JP6660948B2 - Manufacturing method of skin-integrated foam molded product - Google Patents

Manufacturing method of skin-integrated foam molded product Download PDF

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JP6660948B2
JP6660948B2 JP2017521817A JP2017521817A JP6660948B2 JP 6660948 B2 JP6660948 B2 JP 6660948B2 JP 2017521817 A JP2017521817 A JP 2017521817A JP 2017521817 A JP2017521817 A JP 2017521817A JP 6660948 B2 JP6660948 B2 JP 6660948B2
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skin
foam molded
stock solution
inner bag
integrated foam
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JPWO2016194664A1 (en
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毅 田畑
毅 田畑
佳昭 片山
佳昭 片山
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Tachi S 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/24—Feeding the material into the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B68—SADDLERY; UPHOLSTERY
    • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
    • B68G7/00—Making upholstery
    • B68G7/06—Filling of cushions, mattresses, or the like

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Seats For Vehicles (AREA)
  • Molding Of Porous Articles (AREA)

Description

本発明は、表皮一体発泡成形品の製造方法に関する。   The present invention relates to a method for producing a skin-integrated foam molded article.

例えば車両用シートのヘッドレストは、成形型内にセットした表皮内部に発泡樹脂原液を注入し、表皮内部にて発泡樹脂原液を反応させ、発泡樹脂からなる芯体を表皮と一体に成形して製造されている。表皮としては、ファブリック等の表面材と、ウレタンスラブ等のワディングと、ウレタンフィルム等のフィルムとが積層されてなる三層構造の表皮が広く用いられているが、フィルムを省略した二層構造の表皮も用いられている。   For example, a headrest for a vehicle seat is manufactured by injecting a foamed resin stock solution into the inside of the skin set in the mold, reacting the foamed resin stock solution inside the skin, and integrally molding the core made of foamed resin with the skin. Have been. As a skin, a three-layered skin in which a surface material such as a fabric, a wading such as a urethane slab, and a film such as a urethane film are laminated is widely used, but a two-layered structure in which a film is omitted is used. The epidermis is also used.

表皮の内面を形成するウレタンフィルム等のフィルムは、発泡樹脂原液がワディングや表面材に浸透することを阻止するものであり、フィルムが省略された二層構造（表面材及びワディング）の表皮を用いた表皮一体発泡成形品の製造では、ノズルから吐出される発泡樹脂原液を受け止める分散体を表皮内部に設け、分散体によって発泡樹脂原液の流れを弱め、表面材及びワディングに対する発泡樹脂原液の浸透を抑制している（特許文献１〜３参照）。   The urethane film or other film that forms the inner surface of the skin prevents the foamed resin stock solution from penetrating into the wadding or surface material, and uses a two-layer structure (surface material and wadding) without the film. In the manufacture of foam-integrated foam molded products, a dispersion for receiving the foamed resin stock solution discharged from the nozzle is provided inside the skin, the flow of the foamed resin stock solution is weakened by the dispersion, and the penetration of the foamed resin stock solution into the surface material and wadding is reduced. (See Patent Documents 1 to 3).

日本国特開平１１−３１３７２８号公報Japanese Patent Application Laid-Open No. 11-313728 日本国特開平８−１６４０３４号公報Japanese Patent Application Laid-Open No. 8-164,034 日本国特開平６−３１２４２５号公報Japanese Patent Laid-Open No. Hei 6-321425

表皮を表面材のみの一層構造として簡素化することにより、表皮一体発泡成形品の製造コストを削減することができる。しかし、ファブリック等の液浸透性を有する生地からなる表面材に対し、特許文献１〜３に記載された製造方法における分散体の使用によっても発泡樹脂原液の浸透が懸念され、浸透した発泡樹脂原液が固化することにより、表皮の風合いが損なわれる虞がある。   By simplifying the skin as a single layer structure of only the surface material, it is possible to reduce the manufacturing cost of the skin-integrated foam molded product. However, with respect to the surface material made of a liquid-permeable fabric such as a fabric, the use of the dispersion in the production method described in Patent Documents 1 to 3 is also concerned about the penetration of the foamed resin stock solution, By solidification, the texture of the skin may be impaired.

