JP2003284875A - Cushioning material - Google Patents
Cushioning materialInfo
- Publication number
- JP2003284875A JP2003284875A JP2002090773A JP2002090773A JP2003284875A JP 2003284875 A JP2003284875 A JP 2003284875A JP 2002090773 A JP2002090773 A JP 2002090773A JP 2002090773 A JP2002090773 A JP 2002090773A JP 2003284875 A JP2003284875 A JP 2003284875A
- Authority
- JP
- Japan
- Prior art keywords
- foam
- cushion body
- surface layer
- cell diameter
- 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.)
- Granted
Links
Landscapes
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、発泡体を複数積
層したクッション体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushion body formed by laminating a plurality of foams.
【０００２】[0002]
【従来の技術】従来、自動車の座席や座椅子等に、ウレ
タン発泡体等からなるクッション体が多用されている。
しかし、従来のクッション体は、着座する際の初期圧縮
時に着座者に硬さを感じさせることがある。2. Description of the Related Art Conventionally, cushion bodies made of urethane foam or the like have been widely used in automobile seats and chairs.
However, the conventional cushion body sometimes causes the seated person to feel hardness during initial compression when seated.
【０００３】クッション体の初期圧縮時の硬さを改善す
る方法として、クッション体表面にスリットを形成して
変形し易くしたり、低硬度の発泡体と高硬度の発泡体を
積層して低硬度を表層としたりする方法が提案されてい
る。As a method of improving the hardness of the cushion body at the time of initial compression, a slit is formed on the surface of the cushion body to facilitate deformation, or a low hardness foam and a high hardness foam are laminated to reduce the hardness. There has been proposed a method of using as a surface layer.
【０００４】[0004]
【発明が解決しようとする課題】ところが、前記クッシ
ョン体表面にスリットを形成したものにあっては、クッ
ション体表面が弱くなるため、裂けや破れの原因になり
やすく、また硬さの異なる発泡体を積層したものにあっ
ては、表面を柔らかくするために表層の発泡体と基層の
発泡体とで硬度差を大きくすると、着座時に硬さの急変
による違和感を生じ易くなる。However, in the case where a slit is formed on the surface of the cushion body, the surface of the cushion body becomes weak, which easily causes tearing or tearing, and foams having different hardnesses. In the case of a laminated body, if the difference in hardness between the foam of the surface layer and the foam of the base layer is increased in order to soften the surface, a discomfort due to a sudden change in hardness tends to occur during sitting.
【０００５】この発明は、前記の点に鑑みなされたもの
で、着座する際の初期圧縮時に硬さを感じ難く、しかも
表面の強度低下が無く、さらに硬さの急変による違和感
を生じ難いクッション体を提供するものである。The present invention has been made in view of the above points, and it is difficult to feel the hardness at the time of initial compression when sitting, and the strength of the surface does not decrease, and the cushioning body is less likely to cause an uncomfortable feeling due to a sudden change in hardness. Is provided.
【０００６】[0006]
【課題を解決するための手段】請求項１の発明は、複数
の発泡体を積層したクッション体であって、表層の発泡
体を、前記クッション体に対して垂直方向のセル径が水
平方向のセル径よりも小の発泡体としたことを特徴とす
る。According to a first aspect of the present invention, there is provided a cushion body in which a plurality of foam bodies are laminated, wherein the surface foam layer has a cell diameter in a vertical direction which is horizontal to the cushion body. It is characterized in that the foam is smaller than the cell diameter.
【０００７】請求項２の発明は、請求項１において、表
層に隣接する層の発泡体を、クッション体に対して垂直
方向のセル径が水平方向のセル径よりも大の発泡体とし
たことを特徴とする。According to a second aspect of the present invention, in the first aspect, the foam of the layer adjacent to the surface layer is a foam having a cell diameter in a direction perpendicular to the cushion body larger than a cell diameter in a horizontal direction. Is characterized by.
