JPH02202435A - Manufacture of cushioning material - Google Patents
Manufacture of cushioning materialInfo
- Publication number
- JPH02202435A JPH02202435A JP2194889A JP2194889A JPH02202435A JP H02202435 A JPH02202435 A JP H02202435A JP 2194889 A JP2194889 A JP 2194889A JP 2194889 A JP2194889 A JP 2194889A JP H02202435 A JPH02202435 A JP H02202435A
- Authority
- JP
- Japan
- Prior art keywords
- polyurethane foam
- molded product
- closed container
- foam molded
- closed
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 title abstract description 6
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 58
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 58
- 239000002360 explosive Substances 0.000 claims abstract description 19
- 239000006260 foam Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 18
- 210000000170 cell membrane Anatomy 0.000 claims description 15
- 239000007789 gas Substances 0.000 abstract description 24
- 238000005187 foaming Methods 0.000 abstract description 8
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 239000001294 propane Substances 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 16
- 238000004880 explosion Methods 0.000 description 10
- -1 aromatic isocyanates Chemical class 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000012670 alkaline solution Substances 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010097 foam moulding Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 125000005677 ethinylene group Chemical group [*:2]C#C[*:1] 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、クッション体の製造方法に関し、特にはモ
ールド成形品の通気性を高度に向上させたクッション体
の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing a cushion body, and more particularly to a method for manufacturing a cushion body in which the air permeability of a molded product is highly improved.
（従来の技術）
自動車等の座席は、所定形状の軟質ポリウレタンフォー
ムからなるクッション体をファブリック等の表皮材で覆
ったものが広く用いられている。(Prior Art) Seats for automobiles and the like are widely used in which a cushion body made of soft polyurethane foam having a predetermined shape is covered with a skin material such as fabric.
従来そのクッション体の製造方法として、所望のキャビ
ティを設けた型によるモールド成形法が多用されている
。Conventionally, as a manufacturing method for the cushion body, a molding method using a mold provided with a desired cavity has been frequently used.
すなわち、軟質ポリウレタンフォーム原料をモールド（
発泡成形用型）のキャビティに投入し、該原料を発泡さ
せて所望のキャビティ形状からなるポリウレタンフォー
ム成形品を成形する方法である。In other words, flexible polyurethane foam raw materials are molded (
In this method, a polyurethane foam molded product having a desired cavity shape is formed by charging the raw material into a cavity of a foam molding mold and foaming the raw material.
このモールド成形法は、更にホットキュアモールド成形
法とコールドキュア成形法とに大別される。This molding method is further divided into hot cure molding method and cold cure molding method.
前者は、予熱した型の中にポリウレタン発泡原料を投入
し、発泡した後更に型を炉の中で加熱し、型キャビティ
面と接する表面部分の発泡を促進し、完結させる方法で
ある。また、後者はポリウレタン発泡原料を投入した型
を炉の中に入れることなく、型を室温またはそれよりや
や高い温度に保持しながら発泡を完結させる方法である
。特徴として前者は、セル（気孔）ｖ、の硬化速度以上
の速さで発泡ガスの圧力が大となるため、破泡して連通
気孔構造となり易いものであり、後者はセル膜の硬化が
速いため破泡しにくく連通気孔構造となりにくい点であ
る。勿論使用される原料によりかなりのバラツキがある
。The former is a method in which a polyurethane foaming raw material is put into a preheated mold, foamed, and then the mold is further heated in a furnace to promote and complete foaming of the surface portion in contact with the mold cavity surface. The latter is a method in which foaming is completed while the mold containing the polyurethane foaming raw material is maintained at room temperature or a slightly higher temperature, without placing it in a furnace. The former is characterized by the fact that the pressure of the foaming gas increases faster than the curing speed of the cells (pores) v, which tends to cause the cells to burst and form a continuous pore structure, while the latter has a rapid curing of the cell membrane. Therefore, it is difficult to break bubbles and form a continuous pore structure. Of course, there are considerable variations depending on the raw materials used.
