JPH09141763A - 熱融着方法 - Google Patents

熱融着方法

Info

Publication number
JPH09141763A
JPH09141763A JP7326202A JP32620295A JPH09141763A JP H09141763 A JPH09141763 A JP H09141763A JP 7326202 A JP7326202 A JP 7326202A JP 32620295 A JP32620295 A JP 32620295A JP H09141763 A JPH09141763 A JP H09141763A
Authority
JP
Japan
Prior art keywords
polyester resin
composite
face
polyester
blank
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.)
Withdrawn
Application number
JP7326202A
Other languages
English (en)
Inventor
Kazuhiro Hidaka
和弘 日高
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP7326202A priority Critical patent/JPH09141763A/ja
Publication of JPH09141763A publication Critical patent/JPH09141763A/ja
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/02—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
    • B65D5/06—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end-closing or contents-supporting elements formed by folding inwardly a wall extending from, and continuously around, an end of the tubular body
    • B65D5/067—Gable-top containers
    • 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both 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
    • 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
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/028—Non-mechanical surface pre-treatments, i.e. by flame treatment, electric discharge treatment, plasma treatment, wave energy or particle 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
    • 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
    • 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
    • B29C66/01—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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • 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
    • B29C66/345—Progressively making the joint, e.g. starting from the middle
    • B29C66/3452—Making complete joints by combining partial 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
    • B29C66/40—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
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • 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
    • 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
    • B29C66/40—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
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B29C66/43122—Closing the top of gable top containers
    • 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
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4326—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms for making hollow articles or hollow-preforms, e.g. half-shells
    • 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
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B29L2031/7162—Boxes, cartons, cases
    • B29L2031/7166—Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Composite Materials (AREA)
  • Cartons (AREA)
  • Making Paper Articles (AREA)

Abstract

(57)【要約】 【課題】ポリオレフィン系樹脂部分とポリエステル系樹
脂部分とからなる複合面とポリエステル系樹脂面を同時
に安定して熱接着する熱融着方法を提供する。 【解決手段】ポリオレフィン系樹脂ＰＥ部分とポリエス
テル系樹脂ＰＥＴ部分からなる複合面Ａと該複合面が対
向するポリエステル系樹脂面Ｂとを熱融着する方法にお
いて、前記複合面の前記ポリオレフィン系樹脂ＰＥ部分
と該ポリオレフィン系樹脂ＰＥ部分が対向する前記ポリ
エステル系樹脂ＰＥＴ面をフレーム処理あるいはコロナ
処理し、つづいて前記複合面Ａと該複合面Ａが対向する
前記ポリエステル系樹脂面Ｂの両面の全面をホットエア
ー処理した後に、該両面を互いに圧着して熱融着させ
る。

