JPH0696059B2 - Sheet pad manufacturing method - Google Patents
Sheet pad manufacturing methodInfo
- Publication number
- JPH0696059B2 JPH0696059B2 JP2281451A JP28145190A JPH0696059B2 JP H0696059 B2 JPH0696059 B2 JP H0696059B2 JP 2281451 A JP2281451 A JP 2281451A JP 28145190 A JP28145190 A JP 28145190A JP H0696059 B2 JPH0696059 B2 JP H0696059B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- supporter material
- thickness
- polyurethane
- molding
- 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 - Fee Related
Links
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はシート構成部材の鋼鉄製のシートフレームとポ
リウレタン層との擦れによる異音を防止したシートパツ
ドの製造方法に関する。Description: TECHNICAL FIELD The present invention relates to a method of manufacturing a seat pad in which abnormal noise due to rubbing between a steel sheet frame of a seat constituent member and a polyurethane layer is prevented.
（従来の技術） 従来ポリウレタンフオームで成形されるクツシヨン体の
裏面（バネを受ける面）には例えば特開昭52−105980
号、同58−138622号に記載されているように、バネによ
るクツシヨン体裏面への損傷を防ぐために、サポータ材
として目付量が100g/m2程度で厚みが1mm程度のポリエス
テルよりなる粗毛布が使用されている。しかし、このよ
うなサポータ材ではポリウレタンフオームとの一体成形
時にサポータ材を通してフレーム接触面側にポリウレタ
ン発泡原液がしみ出し、その結果フレームとポリウレタ
ン層が擦れ異音が発生するという問題点がある。このた
め例えばシリコン離型剤をモールドに塗布したり、或い
は後工程でポリウレタンフオームにシリコン又は離型剤
をスプレー塗布して摩擦係数を低くして異音を防止する
ことが行われているが、シリコン又は離型剤の異音防止
効果の持続性が短いため、経時により異音が発生すると
いう問題がある。(Prior Art) The back surface (the surface for receiving a spring) of a cushion body conventionally formed of polyurethane foam is disclosed in, for example, Japanese Patent Laid-Open No. 52-105980.
No. 58-138622, a coarse blanket made of polyester with a basis weight of about 100 g / m 2 and a thickness of about 1 mm is used as a supporter material in order to prevent damage to the back surface of the cushion body by a spring. It is used. However, such a supporter material has a problem that the polyurethane foaming stock solution exudes to the frame contact surface side through the supporter material when integrally molded with the polyurethane foam, and as a result, the frame and the polyurethane layer are rubbed and an abnormal noise is generated. For this reason, for example, a silicone mold release agent is applied to the mold, or silicone or a mold release agent is sprayed on a polyurethane foam in a later step to lower the friction coefficient and prevent abnormal noise. There is a problem that abnormal noise is generated over time because the effect of preventing abnormal noise by the silicone or the release agent is short.
その他、含浸防止のために中間材を使用した実公昭56−
37412号、フレーム接触部位に消音材や補強材を使用し
た実開昭60−170154号、実開平１−150040号等がある
が、いずれも加工工数や加工費がかかるためコストアツ
プとなつたり、モールドへのセツト不良等の問題があ
る。In addition, Jikkou 56-, which uses an intermediate material to prevent impregnation
No. 37412, No. 60-170154, No. Kaikai No. 160154, and No. 1-150040, No. Kaikai, which use a sound deadening material or a reinforcing material in the frame contact area, are costly because they require processing man-hours and processing costs. There is a problem such as a defective set.
（発明が解決しようとする課題） 本発明の目的はシート構成部材でシートパツドを支持す
るシートフレームとポリウレタン層との擦れによる異音
を防止したシートパツドの製造方法を提供することにあ
る。(Problem to be Solved by the Invention) An object of the present invention is to provide a method of manufacturing a seat pad in which abnormal noise due to rubbing between a seat frame supporting the seat pad and a polyurethane layer is prevented by a seat constituent member.