表皮が表面材及びワディングの二層構造である場合の発泡樹脂原液の吐出圧力は通常１２ＭＰａ〜１８ＭＰａであるところ、発泡樹脂原液の吐出圧力を低くし、注入された発泡樹脂原液の流れを弱めることにより、表面材のみの一層構造である表皮に対する発泡樹脂原液の浸透を抑制可能である。   When the discharge pressure of the foamed resin stock solution is usually 12 MPa to 18 MPa when the skin has a two-layer structure of the surface material and wadding, the discharge pressure of the foamed resin stock solution is reduced, and the flow of the injected foamed resin stock solution is reduced. Accordingly, it is possible to suppress the penetration of the foamed resin stock solution into the skin having a single-layer structure composed only of the surface material.

しかし、例えば二液性発泡樹脂などであって複数の原液を表皮内部で混合させて反応させる場合に、吐出圧力を低くすることに起因して、複数の原液の混合が不足して反応が進まず、芯体のボリュームが不足する虞があった。   However, when a plurality of undiluted solutions such as a two-component foamed resin are mixed and reacted inside the epidermis, the reaction proceeds due to insufficient mixing of the plurality of undiluted solutions due to a low discharge pressure. First, the volume of the core body may be insufficient.

本発明は、上述した事情に鑑みなされたものであり、表面材のみの一層構造のような比較的薄い表皮であっても発泡樹脂原液の浸透を抑制でき、発泡樹脂の安定した成形が可能な表皮一体発泡成形品の製造方法を提供することを目的とする。   The present invention has been made in view of the above-described circumstances, and can suppress the penetration of the foamed resin stock solution even in a relatively thin skin such as a single-layer structure of only the surface material, and can stably mold the foamed resin. An object of the present invention is to provide a method for producing a skin-integrated foam molded article.

本発明の一態様の表皮一体発泡成形品の製造方法は、発泡樹脂の複数の原液を袋状の表皮内部に注入し、発泡樹脂からなる芯体を表皮と一体に成形してなる表皮一体発泡成形品の製造方法であって、前記表皮は、前記表皮と一体に前記表皮内部へのノズル挿し込み口に設けられたメッシュ材からなる内袋を有するものであり、前記複数の原液を前記表皮内部に注入するノズルの吐出口を前記内袋に挿し込み、前記複数の原液を前記内袋に溜め、前記内袋から前記表皮内部に流出させる。   A method for producing a skin-integrated foamed molded product according to one embodiment of the present invention is a method for forming a skin-integrated foam by injecting a plurality of stock solutions of a foamed resin into a bag-shaped skin and integrally molding a core body made of the foamed resin with the skin. A method for manufacturing a molded article, wherein the skin has an inner bag made of a mesh material provided at a nozzle insertion port into the skin integrally with the skin, and the plurality of undiluted solutions are coated with the skin. A discharge port of a nozzle to be injected into the inside is inserted into the inner bag, and the plurality of undiluted solutions is stored in the inner bag, and is discharged from the inner bag into the inside of the epidermis.

本発明によれば、比較的薄い表皮であっても発泡樹脂原液の浸透を抑制でき、発泡樹脂の安定した成形が可能である。   ADVANTAGE OF THE INVENTION According to this invention, even if it is a comparatively thin skin, the penetration of a foaming resin stock solution can be suppressed and the foaming resin can be stably molded.

本発明の実施形態を説明するための、表皮一体発泡成形品の一例を示す斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view illustrating an example of a skin-integrated foam molded product for describing an embodiment of the present invention. 図１の表皮一体発泡成形品の断面図である。It is sectional drawing of the skin integral foam molding of FIG. 図１の表皮一体発泡成形品の製造方法を示す図である。It is a figure which shows the manufacturing method of the skin integral foam molded article of FIG. 図１の表皮一体発泡成形品の製造方法の図３に続く工程を示す図である。1. It is a figure which shows the process following FIG. 3 of the manufacturing method of the skin integral foaming molded article of FIG. 図１の表皮一体発泡成形品の製造方法の図４に続く工程を示す図である。1. It is a figure which shows the process of following the manufacturing method of the skin integral foaming molded article of FIG. 1 following FIG. ノズルに連結される発泡樹脂注入器の模式図である。It is a schematic diagram of a foamed resin injector connected to a nozzle. ノズルの吐出口が挿し込まれる表皮内部の内袋の断面図である。It is sectional drawing of the inner bag inside an epidermis in which the discharge opening of a nozzle is inserted. 図７の内袋から表皮内部に流出する際の発泡樹脂の複数の原液の状態を示す模式図である。FIG. 8 is a schematic diagram showing a state of a plurality of stock solutions of foamed resin when flowing out of the inner bag of FIG. 7 into the inside of the epidermis.

