JPH0450178B2 - - Google Patents

Info

Publication number
JPH0450178B2
JPH0450178B2 JP7622787A JP7622787A JPH0450178B2 JP H0450178 B2 JPH0450178 B2 JP H0450178B2 JP 7622787 A JP7622787 A JP 7622787A JP 7622787 A JP7622787 A JP 7622787A JP H0450178 B2 JPH0450178 B2 JP H0450178B2
Authority
JP
Japan
Prior art keywords
electrode
mold
temperature
resin
cut
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 - Lifetime
Application number
JP7622787A
Other languages
English (en)
Other versions
JPS63242627A (ja
Inventor
Tsuguo Hiiro
Hiroshi Matsuzaki
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.)
HOPII SANGYO KK
Original Assignee
HOPII SANGYO KK
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 HOPII SANGYO KK filed Critical HOPII SANGYO KK
Priority to JP62076227A priority Critical patent/JPS63242627A/ja
Publication of JPS63242627A publication Critical patent/JPS63242627A/ja
Publication of JPH0450178B2 publication Critical patent/JPH0450178B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • 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
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • 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
    • 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
    • B29C66/7371—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 oriented or heat-shrinkable
    • 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
    • B29C66/83—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
    • 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
    • B29C66/91421—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 joining tools
    • 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
    • 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
    • B29C66/9192—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 in explicit relation to another variable, e.g. temperature diagrams
    • 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
    • B29C66/73—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
    • B29C66/7371—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 oriented or heat-shrinkable
    • B29C66/73711—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 oriented or heat-shrinkable oriented
    • 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
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • 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
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • 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
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/959—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables
    • B29C66/9592—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables in explicit relation to another variable, e.g. X-Y diagrams
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/005—Oriented

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はシート状の樹脂の溶着・溶断に用いら
れる高周波ウエルダの改良に関し、特に誘電損の
小さい樹脂を溶着・溶断するのに適したものであ
る。
〔従来の技術〕
近年、樹脂の多機能化が要求されるのに対応し
て種々の物性を有するフイルムが市場に進出して
いる。従来、樹脂フイルムの溶着・溶断は主に高
周波ウエルダやヒートシーラーを用いて行なわれ
ている。
〔発明が解決しようとする問題点〕
従来の高周波ウエルダは、ポリ塩化ビニル等の
比較的誘電損の高い樹脂フイルムの溶着・溶断に
用いられているが、誘電損の低いポリエチレンや
ポリプロピレンの溶着・溶断を行なうことができ
なかつた。これに対して、ヒートシーラーによる
ポリエチレンやポリプロピレンのフイルム包装に
行なわれている。しかし、例えば架橋処理された
ポリエチレンやポリプロピレンの溶着・溶断は不
可能であつた。また、延伸処理されたフイルムを
ヒートシーラーで溶着しようとすると、熱収縮す
るため、包装等には使用できないという問題があ
つた。
本発明は上記問題点を解決するためになされた
ものであり、ポリエチレンやポリプロピレン、延
伸処理したフイルムでも溶着・溶断が可能な高周
波ウエルダを提供することを目的とする。
〔問題点を解決するための手段〕
本発明の高周波ウエルダは、１対の電極間にシ
ート状の樹脂をはさみ、高周波を印加して上記シ
ート状の樹脂を溶着・溶断する高周波ウエルダに
おいて、上記電極の加熱する手段を設けたことを
特徴とするものである。
なお、本発明において、電極を加熱する手段は
１対の電極のうち一方だけ又は両方の電極に設け
ることができるが、取付けの容易な上部電極側に
設けることが望ましい。
また、電極の温度は65〜110℃に設定すること
が望ましい。
〔作用〕
本発明の高周波ウエルダによれば、電極の加熱
する手段を設けたことにより、従来の同じ電圧を
印加し高周波の周波数が同一であつたとしても、
電極からの電子放射量を増大させることができ、
電流の増大により出力を増大させることができ
る。このため、誘電損の低いポリエチレンやポリ
プロピレン、あるいは延伸処理したフイルムでも
効果的に加熱することができ、従来の高周波ウエ
ルダやヒートシーラーでは不可能であつた溶着・
溶断が行なえるようになる。
本発明において、電極（金型）の温度として適
当な範囲は、65℃〜電極（金型）に樹脂が部分的
に融着して変形等が生じる直前の温度まである。
これは、電極の温度が65℃未満であると、電極に
印加するで電圧を高くしても、樹脂の溶着が困難
になるためである。なお、接着強度の観点から
は、電極の温度は80℃以上であることがより望ま
しい。また、電極の上限温度は、例えばポリエチ
レンの場合95℃、ポリプロピレンの場合は110℃
とすることが望ましい。
なお、上述したような電極からの電子線放射量
の増大は、電極に印加する電圧を高くすることに
よつても達成できる可能性もあると予想される。
しかし、電圧を高くすると電極からの放電が起る
ため、溶着・溶断が不可能になる。
〔実施例〕
以下、本発明の実施例を図面を参照して説明す
る。
第１図は本発明に係る高周波ウエルダの概略構
成図である。第１図において、高圧電源１にはチ
ヨークコイル２を直列に介して、発振器３及び上
部電極７と下部電極８とからなる１対の電極がそ
れぞれ並列に接続されている。上記発振器は、発
振用真空管４のアノードーカソード間に、コンデ
ンサ５及びチヨークコイル６の直列回路を接続し
たものである。上記下部電極８は作業台９に一体
的に固定されており、これらの上面に溶着・溶断
されるべきフイルム状の樹脂１０が重ねられて載
置される。一方、上記上部電極７の下端には、金
型電極１１が上記樹脂１０と対向するように取付
けられている。更に、この金型電極１１には抵抗
ヒータを有する加熱器１２が取付けられている。
上記実施例において用いられた高圧電源１はト
ランスにより200Vの３相交流を昇圧して最大
12kVの交流電流電圧を生成するものである。ま
た、発振器３が発生する高周波の周波数は
27.12MHz近傍である。そして、出力は最大
6.0kwまで上昇させることできる。
実際に、上記高周波ウエルダを用い、下部電極
８上に厚み280μｍのポリエチレンフイルム２枚
を載置し、上部電極７を押しつけポリエチレンフ
イルムの中央部を直線状に１mm幅で接着するとい
う実験を行なつた。この実験では、加熱器１２に
より金型電極１１の温度を変化させ、出力及び溶
着時間は3.2kw、４秒：4.1kw、５秒の２つの条
件にそれぞれ固定した。そして、接着された２枚
のポリエチレンシートの一端を上下に引張り、両
者が剥離したときの荷重を調べた。これらの結果
を第２図及び第３図に示す。
第２図及び第３図から明らかなように、金型電
極１１の温度が60℃では出力が3.2kwでも、
4.1kwでも溶着ができなかつたが、65℃以上で接
着可能となり金型電極１１の温度が高くなるほど
接着強度が向上している。ただし、金型電極１１
の温度が95℃を越えると、樹脂が部分的に金型電
極１１に融着し、フイルルの変形が生じた。な
お、出力の大きさにかかわらず、金型電極１１の
温度と接着強度との関係はほぼ同様な傾向を示
す。ただし、出力が3.0kw未満になると、接着可
能な下限温度が高くなる傾向が認められたので、
出力は3.0kw以上に設定することが望ましい。
比較のために、金型電極１１の加熱を行なわな
かつた以外は、上記実施例と同様にしてポリエチ
レンフイルムの溶着を行なおうとしたが、溶着で
きなかつた。
〔発明の効果〕
以上詳述したように本発明の高周波ウエルダに
よれば、ポリエチレンやポリプロピレン、延伸処
理したフイルムでも溶着・溶断が可能になる等工
業極めて顕著な効果を奏するものである。
【図面の簡単な説明】
第１図は本発明の実施例における高周波ウエル
ダの概略構成図、第２図及び第３図はそれぞれ同
高周波ウエルダを用いてポリエチレンフイルムを
接着した場合の、金型電極の温度と接着強度との
関係を示す特性図である。 １……高圧電源、２……チヨークコイル、３…
…発振器、４……発振用真空管、５……コンデン
サ、６……チヨークコイル、７……上部電極、８
……下部電極、９……作業台、１０……樹脂、１
１……金型電極、１２……加熱器。