そのため、前者は気孔の連通度が約７０％前後とかなり
通気性の良いものが得られる反面、型を加熱するため成
形品表面に皮膜が形成される欠点、更には型の加熱冷却
を必要とする欠点を有する。Therefore, the former has a pore continuity of about 70%, which means it has good air permeability, but on the other hand, it has the disadvantage that a film is formed on the surface of the molded product because the mold is heated, and it also requires heating and cooling of the mold. It has the disadvantage of
これに対し、後者は型の加熱冷却を殆ど必要としない反
面、脱型直後の成形品の気孔連通度は約２０〜３０％と
通気性が劣る欠点を有している。そのため、後者におい
ては成形品を加圧ロール間に通す等により、成形品を強
制的に変形させてセル膜を破壊すること、いわゆるクラ
ツシングが行われる。On the other hand, while the latter requires almost no heating or cooling of the mold, it has the disadvantage of poor air permeability, with the degree of pore continuity of the molded product being approximately 20 to 30% immediately after demolding. Therefore, in the latter case, the cell membrane is destroyed by forcibly deforming the molded product by passing the molded product between pressure rolls, or the like, so-called crushing.
他方、このようなポリウレタンフォーム原料として、ア
ルキレンオキサイドポリエーテルと、トルエンジイソシ
アネート等の芳香族イソシアネートが多用されているが
、前述のごとく成形直後の成形品においては、ホットキ
ュアモールド成形品、コールドキュアモールド成形品と
も、程度の差こそあれ、かなりのセル膜が存在し、通気
性が悪いきらいがある。そのため、前述のごとくクラツ
シングを必要とするものが多い。On the other hand, alkylene oxide polyethers and aromatic isocyanates such as toluene diisocyanate are often used as raw materials for polyurethane foam, but as mentioned above, in molded products immediately after molding, hot cure molded products and cold cure molded products Both molded products tend to have a considerable amount of cell membrane, albeit to varying degrees, and tend to have poor air permeability. Therefore, as mentioned above, many require crushing.
しかし、該クラツシングによっても、セル膜を完全に除
去できるものではないため、高度に通気性の良いクッシ
ョン体を得ることができなかった。However, even with this crushing, the cell membrane could not be completely removed, so a cushion body with highly breathable properties could not be obtained.
しかも、クラツシングは、軟質ポリウレタンフォー仏成
形品に大きな力を加え変形を与えることによりセル膜を
破壊°するため、セルとセルを結ぶセルの骨格部分に亀
裂が入る等、該軟質ポリウレタンフォーム成形品にかえ
って損傷を与える虞れもある。また、フレーム等を内蔵
させたフレーム−体成形クッションのようなものにおい
ては、圧縮によるクラツシングは変形の原因となるため
、クラツシングを行うことができなかった。In addition, crushing destroys the cell membrane by applying a large force and deforming the soft polyurethane foam molded product, so it may cause cracks in the cell skeleton that connects the cells, etc. There is also the risk of causing damage. Further, in the case of a frame-body molded cushion having a built-in frame or the like, crushing due to compression causes deformation, so crushing cannot be performed.
そこで、軟質ポリウレタンフォームのセル膜を除去する
方法として、該フオームをアルカリ溶液で処理する方法
（特公昭３４−８１３７号公報）、あるいは該フオーム
を密閉容器に収容し、該容器に爆発性ガスを導入して爆
発させる方法（特公昭４１−７５２号公報）が提案され
ている。Therefore, as a method for removing the cell membrane of flexible polyurethane foam, there is a method of treating the foam with an alkaline solution (Japanese Patent Publication No. 34-8137), or a method of storing the foam in a closed container and injecting explosive gas into the container. A method of introducing and detonating it (Japanese Patent Publication No. 752/1983) has been proposed.
しかし、これらの方法をクッション体の製造方法に適用
しようとすると、つぎの問題が発生するなめ、現実には
用いることができなかった。However, when trying to apply these methods to a method for manufacturing a cushion body, the following problems occur, so that they cannot be used in practice.
前者のアルカリ溶液処理にあっては、軟質ポリウレタン
フォームをアルカリ溶液に浸漬して行うため、その軟質
ポリウレタンフォームに付着したアルカリ溶液をその接
水等で洗い流す作業が必要になり、更にはその水分を乾
燥除去する作業も必要となって、余分な作業に手間取る
問題を生じる。In the former alkaline solution treatment, the flexible polyurethane foam is immersed in the alkaline solution, so it is necessary to wash off the alkaline solution adhering to the flexible polyurethane foam with water, etc. Drying and removal work is also required, creating the problem of extra time and effort.
