JPH0352997B2 - - Google Patents
Info
- Publication number
- JPH0352997B2 JPH0352997B2 JP58174701A JP17470183A JPH0352997B2 JP H0352997 B2 JPH0352997 B2 JP H0352997B2 JP 58174701 A JP58174701 A JP 58174701A JP 17470183 A JP17470183 A JP 17470183A JP H0352997 B2 JPH0352997 B2 JP H0352997B2
- Authority
- JP
- Japan
- Prior art keywords
- foam
- hot
- cold
- cure
- foaming
- 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
- 239000006260 foam Substances 0.000 claims description 64
- 238000005187 foaming Methods 0.000 claims description 18
- 239000011550 stock solution Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000010097 foam moulding Methods 0.000 claims description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims 2
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 11
- 235000019589 hardness Nutrition 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000009472 formulation Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000004088 foaming agent Substances 0.000 description 3
- 229920000570 polyether Polymers 0.000 description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 2
- 239000007809 chemical reaction catalyst Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RTTZISZSHSCFRH-UHFFFAOYSA-N 1,3-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC(CN=C=O)=C1 RTTZISZSHSCFRH-UHFFFAOYSA-N 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- 229920002323 Silicone foam Polymers 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004872 foam stabilizing agent Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000013514 silicone foam Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は硬さが異なる二種の発泡剤を同時発泡
することにより得られるクツシヨン体とその発泡
成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cushion body obtained by simultaneously foaming two types of foaming agents having different hardnesses, and a method for foam molding the same.
自動車のフロントシートクツシヨン、フロント
シートバツク、リアシートクツシヨン及びリアシ
ートバツク等のシートや家具等の椅子をウレタン
樹脂等を発泡せしめて一体成形する場合には、使
用者の体のホールド性を増加せしめるため、硬さ
の異なる部位を有するように成形される場合があ
る。すなわち、第１図において、１は略四角形に
組み付けられたシートのフレームであり、２及び
３はこのフレーム１を埋設するように発泡せしめ
られたパツド材である。この内、背もたれ部とな
るパツド材３よりも両側に突出した舌片状のパツ
ド材２の方が硬くなるように異種の発泡剤が発泡
せしめられて成形され、ホールド性の向上が図ら
れるものである。 When seats such as automobile front seat cushions, front seat backs, rear seat cushions, rear seat backs, etc., and chairs such as furniture are integrally molded by foaming urethane resin, etc., the ability to hold the user's body is increased. Therefore, it may be molded to have parts with different hardness. That is, in FIG. 1, numeral 1 is a frame of a sheet assembled into a substantially rectangular shape, and numerals 2 and 3 are pad materials that are foamed so as to bury this frame 1. Among these, different types of foaming agents are foamed and molded so that the tongue-shaped pad material 2 protruding on both sides is harder than the pad material 3 that forms the backrest, and the holding property is improved. It is.
