JPH03261540A - プラスチックシートの連続溶着・切断の方法 - Google Patents

プラスチックシートの連続溶着・切断の方法

Info

Publication number
JPH03261540A
JPH03261540A JP2058029A JP5802990A JPH03261540A JP H03261540 A JPH03261540 A JP H03261540A JP 2058029 A JP2058029 A JP 2058029A JP 5802990 A JP5802990 A JP 5802990A JP H03261540 A JPH03261540 A JP H03261540A
Authority
JP
Japan
Prior art keywords
receiving jig
face
receiving tool
cutting
outer peripheral
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
JP2058029A
Other languages
English (en)
Other versions
JP2893808B2 (ja
Inventor
Masahiko Saito
斎藤　晶彦
Kazuhiro Imaizumi
今泉　和弘
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.)
Sony Corp
Original Assignee
Sony Corp
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Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP2058029A priority Critical patent/JP2893808B2/ja
Publication of JPH03261540A publication Critical patent/JPH03261540A/ja
Application granted granted Critical
Publication of JP2893808B2 publication Critical patent/JP2893808B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • 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
    • 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
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/086—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using a rotary anvil
    • 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
    • B29C65/7435—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 the tool being a roller
    • 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
    • B29C65/7443—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 by means of 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
    • B29C66/41—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
    • B29C66/80—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
    • B29C66/8141—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
    • 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
    • B29C66/8141—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81425—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being stepped, e.g. comprising a shoulder
    • 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
    • B29C66/8141—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • B29C66/8141—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • 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
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • 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
    • B29C65/7439—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 for continuously and longitudinally welding and severing webs
    • 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
    • B29C65/749—Removing scrap
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics

