JPH0645153B2 - Method of manufacturing polyurethane sheet pad - Google Patents
Method of manufacturing polyurethane sheet padInfo
- Publication number
- JPH0645153B2 JPH0645153B2 JP2413396A JP41339690A JPH0645153B2 JP H0645153 B2 JPH0645153 B2 JP H0645153B2 JP 2413396 A JP2413396 A JP 2413396A JP 41339690 A JP41339690 A JP 41339690A JP H0645153 B2 JPH0645153 B2 JP H0645153B2
- Authority
- JP
- Japan
- Prior art keywords
- polyurethane
- foaming
- mold
- seat
- hardness
- 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.)
- Expired - Lifetime
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は自動車等のシートに用い
られるポリウレタンシートパツドの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a polyurethane sheet pad used for automobile seats.
【０００２】[0002]
【従来の技術】一般に、自動車のシートはシートフレー
ムにばね材がセツトされ、その上部にシートパツド材が
載置され、或いは、上記シートフレーム上部に厚いシー
トパツド材が直接載置され、更に、その上面がトリムカ
バーアツセンブリによつて被覆されているものである。2. Description of the Related Art Generally, in a seat of an automobile, a spring material is set on a seat frame, and a seat pad material is placed on the seat frame, or a thick seat pad material is placed directly on the seat frame, and the upper surface of the seat pad material is placed on the seat frame. Is covered by the trim cover assembly.
【０００３】又、一般に自動車等のシートに用いられる
シートパツドは、軸フエルト、ラテツクスフオーム、ポ
リウレタンフオーム等によつて形成され、着座した乗員
にシート表面の柔らかい感触を与えると同時に、かかる
態様のシートにクツシヨン体としてのばね作用とダンピ
ング作用を持たせるものである。Further, a seat pad generally used for a seat of an automobile or the like is formed by a shaft felt, a latex foam, a polyurethane foam or the like to give a seated occupant a soft feeling of the seat surface and at the same time, the seat in such a mode. It has a spring action and a damping action as a cushion body.
【０００４】而して、近年、シートの乗員に対するホー
ルド特性が考慮され、座面に比較しサイド部を硬くした
異硬度シートパツドに対するニーズが高まつてきてい
る。この異硬度シートパツドは例えば図１に示す様に所
定形状の成形型１を載置し、該成形型１上方の設定位置
に原料注入ノズル２,２及び３をセツトし、次いで、該
原料注入ノズル２,２及び３より硬度の異なる第１ポリ
ウレタン原料４、及び第２ポリウレタン原料５を上記成
形型１内に注入し、その後、該第１ポリウレタン原料４
及び第２ポリウレタン原料５を発泡させることにより、
異硬度シートパツド６は図２に示す様な断面形状に形成
される。Thus, in recent years, there is an increasing need for a different hardness seat pad in which the side portion is harder than the seat surface in consideration of the holding characteristic of the seat for the occupant. In this different hardness sheet pad, for example, as shown in FIG. 1, a mold 1 having a predetermined shape is placed, raw material injection nozzles 2, 2 and 3 are set at a set position above the mold 1, and then the raw material injection nozzle is set. The first polyurethane raw material 4 and the second polyurethane raw material 5 having hardnesses different from 2, 2, and 3 are injected into the molding die 1, and then the first polyurethane raw material 4 is injected.
And by foaming the second polyurethane raw material 5,
The different hardness sheet pad 6 is formed in a sectional shape as shown in FIG.
【０００５】尚、上記成形型１は、第１ポリウレタン原
料４と第２ポリウレタン原料５が注入される部位の境界
部に仕切７が形成され、該第１ポリウレタン原料４と第
２ポリウレタン原料５の混入が防止されている。In the molding die 1, a partition 7 is formed at the boundary between the portions where the first polyurethane raw material 4 and the second polyurethane raw material 5 are injected, and the partition 7 is formed between the first polyurethane raw material 4 and the second polyurethane raw material 5. Contamination is prevented.
