JP2002138126A - Elastic piece - Google Patents
Elastic pieceInfo
- Publication number
- JP2002138126A JP2002138126A JP2000333666A JP2000333666A JP2002138126A JP 2002138126 A JP2002138126 A JP 2002138126A JP 2000333666 A JP2000333666 A JP 2000333666A JP 2000333666 A JP2000333666 A JP 2000333666A JP 2002138126 A JP2002138126 A JP 2002138126A
- Authority
- JP
- Japan
- Prior art keywords
- elastic member
- range
- coating layer
- hardness
- compression set
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、弾性部材に関
し、更に詳細には、各種の家具や、機器等の被着体と床
等との間に介在し、該床面等の損傷防止や被着体の滑べ
り止めに好適に使用し得る、所謂弾性足に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic member, and more particularly, to an elastic member interposed between an adherend of various furniture and equipment and a floor or the like to prevent damage to the floor or the like and to prevent damage to the floor. The present invention relates to a so-called elastic foot which can be suitably used to prevent slippage of a body.
【０００２】[0002]
【従来の技術】一般家庭の各種家具や、各事業所におか
れるコピー機、製造装置に代表される各種機器等の重量
ある被着体を、殊に対策も施さず床等に設置した場合、
これら被着体の重量による凹み等の傷跡、作動等による
位置ズレおよび振動等の周囲環境への悪影響が発生す
る。これらの問題を防止するため、ゴム等の弾性部材が
被着体の底面部に貼着される等して、該被着体と床等の
接地面との間に介在されている。2. Description of the Related Art When heavy adherends such as various kinds of furniture in general households, copiers in various offices, and various kinds of equipment such as manufacturing equipment are installed on a floor or the like without any particular measures. ,
Scars such as dents due to the weight of the adherend, positional shifts due to operation and the like, and adverse effects on the surrounding environment such as vibration occur. In order to prevent these problems, an elastic member such as rubber is adhered to the bottom surface of the adherend or the like, and is interposed between the adherend and the ground surface such as the floor.
【０００３】[0003]
【発明が解決すべき課題】前記弾性部材としては、弾性
を発現するゴムまたは樹脂等の発泡体や、ソリッド
体が好適に利用されている。しかし発泡体の場合、高
荷重・長期間といった使用条件下において、つぶれやへ
たりといった形状的な経年変化、すなわち圧縮永久歪み
の点で難点が指摘される。またソリッド体の場合で
は、前記発泡体に較べて経年変化に対する耐久性が高い
一方で、その高い硬度故に防震性が悪く、重量も嵩む欠
点が指摘される。更に脆性も低く、小さなクラック等が
原因で裂ける、欠けるといった形状欠陥も生じ易い。As the elastic member, a foam such as rubber or resin exhibiting elasticity, or a solid body is suitably used. However, in the case of the foam, it is pointed out that there is a problem in terms of shape-related secular change such as crushing and sagging, that is, compression set under use conditions such as high load and long term. Further, in the case of a solid body, it is pointed out that while its durability against aging is higher than that of the foam, its high hardness results in poor seismic resistance and an increase in weight. Furthermore, the brittleness is low, and a shape defect such as tearing or chipping due to a small crack or the like is likely to occur.
【０００４】前述の各種特性を満足する弾性部材とし
て、所定以上の硬度を有する、例えばポリウレタン発泡
体の採用が考えられる。しかるにこの場合、硬度を調整
する架橋剤の過剰添加により高まった硬度のために脆く
なり、結果として前述のソリッド体と同様の欠点を内
在することになる。As an elastic member that satisfies the above-mentioned various characteristics, it is conceivable to employ, for example, a polyurethane foam having a predetermined hardness or more. In this case, however, the brittleness is increased due to the increased hardness due to the excessive addition of the crosslinking agent for adjusting the hardness. As a result, the same disadvantages as those of the solid body described above are inherent.
【０００５】更にこれまで述べた発泡体またはソリ
ッド体の何れであっても、硬度と摩擦係数とは通常、反
比例するので、前記弾性部材が取り付けられる被着体の
作動時振動等による位置ズレの滑べり止め防止が充分で
はなかった。Further, since the hardness and the coefficient of friction are usually inversely proportional to any of the foam and the solid described above, the displacement of the adherend to which the elastic member is attached due to vibration during operation or the like is caused. Slip prevention was not enough.
【０００６】[0006]
【発明の目的】この発明は、従来の弾性部材に内在して
いる前記問題に鑑み、これを好適に解決するべく提案さ
れたものであって、主原料としてのポリオール成分およ
びイソシアネート成分と、添加剤等の各種副原料とを混
合し、メカニカルフロス法により得られたポリウレタン
発泡体を弾性部材として使用することで、硬度、圧縮永
久歪みおよび脆性といった各種物性に優れた弾性部材を
提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention has been proposed in view of the above problems inherent in conventional elastic members, and has been proposed to suitably solve the problem. By mixing various auxiliary raw materials such as an agent and using a polyurethane foam obtained by a mechanical floss method as an elastic member, it is possible to provide an elastic member excellent in various physical properties such as hardness, compression set and brittleness. Aim.
【０００７】[0007]
【課題を解決するための手段】前記課題を克服し、所期
の目的を達成するため本願の発明に係る弾性部材は、主
原料であるポリオール成分およびイソシアネート成分
と、各種の副原料と、造泡用気体とを使用し、メカニカ
ルフロス法を実施して得られるポリウレタン発泡体の弾
性部材であって、前記メカニカルフロス法の実施によ
り、その物性を密度４００〜６００ｋｇ/ｍ3およびアス
カーＣ硬度７０〜９５で、かつ圧縮永久歪み１０％以下
に設定したことを特徴とする。In order to overcome the above-mentioned problems and achieve the intended object, an elastic member according to the present invention comprises a polyol component and an isocyanate component as main raw materials, various auxiliary raw materials, use the bubble gas, an elastic member of a polyurethane foam obtained by carrying out the mechanical froth method, wherein the implementation of the mechanical froth method, a density 400~600kg / m 3 and the Asker C hardness of 70 and the physical properties thereof ９５95 and a compression set of 10% or less.
