JP5604867B2 - フィルム基材の接着方法 - Google Patents
フィルム基材の接着方法 Download PDFInfo
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- JP5604867B2 JP5604867B2 JP2009298261A JP2009298261A JP5604867B2 JP 5604867 B2 JP5604867 B2 JP 5604867B2 JP 2009298261 A JP2009298261 A JP 2009298261A JP 2009298261 A JP2009298261 A JP 2009298261A JP 5604867 B2 JP5604867 B2 JP 5604867B2
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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
- 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
- B29C65/1429—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 way of heating the interface
- B29C65/1432—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 way of heating the interface direct heating of the surfaces to be joined
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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
- 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
- B29C65/1429—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 way of heating the interface
- B29C65/1435—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 way of heating the interface at least passing through one of the parts to be joined, i.e. transmission welding
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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
- 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
- B29C65/1429—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 way of heating the interface
- B29C65/1445—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 way of heating the interface heating both sides of the joint
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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
- 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
- B29C65/1429—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 way of heating the interface
- B29C65/1454—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 way of heating the interface scanning at least one of the parts to be joined
- B29C65/1458—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 way of heating the interface scanning at least one of the parts to be joined once, i.e. contour welding
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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
- 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
- B29C65/1429—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 way of heating the interface
- B29C65/1464—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 way of heating the interface making use of several radiators
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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
- 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
- B29C65/1429—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 way of heating the interface
- B29C65/1464—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 way of heating the interface making use of several radiators
- B29C65/1467—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 way of heating the interface making use of several radiators at the same time, i.e. simultaneous welding