Description

【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は，封筒貼り方式によ
る積層材を用いた筒状体の筒貼り方法に関する。
【０００２】
【従来の技術】従来の板紙を基材とする積層材を使用
し、筒状体を経て最終形状に成形される包装容器には、
板紙の両面にポリオレフィン系樹脂をコートした積層材
が多用されてきたが、この種の容器では、成形時にポリ
オレフィン系樹脂が熱分解して容器内に残り、またポリ
オレフィン系樹脂自体から発生する臭いが包装充填され
る内容物、例えば果汁飲料、清酒、ミネラルウオーター
等に移行し、さらにポリオレフィン系樹脂が内容物の芳
香成分、揮発成分等を選択的に吸着、吸収あるいは透過
させるので、内容物が本来保有すべき味、匂い、フレー
バー、風味が損なわれていた。そこで、異臭の移行が少
なく、芳香、揮発成分に対する選択的な非吸着性、非吸
収性、不透過性に優れたポリエステル系樹脂、エチレン
・ビニルアルコール共重合体等を少なくとも容器の最内
層に使用した液体カートンが開発されてきた。一方アル
コール溶液等のように積層材の端面から浸透し易い内容
物に対しては、ブランクの筒貼りを封筒貼りで行う場合
に、封筒貼りで容器の内側に入る方のブランク端部の外
面を所定の巾と厚みに削り取り、削り取られた部分が半
巾になるように外側に折り畳み、折り畳まれたブランク
端部の外面ともう一方のブランク端部の内面とを所定の
巾で熱接着して積層材の端面を遮蔽する、いわゆるスカ
イブ・ヘミング法が行われている。上記のポリエステル
系樹脂等は少なくとも最内面に使用し、最外面にはポリ
オレフィン系樹脂を使用した仕様が経済面からも好まし
く一般的である。しかし、この仕様においては、前記の
スカイブ・ヘミング法の折り畳みで生じた互いに隣接す
るポリオレフィン系樹脂部分とポリエステル系樹脂部分
からなる帯状の「複合面」に対して積層材内面のポリエ
ステル系樹脂面を充分に熱接着させねばならない。従来
のポリオレフィン系樹脂部分同志の熱接着は何ら問題が
なかったが、このようなポリオレフィン系樹脂より遙に
融点の高いポリエステル系樹脂同志、ポリオレフィン系
樹脂とポリエステル系樹脂間の熱接着を同時に完全に行
うことは困難な点が多く、これまで種々の提案がなされ
てきている。特開平１−２１８８２３号公報では、対向
する前記両面をフレーム処理して溶融させた後に圧着さ
せる方法、特開平１−２４１４３４号公報では、アルミ
層の有る積層材の前記複合面のポリオレフィン系樹脂部
分とそれが対向するポリエステル系樹脂面をフレーム処
理し、圧着して熱融着させた後に、複合面のポリエステ
ル系樹脂部分とそれが対向するポリエステル系樹脂面と
を高周波シールする方法、さらに、特開平５−２６９８
９３号公報では、前記複合面のポリオレフィン系樹脂部
分とそれが対向するポリエステル系樹脂面分をフレーム
処理して溶融させ、次いで前記複合面のポリエステル系
樹脂部分とそれが対向するポリエステル系樹脂面をホッ
トエアーで溶融させ、圧着する方法が提案されている。
さらにまた特開平５−２５４０４２号公報では、前記複
合面のポリオレフィン系樹脂部分のみフレーム処理で前
処理しておき、次いで全ての面をホットエアーで溶融さ
せてから圧着する方法が提案されている。
【０００３】
【発明が解決しようとする課題】前述の特開平５−２５
４０４２号公報で提案されている方法では、前記複合面
のポリオレフィン系樹脂部分とそれが対向するポリエス
テル系樹脂面の間で、満足すべき初期接着強度は得られ
るが、成形された容器に冷却水などの水分が侵入し、暫
く経過すると、ポリオレフィン系樹脂とポリエステル系
樹脂間に界面剥離が生じ、異物がたまり易くなってカビ
等の発生原因となり、そして外観を悪くさせるという問
題がある。本発明は、前述の問題点に鑑みてなされたも
ので、筒貼り部の接着性に経時変化の起きない安定した
筒貼り部を得る熱融着方法を提供することを目的とす
る。
【０００４】
【課題を解決するための手段】前記課題を解決するため
に、ポリオレフィン系樹脂部分とポリエステル系樹脂部
分からなる複合面と該複合面が対向するポリエステル系
樹脂面とを熱融着する方法において、前記複合面の前記
ポリオレフィン系樹脂部分と該ポリオレフィン系樹脂部
