JP3894964B2 - How to bond saw blade cutter - Google Patents

How to bond saw blade cutter Download PDF

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Publication number
JP3894964B2
JP3894964B2 JP33492194A JP33492194A JP3894964B2 JP 3894964 B2 JP3894964 B2 JP 3894964B2 JP 33492194 A JP33492194 A JP 33492194A JP 33492194 A JP33492194 A JP 33492194A JP 3894964 B2 JP3894964 B2 JP 3894964B2
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JP
Japan
Prior art keywords
saw blade
blade cutter
carton blank
adhesive
resin
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.)
Expired - Fee Related
Application number
JP33492194A
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Japanese (ja)
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JPH08174720A (en
Inventor
充也 小澤
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
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Dai Nippon Printing Co Ltd
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Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP33492194A priority Critical patent/JP3894964B2/en
Priority to KR1019960704375A priority patent/KR100235827B1/en
Priority to PCT/JP1995/002619 priority patent/WO1996019343A1/en
Priority to GB9812808A priority patent/GB2323074B/en
Priority to GB9617012A priority patent/GB2301310B/en
Priority to GB9902930A priority patent/GB2331288B/en
Publication of JPH08174720A publication Critical patent/JPH08174720A/en
Application granted granted Critical
Publication of JP3894964B2 publication Critical patent/JP3894964B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially 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
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/843—Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
    • 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
    • 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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7375—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 state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73755—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 state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being fully cured, i.e. fully cross-linked, fully vulcanized
    • 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
    • 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
    • B29C66/7394—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 thermoset
    • 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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/811—Applying strips, strings, laces or ornamental edgings to formed boxes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Making Paper Articles (AREA)
  • Cartons (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Nonmetal Cutting Devices (AREA)

Description

【０００１】
【産業上の利用分野】
本発明は、アルミホイル、ラッピングフイルム等を収容する鋸刃カッター付カートンの製造に当たって、カートンブランクへ鋸刃カッターを接着する方法に関する。
