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JPH06200059A - 半結晶質重合体を金属でヒートシールする方法 - Google Patents

半結晶質重合体を金属でヒートシールする方法

Info

Publication number
JPH06200059A
JPH06200059A JP5235043A JP23504393A JPH06200059A JP H06200059 A JPH06200059 A JP H06200059A JP 5235043 A JP5235043 A JP 5235043A JP 23504393 A JP23504393 A JP 23504393A JP H06200059 A JPH06200059 A JP H06200059A
Authority
JP
Japan
Prior art keywords
polymer
metal
film
heat
light
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.)
Withdrawn
Application number
JP5235043A
Other languages
English (en)
Inventor
Alfred Hagemeyer
アルフレート、ハーゲマイァ
Hartmut Dr Hibst
ハルトムート、ヒブスト
Dieter Baeuerle
ディーター、ボイエレ
Johannes Heitz
ヨハネス、ハイツ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emtec Magnetics GmbH
Original Assignee
BASF Magnetics GmbH
Emtec Magnetics GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BASF Magnetics GmbH, Emtec Magnetics GmbH filed Critical BASF Magnetics GmbH
Publication of JPH06200059A publication Critical patent/JPH06200059A/ja
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
    • C08J5/121—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives by heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/16—Surface shaping of articles, e.g. embossing; Apparatus therefor by wave energy or particle radiation, e.g. infrared heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1406—Ultraviolet [UV] radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1606—Ultraviolet [UV] radiation, e.g. by ultraviolet excimer lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/82—Testing the joint
    • B29C65/8207—Testing the joint by mechanical methods
    • B29C65/8223—Peel tests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B29C66/712—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined the composition of one of the parts to be joined being different from the composition of the other part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7377—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
    • B29C66/73773—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being semi-crystalline
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91941—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to Tg, i.e. the glass transition temperature, of the material of one of the parts to be joined
    • B29C66/91943—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to Tg, i.e. the glass transition temperature, of the material of one of the parts to be joined higher than said glass transition temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0838—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
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    • B29C65/1632—Laser beams characterised by the way of heating the interface direct heating the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/001—Joining in special atmospheres
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    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
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    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
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Abstract