【０００８】[0008]
【発明の実施の形態】次に、本発明に係る弾性部材につ
き、好適な実施例を挙げて、添付図面を参照しながら以
下説明する。本願発明者は弾性部体の物性を、密度：
４００〜６００ｋｇ/ｍ3、硬度：アスカーＣ硬度で７
０〜９５°、圧縮永久歪み：１０％以下、とすること
で、本願が目的が達成されることを知見したものであ
る。また脆性が一定以上とであるとより好適であり、
その値は経験的事実から機械的強度を示す引張強度がＪ
ＩＳ Ｋ-６２５１に規定される測定方法を用いた場合
で、３.０ＭＰａ以上程度であることを併せて知見し
た。更に床等の接地面側に所定厚さのコーティング層を
設けることで、摩擦係数を制御し得るようにしたもの
である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an elastic member according to the present invention will be described below with reference to the accompanying drawings by way of preferred embodiments. The inventor of the present application determined the physical properties of the elastic body, the density:
400-600 kg / m 3 , hardness: Asker C hardness 7
It has been found that the object is achieved by setting the compression set at 0 to 95 ° and the compression set: 10% or less. It is more preferable that the brittleness is not less than a certain value,
The value is based on empirical facts that the tensile strength indicating mechanical strength is J
It was also found that when the measurement method specified in IS K-6251 was used, it was about 3.0 MPa or more. Further, by providing a coating layer of a predetermined thickness on the ground surface side such as a floor, the coefficient of friction can be controlled.
【０００９】図１は、本発明の好適な実施例に係る弾性
部材を使用した被着体Ｈと、接地面とを示す断面図であ
って、この弾性部材１０は、所定のポリオール成分およ
びイソシアネート成分を主原料とし、これに各種添加物
等の副原料および増泡用気体を混合して製造され、この
弾性部材１０の底面部には所定厚さのコーティング層１
４が設けられる。また前記弾性部材１０の被着体Ｈ側に
は、該被着体Ｈへの取り付けに際して使用される、例え
ば接着剤を層状に付与した粘着層１６が設けられてい
る。なお弾性部材１０の実際の形状は、一般に被着体Ｈ
の底面部に貼り付けて使用される、厚みが〜１０ｍｍ程
度のシート形状物であることが殆どであるが、使用状
態、場所および被着体Ｈによって様々な形状の該弾性部
材が採用可能である。FIG. 1 is a cross-sectional view showing an adherend H using an elastic member according to a preferred embodiment of the present invention and a grounding surface. The elastic member 10 has a predetermined polyol component and isocyanate. The elastic member 10 is manufactured by mixing the components as main raw materials with auxiliary raw materials such as various additives and a gas for increasing foam.
4 are provided. Further, on the adherend H side of the elastic member 10, there is provided a pressure-sensitive adhesive layer 16, for example, provided with an adhesive in a layer form, which is used when the elastic member 10 is attached to the adherend H. Note that the actual shape of the elastic member 10 is generally
In most cases, it is a sheet-shaped object having a thickness of about 10 mm which is used by being adhered to the bottom surface of the above. However, the elastic member having various shapes can be adopted depending on a use state, a place and an adherend H. is there.
【００１０】前記弾性部材１０には、従来技術として公
知であるメカニカルフロス法(mechanical frothing(機
械的泡立て))により作製されたポリウレタン発泡体が使
用される。前記メカニカルフロス法については、例えば
特公昭５３−８７３５号公報に詳細にその内容が記載さ
れている。As the elastic member 10, a polyurethane foam produced by a mechanical frothing (mechanical frothing) known as a conventional technique is used. The details of the mechanical floss method are described in, for example, Japanese Patent Publication No. 53-8735.
【００１１】前述のメカニカルフロス法により得られる
弾性部材１０に求められる各物性値は、密度が４００
〜６００ｋｇ/ｍ3、硬度がアスカーＣ硬度で７０〜９
５°、圧縮永久歪みが１０％以下であり、更に脆性
を表す引張強度が３.０ＭＰａ以上程度である。この各
物性値を達成することで、接地面の損傷を防止すると共
に、所望の防震性を発揮する弾性部材１０を得ることが
できる。The physical properties required for the elastic member 10 obtained by the mechanical floss method described above are as follows.
６００600 kg / m 3 , hardness is 70-9 in Asker C hardness
5 °, compression set is 10% or less, and tensile strength indicating brittleness is about 3.0 MPa or more. By achieving these physical property values, it is possible to prevent the ground contact surface from being damaged and to obtain the elastic member 10 exhibiting the desired earthquake-proof property.
【００１２】前記弾性部材１０を製造するに際して使用
される主原料は、前述した如く、通常のポリウレタン発
泡体と同様のポリオール成分およびイソシアネート成分
であり、これに必要に応じて、発泡剤、整泡剤、架橋
剤、可塑剤、触媒、吸湿材および／または骨材(核材)の
如きのフィラー等の各種副原料が所要量混合される。ま
たメカニカルフロス法において発泡率を決定する不活性
ガス等の造泡用気体の混合割合は、前記各原料の総体積
１００に対して、５０〜２００体積％程度が好適であ
る。The main raw materials used for producing the elastic member 10 are, as described above, the same polyol component and isocyanate component as those of ordinary polyurethane foams, and if necessary, a foaming agent and a foam stabilizer. Various auxiliary materials such as fillers such as agents, crosslinking agents, plasticizers, catalysts, hygroscopic materials and / or aggregates (core materials) are mixed in required amounts. The mixing ratio of a foaming gas such as an inert gas that determines the foaming ratio in the mechanical floss method is preferably about 50 to 200% by volume with respect to the total volume 100 of each raw material.