図１は、本発明の実施形態を説明するための、表皮一体発泡成形品の一例を示し、図２は、図１の表皮一体発泡成形品の断面を示す。   FIG. 1 shows an example of a skin-integrated foam molded article for describing an embodiment of the present invention, and FIG. 2 shows a cross section of the skin-integrated foam molded article of FIG.

図１に示す表皮一体発泡成形品は車両用シートのヘッドレスト１０であり、ヘッドレスト１０は、ヘッドレストカバーを構成する表皮１１と、表皮１１の内部に充填された芯体１２と、芯体１２の内部に埋め込まれ、一対の脚部が表皮１１の外部に露出した金属製のフレーム１３と、を備える。   1 is a headrest 10 of a vehicle seat. The headrest 10 includes a skin 11 constituting a headrest cover, a core 12 filled in the interior of the skin 11, and an interior of the core 12. And a metal frame 13 having a pair of legs exposed to the outside of the skin 11.

表皮１１は、ファブリック等の液浸透性を有する生地からなる表面材の一層構造であって、袋状に縫製されており、縫い代が内側になるように返し口１１ａで裏返され、返し口１１ａが綴じ縫いされて構成されている。芯体１２は、発泡ポリウレタン等の比較的軟質な発泡樹脂からなり、表皮１１の内部で発泡されて表皮１１と一体に成形されている。   The outer skin 11 is a one-layer structure of a surface material made of a liquid-permeable fabric such as a fabric, is sewn in a bag shape, and is turned over at a return opening 11a so that a seam allowance is on the inside. It is configured to be stitched. The core 12 is made of a relatively soft foamed resin such as foamed polyurethane, and is foamed inside the skin 11 to be formed integrally with the skin 11.

図３から図５はヘッドレスト１０の製造方法の一例を示す。   3 to 5 show an example of a method for manufacturing the headrest 10. FIG.

まず、図３に示すように、袋状の表皮１１の通孔１１ｂにフレーム１３の脚部を挿通して表皮１１にフレーム１３を装着し、また、表皮１１のノズル挿し込み口１１ｃに発泡樹脂の原液の注入ノズル２０を装着する。   First, as shown in FIG. 3, the frame 13 is attached to the skin 11 by inserting the legs of the frame 13 into the through holes 11b of the bag-shaped skin 11, and the foam resin is inserted into the nozzle insertion port 11c of the skin 11. Is attached.

次に、図４に示すように、フレーム１３及び注入ノズル２０が装着された表皮１１を、上型２１ａ及び下型２１ｂからなる一体発泡成形用金型２１のキャビティに装填する。   Next, as shown in FIG. 4, the skin 11 on which the frame 13 and the injection nozzle 20 are mounted is loaded into the cavity of the integral foam molding die 21 composed of the upper die 21a and the lower die 21b.

そして、図５に示すように、発泡樹脂の原液を供給する注入器２２のヘッド部を注入ノズル２０に接続し、注入ノズル２０を通じて発泡樹脂の原液を表皮１１の内部に注入し、表皮１１の内部で発泡樹脂の原液を発泡させて芯体１２を成形する。   Then, as shown in FIG. 5, the head of the injector 22 that supplies the undiluted foam resin is connected to the injection nozzle 20, and the undiluted foam resin is injected into the interior of the skin 11 through the injection nozzle 20. The core 12 is formed by foaming the stock solution of the foamed resin inside.

芯体１２の成形が済んだ後、表皮１１及び芯体１２並びにフレーム１３を一体発泡成形用金型２１から脱型し、注入ノズル２０をノズル挿し込み口１１ｃから取り外して、ヘッドレスト１０を得る。   After the molding of the core body 12, the skin 11, the core body 12, and the frame 13 are removed from the integral foam molding die 21, and the injection nozzle 20 is removed from the nozzle insertion port 11c to obtain the headrest 10.

図６は、注入器２２の一例の構成を示す。なお、図６に示す例では、芯体１２を形成する発泡樹脂として発泡ポリウレタンを用いるものとして説明する。   FIG. 6 shows an example of the configuration of the injector 22. In the example shown in FIG. 6, a description will be given assuming that foamed polyurethane is used as the foamed resin forming the core 12.

発泡ポリウレタンは、典型的には、ポリオールを主成分とする主剤原液とポリイソシアネートを主成分とする硬化剤原液とを混合して発泡させてなり、注入器２２は、主剤原液を貯留した主剤原液タンク２４ａと、硬化剤原液を貯留した硬化剤原液タンク２４ｂとを備える。   Foamed polyurethane is typically formed by mixing a base stock solution containing a polyol as a main component and a stock solution of a hardener containing a polyisocyanate as a main component and foaming it. A tank 24a and a hardener stock tank 24b storing a hardener stock are provided.