後者の爆発処理にあっては、密閉容器内に導入された爆
発性ガスが爆発するとき同時に燃焼するため、該容器内
に入れられたポリウレタンフォーム表面が燃焼溶融し、
フオーム表面がタール状に変化することである。またそ
の時発生する熱および圧力によりポリウレタンフォーム
が変形し易いことである。In the latter explosion treatment, explosive gas introduced into a closed container burns at the same time as it explodes, so the surface of the polyurethane foam placed inside the container burns and melts.
This is the change in the foam surface to a tar-like appearance. Moreover, the polyurethane foam is easily deformed by the heat and pressure generated at that time.
（発明が解決しようとする課題）
そこでこの発明は、前記の点に鑑み、従来より通気性、
および物性の高いクッション体を、変形、損傷等を生じ
ることなく簡便に製造することのできる方法を提供しよ
うとするものである。(Problems to be Solved by the Invention) In view of the above points, the present invention has been developed to improve air permeability and
Another object of the present invention is to provide a method for easily manufacturing a cushion body with high physical properties without causing deformation, damage, or the like.
（課題を解決するための手段）
前記目的を達成するため、この発明は、モールド成形さ
れた所定形状の軟質ポリウレタンフォーム成形品を密閉
容器に収容し、その密閉容器に爆発性ガスを導入し、そ
の爆発性ガスを燃焼爆発させて前記軟質ポリウレタンフ
ォーム成形品のセル膜除去を図るに際し、該密閉容器内
面とその軟留ポリウレタンフォーム成形品表面との隙間
を、別の軟質発泡体で塞ぐことにより、軟質ポリウレタ
ンフォーム成形品の表面を溶融させることなく、また変
形を生じさせずにクッション体を製造したのである。(Means for Solving the Problems) In order to achieve the above object, the present invention stores a molded flexible polyurethane foam molded product of a predetermined shape in a closed container, introduces an explosive gas into the closed container, When the cell membrane of the flexible polyurethane foam molded product is removed by burning and detonating the explosive gas, the gap between the inner surface of the sealed container and the surface of the soft-reduced polyurethane foam molded product is closed with another flexible foam. The cushion body was manufactured without melting or deforming the surface of the flexible polyurethane foam molded product.
（作用）
密閉容器に収容された所定形状の軟質ポリウレタンフォ
ーム成形品は、その密閉容器に導入された爆発性ガスの
燃焼爆発により、セル膜が溶融あるいは破壊され、連通
度の高い通気性の優れたりッション体になる。(Function) When a flexible polyurethane foam molded product of a predetermined shape is housed in a sealed container, the cell membrane is melted or destroyed by the combustion explosion of the explosive gas introduced into the sealed container, resulting in a highly interconnected and breathable product. It becomes a cushion body.
その際、軟質ポリウレタンフォーム成形品の表面と密閉
容器内面との間にある隙間が、軟質発泡体により塞がれ
ているため、爆発性ガスの爆発によっても、その圧力は
軟質発泡体にほとんど吸収され、内蔵される軟質ポリウ
レタンフォーム成形品に変形を生じることがない。At that time, the gap between the surface of the flexible polyurethane foam molded product and the inner surface of the sealed container is closed by the soft foam, so even if an explosive gas explodes, most of the pressure will be absorbed by the soft foam. This prevents deformation of the flexible polyurethane foam molded product.
しかも、該隙間を塞ぐ軟質発泡体と軟質ポリウレタンフ
ォーム成形品とは、いずれも軟質の発泡体であるため、
物性が似通っている。そのため、該軟質ポリウレタンフ
ォーム成形品は、隙間にある軟質発泡体と一体となって
、一つの軟質発泡体として隙間なく密閉容器に収容され
ているのと同じ状態になり、前記爆発の衝撃力が一つの
軟質発泡体に均一に加わることになる。その結果、軟質
ポリウレタンフォーム成形品に均一に衝撃力が加わるこ
とになり、該軟質ポリウレタンフォーム成形品のセル膜
がそのフオーム全体に互って均一かつほぼ完全に除去さ
れることになり、通気性が高く、物性の優れたクッショ
ン体が得られる。Moreover, since the soft foam that fills the gap and the soft polyurethane foam molded product are both soft foam,
Their physical properties are similar. Therefore, the flexible polyurethane foam molded product is integrated with the soft foam in the gap, and is in the same state as if it were housed in a sealed container without any gaps as a single soft foam, and the impact force of the explosion is absorbed. It will be added uniformly to one soft foam. As a result, the impact force is uniformly applied to the flexible polyurethane foam molded product, and the cell membranes of the flexible polyurethane foam molded product are uniformly and almost completely removed over the entire foam, resulting in breathability. A cushion body with high properties and excellent physical properties can be obtained.