【００１３】前記ポリオール成分としては、ポリエーテ
ルポリオールおよび／またはポリエステルポリオールが
好適であり、イソシアネート成分としては、トルエンジ
フェニルイソシアネート(ＴＤＩ)プレポリマー、メチレ
ンジフェニルジイソシアネート(ＭＤＩ)、クルードＭＤ
Ｉ、ポリメリックＭＤＩ、ウレトジオン変性ＭＤＩまた
はカルボジイミド変性ＭＤＩ等が好適に使用されるが、
通常使用する一般的なポリオール成分や、イソシアネー
ト成分も採用可能である。また前記造泡用気体として
は、前述のポリオール成分およびイソシアネート成分の
反応等に悪影響を及ぼさない、例えば乾燥空気または窒
素等の不活性ガスが好適である。The polyol component is preferably a polyether polyol and / or a polyester polyol, and the isocyanate components are toluene diphenyl isocyanate (TDI) prepolymer, methylene diphenyl diisocyanate (MDI), crude MD
I, polymeric MDI, uretdione-modified MDI or carbodiimide-modified MDI are preferably used,
Commonly used general polyol components and isocyanate components can also be employed. Further, as the foaming gas, an inert gas such as dry air or nitrogen which does not adversely affect the reaction between the polyol component and the isocyanate component described above is preferable.
【００１４】前述の各物性値を達成するために必要とさ
れる前記各原料の混合割合は、ポリオール成分が２０〜
４５ｗｔ％、イソシアネート成分が２５〜３５ｗｔ％で
あり、副原料については整泡剤が２〜３ｗｔ％、架橋剤
が８〜１５ｗｔ％、触媒が３〜５ｗｔ％、吸湿材が０〜
３ｗｔ％、フィラーが１０〜２０ｗｔ％の範囲内に設定
される。なおここで混合割合が明示さてれいない副原料
については、前述の物性の発現に対して大きな影響を与
えるものではないので、製造される弾性部材１０のその
他の物性や製造工程上の都合等により、適宜決定すれば
よい。The mixing ratio of each of the above-mentioned raw materials required to achieve the above-mentioned respective physical property values is such that the polyol component is 20 to
45 wt%, isocyanate component is 25 to 35 wt%, and as the auxiliary material, foam stabilizer is 2 to 3 wt%, crosslinker is 8 to 15 wt%, catalyst is 3 to 5 wt%, and moisture absorbent is 0 to 0 wt%.
The content is set in the range of 3 wt% and the filler is in the range of 10 to 20 wt%. In addition, since the auxiliary raw materials for which the mixing ratio is not specified do not have a great influence on the expression of the above-mentioned physical properties, the auxiliary raw materials are not affected by the other physical properties of the elastic member 10 to be manufactured and the convenience in the manufacturing process. May be determined as appropriate.
【００１５】前述の物性値の一つである密度は、原料
の総体積に対して混合される造泡用気体の総量や、副原
料の一つであるフィラーの混合割合に主に依存してい
る。前記造泡用気体の総量は、前述の通り５０〜２００
体積％の範囲より少ないと得られる弾性部材１０の密度
が高くなり、多いと小さくなる。また前記フィラーの混
合割合が１０〜２０ｗｔ％の範囲外であると、混合され
た前記造泡用気体が弾性部材１０内に定着せず、構造外
に排出されてしまう畏れがある。The density, which is one of the above physical properties, mainly depends on the total amount of foaming gas mixed with the total volume of the raw material and the mixing ratio of the filler, which is one of the auxiliary raw materials. I have. The total amount of the foaming gas is 50 to 200 as described above.
When the amount is less than the range of the volume%, the density of the obtained elastic member 10 increases, and when the amount is large, the density decreases. If the mixing ratio of the filler is out of the range of 10 to 20 wt%, the mixed foaming gas may not be fixed in the elastic member 10 and may be discharged out of the structure.
【００１６】また硬度と、この硬度と密接に関係する
脆性については、前記ポリオール成分およびイソシア
ネート成分の混合割合や分子量等と、整泡剤、架橋剤お
よびフィラーの混合割合や種類と、前述の密度とに主に
依存している。The hardness and the brittleness which is closely related to the hardness include the mixing ratio and the molecular weight of the polyol component and the isocyanate component, the mixing ratio and type of the foam stabilizer, the crosslinking agent and the filler, and the density described above. And mainly rely on.
【００１７】殊に前記架橋剤については、その混合割合
が８ｗｔ％未満であると、前記弾性部材１０内に架橋構
造が充分に形成されず硬度が低くなり、また１５ｗｔ％
を越える場合には、硬度が充分となる一方で脆くなって
しまうので留意が必要である。また前記架橋剤について
は、その種類も重要な要素であり、例えばジプロピレン
グリコール(以下ＤＰＧと云う)の如き低分子量ポリオー
ルが好適に使用される一方、３-メチル-１,５-ペンタン
ジオール(以下ＭＰＤと云う)や、２-メチル-１,３-プロ
バンタンジオール(以下ＭＰＤｉｏｌと云う)の如き低分
子量ジオールの使用では前述の混合割合の範囲内であっ
ても、硬度と表裏の関係にある脆性に問題が生じる。In particular, if the mixing ratio of the crosslinking agent is less than 8% by weight, the crosslinking structure is not sufficiently formed in the elastic member 10 and the hardness becomes low, and the crosslinking agent becomes 15% by weight.