【０００８】請求項３の発明は、請求項１又は２におい
て、表層の発泡体が、軟質ウレタンスラブフォームを該
フォームの発泡方向に対して平行方向に裁断し該裁断方
向がクッション体に対して水平方向となるようにしたも
のからなり、前記表層に隣接する層の発泡体が、軟質ウ
レタンスラブフォームを該フォームの発泡方向に対して
直角方向に裁断し該裁断方向がクッション体に対して水
平方向となるようにしたものからなることを特徴とす
る。According to a third aspect of the present invention, in the first or second aspect, the surface layer foam cuts the flexible urethane slab foam in a direction parallel to the foaming direction of the foam, and the cutting direction is against the cushion body. The foam of the layer adjacent to the surface layer is cut in the horizontal direction, and the flexible urethane slab foam is cut at a right angle to the foaming direction of the foam, and the cutting direction is horizontal to the cushion body. It is characterized in that it is made to be oriented.
【０００９】[0009]
【発明の実施の形態】以下添付の図面に従ってこの発明
を詳細に説明する。図１はこの発明に係る一実施例のク
ッション体の断面図、図２は図１のＡ部を拡大した概略
図、図３は軟質ウレタンスラブフォームを発泡方向に対
して平行方向に裁断する場合を示す概略図、図４は軟質
ウレタンスラブフォームを発泡方向に対して直角方向に
裁断する場合を示す概略図、図５は実施例品及び比較例
品の荷重−撓み曲線である。DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the accompanying drawings. 1 is a sectional view of a cushion body of an embodiment according to the present invention, FIG. 2 is an enlarged schematic view of a portion A of FIG. 1, and FIG. 3 is a case of cutting a soft urethane slab foam in a direction parallel to a foaming direction. FIG. 4 is a schematic view showing a case where a flexible urethane slab foam is cut in a direction perpendicular to the foaming direction, and FIG. 5 is a load-deflection curve of an example product and a comparative example product.
【００１０】図１及び図２に示す本発明の一実施例に係
るクッション体１０は、二つの発泡体１１，２１を積層
し、接着あるいは溶着等で一体化した二層構造のもの
で、座席用クッション体として用いられる。一方の発泡
体１１は、座面側となる表層１２を構成し、該表層１２
の下側に隣接する発泡体２１が基層２２を構成してい
る。A cushion body 10 according to an embodiment of the present invention shown in FIGS. 1 and 2 has a two-layer structure in which two foam bodies 11 and 21 are laminated and integrated by adhesion or welding. Used as a cushion body. One of the foams 11 constitutes a surface layer 12 on the bearing surface side, and the surface layer 12
The foamed body 21 adjacent to the lower side constitutes the base layer 22.
【００１１】前記表層１２を構成する発泡体１１は、前
記クッション体１０に対して垂直方向Ｖのセル径ｄｖ１
が、前記クッション体１０に対して水平方向Ｈのセル径
ｄｈ１よりも小となっている。すなわち、セルが横長形
状になっている。これにより、前記クッション体１０
は、表層１２を座面側として使用した場合に、着座時に
表層１２の発泡体１１が撓み易くなって、初期圧縮時の
硬さを着座者に感じさせ難くする。なお、前記セルは気
孔とも称される。The foam 11 forming the surface layer 12 has a cell diameter dv1 in the vertical direction V with respect to the cushion body 10.
However, it is smaller than the cell diameter dh1 in the horizontal direction H with respect to the cushion body 10. That is, the cells have a horizontally long shape. Thereby, the cushion body 10
When the surface layer 12 is used as the seating surface side, the foamed body 11 of the surface layer 12 is easily bent when seated, making it difficult for the seated person to feel the hardness during initial compression. The cells are also called pores.
【００１２】前記基層２２を構成する発泡体２１は、前
記クッション体１０に対して垂直方向Ｖのセル径ｄｖ２
が、前記クッション体１０に対して水平方向Ｈのセル径
ｄｈ２よりも大となっている。すなわち、セルが縦長形
状になっている。これにより、着座者の荷重を基層２２
の発泡体２１が充分に受けることができる。The foam body 21 forming the base layer 22 has a cell diameter dv2 in the vertical direction V with respect to the cushion body 10.
Is larger than the cell diameter dh2 in the horizontal direction H with respect to the cushion body 10. That is, the cells have a vertically long shape. As a result, the load of the seated person is reduced to the base layer 22.
The foam 21 can be sufficiently received.
