JP5369081B2 - 燃料タンクの部品接合方法 - Google Patents
燃料タンクの部品接合方法 Download PDFInfo
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- JP5369081B2 JP5369081B2 JP2010270667A JP2010270667A JP5369081B2 JP 5369081 B2 JP5369081 B2 JP 5369081B2 JP 2010270667 A JP2010270667 A JP 2010270667A JP 2010270667 A JP2010270667 A JP 2010270667A JP 5369081 B2 JP5369081 B2 JP 5369081B2
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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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
- B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
- B29C66/53245—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
- B29C66/53246—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers
- B29C66/53247—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers said spouts comprising flanges
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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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
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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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
- B29C65/2007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by the type of welding mirror
- B29C65/203—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by the type of welding mirror being several single mirrors, e.g. not mounted on the same tool
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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
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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
- B29C66/114—Single butt 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
- B29C66/70—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
- B29C66/72—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 structure of the material of the parts to be joined
- B29C66/723—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 structure of the material of the parts to be joined being multi-layered
- B29C66/7234—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 structure of the material of the parts to be joined being multi-layered comprising a barrier layer
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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
-
- 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
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
- B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
- B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
-
- 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
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
- B29C66/81425—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being stepped, e.g. comprising a shoulder
-
- 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
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7172—Fuel tanks, jerry cans
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Description
図1に示すように、燃料タンク1は、タンク本体10と、タンク本体10の上面に形成された開口16を塞ぐようにタンク本体10に接合された付属部品としてのベントバルブ20とを有している。
