JPH04211434A - 赤外光線による加熱方法 - Google Patents

赤外光線による加熱方法

Info

Publication number
JPH04211434A
JPH04211434A JP3003218A JP321891A JPH04211434A JP H04211434 A JPH04211434 A JP H04211434A JP 3003218 A JP3003218 A JP 3003218A JP 321891 A JP321891 A JP 321891A JP H04211434 A JPH04211434 A JP H04211434A
Authority
JP
Japan
Prior art keywords
infrared light
heating
heating method
thermoplastic
material web
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3003218A
Other languages
English (en)
Other versions
JP2889710B2 (ja
Inventor
Anders Anderson
アンデルス　アンデルソン
Tom Kjelgaard
トム　クイエルガールド
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Pak Holdings SA
Tetra Pak Finance and Trading SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tetra Pak Holdings SA, Tetra Pak Finance and Trading SA filed Critical Tetra Pak Holdings SA
Publication of JPH04211434A publication Critical patent/JPH04211434A/ja
Application granted granted Critical
Publication of JP2889710B2 publication Critical patent/JP2889710B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0044—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping edges or extremities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0266—Local curing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/10—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation for articles of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1412—Infrared [IR] radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1477—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 making use of an absorber or impact modifier
    • B29C65/1483—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 making use of an absorber or impact modifier coated on the article
    • 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
    • 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
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • 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
    • B29C66/7232—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 non-plastics layer
    • B29C66/72327—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 non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B29K2711/123—Coated