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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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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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
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
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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
- 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
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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
- B29C66/73—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
- B29C66/735—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 extensive physical properties of the parts to be joined
- B29C66/7352—Thickness, e.g. very thin
- B29C66/73521—Thickness, e.g. very thin of different thickness, i.e. the thickness of one of the parts to be joined being different from the thickness of the other part
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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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
- B29C66/83411—Roller, cylinder or drum types
- B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
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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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
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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
- B29C66/001—Joining in special atmospheres
- B29C66/0012—Joining in special atmospheres characterised by the type of environment
- B29C66/0014—Gaseous environments
- B29C66/00141—Protective gases
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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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- 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
- B29C66/73—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
- B29C66/73921—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 characterised by the materials of both parts being thermoplastics
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Description
異種材料からなる一対のフィルム基材を準備し、
少なくとも一方の前記フィルム基材の接着しようとする部分に電子線を照射し、
前記電子線が照射された部分のみを他方のフィルム基材に接着する、
ことを含んでなることを特徴とするものである。
<フィルム基材の準備>
2種の異なる材料からなるフィルム基材として、厚み25μmの二軸延伸ポリエチレンテレフタレートフィルム(エスペットT4102、東洋紡株式会社製)と、厚み80μmの未延伸直鎖状低密度ポリエチレンフィルム(エボリューSP2020、株式会社プライムポリマー製)を準備した。
二軸延伸ポリエチレンテレフタレートフィルムの未処理面と未延伸直鎖状低密度ポリエチレンフィルムとが対向するように互いのフィルムを重ね合わせた。次いで、カーテン型電子線照射装置(LB1023、株式会社アイ・エレクトロンビーム製)を用いて、下記の照射条件にて、積層フィルム表面にポリエチレンテレフタレートフィルム側から電子線を照射した。
電圧:165kV、電流値:3.9mA、照射線量:750kGy
装置内フィルム搬送速度:5m/分
装置内酸素濃度:100ppm以下
続いて、電子線照射した後すぐに、重ね合わせたフィルム上からゴム製のヒートロールにより、150℃、0.6Mpaの条件でフィルムの押圧を行った。
電子線の照射を下記の条件を代えた以外は実施例1と同様にして、異種材料からなるフィルムどうしの接着を行った。
電圧:165kV、電流値:3.9mA、照射線量:500kGy
電子線の照射を下記の条件を代えた以外は実施例1と同様にして、異種材料からなるフィルムどうしの接着を行った。
電圧:165kV、電流値:3.9mA、照射線量:250kGy
実施例1で用いた2種のフィルムと同じものを互いに重ね合わせ、フィルム上からゴム製のヒートロールにより、150℃、0.6Mpaの条件でフィルムの押圧を行った。
実施例1で用いた2種のフィルムと同じものを用意し、これらフィルムを、下記の組成のウレタン系接着剤を介して重ね合わせ、フィルム上からゴム製のヒートロールにより、150℃、0.6Mpaの条件でフィルムの押圧を行った。
<ウレタン接着剤組成>
主剤:RU0004(ロックペイント製)
硬化剤:H−1(ロックペイント製)
混合比率:主剤/硬化剤=7.47/1(重量比率)
溶剤:酢酸エチル
