JPS6318487B2 - - Google Patents
Info
- Publication number
- JPS6318487B2 JPS6318487B2 JP55088559A JP8855980A JPS6318487B2 JP S6318487 B2 JPS6318487 B2 JP S6318487B2 JP 55088559 A JP55088559 A JP 55088559A JP 8855980 A JP8855980 A JP 8855980A JP S6318487 B2 JPS6318487 B2 JP S6318487B2
- Authority
- JP
- Japan
- Prior art keywords
- urethane
- stock solution
- foamed
- unfoamed
- cushion body
- 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
Links
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 38
- 239000011550 stock solution Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 15
- 229920003002 synthetic resin Polymers 0.000 claims description 8
- 239000000057 synthetic resin Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 2
- 238000007731 hot pressing Methods 0.000 claims 1
- 238000000059 patterning Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 9
- 239000010985 leather Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 102100027340 Slit homolog 2 protein Human genes 0.000 description 1
- 101710133576 Slit homolog 2 protein Proteins 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Description
【発明の詳細な説明】
本発明はシート用クツシヨン体の製造方法、特
に表被ウレタンとウレタン本体との一体化に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a cushion body for a seat, and particularly to the integration of a urethane cover and a urethane body.
一般に、シートは弾性に富むクツシヨン体をポ
リウレタン樹脂レザー、アクリル樹脂レザー、織
布等で被い、かつ表面にボタン等を装着して成
る。上記クツシヨン体は第１図に示すように発泡
ウレタンより成る厚肉の本体１の上部を薄肉の軟
質な表被ウレタン（通常スラブウレタンを使用）
２を一体化して成るもので、この場合、座りごこ
ちを良好とするために側部２ａが中央部２ｂより
突出する。両者の一体化方法としては、特開昭53
−28829号等で開示する如く、第２図に示すよう
に表被ウレタン２の裏側に非通気性の合成樹脂
（PVC等）シート３を被着し、下型４に設置した
後、未発泡原液５を充填し、ついで下型４の開口
部を上型６で塞いでから、未発泡原液５を発泡さ
せるようにしている。上記シート３を被着する理
由は未発泡原液５が充填された際、これが表被ウ
レタン２に含浸してしまつて、この含浸したもの
が硬化し、これにより表被ウレタン２全体が硬化
して、座りごこちを悪くしてしまうのを防止する
ためである。すなわち、このシート３を被着する
ことにより未発泡原液５が表被ウレタン２に含浸
するのを防止できる。 Generally, a seat is made of a highly elastic cushion body covered with polyurethane resin leather, acrylic resin leather, woven fabric, etc., and buttons etc. are attached to the surface. As shown in Fig. 1, the above cushion body has a thick main body 1 made of foamed urethane, and the upper part is covered with a thin soft urethane surface (usually slab urethane is used).
In this case, the side portions 2a protrude from the center portion 2b to improve sitting comfort. As a method for integrating the two,
As disclosed in No. 28829, etc., as shown in Fig. 2, a non-porous synthetic resin (PVC etc.) sheet 3 is adhered to the back side of the urethane cover 2, placed in the lower mold 4, and then unfoamed. After filling the stock solution 5 and then closing the opening of the lower mold 4 with the upper mold 6, the unfoamed stock solution 5 is foamed. The reason why the sheet 3 is attached is that when the unfoamed stock solution 5 is filled, it impregnates the surface urethane 2, and this impregnated material hardens, thereby hardening the entire surface urethane 2. This is to prevent the seat from becoming uncomfortable. That is, by applying this sheet 3, it is possible to prevent the unfoamed stock solution 5 from impregnating the surface urethane 2.