【０００２】
【従来の技術】
従来、巻取状態のアルミホイル、プラスチックのラッピングフイルム等を収容した直方体状のカートンに、側縁に鋸刃を形成した金属製の鋸刃カッターを取り付けておき、アルミホイルやラッピングフイルム等を引き出し、その鋸刃カッターを用いて切り離すように構成したものが広く使用されている。しかし、金属製の鋸刃カッターは焼却できず、廃棄に問題があった。そこで、金属製の鋸刃カッターに代えて紙等の非金属の鋸刃カッター、例えばバルカナイズドファイバー製の鋸刃カッターを用いることが提案されており、例えば、特開平６−４８４２８号公報、特開平６−１４４４２５号公報に開示されている。
【０００３】
バルカナイズドファイバー製等の非金属の鋸刃カッターをカートンブランクに接着するには、金属製の鋸刃カッターのようにかしめを利用することができないので、一般に鋸刃カッター全体をホットメルト系或いはエマルジョンタイプの接着剤（糊）で接着していた。また、上記の特開平６−４８４２８号公報では鋸刃カッター全体を超音波溶着で接着しており、特開平６−１４４４２５号公報ではまず、鋸刃カッターを超音波溶着或いは接着剤でスポット的に仮接着し、その後全体を超音波接着又はヒートシールしていた。
【０００４】
【発明が解決しようとする課題】
しかし、接着剤を用いて鋸刃カッター全体をカートンブランクに接着した場合には、使用中に鋸刃カッターの両端が浮き上がって見栄えが悪くなったり、剥がれて使用できなくなることがあるという問題があった。この問題の原因を検討した結果、次の事項を見出した。すなわち、接着剤で鋸刃カッターをカートンブランクに接着する場合、接着剤が圧着により広がり、鋸刃カッターの外に漏れるのを防止するため、接着剤の塗布幅及び塗布長さを鋸刃カッターの幅及び長さよりも小さくしており、このため接着剤のつかない部分が生じており、特に鋸刃カッターの両端に接着剤の無い部分が生じている。このような部分は剥がれやすく、特に鋸刃カッターが吸水性を有していた場合、吸水によって伸びようとして剥がれることがある。しかも、鋸刃カッターでアルミホイル或いはラッピングフイルム等を切断する際に、鋸刃カッターの端部に大きい力が加わり、この点からも剥がれやすい。このため、使用中に鋸刃カッターの両端に浮き上がりや剥がれが多く発生していた。
【０００５】
また、特開平６−４８４２８号公報及び特開平６−１４４４２５号公報に示されるように、鋸刃カッター全面を超音波溶着する場合には、シールに使うホーンの形状が横長となり、耐久性に欠けるとか、大きい面積をシールするために大出力を要する等の問題があった。なお、特開平６−１４４４２５号公報に示されるように円盤型ホーンを用いることも可能であるが、この場合には装置が複雑となるという問題があった。また、鋸刃カッター全面をヒートシールする場合にも、大出力を必要とすると共にヒートシール面が細長くなるので温度の均一化や均等な押圧が困難で、接着力にむらが生じやすく、しかも、ヒートシールに時間がかかり、生産性が悪いという問題があった。
【０００６】
本発明は、上述の問題点に鑑みて為されたもので、大出力の且つ複雑な構造の超音波シール装置やヒートシール装置を用いることなく、非金属の鋸刃カッターをカートンブランクに良好に接着することの可能な鋸刃カッターの接着方法を提供することを目的とする。
【０００７】
【０００８】
【課題を解決するための手段】
上記目的を達成すべくなされた本発明は、無サイズで若しくは少量のサイズ剤を添加して抄造した原紙に溶着性を有する樹脂を含浸させてなる樹脂含浸紙で構成された、溶着可能な鋸刃カッターを、そのほぼ全長に渡って接着剤によってカートンブランクに接着し、次いで前記鋸刃カッターの少なくとも両端を前記カートンブランクに対して超音波シール又はヒートシールすることを特徴とする鋸刃カッターの接着方法を要旨とする。
【０００９】
【００１０】
【００１１】
【作用】
上記した本発明では、鋸刃カッターを、そのほぼ全長に渡って接着剤によってカートンブランクに接着した後、その少なくとも両端を超音波シール又はヒートシールすることにより、鋸刃カッターの剥がれやすい両端の接着が確実となって、使用中に剥がれるということがなく、しかも、超音波シール又はヒートシールは、少なくとも鋸刃カッター両端の小面積を接着すればよいので、両端の接着に用いる超音波シール装置又はヒートシール装置は簡単な構造でよく、確実な接着が可能である。なお、必要に応じ、鋸刃カッターの両端のみならず、その他の任意の適当な小面積を超音波シール又はヒートシールして接着してもよい。この際、超音波シール又はヒートシールする面積としては、幅及び長さをそれぞれ５〜２０ｍｍ程度とすることが、小エネルギーで確実な接着が可能であることから好ましい。
【００１２】
ここで用いる鋸刃カッターは樹脂含浸紙で構成されているので、含浸樹脂が溶着性を発揮し、このため、ポリエチレンコート等の二次加工を行うことなく、超音波シールやヒートシールを行うことができる。また、樹脂含浸紙は吸湿性がほとんど無いため、使用中において吸湿して劣化したり剥がれるということがない。
【００１３】
【実施例】
以下、本発明の好適な実施例を説明する。
図６は、後述する本発明の一実施例による接着方法によって接着するカートンブランク１と非金属の鋸刃カッター２を示すものである。鋸刃カッター２は、長尺の原反の先端を鋸刃状に切断して切り離すことにより作られており、その両側縁に鋸刃２ａ、２ｂを有している。この鋸刃カッター２をカートンブランク１の表面の斜線で示す領域３に貼り付け、その後、カートンブランク１を箱状に組み立てることにより、図７に示すように、鋸刃カッター２を一方の鋸刃２ａが角部から突出するように取り付けたカートン１Ａを形成でき、このカートン１Ａにアルミホイル、ラッピングフイルム等を収容しておき、使用時にそれを引き出し、鋸刃カッター２の鋸刃２ａで切り離すことができる。なお、鋸刃カッター２のカートンブランク１に対する貼り付け位置は図６に示す位置に限らず、例えば、図８に示すようにカートンブランク１の掩蓋片１ａの裏面側の領域３Ａ（開封用のミシン目４に沿った領域）としてもよい。
【００１４】
鋸刃カッター２を形成するための原反としては、鋸刃として使用するための適度な硬さと、超音波シールやヒートシール可能な溶着性を有する非金属材料が使用される。好適な原反材料としては、長繊維の木材パルプを主原料とし、無サイズで若しくは少量のサイズ剤を添加して抄造した原紙に溶着性を有する樹脂を含浸させてなる樹脂含浸紙を挙げることができる。ここで、樹脂含浸紙の樹脂含浸量としては、含浸用原紙１００重量部に対して樹脂５０〜８０重量部が好適である。すなわち、樹脂分が５０重量部よりも小さいと、強度が低くて鋸刃カッターとしての効果が悪くなり、一方、８０重量部を越えると樹脂含浸が困難となるから、上記の範囲が好適である。なお、原紙の抄造の際に添加するサイズ剤の量としては、上記範囲の樹脂分を含浸させることができる原紙を抄造できるように定めるものであり、サイズ剤の添加量を調整してサイズ度（液の浸透に対する抵抗度合い）を調整することにより、樹脂含浸量をコントロールすることができる。