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

Abstract

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

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、熱可塑性のプラスチックシートの積層体を連
続的に線状ないし帯状に溶着するとともに、その溶着部
と平行して切断を行うプラスチックシートの連続溶着・
切断の方法に関するものである。
〔発明の概要〕
本発明は、回転軸を有する円柱状の受治具と、該受治具
外周面に対向して近接して設けた超音波ホーンにより、
プラスチックシートの積層体を、前記超音波ホーンの超
音波振動により連続的に、線状ないし帯状に溶着すると
ともに、その溶着部と平行して切断を行うプラスチック
シートの連続溶着・切断の方法において、前記受治具に
は少なくとも回転軸に略垂直な受治具垂直面を受治具の
外周面に沿って設け、一方、超音波ホーンの先端部には
、受治具外周面に対向して近接する面をもつ外周面対向
部と、前記受治具垂直面に対向して接する平行面をもつ
垂直面対向部を設けて、溶着は前記受治具外周面と前記
外周面対向部の作用で行われ、切断は前記受治具垂直面
と垂直面対向部の作用で行われるようにして、超音波振
動停止時の前記受治具外周面と前記外周面対向部との間
隙を印加される超音波振動の振幅のＸより大きく、また
印加される超音波周期の中で、最近接時の間隙を溶着さ
れるプラスチックシート１枚の厚さよりも小さくなるよ
うに設定することによって、超音波ホーンの先端部およ
び受治具の磨耗が少なく、かつ安定した溶着強度および
確実な切断を行うことができるプラスチックシートの連
続溶着・切断方法である。
〔従来の技術〕
熱可塑性のプラスチックシートの積層体を連続的に線状
ないし帯状に溶着するとともにその溶着部と平行して切
断を行うプラスチックシート（以下、単にシートを記す
）の連続溶着・切断の方法としては、超音波振動を用い
る方法、高周波の電磁波を用いる方法などがあるが、作
業性の良さなどの理由から、最近では超音波振動を用い
る方法がより多く用いられる。
次に、超音波振動を用いたシートの連続溶着・切断方法
の従来例を第７図ないし第１１図を参照して説明する。
第７図は、従来例を示した全体構成図である。
２枚のシート２５ａ、２５ｂは第１のガイドローラ２３
で積層された後に、回転軸を有する円柱状の受治具２２
と該受治具外周面２２ａに対向して近接する面をもつ超
音波ホーン（以下、単にホーンと記す）先端部２１の間
隙に導かれ、そこで溶着および切断が連続的に行われ、
切断された端切れ２７は除かれて端部を溶着された積層
シート２６は第２のガイドローラ２４を通して回収され
る。ここで用いられるホーン先端部２１と受治具外周面
２２ａの近傍の模式的な拡大正面図を第８図に示す。ま
た、第９図、第１０図はその模式的拡大側面図であって
、第９図は、シートの溶着、切断位置を模式的に示しく
２８は溶着部を示す）、第１０図では超音波振動停止時
の位置におけるホーン先端部２１を実線で、また超音波
振動（振幅Ｐ）印加時の振動周期の中で最近接時および
最遠離時におけるホーン先端部２１の位置をいずれも破
線で示している。第７図ないし第９図で示すように、ホ
ーン先端部２１は先端が丸みをもっており、第９図で示
すようにその最先端部で切断が生じ、その周辺部で溶着
が生じるのである。第１０図に示すように超音波振動停
止時のホーン先端部２１と受治具外周面２２ａとの間隙
をＳとすると、切断が生じるためにはＳ≦Ｐ／２でなけ
ればならない。つまり切断のためにはボーン先端部２工
を受治具外周面２２ａに押し当てて接触させなければな
らない。
第１１図は、別の従来例として示したもので、受治具３
２の外周面３２ａに垂直面３２ｂをもつ溝部３２ｃを円
周方向に設け、溝部の角に丸みをもつホーンの先端部３
１を押し当てて切断を行うとともに、溶着をその周辺で
行う（例えば、特開昭６３−１４５０１３を参照）。
〔発明が解決しようとする課題〕
しかしながら、いずれの場合においても、ホーンの先端
部を受治具外周面に押し当てて接触させる必要があり、
必然的にホーン先端部を受治具の一方ないし両方が磨耗
し易い、そのためにホーン先端部と受治具外周面の間隙
の調整やホーン先端部や受治具の交換の頻度が高くなり
、生産性の低下、コストアップを招き、また溶着強度が
安定しなかったり、切断の確実性に欠けるなどの問題が
あった。
〔課題を解決するための手段〕
本発明は、回転軸を有する円柱状の受治具と、該受治具
外周面に対向して近接して設けたホーンによりシート積
層体を前記ホーンの超音波振動により、連続的に線状な
いし帯状に溶着するとともに、その溶着部と平行して切
断を行うシートの連続溶着・切断の方法において、前述
した問題を解決するために、前記受治具には受治具の回
転軸に垂直な受治具垂直面を受治具の端面に設け、一方
、ホーン先端部には受治具外周面に対向して近接する面
をもつ外周面対向部と、前記受治具垂直面に接する平行
面をもつ垂直面対向部を設け、超音波振動停止時の外周
面対向部と受治具外周面との間隙は印加される超音波振
動の振幅のＡより大きく（従って、外周面対向部は受治
具外周面に接触しない）また、超音波振動の周期の中で
、前記受治具外周面と前記外周面対向部の最近接時の間
隙は、溶着されるシート１枚の厚さよりも小さくなるよ
うに設定して行うシートの連続溶着・切断の方法である
。
〔作用〕
前述した方法では、超音波振動によるシートの溶着はホ
ーン先端部の中の外周面対向部と受治具外周面からシー
トに加えられる振動による発熱作用で生じ、一方、シー
トの切断はホーン先端部の中の垂直面対向部と受治具垂
直面からシートに加えられる振動による発熱作用で溶融
することによって生ずる（溶断）。シートの溶着におい
ては、外周面対向部と受治具外周面は直接接触しないの