In the case where the value exceeds, attention must be paid to the fact that the hardness becomes sufficient while the material becomes brittle. The type of the cross-linking agent is also an important factor. For example, a low-molecular-weight polyol such as dipropylene glycol (hereinafter, referred to as DPG) is preferably used, while 3-methyl-1,5-pentanediol ( When a low molecular weight diol such as 2-methyl-1,3-propantanediol (hereinafter referred to as MPDiol) is used, the relationship between the hardness and the front and back may be reduced even when the mixing ratio is within the above range. Some brittleness causes problems.
【００１８】また前記フィラーの混合割合が１０〜２０
ｗｔ％の範囲外であると、混合された前記造泡用気体が
弾性部材１０内で好適な径を有する気泡(微細なセル骨
格)が得られなくなる畏れがある。すなわち原料および
造泡用気体の混合割合が同一であっても、該造泡用気体
が原料内で非常に大きな気泡(ボイドと云う)になり、構
造的な強度等を好適な範囲内に維持し得なくなってしま
う。本実施例においては、例えば三水酸化アルミナの如
き粒径が所定の範囲に制御可能であって、前記ポリオー
ル成分およびイソシアネート成分の反応等に影響を及ぼ
さない物質が好適である。The mixing ratio of the filler is from 10 to 20.
If the amount is out of the range of wt%, the mixed gas for foaming may not be able to obtain bubbles (fine cell skeleton) having a suitable diameter in the elastic member 10. That is, even if the mixing ratio of the raw material and the foaming gas is the same, the foaming gas becomes very large bubbles (called voids) in the raw material, and the structural strength and the like are maintained within a suitable range. I can't do it. In this embodiment, a substance such as alumina trihydroxide, whose particle size can be controlled within a predetermined range, and which does not affect the reaction between the polyol component and the isocyanate component, is preferred.
【００１９】更に前記整泡剤の混合割合が２〜３ｗｔ％
の範囲外であると、混合された前記造泡用気体が弾性部
材１０内で好適な気泡構造(独立気泡構造または連通気
泡構造)とならなくなってしまう畏れがある。これは同
一の密度であっても、構造に起因する強度が変化してし
まうためである。また整泡剤の種類については、殊にポ
リジメチルシロキサンまたはポリオキシアルキレン等の
ノニオン系界面活性剤が好適である。なお前記整泡剤に
よる気泡構造の変化は、圧縮永久歪みについても影響
を与える。これは前記気泡構造の違いにより、該気泡構
造内の造泡用気体の出入りの自由度が変化してしまうた
めである。Further, the mixing ratio of the foam stabilizer is 2-3 wt%.
If the ratio is out of the range, the mixed foaming gas may not be a suitable cell structure (closed cell structure or open cell structure) in the elastic member 10. This is because the strength due to the structure changes even at the same density. As for the type of the foam stabilizer, a nonionic surfactant such as polydimethylsiloxane or polyoxyalkylene is particularly preferred. The change in the cell structure caused by the foam stabilizer affects the compression set. This is because the degree of freedom of the gas for foaming in and out of the bubble structure changes depending on the difference in the bubble structure.
【００２０】前述のポリオール成分およびイソシアネー
ト成分の混合割合についても、その混合割合が範囲外と
なる場合には、弾性部材１０の各物性値を夫々好適な範
囲内とすることが困難となるので留意が必要である。こ
の他の要素として、前記ポリオール成分の数平均分子量
を変化させたり、分子的柔和性を有するイソシアネート
の使用等によっても前記各物性を変化させ得る。If the mixing ratio of the above-mentioned polyol component and isocyanate component is out of the range, it is difficult to set each physical property value of the elastic member 10 to a preferable range. is necessary. As other factors, the physical properties can also be changed by changing the number average molecular weight of the polyol component or using an isocyanate having molecular softness.
【００２１】前記コーティング層１４は、前記弾性部材
１０の底面部、すなわち床等の接地面との接触部位とな
るものであり、重量物の滑べり等による位置ズレを防止
する役割を持つ。そのため前記コーティング層１４に求
められる物性は、前記弾性部材１０自体のそれと比較し
て少なくとも５〜６倍程度、数値的には１.５〜５.０程
度となる摩擦係数であり、これは該コーティング層１
４を所定の材質により、所定厚さとすることで達成され
る。なお前記コーティング層１４の付与は、前記弾性部
材１０の使用条件、すなわち前記被着体Ｈの重量が大き
く、前述の位置ズレが殆ど生じない状態においては必須
ではない。The coating layer 14 serves as a contact portion with the bottom surface of the elastic member 10, that is, a contact portion with a ground surface such as a floor, and has a role of preventing displacement of a heavy object due to slippage or the like. Therefore, the physical properties required for the coating layer 14 are at least about 5 to 6 times, and numerically about 1.5 to 5.0 times, the friction coefficient of the elastic member 10 itself. Coating layer 1
This is achieved by setting 4 to a predetermined thickness with a predetermined material. The application of the coating layer 14 is not essential under the conditions of use of the elastic member 10, that is, under the condition that the weight of the adherend H is large and the above-described positional displacement hardly occurs.
【００２２】前記コーティング層１４の厚さは、該コー
ティング層１４付与完了時、すなわち乾燥完了時におい
て１０〜１００μｍ、好適には１０〜５０μｍ程度とさ
れる。前記コーティング層の厚さが１０μｍ未満である
と、充分な摩擦係数を確保し得なくなり、また１００μ
ｍを越える場合には剛性が高くなり、結果として前記弾
性部材１０への追従性が低下したり、剥がれや、割れそ
の他物理的変形が生じ易くなってしまうため注意が必要
である。The thickness of the coating layer 14 is 10 to 100 μm, preferably about 10 to 50 μm when the application of the coating layer 14 is completed, that is, when the drying is completed. When the thickness of the coating layer is less than 10 μm, a sufficient friction coefficient cannot be secured, and
If the value exceeds m, the rigidity becomes high, and as a result, followability to the elastic member 10 is reduced, and peeling, cracking, and other physical deformations are likely to occur.