このような硬さが異なる二種の発泡剤を同時発
泡せしめて、同一パツド剤でも部分的に異なる硬
さを有する成型品の従来の方法は、ホツトキユア
フオームとホツトキユアフオームを使用するか、
あるいはコールドキユアフオームとコールドキユ
アフオームを使用するものであつた。しかしコー
ルドキユアフオームは一般にクツシヨン性が良
く、高い硬度（半硬質状）まで成形可能であるが
密度が高く、費用がかかる欠点を有し、一方、ホ
ツトキユアフオームは密度が低く安価であるがク
ツシヨン性及び硬度が得られない欠点を有し、い
ずれの成形方法も実用性に乏しいものであつた。
これに対して、ホツトキユアフオームとコールド
キユアフオームとを同時発泡せしめて成形するこ
とは各フオームの欠点を補い、良好な成型品を得
ることが可能であるが、このようなホツトキユア
フオームとコールドキユアフオームとを同時発泡
せしめることは従来、不可能とされていた。これ
は、ホツトキユアフオームの発泡は反応速度が小
さいと共に反応触媒が少量であるのに対し、コー
ルドキヤアフオームの発泡は反応速度が大きく、
しかも反応触媒が多量であり、処方が全く相異し
ていると共に、コールドキユアフオームは独立気
泡となつているため型から離脱せしめる際にはク
ラツシングを施すことが必要であり、ホツトキユ
アフオームは開放気泡となつているためクラツシ
ングを必要としない等の工程が相異しているため
であつた。又、使用される整泡剤においても相異
しており、コールドキユアフオームの整泡剤が微
量でもホツトキユアフオーム処方内に混入すると
フオームが崩壊して発泡が不可能となると共に、
ホツトキユアフオームの整泡剤が微量でもコール
ドキユアフオームの処方内に混入するとフオーム
は収縮してクツシヨン体とならないためでもあつ
た。 The conventional method of simultaneously foaming two types of foaming agents with different hardness to produce molded products with partially different hardnesses even with the same padding agent is to use hot cure foam and hot cure foam. mosquito,
Alternatively, a cold cure foam and a cold cure foam were used. However, cold cured foam generally has good cushioning properties and can be molded to a high degree of hardness (semi-rigid state), but has the disadvantage of being high in density and being expensive, whereas hot cured foam has a low density and is inexpensive. Both molding methods had the disadvantage of not being able to provide cushioning properties and hardness, and were impractical.
On the other hand, by simultaneously foaming and molding hot cure foam and cold cure foam, it is possible to compensate for the defects of each foam and obtain a good molded product. It has hitherto been considered impossible to simultaneously foam foam and cold cure foam. This is because foaming with hot foam has a low reaction rate and requires a small amount of reaction catalyst, while foaming with cold foam has a high reaction rate.
Moreover, the reaction catalyst is large, the formulations are completely different, and since cold cured foam has closed cells, it is necessary to crush it when releasing it from the mold. This was because the process was different, such as having open cells and not requiring crushing. The foam stabilizers used also differ; if even a small amount of the foam stabilizer for cold cure foam is mixed into the hot cure foam formulation, the foam will collapse and foaming will become impossible.
This was also because if even a small amount of the foam stabilizer in hot cure foam was mixed into the formulation of cold cure foam, the foam would shrink and would not form a cushion body.
本発明はこのようなホツトキユアフオームとコ
ールドキユアフオームの同時発泡可能とすること
により、各フオームの長所を取り入れたクツシヨ
ン体とその成形方法を提供するものである。 The present invention enables the simultaneous foaming of hot cure foam and cold cure foam, thereby providing a cushion body that incorporates the advantages of each foam, and a method for molding the same.
以下、本発明をさらに詳細に説明する。 The present invention will be explained in more detail below.
第１図々示のように背もたれ部となるパツド材
３をホツトキユアフオームで成形し、舌片状のパ
ツド材２をコールドキユアフオームで成形する場
合、パツド材２の占有容積をVc、その重量を
We、パツド材３の占有容積をVh、その重量を
Whとし、式Wc＝Vc×フリーモールド発泡時の
密度×1.1〜1.3及び式Wh＝Vh×フリーモールド
発泡時の密度×1.3〜1.5を満足するように、各発
泡剤の注入量を決定する。この場合、フリーモー
ルド発泡時の密度は各フオームを単独で発泡せし
めた場合の密度であり、ホツトキユアフオームは
ホツトウレタン樹脂を、又、コールドキユアフオ
ームはコールドウレタン樹脂を夫々、使用してい
る。 As shown in Figure 1, when the pad material 3 forming the backrest is molded with hot cure foam and the tongue-shaped pad material 2 is molded with cold cure foam, the occupied volume of the pad material 2 is Vc, its weight
We, the occupied volume of pad material 3 is Vh, its weight is
Wh, and the injection amount of each blowing agent is determined so as to satisfy the formula Wc=Vc×density during free mold foaming×1.1 to 1.3 and the formula Wh=Vh×density during free mold foaming×1.3 to 1.5. In this case, the density at the time of free mold foaming is the density when each foam is foamed individually, and hot cure foam uses hot urethane resin, and cold cure foam uses cold urethane resin. There is.