また、この時ポリウレタンフォーム成形品に浸透してい
る爆発性ガスが爆発により瞬間的に燃焼し、その熱でセ
ル膜が溶融して骨格に付着するため、より骨格が強化さ
れることになる。Furthermore, at this time, the explosive gas penetrating the polyurethane foam molded product is instantly combusted by the explosion, and the cell membrane melts and adheres to the skeleton due to the heat, thereby further strengthening the skeleton.
（実施例） 以下実施例について説明する。(Example) Examples will be described below.
・密閉容器
第１図はこの実施例で用いた密閉容器１０を示す断面図
である。その密閉容器１０は、１００■Ｘ １００ＧＩ
ＩＸ３０ＣＩ１１の長方形外形をした金属製箱体からな
り、上半体１２と下半体１４から構成される。- Closed Container FIG. 1 is a sectional view showing the closed container 10 used in this example. The airtight container 10 is 100■X 100GI
It consists of a metal box with a rectangular outer shape of IX30CI11, and is composed of an upper half 12 and a lower half 14.
上半体１２と下半体１４は、クランプ１６により閉合さ
れて、内部に軟質ポリウレタンフォーム成形品を収容す
るための収納用空間１日を形成する。またその上半体１
２あるいは下半体１４の所定部には、前記収納用空間１
８の空気を排出するための排出管２０と、収納用空間１
８に爆発性ガスを導入するための導入管２２が、該収納
用空間１８に開口して設けられ、さらには該爆発性ガス
に点火するための点火用プラグ２４が先端を密閉容器１
０内に突出させて設けられている。The upper half 12 and the lower half 14 are closed by clamps 16 to form a storage space for housing a flexible polyurethane foam molding therein. Also, its upper half 1
2 or a predetermined portion of the lower half body 14 has the storage space 1
8, an exhaust pipe 20 for discharging air, and a storage space 1
An introduction pipe 22 for introducing explosive gas into the container 8 is provided to open into the storage space 18, and an ignition plug 24 for igniting the explosive gas has its tip connected to the closed container 1.
It is provided to protrude inside 0.
その点火用プラグ２４は、ガソリンエンジンのプラグ同
様導線により電源に接続され、その回路を閉じることに
より、点火用プラグ２４の先端で火花を生じるようにな
っている。The ignition plug 24 is connected to a power source by a conductor like a gasoline engine plug, and by closing the circuit, a spark is generated at the tip of the ignition plug 24.
・座席用クッション体の製造
二種類の配合からなるポリウレタンフォーム原料を調製
し、各々の原料から次のようにして二種類の座席用クッ
ション体を製造した。-Manufacture of seat cushion bodies Polyurethane foam raw materials having two types of formulations were prepared, and two types of seat cushion bodies were manufactured from each raw material in the following manner.
まず、所望の製品形状からなるモールドのキャビティ内
に、ポリウレタンフォーム原料を投入し、発泡させて、
キャビティと同一形状からなる軟質ポリウレタンフォー
ム成形品をモールド成形した。First, a polyurethane foam raw material is put into the cavity of a mold that has the desired product shape, and is foamed.
A flexible polyurethane foam molded product having the same shape as the cavity was molded.
次に、その軟質ポリウレタンフォーム成形品２１をモー
ルドがら取り出し、第１図に示した密ｍ容器１０の収納
用空間１８に収容した。Next, the flexible polyurethane foam molded product 21 was taken out from the mold and housed in the storage space 18 of the compact container 10 shown in FIG.
