JP4696257B2 - Manufacturing method of powder seal piece of rotating shaft - Google Patents
Manufacturing method of powder seal piece of rotating shaft Download PDFInfo
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- JP4696257B2 JP4696257B2 JP2000100478A JP2000100478A JP4696257B2 JP 4696257 B2 JP4696257 B2 JP 4696257B2 JP 2000100478 A JP2000100478 A JP 2000100478A JP 2000100478 A JP2000100478 A JP 2000100478A JP 4696257 B2 JP4696257 B2 JP 4696257B2
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- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
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Description
【0001】
【産業上の利用分野】
本発明は回転軸の粉末シール片、例えば特開平5−181354号、発明の名称「回転軸の粉末シール片ホルダー」(出願人の特許出願)に記載のような粉末シール片を、均一、高精度に、また簡単、迅速に製造して、安価に提供できるようにしたことを特徴とする製造法に係り、また該製造法によって製造した粉末シール片に係るものである。
【0002】
【従来技術とその課題】
現在、複写機、ファックス、プリンター等において、トナー(例、カーボン微粉末)を充填した長方形箱状等のケースにマグネットローラー、転写ローラー等の回転軸をセットしたトナーカートリッジ等が広く用いられているが、長期間の使用により、これらの回転軸1の周面に付着した粉末2が軸受部3に混入して回転の妨げにならないように、通常、軸受部3の内側(例、トナー槽の左右側板4)に粉末2をシールするシール部5を設けて、該シール部5から軸受部3側へ粉末がもれ出ないようにしている。(図15、図16参照)
【0003】
該シール部5は回転軸1をトナーケース等の正面側若しくは上面側から嵌合取付けするU字形等の凹部5aを形成し、該凹部5aの内周面に、粉末のもれをシールする粉末シール片aを両面接着フイルムで一体的に接着しているものである。(図14参照)
【0004】
そして、粉末シール片aは素材として、弾力性があって摩擦抵抗が極めて少なく、耐久性に秀れ、高密度に絡合した繊維が微粉末の侵入を有効に防御する作用を行う等の秀れた特性を兼備したテフロンフエルトを使用している。
また、該テフロンフエルトは1万円札大で1万円すると言われる位に極めて高価であり、厚さが増すほど高価であるため、粉末シール片aは他のクッション性の素材(例、発泡プラスチック、通常のフエルト等)と組み合わせて製作するのが通例である。
【0005】
上記粉末シール片aは、メーカーによって多少相違するが、例えば、幅5mm位、長さ50mm位、厚さ1〜5mm位のテフロンフエルト片に発泡プラスチック片等を接着して積層形成したものの裏面に両面接着フイルム7の片面を接着(他方面に剥離紙7´を接着)したものであり、該粉末シール片aを、上記シール部5の凹部5aの内周面に、両面接着フイルム7の他方面(剥離紙7´を剥がして)を接着して取付けるものであるが、(図14参照)
従来、上記粉末シール片aの取付け作業はユーザーの保守、修理等の現場において、全て手作業によって行われており、その非能率性の解決が最大の課題とされてきたものである。
即ち、粉末シール片aの両面接着テープ7の剥離紙7´を剥がして凹部5aの内周面に接着するのであるが、その時、粉末もれを防ぐため、粉末シール片aが回転軸1の周面に良く馴染んで密着するように、作業者の指先で粉末シール片aを凹部5aの内周面に扱くようにして押しつけて接着するようにしている。
ところが、どうしても粉末シール片aの内面側に皺(しわ)10が寄って凸凹になってしまい、それを指先で扱いて矯正してもなかなか平滑にならない上に、熟練の度合いによってバラツキが多く生じる難点があった。(図14の(イ)、(ロ)参照)
【0006】
【発明の目的】
そこで、上記特許出願に係る粉末シール片は、テフロンフエルトと弾力性のある発泡プラスチックを接着し、その発泡プラスチックの裏面に両面接着テープの片面を接着(他方面に剥離紙7´を接着)して積層構成し、該積層構成のものをシール部の凹部の形状に見合ったU字形等の形状に構成した、回転軸の粉末シール片を設け、
該U字形等の粉末シール片を僅かにすぼませた状態で、トナーケース等の回転軸のシール部の略円形若しくは半円形の凹部内に挿入し、シール部の略円形若しくは半円形の凹部の内面に両面接着テープで固着して取付けるようにして、上記従来の課題を解決したのである。
【0007】
然るところ、上記特許出願に係る回転軸の粉末シール片を均一高精度に製造して、大量に安価に提供するには下記のような課題があった。
【0008】
第1の課題は、如何にすればテフロンフェルトシートと発泡プラスチックシートを回転軸受部分にシール材として長期間使用しても剥離しないような状態に強固に接着できるかであった。
例えば、最も一般的な手段として両面粘着テープ若しくはフィルムで両者を粘着することが行われているが、この場合、剥離しやすく、位置ずれを生じ、また経時劣化するため、所謂粘着状態では長期使用に耐久できない。
よって、加熱で溶融して強力な粘着力を発揮し、冷えると元のフィルム状態に戻る熱溶融性合成樹脂製の接着フィルムが最適である。
【0009】
ところが、テフロンフェルトは熱に強い特性を有する反面、他の素材と接着しにくい性質があり、一方、発泡プラスチックは合成樹脂系の接着材で容易に他の素材と接着する反面、熱に弱く比較的低い温度で変質、溶融する難点がある。
よって、テフロンフェルトシートと発泡プラスチックシートの間に上記接着フィルムを介在して加熱加圧すると、接着フィルムが溶融して発泡プラスチックシートと良好に接着した温度では、接着フィルムとテフロンフェルトシートは接着しない。
しかし、テフロンフェルトシートと接着フィルムが良好に接着するまで温度を上げると、発泡プラスチックシートが変質、溶融してしまうという、極めて解決が困難な課題があった。
【0010】
第2の課題は、テフロンフェルトシートと発泡プラスチックシートを積層形成したものをU形、C形、J形、その他の形状に成形するときに、如何にしてテフロンフェルトの内面に皺が生じないように平滑に発泡プラスチックに接着するかであった。
例えば、はじめから、テフロンフェルトシートと発泡プラスチックシートの全面を一体的に接着した状態のもの、またはテフロンフェルトシートと発泡プラスチックシートを単に重合した状態のものを、U形、G形、J形、Ω形等の成形用型で加圧加熱成形すると、必ずテフロンフェルトシートの内面に皺を生じてしまうのであった。(図14参照)
【0011】
【発明が解決した課題】
本発明は上記第1の課題を、まず、テフロンフェルトシートと接着フィルムを発泡プラスチックシートが変質、溶融する以上の高温で加熱加圧して一体的に接着し、次いで上記一体的に接着したものと発泡プラスチックシートを重合し、発泡プラスチックシートは変質、溶融しないが接着フィルムは溶融するくらいの温度で加熱加圧して、両者を一体的に接着することによって解決し、