（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
側部分を成形する表面型とからなる発泡型の裏面型にサ
ポータ材を取り付け、モールド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
シートパツドの底面にサポータ材を一体化したシートパ
ツドの製造方法において、該サポータ材が通気量60〜26
0cc/cm2/sec、厚みが4.5〜10mmの範囲であり、厚み（横
軸）と通気量（縦軸）の座標において、（4.5,60），
（7.5,260），（10,140）で示される３点を直線で結ん
だ範囲内の織布もしくは不織布であることを特徴とする
シートパツドの製造方法に係る。(Means for Solving the Problem) The present invention attaches a supporter material to a back mold of 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 side portion, and a polyurethane is provided in the mold. In a method for manufacturing a sheet pad in which a foaming undiluted solution is injected and foam-molded to integrate a supporter material on the bottom surface of a sheet pad made of polyurethane foam, the supporter material has an air flow rate of 60 to 26.
0cc / cm 2 / sec, thickness is in the range of 4.5-10mm, in the coordinates of thickness (horizontal axis) and air flow rate (vertical axis), (4.5,60),
(7.5,260), (10,140) A woven or non-woven fabric within a range in which three points are connected by a straight line.
本発明の製造方法においてはサポータ材として上記のよ
うに特定のサポータ材を使用することを特徴とする。こ
のようなサポータ材を用いることによりウレタン発泡原
液がサポータ材を貫通することがなく、従つてフレーム
とポリウレタン層と擦れによる異音の発生がない。The manufacturing method of the present invention is characterized by using the specific supporter material as described above as the supporter material. By using such a supporter material, the urethane foaming undiluted solution does not penetrate the supporter material, and accordingly, no abnormal noise is generated due to friction between the frame and the polyurethane layer.
本発明において織布としてはアクリル、綿等、不織布と
してはアクリル、ポリエステル等の粗毛布、フエルト等
を用いることができる。例えばサポータ材として用いる
不織布の製造法としては、 （イ）ニードルパンチングで代表される機械的結合方
法、 （ロ）シーロ状繊維に直接接着剤をスプレー又は含浸し
て乾燥させる化学的結合方法、 （ハ）繊維長の長い短繊維集合体を開繊後、展綿積層し
た層状体に熱可塑性又は熱硬化性合成樹脂バインダーを
含浸、乾燥させる方法等、任意の方法が採用される。In the present invention, acrylic, cotton, etc. may be used as the woven fabric, and coarse blanket such as acrylic, polyester, etc., felt, etc. may be used as the non-woven fabric. For example, as a method for producing a non-woven fabric used as a supporter material, (a) a mechanical bonding method represented by needle punching, (b) a chemical bonding method in which the adhesive fibers are directly sprayed or impregnated with the adhesive and dried, C) After opening a short fiber aggregate having a long fiber length, an arbitrary method such as a method of impregnating a layered body obtained by spreading and spreading with a thermoplastic or thermosetting synthetic resin binder and drying is adopted.
本発明においてサポータ材の通気量は５〜300cc/cm2/se
c、厚みは0.6〜10mmの範囲であることが必要であり、第
１図の斜線部の範囲が好ましい。即ち第１図において座
標で（0.6,5），（10,5），（10,300），（6,300）で示
される４点を直線で結んだ範囲の特性を有するサポータ
材が好ましく、特に座標（4,50），（8,50），（8,20
0），（6,200）で示される４点を直線で結んだ範囲の特
性を有するサポータ材が好ましい。In the present invention, the ventilation amount of the supporter material is 5 to 300 cc / cm 2 / se.
c, the thickness must be in the range of 0.6 to 10 mm, and the range of the shaded area in FIG. 1 is preferable. That is, in FIG. 1, a supporter material having characteristics in a range in which four points indicated by coordinates (0.6,5), (10,5), (10,300), and (6,300) are connected by a straight line is preferable, and particularly, the coordinate (4 , 50), (8,50), (8,20
A supporter material having characteristics in a range in which four points indicated by 0) and (6,200) are connected by a straight line is preferable.
第１図のグラフの斜線部以外の範囲にあるサポータ材
で、通気量が300cc/cm2/secより多い物の場合は、ポリ
ウレタンコールドキユアフオームのような発泡圧の高い
場合、ポリウレタン発泡原液がサポータ材を貫通するた
めフレームとポリウレタン層との擦れにより異音が発生
することがある。又、通気量が5cc/cm2/sec未満の場合
は、サポータ材とポリウレタン層との境界面にボイド
（空気溜り）が発生して界面剥離をおこして一体化でき
ないという問題が発生することがある。更に厚みが10mm
を越える場合はモールドへのセツトが難しくモールドに
なじまない等、不適当である。If the supporter material is in a range other than the shaded area in the graph of Fig. 1, and the air flow rate is more than 300cc / cm 2 / sec, the polyurethane foaming stock solution is used when the foaming pressure is high, such as polyurethane cold cure foam. However, since it penetrates the supporter material, the noise may occur due to the friction between the frame and the polyurethane layer. Also, if the air flow rate is less than 5 cc / cm 2 / sec, voids (air pockets) may occur at the interface between the supporter material and the polyurethane layer, causing interfacial peeling and the problem that integration cannot occur. is there. Further thickness is 10 mm
If it exceeds the range, it is unsuitable because it is difficult to set it in the mold and it does not fit in the mold.