このように注入量が決定された後は、双方の発
泡時を合致せしめるため、反応速度の小さいホツ
トキユアフオームの原液を型内に注入し、次い
で、コールドキユアフオームの原液を注入して同
時発泡せしめる。この場合、原液の注入タイミン
グは各々のフリー発泡時のライズタイムを合せる
様にし、その許容差を±15秒以内に設定しておく
ことで、同時発泡が可能となる。 After the injection amount has been determined in this way, in order to match the foaming times of both, the stock solution of hot cure foam, which has a low reaction rate, is injected into the mold, and then the stock solution of cold cure foam is injected. Foam at the same time. In this case, simultaneous foaming is possible by adjusting the injection timing of the stock solution to match the rise time of each free foaming, and by setting the tolerance within ±15 seconds.
このようにして同時発泡されたクツシヨン体は
背もたれ部が弾性のあるホツトキユアフオームで
成形され、舌片状のパツド材が硬度の大きなコー
ルドキユアフオームで成形されるため、ホールド
性が向上すると共に、強度が向上するため、内部
にサイドワイヤ等を埋設する必要がない。又、軽
量化も可能であり、工程も煩雑でないためコスト
の低廉化が可能となる。 In the cushion body that is co-foamed in this way, the backrest part is made of elastic hot cured foam, and the tongue-shaped pad material is made of hardened cold cured foam, which improves its holdability. At the same time, since the strength is improved, there is no need to bury side wires or the like inside. In addition, it is possible to reduce the weight, and the process is not complicated, so it is possible to reduce the cost.
以下、実施例につき、本発明をさらに具体的に
説明する。 Hereinafter, the present invention will be explained in more detail with reference to Examples.
実施例 １
（ホツトキユアフオーム処方）
重量比でポリエーテルポリオール（第一工業製
薬(社)製、Pr−337）100部、オクテン酸第１錫0.18
部で組成物Ａを、又、重量比で精製水４部、触媒
（フードリー(社)製、Dabco33Lv）0.24部、Ｎ−メ
チルモルホリン0.3部、シリコン系整泡剤（日本
ユニカ(社)製、Ｌ−520）1.5部で組成物Ｂを、さら
に重量比で発泡剤（旭硝子(社)製、Ｆ−11）15部、
ポリイソシアネート（武田薬品(社)製、タケネート
80）48.3部で組成物Ｃを構成した。次いで組成物
Ａを均一に混合した混合液に組成物Ｂを均一に混
合し30秒後に組成物Ｃを加えて、５秒後激しく撹
拌して直ちに鉄板箱（350×350×150mm）に移し
た。配合量は上記処方の3.5倍量を用いた。Example 1 (Hot cure foam formulation) Weight ratio: 100 parts of polyether polyol (manufactured by Daiichi Kogyo Seiyaku Co., Ltd., Pr-337), 0.18 parts of stannous octenoate
1 part of composition A, 4 parts of purified water, 0.24 parts of catalyst (Dabco33Lv, manufactured by Foodry Co., Ltd.), 0.3 parts of N-methylmorpholine, and a silicone foam stabilizer (manufactured by Nippon Unica Co., Ltd.). , L-520) at 1.5 parts of composition B, and further added 15 parts by weight of a blowing agent (manufactured by Asahi Glass Co., Ltd., F-11),
Polyisocyanate (manufactured by Takeda Pharmaceutical Co., Ltd., Takenate
80) Composition C was made up of 48.3 parts. Next, Composition B was uniformly mixed into the mixed solution of Composition A, and 30 seconds later, Composition C was added. After 5 seconds, the mixture was vigorously stirred and immediately transferred to an iron plate box (350 x 350 x 150 mm). . The amount used was 3.5 times the amount of the above prescription.