【0012】
また、第2の課題は、まず、テフロンフェルトシートと接着フィルムを一体にしたものと発泡プラスチックシートの一部分だけを加圧加熱接着したものを設け、このものを成型用型にかけて、雌雄型間の押圧で予め接着した一部分を基点として皺を生じないように、展ばし馴らし扱くように押し付けて、発泡プラスチックのU形等の内面にテフロンフェルトシートを接着フィルムを介して密着設置して、加熱することによって、テフロンフェルトシートに皺を生じることなく両者を一体的に接着すると共にU形等に成形するようにして解決したものである。
【0013】
【課題を解決する手段1】
「回転軸の粉末シール片の製造法」
即ち、本発明は、設定幅及び長さのテフロンフェルトシートの片面に熱溶融性合成樹脂製の接着フィルムを重合し、それを後記発泡プラスチックシートが変質、溶融する温度より高い温度で加熱加圧し、接着フィルムの加熱溶融で両者を一体的に接着してシートBを設け、
【0014】
設定幅及び長さの発泡プラスチックシートの片面に両面粘着フィルムの片面を粘着すると共に他面の剥離紙はそのまま残してシートCを設け、
【0015】
上記シートBとシートCを裁断して設定幅及び長さの短冊状若しくは帯状に形成し、そのシートBの接着フィルム面とシートCの発砲プラスチックシート面を重合すると共に、その一部分をシートCの発泡プラスチックシートが変質、溶融しない温度で加熱加圧し、接着フィルムの加熱溶融で接着してシートDを設け、
【0016】
次に、横断面U形、C形、J形、Ω形等の雄型、雌型からなるプレス成形用型に上記のシートDをセットし、雌雄型間でシートBのテフロンフェルトシートの内面側に皺を生じないように、予め接着してある一部分を基点として展ばし馴らし扱くように押し付け、発泡プラスチックシートが変質、溶融しない温度で加熱し、接着フィルムの加熱溶融でシートBをシートCの発泡プラスチックシートに一体的に接着しつつU形、C形、J形、Ω形等に成形し、それを成形用型から取り外して、横断面U形、C形、J形、Ω形等の粉末シール片の原材Eを設け、
【0017】
上記の原材Eを設定幅宛に切断して、若しくはシートCの剥離紙を残した状態で設定幅宛に切断して、U形、C形、J形、Ω形等の、回転軸の粉末シール片Aを設けるようにしたものである、回転軸の粉末シール片の製造法によって、課題を解決したものである。
【0018】
【課題を解決する手段2】
「回転軸の粉末シール片」
本発明は、テフロンフェルトシートの片面に熱溶融性合成樹脂製の接着フィルムを一体的に接着して設けたシートB、
【0019】
発泡プラスチックシートの片面に両面粘着フィルムの片面を粘着すると共に他面の剥離紙はそのまま残して設けたシートC、
【0020】
上記シートBとシートCを、シートBの接着フィルム面とシートCの発砲プラスチックシート面を重合し、その一部分を接着フィルムの加熱溶融で接着して設けたシートD、
【0021】
横断面U形、C形、J形、Ω形等の雄型、雌型からなるプレス成形用型に上記のシートDをセットし、雌雄型間で加熱加圧し、接着フィルムの加熱溶融でシートBをシートCの発泡プラスチックシート面に一体的に接着しつつU形、C形、J形、Ω形等に成形し、それを成形用型から取り外して設けた横断面U形、C形、J形、Ω形等の粉末シール片の原材E、
【0022】
上記原材Eを設定幅宛に切断して設けた、若しくはシートCの剥離紙を残した状態で設定幅宛に切断して設けた、U形、C形、J形、Ω形等の、回転軸の粉末シール片、によって課題を解決したものである。
【0023】
【実施例】
設定幅及び長さのテフロンフェルトシート8の片面に熱溶融性合成樹脂製の接着フィルム9を重合し、それを後記発泡プラスチックシート6が変質、溶融する温度より高い温度で加熱加圧し、接着フィルムの加熱溶融で両者を一体的に接着してシートBを設け、(図4)
【0024】
設定幅及び長さの発泡プラスチックシート6の片面に両面粘着フィルム7の片面を粘着すると共に他面の剥離紙7´はそのまま残してシートCを設け、(図5)
【0025】
上記シートBとシートCを裁断して設定幅及び長さの短冊状若しくは帯状に形成し、そのシートBの接着フィルム9面とシートCの発砲プラスチックシート6面を重合すると共に、その一部分12をシートCの発泡プラスチックシート6が変質、溶融しない温度で加熱加圧し、接着フィルム9の加熱溶融で接着してシートDを設け、(図6、図7)
【0026】
次に、横断面U形、C形、J形、Ω形等の雄型、雌型からなるプレス成形用型11に上記のシートDをセットし、雌雄型11a、11b間でシートBのテフロンフェルトシート8の内面側に皺10を生じないように、予め接着してある一部分12を基点として展ばし馴らし扱くように押し付け、発泡プラスチックシート6が変質、溶融しない温度で加熱し、接着フィルム9の加熱溶融でシートBをシートCの発泡プラスチックシート6に一体的に接着しつつU形、C形、J形、Ω形等に成形し、それを成形用型11から取り外して、横断面U形、C形、J形、Ω形等の粉末シール片ホルダーAの原材Eを設け、(図8〜図9、及び図10〜図13)
【0027】
上記の原材Eを設定幅宛に切断して、若しくはシートCの剥離紙7´を残した状態で設定幅宛に切断して、U形、C形、J形、Ω形等の、回転軸の粉末シール片Aを設けるようにした、回転軸の粉末シール片Aの製造法であり、該製造法によって製造した回転軸の粉末シール片Aである。(図1、図2、及び図3)
【0028】
なお、シートBは、設定幅及び長さのテフロンフェルトシートの片面に接着フィルムを接着したのち、それを裁断して設定幅及び長さの短冊状若しくは帯状に形成するか、若しくは、予め設定幅及び長さの短冊状若しくは帯状に形成したテフロンフェルトシートの片面に同形同大の接着フィルムを接着して設けるか、任意ある。
【0029】
また、シートCは、設定幅及び長さの発泡プラスチックシートの片面に両面粘着フィルムの片面を粘着すると共に他面の剥離紙はそのまま残し、それを裁断して設定幅及び長さの短冊状若しくは帯状に形成するか、若しくは、予め設定幅及び長さの短冊状若しくは帯状に形成した発泡プラスチックシートの片面に同形同大の両面粘着フィルムの片面を粘着すると共に他面の剥離紙はそのまま残して設けか、任意である。
【0030】
また、テフロンフェルトシートの幅に比し発泡プラスチックシートの幅を予め大に形成し、U形、C形、J形、Ω形等に成形するときにテフロンフェルトシートの外周面に発泡プラスチックシートが巻き付くようにして、幅寸法の過不足なく工合良く仕上がるようにする。(図10〜図13参照)
【0031】
【課題を解決する手段3】
「テフロンフェルトと発泡プラスチックの接着方法」
本発明は、テフロンフェルトと発泡プラスチックを熱溶融性合成樹脂製の接着フィルムの溶融接着で強固一体的に接着するにつき、
まず、発泡プラスチックが変質、溶融する以上の高温でテフロンフェルトと接着フィルムを加熱加圧して両者を一体的に接着し、
次で、上記のテフロンフェルトと接着フィルムを一体的に接着したものと発泡プラスチックを接着フィルムを中間にして重合し、発泡プラスチックが変質、溶融せず、接着フィルムは溶融する温度で加熱加圧して両者を一体的に接着するようにした、テフロンフェルトと発泡プラスチックの接着方法によって、課題を解決したものである。
【0032】
【課題を解決する手段4】