分が対向する前記ポリエステル系樹脂面をフレーム処理
あるいはコロナ処理し、つづいて前記複合面と該複合面
が対向する前記ポリエステル系樹脂面の両面の全面をホ
ットエアー処理し、２段階の処理の後に、該両面を互い
に圧着して熱融着させる。
【０００５】
【発明の実施の形態】本発明を図面を用いて、更に詳し
く説明する。本発明による熱融着方法は種々の形態の容
器に適用されるがその一つであるゲーベルトップカート
ンを例にあげて説明する。図１は本発明による熱融着方
法の適用例の一つであるゲーベルトップカートンのブラ
ンク表面の展開図である。図２はゲーベルトップカート
ンの筒貼り部Ｔの構造説明図である。図１で示すよう
に、ブランクは４本の折線で区画された縦長のパネル１
〜４と第１パネルに折線ａを介して隣接した糊代片５か
らなり、糊代片５の後述する複合表面Ａが第４パネルの
裏面Ｂに熱接着によって筒貼りが行われ筒状体が成形さ
れる。この筒状体はさらに成形されて図２（ａ）に示す
最終形態となるが、筒貼り部Ｔの位置、構造は図２
（ａ）において示されている。すなわち筒貼り部Ｔは封
筒貼り方式で形成されており、その断面は図２（ｂ）で
示されている。また図２（ｂ）のＣ部の断面拡大図は同
じ向きではないが図３（ｅ）によって示されている。
【０００６】ゲーベルトップカートンには紙を主基材と
しその両面をプラスチックでコートした積層材が一般的
に使用されるが、浸透性のある液体に対しては端面処理
（スカイブ・ヘミング）が打ち抜かれた状態のブランク
の一方の端部（カートン成形後内側に入る内側端部）に
対して行われる。図３はスカイブ・ヘミングの説明図で
ある。図３（ａ）は端面処理前の糊代片５を構成する内
側端部の断面図で、液が侵入する端面はＥで示されてい
る。図３（ｂ）で示すように内側端部は外側から所定の
巾Ｓだけ、ほぼ半分の厚みになるようスカイバーの回転
刃によって機械的に削り取られ、つづいて図３（ｃ）に
示すように、端面Ｅが内側になるよう半幅Ｈに折り畳ま
れて接着材で固着されて端面処理は終了する。またこの
図３（ｃ）は図１（ａ）のｘ−ｘ断面を示している。こ
の図３（ｃ）から判るように、糊代片５の表面Ａはブラ
ンクの表面と裏面の異なる樹脂層が中央で突き合わされ
た形で共存して複合面Ａを形成している。ここで処理さ
れたブランク端面を６で示し、もう一方のブランク端面
を７で示す。以上の端面６、７を左右に有するカートン
ブランク１０を折線ｂ，ｄで三つ折りすると、図３
（ｄ）に示すように糊代片５の複合表面Ａに対して、図
１で示すパネル４の裏面Ｂが対向し、この対向する両面
を本発明による熱融着方法で熱接着して５を形成し、折
り畳まれたフラットな筒状体が得られる。これを角柱状
に起こした状態を図３（ｅ）に示す。
【０００７】図４は本発明による熱融着方法の原理説明
図である。本発明による熱融着方法は、表面層がポリオ
レフィン系樹脂（以下ＰＥで示す）で、内容液に接する
内面層がポリエステル系樹脂（以下ＰＥＴで示す）から
なる積層材ブランクの筒貼りに対して適用される。従っ
て図４（ａ）で示すように、糊代片５の表面はＰＥ面と
ＰＥＴ面が共存する複合面Ａであり、これに対向するパ
ネル４の裏面ＢはＰＥＴ面である。中間層は種々のバリ
エーションがあるが、図４では簡略化するため、すべて
紙層Ｐとしている。本発明による熱融着方法は、先ず複
合面ＡのＰＥ層とそれが対向するＰＥＴ層に対してフレ
ーム処理あるいはコロナ処理で前処理を行い（処理面を
×印で示す）、ＰＥ面については表面張力が４６ｄｙｎ
以上に、またＰＥＴ面につては、４８ｄｙｎ以上にす
る。つづいて対向する両面Ａ，Ｂの全面をホットエアー
処理を行い（処理面を○印で示す）、全面を熱溶融させ
てから両面Ａ，Ｂを圧着し図４（ｂ）の状態に筒貼りす
る。
【０００８】図５は本発明による熱融着方法の処理操作
説明図である。図５（ａ）に示すように、筒貼り機の左
右に設けられたフレーム処理装置ＦＬとホットエアー装
置ＨＡの各ノズルあるいは吹き出し口に接近してブラン
ク１０を矢印の方向に走行させながら、上方から表面Ａ
のＰＥ部分をフレーム処理装置ＦＬによって発生する燃
焼ガスの酸化炎によって表面処理し、表面張力を高め、
つづいて表面Ａ全体をホットエアー発生装置から吹き出
す５００乃至７００℃のホットエアーで溶融させ、一方
Ｂ面に対しては下方から、表面Ａに対向するＰＥＴ面に