【０００６】しかしながら、上述の異硬度ポリウレタン
シートパツドの製造方法は、シートパツドの形状によつ
ては成形型に設けられた仕切が役に立たず、２種以上の
ポリウレタン原料が互いに混入し、その発泡速度及び発
泡高さの違いにより該２種以上の原料の境界面が乱れ所
望のシートパツドが得られないという欠点があつた。However, in the above-mentioned method of manufacturing the different hardness polyurethane sheet pad, the partition provided in the molding die is not useful depending on the shape of the sheet pad, and two or more kinds of polyurethane raw materials are mixed with each other, resulting in a foaming speed. Also, there is a drawback in that the boundary surface between the two or more raw materials is disturbed due to the difference in foaming height, and a desired sheet pad cannot be obtained.
【０００７】このような欠点を解消して異硬度ポリウレ
タン原料の配置の自由度を拡大して、シートの機能性及
び審美性を高めた異硬度ポリウレタンシートパツドの製
造方法として硬度が相互に異なる複数種のポリウレタン
原料の少なくとも１種を成形型内に相互に混入すること
なくスプレー式に吹付けをして発泡させ、その後に他の
異なる種類のポリウレタン原料を上記成形型内に注入し
て発泡させる異硬度ポリウレタンシートパツドの製造方
法(特開昭61−160241号)が開発された。この方法では例
えば図３に示すような型を用いて、図４に示すような異
硬度ポリウレタンシートパツドが得られる。図４のポリ
ウレタンシートパツド６'の両側部は高硬度の第１ポリ
ウレタン原料４から成り、他の部位は低硬度の第２ポリ
ウレタン原料５から成つている。上記ポリウレタンシー
トパツド６'を製造するに際しては、まず、スプレー吹
付けにより成形型１'内の両側部に上記第１ポリウレタ
ン原料４をスプレー吹付けして発泡させ、次に上記成形
型１'内に第２ポリウレタン原料５を注入し発泡させ、
更に、該成形型１'をキユア炉で硬化させ、最後に異硬
度ポリウレタンシートパツド６'を上記成形型１'より脱
型する。As a method of manufacturing different hardness polyurethane sheet pads in which the above-mentioned drawbacks are eliminated and the degree of freedom in arranging raw materials of different hardness polyurethane is increased to enhance the functionality and aesthetics of the sheet, the hardness is different from each other. At least one of plural kinds of polyurethane raw materials is sprayed and foamed without being mixed with each other in the molding die, and then another different kind of polyurethane raw material is injected into the molding die to foam. A method for producing a different hardness polyurethane sheet pad (JP-A-61-160241) has been developed. In this method, for example, a mold as shown in FIG. 3 is used to obtain a different hardness polyurethane sheet pad as shown in FIG. Both sides of the polyurethane sheet pad 6'in FIG. 4 are made of the first polyurethane raw material 4 having a high hardness, and the other portions are made of the second polyurethane raw material 5 having a low hardness. In manufacturing the polyurethane sheet pad 6 ', first, the first polyurethane raw material 4 is sprayed and foamed on both sides of the molding die 1'by spraying, and then the molding die 1'is formed. Inject the second polyurethane raw material 5 into the inside to foam,
Further, the molding die 1'is cured in a curing furnace, and finally the different hardness polyurethane sheet pad 6'is released from the molding die 1 '.
【０００８】しかしながら、このようなポリウレタンシ
ートパツドにおいてはサイド部全てが高硬度となるため
着座においてソフト感がないため着座フイーリングを損
なうという問題点がある。更に、サイド部全て高硬度の
ため表皮材をアツセンブリする時、表皮材との馴染みが
悪くシワ等を発生して仕上がり品質が悪くなるという欠
点がある。However, in such a polyurethane sheet pad, there is a problem in that the seating feeling is impaired because there is no soft feeling in seating because all the side parts have high hardness. Further, since all the side portions have high hardness, there is a drawback that when the skin material is assembled, the skin material does not fit well with the skin material and wrinkles are generated, resulting in poor finish quality.
【０００９】[0009]
【発明が解決しようとする課題】本発明の目的は側面ホ
ールド性が良いと共に、着座時においてサイド部表面に
ソフト感があり、且つ表皮材にシワ等の発生のないポリ
ウレタンシートパツドの製造方法を提供することにあ
る。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing a polyurethane sheet pad that has good side holdability, has a soft side surface when seated, and has no wrinkles on the skin material. To provide.