【００２３】前記コーティング層１４を形成するコーテ
ィング剤には、シリコーン樹脂、ウレタン樹脂またはア
クリル樹脂等の前記弾性体１０を構成するポリウレタン
発泡体よりも滑べり止め効果が期待できる物質が使用さ
れる。前述の摩擦係数の他の物性、すなわち前記弾性
部材１０に対する密着性および追従性等から、シリコー
ン系またはウレタン系原料からなる各種樹脂が好適であ
る。As the coating agent for forming the coating layer 14, a substance such as silicone resin, urethane resin or acrylic resin, which is expected to have a more effective slip resistance than the polyurethane foam constituting the elastic body 10, is used. Various resins made of a silicone-based or urethane-based raw material are preferable in view of other physical properties of the above-described coefficient of friction, that is, adhesion and followability to the elastic member 10.
【００２４】前記粘着層１６は、前記弾性部材１０を家
具等の被着体Ｈに取り付けるための手段の一つであり、
例えば前記弾性部材１０の被着体Ｈ側に接着剤を所定量
塗布するまたは両面粘着シートを貼り付ける等して形成
される。前記接着剤または粘着シートの粘着成分として
は、前記弾性部材１０の材質に馴染みがよい、例えばア
クリル系またはゴム系のものが好適である。本実施例で
は前記被着体Ｈへの取付方法として、汎用性が高い粘着
層１６を採用しているが、本願発明は殊にこれに限定さ
れるものではなく、例えば該被着体Ｈに対して嵌合し得
る構造的取付手段も採用し得る。The adhesive layer 16 is one of means for attaching the elastic member 10 to an adherend H such as furniture.
For example, it is formed by applying a predetermined amount of an adhesive to the adherend H of the elastic member 10 or attaching a double-sided pressure-sensitive adhesive sheet. As the adhesive or the pressure-sensitive adhesive component of the pressure-sensitive adhesive sheet, for example, an acrylic or rubber-based material that is familiar with the material of the elastic member 10 is preferable. In this embodiment, a highly versatile adhesive layer 16 is employed as a method of attaching to the adherend H. However, the present invention is not particularly limited thereto. Structural attachment means that can be mated to it can also be employed.
【００２５】[0025]
【製造方法】次に前記弾性部材１０の製造方法につき説
明する。前記弾性部材１０の製造方法は、図２に示す如
く、弾性部材製造工程Ｓ１、コーティング層付与工程Ｓ
２、粘着層付与工程Ｓ３および最終工程Ｓ４とからな
る。[Manufacturing method] Next, a method of manufacturing the elastic member 10 will be described. As shown in FIG. 2, the manufacturing method of the elastic member 10 includes an elastic member manufacturing step S1 and a coating layer providing step S1.
2. It comprises an adhesive layer applying step S3 and a final step S4.
【００２６】本発明においては前記弾性部材製造工程Ｓ
１には、メカニカルフロス法が採用されており、その詳
細は図３に示す如く、主成分の一つであるポリオール成
分並びに副原料である架橋剤および触媒等を配合して、
所謂ポリオールミックスを得る配合段階Ｓ１１と、得ら
れたポリオールミックスに対して、主原料の一つである
イソシアネート成分と、副原料である整泡剤等と、造泡
用気体とを混合して充分な混合・攪拌を施す混合・攪拌
段階Ｓ１２と、所定形状への発泡成形を施す発泡成形段
階Ｓ１３と、所要形状への加工等を行なう後加工段階Ｓ
１４とから基本的になる。In the present invention, the elastic member manufacturing step S
3, a mechanical floss method is employed, and as shown in FIG. 3 in detail, a polyol component which is one of the main components and a cross-linking agent and a catalyst which are auxiliary materials are blended.
In a compounding step S11 for obtaining a so-called polyol mix, an isocyanate component as one of the main raw materials, a foam stabilizer and the like as auxiliary materials, and a foaming gas are sufficiently mixed with the obtained polyol mix. Mixing / stirring step S12 for performing appropriate mixing / stirring, foaming step S13 for performing foaming to a predetermined shape, and post-processing step S for performing processing into a required shape and the like.
14 and basically.
【００２７】前記混合・攪拌段階Ｓ１２での混合・攪拌
は、公知の混合・攪拌機等を使用して行なわれるが、混
合原料中に注入される造泡用気体を充分に分散・混合さ
せ得ることが重要である。また前記発泡成形段階Ｓ１３
は、具体的には混合・攪拌段階Ｓ１２で得られた混合原
料を、所要形状のキャビティを有する成形型或いは離型
紙、シート状物またはコンベア等の平面上に所定厚さに
吐出することで行なわれる。The mixing / stirring in the mixing / stirring step S12 is performed by using a known mixing / stirring device or the like, and it is necessary to sufficiently disperse and mix the foaming gas injected into the mixed raw material. is important. The foam molding step S13
Specifically, the mixed raw material obtained in the mixing / stirring step S12 is discharged to a predetermined thickness on a flat surface of a mold or release paper, a sheet, a conveyor, or the like having a cavity of a required shape. It is.
【００２８】前記弾性部材製造工程Ｓ１に続くコーティ
ング層付与工程Ｓ２(図２)では、前述のコーティング剤
の付与および乾燥・硬化によりコーティング層１４が形
成される。ここで使用されるコーティング剤の種類とし
ては、溶剤希釈タイプ、エマルジョンタイプまたは無溶
剤タイプの何れも採用可能であり、その付与方法として
は、ロールコーター、ナイフコーターまたはスプレー塗
布等、１０〜１００μｍの層厚さを制御できるものであ
れば、何れの方法であっても採用し得る。In the coating layer applying step S2 (FIG. 2) subsequent to the elastic member manufacturing step S1, the coating layer 14 is formed by applying the above-mentioned coating agent and drying and curing. As the type of the coating agent used here, any of a solvent dilution type, an emulsion type and a non-solvent type can be adopted, and as a method of applying the coating agent, a roll coater, a knife coater, a spray coating or the like, such as 10 to 100 μm. Any method can be adopted as long as the layer thickness can be controlled.