対して上記と同様にフレーム処理を行い、つづいて裏面
Ｂ全体を上記と同様にホットエアーで溶融させ、この２
段階の処理の後に、ブランク１０を折線ｂ，ｄで三つ折
りして対向する両面Ａ，Ｂが圧着ローラーで圧着され
る。図５（ｂ）は、ブランク１０の走行方向からみた処
理操作説明図であって、両面Ａ，Ｂに対してそれぞれ上
下別方向からの処理操作が行われることを示している。
【０００９】
【実施例】以下、本発明による熱融着方法による筒貼り
法の具体的な構成を説明する。実施例では次の層構成か
らなる積層材のブランク１０を使用した。厚さ３０μｍ
のポリオレフィン系樹脂（ミラソン１６Ｐ：三井石油化
学工業（株）製）層／紙４００ｇ／ｍ2 ／エチレンメタ
クリル酸共重合体３０μｍ（ニュークレルＮ１１０８
Ｃ：三井・デュポンポリケミカル（株）製）／アリミ箔
９μｍ／２軸延伸ポリエステル１２μｍからなる基材に
対し、前記基材の２軸延伸ポリエステル面に、厚さ３０
μｍのエチレン−α−オレフィン共重合体樹脂（ウルト
ゼックス２０２０Ｌ：三井石油化学工業（株）製）層／
厚さ１０μｍの接着性ポリオレフィン系樹脂（アドマー
ＳＥ８００：三井石油化学工業（株）製）層／厚さ３０
μｍの線状飽和ポリエステル樹脂（ＰＥＴ−Ｇ６７６
３：イーストマンコダック社製）層からなる３層共押出
しフィルムを、該フィルムのポリエステル樹脂層が、最
終積層材の裏面となるように積層した。
【００１０】以上の積層材の表面のＰＥ面と裏面のＰＥ
Ｔ面に次の処理を施した。 フレーム処理条件：ＬＰＧガス流量０．１Ｎｍ3 ／ｈ，
エアー流量２．２Ｎｍ3 ／ｈ（２０℃）にて、バーナー
処理長さを５０ｍｍとし、バーナー外炎がカートン表面
に接するように処理した。 ホットエアー条件：ガス燃焼式ホットエアー装置を使用
し、吹き出し温度６００℃、処理長さ１８００ｍｍとし
た。 処理速度：１５０ｍ／ｍｉｎ．
【００１１】また、比較例を次の方法で作成した。 比較例１ 上記と同じブランクの複合面ＡのＰＥ部分のみをフレー
ム処理した。 比較例２ 上記と同じブランクを使用するが、前処理は行わず、ホ
ットエアー処理のみを全面に対して行った。
【００１２】以上用意された実施例、比較例サンプルの
ＰＥ面，ＰＥＴ面間のヒートシール強度と耐水性につい
て次の条件でテストした結果は次のようであった。 テスト条件 ヒートシール条件：シールバー上下温度 ２５０℃、圧力３ｋｇｆ／ｃｍ2 加圧時間５秒 剥離条件：１８０°剥離、引っ張り速度３００ｍｍ／ｍｉｎ． 浸漬条件：水道水に２４時間、乾燥後に測定 サンプル数：各３個、数値は３個の平均 サンプル 初期シール強度 浸漬後のシール強度 ｋｇｆ／１５ｍｍ ｋｇｆ／１５ｍｍ 実施例 ３．５ ３．５ 比較例１ ３．２ 剥離 比較例２ 接着せず 剥離 以上の結果から判るように、ＰＥ面とＰＥＴ面の熱接着
において、両面をフレーム処理してホットエアー処理す
る２段階の処理の後に圧着させることによってこの両面
間の接着強度は水溶液に浸漬後も著しく改善されること
を確認した。なお、ＰＥＴ面同志の熱接着は問題が少な
いのでテストから除外した。
【００１３】
【発明の効果】本発明による熱融着方法によれば、ＰＥ
面とＰＥＴ面からなる複合面を対向するＰＥＴ面に対し
て満足すべき初期接着強度と内溶液に浸漬後の接着強度
をもって熱接着が可能となり、表面がＰＥ層で内面がＰ
ＥＴ層の表裏異材質のブランクを安定して筒貼りするこ
とができ、流通過程において、内溶液の侵出を防ぐ効果
がある。
【図面の簡単な説明】
【図１】本発明による熱融着方法の適用例の一つである
ゲーベルトップカートンのブランク展開図
【図２】ゲーベルトップカートンの筒貼り部の構造説明
図
【図３】スカイブ・ヘミングの説明図
【図４】本発明による熱融着方法の原理説明図
【図５】本発明による熱融着方法の処理操作説明図
【符号の説明】
１〜４ ブランクパネル ５ 糊代片 ６ ブランクの処理端面 ７ ブランクの外側端面 １０ ブランク ２０ 液体紙容器 ａ〜ｂ 折線 Ａ 複合面（処理ブランクの糊代表面） Ｂ 複合面の対向面（パネル４の裏面） Ｅ ブランクの端面処理前の内側端面 Ｈ スカイブ・ヘミングの折り畳み巾 Ｐ 紙層 Ｔ 筒貼り部 ＰＥ ポリオレフィン系樹脂 ＰＥＴ ポリエステル系樹脂 ＦＬ フレーム処理装置 ＨＡ ホットエアー処理装置