【００１５】
樹脂含浸紙の厚みは、鋸刃カッターとして使用する際の切れ味、強度等を確保するため、０．２〜０．４ｍｍ程度が好適である。また、樹脂含浸成分としては、硬質水溶性アクリル樹脂で、例えば、アクリル酸メチル、アクリル酸エチル、アクリル酸ブチル、メタクリル酸メチル、メタクリル酸エチル、メタクリル酸ブチル等を挙げることができる。なお、樹脂含浸紙は、表面に樹脂皮膜を形成する等の二次加工を行うことなく鋸刃カッターの原反として使用される。
【００１６】
【００１７】
次に、上記の原反を用いた本発明の一実施例による接着方法を説明する。まず、図１（ａ）に示すように、所定形状に打ち抜いたカートンブランク１の所定位置に接着剤ノズル５から接着剤６を吐出して塗布する。この接着剤塗布は、接着剤ノズル５に対してカートンブランク１を矢印で示す方向に移動させることにより実施できる。なお、この代わりにカートンブランク１を停止させておき、接着剤ノズル５を矢印とは反対方向に移動させてもよい。ここで使用する接着剤は、ホットメルト系接着剤、エマルジョン系接着剤等任意であり、例えば、ホットメルト系接着剤としては、ＥＶＡ（エチレン酢酸ビニル共重合樹脂）、ＡＰＰ（アクタチックーポリプロピレン）、ＰＥ（ポリエチレン）、ＳＩＳ（スチレン・イソプレン共重合樹脂）、ＳＢＳ（スチレン・ブタジエン共重合樹脂）、ポリアミド樹脂等を挙げることができ、また、エマルジョン系接着剤としては、酢酸ビニル・アクリル共重合樹脂、変性アクリル酸エステル共重合樹脂、アクリル共重合樹脂、酢酸ビニル樹脂等を挙げることができる。
【００１８】
接着剤６の塗布領域は、その上に鋸刃カッター２を押し付けて接着した状態において、図５に斜線で示すように接着剤６が鋸刃カッター２のほぼ全長に渡って存在するように定められる。ただし、鋸刃カッター２を押し付けて加圧した時に、接着剤６が鋸刃カッター２の外側に漏れ出すことがないようにするため、接着剤６は鋸刃カッター２の全面積よりもかなり小さい面積に塗布されており、このため、鋸刃カッター２を貼り付けた状態において、その鋸刃カッター２の両端には、接着剤６の存在しない領域が少し、例えば２〜５ｍｍ程度生じる。
【００１９】
次に、図１（ｂ）に示すように、原反７の先端を所定形状に打ち抜いて鋸刃カッターを形成し、それをカートンブランク１に塗布した接着剤６の上に押し付けて接着する。鋸刃カッターの打ち抜き及び接着は図２に示す装置によって行われる。すなわち、図２において、８はカートンブランク１を搬送する搬送ローラ、９はカートンブランク１の鋸刃カッター貼り付け部分を支持する支持台、１０は先端に鋸刃１０ａを備えた固定ダイ、１１は先端に前記鋸刃１０ａに噛み合う鋸刃１１ａを備えた移動ダイ、１２は移動ダイ１１を上下動させるシリンダ機構、１３は原反７を鋸刃カッター２の幅に相当する長さづつ送り出す原反搬送ローラである。この装置による動作は次のように行われる。まず、図２（ａ）に示すように、原反７がその先端を、固定ダイ１０の鋸刃１０ａより鋸刃カッター２の幅に等しい量だけ突出させた状態で停止しているものとする。この時、固定ダイ１０はその上の原反７を吸着保持している。なお、吸着保持する代わりに適当なクランプ手段で機械的に固定してもよい。
【００２０】
この状態で、接着剤６を塗布されたカートンブランク１が支持台９の上に送り込まれ、所定位置に位置決めされて固定される。次に、図２（ｂ）に示すように、移動ダイ１１が降下し、固定ダイ１０と協働して原反７の先端を鋸刃カッター２として切り離し、その鋸刃カッター２を真空吸着した状態で、その下方に位置しているカートンブランク１の接着剤６上に押し付ける。これにより、鋸刃カッター２が接着剤６によってカートンブランク１に接着される。その後、移動ダイ１１が上昇して元の位置に戻り、カートンブランク１は次の工程に送られる。また、原反搬送ローラ１３が原反７を鋸刃カッター２の幅に相当する長さだけ送り出し、次の動作に備える。以下、同様の動作を繰り返して、カートンブランク１に対する鋸刃カッター２の接着が次々と行われる。このようにしてカートンブランク１に接着された鋸刃カッター２は、図５に示すようにそのほぼ全長を接着剤６で接着されているが、その両端には、小面積ではあるが接着剤の無い領域が生じている。
【００２１】
次に、図１（ｃ）に示すように、カートンブランク１に接着剤によって接着した鋸刃カッター２の両端を超音波ホーン２０を用いて超音波シールする。この動作は図３、図４に示す超音波シール装置で行う。すなわち、図３、図４において、１５はカートンブランク１を搬送する搬送ローラ、１６は所定位置に停止したカートンブランク１の鋸刃カッター２の両端の下方に位置するように設けられた一対のアンビル、１７は定位置に設けられた装置フレーム、１８はその装置フレーム１７に固定された支持台、１９は支持台１８に上下に移動可能に保持されたホーン保持具、２０はホーン保持具１９に取り付けられた超音波ホーンであり、コンバータ２０ａ、ブースター２０ｂ、ホーン２０ｃ等を備えている。２２はホーン保持具１９を上下動させるエアシリンダである。
【００２２】
ここで、超音波ホーン２０は、所定位置に停止したカートンブランク１に貼り付けられている鋸刃カッター２の両端をそれぞれシールしうるよう２個設けられている。また、その超音波ホーン２０は、ホーン２０ｃの下面（超音波シールを行う面）が、図５に２点鎖線で示すように、鋸刃カッター２の端部及びその少し外側を押圧するように配置されている。ホーン２０ｃの下面の大きさは、鋸刃カッター２の端部の５〜２０ｍｍ程度の長さ部分、好ましくは１０ｍｍ程度の長さ部分をシールしうるように定められている。ここで、超音波ホーン２０による鋸刃カッター２の端部のシール長さが５ｍｍよりも短いと、超音波シールの効果が小さくて鋸刃カッター２の端部が剥がれやすくなり、一方、２０ｍｍよりも長くなると超音波シールの効果はあまり向上しないにも係わらず超音波ホーン２０が大型化し好ましくない。このため、上記の範囲が好ましい。シール条件としては、例えば、シール面積１０×１５ｍｍに対して、２０ＫＨｚで３ｋｇ／ｃｍ2 の圧力で、０．１秒程度の発振でよい。
【００２３】