「テフロンフェルトと発泡プラスチックの接着及び成形方法」
本発明は、テフロンフェルトと発泡プラスチックを熱溶融性合成樹脂製の接着フィルムの溶融接着で強固一体的に接着すると共に、プレス成形用型でU形その他の形状に成形するにつき、
まず、発泡プラスチックが変質、溶融する以上の高温でテフロンフェルトと接着フィルムを加熱加圧して両者を一体的に接着し、
次で、上記のテフロンフェルトと接着フィルムを一体的に接着したものと発泡プラスチックを接着フィルムを中間にして重合し、その一部分例えば一方の側縁等を発泡プラスチックが変質、溶融せず、接着フィルムは溶融する温度で加熱加圧して一体的に接着した後、そのものを成形用型によって発泡プラスチックが変質、溶融せず、接着フィルムは溶融する温度で加圧加熱して両者を一体的に接着すると同時にU形その他の形状に成形するようにした、テフロンフェルトと発泡プラスチックの接着及び成形方法によって、課題を解決したものである。
【0033】
【効果】
テフロンフェルトシートに接着フィルムを高温で加熱加圧して一体的に接着したのち、そのものと発泡プラスチックシートを前記より低温で加熱加圧して一体的に接着するようにしたので、両者が長期間の使用でも剥離することがない極めて耐久性に優れた粉末シール片を製造することができる。
【0034】
U形、C形、J形、Ω形等に成形加工するときに、テフロンフェルトシートの内面側に皺が生じる難点があるが、本発明は予めテフロンフェルトシートと発泡プラスチックシートの一部分を接着しておき、そのものを成形用型にかけて成形することによって、テフロンフェルトシートが前記一部分を基点として雌雄型間で皺が生じないように展ばし馴らし扱くように押し付けられ、皺のない状態に重合した状態で加圧加熱成形されるため、粉末シール片の内面に皺がなく平滑で粉末洩れを生じない優れた粉末シール片を製造できる特徴がある。
【0035】
また、テフロンフェルトシートの幅に比し発泡プラスチックシートの幅を予め大に形成しておけば、U形、C形、J形、Ω形等に成形したときにテフロンフェルトシートの外周面に発泡プラスチックシートが巻き付くようになって、過不足なく工合良く仕上げることができる。(図10〜図13参照)
【0036】
テフロンフェルトシートと発泡プラスチックシートを重合したものをプレス成形用型で加圧加熱してU形、C形、J形、Ω形等に成形するとき、両者を雌雄型間で加圧し皺のない状態でU形、C形、J形、Ω形等に重合曲成した状態で加熱して接着するようにしたので、離型後のU形、C形、J形、Ω形等の形状を戻りのない不変で強固なものに仕上げ得る優れた効果がある。
【図面の簡単な説明】
【図1】本発明方法で製造した、U形の、回転軸の粉末シール片の正面図、平面図、及び右側面図。
【図2】図1のF−F線拡大断面図。
【図3】本発明方法で製造した、J形の、回転軸の粉末シール片の正面図、平面図、及び右側面図。
【図4】粉末シール片用のテフロンフェルトシートと接着フィルムを一体的に接着したシートBの横断面図。
【図5】ホルダー部用の発泡プラスチックシートと両面粘着フィルムの片面を粘着したシートCの横断面図。
【図6】シートBとシートCの一部分(例、一側縁)を接着して設けたシートDの横断面図。
【図7】図6のシートDの平面図。
【図8】成形用型でシートDを加圧加熱成形して原材Eを設ける説明横断面図で、成形前を示す図。
【図9】成形用型でシートDを加圧加熱成形して原材Eを設ける説明横断面図で、成形時を示す図。
【図10】図8の成形用型によりシートDをU形の原材Eに成形する順を示す説明図。
【図11】図10の次の成形状態を示す説明図。
【図12】図11の次の成形状態を示す説明図。
【図13】U形の原材Eに成形した状態を示す説明図。
【図14】従来のシール部の粉末シール形成の説明図で、(イ)で粉末シール片を凹部に挿入し、(ロ)で取り付けた状態を示す図。
【図15】従来の粉末シール片をシール部に取り付けた一部切断正面図。
【図16】図15のG−G線断面図。
【符号の説明】
A 粉末シール片(原材Eを設定幅に切断して設けた)
B テフロンフェルトシートと接着フィルムを一体的に接着したシート
C 発泡プラスチックシートと両面粘着フィルムの片面を粘着したシート
D シートBとシートDの一部分(例、一側縁)を接着したシート
E シートDを成形用型でU形、C形、J形、Ω形等に成形して設けた粉末シール片の原材
a 従来の粉末シール片
1 回転軸
2 粉末
3 軸受部
4 側板
5 シール部
5a 凹部
6 発泡プラスチックシート
7 両面粘着フィルム
7′ 剥離紙
8 テフロンフェルトシート
9 接着フィルム
10 皺(しわ)
11 成形用型
11a 雄型
11b 雌型
12 一部分(例、一側縁)接着
13 全面接着[0001]
[Industrial application fields]
The present invention provides a powder seal piece of a rotating shaft, for example, a powder seal piece as described in Japanese Patent Application Laid-Open No. 5-181354, entitled “Rotary shaft powder seal piece holder” (Applicant's patent application). The present invention relates to a manufacturing method characterized in that it can be manufactured accurately, simply and quickly, and can be provided at low cost, and also relates to a powder seal piece manufactured by the manufacturing method.
[0002]
[Prior art and its problems]
At present, in copiers, fax machines, printers, etc., toner cartridges, etc., in which rotating shafts such as a magnet roller and a transfer roller are set in a rectangular box-like case filled with toner (eg, carbon fine powder) are widely used. However, in order to prevent the
[0003]
The
[0004]
The powder seal piece a has excellent elasticity such as its elasticity, extremely low frictional resistance, excellent durability, and the function that the fibers intertwined with high density effectively prevent the penetration of fine powder. Uses Teflon felt that combines the above characteristics.
