JP4855120B2 - 密封容器の製造方法、容器密封システム及び蓋溶接機 - Google Patents
密封容器の製造方法、容器密封システム及び蓋溶接機 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- 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
- B29C65/1629—Laser beams characterised by the way of heating the interface
- B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B29C65/1629—Laser beams characterised by the way of heating the interface
- B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
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- 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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- B29C65/1664—Laser beams characterised by the way of heating the interface making use of several radiators
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- 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
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- B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
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- B29C65/7879—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined said parts to be joined moving in a closed path, e.g. a rectangular path
- B29C65/7882—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined said parts to be joined moving in a closed path, e.g. a rectangular path said parts to be joined moving in a circular path
- B29C65/7885—Rotary turret joining machines, i.e. having several joining tools moving around an axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/024—Thermal pre-treatments
- B29C66/0242—Heating, or preheating, e.g. drying
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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
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- 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
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
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- 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
- B29C66/65—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 with a relative motion between the article and the welding 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
- 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
- B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
- B29C65/1616—Near infrared radiation [NIR], e.g. by YAG lasers
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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
- B29C65/16—Laser beams
- B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
- B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
- B29C65/1619—Mid infrared radiation [MIR], e.g. by CO or CO2 lasers
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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
- B29C65/16—Laser beams
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- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
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- B29C66/8322—Joining or pressing tools reciprocating along one axis
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- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
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Description
サンプルNo.1,2,3,4では、専用に作製したPETボトル胴体及びPET製の蓋を使用した。また、蓋とボトル胴体との溶着予定箇所の蓋側に、市販の808nmの吸光度が約60%の黒色インクを塗布した。サンプルNo.1では蓋を予熱せず、蓋温度は15℃であった。サンプルNo.2,3,4では、蓋温度を30℃、50℃、60℃に予熱した。そして、容器を自転させながら、容器の側面から溶着予定箇所に向けた0.8J/mm2のレーザー照射によって溶接を行い、密封容器を作製した。
サンプルNo.5,6,7では、市販の200mlスチール缶胴体と専用に製作したPET製の蓋を使用した。また、蓋と缶胴体との溶着予定箇所の蓋側に、熱可塑性のシール剤(90℃以上で粘着性発現)を塗布した。サンプルNo.5では蓋を予熱せず、蓋温度は15℃であった。サンプルNo.6では、蓋を缶胴体の口部に載せた後、蓋と缶胴体の全体を温風で加熱して蓋を60℃に予熱した。サンプルNo.7では、蓋を缶胴体の口部に載せた後、蓋を温風で加熱して蓋を60℃に予熱した。そして、容器を自転させながら、容器の側面から溶着予定箇所に向けた0.8J/mm2のレーザー照射によって溶接を行い、密封容器を作製した。
作製した密封容器の底に孔を設け、その孔から0.15MPaの圧縮空気を注入し、蓋のシール性が維持されるか否かで密封性の有無を評価した。各10個のサンプルのうちシール性が全て維持された場合を密封性ありとし、各10個のサンプルのうち1個でもシール性が維持されなかった場合を密封性なしとした。
(サンプルa)