この超音波シール装置による動作は次のように行われる。図３、図４において、上面に鋸刃カッター２を接着したカートンブランク１が送られてきて、所定位置に位置決めされて固定される。次に、エアシリンダ２２、２２が作動して超音波ホーン２０、２０を鋸刃カッター２の両端にそれぞれ押し当て、超音波シールする。所定時間の超音波シールを行った後、超音波ホーン２０、２０が上昇し、カートンブランク１は次の工程に送り出され、新たなカートンブランク１が送り込まれる。以下、同様な動作を繰り返すことにより、カートンブランク１に対する鋸刃カッター２の両端のシールが行われ、図５に示すように、接着剤６の存在しない部分を含む鋸刃カッター２の端部がカートンブランク１に強く溶着される。なお、鋸刃カッター２の鋸刃２ａは、カートンブランク１に接着してはいけないが、カートンブランク１の鋸刃２ａの下に位置する領域には剥離性のＯＰニスを塗布しており、超音波シールを行っても溶着することはない。もし、溶着する恐れがある場合には、アンビル１６が鋸刃２ａの下を外れるようにしておけばよい。
【００２４】
上記した工程を経たカートンブランク１は、その後、次の工程に送られ、図７に示すように箱状のカートン１Ａに組み立てられ且つ内部にロール状のアルミホイルやラッピングフイルムが収容され、使用される。ここで、鋸刃カッター２は、そのほぼ全長に渡って接着剤６によってカートンブランク１に接着した後、剥がれやすい両端を超音波シールしているので、鋸刃カッター２の両端の接着が確実であり、使用中に剥がれたり、浮き上がったりすることがなく、長期間に渡って安定して使用できる。しかも、鋸刃カッター２の両端は超音波シール時の発熱により、含浸樹脂分が溶融し、更に圧力がかかるため密度が高まって硬度が上がっており、鋸刃両端部の切断性が向上している。このため、アルミホイルやラッピングフイルム等の切断に際し、切断初期に最も力のかかる両端部の切れ味が良いため、フイルムの切断が容易である。鋸刃カッター２の切れ味を確認するため、引張り試験機に、ＸＹＺ軸方向にそれぞれ４５、４５、３０度の角度をつけて鋸刃カッター付のカートンをセットし、フイルムを一定速度（５００ｍｍ／分）で引っ張り、切断時の最大荷重（切れ始めの最大荷重）を測定したところ、通常接着部では３０８ｇであるのに対し、超音波シール部（超音波シール条件は、シール面積１０×１５ｍｍ、発振周波数２０ＫＨｚ、圧力３ｋｇ／ｃｍ2 、発振時間０．１秒）では２２５ｇとなっており、切れ味の良いことが確認できた。
【００２５】
なお、上記実施例では、鋸刃カッター２を接着剤６でカートンブランク１に接着した後、その鋸刃カッター２の両端のみを超音波シールしているが、必要に応じ、両端のみならず、その中間の適当な小領域を超音波シールしてもよい。また、上記実施例では真っ直ぐな鋸刃カッター２を用いた場合を説明したが、図９に示すように、全体が浅いＶ字状をなした鋸刃カッター２Ａをカートンブランク１の掩蓋片１ａの裏面に貼り付けて用いる場合にも本発明は適用可能である。すなわち、このような形状の鋸刃カッター２Ａを用いる場合にも、そのほぼ全長を接着剤によってカートンブランク１に貼り付けた後、鋸刃カッター２Ａの両端（二点鎖線２５で示す領域）を超音波シールすればよい。
【００２６】
更に、鋸刃カッター２Ａを用いる場合、そのほぼ全長を接着剤によってカートンブランク１に貼り付けた後、鋸刃カッター２Ａの両端（二点鎖線２５で示す領域）を超音波シールすると共に、Ｖ字の尖端の部分（二点鎖線２６で示す領域）を超音波シールしてもよい。このようにすると、鋸刃カッター２Ａの剥がれやすい両端及びＶ字の尖端の部分の確実な接着を確保でき、長期間に渡って一層安定して使用できる。
【００２７】
なお、以上の実施例では、鋸刃カッター２の両端、或いは鋸刃カッター２Ａの両端及びＶ字の尖端の部分を超音波シールした場合を説明したが、超音波シールに代えてヒートシールを用いてもよい。
【００２８】
【発明の効果】
以上に説明したように、本発明は、鋸刃カッターを、そのほぼ全長に渡って接着剤によってカートンブランクに接着した後、少なくとも両端を超音波シール又はヒートシールする構成としたことにより、鋸刃カッターの剥がれやすい両端を確実に且つ強く接着することができ、使用中に剥がれるということがなく、しかも、鋸刃カッターの両端は単に小面積を接着すればよいので、その接着に用いる超音波シール装置又はヒートシール装置は小出力の、簡単な構造のものでよく、しかも確実な接着が可能であるという効果を有している。更に、鋸刃カッターの両端を超音波シール又はヒートシールしたことにより、その部分が加圧加熱されて樹脂密度が高まり、このため鋸刃カッターによってラッピングフイルム等を切断する際にもっとも力のかかる両端部の切断性が向上し、切断が容易となるという効果も得られる。
【００２９】
更に、樹脂含浸紙で構成した鋸刃カッターを用いたことにより、含浸樹脂による溶着性を利用でき、換言すれば、樹脂含浸紙にポリエチレンコート等の二次加工を行うことなく、超音波シールやヒートシールを行うことができ、しかも、樹脂含浸紙は吸湿性がほとんど無いため、使用中において吸湿して劣化したり、剥がれるということがないという効果も得られる。
【図面の簡単な説明】
【図１】 （ａ）、（ｂ）、（ｃ）はそれぞれ本発明の接着方法の一実施例の工程を示す概略斜視図
【図２】 （ａ）、（ｂ）はそれぞれ図１に示す接着方法における鋸刃カッターの打ち抜き及び接着工程を実施する装置を異なる作動状態で示す概略側面図
【図３】 図１に示す接着方法に用いる超音波シール装置を示す概略正面図
【図４】 図３に示す装置の概略側面図
【図５】 カートンブランク１に鋸刃カッター２を接着した状態を示す概略平面図
【図６】 カートンブランク１とそれに貼り付ける鋸刃カッター２を示す概略平面図
【図７】 図６に示す部品で造ったカートンを示す概略斜視図
【図８】 カートンブランクに対する鋸刃カッターの貼り付け位置の異なる例を示す概略平面図
【図９】 鋸刃カッターの変形例を示す概略平面図
【符号の説明】
１Ａ カートン
１ カートンブランク
２ 鋸刃カッター
２ａ、２ｂ 鋸刃
５ 接着剤ノズル
６ 接着剤
７ 原反
１０ 固定ダイ
１１ 移動ダイ
２０ 超音波ホーン[0001]
[Industrial application fields]
The present invention is aluminum foil in the production of saw blade cartons with cutter housing the wrapping film or the like, about the method of bonding the saw blade cutter to the carton blank.