本発明のシートパツドの製造方法においてはサポータ材
として上記のサポータ材を使用する以外は通常公知の方
法に従うことができる。In the method of manufacturing the sheet pad of the present invention, a generally known method can be used except that the above-mentioned supporter material is used as the supporter material.
（実 施 例） 以下、実施例を挙げて本発明について説明する。(Examples) Hereinafter, the present invention will be described with reference to Examples.
実施例１ 目付量260g/m2、厚み5mm、通気量200cc/cm2/secのポリ
エステル繊維からなる不織布を発泡型の裏面型に取り付
けた後、表面型にコア密度0.055g/cm3、25％圧縮硬さ1
3.0kgf/314cm2になるようポリウレタン発泡原液を注入
発泡して、厚み70mmのポリウレタンフオームと上記不織
布が、フレーム接触面側にポリウレタン発泡原液のしみ
出しもなく、かつサポータ材とポリウレタンフオームと
の境界面にボイド（空気溜り）もなく一体化された複合
体シートパツドを得た。Example 1 A non-woven fabric made of polyester fiber having a basis weight of 260 g / m 2 , a thickness of 5 mm, and an air flow rate of 200 cc / cm 2 / sec was attached to a back mold of a foaming mold, and then a core density of 0.055 g / cm 3 , 25 was applied to the front mold. % Compression hardness 1
Polyurethane foam stock solution is injected and foamed to 3.0 kgf / 314 cm 2, and the polyurethane foam with a thickness of 70 mm and the above non-woven fabric do not exude the polyurethane foam stock solution to the frame contact surface side, and the boundary between the supporter material and the polyurethane foam. A composite sheet pad integrated with no voids (air pockets) on the surface was obtained.
上記で得られたシートパツドを２℃、30％RHの恒音恒湿
室内で鋼鉄製フレームと擦り合わせて発生する音を、小
野測器（株）製の音響インテンシテイ解析装置により音
圧測定した。一方、従来品の目付量100g/m2、厚み1mmの
ポリエステル粗毛布をサポータ材として用いたシートパ
ツド、及び、効果確認のため恒温恒湿室内について同様
に音圧を測定した。The sound pressure generated by rubbing the sheet pad obtained above with a steel frame in a constant temperature and humidity chamber at 2 ° C. and 30% RH was measured by an acoustic intensity analyzer manufactured by Ono Sokki Co., Ltd. . On the other hand, the sound pressure was similarly measured in a sheet pad using a conventional product of 100 g / m 2 in weight and a 1 mm thick polyester rough blanket as a supporter material, and in a constant temperature and constant humidity chamber to confirm the effect.
第２〜４図にそれぞれ本発明のシートパツド（第２図）
と上記従来のシートパツド（第３図）及び恒温恒室内
（第４図）の音響インテンシテイ（Acoustic Intensit
y）スペクトルを示す。この図より本発明により製造さ
れたシートパツドは鋼鉄製フレームと擦りあわせても、
可聴範囲外、もしくは音圧レベルの低い異音として聞き
取れない音しか発生せず、異音防止に効果があることが
判る。2 to 4 respectively show the seat pad of the present invention (FIG. 2).
And the above-mentioned conventional seat pad (Fig. 3) and the acoustic intensity of the thermostatic chamber (Fig. 4).
y) shows the spectrum. From this figure, the seat pad manufactured according to the present invention can be rubbed with a steel frame,
It can be seen that it is effective in preventing abnormal noise because it produces only inaudible noise outside the audible range or as abnormal noise with a low sound pressure level.
実施例２〜５及び比較例１〜４ 第１表に示す特性を有するサポータ材を使用した以外は
実施例１と同様にしてシートパツドを製造した。その結
果を同様第１表に示す。Examples 2 to 5 and Comparative Examples 1 to 4 Sheet pads were manufactured in the same manner as in Example 1 except that the support material having the characteristics shown in Table 1 was used. The results are also shown in Table 1.