しかしながら、以上の方法によればウレタン本
体１と表被ウレタン２との間に非通気性のシート
３が介在するので両者間の通気性が悪くなり、し
かも表被ウレタン２に対して、あらかじめこのシ
ート３を一体化する必要があるので作業工数が増
加し、量産性を向上できず、またコストが上昇す
る欠点を有していた。 However, according to the above method, since the non-breathable sheet 3 is interposed between the urethane body 1 and the urethane cover 2, the air permeability between the two deteriorates. Since it is necessary to integrate the sheets 3, the number of man-hours increases, mass productivity cannot be improved, and costs increase.
そこで、本発明者等により下記実施例１、２が
提案された。 Therefore, the following Examples 1 and 2 were proposed by the present inventors.
実施例 １
まず、第３図ａに示すようにシートの表面積と
同程度の面積の板状表被ウレタン２を形成する。
この表被ウレタン２は比較的柔軟性に富むように
その発泡率、材質等が調整されたものから成る。
つぎに、第３図ｂに示すようにこの表被ウレタン
２の裏面となるべき側２ｃをガスバーナ、赤外線
ランプ、発熱ローラ熱プレス等の加熱手段により
加熱し軟化溶融する。なお、この加熱は表被ウレ
タン全体に対しては熱的影響がほとんど与えられ
ず、その裏面側の数mm程度を溶融するだけであ
り、従つて、加熱時間も瞬時的なもので十分であ
る。つぎに、表被エレタン２の溶融裏面２ｃを冷
却硬化することにより、表被ウレタン２の裏面に
硬化した状態の非通気化層２ｄが得られる。つぎ
に、この表被ウレタン２を加熱しつつプレス成形
して、側部に湾曲部分を有する形状とし、これを
第３図ｃに示すように非通気化層２ｄ側が上側を
向くように下型４にセツトし、その上から未発泡
原液５を注入し、上型６で下型４を塞いだ後、原
液５を発泡させる。Example 1 First, as shown in FIG. 3a, a plate-like urethane cover 2 having an area comparable to the surface area of the sheet is formed.
The surface covering urethane 2 is made of a material whose foaming rate, material, etc. have been adjusted so that it is relatively flexible.
Next, as shown in FIG. 3b, the side 2c that is to become the back surface of the urethane covering 2 is heated by a heating means such as a gas burner, an infrared lamp, or a heating roller heat press to soften and melt it. Note that this heating has almost no thermal effect on the entire surface urethane, and only melts a few millimeters on the back side, so an instantaneous heating time is sufficient. . Next, by cooling and hardening the molten back surface 2c of the urethane surface 2, a hardened non-air-permeable layer 2d is obtained on the back surface of the urethane surface 2. Next, the surface urethane 2 is press-molded while heating to form a shape having curved portions on the sides, and as shown in FIG. 4, and the unfoamed stock solution 5 is injected from above, and after the lower mold 4 is closed with the upper mold 6, the stock solution 5 is foamed.
以上の方法によれば、非通気化層２ｄの存在に
より注入された未発泡原液５が表被ウレタン２に
含浸することがなく、一体化されるので、従来必
要とした非通気性シート３を不要とすることがで
きる。このために、表被ウレタン２に非通気性シ
ート３を一体化する作業を省略できるので、量産
性を向上でき、コストを低くできる。また、表被
ウレタンの加熱時間、加熱量を制御することによ
り、非通気化層２ｄにピンホ−ルを形成できるの
で、通気性をもたせることができ、高品位のクツ
シヨン本体を得ることができる。 According to the above method, the injected unfoamed stock solution 5 does not impregnate the surface urethane 2 due to the presence of the non-air permeable layer 2d, and is integrated into the surface urethane 2, so that the non-porous sheet 3, which was conventionally required, can be used. It can be made unnecessary. Therefore, it is possible to omit the work of integrating the air-impermeable sheet 3 into the urethane covering 2, thereby improving mass productivity and reducing costs. In addition, by controlling the heating time and amount of heating of the urethane covering, pinholes can be formed in the non-air-permeable layer 2d, so that air permeability can be imparted and a high-quality cushion body can be obtained.