PETボトル胴体の口部に、直径27mm厚さ1mmのPET板を、口部の端部とPET板の表面が重なるように置いた。次に、そのPET板の上に、幅20mm厚さ0.35mmの短冊形のPETシートIIを、PET板の表面とPETシートIIの表面が重なるように置いた。なお、PETシートIIは、PETボトル胴体に相当する。次に、幅20mm厚さ0.35mmの短冊形のPETシートIの表面に、黒色インクを幅1mm長さ10mmで直線状に塗布した。次に、このPETシートIを、先のPETシートIIの上に、PETシートIIの表面とPETシートIの黒色インクが塗布された側の表面とが重なるように置いた。なお、PETシートIは、PET製の蓋に相当する。次に、PETボトル胴体の上方からPET板全体を包含する領域に向けた0.8J/mm2のレーザー照射によって溶接を行い、サンプルaの溶接シートを作製した。ここで、黒色インクを塗布した場所が溶着箇所となった。
(サンプルb)
インクを塗布したPETシートIをPETシートIIの上に置く前に、温風で加熱して30℃に予熱した以外はサンプルaと同様の方法でサンプルbの溶接シートを作製した。
(サンプルc)
PETシートIを予熱する温度を、30℃から50℃に変更した以外は、サンプルbと同様の方法でサンプルcの溶接シートを作製した。
(サンプルd)
PETシートIを予熱する温度を、30℃から60℃に変更した以外は、サンプルbと同様の方法でサンプルdの溶接シートを作製した。
(サンプルe)
PETシートIIを幅10mmの短冊形のスチール缶片に変更し、黒色インクをシール剤に変更した以外はサンプルаと同様の方法でサンプルeの溶接シートを作製した。ここで、シール剤を塗布した場所が溶着箇所となった。なお、スチール缶片は、スチール缶胴体に相当する。
(サンプルf)
シール剤を塗布したPETシートIをスチール缶片の上に置いた後に、上方からPETシートIに温風を当てて、PETシートIを加熱して60℃に予熱した以外はサンプルeと同様の方法でサンプルfの溶接シートを作製した。
作製した溶接シートについて、島津製作所製オートグラフAG−10kNDで引張試験を行った。溶接シートの一方であるPETシートIと他方であるPETシートII又はスチール缶片を、シートの主面上で、黒色インク又はシール剤を塗布した直線ラインに対して垂直方向に互いに反対方向に引っ張り、剪断強度を測定し、予熱が有意に機能するか検証した。
3,13,23,33,83 蓋
4,14,24,34,84 溶着予定箇所
9,19,29,39,89 口部
27 つまみ
61 充填機
62 第一搬送機
62a 容器胴体81が搬送されるライン
63 蓋供給機
63a 蓋搬送手段
63b 蓋供給手段
64 蓋装着機
65 第二搬送機
66,67 蓋溶接機
68 不良容器排除機
69 容器搬出機
72 蓋固定手段
73 レーザー照射手段
73a レーザー光
73b レーザー発振部品
73c 光接続部品
74 自転テーブル
74a 自転方向
75 ターンテーブル
76 レーザー照射領域
77 予熱領域
78 回転運動
84 溶着予定箇所
85 未密封状態の容器
86,100,200,300,400 密封容器
90 内容物
600,700 容器密封システム
α1,α2 蓋予熱機構
S1 充填工程
S2 蓋供給工程
S3 蓋装着工程
S4 配置工程
S5 溶着工程
S6 容器搬出工程
S7 不良品検査工程
S8 予熱工程
S10 蓋が載せられていない容器胴体の搬送工程
S11 蓋が載せられた容器胴体の搬送工程
Claims (4)
- レーザー溶接法によって、内容物を充填した容器胴体と該容器胴体の口部に装着された蓋とを溶着して気密状態とした密封容器の製造方法において、
前記容器胴体の口部に前記蓋を載せる蓋装着工程と、
該蓋装着工程の後に、前記容器胴体の口部に前記蓋を載せた状態で、前記蓋を加熱して該蓋を予熱された状態とする予熱工程と、
前記容器胴体の口部に予熱された前記蓋を載せた状態で、前記容器胴体をレーザー照射領域に入れる配置工程と、
蓋溶接機によって、前記蓋と前記容器胴体との溶着予定箇所に対してレーザー光を照射して、前記蓋と前記容器胴体とを溶着し、容器の密封を行なう溶着工程を有し、
前記予熱工程において、未密封状態の容器の移動途中に、隣り合う複数個の前記未密封状態の容器の各蓋をそれぞれ前記蓋溶接機に設けた発熱体であるか或いは被加熱体である押当部品で押さえることを特徴とする密封容器の製造方法。 - 前記密封容器は、前記蓋又は前記容器胴体のいずれか一方又は両方がポリエチレンテレフタレートからなる容器であるか、或いは、少なくとも前記蓋と前記容器胴体との密着箇所に溶着材としてポリエチレンテレフタレートからなるシートが挟まれている容器であり、
前記溶着工程の前に、前記蓋を50〜65℃に予熱された状態とし、
前記溶着工程において、ポリエチレンテレフタレートからなる前記蓋又は前記容器胴体のいずれか一方又は両方を前記溶着予定箇所において溶融固化することにより容器の密封を行なうか、或いは、ポリエチレンテレフタレートからなる前記シートを前記溶着予定箇所において溶融固化することにより容器の密封を行なうことを特徴とする請求項1に記載の密封容器の製造方法。 - 蓋を容器胴体の口部に載せて未密封状態の容器とする蓋装着機と、
該蓋装着機に前記蓋を単列で順次供給する蓋供給機と、
前記蓋装着機まで前記容器胴体を順次搬送する第一搬送機と、
前記未密封状態の容器の蓋と容器胴体との溶着予定箇所に対してレーザー光を照射して前記未密封状態の容器を密封する蓋溶接機と、
前記未密封状態の容器を前記蓋装着機から前記蓋溶接機まで単列で順次搬送する第二搬送機と、を有する容器密封システムにおいて、
前記蓋溶接機に隣り合う前記未密封状態の容器の蓋を複数個同時に加熱する蓋予熱機構を設け、該蓋予熱機構は、前記第二搬送機で搬送される前記未密封状態の容器の隣り合う複数個の各蓋をそれぞれ押さえる蓋固定手段を有し、該蓋固定手段のうち少なくとも前記蓋を押さえる押当部品が、発熱体であるか或いは被加熱体であることを特徴とする容器密封システム。 - 蓋を容器胴体の口部に載せた未密封状態の容器の前記蓋と前記容器胴体との溶着予定箇所に対してレーザー光を照射するレーザー照射手段と、
該レーザー照射手段まで前記未密封状態の容器を単列で順次移動させる移動手段と、
該移動手段による前記未密封状態の容器の移動途中に、隣り合う複数個の前記未密封状態の容器の各蓋をそれぞれ押さえる蓋固定手段とを有し、
該蓋固定手段のうち少なくとも前記蓋を押さえる押当部品が、発熱体であるか或いは被加熱体であることを特徴とする蓋溶接機。
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US20160288939A1 (en) * | 2013-12-06 | 2016-10-06 | Toyo Seikan Co., Ltd. | Container sealing apparatus and sealing system |
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JP5783238B2 (ja) * | 2013-12-20 | 2015-09-24 | 東洋製罐株式会社 | 容器の密封装置 |
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DK3153414T3 (en) | 2015-10-05 | 2018-06-25 | Tetra Laval Holdings & Finance | APPLICATION UNIT TO APPLY A COVER TO A CONTAINER |
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JPS5935890A (ja) * | 1982-08-20 | 1984-02-27 | Mitsubishi Electric Corp | レ−ザ−加工装置 |
JPH01254506A (ja) * | 1988-03-28 | 1989-10-11 | Showa Alum Corp | 容器への蓋のヒートシール装置 |
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US20160288939A1 (en) * | 2013-12-06 | 2016-10-06 | Toyo Seikan Co., Ltd. | Container sealing apparatus and sealing system |
US10683117B2 (en) * | 2013-12-06 | 2020-06-16 | Toyo Seikan Co., Ltd. | Container sealing apparatus and sealing system |
CN105129690A (zh) * | 2015-08-27 | 2015-12-09 | 合肥中辰轻工机械有限公司 | 一种灌装机用智能控温压盖装置 |
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