JP2006036848A - Method for treating hardly adhesive base material and product obtained thereby - Google Patents

Method for treating hardly adhesive base material and product obtained thereby Download PDF

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JP2006036848A
JP2006036848A JP2004215963A JP2004215963A JP2006036848A JP 2006036848 A JP2006036848 A JP 2006036848A JP 2004215963 A JP2004215963 A JP 2004215963A JP 2004215963 A JP2004215963 A JP 2004215963A JP 2006036848 A JP2006036848 A JP 2006036848A
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adhesive
gas
processing
hardly
substrate
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Shingo Kuniya
晋吾 國谷
Tomohiko Fukumitsu
智彦 福光
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Air Water Inc
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Air Water Inc
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    • 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
    • B29C66/71—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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for treating poorly adhesive base materials in which adhesion with adhesives can be improved and this effect can last for a long period of time, and to provide products obtained thereby. <P>SOLUTION: Products with improved adhesion with adhesives are obtained by bringing poorly adhesive base materials having poor adhesion with adhesives into contact with a processing gas containing a fluorine gas. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、接着剤との接着性が悪い難接着性基材の接着剤接着性を向上させる、難接着性基材の処理方法およびそれによって得られた製品に関するものである。   The present invention relates to a method for treating a difficult-to-adhere substrate that improves the adhesive-adhesive property of a difficult-to-adhere substrate having poor adhesion to an adhesive, and a product obtained thereby.

従来より、例えば、モバイル用精密機器（パソコン，オーディオ機器，携帯電話等）には、外部からの衝撃を緩衝するために、衝撃吸収材が所定箇所に使用されている。そして、その衝撃吸収材の材料としては、衝撃吸収性に優れるとともに、柔軟性を有し様々な形状への追従性に優れることから、シリコーン等の軟質プラスチックが賞用されている。   2. Description of the Related Art Conventionally, for example, in a mobile precision device (a personal computer, an audio device, a mobile phone, etc.), an impact absorbing material is used at a predetermined location in order to buffer an external impact. As a material for the shock absorbing material, soft plastics such as silicone are awarded because they are excellent in shock absorbing property and have flexibility and followability to various shapes.

しかしながら、上記シリコーン等の軟質プラスチックは、接着剤との接着性が悪いため、接着剤で直接接着することができない。このため、上記モバイル用精密機器では、その衝撃吸収材を接着剤で接着するのではなく、ねじ締め，はめ込み等によって所定箇所に取り付けている。または、接着剤を用いる場合は、上記衝撃吸収材に、接着剤との接着性の良い異種材を成形により貼り合わせ、その異種材を介して接着剤で接着して取り付けている。   However, soft plastics such as silicone cannot be directly bonded with an adhesive because of their poor adhesion to the adhesive. For this reason, in the said precision apparatus for mobiles, the impact-absorbing material is not bonded with an adhesive, but is attached to a predetermined location by screwing, fitting, or the like. Alternatively, when an adhesive is used, a different material having good adhesiveness to the adhesive is bonded to the shock absorbing material by molding, and the different material is adhered and attached with the adhesive.

また、上記モバイル用精密機器では、薄形化，軽量化が要求されているため、上記衝撃吸収材の取り付け構造が大がかりになる上記ねじ締め，はめ込み等は採用し難い。また、上記異種材の貼り合わせは、衝撃吸収性能が劣るため、採用し難い。したがって、上記モバイル用精密機器の薄形化，軽量化の要求に応えるとともに、上記衝撃吸収材の衝撃吸収性能を発揮させるためには、衝撃吸収材を接着剤または両面テープで直接接着する必要がある。   In addition, since the mobile precision device is required to be thin and light, it is difficult to adopt the screw tightening, fitting, or the like, which requires a large mounting structure of the shock absorber. Further, the bonding of the different materials is difficult to adopt because of its poor shock absorption performance. Therefore, it is necessary to directly bond the shock absorber with an adhesive or double-sided tape in order to meet the demands for thinning and light weight of the above-mentioned precision equipment for mobile and to exert the shock absorbing performance of the shock absorber. is there.