Further, since the Teflon felt is extremely expensive as it is said to be 10,000 yen with a 10,000 yen bill size, and the price increases as the thickness increases, the powder seal piece a is made of another cushioning material (for example, foamed). Usually, it is manufactured in combination with plastic, normal felt, etc.).
[0005]
The powder seal piece a is slightly different depending on the manufacturer. For example, the powder seal piece a is formed on a back surface of a laminate formed by bonding a foamed plastic piece or the like to a Teflon felt piece having a width of about 5 mm, a length of about 50 mm, and a thickness of about 1 to 5 mm. One side of the double-sided
Conventionally, the above-mentioned powder seal piece a has been attached manually at the site of user maintenance, repair, etc., and the resolution of its inefficiency has been the biggest issue.
That is, the release paper 7 'of the double-sided
However, the
[0006]
OBJECT OF THE INVENTION
Therefore, the powder seal piece according to the above patent application is obtained by adhering Teflon felt and elastic foamed plastic, and adhering one side of the double-sided adhesive tape to the back side of the foamed plastic (adhering release paper 7 'to the other side). A laminated shaft, and provided with a powder seal piece of the rotating shaft, which is configured in a U-shape or the like corresponding to the shape of the concave portion of the seal portion.
With the U-shaped powder seal piece slightly recessed, it is inserted into the substantially circular or semicircular recess of the seal portion of the rotating shaft of the toner case or the like, and the substantially circular or semicircular recess of the seal portion is inserted. The above-mentioned conventional problems have been solved by attaching them to the inner surface with a double-sided adhesive tape.
[0007]
However, in order to produce the powder seal piece of the rotating shaft according to the above-mentioned patent application uniformly and with high precision and to provide a large amount at a low cost, there are the following problems.
[0008]
The first problem was how the Teflon felt sheet and the foamed plastic sheet could be firmly bonded to each other so that they would not be peeled off even when used as a sealing material for a long period of time.
For example, the most common means is to adhere both with a double-sided adhesive tape or film. In this case, it is easy to peel off, misaligns, and deteriorates over time. It cannot be durable.
Therefore, an adhesive film made of a heat-fusible synthetic resin that melts by heating and exhibits a strong adhesive force and returns to the original film state when cooled is optimal.
[0009]
However, Teflon felt is resistant to heat, but it is difficult to bond to other materials. On the other hand, foamed plastics are easily bonded to other materials using synthetic resin adhesives, but they are weak against heat. There is a problem that it changes quality and melts at low temperatures.
Therefore, when the adhesive film is interposed between the Teflon felt sheet and the foamed plastic sheet and heated and pressed, the adhesive film and the Teflon felt sheet do not adhere at the temperature at which the adhesive film melts and adheres well to the foamed plastic sheet. .
