JPS63242627A - 高周波ウエルダ - Google Patents

高周波ウエルダ

Info

Publication number
JPS63242627A
JPS63242627A JP62076227A JP7622787A JPS63242627A JP S63242627 A JPS63242627 A JP S63242627A JP 62076227 A JP62076227 A JP 62076227A JP 7622787 A JP7622787 A JP 7622787A JP S63242627 A JPS63242627 A JP S63242627A
Authority
JP
Japan
Prior art keywords
electrode
mold
temperature
resin
frequency welder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62076227A
Other languages
English (en)
Other versions
JPH0450178B2 (ja
Inventor
Tsuguo Hiiro
日色　嗣生
Hiroshi Matsuzaki
博 松崎
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.)
POPII SANGYO KK
Original Assignee
POPII 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 POPII SANGYO KK filed Critical POPII 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

Abstract

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

Description

【発明の詳細な説明】 〔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
波ウェルダの改良に関し、特に誘電損の小さい樹脂を溶
着φ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
物性を有するフィルムが市場に進出している。従来、樹
脂フィルムの溶着・溶断は主に高周波ウェルダやヒート
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〕
従来の高周波ウェルダは、ポリ塩化ビニル等の比較的誘
電損の高い樹脂フィルムの溶着・溶断にｔｔ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φ溶断は行なうことができなかった。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
のフィルム包装は行なわれている。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
は不可能であった。また、延伸処理されたフィルムをヒ
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った。
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、延伸処理したフィ
ルムでも溶着・溶断が可能な高周波ウェルダを提供する
ことを目的とする。
〔問題点を解決するための手段〕
本発明の高周波ウェルダは、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・溶断する高周波ウェルダにおいて、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〕
本発明の高周波ウェルダによれば、電極を加熱する手段
を設けたことにより、従来と同じ電圧を印加し高周波の
周波数が同一であったとしても、□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ィルムでも効果的に加熱すること
ができ、従来の高周波ウェルダやヒートシーラーでは不
可能であった溶着・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８５℃未満であると、電極に印加
する電圧を高くしても、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８５℃、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っても達成で
きる可使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Φ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ェルダの概略構成図であ
る。第１図において、高圧電源ｌにはチョークコイル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７ノ一ドーカソード
間に、コンデンサ５及びチョークコイル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
べきフィルム状の樹脂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！ｌ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
流電源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２７．１２　ＭＨ
ｚ近傍である。そして、出力は最大８．ＯｋＷまで上昇
させることができる。
実際に、上記高周波ウェルダを用い、下部電極８上に厚
み２８０　ｇ　ｔｓのポリエチレンフィルム２枚を４１
２１し、上部電極７を押つけてポリエチレンフィルムの
中央部を直線状に１１１１幅で接着するという実験を行
なった。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．ｌｋＷ、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（
７）温度が６０℃では出力が３．２ｋＷ−Ｃ’も、４．
１ｋＷでも接着ができなかったが、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８５℃
を超えると、樹脂が部分的に金型電極１１に融着し、フ
ィルムの変形が生じた。なお、出力の大きざにかかわら
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．ＯｋＷ未渦になると
、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った以
外は、上記実施例と同様にしてポリエチレンフィルムの
溶着を行なおうとしたが、溶着できなかった。
〔発明の効果〕
以上詳述したように本発明の高周波ウェルダによれば、
ポリエチレンやポリプロピレン、延伸処理したフィルム
でも溶着・溶断が可能になる等工業上極めて顕著な効果
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ェルダの概略
構成図、第２図及び第３図はそれぞれ同高周波ウェルダ
を用いてポリエチレンフィ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。 ｌ・・・高圧電源、２・・・チョークコイル、３・・・
発振器、４・・・発振用真空管、５・・・コンデンサ、
６・・・チョークコイル、７・・・上部電極、８・・・
下部電極、９・・・作業台、１０・・・樹脂、１１・・
・金型電極、１２・・・加熱器。 出願人代理人　弁理士　鈴江武彦 第１図 第２囚 第３図

Claims (2)

    【特許請求の範囲】
  1. （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
    ウェルダにおいて、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ェルダ。
  2. （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項記載の高周波ウェルダ。
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 true JPS63242627A (ja) 1988-10-07
JPH0450178B2 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)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0852802A (ja) * 1994-08-12 1996-02-27 Piaresu:Kk 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
EP0945247A3 (en) * 1998-03-25 2001-04-11 Idemitsu Petrochemical Co., Ltd. Sealing of polyolefin-based resin, and sealed article of the resin
JP2011047099A (ja) * 2009-07-31 2011-03-10 Yamato Sewing Machine Mfg Co Ltd 高周波ミシン
CN102189681A (zh) * 2010-03-08 2011-09-21 大和缝纫机制造株式会社 高频缝纫机

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0852802A (ja) * 1994-08-12 1996-02-27 Piaresu:Kk 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
EP0945247A3 (en) * 1998-03-25 2001-04-11 Idemitsu Petrochemical Co., Ltd. Sealing of polyolefin-based resin, and sealed article of the resin
JP2011047099A (ja) * 2009-07-31 2011-03-10 Yamato Sewing Machine Mfg Co Ltd 高周波ミシン
CN102189681A (zh) * 2010-03-08 2011-09-21 大和缝纫机制造株式会社 高频缝纫机

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