[0002]
[Prior art]
Conventionally, a metal saw blade cutter with a saw blade on the side edge is attached to a rectangular carton containing aluminum foil and plastic wrapping film in a wound state, and aluminum foil and wrapping film are pulled out. The one configured to be cut off using the saw blade cutter is widely used. However, the metal saw blade cutter could not be incinerated and had a problem in disposal. Therefore, it has been proposed to use a non-metal saw blade cutter such as paper, for example, a saw blade cutter made of vulcanized fiber, instead of the metal saw blade cutter. No. 6-144425.
[0003]
Adhesion of non-metallic saw blade cutters such as those made of vulcanized fiber to carton blanks is not possible using caulking like metal saw blade cutters. The adhesive (glue) was used. Further, in the above Japanese Patent Laid-Open No. 6-48428, the entire saw blade cutter is bonded by ultrasonic welding, and in Japanese Patent Laid-Open No. 6-144425, the saw blade cutter is spotted with ultrasonic welding or adhesive. After temporary bonding, the whole was ultrasonically bonded or heat-sealed.
[0004]
[Problems to be solved by the invention]
However, if the entire saw blade cutter is bonded to the carton blank using an adhesive, both ends of the saw blade cutter may float up during use and may deteriorate in appearance or become unusable. It was. As a result of examining the cause of this problem, the following items were found. That is, when the saw blade cutter is bonded to the carton blank with an adhesive, the adhesive application width and application length of the saw blade cutter are set in order to prevent the adhesive from spreading by crimping and leaking out of the saw blade cutter. It is smaller than the width and length, and as a result, there are portions where no adhesive is applied, and in particular, there are portions where no adhesive is present at both ends of the saw blade cutter. Such a part is easy to peel off, and when the saw blade cutter has water absorption, it may be peeled off due to water absorption. Moreover, when an aluminum foil or a wrapping film is cut with a saw blade cutter, a large force is applied to the end portion of the saw blade cutter, and it is easy to peel off from this point. For this reason, during use, many lifts and peelings occurred at both ends of the saw blade cutter.
[0005]
In addition, as shown in JP-A-6-48428 and JP-A-6-144425, when the entire surface of the saw blade cutter is ultrasonically welded, the shape of the horn used for the seal becomes horizontally long and lacks durability. There is a problem that a large output is required to seal a large area. It is possible to use a disk type horn as disclosed in JP-A-6-144425, but in this case, there is a problem that the apparatus becomes complicated. Also, when heat-sealing the entire surface of the saw blade cutter, it requires a large output and the heat-seal surface is elongated, making it difficult to make the temperature uniform and evenly pressed, and uneven adhesion tends to occur. There was a problem that heat sealing took time and productivity was poor.
[0006]
The present invention has been made in view of the above-mentioned problems, and it is preferable to use a non-metallic saw blade cutter as a carton blank without using an ultrasonic sealing device or a heat sealing device having a large output and a complicated structure. An object of the present invention is to provide a method for bonding a saw blade cutter that can be bonded.
[0007]
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a weldable saw composed of a resin-impregnated paper obtained by impregnating a base paper that is made with no size or a small amount of a sizing agent with a resin having a weldability. The blade cutter is bonded to the carton blank with an adhesive over substantially the entire length thereof, and then at least both ends of the saw blade cutter are ultrasonically sealed or heat sealed to the carton blank. The gist is the bonding method.
[0009]
[0010]
[0011]
[Action]
In this onset bright described above, the saw blade cutter, after bonding to the carton blank by the adhesive over its entire length, by the ultrasonically sealed or heat sealed at least at both ends, of the saw blade cutter easily peeled off both ends of the Adhesion is ensured and does not peel off during use, and ultrasonic sealing or heat sealing only has to bond at least a small area at both ends of the saw blade cutter. Alternatively, the heat sealing device may have a simple structure and can be securely bonded. If necessary, not only both ends of the saw blade cutter but also any other appropriate small area may be bonded by ultrasonic sealing or heat sealing. At this time, the area to be ultrasonically sealed or heat-sealed is preferably about 5 to 20 mm in width and length, respectively, because reliable bonding is possible with small energy.
[0012]
Since the saw blade cutter used here is made of resin-impregnated paper, the impregnated resin exhibits weldability, and therefore ultrasonic sealing and heat sealing can be performed without performing secondary processing such as polyethylene coating. It is Ru can. Further, since the resin-impregnated paper has almost no hygroscopicity, it does not deteriorate or peel off due to moisture absorption during use.
[0013]
【Example】
Hereinafter, preferred embodiments of the present invention will be described.
FIG. 6 shows a carton blank 1 and a non-metallic saw blade cutter 2 that are bonded together by a bonding method according to an embodiment of the present invention to be described later. The saw blade cutter 2 is made by cutting and cutting the end of a long raw fabric into a saw blade shape, and has saw blades 2a and 2b on both side edges thereof. The saw blade cutter 2 is attached to the region 3 indicated by the oblique lines on the surface of the carton blank 1, and then the carton blank 1 is assembled in a box shape, so that the saw blade cutter 2 is connected to one saw blade as shown in FIG. A carton 1A attached so that 2a protrudes from the corner can be formed, and aluminum foil, wrapping film, etc. are accommodated in this carton 1A, pulled out at the time of use, and separated by the saw blade 2a of the saw blade cutter 2 Can do. The position where the saw blade cutter 2 is attached to the carton blank 1 is not limited to the position shown in FIG. 6. For example, as shown in FIG. 8, the area 3 A on the back side of the lid piece 1 a of the carton blank 1 (opening sewing machine The region along the eye 4).