Claims (1)

    【特許請求の範囲】
  1. 【請求項１】 ポリオレフィン系樹脂部分とポリエステ
    ル系樹脂部分からなる複合面と該複合面が対向するポリ
    エステル系樹脂面とを熱融着する方法において、前記複
    合面の前記ポリオレフィン系樹脂部分と該ポリオレフィ
    ン系樹脂部分が対向する前記ポリエステル系樹脂面をフ
    レーム処理あるいはコロナ処理し、つづいて前記複合面
    と該複合面が対向する前記ポリエステル系樹脂面の両面
    の全面をホットエアー処理した後に、該両面を互いに圧
    着して熱融着させることを特徴とする熱融着方法。
JP7326202A 1995-11-22 1995-11-22 熱融着方法 Withdrawn JPH09141763A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7326202A JPH09141763A (ja) 1995-11-22 1995-11-22 熱融着方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7326202A JPH09141763A (ja) 1995-11-22 1995-11-22 熱融着方法

Publications (1)

Publication Number Publication Date
JPH09141763A true JPH09141763A (ja) 1997-06-03

Family

ID=18185153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7326202A Withdrawn JPH09141763A (ja) 1995-11-22 1995-11-22 熱融着方法

Country Status (1)

Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006334798A (ja) * 2005-05-31 2006-12-14 Toppan Printing Co Ltd カートンブランクシートのヒートシール領域加熱装置
JP2012024965A (ja) * 2010-07-21 2012-02-09 Nippon Dekishii:Kk 紙容器成形機
JP2013043684A (ja) * 2011-08-25 2013-03-04 Daiwa Can Co Ltd 紙容器
US11065824B2 (en) 2016-08-31 2021-07-20 Sig Technology Ag Device and method for producing packaging precursors by means of a heating device acting on the edge area of the packaging precursor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006334798A (ja) * 2005-05-31 2006-12-14 Toppan Printing Co Ltd カートンブランクシートのヒートシール領域加熱装置
JP2012024965A (ja) * 2010-07-21 2012-02-09 Nippon Dekishii:Kk 紙容器成形機
JP2013043684A (ja) * 2011-08-25 2013-03-04 Daiwa Can Co Ltd 紙容器
US11065824B2 (en) 2016-08-31 2021-07-20 Sig Technology Ag Device and method for producing packaging precursors by means of a heating device acting on the edge area of the packaging precursor
EP3507082B1 (de) * 2016-08-31 2021-08-04 SIG Technology AG Vorrichtung und verfahren zum herstellen von verpackungsvorläufern mittels einer am randbereich des verpackungsvorläufers einwirkenden erhitzungseinrichtung

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