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  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Composite Materials (AREA)
  • Chemical & Material Sciences (AREA)
  • Laminated Bodies (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Making Paper Articles (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Heat Treatment Of Articles (AREA)
  • Package Closures (AREA)
  • Paper (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Wrappers (AREA)
  • Wire Processing (AREA)
  • Resistance Heating (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Cell Separators (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、放射線収束反射器を装
備したＩＲランプまたはそうしたランプの電池を用いて
熱可塑材表面の特定区域を加熱する赤外線による加熱方
法に係る。
【０００２】
【従来の技術】熱可塑材からなるパッケージ材料シート
の特定区域をＩＲ光線を用いて加熱し、例えばプラスチ
ック製の蓋の深絞り部分に加熱区域を形成する技術は従
来から周知である。
【０００３】パッケージ産業界では、パッケージ材料に
連続材料ウェブが用いられてきている。このパッケージ
材料は、一般には表側と裏側に熱可塑材をラミネートし
たペーパーまたはボール紙からできている。ラミネート
層には薄いアルミ箔を使用することもできる。
【０００４】ラミネート材の製造を終えた後、ラミネー
ト材は適当な幅に切断され、いわゆるジャンボリールに
巻き取って保管される。パッケージ装置によりパッケー
ジ材料は横向きにシールされ、この横向きのシールに沿
って切断され最終製品のパッケージとして形作られる。 大抵の場合、パッケージ材料をチューブに成形するのに
伴い内側のラミネート縁を保護する必要がある。この保
護のためには、柔軟性のある熱可塑性ストリップをラミ
ネート材の内側にシール接合するか、またはパッケージ
材料の製造時に幅の狭い熱可塑材の縁をラミネート材の
一方の側部形成線から外に突き出しておくこともできる
。
【０００５】熱可塑材の縁には接着用アルミ箔をラミネ
ートしておくこともできる。この熱可塑材の縁は充填機
械に送り込まれる以前に露出したラミネート縁を覆って
折り返され、熱可塑性のラミネート表面に対しシールさ
れる。この例では、パッケージ材料ウェブを加熱してか
ら縁を折り曲げ、ラミネート表面に対し縁のシールが行
なわれている。こうしたケースでは、連続材料ウェブの
特定の部分だけを加熱することが望まれている。また柔
軟なプラスチック製ストリップを使用する際には、連続
材料ウェブの特定部分を加熱することが望ましい。
【０００６】
【発明が解決しようとする課題】従来技術によれば、折
曲げ作業に先立ち連続材料ウェブの縁を温風により加熱
することが行われている。温風ノズルから連続材料ウェ
ブの縁に向けて温風ジェットが吹き付けられる。この例
では拡散加熱作用が働くが、この作用を物理的な手法で
特定箇所に集中させることは困難である。ラミネート縁
に加えて熱可塑材の縁も加熱され、この熱可塑材の縁が
軟化して後続の折曲げ作業の際の取扱いに支障をきたし
ている。こうした障害は、熱可塑材の縁をアルミ箔でラ
ミネートした場合に特に顕著に認められる。縁の加熱に
より、アルミ箔に裂目ができたりしわのよることがある
ためである。こうして形成された縁の折目には完全な気
密性がなく、無菌パッケージが汚染されることもある。 後続の折り曲げ操作は、傾斜角度を変えた一連のローラ
を用いるか、または縁を折り返すベルトを用いて行われ
てきている。
【０００７】本発明の目的は、パッケージ材料ウェブの
隣接部分に熱の影響を及ぼさないで、連続材料ウェブの
特定区域を加熱する方法を提供することにある。
【０００８】
【課題を解決するための手段】この目的および他の目的
は、熱可塑材表面を連続材料ウェブ上に配置し、この連
続材料ウェブがペーパーまたはボール紙の層に熱可塑材
をラミネートしたものから構成されていることを特徴と
する、冒頭で指摘した形式の本発明に係る方法により達
成することができる。
【０００９】本発明の特徴ならびにその形態は、添付図
面に沿った好ましい実施例についての以下の詳細な説明
を読めば十分に理解することができる。
【００１０】添付図面は、本発明を理解する上で不可欠
な部分のみを抜粋して示してしる。図面を参照する。図
１は、従来の反射器スクリーン２に装着したＩＲランプ
１または直列に連結される電池ＩＲランプを示している
。反射器２は、所定の距離をおいて放射線の収束する焦
点３を備えている。連続材料ウェブ４から特定の距離を
開けてＩＲランプ１と反射器２を配置することにより、
焦点３は材料ウェブ４の前方に距離Ａをおいて位置する
ようになる。こうして、焦点３から先の放射線はパッケ
ージ材料ウェブ４の表面に幅Ｂにわり散乱照射される。 距離Ａが大きくなれば幅Ｂも広がり、また幅Ｂを広げた
ければ距離Ａを大きく取ればよい。こうして、Ｂにより
特定される区域７はパッケージ材料の加熱される部分を
構成している。
【００１１】直列に連結されるＩＲランプ１の数はウェ
ブ４の前進速度に応じて選択され、ウェブ４の前進速度
が速ければ、所定の効果を得るためにそれだけ直列に連
結されるランプ１も数も増やされる。
【００１２】また図１は、アルミ箔をラミネートするこ
ともできる連続材料ウェブから外に突き出た熱可塑材の
縁５を示している。
【００１３】連続材料ウェブ４がＩＲランプ１または直
列に連結され電池管を構成するＩＲランプを通過する際
、連続材料ウェブ４の熱可塑材表面は、突出縁５のすぐ
内側の特定の区域７が可塑材の融点に連続材料ウェブ４
の縁に沿って延びるゾーンを形成している。
【００１４】このようにして加熱作業を物理的に制御し
、縁５には影響が及ばないようにされる。この縁５は（
加熱されていないため取り扱い易い）、例えばローラや
ベルトを使用しての後続の折曲げ工程で折り返され、均
一でしかも平滑なシール面を備えた連続材料ウェブ４に
対しシール接合される。アルミ箔が熱可塑材に付着した
り、裂け目が入ったりまたしわのよることはない。
【００１５】図２は、折曲げ工程に先立って加熱される
区域７に所定の色彩のカラーストリップ６を装着してあ
る連続材料ウェブ４の一部分を示している。このカラー
ストリップ６は、パッケージ材料に図柄模様を印刷する
初期工程において連続材料ウェブ４に適当に印刷してお
くこともできるカラーストリップ６は、暗色、艶消し色
、好ましくは黒色のマットから構成されている。ＩＲラ
ンプ１には、黒色にとって特に集熱のしやすい波長域で
作動するものが選択されている。
【００１６】
【発明の効果】ＩＲランプ１の熱に晒されたカラースト
リップ６はこの熱を吸収するが、実測によると、この方
法により加熱に必要な電力を５０％程度削減できること
が判明した。
【００１７】またカラーストリップ６は放射熱を集熱す
る役割も果たし、カラーストリップ６の外側に拡散され
る熱量が少なくてすむ。
【００１８】先の説明から明らかなように、本発明によ
れば、連続材料ウェブの特定の区域の加熱を行ない、連
続材料ウェブの他の部分および突き出ているすべての熱
可塑材の縁に熱の影響が及ばず、引き続いて行われる折
曲げ作業に支障をきたすことのない方法が得られる。
【００１９】本発明は、前述の記載および図面に示した
構造に限定されるわけではない。特許請求の範囲に記載
の発明の精神および技術範囲から逸脱することなく如何
様にも変更することができる。
【図面の簡単な説明】
【図１】ＩＲランプを連続材料ウェブに向けて設置する
方法を示す概略図。
【図２】連続材料ウェブの一部分を示す概略図。
【符号の説明】
１　　ＩＲランプ ２　　反射器 ３　　焦点 ４　　連続材料ウェブ ５　　突出縁 ６　　カラーストリップ ７　　加熱区域