(57)【要約】 【目的】 付着結合を形成する半結晶質材料の機械的性
質に不利な影響を及ぼすことなく、高められた温度で圧
力下に半結晶質重合体を金属でヒートシールする方法を
提供すること。 【構成】 結合を意図した表面を融蝕限界値を下廻るエ
ネルギー密度で１２０〜４００ｎｍの波長範囲内のエキ
シマーの分解によって生じたＵＶ光に暴露することによ
る半結晶質重合体を金属でヒートシールする方法。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、半結晶質重合体を金属
で圧力下に重合体のガラス転移温度と軟化温度との間の
温度で、先に重合体表面をＵＶ光に暴露することによっ
てヒートシールする方法に関する。
【０００２】
【従来の技術】数多くの重合体の高い機械的強度は、こ
れらの物質の半結晶質構造に基づくものである。このよ
うな半結晶質重合体は、非晶質領域と結晶質領域との混
合物から構成されている。結晶質領域は、実質的に秩序
立っており、かつ重合鎖が鎖を構成している種々の化学
的形成ブロックの鎖の折り畳みにより格子構造を形成し
ている領域を有する。これとは異なり、秩序立っていな
い非晶質領域内の重合鎖は、ランダムコイルの形であ
る。この半結晶質重合体が軟化温度を上廻って加熱され
る場合には、結晶質の配置は、Ｘ線回折の研究によって
示されるように破壊される。急速な冷却ならびに加熱処
理により、完全に非晶質の性質を有する１つの物質が生
じる。
【０００３】この方法は、既にポリエチレンテレフタレ
ート（ＰＥＴ）とクロムめっきされた鋼との貼合せに使
用された（H. Yokoya およびR. S. Poster, J. Appl.Po
lymer Sci.44(1992)，1679〜1683、参照）。ＰＥＴ材料
は、上記融点に加熱され、圧力下に鋼と結合される。し
かし、この方法は、半結晶質重合体の特殊な機械的性質
が重要でありかつ別の材料との結合後にも必要とされる
場合にいつでも使用できるとは限らない。
【０００４】また、非晶質形へのＰＥＴフィルムの変換
の効果は、摩擦係数の減少のためおよび自己付着のため
に使用された。特に、ＰＥＴの場合のように十分に高い
吸光係数を有する半結晶質重合体の場合には、適当な波
長のＵＶ光への暴露により、薄い非晶質表面層を生じる
ことができ、同時に鎖の分解およびオリゴマー成分の形
成を伴ないうる。このことは、厚さが数ナノメートルな
いし数百ナノメートルである薄い表面層を過熱すること
によって行なわれる。例えば、米国特許第４８６８００
６号明細書には、１９３〜２４８ｎｍの波長を有するエ
キシマーレーザーのＵＶ輻射線に暴露された半結晶質Ｐ
ＥＴフィルムおよび表面上での溶融によって形成された
準非晶質領域は、さらに結晶化を誘発する物質、例えば
アセトン、塩化メチレンまたはクロロホルムに暴露する
ことができ、こうして静摩擦抵抗および動摩擦抵抗が低
いポリエステルフィルム表面を得ることができることが
開示されている。同様の方法は、米国特許第４８２２４
５１号明細書の場合にも採用されている。この場合、非
晶質表面は、特に光の反射の減少、透過率の増大ならび
にフィルムの付着および自己付着の改善に役立つ。
【０００５】
【発明が解決しようとする課題】本発明の課題は、高め
られた温度で圧力下に半結晶質重合体を金属でヒートシ
ールする方法を得ることであり、この場合付着結合を形
成する半結晶質材料の機械的性質は、不利な影響を及ぼ
されない。
【０００６】
【課題を解決するための手段】この課題は、結合を意図
した表面を融蝕限界値を下廻るエネルギー密度で１２０
〜４００ｎｍの波長範囲内のエキシマーの分解によって
生じたＵＶ光に暴露する場合に、半結晶質重合体を金属
で圧力下に重合体のガラス転移温度と軟化温度との間の
温度で、結合を意図した重合体表面をＵＶ光に暴露する
ことによりヒートシールする方法によって達成されるこ
とが見い出された。
【０００７】この新規方法の好ましい実施態様の場合、
ＵＶ輻射線は、輻射源としてのＵＶレーザーによって行
なわれ、この場合ＵＶレーザーは、殊に波長が２４８ｎ
ｍ（ＫｒＦ）または３０８ｎｍ（ＸｅＣｌ）であるエキ
シマーレーザーである。
【０００８】このようなエキシマーレーザーは公知であ
る。エキシマーレーザーが新規方法に使用される場合に
は、反復率は１〜１０００Ｈｚであり、かつ適当なパル
ス長は１０〜１００ｎｓである。
【０００９】新規方法の別の好ましい実施態様の場合、
ＵＶ輻射線は、輻射源としての非干渉ＵＶエキシマー蛍
光灯によって行なわれ、この場合波長は、殊に１７２ｎ
ｍ（Ｘｅ2 ）、２２２ｎｍ（ＫｒＣｌ）または３０８ｎ
ｍ（ＸｅＣｌ）である。
【００１０】ＵＶ輻射線の定義された波長範囲内で新規
方法による輻射線に重合体を暴露することは、特殊な重
合体の融蝕限界値を下廻るエネルギー密度を使用して行
なわれ、かつ前記波長が使用される。この融蝕限界値
は、未だ融蝕が存在しないエネルギー密度として定義さ
れ、即ちこの場合には、物質の重大な除去は未だ存在し
ていない。融蝕率を測定するために、融蝕率は種々のエ
ネルギー密度で測定される。融蝕率を使用したエネルギ
ー密度に対して片対数的にプロットした場合には、外挿
法を行なった後のエネルギー密度の軸線との交差点は、
融蝕限界値として定義される。ＵＶ源の融蝕率は、例え
ばＵＶ輻射線に暴露されるアパーチュアをレンズで重合
体上にピント調節することによって定められ、この場合