【００２９】続いて行なわれる粘着層付与工程Ｓ３(図
２)は、前記弾性部材１０の被着体Ｈ側(図１おける上
側)に粘着層１６を形成する工程である。一般には、容
易かつ大量に均一な前記粘着層１６を付与し得るスプレ
ー塗布等の方法が採用されるが、前述のコーティング層
付与工程Ｓ２と同様にロールコーターまたはナイフコー
ターの採用も可能である。その他市販の、または別工程
で予め作製しておいた両面粘着シートを、前記弾性部材
１０の大きさに合わせて加工して貼り付けることで粘着
層１６を形成してもよい。The subsequent adhesive layer applying step S3 (FIG. 2) is a step of forming an adhesive layer 16 on the adherend H side (upper side in FIG. 1) of the elastic member 10. In general, a method such as spray coating that can easily and uniformly apply the uniform adhesive layer 16 is employed, but a roll coater or a knife coater can also be employed as in the above-described coating layer applying step S2. In addition, the adhesive layer 16 may be formed by processing a commercially available double-sided adhesive sheet or a double-sided adhesive sheet that has been prepared in another step in advance according to the size of the elastic member 10 and attaching the processed sheet.
【００３０】最終的に施される最終工程Ｓ４(図２)は、
得られた弾性部材１０の最終仕上げおよび検査等を行な
う工程であり、この本工程Ｓ４を経ることで製造が完了
する、The final step S4 (FIG. 2) finally performed is:
This is a step of performing a final finish, an inspection, and the like of the obtained elastic member 10, and the production is completed by passing through this main step S4.
【００３１】[0031]
【実験例】以下に実施例に係る弾性部材を構成する各原
料の混合割合および種類による各物性値の変化と、コー
ティング層の有無による摩擦係数等について実験例を示
す。[Experimental Examples] Experimental examples are shown below for changes in physical properties depending on the mixing ratio and type of each raw material constituting the elastic member according to the embodiment, and the friction coefficient depending on the presence or absence of a coating layer.
【００３２】(製造方法)具体的には弾性部材製造工程Ｓ
１として、後述の(実験組成)に従った各原料を、前述の
製造方法に従って弾性部材を作製する。そしてコーティ
ング層が必要な場合にはコーティング付与工程Ｓ２とし
て、汎用のコーティング剤(商品名 SD7320;東レダウコ
ーニングシリコーン製)をロールコーターを用いて得ら
れた弾性部材の底面部に塗布して、乾燥炉にて温度１０
０〜１５０℃、時間１〜２分の条件で乾燥、所定厚のコ
ーティング層を得る。続いて実施されるべき粘着層付与
工程Ｓ３および最終工程Ｓ４は、本実験においては必要
がないので省略する。(Manufacturing method) Specifically, the elastic member manufacturing step S
As 1, an elastic member is produced from each raw material according to (experimental composition) described later and according to the above-described manufacturing method. When a coating layer is required, as a coating application step S2, a general-purpose coating agent (trade name: SD7320; manufactured by Toray Dow Corning Silicone) is applied to the bottom surface of the obtained elastic member using a roll coater, and dried. Furnace temperature 10
The coating is dried under the conditions of 0 to 150 ° C. for a time of 1 to 2 minutes to obtain a coating layer having a predetermined thickness. The pressure-sensitive adhesive layer applying step S3 and the final step S4 to be subsequently performed are omitted in the present experiment because they are not necessary in this experiment.
【００３３】(測定方法) 密度：通常の方法で、重量および体積を求めて算出し
た。 硬度：アスカーＣ硬度を用いて測定した。 圧縮永久歪み：１０ｍｍ×１０ｍｍ、厚さ２.０ｍｍ
の試験片を作製して、この試験片に対して３.５ｋｇの
荷重下において、室温条件下に１６８時間放置し、この
荷重前後の厚みを測定して、次の式に従って圧縮永久歪
みを算出した。 ［(試験前厚み(2.0mm)−試験後厚み(mm))/試験前厚み
(2.0mm)］×１００ 脆性(引張強度)：ＪＩＳ Ｋ-６２５１に規定される引
張強度試験を行ない、引張強度を測定してこの値で脆性
を評価した。なお、この引張試験において使用された条
件は以下の通り。 ダンベル３号、引張速度：２００ｍｍ/ｍｉｎ 摩擦係数：図４に示す構成を用意して、移動し得るの
に必要とされるＦ(力)を測定し、μ＝Ｆ／Ｗ(重り重量
(２００ｇ))の計算式に従ってμを求める。ここで使用
される試験片の大きさは１５×４０ｍｍ、厚さ２.０ｍ
ｍとし、測定条件である重りの重量は２００ｇ、接地面
としてメラミン樹脂合板またはＡＢＳ樹脂合板を使用し
た。(Measurement Method) Density: The weight and volume were determined and calculated by a usual method. Hardness: Measured using Asker C hardness. Compression set: 10 mm x 10 mm, thickness 2.0 mm
Is left under a load of 3.5 kg under a load of 3.5 kg at room temperature for 168 hours, the thickness before and after the load is measured, and the compression set is calculated according to the following equation. did. [(Thickness before test (2.0mm)-Thickness after test (mm)) / Thickness before test
(2.0 mm)] × 100 Brittleness (tensile strength): A tensile strength test specified in JIS K-6251 was performed, and the tensile strength was measured to evaluate the brittleness based on this value. The conditions used in this tensile test are as follows. Dumbbell No. 3, tensile speed: 200 mm / min Coefficient of friction: Prepare the configuration shown in FIG. 4 and measure the F (force) required to be able to move, and μ = F / W (weight weight)
(200 g)) is calculated according to the following formula. The size of the test piece used here is 15 × 40 mm and the thickness is 2.0 m
m, the weight of the weight, which is the measurement condition, was 200 g, and melamine resin plywood or ABS resin plywood was used as the ground contact surface.