主剤原液タンク２４ａに貯留された主剤原液は、配管２３ａ及びポンプ２５ａを経て注入器２２のヘッド部に供給され、硬化剤原液タンク２４ｂに貯留された硬化剤原液は、配管２３ｂ及びポンプ２５ｂを経て注入器２２のヘッド部に供給され、主剤原液及び硬化剤原液は、注入器２２のヘッド部に接続された注入ノズル２０の吐出口から所定の配合比及び所定の吐出圧力で吐出され、袋状の表皮１１の内部に注入される。   The stock solution stored in the stock solution tank 24a is supplied to the head of the injector 22 via the pipe 23a and the pump 25a, and the stock solution stored in the stock solution tank 24b is fed via the pipe 23b and the pump 25b. The main agent stock solution and the curing agent stock solution are supplied to the head portion of the injector 22, and are discharged at a predetermined compounding ratio and a predetermined discharge pressure from the discharge port of the injection nozzle 20 connected to the head portion of the injector 22 to form a bag. Is injected into the inside of the epidermis 11.

表皮１１の内部において、主剤原液に含まれるポリオールと硬化剤原液に含まれるポリイソシアネートとのウレタン化反応が進行し、また、主剤原液に含まれる水分とポリイソシアネートとが反応して二酸化炭素ガスが発生し、発泡ポリウレタンからなる芯体１２が成形される。   Inside the epidermis 11, the urethane-forming reaction between the polyol contained in the base stock solution and the polyisocyanate contained in the curing agent stock solution proceeds, and the water contained in the stock solution and the polyisocyanate react to generate carbon dioxide gas. Then, the core body 12 made of foamed polyurethane is formed.

図７は、ノズルの吐出口が挿し込まれる表皮内部の内袋の断面を示し、図８は、図７の内袋から表皮内部に流出する際の発泡樹脂の複数の原液の状態を示す。   FIG. 7 shows a cross section of the inner bag inside the epidermis into which the discharge port of the nozzle is inserted, and FIG. 8 shows a state of a plurality of stock solutions of the foamed resin when flowing out of the inner bag of FIG.

本例のヘッドレスト１０において、表皮１１は、ファブリック等の液浸透性を有する生地の一層構造であり、表皮１１への主剤原液及び硬化剤原液の浸透を抑制する目的で、注入ノズル２０からの原液の吐出圧力が低く設定される。   In the headrest 10 of the present example, the skin 11 is a single-layer structure of a liquid-permeable fabric such as a fabric, and the stock solution from the injection nozzle 20 is used for the purpose of suppressing the penetration of the base stock solution and the curing agent stock solution into the skin 11. Is set low.

上記のとおり、表皮が表面材及びワディングの二層構造である場合の原液の吐出圧力が通常１２ＭＰａ〜１８ＭＰａであるのに対し、表皮１１が液浸透性を有する生地の一層構造である本例では、原液の吐出圧力を例えば８ＭＰａ〜１０ＭＰａとする。   As described above, the discharge pressure of the undiluted solution when the skin has a two-layer structure of the surface material and wadding is usually 12 MPa to 18 MPa, whereas in this example, the skin 11 is a single-layer structure of liquid-permeable fabric. The discharge pressure of the stock solution is, for example, 8 MPa to 10 MPa.

そして、吐出圧力の低下に起因する主剤原液及び硬化剤原液の混合不足を補填する目的で、表皮１１のノズル挿し込み口１１ｃに内袋１４が設けられている。   The inner bag 14 is provided at the nozzle insertion port 11c of the skin 11 for the purpose of compensating for the insufficient mixing of the base stock solution and the hardener stock solution caused by the decrease in the discharge pressure.

内袋１４は、例えばスラブウレタン等からなるメッシュ材を袋状に縫製したものであり、内袋１４の開口縁部が表皮１１のノズル挿し込み口１１ｃに縫製又は接着されて表皮１１と一体化されている。注入ノズル２０の先端の突出口が内袋１４の底との間に隙間をあけた状態に、注入ノズル２０は表皮１１のノズル挿し込み口１１ｃに挿し込まれる。   The inner bag 14 is formed by sewing a mesh material made of, for example, slab urethane into a bag shape. Have been. The injection nozzle 20 is inserted into the nozzle insertion port 11 c of the skin 11 with a gap between the protrusion at the tip of the injection nozzle 20 and the bottom of the inner bag 14.