Claims (6)

    【特許請求の範囲】
  1. 【請求項１】　　放射線収束反射器（２）を備えたＩＲ
    ランプ（１）または電池ランプを用いて熱可塑材表面の
    特定区域を加熱する赤外線による加熱方法にして、熱可
    塑材表面は連続材料ウェブ（４）上に配置してあり、こ
    の連続材料ウェブがペーパーまたはボール紙の層に熱可
    塑材をラミネートしたものから構成されていることを特
    徴とする赤外光線による加熱方法。
  2. 【請求項２】　　請求項１に記載された赤外光線による
    加熱方法において、熱可塑材の突出縁（５）が連続材料
    ウェブ（４）の一方の側部に沿って配置してあり、この
    突出縁は連続材料ウェブ（４）に折り返されるように用
    いられることを特徴とする赤外光線による加熱方法。
  3. 【請求項３】　　請求項２に記載された赤外光線による
    加熱方法において、特定の加熱区域が突出する熱可塑材
    の縁（５）よりも幾分内側に配置されていることを特徴
    とする赤外光線による加熱方法。
  4. 【請求項４】　　請求項３に記載された赤外光線による
    加熱方法において、特定の加熱区域は、連続材料ウェブ
    （４）の移動方向に沿った幅の狭いゾーンとして位置し
    ていることを特徴とする赤外光線による加熱方法。
  5. 【請求項５】　　請求項１に記載された赤外光線による
    加熱方法において、特定の加熱区域は、カラーストリッ
    プ（６）として事前に印刷されていることを特徴とする
    赤外光線による加熱方法。
  6. 【請求項６】　　請求項５に記載された赤外光線による
    加熱方法において、事前に印刷れたカラーストリップ（
    ６）は暗色カラーのマットから構成されていることを特
    徴とする赤外光線による加熱方法。
JP321891A 1990-01-16 1991-01-16 赤外光線による加熱方法 Expired - Fee Related JP2889710B2 (ja)

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SE9000154A SE465214B (sv) 1990-01-16 1990-01-16 Saett att uppvaerma del av loepande materialbana
SE9000154-6 1990-01-16

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CA (1) CA2034218C (ja)
CZ (1) CZ279662B6 (ja)
DE (1) DE69004945T2 (ja)
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ES (1) ES2047814T3 (ja)
HU (1) HU218369B (ja)
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ATE97855T1 (de) 1993-12-15
SE9000154D0 (sv) 1990-01-16
AU639290B2 (en) 1993-07-22
CA2034218C (en) 2000-11-21
DK0437847T3 (da) 1994-01-17
HU218369B (hu) 2000-08-28
EP0437847B1 (en) 1993-12-01
ES2047814T3 (es) 1994-03-01
HUT60656A (en) 1992-10-28
JP2889710B2 (ja) 1999-05-10
DE69004945D1 (de) 1994-01-13
YU48001B (sh) 1996-08-13
EP0437847A1 (en) 1991-07-24
US5113479A (en) 1992-05-12
KR910014281A (ko) 1991-08-31
YU5391A (sh) 1994-11-15
CS9100072A2 (en) 1991-08-13
DE69004945T2 (de) 1994-04-28
KR960013933B1 (ko) 1996-10-10
SE465214B (sv) 1991-08-12
CZ279662B6 (cs) 1995-05-17
HU910118D0 (en) 1991-08-28
CA2034218A1 (en) 1991-07-17
AU6936591A (en) 1991-07-18

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