一方、シリコーンゴムも接着性が悪く、そのシリコーンゴムをプラスチック部品に接着させる方法が提案されている（特許文献１参照）。この方法は、プラスチック部品側に紫外線を照射した後、その照射部分に硬化性液状シリコーンゴムを塗布する方法である。
特許第３０４７６５５号公報 On the other hand, silicone rubber also has poor adhesion, and a method for adhering the silicone rubber to a plastic part has been proposed (see Patent Document 1). This method is a method of applying a curable liquid silicone rubber to the irradiated part after irradiating the plastic part side with ultraviolet rays.
Japanese Patent No. 3047655

そこで、上記シリコーン等の軟質プラスチックからなる衝撃吸収材に対する接着剤の接着性を向上させる方法として、上記衝撃吸収材に紫外線を照射する方法が考えられる。しかしながら、本発明者らが、実際に、シリコーンからなる衝撃吸収材に様々な波長の紫外線を照射したが、接着剤との接着性は、少ししか向上しない。しかも、その効果は持続せず、すぐに接着剤との接着性は元の悪い状態に戻った。当然に、そのシリコーンからなる衝撃吸収材は、被接着部材に接着されなかった。   Therefore, as a method for improving the adhesiveness of the adhesive to the impact absorbing material made of soft plastic such as silicone, a method of irradiating the impact absorbing material with ultraviolet rays can be considered. However, although the present inventors actually irradiated ultraviolet rays having various wavelengths to the impact absorbing material made of silicone, the adhesiveness with the adhesive is improved only slightly. Moreover, the effect did not last, and the adhesiveness with the adhesive immediately returned to the original bad state. Naturally, the impact absorbing material made of silicone was not bonded to the adherend.

本発明は、このような事情に鑑みなされたもので、接着剤との接着性が向上し、その効果が長期にわたって持続するようにできる、難接着性基材の処理方法およびそれによって得られた製品の提供をその目的とする。   The present invention has been made in view of such circumstances, and has improved adhesiveness with an adhesive, and the effect of maintaining the effect over a long period of time, and a method for treating a hardly-adhesive substrate obtained by the method. Its purpose is to provide products.

上記の目的を達成するため、本発明は、接着剤との接着性が悪い難接着性基材に、フッ素ガスを含有する処理ガスを接触させることにより、上記接着剤との接着性を向上させる難接着性基材の処理方法を第１の要旨とし、それによって得られた製品を第２の要旨とする。   In order to achieve the above object, the present invention improves the adhesion to the adhesive by bringing a treatment gas containing fluorine gas into contact with a difficult-to-adhere substrate having poor adhesion to the adhesive. The processing method of a difficult-to-adhere base material is the first gist, and the product obtained thereby is the second gist.

本発明者らは、接着剤との接着性が悪い難接着性基材の接着剤接着性を向上させるべく、鋭意研究を重ねた。その研究の過程で、接着剤との接着性が悪い難接着性基材に、フッ素ガスを接触させると、その接着剤が容易に接着することができるようになることを見出し、本発明に到達した。   The inventors of the present invention have intensively studied in order to improve the adhesiveness of a difficult-to-adhere base material having poor adhesiveness to the adhesive. In the course of that research, we found that when fluorine gas was brought into contact with a difficult-to-adhere substrate with poor adhesion to the adhesive, the adhesive could be easily bonded, and the present invention was reached. did.

接着剤との接着性が向上する理由は、明らかではないが、つぎの（１），（２）の各理由またはそれらが複合した理由であると推測される。
（１）難接着性基材とフッ素ガスとが接触すると、難接着性基材の材料を示す構造式の水素原子や官能基（−ＯＨ基等）の一部がフッ素に置換され、この置換により、難接着性基材の表面層が改質し、その結果、接着剤が接着し易くなると推測される。
（２）難接着性基材とフッ素ガスとが接触すると、難接着性基材の縮合未反応分子が促進して重合（架橋）し（−ＯＨ基比率が低下し）、この重合（架橋）により、難接着性基材の表面層が改質し、その結果、接着剤が接着し易くなると推測される。 The reason why the adhesiveness with the adhesive is improved is not clear, but is presumed to be the following reasons (1) and (2) or a combination of them.
(1) When the hard-to-adhere substrate and the fluorine gas come into contact with each other, a part of hydrogen atoms and functional groups (such as —OH group) in the structural formula indicating the material of the hard-to-adhere substrate are replaced with fluorine. Thus, it is presumed that the surface layer of the difficult-to-adhere base material is modified, and as a result, the adhesive is easily adhered.
(2) When the hardly adhesive substrate and the fluorine gas come into contact with each other, the condensation unreacted molecules of the difficultly adhesive substrate are promoted and polymerized (crosslinked) (the -OH group ratio decreases), and this polymerization (crosslinked) Thus, it is presumed that the surface layer of the difficult-to-adhere base material is modified, and as a result, the adhesive is easily adhered.