Claims (1)

  1. 【特許請求の範囲】 １ １対の電極間にシート状の樹脂をはさみ、高
    周波を印加して上記シート状の樹脂を溶着・溶断
    する高周波ウエルダにおいて、上記電極を加熱す
    る手段を設けたことを特徴とする高周波ウエル
    ダ。 ２ 電極の温度を65〜110℃とすることを特徴と
    する特許請求の範囲第１項記載の高周波ウエル
    ダ。
JP62076227A 1987-03-31 1987-03-31 高周波ウエルダ Granted JPS63242627A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62076227A JPS63242627A (ja) 1987-03-31 1987-03-31 高周波ウエルダ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62076227A JPS63242627A (ja) 1987-03-31 1987-03-31 高周波ウエルダ

Publications (2)

Publication Number Publication Date
JPS63242627A JPS63242627A (ja) 1988-10-07
JPH0450178B2 true JPH0450178B2 (ja) 1992-08-13

Family

ID=13599283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62076227A Granted JPS63242627A (ja) 1987-03-31 1987-03-31 高周波ウエルダ

Country Status (1)

Country Link
JP (1) JPS63242627A (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2782415B2 (ja) * 1994-08-12 1998-07-30 株式会社ピアレス 高周波誘電加熱によるプラスチックの接着法
US5538581A (en) * 1995-02-02 1996-07-23 Davidson Textron Inc. Method for electromagnetically welding thermoplastic articles together
JPH11268134A (ja) * 1998-03-25 1999-10-05 Idemitsu Petrochem Co Ltd ポリオレフィン系樹脂の融着加工法および融着加工製品
JP5413848B2 (ja) * 2009-07-31 2014-02-12 ヤマトミシン製造株式会社 高周波ミシン
JP5626719B2 (ja) * 2010-03-08 2014-11-19 ヤマトミシン製造株式会社 高周波ミシン

Also Published As

Publication number Publication date
JPS63242627A (ja) 1988-10-07

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