【００１０】[0010]
【課題を解決するための手段】本発明は発泡製品の裏面
側部分を成形する裏面型と表面側部を成形する表面型と
からなる発泡型の表面型内にポリウレタン発泡原液を注
入発泡成形させてポリウレタンフオームからなるシート
パツドの製造方法において、表面型の発泡後製品のサイ
ド部表面に相当する部位に、製品のサイド部下部を構成
するポリウレタンよりも低硬度となるポリウレタン発泡
原液をスプレー塗布して発泡成形したのち、座部に相当
する部位に製品のサイド部下部を構成するポリウレタン
よりも低硬度となるポリウレタン発泡原液及びサイド部
下部に相当する部位にポリウレタン発泡原液を注入して
発泡一体化したことを特徴とするポリウレタンシートパ
ツドの製造方法に係る。According to the present invention, a polyurethane foaming undiluted solution is injected and foamed into a surface mold of a foaming mold composed of a back mold for molding a back surface side portion of a foamed product and a surface mold for molding a front surface side portion. In a method of manufacturing a sheet pad made of polyurethane foam, a polyurethane foam stock solution having a hardness lower than that of the polyurethane forming the lower part of the side part of the product is spray-applied to the part corresponding to the side part surface of the product after the surface type foaming. After foam molding, a polyurethane foam stock solution having a hardness lower than that of the polyurethane forming the lower part of the side part of the product is injected into the part corresponding to the seat part, and a polyurethane foaming stock solution is injected into the part corresponding to the lower part of the side part to perform foam integration. The present invention relates to a method for producing a polyurethane sheet pad.
【００１１】又、本発明は発泡製品の裏面側部分を成形
する裏面型と表面側部を成形する表面型とからなる発泡
型の表面型内にポリウレタン発泡原液を注入発泡成形さ
せてポリウレタンフオームからなるシートパツドの製造
方法において、表面型の発泡後製品のサイド部表面に相
当する部位及び座部表面に相当する部位の両部位に、製
品のサイド部下部を構成するポリウレタンよりも低硬度
となるポリウレタン発泡原液をスプレー塗布して発泡成
形したのち、座部の残部下面部に相当する部位に製品の
サイド部下部を構成するポリウレタンよりも低硬度とな
るポリウレタン発泡原液及びサイド部下部に相当する部
位にポリウレタン発泡原液を注入して発泡一体化したこ
とを特徴とするポリウレタンシートパツドの製造方法に
係る。Further, according to the present invention, a polyurethane foaming stock solution is injected into a surface mold of a foaming mold composed of a back mold for molding a back surface side portion of a foamed product and a surface mold for molding a front surface side portion, and foamed and molded from a polyurethane foam. In the method for producing a sheet pad, the polyurethane having a lower hardness than the polyurethane forming the lower portion of the side portion of the product at both the portion corresponding to the surface of the side portion of the surface type foamed product and the portion corresponding to the surface of the seat portion. After spray-foaming the foaming undiluted solution and foam-molding, the parts corresponding to the bottom surface of the rest of the seat part have a lower hardness than the polyurethane forming the lower part of the side part of the product, and the part corresponding to the lower part of the side part. The present invention relates to a method for producing a polyurethane sheet pad, which comprises injecting a polyurethane foaming undiluted solution to perform foaming integration.
【００１２】以下、図面により本発明について説明す
る。The present invention will be described below with reference to the drawings.
【００１３】図５は本発明の請求項１の方法により得ら
れるシートパツドの断面概略図であり、座部ポリウレタ
ンフオーム８の両側にそれぞれサイド部表面ポリウレタ
ンフオーム９及びサイド部下部ポリウレタンフオーム10
を有している。FIG. 5 is a schematic sectional view of a seat pad obtained by the method of claim 1 of the present invention. The side surface polyurethane foam 9 and the side lower polyurethane foam 10 are provided on both sides of the seat polyurethane foam 8, respectively.
have.
【００１４】図６は本発明の請求項２の方法により得ら
れるシートパツドの断面概略図であり、座部ポリウレタ
ンフオームは表面部11と残部下面部12の２層構造になつ
ている。サイド部表面ポリウレタンフオーム及びサイド
部下部ポリウレタンフオームは図５と同様である。図６
のシートパツドにおいて座部表面部11とサイド部表面部
９は同一のポリウレタン発泡原液とするのが作業上好ま
しいが、異なるものとしても良い。FIG. 6 is a schematic cross-sectional view of a seat pad obtained by the method of claim 2 of the present invention. The seat polyurethane foam has a two-layer structure of a surface portion 11 and a remaining lower surface portion 12. The side surface polyurethane foam and the side lower polyurethane foam are the same as in FIG. Figure 6
In the seat pad, it is preferable in operation that the seat surface portion 11 and the side surface portion 9 are made of the same polyurethane foaming stock solution, but they may be different.