には、種々の深さの円形の孔がＵＶ光のエネルギー密度
に依存して重合体表面内に形成される。融蝕限界値は、
特に簡単な方法でＵＶレーザーを使用して測定すること
ができる。このために、測定された腐蝕率は、重合体内
の孔の特殊な深さとパルス数との比として第１に定めら
れたものである。この値は、エネルギー密度の対数に対
してプロットされたものであり、即ちパルスエネルギー
と支持体中の孔の面積との比である。更に、外挿法によ
る線とエネルギー密度の軸線との交差点は、融蝕に対す
る限界値のエネルギー密度を定める。
【００１１】新規方法に適当な半結晶質重合体は、公知
である。ポリエチレンテレフタレート（ＰＥＴ）、ポリ
イミド（ＰＩ）、ポリエチレンナフタレート（ＰＥ
Ｎ）、ポリアミド（ＰＡ）、ポリブチレンテレフタレー
ト（ＰＢＴ）、ポリアクリロニトリル（ＰＡＮ）、ポリ
−ｐ−フェニレン、ポリウレタン（ＰＵＲ）およびポリ
スルホン（ＰＳＵ）は、好ましい。
【００１２】これらの重合体に結合すべき金属は、主と
してＣｏ、Ｃｒ、Ｎｉ、Ｐｔまたはこれらの合金および
Ａｌ、Ｃｕ、Ｆｅ、鋼、Ａｇ、Ａｕ、Ｔｉ、Ｚｒ、Ｚｎ
またはＳｎである。
【００１３】新規方法を有利に使用する場合には、結合
すべき金属は、密着した薄い金属層の形である。このよ
うな金属層は、一般にコバルト含有またはコバルト／ク
ロム含有の層、例えばＣｏ−Ｎｉ−Ｃｒ層、Ｃｏ−Ｐｔ
層、Ｃｏ−Ｎｉ−Ｏ層、クロム１５〜３５原子％を含有
するＣｏ−Ｃｒ層、ニッケルを１０原子％を超えて含有
するコバルト／ニッケル層、またはニッケルを１０原子
％を超えて含有しかつ酸素を３〜４５原子％を超えて含
有するコバルト／ニッケル／酸素層である。しかし、鉄
を基礎とする相応する薄い金属層もよく知られている。
この層は、ＰＶＤ法によって、例えば蒸着、電子ビーム
蒸着、スパッタリング、イオンめっきまたは電子アーク
法による金属成分の塗布によって生成される。蒸着およ
びスパッタリングは好ましい。前記方法で製造されかつ
しばしば強磁性である金属層は、２０〜５００ｎｍの厚
さである。
【００１４】更に、前記重合体は、新規方法によって、
融蝕限界値よりも低いエネルギー密度を有するエキシマ
ーレーザーのＵＶ輻射線に暴露される。この限界値のエ
ネルギー密度は、波長に依存し、かつ種々の重合体にと
って異なるものである。ＰＥＴについては、一般に１０
〜２００ｍＪ／ｃｍ2 である。例えば、３０８ｎｍの波
長の際に限界値は約１７０ｍＪ／ｃｍ2 であるけれど
も、２４８ｎｍのエキシマーレーザーの波長の際にマイ
ラー（Mylar ）ＰＥＴフィルムの限界値エネルギーは、
約４０ｍＪ／ｃｍ2 である。新規方法を有利な方法で実
施するために、ＵＶエキシマーレーザーは、有利に使用
され、支持板は、減圧下または酸素、窒素、アルゴン、
アンモニアまたはフレオン雰囲気（１０００ミリバール
まで）中で少数のパルス、即ち単位面積当たり１〜２５
個のパルスに暴露される。
【００１５】新規方法の特に重要な適用は、例えば剥離
試験におけるヒートシールフィルムとしてのＵＶ輻射さ
れた半結晶質重合体フィルムの使用である。
【００１６】剥離試験は、硬質または可撓性の支持板上
での十分な厚さの上層の付着力を評価するための１つの
公知方法である。この試験の場合、被膜は、引張試験装
置中で掴み具によって掴まれ、かつ支持板から引き剥が
され、このために必要とされる剥離力が測定される。し
かし、数μｍのみまたは次微小範囲内の極めて薄い層の
場合には、この直接的な方法は、剥離試験に使用するこ
とができない。それというのも、引張試験装置の掴み具
によって直接に掴むには、層は薄すぎるからである。そ
れ故に、貼合せシート中に強行に引き入れる他の方法に
頼ることが必要である。
【００１７】薄い被膜の場合にしばしば使用される標準
試験は、スコッチテープ試験であり、この場合感圧自己
接着性テープ（スコッチテープまたはテサ（Tesa）フィ
ルム）は、被膜に対して粘着し、かつ次に剥離される。
しかし、この市販の自己接着性テープの接着力は、堅固
に付着している被膜を剥離しうるには不十分である。そ
の後に使用された補助フィルムの被膜に対する実質的に
改善された付着力は、ヒートシールフィルム（ホットメ
ルトフィルム）を使用することによって達成することが
できる。例えばプラスチック支持板上の薄い金属層の場
合には、ＥＡＡ剥離試験がしばしば使用される［De Puy
dt他，Surf. Interf. Anal. 12(1988),486］：このため
に、ＥＡＡヒートシールフィルム（Ethylene Acrylic
Acid,UCB S.A.社（Gent, Belgium 在）のVISTAFIX）
は、熱間プレス中で層系（例えば、可撓性の磁性薄膜媒
体）の金属側と貼り合わされる（１０５℃、接触圧力７
５ｋＮ／２０ｃｍ2 、２０秒）。次に、この貼合せシー
トは、幅１ｃｍのストリップに切断される。ＥＡＡフィ
ルムから離れた側、即ち支持体側は、両面自己接着性テ
ープにより硬質金属支持体（Ａｌシート）に貼り付けら
れる。引張試験装置中で、ＥＡＡフィルムは、掴み具中
で掴まれ、引張力が加えられる。層の平面に対して例え
ば１８０°の固定した角度で支持体から金属層を剥離す
るのに必要とされる力が測定される（１８０°ＥＡＡ剥
離試験）。剥離速度は、典型的に５０ｍｍ／分である。
ストリップの幅に対して標準化されたＮ／ｃｍでの剥離
力は、金属層の付着力の１つの測定値として記載され