また、フッ素ガスは、反応性に富み、しかも、他の原子と結合することにより安定化（低エネルギー化）する。このため、難接着性基材とフッ素ガスとが接触するだけで、上記置換および重合（架橋）が進み、これら置換等にエネルギーの注入を必要としない。また、フッ素は、常温常圧で気体（フッ素ガス）であるため、難接着性基材と接触させる際に、ガス化する必要がなく、そのガス化のためのエネルギーも不要である。   In addition, fluorine gas is highly reactive and is stabilized (lower energy) by bonding with other atoms. For this reason, the substitution and polymerization (crosslinking) proceed only by the contact of the hardly adhesive substrate and the fluorine gas, and energy injection is not required for these substitutions and the like. Further, since fluorine is a gas (fluorine gas) at normal temperature and pressure, it does not need to be gasified when it is brought into contact with the hardly adhesive substrate, and energy for the gasification is also unnecessary.

本発明の難接着性基材の処理方法によれば、接着剤との接着性が悪い難接着性基材に、フッ素ガスを含有する処理ガスを接触させることにより、難接着性基材の表面層を改質させ、接着剤との接着性を向上させることができる。しかも、フッ素ガスは、反応性に富むため、上記表面層の改質は、難接着性基材とフッ素ガスとが接触するだけで進む。   According to the method for treating a hardly-adhesive substrate of the present invention, the surface of the hardly-adhesive substrate is obtained by bringing a treatment gas containing fluorine gas into contact with a hardly-adhesive substrate having poor adhesion to an adhesive. The layer can be modified to improve the adhesion with the adhesive. Moreover, since the fluorine gas is rich in reactivity, the modification of the surface layer proceeds only by the contact between the hardly adhesive substrate and the fluorine gas.

そして、本発明の製品は、上記難接着性基材の処理方法により得られるため、接着剤との接着性が向上したものとなっている。このため、本発明の製品には、接着剤を容易に接着することができ、その結果、被接着部材に接着することができる。   And since the product of this invention is obtained by the processing method of the said hardly-adhesive base material, the adhesiveness with an adhesive agent has improved. For this reason, an adhesive agent can be easily adhere | attached on the product of this invention, As a result, it can adhere | attach to a to-be-adhered member.

つぎに、本発明の実施の形態を詳しく説明する。   Next, embodiments of the present invention will be described in detail.

本発明の難接着性基材の処理方法は、接着剤との接着性が悪い難接着性基材の接着剤接着性の向上を、フッ素ガスを含有する処理ガスに接触させることにより行っている。   The method for treating a difficult-to-adhere substrate of the present invention is carried out by bringing the adhesive adhesion of a difficult-to-adhere substrate having poor adhesion with an adhesive into contact with a treatment gas containing fluorine gas. .

より詳しく説明すると、上記難接着性基材としては、シリコーン等の軟質プラスチックまたはシリコーンゴム等の軟質ゴム等からなるものがあげられ、上記処理により得られる製品と同形状に形成されている。すなわち、上記難接着性基材は、上記製品において、接着剤との接着性が悪い状態のものである。   More specifically, examples of the hardly-adhesive substrate include those made of soft plastic such as silicone or soft rubber such as silicone rubber, and are formed in the same shape as the product obtained by the above treatment. That is, the difficult-to-adhere base material is in a state where the adhesiveness to the adhesive is poor in the product.

上記難接着性基材のうちシリコーンとしては、特に限定されるものではないが、例えば、下記の一般式〔α−ω−ジヒドロキシオルガノポリシロキサン：（Ｉ）〕で表されるモノマーが共重合の材料として用いられる。   Of the above difficult-adhesive substrates, the silicone is not particularly limited. For example, a monomer represented by the following general formula [α-ω-dihydroxyorganopolysiloxane: (I)] is copolymerized. Used as material.