However, when the temperature is raised until the Teflon felt sheet and the adhesive film are satisfactorily bonded, there is a problem that is extremely difficult to solve, that is, the foamed plastic sheet is altered and melted.
[0010]
The second problem is how to prevent wrinkles from forming on the inner surface of the Teflon felt when the Teflon felt sheet and the foamed plastic sheet are formed into a U shape, C shape, J shape, or other shapes. It adhered to the foamed plastic smoothly.
For example, from the beginning, a state in which the entire surface of the Teflon felt sheet and the foamed plastic sheet are integrally bonded, or a state in which the Teflon felt sheet and the foamed plastic sheet are simply polymerized are U-shaped, G-shaped, J-shaped, When pressure and heat molding is performed with a molding die such as Ω type, the inner surface of the Teflon felt sheet is always wrinkled. (See Figure 14)
[0011]
[Problems solved by the invention]
In the present invention, the first problem is as follows. First, the Teflon felt sheet and the adhesive film are integrally bonded by heating and pressurizing at a high temperature that does not cause the foamed plastic sheet to be altered and melted, and then integrally bonded. The problem is solved by polymerizing the foamed plastic sheet, the foamed plastic sheet is not altered or melted, but the adhesive film is heated and pressurized at a temperature that melts, and the two are bonded together.
[0012]
The second problem is that a Teflon felt sheet and an adhesive film are integrated and a part of a foamed plastic sheet is bonded under pressure and heat, and this is applied to a mold for molding between male and female molds. Pressed to spread and handle so as not to cause wrinkles based on the part that was previously bonded by pressing, and tightly installed the Teflon felt sheet on the inner surface of the U-shaped foamed plastic via an adhesive film, By heating, the Teflon felt sheet is integrally bonded without causing wrinkles and is formed into a U shape or the like.
[0013]
[Means for Solving the Problem 1]
"Production method of powder seal piece of rotating shaft"
That is, in the present invention, an adhesive film made of a heat-melting synthetic resin is polymerized on one side of a Teflon felt sheet having a set width and length, and this is heated and pressurized at a temperature higher than the temperature at which the foamed plastic sheet changes and melts. The sheet B is provided by integrally bonding the two by heating and melting the adhesive film,
[0014]
Adhering one side of the double-sided adhesive film to one side of the foamed plastic sheet of the set width and length and providing the sheet C leaving the release paper on the other side as it is,
[0015]
The sheet B and the sheet C are cut to form a strip or a band having a set width and length, and the adhesive film surface of the sheet B and the foamed plastic sheet surface of the sheet C are polymerized, and a part of the sheet C is formed. The foamed plastic sheet is heated and pressed at a temperature at which the foamed plastic sheet does not change and melt, and the adhesive film is bonded by heating and melting to provide a sheet D.
[0016]
Next, the above-mentioned sheet D is set in a press-molding die comprising male and female dies such as U-shaped, C-shaped, J-shaped, and Ω-shaped cross sections, and the inner surface of the Teflon felt sheet of the sheet B between the male and female dies. In order not to cause wrinkles on the side, the part that has been pre-bonded is spread as a starting point and pressed to handle and handle, and the foamed plastic sheet is heated at a temperature that does not change or melt, and the adhesive film heats and melts sheet B. Molded into U-shaped, C-shaped, J-shaped, Ω-shaped, etc. while integrally adhering to the foamed plastic sheet of sheet C, removed from the molding mold, and cross-sectional U-shaped, C-shaped, J-shaped, Ω Providing raw material E of powder seal pieces of shape, etc.
[0017]
Cut the raw material E to the set width or cut to the set width while leaving the release paper of the sheet C, and rotate the rotating shaft such as U shape, C shape, J shape, Ω shape, etc. The problem is solved by the method of manufacturing the powder seal piece of the rotating shaft, which is provided with the powder seal piece A.
[0018]
[
"Powder seal piece of rotating shaft"
The present invention is a sheet B provided by integrally bonding a heat-meltable synthetic resin adhesive film on one side of a Teflon felt sheet,
[0019]
Sheet C provided by adhering one side of the double-sided adhesive film to one side of the foamed plastic sheet and leaving the release paper on the other side as it is,
[0020]
A sheet D provided by polymerizing the sheet B and the sheet C on the adhesive film surface of the sheet B and the foamed plastic sheet surface of the sheet C, and bonding a part thereof by heating and melting the adhesive film;
[0021]
The above sheet D is set in a press-molding die composed of male and female dies such as U-shaped, C-shaped, J-shaped, and Ω-shaped cross sections, heated and pressed between the male and female dies, and the sheet is obtained by heating and melting the adhesive film. B is formed in U-shape, C-shape, J-shape, Ω-shape, etc. while integrally bonding to the foamed plastic sheet surface of the sheet C, and is removed from the molding die. Raw material E of powder seal pieces such as J type and Ω type,
[0022]
U-shaped, C-shaped, J-shaped, Ω-shaped, etc. provided by cutting the raw material E to the set width or by cutting to the set width with the release paper of the sheet C left. The problem is solved by the powder seal piece of the rotating shaft.
[0023]
【Example】
An
[0024]
Adhering one side of the double-sided pressure-
[0025]
The sheet B and the sheet C are cut into a strip shape or a band shape having a set width and length, and the
[0026]
Next, the above-mentioned sheet D is set in a press-molding die 11 composed of male and female dies such as U-shaped, C-shaped, J-shaped, and Ω-shaped cross sections, and the Teflon of the sheet B is placed between the male and female dies 11a and 11b. To prevent
[0027]
Cut the raw material E to the set width, or cut to the set width while leaving the release paper 7 'of the sheet C, and rotate the U shape, C shape, J shape, Ω shape, etc. This is a method for manufacturing a powder seal piece A for a rotary shaft, in which a powder seal piece A for a shaft is provided, and is a powder seal piece A for a rotary shaft manufactured by the manufacturing method. (FIGS. 1, 2 and 3)
[0028]
Note that the sheet B is formed into a strip or strip having a set width and length by cutting an adhesive film on one side of a Teflon felt sheet having a set width and length, or a preset width. In addition, an adhesive film of the same shape and the same size may be provided on one side of a Teflon felt sheet formed in a strip shape or a strip shape.