実施例 ２
本実施例では表被ウレタン２の裏面を加熱溶融
するに際し、第４図の如く表被ウレタン２の平坦
面となるべき部分のみを加熱し、両側２ａは加熱
しない。このように選択加熱した場合、第３図ｃ
に示す如く未発泡原液５を注入すると、表被ウレ
タン２の両側２ａにのみ原液５が含浸され、両側
２ａのみが硬化し、硬質となる。従つて、第１図
に示すように製品として得られたクツシヨン本体
についても両側２ａの突出した部分が平坦面２ｂ
側より硬質となるので、人間工学上、人体の座部
をソフトに包むようになり、大きな安楽感を得る
ことになる。Example 2 In this example, when heating and melting the back side of the urethane cover 2, only the portion of the urethane cover 2 that is to become a flat surface is heated, as shown in FIG. 4, and both sides 2a are not heated. When selectively heated in this way, Fig. 3c
When the unfoamed stock solution 5 is injected as shown in the figure, only the both sides 2a of the surface urethane 2 are impregnated with the stock solution 5, and only the both sides 2a are cured and become hard. Therefore, as shown in FIG. 1, the protruding portions on both sides 2a of the cushion body obtained as a product also have flat surfaces 2b.
Since it is harder than the sides, from an ergonomic point of view, it softly wraps around the seat of the human body, giving a great sense of comfort.
本実施例においては、表被ウレタン２の裏面を
プレス成形前に熱処理するとして説明したが、プ
レス成形後に熱処理しても、あるいは表被ウレタ
ン２を第３図ａに示すような形状に切断する前の
連続した部材のときに熱処理してもよい。 In this embodiment, the back surface of the urethane cover 2 is heat-treated before press forming, but the urethane cover 2 may be heat-treated after press-forming, or the urethane cover 2 may be cut into the shape shown in FIG. 3a. Heat treatment may be applied to the previous continuous member.
ところで、通常、シートＳは第５図、第６図に
示すようにレザー等の表被材１０をウレタン本体
１に設けた溝１ａに引くようにして表被材１０の
一体化を図り、また装飾性を与えている。これは
表被材１０に固定した表被材の引き用ワイヤ１１
を表被ウレタン２に設けたスリツト２0を介して
ウレタン本体１の溝１ａに収納後、ワイヤ１１の
両端を図示しない手段で、溝１ａの底部方向に引
き付けて固定する。従来はあらかじめスリツト２
０を表被ウレタン２に設け、これにシート３を被
着し、この積層体をプレス成形後、第２図に示す
ように下型４に設置した後、未発泡原液５を充填
し、発泡させるようにして一体化を図る。これに
よれば、スリツト２0がシート３で塞がれている
ので、原液５がこのスリツト２0側に漏れる恐れ
がない。ワイヤ１１側を溝１ａに収納する場合
は、シート３のスリツト２0に対応する部分を突
き破つて、溝１ａを開口せしめ、この部分を介し
てワイヤ１１を収納する。 Incidentally, the sheet S is usually manufactured by pulling the outer covering material 10 such as leather into the groove 1a provided in the urethane body 1 to integrate the outer covering material 10, as shown in FIGS. 5 and 6. It gives a decorative quality. This is a wire 11 for pulling the surface material fixed to the surface material 10.
After the wire 11 is housed in the groove 1a of the urethane body 1 through the slit 20 provided in the urethane cover 2, both ends of the wire 11 are pulled toward the bottom of the groove 1a by means not shown and fixed. Previously, slit 2 was
0 is provided on the surface covering urethane 2, the sheet 3 is adhered to this, this laminate is press-molded and placed in the lower mold 4 as shown in FIG. Aim for integration by making the According to this, since the slit 20 is closed with the sheet 3, there is no risk of the stock solution 5 leaking to the slit 20 side. When storing the wire 11 side in the groove 1a, a portion of the sheet 3 corresponding to the slit 20 is pierced to open the groove 1a, and the wire 11 is stored through this portion.