【００１３】前記表層１２の発泡体１１と基層２２の発
泡体２１は、硬さを適宜に変えてもよい。特に、前記基
層２２の発泡体２１を表層１２の発泡体１１よりも硬く
して、より重い着座者も充分に支えられるようにしても
よい。その場合、前記表層１２の発泡体１１と基層２２
の発泡体２１との硬度差は、前記着座時の違和感を生じ
させない程度にする。The hardness of the foam 11 of the surface layer 12 and the foam 21 of the base layer 22 may be appropriately changed. In particular, the foam 21 of the base layer 22 may be made harder than the foam 11 of the surface layer 12 so that a heavier seated person can be sufficiently supported. In that case, the foam 11 and the base layer 22 of the surface layer 12
The difference in hardness from the foam 21 is such that the seat does not feel uncomfortable.
【００１４】また、前記表層１２の発泡体１１と基層２
２の発泡体２１の厚みは、クッション体の用途等に応じ
て適宜決定されるが、表層１２が薄すぎるとソフト感が
得られず、逆に表層１２が厚すぎて基層２２が薄くなる
と、着座者の荷重を充分に基層２２で支持できなくな
る。そのため、前記クッション体１０の全厚みを１００
％とした場合に、前記表層１２の厚みは１０〜８０％の
範囲とされるのが好ましい。Further, the foam 11 of the surface layer 12 and the base layer 2
The thickness of the foam 21 of No. 2 is appropriately determined depending on the application of the cushion body and the like, but if the surface layer 12 is too thin, a soft feeling cannot be obtained, and conversely, if the surface layer 12 is too thick and the base layer 22 becomes thin, The load of the seated person cannot be sufficiently supported by the base layer 22. Therefore, the total thickness of the cushion body 10 is 100
%, The thickness of the surface layer 12 is preferably in the range of 10 to 80%.
【００１５】前記表層１２の発泡体１１と基層２２の発
泡体２１の材質は、適宜の発泡体とされるが、中でも軟
質ウレタンフォームは、コストや耐久性等の点から好ま
しいものである。さらに、軟質ウレタンスラブフォーム
から裁断されたものは、特に好ましいものである。The material of the foam 11 of the surface layer 12 and the foam 21 of the base layer 22 is an appropriate foam. Among them, flexible urethane foam is preferable in terms of cost and durability. Further, those cut from a flexible urethane slab foam are particularly preferable.
【００１６】前記軟質ウレタンスラブフォームは原反と
も称されるものであって、離型紙上にウレタンフォーム
原料を流して垂直方向上向きに発泡させたものである。
図３に示すように、軟質ウレタンスラブフォーム３０
は、発泡方向Ｋに対して平行方向Ｋｕ（軟質ウレタンス
ラブフォーム３０に対して垂直方向と一致する）のセル
径ｄｕが、前記発泡方向Ｋに対して直角方向Ｋｓ（軟質
ウレタンスラブフォーム３０に対して水平方向と一致す
る）のセル径ｄｓよりも大となっている。前記軟質ウレ
タンスラブフォーム３０を発泡方向Ｋに対して平行方向
Ｋｕに裁断し、得られた所要厚みの発泡体１１ａを、前
記クッション体１０の表層１２を構成する発泡体１１と
して用いる。その際、前記裁断して得られた発泡体１１
ａは、前記裁断方向（Ｋｕと一致する）が、前記クッシ
ョン体１０に対して水平方向（図２のＨ方向）となるよ
うにして用いられる。The soft urethane slab foam is also referred to as an original fabric, and is made by pouring a urethane foam raw material on a release paper and foaming it vertically upward.
As shown in FIG. 3, flexible urethane slab foam 30
Is a cell diameter du in a direction Ku parallel to the foaming direction K (corresponding to a direction perpendicular to the soft urethane slab foam 30) and a direction Ks perpendicular to the foaming direction K (for the soft urethane slab foam 30). (Which coincides with the horizontal direction) and is larger than the cell diameter ds. The soft urethane slab foam 30 is cut in the direction Ku parallel to the foaming direction K, and the obtained foam 11a having a required thickness is used as the foam 11 forming the surface layer 12 of the cushion body 10. At that time, the foam 11 obtained by cutting
The a is used such that the cutting direction (corresponding to Ku) is the horizontal direction (H direction in FIG. 2) with respect to the cushion body 10.