【００１５】本発明において上記のようにスプレー塗布
する部位は、発泡製品のサイド部表面、もしくは製品表
面全面が可能であり、厚みとしては５〜20mmが好まし
く、硬度としては、スプレー塗布部硬度Ａ、座部硬度
Ｂ、サイド部硬度Ｃとした場合、下記に示す関係が可能
である。 In the present invention, the portion to be spray-coated as described above can be the side surface of the foamed product or the entire surface of the product. The thickness is preferably 5 to 20 mm, and the hardness is the spray-coated portion hardness A. , Seat hardness B, and side hardness C, the following relationships are possible.
【００１６】[0016]
【実施例】実施例１ 発泡製品の裏面側部分を成形する裏面型と表面部分を成
形する表面型とからなる発泡型でシートパツド製品のサ
イド部表面に相当する部位にスプレーにて、コア密度0.
06g／cm3、厚み10mm、測定範囲が５kgf用のプツシユプ
ルゲージでの硬さ測定で0.5kgfとなるようなポリウレタ
ン発泡原液を塗布した後、座部にコア密度0.05g／cm3、
25％圧縮硬さ13.0g／314cm2、サイド部にコア密度0.07g
／cm3、上記プツシユプルゲージでの硬さ測定で2.5kgf
となるようなポリウレタン発泡原液を注入発泡し一体化
させて３種類の硬度のポリウレタンフオームよりなる異
硬度シートパツドを得た。Example 1 A foaming mold including a back mold for molding a back surface side portion of a foamed product and a front surface mold for molding a front surface portion is sprayed onto a portion corresponding to a side surface of a sheet pad product, and a core density of 0 is obtained. .
06g / cm 3 , thickness 10mm, measuring range is 5kgf, after applying polyurethane foaming undiluted solution with hardness measurement with push-pull gauge of 0.5kgf, core density is 0.05g / cm 3 on the seat,
25% compression hardness 13.0g / 314cm 2 , side side core density 0.07g
/ Cm 3 , 2.5kgf by hardness measurement with the above push-pull gauge
Then, a polyurethane foaming stock solution was injected and foamed to be integrated to obtain a different hardness sheet pad made of polyurethane foam having three kinds of hardness.
【００１７】[0017]
【発明の効果】本発明により得られた異硬度シートパツ
ドは、側面ホールド性が良く、且つ、サイド部表面層が
ソフトなため着座フイーリングが極めて優れている。更
に、表皮材アツセンブリにおいてサイド部の巻き込み時
にシワ等を発生せず仕上り品質が向上する。EFFECTS OF THE INVENTION The different hardness sheet pad obtained by the present invention has a good side holding property and a very soft side surface layer, so that the seating feeling is extremely excellent. Further, in the skin material assembly, wrinkles or the like do not occur when the side portions are rolled up, and the finish quality is improved.
【００１８】[0018]
【図１〜２】従来の方法による異硬度ポリウレタンシー
トパツドの製造法を示す概略図である。1 and 2 are schematic views showing a method for producing a pad of different hardness polyurethane sheet by a conventional method.
【図３〜４】図１〜２の方法の改良を示す従来の製造法
の概略図である。3-4 are schematic views of a conventional manufacturing method showing an improvement of the method of FIGS. 1-2.
【図５〜６】本発明の方法により得られたシートパツド
の断面概略図である。5 to 6 are schematic cross-sectional views of the sheet pad obtained by the method of the present invention.