【００３４】[0034]
【実験１】前述の製造方法によって弾性部材を作製し、
この弾性部材をそのまま、または所定形状に加工して使
用し、密度、硬度、圧縮永久歪みおよび脆性を
夫々測定し、弾性部材の物性値として評価した。[Experiment 1] An elastic member was manufactured by the above-described manufacturing method.
The elastic member was used as it was or after being processed into a predetermined shape, and the density, hardness, compression set and brittleness were measured, respectively, and evaluated as physical properties of the elastic member.
【００３５】(実験組成)以下の表１に記載の組成を用い
て実験例Ａ系〜Ｃ系と、比較例Ｄ、Ｅとを作製した。(Experimental Composition) Experimental compositions A to C and comparative examples D and E were prepared using the compositions shown in Table 1 below.
【００３６】[0036]
【表１】 [Table 1]
【００３７】(結果)下記の表２に示す結果が得られた。
表２は弾性部材に係る物性、すなわち密度、硬度、
圧縮永久歪みおよび脆性(引張強度)に関する結果を
示しており、夫々の物性値と、弾性部材として適不適
(判定)を示す○または×とが(前記物性の圧縮永久歪
みが１０％以下で、かつ脆性(引張強度)が３.０ＭＰ
ａ以上で○)記載されている。この結果から、各原料の
混合割合を明細書中に記載がなされる範囲内とすること
で、所望の物性を達成した弾性部材を製造し得る。また
架橋剤の種類を採用不適なものとした場合には、各原料
の混合割合が所定範囲であっても、脆性(引張強度)が低
くなってしまい好適な弾性部材とはなり得ないことが確
認された。(Results) The results shown in Table 2 below were obtained.
Table 2 shows physical properties relating to the elastic member, that is, density, hardness,
The results for compression set and brittleness (tensile strength) are shown.
判定 or × indicating (judgment) (the compression set of the physical properties is 10% or less and the brittleness (tensile strength) is 3.0MP
A) and above are described. From these results, by setting the mixing ratio of each raw material within the range described in the specification, an elastic member achieving desired physical properties can be manufactured. When the type of the crosslinking agent is not suitable, even if the mixing ratio of each raw material is within a predetermined range, the brittleness (tensile strength) is reduced and it cannot be a suitable elastic member. confirmed.
【００３８】[0038]
【表２】 [Table 2]
【００３９】[0039]
【実験２】前述の実験１で作製した実験例Ｃ−２の弾性
部材に、前述の製造方法に記載の方法で所定厚さ(０、
２５、５０、７５および１１０μｍ)のコーティング層
を付与することで、接地面(メラミン合板またはＡＢＳ
合板)との間に生ずる摩擦係数の測定および弾性部材
に対するコーティング層の追従性を目視(具体的には、
クラックの有無)により観察して良好または不良で評価
した。[Experiment 2] A predetermined thickness (0, 0) was applied to the elastic member of Experimental Example C-2 produced in Experiment 1 by the method described in the above-described manufacturing method.
By applying a coating layer of 25, 50, 75 and 110 μm), the ground plane (melamine plywood or ABS)
Measurement of the coefficient of friction that occurs between the plywood) and visual observation of the compliance of the coating layer to the elastic member (specifically,
It was evaluated as good or poor by observing the presence or absence of cracks.
【００４０】(結果)下記の表３に示す結果が得られた。
この結果から、コーティング層の厚さを１０〜１００μ
ｍとすることで、接地面の種類に拘わらず所望の摩擦係
数を達成した弾性部材を製造し得ることが確認された。(Results) The results shown in Table 3 below were obtained.
From this result, the thickness of the coating layer was 10 to 100 μm.
It was confirmed that by setting m, an elastic member achieving a desired coefficient of friction could be manufactured irrespective of the type of the tread.
【００４１】[0041]
【表３】 [Table 3]
【００４２】[0042]
【発明の効果】以上説明した如く、本発明に係る弾性部
材によれば、弾性足に必要とされる充分な硬度および脆
性を確保したポリウレタン発泡体を使用し得るので、防
震性および軽量性に優れると共に、高荷重下の長期間使
用に耐え得る。また、接地面に接触する底面部にコーテ
ィング層を形成することで、前述の各長所と、充分な摩
擦係数と両立し得る弾性部材を製造し得る。As described above, according to the elastic member of the present invention, it is possible to use a polyurethane foam which has sufficient hardness and brittleness required for the elastic foot, so that the elastic member has improved seismic resistance and lightness. It is excellent and can withstand long-term use under high load. Further, by forming a coating layer on the bottom surface portion that comes into contact with the grounding surface, it is possible to manufacture an elastic member that is compatible with the above-described advantages and a sufficient friction coefficient.
【図１】本発明の好適な実施例に係る弾性部材を使用し
た被着体Ｈと接地面とを示す断面図である。FIG. 1 is a cross-sectional view showing an adherend H using an elastic member according to a preferred embodiment of the present invention and a ground plane.
【図２】実施例に係る弾性部材を製造する工程を示す工
程図である。FIG. 2 is a process diagram showing a process of manufacturing an elastic member according to the embodiment.
【図３】製造の一工程である弾性部材製造工程を詳細に
示すフローチャート図である。FIG. 3 is a flowchart showing in detail an elastic member manufacturing process which is one process of manufacturing.