【００１７】また、前記基層２２を構成する発泡体２１
については、図４に示すように前記軟質ウレタンスラブ
フォーム３０を、前記発泡方向Ｋに対して直角方向Ｋｓ
に裁断し、得られた所要厚みの発泡体２１ａを、前記ク
ッション体１０の基層２２を構成する発泡体２１として
用いる。その際、前記裁断して得られた発泡体２１ａ
は、前記裁断方向（Ｋｓと一致）が、前記クッション体
１０に対して水平方向（図２のＨ方向）となるようにし
て用いられる。Further, the foamed body 21 constituting the base layer 22.
As shown in FIG. 4, the soft urethane slab foam 30 is formed in a direction Ks perpendicular to the foaming direction K.
The foamed body 21a having a required thickness obtained by cutting into the above is used as the foamed body 21 forming the base layer 22 of the cushion body 10. At that time, the foamed body 21a obtained by cutting
Is used such that the cutting direction (coincident with Ks) is horizontal to the cushion body 10 (direction H in FIG. 2).
【００１８】前記のように軟質ウレタンスラブフォーム
３０に対して裁断方向を異ならせて得た発泡体１１ａ，
２１ａを、前記裁断方向がクッション体１０の水平方向
Ｈとなるようにして積層することにより、所望のクッシ
ョン体１０を容易に得ることができるので、合理的であ
る。また、前記発泡体１１ａ，２１ａを、同一の軟質ウ
レタンスラブフォームから裁断して得るようにすれば、
必要となる軟質ウレタンスラブフォームが一つで済み、
極めて効率がよく、経済的である。As described above, the foam 11a obtained by cutting the flexible urethane slab foam 30 in different cutting directions,
By stacking 21a so that the cutting direction is the horizontal direction H of the cushion body 10, a desired cushion body 10 can be easily obtained, which is rational. If the foams 11a and 21a are obtained by cutting from the same soft urethane slab foam,
You only need one soft urethane slab foam,
Extremely efficient and economical.
【００１９】図５は、密度３５ｋｇ／ｃｍ3の軟質ウレ
タンスラブフォームから前記のようにして表層用発泡体
１１ａ（厚み１０ｍｍ）と基層用発泡体２１ａ（厚み４
０ｍｍ）を裁断し、積層して接着剤（日立化成（株）
製、ハイボン１４０２５使用）で一体化した実施例品
と、前記実施例品における表層を無くして基層のみで構
成することにより、セルの長径方向をすべてクッション
体の垂直方向とした長径垂直品と、硬度１９４Ｎ（ＪＩ
Ｓ Ｋ ６４００：９８）、厚み３５ｍｍの軟質ウレタ
ンフォームに、硬度１６６Ｎ（ＪＩＳ Ｋ ６４００：
９８）、厚み１５ｍｍの軟質ウレタンフォームを積層一
体化した異硬度積層品とについて、荷重と撓みの関係を
ＪＩＳ Ｋ ６４００：９８（付属書）にしたがい測定
した結果である。FIG. 5 shows a soft urethane slab foam having a density of 35 kg / cm 3 as described above, which has the foam 11a for the surface layer (thickness 10 mm) and the foam 21a for the base layer (thickness 4).
0 mm) is cut, laminated and adhesive (Hitachi Chemical Co., Ltd.)
Manufactured by using Hibon 14025), and a long-diameter vertical product in which the surface layer of the above-mentioned embodiment product is eliminated and only the base layer is formed so that the long-axis direction of the cell is the vertical direction of the cushion body. Hardness 194N (JI
SK 6400: 98), a soft urethane foam having a thickness of 35 mm, and a hardness of 166 N (JIS K 6400:
98), and a different hardness laminate obtained by laminating and integrating a soft urethane foam having a thickness of 15 mm, the results are measured according to JIS K 6400: 98 (Appendix).
【００２０】図５の測定結果から明らかなように、実施
例品は、滑らかな荷重−撓み曲線となっており、異硬度
積層品のように途中で急激な荷重増大が無く、着座者に
違和感を与えにくくなっている。さらに、実施例品は、
セルの長径が全て垂直となった長形垂直品と比べて初期
圧縮時の荷重が低く、着座時の硬さを与え難くなってい
るのがわかる。As is clear from the measurement results of FIG. 5, the product of the embodiment has a smooth load-deflection curve, and unlike the laminated product of different hardness, there is no sudden increase in load on the way and the seated person feels uncomfortable. Is difficult to give. Furthermore, the example product is
It can be seen that the load at the time of initial compression is lower than that of the long vertical product in which the major axis of the cell is all vertical, and it is difficult to give hardness when sitting.