次に、図5を参照して上記実施形態の変形例を説明する。なお、図5は、上記実施形態の図4に対応するものであり、本変形例においても図2および図3に関連して説明した手順に変更はないため、重複する説明は省略する。本変形例においては、図2および図3の手順と平行して、図5の(F)に示すように、蓋部22のタンク本体10との接合面(筒状部の下面22a)に、2色成形により内側にHCバリア部分23が環状に配置されるとともに、HCバリア部分23の外側にHCバリア部分23よりも下方へ突出した環状の加熱溶着可能部分24が配置されたベントバルブ20を用意する。そして、図5の(G)に示すように、蓋部22の下面22aを熱板ヒータ41の平坦な上面に当接させて溶融させ、加熱溶着可能部分24の溶融材をHCバリア部分23の下方へ回り込ませ、その環状の端面を覆わせる。
次に、図6〜図9を参照して第2実施形態を説明する。なお、第1実施形態と同様の部材には同一の符号を付し、重複する説明は省略する。以下の実施形態においても同様とする。
次に、図9を参照して第1実施形態の変形例を説明する。なお、図9は、第2実施形態の図8に対応するものであり、本変形例においても図2および図7に関連して説明した手順に変更はないため、重複する説明は省略する。本変形例においては、図2および図7の手順と平行して、図9の(F)に示すように、蓋部22のタンク本体10との接合面(筒状部の下面22a)に、2色成形により内側にHCバリア部分23が環状に配置されるとともに、HCバリア部分23の外側にHCバリア部分23よりも下方へ突出した環状の加熱溶着可能部分24が配置され、且つ蓋部22の下面における高い側(タンク外側)に露出した加熱溶着可能部分24がHCバリア部分23よりも下方へ突出したベントバルブ20を用意する。そして、図9の(G)に示すように、加熱溶着可能部分24の段差に対応する高低差の段差を上面に有する熱板ヒータ41を用意したうえで、熱板ヒータ41の上面に蓋部22の下面22aを当接させて溶融させ、加熱溶着可能部分24の溶融材をHCバリア部分23の下方へ回り込ませ、その環状の端面を覆わせる。
次に、図10を参照して、第3実施形態に係る燃料タンク1の部品接合方法を説明する。なお、ここで用いるタンク本体10の構造および製造方法は第2実施形態と同一である。
10 タンク本体
11 内層
12 HCバリア層
13 再生層
14 加熱溶着可能層
15 環状壁部
15a 端面
15b 内周面
16 開口
18 環状膨出部
19 ドーム部(凸部)
20 ベントバルブ(付属部品)
22 蓋部
22a 下面(タンク本体との接合面)
23 HCバリア部分
24 加熱溶着可能部分
31 第1環状溶着部
32 第2環状溶着部
33 第3環状溶着部
41 熱板ヒータ
41a 外側熱板ヒータ(第1熱板ヒータ)
41b 内側熱板ヒータ(第2熱板ヒータ)
42 環状凸条
43 環状凸部
Claims (7)
- 燃料を収容する内層、HCバリア層、再生材からなる再生層、および加熱溶着可能層が内側からこの順に配置されたタンク本体に付属部品を接合するための燃料タンクの部品接合方法であって、
端面がタンク外方へ向いて突出するとともに内周面が開口を形成する環状壁部を有する前記タンク本体を用意するステップと、
前記環状壁部の端面に露出するHCバリア層に整合する位置にHCバリア部分が環状に配置されるとともに、当該HCバリア部分の外側に前記管状壁部の前記端面よりも大きな加熱溶着可能部分が配置された前記付属部品を用意するステップと、
熱板ヒータを用意するステップと、
前記熱板ヒータを前記タンク本体の外面に押し当て、前記環状壁部の溶融物が周囲に流れ出ないように、前記環状壁部の端面と当該環状壁部の周囲の前記加熱溶着可能層とを溶融させるタンク本体溶融ステップと、
前記HCバリア部分が前記環状壁部の端面におけるHCバリア層と整合するように前記付属部品を配置し、前記加熱溶着可能部分を前記環状壁部の周囲の加熱溶着可能層に溶着させる溶着ステップと
を有することを特徴とする燃料タンクの部品接合方法。 - 前記熱板ヒータを用意するステップでは、その内周側形状が前記環状壁部の外周側形状よりも大きな環状凸条を有するように前記熱板ヒータを形成し、
前記タンク本体溶融ステップでは、前記環状凸条が前記環状壁部を囲繞するように前記熱板ヒータを前記タンク本体の外面に押し当て、前記環状壁部の溶融物を前記環状凸条で堰き止めることを特徴とする、請求項1に記載の燃料タンクの部品接合方法。 - 前記タンク本体溶融ステップは、
前記環状壁部の周囲において前記加熱溶着可能層を溶融させる第1タンク本体溶融ステップと、
前記第1タンク本体溶融ステップの後に、前記環状壁部の端面において前記加熱溶着可能層を溶融させる第2タンク本体溶融ステップとを有することを特徴とする、請求項1に記載の燃料タンクの部品接合方法。 - 前記熱板ヒータを用意するステップでは、その内周側形状が前記環状壁部の外周側形状よりも大きく且つ前記環状壁部よりも高い環状凸部を有するように前記熱板ヒータを形成し、
前記第1タンク本体溶融ステップは、前記環状凸部が前記環状壁部を囲繞するように前記熱板ヒータをタンク内方へ移動させ、前記環状凸部の先端面を前記タンク本体の外面に当接させて前記加熱溶着可能層を溶融させるものであり、
前記第2タンク本体溶融ステップは、前記熱板ヒータを更にタンク内方へ移動させ、前記熱板ヒータを前記環状壁部の端面に当接させて前記加熱溶着可能層を溶融させるものであることを特徴とする、請求項3に記載の燃料タンクの部品接合方法。 - 前記熱板ヒータを用意するステップでは、環状を呈し、その内周側形状が前記環状壁部の外周側形状よりも大きな第1熱板ヒータと、前記第1熱板ヒータの内側に配置される第2熱板ヒータとを有するように前記熱板ヒータを形成し、
前記第1タンク本体溶融ステップは、前記第1熱板ヒータをタンク内方へ移動させ、前記環状壁部を囲繞させた状態で前記タンク本体の外面に当接させて前記加熱溶着可能層を溶融させるものであり、
前記第2タンク本体溶融ステップは、前記第2熱板ヒータをタンク内方へ移動させ、前記環状壁部の端面に当接させて前記加熱溶着可能層を溶融させるものであることを特徴とする、請求項3に記載の燃料タンクの部品接合方法。 - 前記付属部品を用意するステップでは、前記加熱溶着可能部分が前記HCバリア部分よりも突出するように前記付属部品を形成し、
熱板ヒータを前記付属部品に押し当て、前記加熱溶着可能部分を溶融させて前記HCバリア部分の環状の端面を覆わせる付属部品溶融ステップを更に有し、
前記溶着ステップでは、前記HCバリア部分と前記環状壁部の端面におけるHCバリア層との間に溶融した前記加熱溶着可能部分を介在させたことを特徴とする、請求項1〜請求項5のいずれか一項に記載の燃料タンクの部品接合方法。 - 前記タンク本体を用意するステップは、
タンク外方へ向けて突出する凸部を有するように前記タンク本体を成形するステップと、
前記凸部を切断除去することにより、前記タンク本体に前記環状壁部を形成するステップとを有することを特徴とする、請求項1〜請求項6のいずれか一項に記載の燃料タンクの部品接合方法。
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