他方、前記軟質ポリウレタンフォーム成形品２１の形成
原料と同じ配合原料がら、オーブン発泡により軟質ポリ
ウレタンフォームブロックを形成した。そしてそのフオ
ームブロックを裁断して、前記密閉容器内の軟質ポリウ
レタンフォーム成形品２１と密閉容器１０内面間の隙間
２３形状に合致した形状の軟質発泡体（図示せず）を形
成し、その軟質発泡体を前記密閉容器内の隙間２３に収
容して隙間２３を塞ぎ、密閉容器の上下半休１２．１４
を閉じた。On the other hand, a flexible polyurethane foam block was formed by oven foaming using the same raw materials as those for forming the flexible polyurethane foam molded article 21. Then, the foam block is cut to form a soft foam (not shown) having a shape that matches the shape of the gap 23 between the soft polyurethane foam molded product 21 in the sealed container and the inner surface of the sealed container 10, and the soft foam The body is accommodated in the gap 23 in the airtight container, the gap 23 is closed, and the airtight container is half-closed 12.14.
closed.
次に、該密閉容器１０内の空気を前記排出管２０に連結
した真空ポンプ（図示せず）で吸い出して、該密閉容器
１０内の圧力が約４０ｍｍ水銀柱になった時点で排出管
２０を閘じた。その後、室温の酸素とプロパンガスが体
積比で１＝５に混合してなる爆発性ガスを、導入管２２
から密閉容器１０内に供給し、密閉容器１０内の圧力が
２００ｍｍ水銀柱まで上昇した時点でその導入管２２を
閉じた。Next, the air inside the airtight container 10 is sucked out by a vacuum pump (not shown) connected to the exhaust pipe 20, and when the pressure inside the airtight container 10 reaches about 40 mm of mercury, the exhaust pipe 20 is closed. It was. Thereafter, an explosive gas consisting of a mixture of oxygen and propane gas at room temperature in a volume ratio of 1=5 is introduced into the inlet pipe 22.
was supplied into the closed container 10, and when the pressure inside the closed container 10 rose to 200 mm of mercury, the introduction tube 22 was closed.
そして、点火用プラグ２４に火花を発生させることによ
り、爆発性ガスを燃焼爆発させ、軟質ポリウレタンフォ
ーム成形品のセル膜除去を行った。Then, by generating a spark from the ignition plug 24, the explosive gas was combusted and exploded, and the cell membrane of the flexible polyurethane foam molded product was removed.
燃焼爆発の終了後、排出管２０と導入管２２を開けてそ
の両管２０．２２より空気を密閉容器１ｏ内に供給し、
該密閉容器内１０を新鮮な空気で満たし゛た。その後、
前記燃焼爆発によってセル膜の除去された軟質ポリウレ
タンフォーム成形品からなる座席用クッション体を取り
出した。After the combustion explosion ends, the exhaust pipe 20 and the inlet pipe 22 are opened and air is supplied into the closed container 1o from both pipes 20 and 22,
The airtight container 10 was filled with fresh air. after that,
A seat cushion body made of a soft polyurethane foam molded product from which the cell membrane had been removed by the combustion explosion was taken out.
得られた座席用クッション体は変形のないもので、何ら
後処理を必要としなかった。The obtained seat cushion body was free from deformation and did not require any post-treatment.
又、比較のために、前記爆発処理前の軟質ポリウレタン
フォーム成形品と同一の軟質ポリウレタンフォーム成形
品（前記原料が異なる二種類）を形成し、その軟質ポリ
ウレタンフォーム成形品に従来と同様の加圧、圧縮によ
るクラツシングを施して、座席用クッション体（比較例
）を製造した。For comparison, we formed flexible polyurethane foam molded products (two types of different raw materials) that were the same as the flexible polyurethane foam molded product before the explosion treatment, and applied the same pressure to the flexible polyurethane foam molded products as before. A seat cushion body (comparative example) was manufactured by applying compression crushing.
そして実施例で得た二種類（原料が異なる）の座席用ク
ッション体と、比較例で得た二種類（原料が異なる）の
座席用クッション体について物性を調べ、その結果を次
表に示した。The physical properties of the two types of seat cushion bodies obtained in the Examples (different raw materials) and the two types of seat cushion bodies obtained in the Comparative Examples (different raw materials) were investigated, and the results are shown in the table below. .