[0029]
Further, the sheet C adheres one side of the double-sided pressure-sensitive adhesive film to one side of the foamed plastic sheet having a set width and length, and leaves the other side of the release paper as it is, and cuts it into a strip shape having a set width and length or Adhere one side of a double-sided adhesive film of the same shape and size to one side of a foamed plastic sheet that has been formed into a strip shape or formed in a strip shape or strip shape with a preset width and length in advance and leave the release paper on the other side as it is Provided or optional.
[0030]
In addition, the foamed plastic sheet is formed on the outer peripheral surface of the Teflon felt sheet when the foamed plastic sheet is formed wider than the Teflon felt sheet in advance. Wrap it so that it finishes well without over- and under-width dimensions. (See FIGS. 10 to 13)
[0031]
[
"Adhesion between Teflon felt and foamed plastic"
In the present invention, the Teflon felt and the foamed plastic are firmly and integrally bonded by fusion bonding of an adhesive film made of a heat-melting synthetic resin.
First, the Teflon felt and adhesive film are heated and pressurized at a high temperature above which the plastic foam changes and melts, and the two are bonded together.
Next, polymerize the Teflon felt and adhesive film integrally bonded to the foamed plastic with the adhesive film in the middle, and the foamed plastic will not be altered or melted. The problem has been solved by a method of bonding Teflon felt and foamed plastic, in which the two are bonded together.
[0032]
[
"Method of bonding and molding Teflon felt and foamed plastic"
In the present invention, the Teflon felt and the foamed plastic are firmly and integrally bonded by fusion bonding of an adhesive film made of a heat-melting synthetic resin, and formed into a U shape or other shape by a press mold.
First, the Teflon felt and adhesive film are heated and pressurized at a high temperature above which the plastic foam changes and melts, and the two are bonded together.
Next, the above-mentioned Teflon felt and adhesive film integrally bonded to the foamed plastic are polymerized with the adhesive film in the middle, and the foamed plastic is not altered or melted at a part, for example, one side edge. After heating and pressurizing at the melting temperature and bonding them together, the foamed plastic will not be altered or melted by the mold, and the adhesive film will be heated and heated at the melting temperature to bond them together. At the same time, the problem is solved by the bonding and molding method of Teflon felt and foamed plastic, which are formed into a U shape and other shapes.
[0033]
【effect】
After the adhesive film is bonded to the Teflon felt sheet by heating and pressurizing at a high temperature, the foamed plastic sheet and the foamed plastic sheet are bonded together by heating and pressing at a lower temperature than the above. However, it is possible to produce a powder seal piece with excellent durability that does not peel off.
[0034]
When molding into U-shaped, C-shaped, J-shaped, Ω-shaped, etc., there is a problem that wrinkles occur on the inner surface side of the Teflon felt sheet. However, in the present invention, a part of the Teflon felt sheet and the foamed plastic sheet are bonded in advance. The Teflon felt sheet is pressed so that it does not cause wrinkles between the male and female molds, and is polymerized in a state free from wrinkles. Therefore, the powder seal piece is smooth and free from powder leakage, so that an excellent powder seal piece can be produced.
[0035]
Also, if the foamed plastic sheet is made wider than the Teflon felt sheet in advance, it will foam on the outer surface of the Teflon felt sheet when it is molded into a U, C, J, or Ω shape. A plastic sheet can be wound around it, so that it can be finished well without overs and shorts. (See FIGS. 10 to 13)
[0036]
When a Teflon felt sheet and a foamed plastic sheet are polymerized into a U-shaped, C-shaped, J-shaped, or Ω-shaped product by pressurizing and heating them with a press mold, they are pressurized between the male and female molds without wrinkles Since it was heated and bonded in a state of polymerization and bending into a U shape, C shape, J shape, Ω shape, etc., the shape of the U shape, C shape, J shape, Ω shape, etc. after release There is an excellent effect that can be finished into an unchanging and strong one without return.
[Brief description of the drawings]
FIG. 1 is a front view, a plan view, and a right side view of a U-shaped rotary shaft powder seal piece manufactured by the method of the present invention.
FIG. 2 is an enlarged sectional view taken along line FF in FIG.
3 is a front view, a plan view, and a right side view of a J-shaped rotary shaft powder seal piece manufactured by the method of the present invention. FIG.
FIG. 4 is a cross-sectional view of a sheet B in which a Teflon felt sheet for a powder seal piece and an adhesive film are integrally bonded.
FIG. 5 is a cross-sectional view of a sheet C in which one side of a foam plastic sheet for a holder portion and a double-sided adhesive film is adhered.
FIG. 6 is a cross-sectional view of a sheet D provided by bonding a part (eg, one side edge) of the sheet B and the sheet C.
7 is a plan view of the sheet D in FIG. 6. FIG.
FIG. 8 is an explanatory cross-sectional view in which a raw material E is provided by press-heating and molding a sheet D with a molding die, and shows a state before molding.
FIG. 9 is an explanatory cross-sectional view in which a raw material E is provided by press-heating and molding a sheet D with a molding die, and a view showing molding.
10 is an explanatory view showing the order in which a sheet D is formed into a U-shaped raw material E by the forming die shown in FIG.
11 is an explanatory view showing the next molding state of FIG.
12 is an explanatory view showing the next molding state of FIG. 11. FIG.
FIG. 13 is an explanatory view showing a state of being molded into a U-shaped raw material E.
FIG. 14 is an explanatory view of forming a powder seal of a conventional seal portion, and shows a state in which a powder seal piece is inserted into a recess in (A) and attached in (B).