そして、難接着性基材とフッ素ガスとを接触させると、上記一般式（Ｉ）において、水素原子や官能基（−ＯＨ基等）がフッ素に置換され、この置換により、難接着性基材の表面層が改質し、その結果、接着剤が接着し易くなると推測される。もしくは、難接着性基材とフッ素ガスとを接触させると、難接着性基材の縮合未反応分子が促進して重合（架橋）し、この重合（架橋）により、難接着性基材の表面層が改質し、その結果、接着剤が接着し易くなると推測される。または、これら推測が複合していると推測される。   Then, when the hardly adhesive substrate and the fluorine gas are brought into contact, in the general formula (I), a hydrogen atom or a functional group (-OH group or the like) is replaced with fluorine, and this replacement causes the hardly adhesive substrate. It is presumed that the surface layer of this material is modified, and as a result, the adhesive is easily adhered. Alternatively, when the hardly adhesive substrate and fluorine gas are brought into contact with each other, the condensation unreacted molecules of the hardly adhesive substrate are accelerated and polymerized (crosslinked), and this polymerization (crosslinking) results in the surface of the hardly adhesive substrate. It is assumed that the layer is modified and as a result, the adhesive becomes easier to adhere. Or it is estimated that these assumptions are compounded.

上記接着剤としては、難接着性基材の材料および被接着部材の材料によって、適宜選択され、例えば、ポリウレタン系接着剤，ウレタン系接着剤，合成ゴム系接着剤等があげられる。   The adhesive is appropriately selected depending on the material of the hard-to-adhere substrate and the material of the member to be adhered, and examples thereof include polyurethane adhesives, urethane adhesives, and synthetic rubber adhesives.

また、本発明の難接着性基材の処理方法を行う処理装置としては、難接着性基材とフッ素ガスを含有する処理ガスとを接触させることができれば、特に限定されるものではなく、例えば、づきのようなものが用いられる。すなわち、難接着性基材と処理ガスとを接触させる処理室と、この処理室に処理ガスを供給するガス供給設備と、上記処理室から排気される処理済みガスを除害する除害設備と、上記処理室内を真空排気しその排気したガスを上記除害設備に送る真空ポンプとを備えたものが用いられる。   In addition, the processing apparatus for performing the method for processing a hardly-adhesive substrate of the present invention is not particularly limited as long as the hardly-adhesive substrate and a processing gas containing fluorine gas can be brought into contact with each other. Something like that is used. That is, a processing chamber in which the hardly-adhesive substrate and the processing gas are brought into contact with each other, a gas supply facility for supplying the processing gas to the processing chamber, and a detoxification facility for removing the processed gas exhausted from the processing chamber A vacuum pump that evacuates the processing chamber and sends the exhausted gas to the abatement equipment is used.

より詳しく説明すると、上記処理装置において、処理室は、開閉扉を備えた圧力容器であり、その開閉扉を閉めることにより、処理室を密閉できるようになっている。さらに、上記処理室の内部には、処理対象となる難接着性基材を載置するための載置台が設置できるようになっている。難接着性基材の載置台への載置方法は、特に限定されないが、処理ガスとの接触が可能な限り難接着性基材の全面に近くなるように、載置台は網目状であることが好ましい。   More specifically, in the processing apparatus, the processing chamber is a pressure vessel provided with an opening / closing door, and the processing chamber can be sealed by closing the opening / closing door. Furthermore, a mounting table for mounting a difficult-to-adhere base material to be processed can be installed inside the processing chamber. The mounting method of the difficult-to-adhere base material on the mounting base is not particularly limited, but the mounting base must be mesh-shaped so that the contact with the processing gas is as close to the entire surface of the hard-adhesive base material as possible. Is preferred.

上記ガス供給設備には、処理ガスの成分であるフッ素ガス，不活性ガス等がそれぞれ充填された各ボンベが備えられている。   The gas supply facility is provided with each cylinder filled with fluorine gas, inert gas, and the like, which are components of the processing gas.