る。こうして、金属と補助フィルムとの間のより良好な
接着強さ、ひいてはスコッチテープまたはテサフィルム
の場合よりもできるだけ高い剥離力が達成されるが、し
かし常用のヒートシールフィルムは、中位の内部強度お
よび機械的安定性をもつにすぎないという欠点を有し、
したがって極めて堅固に付着している被膜の場合には、
自己接着性フィルムは、直ちに拡大しすぎ、引張試験の
間に破断される。測定可能な最大剥離力、ひいてはＥＡ
Ａ剥離試験（薄い金属層）における上昇試験の限界は、
４〜５Ｎ／ｃｍであり、この値を上廻る場合には、ＥＡ
Ａフィルムの内部凝集力は過剰となる。
【００１８】薄い金属層の剥離試験を改善するために、
金属に対する接着層の十分に高い強度を適度の内部凝集
力と組み合わせる自己接着性フィルムを使用することは
必要なことである。配向されたＰＥＴフィルムは、機械
的に安定であり、かつ高い引張強さを有する強いフィル
ムであることが知られている。配向されたＰＥＴは、高
い内部凝集力を有するが、しかし半結晶質物質および高
分子量物質として直接に金属に直接にヒートシールする
ことができないかまたは溶接することができず、金属に
対する付着は、高められた温度での簡単な貼合せによっ
て達成することができない。従って、記載された問題
は、簡単で有利な方法で新規の方法によって解決するこ
とができる。
【００１９】次に、実施例につき本発明を詳説する。
【００２０】
【実施例】
実施例１ 蒸着によって施こされた厚さ２００ｎｍのＣｏ−Ｎｉ層
の接着力を、厚さ５０μｍのユピレックス（Upilex）５
０Ｒ ＰＩフィルム（Ube 社製）に対して試験するため
に、１８０°剥離試験を実施した。使用したヒートシー
ルフィルムは、半結晶質マイラー２００ＤＰＥＴフィル
ム（DuPont社製、Ｔg ＝７５℃）であり、これは、事前
に減圧下で２０ｍＪ／ｃｍ2 のエネルギー密度および６
個のパルスを有するＫｒＦエキシマーレーザー（２４８
ｎｍ）に暴露しておいた。この方法でＵＶによって予熱
されたＰＥＴフィルムを熱間プレス中で１０５℃および
１９０バールで２０秒間Ｃｏ−Ｎｉ被覆ユピレックス
（Upilex）フィルムの金属被覆された側に溶接した。次
に、ＰＥＴフィルムを１８０°の角度で剥離した。金属
層は、レーザーに暴露したＰＥＴフィルムと一緒にユピ
レックスフィルムから円滑に剥離することができた。
【００２１】参照試験において、暴露していないＰＥＴ
フィルムを上記と同じ条件下でＣｏ−Ｎｉ層に溶接する
ことを試みた。このことは、不可能であった。暴露され
ていないＰＥＴフィルムは、金属層に接着しなかった。
【００２２】もう１つの参照試験の場合には、１８０°
剥離試験の場合と同じＣｏ−Ｎｉ層（Uplex ５０Ｒ）を
用いて熱間プレス中で貼り合わされたＥＡＡフィルムを
剥離することを試みた。これも不可能であり；ＥＡＡフ
ィルムは、拡大しすぎ、かつ破断した。その理由は、付
着力がＥＡＡフィルムの凝集強さを上廻るからである。
【００２３】実施例２ マイラー２００ＤＰＥＴフィルムを空気中で３０分間５
ｍＷ／ｃｍ2 の出力密度を有するＫｒＣｌエキシマー蛍
光灯（２２ｎｍ）に暴露した。次に、このフィルムを厚
さ２００ｎｍのＣｏ−Ｎｉ層で被覆されたユピレックス
（Upilex）５０Ｒ ＰＩフィルムの金属側に熱間プレス
中で１２５℃で１９０バールで２０秒間溶接した。ＰＥ
Ｔフィルムは、剥離を試みた際にフィルムが破断する程
度に堅固にＣｏ−Ｎｉ層に付着していた。
【００２４】参照試験において、暴露していないＰＥＴ
フィルムを上記と同じ条件下でＣｏ−Ｎｉ被覆された同
じユピレックス５０Ｒフィルムに溶接することを試み
た。このことは、不可能であった。暴露されていないＰ
ＥＴフィルムは、熱間プレス後にＣｏ−Ｎｉ層に付着し
なかった。
【００２５】実施例３ Ｔg １２５℃、厚さ７μｍおよび結晶度約４０％を有す
るテイジン（Teijin）社の半結晶質テオネックス（Teon
ex）ＰＥＮフィルムを減圧下で単位面積当たり６．５個
のパルスを有するエキシマーレーザーからの２４８ｎｍ
のＵＶ光に暴露し、厚さ１００μｍのＡｌシート上に１
５０℃、即ちガラス転移温度を約２５℃上廻る温度で
７．５トン／２０ｃｍ2 で２０秒間圧縮した。剥離試験
において、入射エネルギー密度の関数として、次の結果
が得られた：暴露せず 貼り合わせたＰＥＮ
フィルムは容易に剥離することが可能 ２．６ｍＪ／ｃｍ2 容易に剥離することが可能 ５．０ｍＪ／ｃｍ2 容易に剥離することが可能 １０ｍＪ／ｃｍ2 部分的にのみ剥離することが可能 １５ｍＪ／ｃｍ2 部分的に剥離することが可能 ２０ｍＪ／ｃｍ2 もはや剥離不可能 ３０ｍＪ／ｃｍ2 剥離不可能 ４０ｍＪ／ｃｍ2 剥離不可能
───────────────────────────────────────────────────── フロントページの続き (72)発明者 アルフレート、ハーゲマイァ ドイツ連邦共和国、6700、ルートヴィヒス ハーフェン、アン、デァ、フロシュラヘ、 23 (72)発明者 ハルトムート、ヒブスト ドイツ連邦共和国、6905、シュリースハイ ム、ブラニヒシュトラーセ、23 (72)発明者 ディーター、ボイエレ オーストリア、4203、アルテンベルク、オ ーベルクラマーシュトラーセ、47 (72)発明者 ヨハネス、ハイツ ドイツ連邦共和国、7800、フライブルク、 ハンガー、ヴェーク、38