注入ノズル２０から吐出される主剤原液及び硬化剤原液は、内袋１４に一旦溜められ、内袋１４の網目を通して内袋１４から表皮１１の内部に流出し、内袋１４に一旦溜められた際に内袋１４の内部で撹拌される。これにより、主剤原液及び硬化剤原液の混合が促進され、主剤原液及び硬化剤原液の吐出圧力を低下させても発泡反応が促進され、芯体１２を安定に成形することが可能となる。そして、主剤原液及び硬化剤原液の吐出圧力を低下させることにより、表皮１１への主剤原液及び硬化剤原液の浸透を抑制でき、表皮１１の風合いが損なわれることを抑制することができる。   When the stock solution of the main agent and the stock solution of the curing agent discharged from the injection nozzle 20 are temporarily stored in the inner bag 14, flow out of the inner bag 14 through the mesh of the inner bag 14 to the inside of the skin 11, and are once stored in the inner bag 14. Is stirred inside the inner bag 14. This promotes mixing of the base stock solution and the hardener stock solution, promotes the foaming reaction even when the discharge pressure of the base stock solution and the hardener stock solution is reduced, and enables the core body 12 to be stably formed. Then, by lowering the discharge pressure of the stock solution of the base material and the stock solution of the hardener, the penetration of the stock solution of the base material and the stock solution of the hardener into the skin 11 can be suppressed, and the feeling of the skin 11 can be prevented from being impaired.

さらに、内袋１４の内部に一旦溜められた主剤原液及び硬化剤原液は、内袋１４から表皮１１の内部に向けて放射状に流出し、主剤原液及び硬化剤原液の流れが注入ノズル２０からの吐出方向に集中せずに分散される。これにより、表皮１１の内部における主剤原液及び硬化剤原液の充填ムラを抑制して芯体１２を一層安定に成形することが可能となり、また、主剤原液及び硬化剤原液の流れを弱めて表皮１１への主剤原液及び硬化剤原液の浸透を一層抑制することが可能となる。   Further, the main agent stock solution and the hardener stock solution once stored in the inner bag 14 flow radially from the inner bag 14 toward the inside of the epidermis 11, and the flow of the main agent stock solution and the hardener stock solution flows from the injection nozzle 20. Dispersed without concentrating in the ejection direction. Thereby, it is possible to suppress the uneven filling of the base solution and the curing agent solution in the inside of the skin 11 and to form the core body 12 more stably, and to weaken the flow of the base solution and the curing agent solution to reduce the flow of the skin 11 It is possible to further suppress the penetration of the stock solution of the main agent and the stock solution of the curing agent into the ink.

内袋１４を形成するメッシュ材は、主剤原液及び硬化剤原液が滞ることなく通過できる程度の通気度を有していることが好ましく、主剤原液や硬化剤原液の粘度にもよるが、１００［（ｃｍ ３ ／ｃｍ ２ ）・ｓ］以上の通気度を有していることが好ましい。なお、通気度は、ＪＩＳ Ｌ １０９６に規定される通気性試験方法のフラジール形法によって測定される値とし、ＪＩＳ Ｌ １０９６の内容はここに参照として取り込まれる。 The mesh material forming the inner bag 14 preferably has air permeability such that the stock solution of the main agent and the stock solution of the curing agent can pass through without any delay . (Cm 3 / cm 2 ) · s] or more. The air permeability is a value measured by the Frazier method of the air permeability test method specified in JIS L 1096, and the contents of JIS L 1096 are incorporated herein by reference.

また、内袋１４を形成するメッシュ材の通気度が過大であると、主剤原液及び硬化剤原液を内袋１４に一旦溜めることによる撹拌効果が減弱されるので、内袋１４を形成するメッシュ材は、１０００［（ｃｍ ３ ／ｃｍ ２ ）・ｓ］以下の通気度を有していることが好ましい。 If the air permeability of the mesh material forming the inner bag 14 is excessive, the stirring effect due to the temporary storage of the base material stock solution and the hardening agent stock solution in the inner bag 14 is reduced. Preferably has an air permeability of 1000 [(cm 3 / cm 2 ) · s] or less.