実施例６ サポータ材として目付量200g/m2、厚み2mm、通気量60cc
/cm2/secの綿からなる織布を用いた以外は実施例１と同
様にして、複合体シートパツドを得た。 Example 6 As a supporter material, the basis weight is 200 g / m 2 , the thickness is 2 mm, and the ventilation is 60 cc.
A composite sheet pad was obtained in the same manner as in Example 1 except that a woven fabric made of cotton of / cm 2 / sec was used.
得られたシートパツドは実施例１と同様にポリウレタン
発泡原液のしみだし及びボイドがなく、且つ異音として
聞き取れない音しか発生せず異音防止効果に優れてい
た。Similar to Example 1, the obtained sheet pad had no bleeding and voids of the polyurethane foaming stock solution, and produced only an inaudible sound as an abnormal sound, and was excellent in the effect of preventing abnormal sound.
第１図はサポータ材の通気量と厚みの関係を示すグラ
フ、第２〜４図はそれぞれ本発明のシートパツド、上記
従来のシートパツド及び恒温恒湿室内の音響インテンシ
テイ（Acoustic Intensity）スペクトルである。FIG. 1 is a graph showing the relationship between the air flow rate and the thickness of a supporter material, and FIGS. 2 to 4 are acoustic intensity spectra in the seat pad of the present invention, the conventional seat pad and the constant temperature and humidity chamber, respectively.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｂ２９Ｋ 105:14 Ｂ２９Ｌ 31:58 4Ｆ (72)発明者 曽木 秀仁 愛知県西加茂郡三好町大字打越字生賀山３ 番地 東洋ゴム工業株式会社自動車部品技 術センター内 (56)参考文献 特開 昭60−241487（ＪＰ，Ａ) 実公 昭56−37412（ＪＰ，Ｙ２)─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Reference number within the agency FI technical display location // B29K 105: 14 B29L 31:58 4F (72) Inventor Hidehito Sogi Ami prefecture Miyoshi-cho, Nishikamo-gun Uchikoshi character Igayama No. 3 Toyo Tire & Rubber Co., Ltd., Automotive Parts Technology Center (56) References JP-A-60-241487 (JP, A) JPK-56-37412 (JP, Y2)
Claims (1)
表面側部分を成形する表面型とからなる発泡型の裏面型
にサポータ材を取り付け、モールド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底面にサポータ材を一体化したシー
トパツドの製造方法において、該サポータ材が通気量60
〜260cc/cm2/sec、厚みが4.5〜10mmの範囲であり、厚み
（横軸）と通気量（縦軸）の座標において、（4.5,6
0），（7.5,260），（10,140）で示される３点を直線で
結んだ範囲内の織布もしくは不織布であることを特徴と
するシートパツドの製造方法。1. A supporter material is attached to a back mold of a foaming mold comprising a back mold for molding a back surface side portion of a foamed product and a front surface mold for molding a front surface side portion, and a polyurethane foaming undiluted solution is injected into the mold for foam molding. In a method of manufacturing a seat pad in which a support pad material is integrally formed on the bottom surface of the seat pad made of polyurethane foam, the support material is
〜260cc / cm 2 / sec, thickness 4.5 ~ 10mm, in the coordinates of thickness (horizontal axis) and air flow rate (vertical axis) (4.5,6
0), (7.5,260), (10,140) is a woven or non-woven fabric within the range in which three points are connected by a straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2281451A JPH0696059B2 (en) | 1990-10-18 | 1990-10-18 | Sheet pad manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2281451A JPH0696059B2 (en) | 1990-10-18 | 1990-10-18 | Sheet pad manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04159907A JPH04159907A (en) | 1992-06-03 |
| JPH0696059B2 true JPH0696059B2 (en) | 1994-11-30 |
Family
ID=17639364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2281451A Expired - Fee Related JPH0696059B2 (en) | 1990-10-18 | 1990-10-18 | Sheet pad manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0696059B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5637412U (en) * | 1979-08-31 | 1981-04-09 | ||
| JPS60241487A (en) * | 1984-05-14 | 1985-11-30 | 東京シ−ト株式会社 | Production of trim cover |
-
1990
- 1990-10-18 JP JP2281451A patent/JPH0696059B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04159907A (en) | 1992-06-03 |
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