【図４】実験２に係る摩擦係数の測定実験を行なう実験
装置を示す概略図である。FIG. 4 is a schematic diagram showing an experimental apparatus for performing an experiment for measuring a coefficient of friction according to Experiment 2.
１０ 弾性部材 １４ コーティング層 １６ 粘着層 Ｈ 被着体 Reference Signs List 10 elastic member 14 coating layer 16 adhesive layer H adherend
フロントページの続き Ｆターム(参考） 4F006 AA37 AA51 AB37 AB39 BA09 DA04 4F100 AK51A AK51C AK52C BA02 BA03 BA07 BA10B BA10C CA01 CA02 DJ01A EH46 EH462 EJ86 EJ862 GB08 GB81 JA13A JD15A JK07A JK09 JK09C JK11 JK12A JL08A JL13B JM02C YY00A YY00C 4J034 AA02 BA03 DF01 DG00 HA04 HA06 HA07 HC11 HC12 HC22 HC46 HC64 HC66 HC67 HC71 NA01 QB15 QC01 RA15 Continued on the front page F term (reference) 4F006 AA37 AA51 AB37 AB39 BA09 DA04 4F100 AK51A AK51C AK52C BA02 BA03 BA07 BA10B BA10C CA01 CA02 DJ01A EH46 EH462 EJ86 EJ862 GB08 GB81 JA13A JD15A JK07A JK11JK02 JK09 JK01 JK09 JK01 JK09 JK01 JK09 JK01 DG00 HA04 HA06 HA07 HC11 HC12 HC22 HC46 HC64 HC66 HC67 HC71 NA01 QB15 QC01 RA15
Claims (6)
シアネート成分と、各種の副原料と、造泡用気体とを使
用し、メカニカルフロス法を実施して得られるポリウレ
タン発泡体の弾性部材(10)であって、 前記メカニカルフロス法の実施により、その物性を密度
４００〜６００ｋｇ/ｍ3およびアスカーＣ硬度７０〜９
５で、かつ圧縮永久歪み１０％以下に設定したことを特
徴とする弾性部材。An elastic member (10) of a polyurethane foam obtained by performing a mechanical floss method using a polyol component and an isocyanate component as main raw materials, various auxiliary raw materials, and a foaming gas. According to the above-mentioned mechanical floss method, the physical properties were changed to a density of 400 to 600 kg / m 3 and an Asker C hardness of 70 to 9
5. An elastic member, wherein the compression set is set to 5 and compression set is 10% or less.
ｔ％の範囲にあるポリオール成分および２５〜３５ｗｔ
％の範囲にあるイソシアネート成分からなり、前記副原
料は、少なくとも２〜３ｗｔ％の範囲にある整泡剤と、
８〜１５ｗｔ％の範囲にある架橋剤と、３〜５ｗｔ％の
範囲にある触媒と、０〜３ｗｔ％の範囲にある吸湿材
と、１０〜２０ｗｔ％の範囲にあるフィラーとからなる
請求項１記載の弾性部材。2. The method according to claim 1, wherein the main raw material is at least 20 to 45 watts.
polyol component in the range of 25% to 25% by weight
% Of the isocyanate component, wherein the auxiliary material comprises at least a foam stabilizer in the range of 2 to 3 wt%;
2. A cross-linking agent in a range of 8 to 15 wt%, a catalyst in a range of 3 to 5 wt%, a hygroscopic material in a range of 0 to 3 wt%, and a filler in a range of 10 to 20 wt%. An elastic member as described in the above.
に設けることで、被着体(Ｈ)への取り付けを容易化した
請求項１または２記載の弾性部材。3. The elastic member according to claim 1, wherein the elastic member is provided with an adhesive layer in a laminated manner to facilitate attachment to the adherend.
５.０の範囲にあるコーティング層(14)を設けてなる請
求項１〜３の何れかに記載の弾性部材。4. The elastic member (10) has a coefficient of friction of 1.5 to 1.5.
The elastic member according to any one of claims 1 to 3, further comprising a coating layer (14) in a range of 5.0.
〜１００μｍの範囲にある請求項４記載の弾性部材。5. The thickness of the coating layer (14) is 10
The elastic member according to claim 4, wherein the elastic member is in a range of from 100 µm to 100 µm.
樹脂またはウレタン樹脂から形成される請求項４記載の
弾性部材。6. The elastic member according to claim 4, wherein said coating layer is formed of a silicone resin or a urethane resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000333666A JP2002138126A (en) | 2000-10-31 | 2000-10-31 | Elastic piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000333666A JP2002138126A (en) | 2000-10-31 | 2000-10-31 | Elastic piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002138126A true JP2002138126A (en) | 2002-05-14 |
Family
ID=18809703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000333666A Pending JP2002138126A (en) | 2000-10-31 | 2000-10-31 | Elastic piece |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002138126A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7625625B2 (en) | 2005-08-02 | 2009-12-01 | World Properties, Inc. | Silicone compositions, methods of manufacture, and articles formed therefrom |
| KR20150036042A (en) * | 2012-07-13 | 2015-04-07 | 닛뽄 가야쿠 가부시키가이샤 | Alkali development type resin, and photosensitive resin composition using same |
-
2000
- 2000-10-31 JP JP2000333666A patent/JP2002138126A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7625625B2 (en) | 2005-08-02 | 2009-12-01 | World Properties, Inc. | Silicone compositions, methods of manufacture, and articles formed therefrom |
| KR20150036042A (en) * | 2012-07-13 | 2015-04-07 | 닛뽄 가야쿠 가부시키가이샤 | Alkali development type resin, and photosensitive resin composition using same |
| KR102031014B1 (en) | 2012-07-13 | 2019-10-11 | 닛뽄 가야쿠 가부시키가이샤 | Alkali development type resin, and photosensitive resin composition using same |
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