しかして、上記実施例１、２においては非通気
化層２ｄを有する表被ウレタン２にスリツト２0
を形成したのでは、原液５がこのスリツト２0を
介して漏れる恐れがある。 However, in Examples 1 and 2, the slits 2 0
If the slit 20 is formed, there is a risk that the stock solution 5 will leak through the slit 20 .
そこで、本願では非通気化層２ｄを形成する前
又は形成した後、スリツトを形成すべき部分を、
第７図ａに示す如く、こて３０で熱プレスして、
第８図に示す如く薄肉部分３１を形成するのであ
る。そして、この表被ウレタン２を第３図ｃに示
すように下型４にセツトし、未発泡原液５を注入
後、発泡させる。この場合、成形型により溝１ａ
が形成される。ワイヤ１１側を溝１ａに収納する
には、第７図ｂに示す如く、上記熱プレスによる
スリツト形成部分３１をナイフ等で突き破つて、
溝１ａを開口せしめて収納する。すなわち、本願
によれば、スリツト形成部分３１は比較的硬質、
薄肉となつているのでナイフ等で突き破り易くな
り、しかも熱により変色しているので、スリツト
形成の目標が設定し易くなる。 Therefore, in the present application, before or after forming the non-aeration layer 2d, the portion where the slit is to be formed is
As shown in FIG. 7a, heat press with a trowel 30,
As shown in FIG. 8, a thin portion 31 is formed. Then, this urethane covering 2 is set in the lower mold 4 as shown in FIG. 3c, and after pouring the unfoamed stock solution 5, it is foamed. In this case, depending on the mold, the groove 1a
is formed. In order to store the wire 11 side in the groove 1a, as shown in FIG.
The groove 1a is opened and stored. That is, according to the present application, the slit forming portion 31 is relatively hard;
Since it is thin, it is easy to pierce it with a knife, etc., and since it changes color due to heat, it is easier to set the target for slit formation.
なお、熱プレスを行う部分は第９図に示す如く
スリツト形成部分３１を囲繞するような形状であ
つてもよい。 Note that the portion to be hot pressed may have a shape that surrounds the slit forming portion 31 as shown in FIG.
また、ウレタン本体２の上部に表被ウレタンを
一体化するとして説明したが、これに代えて、他
の発泡合成樹脂材を用いてもよい。 Further, although the urethane covering is described as being integrated into the upper part of the urethane main body 2, other foamed synthetic resin materials may be used instead.
以上説明したように本発明によれば、発泡合成
樹脂シート材の裏面に未発泡原液を注入後、この
原液を発泡せしめて、発泡ウレタン本体と発泡合
成樹脂シート材との複合層より成るクツシヨン体
を製造する方法において、未発泡原液を注入する
前に発泡合成樹脂シート材の裏面、好ましくは両
側を除く裏面を熱処理して、非通気化層を形成し
たので、この層で原液の含浸を防止でき、従来必
要とした非通気性のシートを不要にできるので、
量産性を向上でき、また選択的に熱処理すること
により、安楽感の有るシートを得ることができる
とともに、穴又はスリツトの形成部分を薄肉化
し、発泡後に開口するようにしたので、発泡時原
液が漏れ出て発泡不可となるのを防止できる。 As explained above, according to the present invention, an unfoamed stock solution is injected onto the back side of a foamed synthetic resin sheet material, and then this stock solution is foamed to form a cushion body comprising a composite layer of a foamed urethane body and a foamed synthetic resin sheet material. In the method for manufacturing, before injecting the unfoamed stock solution, the back side of the foamed synthetic resin sheet material, preferably the back side excluding both sides, is heat treated to form a non-aerated layer, which prevents impregnation of the stock solution. This eliminates the need for non-breathable sheets that were previously required.