Claims (3)

    【特許請求の範囲】
  1. 【請求項１】 半結晶質重合体を金属で圧力下に重合体
    のガラス転移温度と軟化温度との間の温度で、結合を意
    図した重合体表面をＵＶ光に暴露することによってヒー
    トシールする方法において、結合を意図した表面を融蝕
    限界値を下廻るエネルギー密度で１２０〜４００ｎｍの
    波長範囲内のエキシマーの分解によって生じたＵＶ光に
    暴露することを特徴とする、半結晶質重合体を金属でヒ
    ートシールする方法。
  2. 【請求項２】 ＵＶ光への暴露をＵＶエキシマーレーザ
    ーを使用して実施する、請求項１記載の方法。
  3. 【請求項３】 ＵＶ光への暴露を非干渉ＵＶエキシマー
    蛍光灯を使用して実施する、請求項１記載の方法。
JP5235043A 1992-09-23 1993-09-21 半結晶質重合体を金属でヒートシールする方法 Withdrawn JPH06200059A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4231810.6 1992-09-23
DE4231810A DE4231810A1 (de) 1992-09-23 1992-09-23 Verfahren zum Heißverkleben von semikristallinen Polymeren mit Metallen

Publications (1)

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JPH06200059A true JPH06200059A (ja) 1994-07-19

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US (1) US5500459A (ja)
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DE (2) DE4231810A1 (ja)

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EP0589351B1 (de) 2000-06-14
US5500459A (en) 1996-03-19
DE4231810A1 (de) 1994-03-24
DE59310058D1 (de) 2000-07-20

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