１,１' 成形型 ２,３ 原料注入ノズル ４,４',４",５,５' ポリウレタン原料 ６,６' 異硬度ポリウレタンシートパツド ７ 仕切り ８ 座部ポリウレタンフオーム ９ サイド部表面ポリウレタンフオーム 10 サイド部下部ポリウレタンフオーム 11 座部表面部ポリウレタンフオーム 12 座部下面部ポリウレタンフオーム 1,1 'Mold 2,3 Raw material injection nozzle 4,4', 4 ", 5,5 'Polyurethane raw material 6,6' Different hardness polyurethane sheet pad 7 Partition 8 Seat polyurethane foam 9 Side polyurethane foam 10 Side lower polyurethane foam 11 Seat surface polyurethane foam 12 Seat lower surface polyurethane foam
Claims (2)
と表面側部を成形する表面型とからなる発泡型の表面型
内にポリウレタン発泡原液を注入発泡成形させてポリウ
レタンフオームからなるシートパツドの製造方法におい
て、表面型の発泡後製品のサイド部表面に相当する部位
に、製品のサイド部下部を構成するポリウレタンよりも
低硬度となるポリウレタン発泡原液をスプレー塗布して
発泡成形したのち、座部に相当する部位に製品のサイド
部下部を構成するポリウレタンよりも低硬度となるポリ
ウレタン発泡原液及びサイド部下部に相当する部位にポ
リウレタン発泡原液を注入して発泡一体化したことを特
徴とするポリウレタンシートパツドの製造方法。1. A sheet pad made of polyurethane foam by pouring and foaming a polyurethane foaming undiluted solution into a surface mold of a foaming mold composed of a back mold for molding a back surface side portion of a foamed product and a surface mold for molding a front surface side portion. In the manufacturing method, after the foaming of the surface type, the part corresponding to the surface of the side part of the product after foaming is spray-coated with the polyurethane foaming undiluted solution having a hardness lower than that of the polyurethane forming the lower part of the side part of the product, and then the seat part is formed. Polyurethane foaming undiluted solution having a hardness lower than that of the polyurethane forming the lower part of the side part of the product, and polyurethane undiluted stock solution is injected into the part corresponding to the lower part of the side part for foaming integration. Pad manufacturing method.
と表面側部を成形する表面型とからなる発泡型の表面型
内にポリウレタン発泡原液を注入発泡成形させてポリウ
レタンフオームからなるシートパツドの製造方法におい
て、表面型の発泡後製品のサイド部表面に相当する部位
及び座部表面に相当する部位の両部位に、製品のサイド
部下部を構成するポリウレタンよりも低硬度となるポリ
ウレタン発泡原液をスプレー塗布して発泡成形したの
ち、座部の残部下面部に相当する部位に製品のサイド部
下部を構成するポリウレタンよりも低硬度となるポリウ
レタン発泡原液及びサイド部下部に相当する部位にポリ
ウレタン発泡原液を注入して発泡一体化したことを特徴
とするポリウレタンシートパツドの製造方法。2. A sheet pad made of polyurethane foam by pouring and foaming a polyurethane foaming undiluted solution into a surface mold of a foaming mold comprising a back mold for molding a back surface side part of a foamed product and a surface mold for molding a front surface side part. In the manufacturing method, a polyurethane foaming undiluted solution having a hardness lower than that of the polyurethane forming the lower part of the side part of the product is provided on both the part corresponding to the side part surface of the surface type foamed product and the part corresponding to the seat part surface. After spray coating and foam molding, the polyurethane foam stock solution that has lower hardness than the polyurethane forming the lower part of the side part of the product in the part corresponding to the lower surface of the rest of the seat and the polyurethane foam stock solution in the part corresponding to the lower part of the side part A method for producing a polyurethane sheet pad, which comprises injecting and foaming to integrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2413396A JPH0645153B2 (en) | 1990-12-20 | 1990-12-20 | Method of manufacturing polyurethane sheet pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2413396A JPH0645153B2 (en) | 1990-12-20 | 1990-12-20 | Method of manufacturing polyurethane sheet pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04220313A JPH04220313A (en) | 1992-08-11 |
| JPH0645153B2 true JPH0645153B2 (en) | 1994-06-15 |
Family
ID=18522050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2413396A Expired - Lifetime JPH0645153B2 (en) | 1990-12-20 | 1990-12-20 | Method of manufacturing polyurethane sheet pad |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645153B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3778104B2 (en) * | 1996-12-09 | 2006-05-24 | 東海興業株式会社 | Three-layer structure cushion pad and manufacturing method thereof |
| KR20040019785A (en) * | 2002-08-29 | 2004-03-06 | (주)현대공업 | A motorcar Seat manufacturing method |
-
1990
- 1990-12-20 JP JP2413396A patent/JPH0645153B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04220313A (en) | 1992-08-11 |
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| Date | Code | Title | Description |
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| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19941206 |