[0014]
As a raw material for forming the saw blade cutter 2, a non-metallic material having an appropriate hardness for use as a saw blade and weldability capable of ultrasonic sealing and heat sealing is used. Examples of suitable raw material include resin-impregnated paper obtained by impregnating a base paper made from long fiber wood pulp with no fiber sizing or adding a small amount of sizing agent with a resin having weldability. Can do. Here, the resin impregnation amount of the resin-impregnated paper is preferably 50 to 80 parts by weight of the resin with respect to 100 parts by weight of the impregnating base paper. That is, if the resin content is less than 50 parts by weight, the strength is low and the effect as a saw blade cutter is deteriorated. On the other hand, if it exceeds 80 parts by weight, resin impregnation becomes difficult. . The amount of sizing agent to be added when making the base paper is determined so that the base paper that can be impregnated with the resin in the above range can be made. The resin impregnation amount can be controlled by adjusting (the degree of resistance against liquid penetration).
[0015]
The thickness of the resin-impregnated paper is preferably about 0.2 to 0.4 mm in order to ensure sharpness and strength when used as a saw blade cutter. The resin-impregnated component is a hard water-soluble acrylic resin, and examples thereof include methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, and butyl methacrylate. The resin-impregnated paper is used as a raw material for a saw blade cutter without performing secondary processing such as forming a resin film on the surface.
[0016]
[0017]
Next, a bonding method according to an embodiment of the present invention using the above-described original fabric will be described. First, as shown in FIG. 1A, an adhesive 6 is discharged from an adhesive nozzle 5 and applied to a predetermined position of a carton blank 1 punched into a predetermined shape. This adhesive application can be performed by moving the carton blank 1 in the direction indicated by the arrow with respect to the adhesive nozzle 5. Alternatively, the carton blank 1 may be stopped and the adhesive nozzle 5 may be moved in the direction opposite to the arrow. The adhesive used here is optional such as a hot-melt adhesive, an emulsion-based adhesive, etc. Examples of the hot-melt adhesive include EVA (ethylene vinyl acetate copolymer resin) and APP (actic-polypropylene). , PE (polyethylene), SIS (styrene / isoprene copolymer resin), SBS (styrene / butadiene copolymer resin), polyamide resin, etc. In addition, as the emulsion adhesive, vinyl acetate / acrylic copolymer Examples thereof include resins, modified acrylate copolymer resins, acrylic copolymer resins, and vinyl acetate resins.
[0018]
The application area of the adhesive 6 is determined so that the adhesive 6 exists over almost the entire length of the saw blade cutter 2 as shown by the oblique lines in FIG. 5 in a state where the saw blade cutter 2 is pressed and adhered thereon. It is done. However, the adhesive 6 is considerably smaller than the entire area of the saw blade cutter 2 in order to prevent the adhesive 6 from leaking outside the saw blade cutter 2 when the saw blade cutter 2 is pressed and pressurized. For this reason, in a state where the saw blade cutter 2 is attached, a small area where the adhesive 6 does not exist is formed at both ends of the saw blade cutter 2, for example, about 2 to 5 mm.
[0019]
Next, as shown in FIG. 1 (b), the leading edge of the original fabric 7 is punched into a predetermined shape to form a saw blade cutter, which is pressed onto the adhesive 6 applied to the carton blank 1 and bonded. The saw blade cutter is punched and bonded by the apparatus shown in FIG. That is, in FIG. 2, 8 is a conveyance roller for conveying the carton blank 1, 9 is a support base for supporting the saw blade cutter attaching portion of the carton blank 1, 10 is a fixed die having a saw blade 10a at the tip, and 11 is A moving die provided with a saw blade 11a meshing with the saw blade 10a at the tip, 12 is a cylinder mechanism for moving the moving die 11 up and down, and 13 is a raw material that feeds the raw fabric 7 by a length corresponding to the width of the saw blade cutter 2. It is a conveyance roller. The operation by this apparatus is performed as follows. First, as shown in FIG. 2A, it is assumed that the raw fabric 7 is stopped in a state in which the leading end protrudes from the saw blade 10 a of the fixed die 10 by an amount equal to the width of the saw blade cutter 2. . At this time, the fixed die 10 sucks and holds the original fabric 7 thereon. In addition, you may fix mechanically with a suitable clamp means instead of carrying out adsorption holding.
[0020]
In this state, the carton blank 1 coated with the adhesive 6 is fed onto the support base 9 and positioned and fixed at a predetermined position. Next, as shown in FIG. 2 (b), the moving die 11 descends, and in cooperation with the fixed die 10, the tip of the raw fabric 7 is cut off as the saw blade cutter 2, and the saw blade cutter 2 is vacuum-sucked. In a state, it presses on the adhesive agent 6 of the carton blank 1 located under it. Thereby, the saw blade cutter 2 is bonded to the carton blank 1 by the adhesive 6. Thereafter, the moving die 11 is raised and returned to the original position, and the carton blank 1 is sent to the next step. Also, the original fabric transport roller 13 sends out the original fabric 7 by a length corresponding to the width of the saw blade cutter 2 to prepare for the next operation. Thereafter, the same operation is repeated, and the saw blade cutter 2 is adhered to the carton blank 1 one after another. As shown in FIG. 5, the saw blade cutter 2 bonded to the carton blank 1 is bonded to the entire length with an adhesive 6 as shown in FIG. There is no area.
[0021]
Next, as shown in FIG. 1C, both ends of the saw blade cutter 2 bonded to the carton blank 1 with an adhesive are ultrasonically sealed using an ultrasonic horn 20. This operation is performed by the ultrasonic sealing apparatus shown in FIGS. That is, in FIGS. 3 and 4, 15 is a transport roller for transporting the carton blank 1, and 16 is a pair of anvils provided so as to be positioned below both ends of the saw blade cutter 2 of the carton blank 1 stopped at a predetermined position. , 17 is a device frame provided at a fixed position, 18 is a support base fixed to the device frame 17, 19 is a horn holder movably held on the support base 18, and 20 is a horn holder 19. An attached ultrasonic horn includes a converter 20a, a booster 20b, a horn 20c, and the like. An air cylinder 22 moves the horn holder 19 up and down.