口ＩＪＩｓ Ｋ６４０１
（”ＪＡＳＯＭ２Ｏ３
”ＪＩＳ Ｋ６３０１
（テ’ＪＩＳ Ｋ６４０１
”’ＪＩＳ Ｋ６４０１
”’ＪＡＳＯＭ２Ｏ３
１′１ＪＩｓ Ｋ６４０１
”’ＡＳＴＭ Ｄ１５６４
なお、前記密閉容器と軟質ポリウレタンフォーム成形品
との隙間を塞ぐ軟質発泡体は、次の手段により形成して
もよい。口IJIs K6401 ("JASOM2O3" JIS K6301 (TE'JIS K6401 "'JIS K6401"''JASOM2O3 1'1JIs K6401 "''ASTM D1564) Furthermore, the flexible foam that closes the gap between the airtight container and the flexible polyurethane foam molded product is , It may be formed by the following means.
すなわち、前記軟質ポリウレタンフォーム成形品をポリ
エチレンフィルムで包んだ後、密閉容器１０の内面形状
と同じ形状からなるキャビティを有するモールドの内底
面に装置して、そのキャビティに軟質発泡体原料を注入
し発泡させることにより、ポリエチレンフィルムで包ん
だ軟質ボリウレタ・ンフォーム成形品の周囲に軟質発泡
体を形成するのである。この°ようにして得られた軟質
発泡体は、軟質ポリウレタンフォーム成形品と密閉容器
内面との間の隙間形状に合致した形状からなる。That is, after the flexible polyurethane foam molded product is wrapped in a polyethylene film, it is placed in the inner bottom surface of a mold having a cavity having the same shape as the inner surface shape of the closed container 10, and the flexible foam raw material is injected into the cavity and foamed. By doing so, a flexible foam is formed around the flexible polyurethane foam molded product wrapped in polyethylene film. The soft foam thus obtained has a shape that matches the shape of the gap between the soft polyurethane foam molded product and the inner surface of the closed container.
そしてその軟質発泡体は、後にポリエチレンフィルムを
除去した軟質ポリウレタンフォーム成形品と共に密閉容
器内に収容される。The flexible foam is then housed in a closed container together with a flexible polyurethane foam molded product from which the polyethylene film has been removed.
更に、上記ポリエチレンフィルムに代えて、軟質発泡体
原料の含浸を防止する樹脂、例えば塗料で軟質ミリウレ
タンフオーム成形品をコーティングし、その上に雛型剤
処理を行って、前記と同様にして該軟質ポリウレタンフ
ォーム成形品の周囲に軟質発泡体を形成してもよい。Furthermore, instead of the above-mentioned polyethylene film, a flexible milliurethane foam molded product is coated with a resin, such as a paint, that prevents impregnation of the flexible foam raw material, and a template agent treatment is applied thereon, and the molded product is coated in the same manner as described above. A flexible foam may be formed around the flexible polyurethane foam molded article.
また、上記隙間を塞ぐ軟質発泡体は、軟質ポリウレタン
フォーム成形品と同一のものとする必要はないが、熱伝
播性、強度、伸びにおいて軟質ポリウレタンフォーム成
形品と近似するものを選択するのが、爆発の影響を均一
に軟質ポリウレタンフォームに伝える上で好ましい。In addition, the flexible foam that fills the gap does not need to be the same as the flexible polyurethane foam molded product, but it is best to select one that is similar to the flexible polyurethane foam molded product in terms of heat spreadability, strength, and elongation. This is preferable in that the effects of the explosion are uniformly transmitted to the flexible polyurethane foam.
一方、爆発性ガスは上記のものに限らず、水素ガス、メ
タンガス、エタンガス、エチレンガス、アセチレンガス
等と酸素との混合ガスでもよい。On the other hand, the explosive gas is not limited to those mentioned above, and may be a mixed gas of hydrogen gas, methane gas, ethane gas, ethylene gas, acetylene gas, etc., and oxygen.
（効果）
この発明は、モールド成形した軟質ポリウレタンフォー
ム成形品と、該軟質ポリウレタンフォーム成形品を収容
した密閉容器内面との間の隙間を軟質発泡体で塞ぎ、そ
の密閉容器内に導入した爆発性ガスの爆発により、軟質
ポリウレタンフォーム成形品のセル膜をほぼ完全に除去
してクッション体を製造するものである。(Effects) The present invention provides a method for filling the gap between a molded flexible polyurethane foam product and the inner surface of a closed container containing the flexible polyurethane foam molded product, and introducing an explosive material into the closed container. A cushion body is manufactured by almost completely removing the cell membrane of a flexible polyurethane foam molded product using a gas explosion.