【００２１】図６は、この発明において、表層を構成す
る発泡体の厚み割合を変化した場合の荷重と撓みの関係
を、ＪＩＳ Ｋ ６４００：９８（付属書）にしたがい
測定した結果である。FIG. 6 shows the results of measurement of the relationship between load and deflection when the thickness ratio of the foam constituting the surface layer is changed according to JIS K 6400: 98 (appendix) in the present invention.
【００２２】なお、前記実施例では、二層品を示した
が、この発明は二層品に限られるものではなく、三層以
上としてもよい。例えば、表層及び基層の何れかあるい
は両方を二層以上にする等である。In the above embodiment, the two-layer product is shown, but the present invention is not limited to the two-layer product, and three or more layers may be used. For example, one or both of the surface layer and the base layer may be two or more layers.
【００２３】[0023]
【発明の効果】以上図示し説明したように、この発明の
クッション体によれば、クッション体の表面に強度低下
の原因となるスリット等を形成することなく着座時の硬
さ感及び違和感を解消できるので、着座感のみならず耐
久性に優れる効果がある。As shown and described above, according to the cushion body of the present invention, the feeling of hardness and discomfort at the time of sitting is eliminated without forming slits or the like on the surface of the cushion body, which cause a decrease in strength. Therefore, not only the feeling of sitting but also the durability is excellent.
【００２４】さらにこの発明は、表層を構成する発泡体
の厚みを変化させることにより、着座感を容易に調節す
ることができるので、使用者の要求等に応じたクッショ
ン体を簡単に得ることができる。Further, according to the present invention, the seating feeling can be easily adjusted by changing the thickness of the foamed material constituting the surface layer, so that a cushioning body that meets the user's request can be easily obtained. it can.
【００２５】またさらにこの発明は、軟質ウレタンスラ
ブフォームに対し裁断方向を異ならせて得た発泡体を積
層してクッション体とすれば、安価かつ簡単に着座感及
び耐久性に優れるクッション体を得ることができる。Further, according to the present invention, if a foamed body obtained by cutting the flexible urethane slab foam in different cutting directions is laminated to form a cushioning body, a cushioning body excellent in seating feeling and durability can be obtained inexpensively and easily. be able to.
【図１】この発明に係る一実施例のクッション体の断面
図である。FIG. 1 is a sectional view of a cushion body according to an embodiment of the present invention.
【図２】図１のＡ部を拡大した概略図である。FIG. 2 is an enlarged schematic view of part A of FIG.
【図３】軟質ウレタンスラブフォームを発泡方向に対し
て平行方向に裁断する場合を示す概略図である。FIG. 3 is a schematic view showing a case where a flexible urethane slab foam is cut in a direction parallel to a foaming direction.
【図４】軟質ウレタンスラブフォームを発泡方向に対し
て直角方向に裁断する場合を示す概略図である。FIG. 4 is a schematic view showing a case where a flexible urethane slab foam is cut in a direction perpendicular to the foaming direction.
【図５】実施例品及び比較例品の荷重−撓み曲線であ
る。FIG. 5 is a load-deflection curve of an example product and a comparative example product.
【図６】表層の厚みを変化させた実施例品の荷重−撓み
曲線である。FIG. 6 is a load-deflection curve of an example product in which the thickness of the surface layer is changed.