[0022]
Here, two ultrasonic horns 20 are provided so as to seal both ends of the saw blade cutter 2 attached to the carton blank 1 stopped at a predetermined position. In addition, the ultrasonic horn 20 is such that the lower surface of the horn 20c (the surface on which ultrasonic sealing is performed) presses the end of the saw blade cutter 2 and a little outside thereof as shown by a two-dot chain line in FIG. Has been placed. The size of the lower surface of the horn 20c is determined so that a length portion of about 5 to 20 mm, preferably a length portion of about 10 mm, of the end portion of the saw blade cutter 2 can be sealed. Here, when the seal length of the end of the saw blade cutter 2 by the ultrasonic horn 20 is shorter than 5 mm, the effect of the ultrasonic seal is small, and the end of the saw blade cutter 2 is easily peeled, whereas the length of the seal is less than 20 mm. However, if the length is too long, the ultrasonic horn 20 becomes undesirably large because the ultrasonic sealing effect is not improved so much. For this reason, said range is preferable. As the sealing condition, for example, for a sealing area of 10 × 15 mm, oscillation of about 0.1 second may be performed at a pressure of 3 kg / cm 2 at 20 KHz.
[0023]
The operation by this ultrasonic sealing device is performed as follows. 3 and 4, the carton blank 1 having the saw blade cutter 2 bonded to the upper surface is sent and positioned and fixed at a predetermined position. Next, the air cylinders 22 and 22 are operated, and the ultrasonic horns 20 and 20 are pressed against both ends of the saw blade cutter 2 to perform ultrasonic sealing. After performing ultrasonic sealing for a predetermined time, the ultrasonic horns 20 and 20 are raised, the carton blank 1 is sent to the next step, and a new carton blank 1 is sent. Thereafter, the same operation is repeated to seal both ends of the saw blade cutter 2 with respect to the carton blank 1, and as shown in FIG. 5, the end portion of the saw blade cutter 2 including the portion where the adhesive 6 does not exist is formed. It is strongly welded to the carton blank 1. The saw blade 2a of the saw blade cutter 2 should not be bonded to the carton blank 1, but a peelable OP varnish is applied to the region located under the saw blade 2a of the carton blank 1, Even if sonic sealing is performed, welding does not occur. If there is a risk of welding, the anvil 16 may be removed from under the saw blade 2a.
[0024]
The carton blank 1 that has undergone the above-described process is then sent to the next process, assembled into a box-like carton 1A as shown in FIG. 7, and a roll-shaped aluminum foil or wrapping film is accommodated therein and used. The Here, since the saw blade cutter 2 is bonded to the carton blank 1 with the adhesive 6 over almost the entire length thereof, both ends that are easily peeled off are ultrasonically sealed. Yes, it can be used stably over a long period of time without peeling off or floating during use. Moreover, both ends of the saw blade cutter 2 are melted by the heat generated during ultrasonic sealing, and the pressure is applied to increase the density and the hardness. The cutting performance at both ends of the saw blade is improved. Yes. For this reason, when cutting an aluminum foil, a wrapping film or the like, the sharpness of both end portions to which the most force is applied at the initial stage of cutting is good, so that the film can be easily cut. To check the sharpness of the saw blade cutter 2, set the carton with the saw blade cutter at 45, 45, and 30 degrees in the XYZ axis direction on the tensile tester, and set the film at a constant speed (500mm / min. ) And the maximum load at the time of cutting (maximum load at the beginning of cutting) was measured, and it was 308 g for the normal bonded part, whereas the ultrasonic seal part (ultrasonic seal condition was a seal area of 10 × 15 mm, oscillation) It was 225 g at a frequency of 20 KHz, a pressure of 3 kg / cm 2 , and an oscillation time of 0.1 seconds, and it was confirmed that the sharpness was good.
[0025]
In the above-described embodiment, after the saw blade cutter 2 is bonded to the carton blank 1 with the adhesive 6, only the both ends of the saw blade cutter 2 are ultrasonically sealed. An appropriate small region in the middle may be ultrasonically sealed. Moreover, although the case where the straight saw blade cutter 2 was used was demonstrated in the said Example, as shown in FIG. 9, the saw blade cutter 2A in which the whole became shallow V shape was used for the lid piece 1a of the carton blank 1 The present invention can also be applied to the case where it is attached to the back surface. That is, even when the saw blade cutter 2A having such a shape is used, the entire length of the saw blade cutter 2A is affixed to the carton blank 1 with an adhesive, and then both ends of the saw blade cutter 2A (the region indicated by the two-dot chain line 25) are exceeded. What is necessary is just to sound-seal.
[0026]
Further, when the saw blade cutter 2A is used, the entire length of the saw blade cutter 2A is attached to the carton blank 1 with an adhesive, and then both ends of the saw blade cutter 2A (regions indicated by two-dot chain lines 25) are ultrasonically sealed and V-shaped. The tip portion (region indicated by a two-dot chain line 26) may be ultrasonically sealed. If it does in this way, the reliable adhesion | attachment of the both ends which are easy to peel off of the saw blade cutter 2A, and the V-shaped point part can be ensured, and it can use it more stably over a long period of time.
[0027]
In addition, although the above example demonstrated the case where the both ends of the saw blade cutter 2 or both ends of the saw blade cutter 2A and the V-shaped pointed portion were ultrasonically sealed, a heat seal was used instead of the ultrasonic seal. May be.