以上、表皮１１が液浸透性を有する生地（表面材）の一層構造であるものとして説明したが、本発明は、表皮が表面材及びワディングの二層構造である場合にも適用可能であり、芯体１２を形成する発泡樹脂の複数の原液の混合を促進して芯体１２を安定に成形することができ、表皮への原液の浸透を抑制して表皮の風合いが損なわれることを抑制することができる。   Although the above description has been made assuming that the skin 11 has a single-layer structure of a liquid-permeable fabric (surface material), the present invention is also applicable to a case where the skin has a two-layer structure of a surface material and wading, The mixing of a plurality of stock solutions of the foamed resin forming the core body 12 can be promoted to stably mold the core body 12, the penetration of the stock solution into the skin can be suppressed, and the texture of the skin can be prevented from being impaired. be able to.

ヘッドレスト１０を例に説明したが、本発明は、例えばアームレストやシートトレイなど他の表皮一体発泡成形品にも適用可能である。   Although the headrest 10 has been described as an example, the present invention is also applicable to other skin-integrated foam molded products such as an armrest and a sheet tray.

本出願は、２０１５年５月２９日出願の日本特許出願（特願２０１５−１０９８１２）に基づくものであり、その内容はここに参照として取り込まれる。   This application is based on Japanese Patent Application (No. 2015-109812) filed on May 29, 2015, the contents of which are incorporated herein by reference.

１０ ヘッドレスト
１１ 表皮
１２ 芯体
１３ フレーム
１４ 内袋
２０ 注入ノズル
２１ 一体発泡成形用金型
２２ 注入器
２４ａ 主剤原液タンク
２４ｂ 硬化剤原液タンクDESCRIPTION OF SYMBOLS 10 Headrest 11 Skin 12 Core 13 Frame 14 Inner bag 20 Injection nozzle 21 Integral foaming mold 22 Injector 24a Base stock tank 24b Hardener stock tank

Claims (4)

発泡樹脂の複数の原液を袋状の表皮内部に注入し、発泡樹脂からなる芯体を表皮と一体に成形してなる表皮一体発泡成形品の製造方法であって、
前記表皮は、前記表皮と一体に前記表皮内部へのノズル挿し込み口に設けられたメッシュ材からなる内袋を有するものであり、
前記複数の原液を前記表皮内部に注入するノズルの吐出口を前記内袋に挿し込み、前記複数の原液を前記内袋に溜め、前記内袋から前記表皮内部に流出させる表皮一体発泡成形品の製造方法。 A method for producing a skin-integrated foam molded product obtained by injecting a plurality of stock solutions of a foamed resin into a bag-shaped skin, and integrally molding a core body made of the foamed resin with the skin,
The skin has an inner bag made of a mesh material provided at a nozzle insertion port into the skin integrally with the skin,
Inserting a discharge port of a nozzle for injecting the plurality of undiluted solutions into the inside of the epidermis into the inner bag, storing the plurality of undiluted solutions in the inner bag, and allowing the undiluted solution to flow out of the inner bag into the epidermis; Production method. 請求項１記載の表皮一体発泡成形品の製造方法であって、
前記内袋を形成するメッシュ材は、ＪＩＳ Ｌ １０９６に規定されるフラジール形法によって測定された通気度が１００［（ｃｍ ３ ／ｃｍ ２ ）・ｓ］以上１０００［（ｃｍ ３ ／ｃｍ ２ ）・ｓ］以下である表皮一体発泡成形品の製造方法。 It is a manufacturing method of the skin integral foam molded article of Claim 1, Comprising:
The mesh material forming the inner bag has an air permeability of 100 [(cm 3 / cm 2 ) · s] or more and 1000 [(cm 3 / cm 2 ) · measured by the Frazier method defined in JIS L 1096. s] The following method for producing a skin-integrated foam molded article. 請求項１又は２記載の表皮一体発泡成形品の製造方法であって、
前記複数の原液の吐出圧は、８ＭＰａ以上１０ＭＰａ以下である表皮一体発泡成形品の製造方法。 It is a manufacturing method of the skin integral foam molded article of Claim 1 or 2, Comprising:
A method for producing a skin-integrated foam molded product, wherein a discharge pressure of the plurality of stock solutions is 8 MPa or more and 10 MPa or less. 請求項１から３のいずれか一項記載の表皮一体発泡成形品の製造方法であって、
前記表皮は、液浸透性を有する生地の一層構造である表皮一体発泡成形品の製造方法。 A method for producing a skin-integrated foam molded product according to any one of claims 1 to 3,
A method for producing a skin-integrated foam molded article, wherein the skin is a one-layer structure of a liquid-permeable fabric.
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