上記除害設備は、上記処理室から排気される処理済みガスを除害するための設備であるが、その除害設備が設けられている理由は、処理に用いたフッ素ガスが有害であり、そのフッ素ガスが上記処理済みガスに残存した状態のまま大気放出すると、人体等に悪影響を及ぼすからである。   The detoxification facility is a facility for detoxifying the treated gas exhausted from the processing chamber, but the reason for the detoxification facility is that the fluorine gas used in the treatment is harmful, This is because if the fluorine gas is released to the atmosphere while remaining in the treated gas, it adversely affects the human body or the like.

上記真空ポンプは、上記処理室内を真空排気するための設備であり、その真空排気により、その後に上記処理室に供給される上記処理ガスのフッ素ガス等の各成分濃度を明確に設定することができるようになっている。   The vacuum pump is a facility for evacuating the processing chamber. By the evacuation, the concentration of each component such as fluorine gas of the processing gas supplied to the processing chamber can be set clearly thereafter. It can be done.

このような処理装置を用いて、上記難接着性基材は、例えば、つぎのようにして処理することができる。すなわち、まず、処理対象となる難接着性基材を載置台に載置し、その載置台を処理室に入れる。ついで、処理室を密閉し、真空ポンプにより処理室内を真空排気する。つぎに、ガス供給設備から窒素ガス等の不活性ガスを処理室に供給し、処理室内をその不活性ガスの雰囲気にする。つづいて、再度、真空ポンプにより処理室内を真空排気した後、処理室内が所定の成分濃度の処理ガスとなるように、ガス供給設備からフッ素ガスや不活性ガス等を処理室に供給する。これにより、処理室内で、難接着性基材に、処理ガス中のフッ素ガスを接触させ、難接着性基材の粘着性を減少ないし除去する。そして、所定の処理時間が経過した後、処理室から処理済みガスを除害設備に排気しながら、ガス供給設備から処理室に窒素ガス等の不活性ガスを供給することにより、処理室内をその不活性ガスの雰囲気にする。その後、処理室を開放し、載置台を取り出す。その載置台には、表面層が改質されて接着剤との接着性が向上した製品が載置されている。   Using such a processing apparatus, the hardly adhesive substrate can be processed, for example, as follows. That is, first, a hard-to-adhere base material to be processed is placed on a mounting table, and the mounting table is placed in a processing chamber. Next, the processing chamber is sealed, and the processing chamber is evacuated by a vacuum pump. Next, an inert gas such as nitrogen gas is supplied from the gas supply facility to the processing chamber, and the processing chamber is filled with the inert gas atmosphere. Subsequently, after the processing chamber is evacuated again by a vacuum pump, fluorine gas, an inert gas, or the like is supplied from the gas supply facility to the processing chamber so that the processing chamber becomes a processing gas having a predetermined component concentration. As a result, the fluorine gas in the processing gas is brought into contact with the hardly-adhesive substrate in the processing chamber, thereby reducing or removing the tackiness of the hardly-adhesive substrate. Then, after a predetermined processing time has elapsed, an inert gas such as nitrogen gas is supplied from the gas supply facility to the processing chamber while exhausting the processed gas from the processing chamber to the detoxification facility. Use an inert gas atmosphere. Thereafter, the processing chamber is opened and the mounting table is taken out. On the mounting table, a product whose surface layer is modified and the adhesiveness with the adhesive is improved is mounted.

上記処理において、フッ素は、常温常圧で気体であるためガス化のためのエネルギーが不要であり、しかも、反応性に富み、他の原子と結合することにより、安定化（低エネルギー化）する。また、上記処理ガスにおいて、フッ素ガス以外のガスとしては、窒素，ヘリウム，アルゴン等の不活性ガスがあげられ、必要に応じて酸素，二酸化炭素等のガスを添加してもよい。   In the above treatment, since fluorine is a gas at normal temperature and pressure, energy for gasification is unnecessary, and it is highly reactive and stabilized (lower energy) by bonding with other atoms. . In the processing gas, examples of the gas other than fluorine gas include inert gases such as nitrogen, helium, and argon, and gases such as oxygen and carbon dioxide may be added as necessary.

また、上記接着剤との接着性の向上を同程度にする条件は、１つではなく、例えば、処理時間を同じにし、フッ素ガス濃度を高めても、それら処理条件によっては、上記接着剤との接着性の向上を同程度にすることができる。   In addition, the condition for improving the adhesiveness to the same degree is not one. For example, even if the treatment time is the same and the fluorine gas concentration is increased, depending on the treatment conditions, The improvement in adhesion can be made to the same extent.