その時のフリーモールドのライズタイムは105
秒であり密度は0.021ｇ／cm3であつた。 The free mold rise time at that time was 105
The density was 0.021 g/cm 3 .
実施例 ２
（コールドキユアフオーム処方）
重量比でポリエーテルポリオール（三井日曹ウ
レタン(社)製、EP−3033）50部、ポリエーテルポ
リオーム（三井日曹ウレタン(社)製、POP・31.28）
50部、精製水2.4部、触媒（フードリー(社)製、
Dabco33LV）0.4部、触媒（UCC(社)製、NiAx
Ａ−１）0.3部、整泡剤（日本コニカ(社)製、Ｌ−
5309）0.8部、トリエタノールアミン4.0部で組成
物Ａを、又、ポリイソシアネート（三井日曹ウレ
タン(社)製、MDI・TM・20）40部で組成物Ｂを構
成した。次いで組成物Ａを均一に混合した混合液
に組成物Ｂを加えて５秒間激しく撹拌して直ちに
鉄板箱350×350×150mm3に移した配合量は上記処
方の3.5倍量を用いた。Example 2 (Cold cure foam formulation) Polyether polyol (manufactured by Mitsui Nisso Urethane Co., Ltd., EP-3033) 50 parts, polyether polyome (manufactured by Mitsui Nisso Urethane Co., Ltd., POP・31.28) )
50 parts, purified water 2.4 parts, catalyst (manufactured by Foodry Co., Ltd.,
Dabco33LV) 0.4 parts, catalyst (manufactured by UCC, NiAx
A-1) 0.3 parts, foam stabilizer (manufactured by Nippon Konica, L-
Composition A was made up of 0.8 parts of 5309) and 4.0 parts of triethanolamine, and Composition B was made up of 40 parts of polyisocyanate (MDI-TM-20, manufactured by Mitsui Nisso Urethane Co., Ltd.). Next, Composition B was added to a uniform mixture of Composition A, stirred vigorously for 5 seconds, and immediately transferred to an iron plate box 350 x 350 x 150 mm 3 .The amount used was 3.5 times that of the above recipe.
その時のフリーモールドのライズタイムは85秒
であり密度は0.050ｇ／cm3であつた。 The rise time of the free mold at that time was 85 seconds and the density was 0.050 g/cm 3 .
実施例 ３
第１図ハで示すように背もたれ部となるパツド
材３をホツトキユアフオームで左右の舌片状のパ
ツド材２，２もコールドキユアフオームで成形し
た場合、その成形後における重量が、
コールドキユアーフオーム２の右の重量（ｇ）
＝3500（ml）×0.050（ｇ／cm3）×1.1〜1.3
＝192.5〜227.5
コールドキユアーフオーム２の左の重量（ｇ）
＝3500（ml）×0.050（ｇ／cm3）×1.1〜1.3
＝192.5〜227.5
ホツトキユアーフオームの重量（ｇ）
＝12000（ml）×0.021（ｇ／cm3）×1.3〜1.5
＝3276.6〜378
上記の範囲でない場合の一体発泡においてはコ
ールドキユアーフオームとホツトキユアーフオー
ムの境界面は消泡したり、異常な硬さが発生した
りし良好な製品が得られなかつた。Example 3 As shown in Fig. 1C, when the pad material 3 that becomes the backrest is molded with hot cure foam, and the left and right tongue-shaped pad materials 2, 2 are also molded with cold cure foam, the weight after molding is However, the weight of the right side of cold cure form 2 (g) = 3500 (ml) x 0.050 (g/cm 3 ) x 1.1 ~ 1.3 = 192.5 ~ 227.5 The weight of the left side of cold cure form 2 (g) = 3500 ( ml) × 0.050 (g/cm 3 ) × 1.1 to 1.3 = 192.5 to 227.5 Weight of hot cure foam (g) = 12000 (ml) × 0.021 (g/cm 3 ) × 1.3 to 1.5 = 3276.6 to 378 In integral foaming outside of this range, the interface between the cold cure foam and the hot cure foam either defoamed or abnormal hardness occurred, making it impossible to obtain a good product.
