-12-27 2003-07-18 Kasai Kogyo Co Ltd Acoustic material

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Publication number Priority date Publication date Assignee Title
JPS63179711A (en) * 1987-01-21 1988-07-23 Nhk Spring Co Ltd Manufacture of sheet
JPH09313761A (en) * 1996-05-31 1997-12-09 Itoki Crebio Corp Structure and manufacture of skin-integrated cushion for chair
JP2003201658A (en) * 2001-12-27 2003-07-18 Kasai Kogyo Co Ltd Acoustic material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2935290A1 (en) * 2008-09-04 2010-03-05 Faurecia Sieges Automobile Seat cushion forming method for motor vehicle, involves demolding polyurethane padding formed by foam layer and complex, withdrawing protector film, and fixing covering on padding by using heat seal material layer
JP2020531322A (en) * 2017-08-24 2020-11-05 ビーエーエスエフ コーティングス ゲゼルシャフト ミット ベシュレンクテル ハフツングＢＡＳＦ Ｃｏａｔｉｎｇｓ ＧｍｂＨ Manufacture of composites made of films, solid adhesive polymers and polyurethane layers
JP7325401B2 (en) 2017-08-24 2023-08-14 ビーエーエスエフ コーティングス ゲゼルシャフト ミット ベシュレンクテル ハフツング Manufacture of composite materials made of films, solid adhesive polymers and polyurethane layers
US11850835B2 (en) 2017-08-24 2023-12-26 Basf Coatings Gmbh Production of composite materials made of film, solid adhesive polymer, and a polyurethane layer
FR3070622A1 (en) * 2017-09-01 2019-03-08 Faurecia Automotive Industrie METHOD FOR MANUFACTURING AT LEAST ONE VEHICLE AUTOMOTIVE EQUIPMENT STRUCTURE
CN110670370A (en) * 2019-11-06 2020-01-10 山东同大海岛新材料股份有限公司 Preparation method of imitated leather microfiber leather, imitated leather microfiber leather and imitated leather product

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