It is possible to improve mass productivity, and by selectively heat-treating, it is possible to obtain a sheet with a sense of comfort.The holes or slits are made thinner and open after foaming, so that the stock solution does not leak during foaming. It can prevent leakage and failure to foam.
第１図、第２図は従来のシート用クツシヨン体
の製造方法の一例を示す簡略構成図、第３図ａ，
ｂ，ｃ及び第４図は近時の本発明者提案によるシ
ート用クツシヨン体の一実施例を示す工程図、第
５図ないし第９図は本発明によるシート用クツシ
ヨン体の他の実施例を示す斜視図である。
１……ウレタン本体、２……表被ウレタン、２
ｄ……非通気化層、３……シート、５……未発泡
原液、３１……スリツト形成部分。
FIGS. 1 and 2 are simplified configuration diagrams showing an example of a conventional method of manufacturing a seat cushion body, and FIGS.
b, c and 4 are process diagrams showing one embodiment of a seat cushion body recently proposed by the present inventor, and FIGS. 5 to 9 show other embodiments of the seat cushion body according to the present invention. FIG. 1...Urethane body, 2...Urethane cover, 2
d... Non-aerated layer, 3... Sheet, 5... Unfoamed stock solution, 31... Slit forming portion.
Claims (1)
を供給後、この原液を発泡せしめて、発泡ウレタ
ン本体と発泡合成樹脂シート材との複合層より成
るクツシヨン本体を製造する方法において、未発
泡原液を注入する前に発泡合成樹脂シート材の裏
面を熱処理して非通気化層を形成するとともに、
表被材のパターン付けを要するための穴又はスリ
ツトの形成部分を薄肉化し、穴又はスリツトの形
成部分を未発泡原液の発泡後に開口したことを特
徴とするシート用クツシヨン体の製造方法。 ２ 穴又はスリツトの形成部分を熱プレスで薄肉
化した特許請求の範囲第１項記載のシート用クツ
シヨン体の製造方法。[Scope of Claims] 1. After supplying an unfoamed stock solution to the back side of a foamed synthetic resin sheet material, this stock solution is foamed to produce a cushion body comprising a composite layer of a foamed urethane body and a foamed synthetic resin sheet material. In the method, before injecting the unfoamed stock solution, the back side of the foamed synthetic resin sheet material is heat-treated to form a non-aerated layer, and
A method for manufacturing a cushion body for a sheet, characterized in that the hole or slit forming portion for requiring patterning of the outer material is thinned, and the hole or slit forming portion is opened after foaming an unfoamed stock solution. 2. The method of manufacturing a seat cushion body according to claim 1, wherein the portion where the holes or slits are formed is thinned by hot pressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8855980A JPS5714312A (en) | 1980-07-01 | 1980-07-01 | Production of seat cushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8855980A JPS5714312A (en) | 1980-07-01 | 1980-07-01 | Production of seat cushion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5714312A JPS5714312A (en) | 1982-01-25 |
| JPS6318487B2 true JPS6318487B2 (en) | 1988-04-19 |
Family
ID=13946217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8855980A Granted JPS5714312A (en) | 1980-07-01 | 1980-07-01 | Production of seat cushion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5714312A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53108166A (en) * | 1977-03-03 | 1978-09-20 | Toyota Auto Body Co Ltd | Production of air permeable sheet for seat |
| JPS5422467A (en) * | 1977-07-21 | 1979-02-20 | Kohkoku Chem Ind | Method of manufacturing cushion body |
-
1980
- 1980-07-01 JP JP8855980A patent/JPS5714312A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53108166A (en) * | 1977-03-03 | 1978-09-20 | Toyota Auto Body Co Ltd | Production of air permeable sheet for seat |
| JPS5422467A (en) * | 1977-07-21 | 1979-02-20 | Kohkoku Chem Ind | Method of manufacturing cushion body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5714312A (en) | 1982-01-25 |
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