FIG. 15 is a partially cut front view in which a conventional powder seal piece is attached to a seal portion.
16 is a cross-sectional view taken along line GG in FIG.
[Explanation of symbols]
A Powder seal piece (provided by cutting raw material E into set width)
B Sheet T in which a Teflon felt sheet and an adhesive film are integrally bonded C Sheet D in which a foamed plastic sheet and one side of a double-sided adhesive film are adhered to each other Sheet B and a sheet E in which a part (eg, one side edge) of the sheet D is adhered The raw material of the powder seal piece provided by molding it into a U-shape, C-shape, J-shape, Ω-shape, etc. with a molding die a Conventional
11 Mold 11a Male mold
Claims (5)
設定幅及び長さの発泡プラスチックシートの片面に両面粘着フィルムの片面を粘着すると共に他面の剥離紙はそのまま残してシートCを設け、
上記シートBとシートCを裁断して設定幅及び長さの短冊状若しくは帯状に形成し、そのシートBの接着フィルム面とシートCの発砲プラスチックシート面を重合すると共に、その一部分をシートCの発泡プラスチックシートが変質、溶融しない温度で加熱加圧し、接着フィルムの加熱溶融で接着してシートDを設け、
次に、横断面U形、C形、J形、Ω形等の雄型、雌型からなるプレス成形用型に上記のシートDをセットし、雌雄型間でシートBのテフロンフェルトシートの内面側に皺を生じないように、予め接着してある一部分を基点として展ばし馴らし扱くように押し付け、発泡プラスチックシートが変質、溶融しない温度で加熱し、接着フィルムの加熱溶融でシートBをシートCの発泡プラスチックシートに一体的に接着しつつU形、C形、J形、Ω形等に成形し、それを成形用型から取り外して、横断面U形、C形、J形、Ω形等の粉末シール片の原材Eを設け、
上記の原材Eを設定幅宛に切断して、若しくはシートCの剥離紙を残した状態で設定幅宛に切断して、U形、C形、J形、Ω形等の、回転軸の粉末シール片Aを設けるようにしたものである、
回転軸の粉末シール片の製造法。Adhesive film made of heat-melting synthetic resin is polymerized on one side of a set width and length of Teflon felt sheet, and it is heated and pressurized at a temperature higher than the temperature at which the foamed plastic sheet changes and melts, and the adhesive film is heated and melted. The two sheets are bonded together to provide a sheet B,
Adhering one side of the double-sided adhesive film to one side of the foamed plastic sheet of the set width and length and providing the sheet C leaving the release paper on the other side as it is,
The sheet B and the sheet C are cut to form a strip or a band having a set width and length, and the adhesive film surface of the sheet B and the foamed plastic sheet surface of the sheet C are polymerized, and a part of the sheet C is formed. The foamed plastic sheet is heated and pressed at a temperature at which the foamed plastic sheet does not change and melt, and the adhesive film is bonded by heating and melting to provide a sheet D.
Next, the above-mentioned sheet D is set in a press-molding die comprising male and female dies such as U-shaped, C-shaped, J-shaped, and Ω-shaped cross sections, and the inner surface of the Teflon felt sheet of the sheet B between the male and female dies. In order not to cause wrinkles on the side, the part that has been pre-bonded is spread as a starting point and pressed to handle and handle, and the foamed plastic sheet is heated at a temperature that does not change or melt, and the adhesive film heats and melts sheet B. Molded into U-shaped, C-shaped, J-shaped, Ω-shaped, etc. while integrally adhering to the foamed plastic sheet of sheet C, removed from the molding mold, and cross-sectional U-shaped, C-shaped, J-shaped, Ω Providing raw material E of powder seal pieces of shape, etc.
Cut the raw material E to the set width or cut to the set width while leaving the release paper of the sheet C, and rotate the rotating shaft such as U shape, C shape, J shape, Ω shape, etc. A powder seal piece A is provided.
A method for producing powder seal pieces for rotating shafts.
また、シートCは、設定幅及び長さの発泡プラスチックシートの片面に両面粘着フィルムの片面を粘着すると共に他面の剥離紙はそのまま残し、それを裁断して設定幅及び長さの短冊状若しくは帯状に形成するか、若しくは、予め設定幅及び長さの短冊状若しくは帯状に形成した発泡プラスチックシートの片面に同形同大の両面粘着フィルムの片面を粘着すると共に他面の剥離紙はそのまま残して設けたものである、
請求項1の回転軸の粉末シール片の製造法。The sheet B is obtained by adhering an adhesive film to one side of a Teflon felt sheet having a set width and length, and then cutting it to form a strip or a band having a set width and length, or by setting a preset width and length in advance. It is provided by adhering an adhesive film of the same shape and size to one side of a Teflon felt sheet formed in the shape of a strip or strip,
Further, the sheet C adheres one side of the double-sided pressure-sensitive adhesive film to one side of the foamed plastic sheet having a set width and length, and leaves the other side of the release paper as it is, and cuts it into a strip shape having a set width and length or Adhere one side of a double-sided adhesive film of the same shape and size to one side of a foamed plastic sheet that has been formed into a strip shape or formed in a strip shape or strip shape with a preset width and length in advance and leave the release paper on the other side as it is Are provided,
The manufacturing method of the powder seal piece of the rotating shaft of Claim 1.