上記フッ素ガスは、処理ガスに含有されていれば、その濃度は特に限定されるものではなく、また、上記処理圧力および処理時間は、そのフッ素ガス濃度に対応して適宜設定される。通常は、実用的な処理（処理時間，処理圧力，フッ素ガス濃度等が実用的な値をとる処理）となる観点から、フッ素ガス濃度を０．１〜２体積％の範囲に設定し、処理圧力を−０．１〜０．５ＭＰａ（ゲージ圧）の範囲に設定する。好適には、フッ素ガス濃度を０．５〜１体積％の範囲に設定し、処理圧力を０〜０．３ＭＰａ（ゲージ圧）の範囲に設定する。このような範囲のフッ素ガス濃度および処理圧力であれば、上記処理に要する時間は、処理対象となる難接着性基材の材料や量等にもよるが、通常、１〜３０分間程度で可能である。   If the said fluorine gas is contained in process gas, the density | concentration will not be specifically limited, Moreover, the said process pressure and process time are suitably set according to the fluorine gas density | concentration. Usually, from the viewpoint of practical processing (processing in which processing time, processing pressure, fluorine gas concentration, etc. take practical values), the fluorine gas concentration is set in the range of 0.1 to 2% by volume, and processing is performed. The pressure is set in the range of -0.1 to 0.5 MPa (gauge pressure). Preferably, the fluorine gas concentration is set in the range of 0.5 to 1% by volume, and the treatment pressure is set in the range of 0 to 0.3 MPa (gauge pressure). If the fluorine gas concentration and the processing pressure are in such a range, the time required for the above processing is usually possible in about 1 to 30 minutes, although it depends on the material and amount of the difficult-to-adhere base material to be processed. It is.

上記難接着性基材と処理ガスとを接触させるときの処理温度（処理室内の温度）は、処理対象となる難接着性基材の材料の耐熱温度（例えば、シリコーンであれば２００℃程度）以下であれば、特に限定されないが、加熱も冷却も不要にできる観点から、室温であることが好ましい。   The processing temperature (temperature in the processing chamber) when bringing the hardly-adhesive substrate and the processing gas into contact is the heat-resistant temperature of the material of the hardly-adhesive substrate to be processed (for example, about 200 ° C. for silicone). Although it will not specifically limit if it is below, it is preferable that it is room temperature from a viewpoint which can make neither heating nor cooling unnecessary.

なお、上記実施の形態では、難接着性基材の処理方法として、バッチ式の方法について説明したが、連続式でもよい。連続式の場合は、難接着性基材をベルトコンベアに載置するようにし、そのベルトコンベアが処理室を通過するようにする。そして、処理室内は、処理ガスの各成分濃度が一定となるようにする。しかも、その処理室において、ベルトコンベアの入口および出口から、処理ガスが外部に漏れないように、例えば、処理室内の圧力を外部の圧力よりも低く設定する等する。   In the above-described embodiment, the batch method has been described as the method for treating a hardly-adhesive substrate, but a continuous method may be used. In the case of the continuous type, the hardly adhesive substrate is placed on a belt conveyor so that the belt conveyor passes through the processing chamber. In the processing chamber, the concentration of each component of the processing gas is made constant. Moreover, in the processing chamber, for example, the pressure in the processing chamber is set lower than the external pressure so that the processing gas does not leak outside from the inlet and outlet of the belt conveyor.

また、例えば、上記難接着性基材の処理方法により得られた製品が、モバイル用精密機器（パソコン，オーディオ機器，携帯電話等）用の衝撃吸収材であれば、その衝撃吸収材は、接着剤や両面テープにより直接接着することができるようになるため、モバイル用精密機器には、ねじ締め，はめ込み等のための大がかりな構造が不要となり、モバイル用精密機器のさらなる薄形化，軽量化が可能となる。さらに、接着剤との接着性の良い異種材を衝撃吸収材に貼り合わせる必要もなくなるため、衝撃吸収材の衝撃吸収性能を充分に発揮させることができるようになる。   In addition, for example, if the product obtained by the above-mentioned processing method for difficult-to-adhere base material is a shock absorbing material for mobile precision equipment (PC, audio equipment, mobile phone, etc.), the shock absorbing material is bonded. Since it can be directly bonded with adhesives and double-sided tape, mobile precision equipment does not require a large structure for screw tightening, fitting, etc., making mobile precision equipment thinner and lighter Is possible. Furthermore, since it is not necessary to attach a different material having good adhesiveness to the adhesive to the impact absorbing material, the impact absorbing performance of the impact absorbing material can be fully exhibited.