１０ クッション体 １１，１１ａ 表層用発泡体 １２ 表層 ２１，２１ａ 基層用発泡体 ２２ 基層 ３０ 軟質ウレタンスラブフォーム Ｋ 発泡方向 Ｋｓ 発泡方向に対して直角方向 Ｋｕ 発泡方向Ｋに対して平行方向 Ｈ クッション体に対して水平方向 Ｖ クッション体に対して垂直方向 ｄｈ１ クッション体に対して水平方向のセル径 ｄｈ２ クッション体に対して水平方向のセル径 ｄｖ１ クッション体に対して垂直方向のセル径 ｄｖ２ クッション体に対して垂直方向のセル径 10 cushion body 11,11a Surface layer foam 12 surface 21,21a Base layer foam 22 Base layer 30 Soft Urethane Slab Foam K foaming direction Ks Direction perpendicular to foaming direction Ku Direction parallel to foaming direction K Horizontal direction to H cushion body V direction vertical to the cushion body dh1 Cell diameter in the horizontal direction with respect to the cushion body dh2 Cell diameter in the horizontal direction with respect to the cushion body dv1 Cell diameter in the direction perpendicular to the cushion body dv2 Cell diameter in the direction perpendicular to the cushion body
Claims (3)
あって、表層の発泡体を、前記クッション体に対して垂
直方向のセル径が水平方向のセル径よりも小の発泡体と
したことを特徴とするクッション体。1. A cushion body formed by laminating a plurality of foam bodies, wherein the foam body of the surface layer is a foam body having a cell diameter in a direction perpendicular to the cushion body smaller than a cell diameter in a horizontal direction. Cushion body characterized by.
ン体に対して垂直方向のセル径が水平方向のセル径より
も大の発泡体としたことを特徴とする請求項１に記載さ
れたクッション体。2. The foam of a layer adjacent to the surface layer is a foam having a cell diameter in the vertical direction with respect to the cushion body larger than a cell diameter in the horizontal direction. Cushion body.
ォームを該フォームの発泡方向に対して平行方向に裁断
し該裁断方向がクッション体に対して水平方向となるよ
うにしたものからなり、前記表層に隣接する層の発泡体
が、軟質ウレタンスラブフォームを該フォームの発泡方
向に対して直角方向に裁断し該裁断方向がクッション体
に対して水平方向となるようにしたものからなることを
特徴とする請求項１又は２に記載されたクッション体。3. The foam of the surface layer is formed by cutting a soft urethane slab foam in a direction parallel to the foaming direction of the foam so that the cutting direction is horizontal to the cushion body. The foam of the layer adjacent to the surface layer comprises a flexible urethane slab foam cut in a direction perpendicular to the foaming direction of the foam so that the cutting direction is horizontal to the cushion body. The cushion body according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002090773A JP3948989B2 (en) | 2002-03-28 | 2002-03-28 | Cushion body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002090773A JP3948989B2 (en) | 2002-03-28 | 2002-03-28 | Cushion body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003284875A true JP2003284875A (en) | 2003-10-07 |
| JP3948989B2 JP3948989B2 (en) | 2007-07-25 |
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ID=29236026
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002090773A Expired - Fee Related JP3948989B2 (en) | 2002-03-28 | 2002-03-28 | Cushion body |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017022824A1 (en) * | 2015-08-04 | 2017-02-09 | 株式会社ブリヂストン | Soft polyurethane foam molded article, and pad for seat |
| US20170101040A1 (en) * | 2014-06-12 | 2017-04-13 | Bridgestone Corporation | Soft polyurethane foam molded article and seat pad |
| EP3375329A4 (en) * | 2015-11-11 | 2018-09-19 | Bridgestone Corporation | Flexible polyurethane foam molded article and pad for sheets |
-
2002
- 2002-03-28 JP JP2002090773A patent/JP3948989B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170101040A1 (en) * | 2014-06-12 | 2017-04-13 | Bridgestone Corporation | Soft polyurethane foam molded article and seat pad |
| US10870377B2 (en) | 2014-06-12 | 2020-12-22 | Bridgestone Corporation | Soft polyurethane foam molded article and seat pad |
| WO2017022824A1 (en) * | 2015-08-04 | 2017-02-09 | 株式会社ブリヂストン | Soft polyurethane foam molded article, and pad for seat |
| CN107920665A (en) * | 2015-08-04 | 2018-04-17 | 株式会社普利司通 | Flexibel polyurethane expansion-molded article and seat cushion |
| EP3375329A4 (en) * | 2015-11-11 | 2018-09-19 | Bridgestone Corporation | Flexible polyurethane foam molded article and pad for sheets |
| US10549666B2 (en) | 2015-11-11 | 2020-02-04 | Bridgestone Corporation | Flexible polyurethane foam molded article, and seat pad |
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| Publication number | Publication date |
|---|---|
| JP3948989B2 (en) | 2007-07-25 |
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