更にはホツトキユアーフオームのライズタイム
は105秒コールドキユアーフオームのライズタイ
ムは85秒その差30秒である。注入タイミングはホ
ツトキユアーフオーム原液を30秒以前に型に注入
し次にコールドキユアーフオーム原液を注入する
ことにより良好な製品が得られたその良好な製品
が得られる範囲は±15秒以内であつた。 Furthermore, the rise time of the hot cure form is 105 seconds, and the rise time of the cold cure form is 85 seconds, a difference of 30 seconds. The injection timing was such that a good product was obtained by injecting the hot cure foam stock solution into the mold before 30 seconds, and then injecting the cold cure foam stock solution.The range in which a good product could be obtained was within ±15 seconds. It was hot.
ホツトキユアーフオーム原液を46秒以前に注入
するとサイド部に反応液が入りコールドキユアー
フオームの原液と混合されフオームが収縮した。
又、ホツトキユアーフオーム原液を14秒以前に型
に注入すると、反応性の高いコールドキユアーフ
オームがホツトキヤアーフオーム原液に入り、消
泡が発生し良好な製品が得られなかつた。 When the hot cure foam stock solution was injected before 46 seconds, the reaction solution entered the side part and mixed with the cold cure foam stock solution, causing the foam to shrink.
Furthermore, if the hot cure foam stock solution was injected into the mold before 14 seconds, the highly reactive cold cure foam would enter the hot cure foam stock solution, causing defoaming and making it impossible to obtain a good product.
以上述べたように、本発明によれば、同時発泡
されたクツシヨン体は背もたれ部等が弾性のある
ホツトキユアフオームで成形され、舌片状等のパ
ツド材が硬度の大きなコールドキユアフオームで
成形されるため、ホールド性が向上すると共に、
強度が向上するため、内部にサイドワイヤ等を埋
設する必要がない。又、軽量化も可能であり工程
も煩雑でないためコストの低廉化が可能となる等
の効果を奏する。 As described above, according to the present invention, the backrest etc. of the co-foamed cushion body are formed from elastic hot cured foam, and the tongue-shaped pad material is made of hardened cold cured foam. Because it is molded, it has improved holdability and
Since the strength is improved, there is no need to bury side wires etc. inside. In addition, it is possible to reduce the weight and the process is not complicated, so that it is possible to reduce the cost.
第１図イ，ロ，ハは成形されるシートバツクの
正面図、側面図及び平面図である。
FIGS. 1A, 1B, and 1C are a front view, a side view, and a plan view of the seat bag to be molded.