[0028]
【The invention's effect】
As described above, the onset Ming, the saw blade cutter, after bonding to the carton blank by the adhesive over its entire length, with the construction of ultrasonic sealing or heat sealing at least two ends, the saw Both ends of the blade cutter that can be easily peeled can be securely and strongly bonded to each other, so that they do not peel off during use, and both ends of the saw blade cutter need only be bonded to a small area. The sealing device or the heat sealing device may have a simple structure with a small output, and has an effect that reliable bonding is possible. Furthermore, both ends of the saw blade cutter are subjected to ultrasonic sealing or heat sealing, and the portion is pressurized and heated to increase the resin density. For this reason, both ends that are most powerful when cutting a wrapping film or the like with a saw blade cutter are used. The effect that the cutting property of the part is improved and the cutting becomes easy is also obtained.
[0029]
Furthermore, by using a saw blade cutter made of resin-impregnated paper, the weldability by the impregnated resin can be used, in other words, without performing secondary processing such as polyethylene coating on the resin-impregnated paper, Ki out by performing the heat sealing teeth may, resin-impregnated paper, since almost no hygroscopicity, deteriorated by moisture absorption during use, there is also an effect that is not that peeled off.
[Brief description of the drawings]
FIGS. 1A, 1B and 1C are schematic perspective views showing steps of an embodiment of the bonding method of the present invention. FIGS. 2A and 2B are respectively shown in FIGS. FIG. 3 is a schematic side view showing a device for performing a punching and bonding process of a saw blade cutter in the bonding method in different operating states. FIG. 3 is a schematic front view showing an ultrasonic sealing device used in the bonding method shown in FIG. Fig. 5 is a schematic side view of the apparatus shown in Fig. 3. Fig. 5 is a schematic plan view showing a state in which the saw blade cutter 2 is bonded to the carton blank 1. Fig. 6 is a schematic plan view showing the carton blank 1 and the saw blade cutter 2 attached thereto. 7 is a schematic perspective view showing a carton made of the components shown in FIG. 6. FIG. 8 is a schematic plan view showing different examples of the attachment position of the saw blade cutter to the carton blank. FIG. 9 is a modification of the saw blade cutter. Schematic plan view Description]
1A Carton 1 Carton Blank 2 Saw Blade Cutter 2a, 2b Saw Blade 5 Adhesive Nozzle 6 Adhesive 7 Original Fabric 10 Fixed Die 11 Moving Die 20 Ultrasonic Horn

Claims (1)

無サイズで若しくは少量のサイズ剤を添加して抄造した原紙に溶着性を有する樹脂を含浸させてなる樹脂含浸紙で構成された、溶着可能な鋸刃カッターを、そのほぼ全長に渡って接着剤によってカートンブランクに接着し、次いで前記鋸刃カッターの少なくとも両端を前記カートンブランクに対して超音波シール又はヒートシールすることを特徴とする鋸刃カッターの接着方法。 A weldable saw blade cutter composed of a resin-impregnated paper made by impregnating a base paper that has been made non-sized or added with a small amount of sizing agent with a weldable resin. The saw blade cutter is bonded to a carton blank, and then at least both ends of the saw blade cutter are ultrasonically sealed or heat sealed to the carton blank.
JP33492194A 1994-12-20 1994-12-20 How to bond saw blade cutter Expired - Fee Related JP3894964B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP33492194A JP3894964B2 (en) 1994-12-20 1994-12-20 How to bond saw blade cutter
KR1019960704375A KR100235827B1 (en) 1994-12-20 1995-12-20 Bonding method of a sawtooth cutter sawtooth cutter and combination of acarton blank and a sawtooth cutter
PCT/JP1995/002619 WO1996019343A1 (en) 1994-12-20 1995-12-20 Method of bonding saw blade cutter, saw blade cutter and combination of carton blank and saw blade cutter
GB9812808A GB2323074B (en) 1994-12-20 1995-12-20 Sawtooth cutter
GB9617012A GB2301310B (en) 1994-12-20 1995-12-20 Bonding method of a sawtooth cutter and combination of a carton blank and a sawtooth cutter
GB9902930A GB2331288B (en) 1994-12-20 1995-12-20 Sawtooth cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33492194A JP3894964B2 (en) 1994-12-20 1994-12-20 How to bond saw blade cutter

Publications (2)

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JPH08174720A JPH08174720A (en) 1996-07-09
JP3894964B2 true JP3894964B2 (en) 2007-03-22

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KR (1) KR100235827B1 (en)
GB (1) GB2301310B (en)
WO (1) WO1996019343A1 (en)

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JPH1020103A (en) * 1996-07-05 1998-01-23 Dainippon Printing Co Ltd Antidazzle film
GB9620296D0 (en) 1996-09-28 1996-11-13 Carton Edge Ltd Apparatus for mounting a cutting strip
JP2006123436A (en) * 2004-10-29 2006-05-18 Masayuki Kato Method of bonding using water-soluble paste and bonding structure
JP2014180774A (en) * 2013-03-18 2014-09-29 Dainippon Printing Co Ltd Bag making machine and bag making method

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JPS6357224A (en) * 1986-08-28 1988-03-11 錦明印刷株式会社 Manufacture of roll wound body housing
JPH04208447A (en) * 1990-11-30 1992-07-30 Mitsui Toatsu Chem Inc Carton-feeding device in film-cutter-fitting device
US6173876B1 (en) * 1991-09-12 2001-01-16 Oji Paper Co., Ltd. Vulcanized fiber sheet having a serrated cutting edge, a carton having said sheet adhered thereto, and a method of adhesion thereof
JPH06144425A (en) * 1992-10-30 1994-05-24 Honshu Paper Co Ltd Two-stage sticking method for fiber sawtooth cutting edge to carton blank
JPH06182906A (en) * 1992-12-15 1994-07-05 Honshu Paper Co Ltd Bonding method for saw teeth made of vulcanized fiber at high speed

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WO1996019343A1 (en) 1996-06-27
KR100235827B1 (en) 1999-12-15
GB2301310B (en) 1999-06-30
JPH08174720A (en) 1996-07-09
GB9617012D0 (en) 1996-09-25
GB2301310A (en) 1996-12-04

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