そのため、前記隙間を塞ぐ軟質発泡体により、成形品の
表面燃焼を防ぐとともに、爆発変形圧力を該発泡体によ
って吸収し、変形のないクッション体を、後処理の要な
く得ることができるようになった。Therefore, the soft foam that fills the gap prevents surface combustion of the molded product, and the foam absorbs the explosive deformation pressure, making it possible to obtain a cushion body without deformation without the need for post-processing. Ta.
また、爆発の影響を軟質ポリウレタンフォーム成形品に
均一に加えられるようになったため、満遍なく軟質ポリ
ウレタンフォーム成形品のセル膜を除去することができ
、得られるクッション体の物性をより良好なものとする
ことができるようになった。In addition, since the explosion effect can now be applied uniformly to the flexible polyurethane foam molded product, the cell membrane of the flexible polyurethane foam molded product can be evenly removed, improving the physical properties of the resulting cushion body. Now I can do it.
第１図はこの発明の実施例に用いた密閉容器の断面図で
ある。
１０：密閉容器、
２１：軟質ポリウレタンフォーム成形品、２３：隙間FIG. 1 is a sectional view of a closed container used in an embodiment of the present invention. 10: Airtight container, 21: Flexible polyurethane foam molded product, 23: Gap
Claims (1)
ム成形品を密閉容器に収容し、該密閉容器内面とその軟
質ポリウレタンフォーム成形品表面との隙間を軟質発泡
体で塞ぎ、その密閉容器に爆発性ガスを導入し、その爆
発性ガスを燃焼爆発させて前記軟質ポリウレタンフォー
ム成形品のセル膜除去を図ることを特徴とする、クッシ
ョン体の製造方法。A molded flexible polyurethane foam molded product of a predetermined shape is housed in a sealed container, the gap between the inner surface of the sealed container and the surface of the flexible polyurethane foam molded product is closed with a soft foam, and explosive gas is introduced into the sealed container. A method for manufacturing a cushion body, comprising: removing the cell membrane of the flexible polyurethane foam molded product by burning and exploding the explosive gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1021948A JPH0622918B2 (en) | 1989-01-31 | 1989-01-31 | Cushion body manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1021948A JPH0622918B2 (en) | 1989-01-31 | 1989-01-31 | Cushion body manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02202435A true JPH02202435A (en) | 1990-08-10 |
| JPH0622918B2 JPH0622918B2 (en) | 1994-03-30 |
Family
ID=12069284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1021948A Expired - Fee Related JPH0622918B2 (en) | 1989-01-31 | 1989-01-31 | Cushion body manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0622918B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004329706A (en) * | 2003-05-09 | 2004-11-25 | Inoac Corp | Mattress |
| CN102794909A (en) * | 2012-08-01 | 2012-11-28 | 桐乡市恒发海绵有限公司 | Cell opening method for foam sponge |
| CN109984394A (en) * | 2018-01-02 | 2019-07-09 | 杨佳烽 | The sponge holes method of full-automatic holes machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62205137A (en) * | 1986-03-05 | 1987-09-09 | Nippon Denso Co Ltd | Provision of foam with net structure |
-
1989
- 1989-01-31 JP JP1021948A patent/JPH0622918B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62205137A (en) * | 1986-03-05 | 1987-09-09 | Nippon Denso Co Ltd | Provision of foam with net structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004329706A (en) * | 2003-05-09 | 2004-11-25 | Inoac Corp | Mattress |
| CN102794909A (en) * | 2012-08-01 | 2012-11-28 | 桐乡市恒发海绵有限公司 | Cell opening method for foam sponge |
| CN102794909B (en) * | 2012-08-01 | 2015-12-02 | 桐乡市恒发海绵有限公司 | The boring method of foam sponge |
| CN109984394A (en) * | 2018-01-02 | 2019-07-09 | 杨佳烽 | The sponge holes method of full-automatic holes machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0622918B2 (en) | 1994-03-30 |
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