Claims (1)
的軟い発泡体とコールドキユアウレタンフオーム
からなる比較的硬い発泡体とを一体に成形した硬
さの異なる部分を有することを特徴としたクツシ
ヨン体。 ２ コールドキユアフオームが式Wc＝Vc×自由
（フリーモールド）発泡時の密度×1.1〜1.3（Vcは
成型品に対するコールドキユアフオームの占有容
積、Wcはその重量）を満足し、かつホツトキユ
アフオームが式Wh＝Vh×自由（フリーモール
ド）発泡時の密度×1.3〜1.5（Vhは成型品に対す
るホツトキユアフオームの占有容積、Whはその
重量）を満足するとともに、コールドキユアフオ
ーム及びホツトキユアフオームの各原液の注入タ
イミングをフリーモールド発泡時のライズタイム
を合せる様にし、その許容差を±15秒以内とした
ことを特徴とするクツシヨン体の発泡成形方法。[Claims] 1. It is characterized by having parts of different hardness formed by integrally molding a relatively soft foam made of hot cure urethane foam and a relatively hard foam made of cold cure urethane foam. Cushion body. 2 The cold cure foam satisfies the formula Wc = Vc x density during free mold foaming x 1.1 to 1.3 (Vc is the volume occupied by the cold cure foam relative to the molded product, Wc is its weight), and is hot. Your foam satisfies the formula Wh = Vh x density during free mold foaming x 1.3 to 1.5 (Vh is the volume occupied by the hot foam with respect to the molded product, Wh is its weight), and the cold foam and A foam molding method for a cushion body, characterized in that the timing of injection of each stock solution of hot resin foam is adjusted to match the rise time during free mold foaming, and the tolerance is within ±15 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58174701A JPS6066712A (en) | 1983-09-21 | 1983-09-21 | Cushion body and its foaming molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58174701A JPS6066712A (en) | 1983-09-21 | 1983-09-21 | Cushion body and its foaming molding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6066712A JPS6066712A (en) | 1985-04-16 |
| JPH0352997B2 true JPH0352997B2 (en) | 1991-08-13 |
Family
ID=15983151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58174701A Granted JPS6066712A (en) | 1983-09-21 | 1983-09-21 | Cushion body and its foaming molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6066712A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07106167B2 (en) * | 1986-12-01 | 1995-11-15 | 株式会社ブリヂストン | Cushion |
| CN1754914B (en) * | 2004-09-28 | 2010-05-26 | 拜耳（中国）有限公司 | Polyurethane composite material, its preparation process and use |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5147966A (en) * | 1974-10-23 | 1976-04-24 | Tokai Kogyo Co Ltd | Nan hankoshitsusokaranaru kutsushontaino dojiitsutaiseikeiho oyobi sochi |
| JPS5241677A (en) * | 1975-09-30 | 1977-03-31 | Toyo Rubber Chemical Ind Co | Method of manufacturing composite cushion material |
| JPS5241676A (en) * | 1975-09-30 | 1977-03-31 | Toyo Rubber Chemical Ind Co | Method of manufacturing composite cushion material |
| JPS5241678A (en) * | 1975-09-30 | 1977-03-31 | Toyo Rubber Chemical Ind Co | Method of manufacturing composite cushion material |
| JPS57145620A (en) * | 1981-01-23 | 1982-09-08 | Bayer Ag | Cushion for vehicle seat comprising molded parts, especially polyurethane foam having different hardness regions and production thereof |
| JPS5867426A (en) * | 1981-10-19 | 1983-04-22 | Ikeda Bussan Co Ltd | Formation of pad with multiple different hardness |
-
1983
- 1983-09-21 JP JP58174701A patent/JPS6066712A/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5147966A (en) * | 1974-10-23 | 1976-04-24 | Tokai Kogyo Co Ltd | Nan hankoshitsusokaranaru kutsushontaino dojiitsutaiseikeiho oyobi sochi |
| JPS5241677A (en) * | 1975-09-30 | 1977-03-31 | Toyo Rubber Chemical Ind Co | Method of manufacturing composite cushion material |
| JPS5241676A (en) * | 1975-09-30 | 1977-03-31 | Toyo Rubber Chemical Ind Co | Method of manufacturing composite cushion material |
| JPS5241678A (en) * | 1975-09-30 | 1977-03-31 | Toyo Rubber Chemical Ind Co | Method of manufacturing composite cushion material |
| JPS57145620A (en) * | 1981-01-23 | 1982-09-08 | Bayer Ag | Cushion for vehicle seat comprising molded parts, especially polyurethane foam having different hardness regions and production thereof |
| JPS5867426A (en) * | 1981-10-19 | 1983-04-22 | Ikeda Bussan Co Ltd | Formation of pad with multiple different hardness |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6066712A (en) | 1985-04-16 |
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