つぎに、実施例について比較例と併せて説明する。   Next, examples will be described together with comparative examples.

〔実施例１〕
難接着性基材として、シリコーンゴム（イルマ社製、ＩＳ−８２５）を準備し、上記処理装置を用いて処理した。このとき、処理したもの（試験片）は、上記難接着性基材から切り取ったシート体〔１０ｍｍ×３０ｍｍ×５ｍｍ（厚み）〕とした。また、処理ガスとして、フッ素ガスの濃度が０．５体積％、二酸化炭素ガスの濃度が１５体積％、残りが窒素ガスのものを用いた。また、処理時間は５分間、処理温度は３０℃、処理圧力は０．１ＭＰａ（ゲージ圧）とした。 [Example 1]
Silicone rubber (manufactured by Irma, IS-825) was prepared as a hardly adhesive substrate and processed using the above-described processing apparatus. At this time, what was processed (test piece) was a sheet body [10 mm × 30 mm × 5 mm (thickness)] cut from the hardly adhesive substrate. Further, as the processing gas, a fluorine gas having a concentration of 0.5% by volume, a carbon dioxide gas having a concentration of 15% by volume, and the remainder being nitrogen gas was used. The treatment time was 5 minutes, the treatment temperature was 30 ° C., and the treatment pressure was 0.1 MPa (gauge pressure).

そして、処理された試験片の表面に、合成ゴム系接着剤（ノガワケミカル社製、Ｄｉａｂｏｎｄ）を塗布し、その試験片と同様の他の試験片の表面に接着した。その後、１時間放置した。   Then, a synthetic rubber adhesive (Diabond, manufactured by Nogawa Chemical Co., Ltd.) was applied to the surface of the treated test piece and adhered to the surface of another test piece similar to the test piece. Then, it was left for 1 hour.

〔実施例２〕
上記実施例１において、処理ガスとして、フッ素ガスの濃度が１体積％、二酸化炭素ガスの濃度が１５体積％、残りが窒素ガスのものを用いた。また、処理時間は３０分間とした。それ以外の処理条件および接着方法は上記実施例１と同様とした。 [Example 2]
In Example 1, the treatment gas used was one having a fluorine gas concentration of 1% by volume, a carbon dioxide gas concentration of 15% by volume, and the remainder being nitrogen gas. The processing time was 30 minutes. Other processing conditions and the bonding method were the same as those in Example 1 above.

〔実施例３〕
上記実施例１において、処理ガスとして、フッ素ガスの濃度が１体積％、酸素ガスの濃度が１５体積％、残りが窒素ガスのものを用いた。それ以外の処理条件は上記実施例１と同様とした。 Example 3
In Example 1, the treatment gas used was a fluorine gas concentration of 1% by volume, an oxygen gas concentration of 15% by volume, and the remainder being nitrogen gas. The other processing conditions were the same as in Example 1 above.

そして、処理された試験片の表面に、ウレタン系接着剤（コニシ社製、ＫＵ６６１／６６２）を塗布した。それ以外の接着方法は上記実施例１と同様とした。   And the urethane type adhesive agent (the product made by Konishi, KU661 / 662) was apply | coated to the surface of the processed test piece. Other bonding methods were the same as those in Example 1 above.

〔実施例４〕
上記実施例２と同様にして処理した後、実施例３と同様にして接着した。 Example 4
After processing in the same manner as in Example 2, bonding was performed in the same manner as in Example 3.

〔実施例５〕
上記実施例１において、処理ガスとして、フッ素ガスの濃度が１体積％、残りが窒素ガスのものを用いた。それ以外の処理条件および接着方法は上記実施例１と同様とした。 Example 5
In the above Example 1, a treatment gas having a fluorine gas concentration of 1% by volume and the remainder being nitrogen gas was used. Other processing conditions and the bonding method were the same as those in Example 1 above.