実施例1で用いた二種のフィルムと同じものを用意し、二軸延伸ポリエチレンテレフタレートフィルムの未処理面と未延伸直鎖状低密度ポリエチレンフィルムとが対向するように互いのフィルムを重ね合わせる前に、各フィルムの接着面側の両方に、カーテン型電子線照射装置(LB1023、株式会社アイ・エレクトロンビーム製)を用いて、下記の照射条件にて電子線を照射した後、互いを重ね合わせた。次いで、重ね合わせたフィルム上からゴム製のヒートロールにより、150℃、0.6Mpaの条件でフィルムの押圧を行った。
電圧:90kV、電流値:4.9mA、照射線量:750kGy
装置内フィルム搬送速度:5m/分
装置内酸素濃度:100ppm以下
電子線の照射を下記の条件を代えた以外は実施例1と同様にして、異種材料からなるフィルムどうしの接着を行った。
電圧:90kV、電流値:4.9mA、照射線量:500kGy
<フィルム基材の準備>
2種の異なる材料からなるフィルム基材として、幅170mm、長さ200mのロール状形態で供給される厚み25μmの二軸延伸ポリエチレンテレフタレートフィルム(エスペットT4102、東洋紡株式会社製)と、同サイズのロール状形態で供給される厚み80μmの未延伸直鎖状低密度ポリエチレンフィルム(エボリューSP2020、株式会社プライムポリマー製)を準備した。
上記のフィルムを用い、電子線の照射を下記の条件を代えた以外は実施例1と同様にして、異種材料からなるフィルムどうしの接着を行った。
電圧:145kV、電流値:10mA、照射線量:690kGy
装置内のWEB搬送ラフィルム:3m/分
装置内酸素濃度:100ppm以下
電子線の照射を下記の条件を代えた以外は実施例1と同様にして、異種材料からなるフィルムどうしの接着を行った。
電圧:145kV、電流値:5.2mA、照射線量:360kGy
電子線の照射を下記の条件を代えた以外は実施例1と同様にして、異種材料からなるフィルムどうしの接着を行った。
電圧:145kV、電流値:2.9mA、照射線量:200kGy
実施例1で用いた二種のフィルムと同じものを用意し、二軸延伸ポリエチレンテレフタレートフィルムの未処理面と未延伸直鎖状低密度ポリエチレンフィルムとが対向するように互いのフィルムを重ね合わせる前に、各フィルムの接着面側の両方に、ライン照射型低エネルギー電子線照射装置(EB−ENGINE、浜松フォトニクス株式会社製)を用いて、下記の照射条件にて電子線を照射した後、互いを重ね合わせた。次いで、重ね合わせたフィルム上からゴム製のヒートロールにより、150℃、0.6Mpaの条件でフィルムの押圧を行った。
電圧:70kV、電流値:1mA、照射線量:650kGy
装置内フィルム搬送速度:20mm/秒
装置内酸素濃度:100ppm以下
電子線の照射線量及びフィルム搬送速度を下記に変更した以外は実施例9と同様にして、異種材料からなるフィルムどうしの接着を行った。
電圧:70kV、電流値:1mA、照射線量:430kGy
装置内フィルム搬送速度:30mm/秒
<フィルム基材の準備>
2種の異なる材料からなるフィルム基材として、厚み25μmの二軸延伸ナイロンフィルム(エンブレム、東洋紡株式会社製)と、厚み80μmの未延伸直鎖状低密度ポリエチレンフィルム(エボリューSP2020、株式会社プライムポリマー製)を準備した。
二軸延伸ナイロンフィルムの未処理面と未延伸直鎖状低密度ポリエチレンフィルムとが対向するように互いのフィルムを重ね合わせる前に、各フィルムの接着面側の両方に、ライン照射型低エネルギー電子線照射装置(EB−ENGINE、浜松フォトニクス株式会社製)を用いて、下記の照射条件にて電子線を照射した後、互いを重ね合わせた。次いで、重ね合わせたフィルム上からゴム製のヒートロールにより、150℃、0.6Mpaの条件でフィルムの押圧を行った。
電圧:70kV、電流値:1mA、照射線量:650kGy
装置内のWEB搬送ライン速度:20mm/秒
装置内酸素濃度:100ppm以下
電子線の照射線量及びフィルム搬送速度を下記に変更した以外は実施例9と同様にして、異種材料からなるフィルムどうしの接着を行った。
電圧:70kV、電流値:1mA、照射線量:430kGy
装置内フィルム搬送速度:30mm/秒
実施例1〜12及び比較例1,2において得られた積層フィルムを幅15mmの短冊状になるように切り出し、引張試験機(テンシロン万能材料試験機RTC−1310A、ORIENTEC社製)を用いて、50mm/分の剥離速度にて接着強度試験を行った。なお、比較例1の試験片は、剥離試験を行うまでもなく、互いのフィルムが接着していなかった。評価結果は下記の表1に示される通りであった。
3 電子線照射装置
4 電子線
5 フィルム基材接触界面
6 ヒートローラ
7 支持ローラー
Claims (14)
- 異種材料からなるフィルム基材どうしを互いに接着する方法であって、
異種材料からなる一対のフィルム基材を準備し、
少なくとも一方の前記フィルム基材の接着しようとする部分に電子線を照射し、
前記一対のフィルム基材を重ね合わせた後に、加熱しながら両フィルム基材を押圧し、
前記電子線が照射された部分のみ両フィルム間に共有結合を形成して、一方のフィルムを他方のフィルム基材に接着する、
ことを含んでなることを特徴とする、方法。 - 前記一対のフィルム基材を重ね合わせた後に、いずれか一方のフィルム基材側から電子線照射を行う、請求項1に記載の方法。
- 前記一対のフィルム基材を重ね合わせる前に、いずれか一方のフィルム基材側から電子線照射を行う、請求項1に記載の方法。
- 前記フィルム基材の電子線を照射した側の面に、他方のフィルム基材を重ね合わせる、請求項3に記載の方法。
- 前記一対のフィルム基材を重ね合わせる前に、両方のフィルム基材に電子線を照射する、請求項1に記載の方法。
- 前記フィルム基材の電子線を照射した側の面どうしが対向するように、両方のフィルム基材を重ね合わせる、請求項5に記載の方法。
- 前記異種材料からなるフィルム基材が、ポリエチレンテレフタレート/ナイロン、ポリエチレンテレフタレート/ポリアミド、ポリエチレンテレフタレート/ポリエチレン、ポリエチレンテレフタレート/ポリプロピレン、ポリエチレン/ナイロン、ポリエチレン/ポリアミド、ポリプロピレン/ナイロン、ポリプロピレン/ポリアミド、エチレンビニルアセテート/ポリエチレン、エチレンビニルアセテート/ポリプロピレン、ポリビニルアルコール/ポリエチレン、ポリビニルアルコール/ポリプロピレン、エチレン−ビニルアルコール共重合体/ポリエチレン、およびエチレン−ビニルアルコール共重合体/ポリプロピレンから選択される組み合わせである、請求項1〜6のいずれか一項に記載の方法。
- 押圧をヒートローラで行う、請求項1に記載の方法。
- 前記一対のフィルム基材を重ね合わせて押圧した後に、いずれか一方のフィルム基材側から電子線照射を行う、請求項2に記載の方法。
- 前記電子線の照射強度が、25〜750kGyである、請求項1〜9に記載の方法。
- 前記電子線の照射を、30〜300kVの加速電圧において行う、請求項1〜10に記載の方法。
- 請求項1〜11のいずれか一項に記載の方法により異種材料からなるフィルムどうしを接着させた積層体。
- 請求項1〜11のいずれか一項に記載の方法を用いて包装体を製造する方法。
- 請求項13に記載の方法により得られた包装体。
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