発泡プラスチックシートの片面に両面粘着フィルムの片面を粘着すると共に他面の剥離紙はそのまま残してシートCを設け、
上記シートBとシートCを、シートBの接着フィルム面とシートCの発砲プラスチックシート面を重合し、その一部分を接着フィルムの加熱溶融で接着してシートDを設け、
横断面U形、C形、J形、Ω形等の雄型、雌型からなるプレス成形用型に上記のシートDをセットし、雌雄型間で加熱加圧し、接着フィルムの加熱溶融でシートBをシートCの発泡プラスチックシート面に一体的に接着しつつU形、C形、J形、Ω形等に成形し、それを成形用型から取り外して横断面U形、C形、J形、Ω形等の粉末シール片の原材Eを設け、
上記の原材Eを設定幅宛に切断して、若しくはシートCの剥離紙を残した状態で設定幅宛に切断して、U形、C形、J形、Ω形等の、回転軸の粉末シール片Aを設けるようにしたものである、
請求項1の回転軸の粉末シール片の製造法。 An adhesive film made of a heat-melting synthetic resin is integrally bonded to one side of a Teflon felt sheet to provide a sheet B ,
Adhering one side of the double-sided adhesive film to one side of the foamed plastic sheet and leaving the release paper on the other side as it is , providing the sheet C ,
The sheet B and the sheet C are polymerized on the adhesive film surface of the sheet B and the foamed plastic sheet surface of the sheet C, and a part thereof is adhered by heating and melting the adhesive film to provide the sheet D.
The above sheet D is set in a press-molding die composed of male and female dies such as U-shaped, C-shaped, J-shaped, and Ω-shaped cross sections, heated and pressed between the male and female dies, and the sheet is obtained by heating and melting the adhesive film. U-shaped with integrally bonded to the foamed plastic sheet surface of the sheet B C, C-shaped, J-shaped, molded into Ω shape or the like, the horizontal cross-sectional U-shaped remove it from the mold, C-shaped, J-shaped The raw material E for powder seal pieces such as Ω type is provided ,
Cut the raw material E to the set width or cut to the set width while leaving the release paper of the sheet C, and rotate the rotating shaft such as U shape, C shape, J shape, Ω shape, etc. A powder seal piece A is provided.
The manufacturing method of the powder seal piece of the rotating shaft of Claim 1.
まず、テフロンフェルトと接着フィルムを重合すると共に、発泡プラスチックが変質、溶融する以上の高い温度で加熱加圧し、接着フィルムの加熱溶融で両者を一体的に接着し、
次で、上記のテフロンフェルトと接着フィルムを一体的に接着したものと発泡プラスチックを接着フィルムを中間にして重合し、発泡プラスチックが変質、溶融せず、接着フィルムは溶融する温度で加熱加圧して、両者を一体的に接着するようにしたものである、
テフロンフェルトと発泡プラスチックの接着方法。When Teflon felt and foamed plastic are bonded firmly and integrally by heat-melting adhesive film made of heat-melting synthetic resin,
First, Teflon felt and adhesive film are polymerized, and the foamed plastic is altered and melted and heated and pressurized at a temperature higher than it melts.
Next, polymerize the Teflon felt and adhesive film integrally bonded to the foamed plastic with the adhesive film in the middle, and the foamed plastic will not be altered or melted. , Both are bonded together,
Bonding method of Teflon felt and foamed plastic.
まず、テフロンフェルトと接着フィルムを重合すると共に、後記発泡プラスチックが変質、溶融する以上の高い温度で加熱加圧し、接着フィルムの加熱溶融で両者を一体的に接着し、
次で、上記のテフロンフェルトと接着フィルムを一体的に接着したものと発泡プラスチックを接着フィルムを中間にして重合し、その一部分例えば一方の側縁等を発泡プラスチックが変質、溶融せず、接着フィルムは溶融する温度で加熱加圧して接着した後、そのものを成形用型によって発泡プラスチックが変質、溶融せず、接着フィルムは溶融する温度で加圧加熱して両者を一体的に接着すると同時にU形その他の形状に成形するようにしたものである、
テフロンフェルトと発泡プラスチックの接着及び成形方法。Teflon felt and foamed plastic are firmly and integrally bonded by fusion bonding of an adhesive film made of a heat-meltable synthetic resin, and in addition to being molded into a U shape or other shape by a press mold,
First, while polymerizing the Teflon felt and the adhesive film, after heating and pressing at a temperature higher than the foamed plastic is altered and melted, the two are integrally bonded by heating and melting the adhesive film,
Next, the above-mentioned Teflon felt and adhesive film integrally bonded to the foamed plastic are polymerized with the adhesive film in the middle, and the foamed plastic is not altered or melted at a part, for example, one side edge. After heating and pressurizing at the melting temperature, the foamed plastic will not be altered or melted by the mold, and the adhesive film will be heated and heated at the melting temperature to bond them together and at the same time U shape It is designed to be molded into other shapes.
Bonding and molding method of Teflon felt and foamed plastic.
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CN103453141A (en) * | 2013-08-22 | 2013-12-18 | 深圳创怡兴实业有限公司 | Printer/copying machine sealing brush structure and manufacturing method of printer/copying machine sealing brush structure |
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JP2003076145A (en) * | 2001-09-07 | 2003-03-14 | Sanwa Felt:Kk | Method of sealing toner leakage of toner container |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH03272368A (en) * | 1990-03-19 | 1991-12-04 | Nippon Pillar Packing Co Ltd | Annular packing and manufacture thereof |
JPH05181354A (en) * | 1991-12-27 | 1993-07-23 | Masuo Takeuchi | Powdery seal piece holder for rotating shaft |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH03272368A (en) * | 1990-03-19 | 1991-12-04 | Nippon Pillar Packing Co Ltd | Annular packing and manufacture thereof |
JPH05181354A (en) * | 1991-12-27 | 1993-07-23 | Masuo Takeuchi | Powdery seal piece holder for rotating shaft |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103453141A (en) * | 2013-08-22 | 2013-12-18 | 深圳创怡兴实业有限公司 | Printer/copying machine sealing brush structure and manufacturing method of printer/copying machine sealing brush structure |
CN103453141B (en) * | 2013-08-22 | 2016-03-30 | 深圳创怡兴实业有限公司 | Printing/duplicating machine sealing brush configuration and preparation method thereof |
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