〔実施例６〕
上記実施例１において、処理ガスとして、フッ素ガスの濃度が０．１体積％、残りが窒素ガスのものを用いた。また、処理時間は３０分間とした。それ以外の処理条件および接着方法は上記実施例１と同様とした。 Example 6
In the above Example 1, a treatment gas having a fluorine gas concentration of 0.1% by volume and the remainder being nitrogen gas was used. The processing time was 30 minutes. Other processing conditions and the bonding method were the same as those in Example 1 above.

〔実施例７〕
上記実施例１において、処理ガスとして、フッ素ガスの濃度が２体積％、残りが窒素ガスのものを用いた。また、処理時間は１分間とした。それ以外の処理条件および接着方法は上記実施例１と同様とした。 Example 7
In the above Example 1, a treatment gas having a fluorine gas concentration of 2% by volume and the remainder being nitrogen gas was used. The processing time was 1 minute. Other processing conditions and the bonding method were the same as those in Example 1 above.

〔比較例１〕
上記実施例１における難接着性基材を未処理のままとしたもの（試験片）を比較例１とした。そして、その試験片を上記実施例１と同様にして接着した。 [Comparative Example 1]
The comparative example 1 was obtained by leaving the hardly adhesive substrate in Example 1 untreated (test piece). The test piece was bonded in the same manner as in Example 1 above.

〔比較例２〕
上記比較例１の試験片を上記実施例３と同様にして接着した。 [Comparative Example 2]
The test piece of Comparative Example 1 was bonded in the same manner as in Example 3.

〔接着力〕
上記実施例１〜７および比較例１，２において、接着させた試験片同士の接着力を測定した。この測定は、ＪＩＳ Ｋ６８４９に従って行った。そして、その結果を下記の表１に表記した。 [Adhesive strength]
In Examples 1 to 7 and Comparative Examples 1 and 2, the adhesive strength between the bonded test pieces was measured. This measurement was performed according to JIS K6849. The results are shown in Table 1 below.

表１の結果から、実施例１〜７では、試験片同士が接着されていることがわかる。   From the results in Table 1, it can be seen that in Examples 1 to 7, the test pieces are bonded to each other.

Claims (3)

接着剤との接着性が悪い難接着性基材に、フッ素ガスを含有する処理ガスを接触させることにより、上記接着剤との接着性を向上させることを特徴とする難接着性基材の処理方法。   Treatment of a hard-to-adhere substrate characterized by improving adhesiveness with the above-mentioned adhesive by bringing a processing gas containing fluorine gas into contact with a hard-to-adhere substrate having poor adhesiveness to the adhesive Method. 上記難接着性基材が、シリコーンからなるものである請求項１記載の難接着性基材の処理方法。   The method for treating a hardly adhesive substrate according to claim 1, wherein the hardly adhesive substrate is made of silicone. 上記請求項１または２記載の難接着性基材の処理方法によって得られることを特徴とする製品。   A product obtained by the method for treating a hardly adhesive substrate according to claim 1 or 2.
JP2004215963A 2004-07-23 2004-07-23 Method for treating hardly adhesive base material and product obtained thereby Withdrawn JP2006036848A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010140603A1 (en) * 2009-06-04 2010-12-09 ステラケミファ株式会社 Method for producing multilayer film
WO2020003961A1 (en) * 2018-06-25 2020-01-02 三菱電線工業株式会社 Silicone rubber molded body and production method for same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010140603A1 (en) * 2009-06-04 2010-12-09 ステラケミファ株式会社 Method for producing multilayer film
AU2010255001B2 (en) * 2009-06-04 2013-10-31 Stella Chemifa Corporation Method for producing multilayer film
JP5610637B2 (en) * 2009-06-04 2014-10-22 ステラケミファ株式会社 Method for producing laminated film
US9352511B2 (en) 2009-06-04 2016-05-31 Stella Chemifa Corporation Method for producing multilayer film
WO2020003961A1 (en) * 2018-06-25 2020-01-02 三菱電線工業株式会社 Silicone rubber molded body and production method for same
JP2020002183A (en) * 2018-06-25 2020-01-09 三菱電線工業株式会社 Silicone rubber molding and method for producing the same
JP7148919B2 (en) 2018-06-25 2022-10-06 三菱電線工業株式会社 Silicone rubber molding

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