で、直接接触する場合に比べて、それらの磨耗は著しく
少ない。また、超音波振動の周期の中で、外周面対向部
と受治具外周面の最近接間隙は、溶着されるシート１枚
の厚さより小さいので、積層された２枚のシートのいず
れもが必ず溶融する。
シートの切断においては、垂直面対向部と受治具垂直面
は特に押圧される必要はないので、それらの磨耗は少な
い。
〔実施例〕
本発明の実施例を第１図ないし第６図を参照して説明す
る。
第１図は実施例を示した全体構成図である。２枚のシー
１−１５ａ、１５ｂは第１のガイドローラ１３で積層さ
れた後に、回転軸を有する円柱状の受治具１２とその外
周面すなわち受治具外周面１２ａに対向して近接して設
けたホーン先端部１１０間隙に導かれ、そこで溶着およ
び切断が連続的に行われ、切断された端切れ１７は除か
れ、端部を溶着された積層シート１６は第２のガイドロ
ーラ１４を通して回収される。ここで用いられるホーン
先端部１１と受治具外周面１２ａの近傍の模式的な拡大
正面図を第２図に示す。また、第３図、第４図はその側
面図であって、第３図はシートの溶着、切断位置を模式
的に示しく１８は溶着部を示す）、第４図では、超音波
振動停止時の位置におけるホーン先端部１１を実線で、
また超音波振動（振幅Ｐ）印加時の振動周期の中で最近
接時および最遠離時におけるホーン先端部１１の位置を
いずれも破線で示している。
第１図ないし第３図で示されるように、受治具１２は受
治具の回転軸に垂直な受治具垂直面１２ｂを受治具の端
面に有し、一方、ホーン先端部１１は、受治具外周面１
２ａに対向して近接する面をもつ外周面対向部１１ａと
受治具垂直面１２ｂに対向して接する平行面をもつ垂直
面対向部１１ｂを有する。第２図には、ホーン先端部１
１と受治具２２の間隙に導かれようとしている積層され
た２枚のシート、１５ａ、１５ｂが模式的に示されてい
る。ここでＬはシート１枚の厚さを示す。
第４図で示すように、受治具外周面１２ａと外周面対向
部１１ａの間隙を、超音波振動停止時にはＳ、超音波振
動（振幅Ｐ）が印加されている時の最近接時にはＳ’　
　（＝Ｓ　　％Ｐ）で表わすとすると、Ｓ＞Ｐ／２およ
びｓ　’　＝ｓ−＋Ａｐ＜ｔ、従ってＰ／２＜Ｓ＜ｔ＋
Ｐ／２となるように設定することにより、ホーン先端部
および受治具の磨耗が著しく少なく、しかも、安定した
溶着強度と確実な切断を連続的に行うことができる。
なお、本実施例では、受治具垂直面として、円柱状受治
具の端面を用いたが、第５図および第６図に示すように
、円柱状受治具の外周面に設けた段差部あるいは溝部の
垂直面を受治具垂直面として用いてもよい。
〔発明の効果〕
以上説明したように、本発明によれば、超音波振動を用
いるシートの連続溶着、切断の加工工程において、ホー
ンおよび受治具の磨耗を少なくできるので、安定した溶
着強度および確実な切断が行えるようになる。
また、ホーンや受治具の調整や交換に要する時間を短縮
できるので、その経済的効果は大きい。
【図面の簡単な説明】
第１図ないし第６図は本発明の詳細な説明図で、第１図
は実施例の全体構成を示す斜視図、第２図は実施例の要
部（ホーンと受治具外周面近傍）の模式的正面図、第３
図は実施例におけるシートの溶着、切断位置を示す要部
の模式的拡大側面図、第４図はホーンと受治具外周面の
間隙を示す要部の模式的拡大側面図、第５図は段差部の
受治具垂直面を用いる例、第６図は溝部の受治具垂直面
を用いる例である。 第７図ないし第１１図は従来例の説明図で、第７図は従
来例の全体構成を示す斜視図、第８図は従来例の要部（
ホーンと受治具外周面近傍）の模式的拡大正面図、第９
図は従来例におけるシートの溶着、切断位置を示す要部
の模式的拡大側面図、第１０図はホーンと受治具の外周
面の間隙を示す要部の模式的拡大側面図、第１１図は他
の従来例における槽底を示す要部の模式的拡大側面図で
ある。 なお、図面に用いた符号において、 １１−・−・−・・−・−・ホーン先端部１１ａ・−・
・−一−−−・−外周面対向部１１ｂ−・−・−垂直面
対向部 １２−−−−−−−−・−・−受治具 １２　ａ　−−−−−−−−−−一受治具外周面１２ｂ
−・−−一−−−受治具垂直面 １３・−・−・−−−−−一第１のガイドローラ１５ａ
、ｂ−・シート 第１図　実施例の全体構成と示す斜視図第２図実施例の
要部（ホーンと受治具クト周面近傍）の模式的ｆ面図 ｍ３図実施例にあ・けるシートの溶着、切断４１１置を
示す要部の模式的拡大側面図 第４図ホーンと受治具タト周面の間隙と示す雷邪のオ莫
弐白刃拡大（則面図 第７図 従来例の全体構成と示す釧視図 第６図 溝部の受治具垂直面と用し・る例 と示す要部の模式的拡大側面図 要部の模式的拡大（則面図

Claims (1)

  1. 【特許請求の範囲】 １、回転軸を有する円柱状の受治具と、該受治具外周面
    に対向して近接して設けた超音波ホーンにより、プラス
    チックの積層体を前記超音波ホーンの超音波振動により
    連続的に線状ないし帯状に溶着するとともに、その溶着
    部と平行して切断を行うプラスチックシートの連続溶着
    ・切断の方法において、前記受治具には少なくとも受治
    具の回転軸に略垂直な受治具垂直面を受治具の外周面に
    沿って設け、一方、超音波ホーンの先端部には、前記受
    治具外周面に対向して近接する面をもつ外周面対向部と
    前記受治具垂直面に対向して接する平行面をもつ垂直面
    対向部を設けることを特徴とするプラスチックシートの
    連続溶着・切断の方法。 ２、超音波振動停止時の外周面対向部と受治具外周面と
    の間隙は印加される超音波振動の振幅の１／２よりも大
    きく、また印加される超音波振動の周期の中で、前記受
    治具外周面と前記外周面対向部の最近接時の間隙は溶着
    されるプラスチックシート１枚の厚さよりも小さくなる
    ように設定したことを特徴とする特許請求の範囲第１項
    記載のプラスチックシートの連続溶着・切断の方法。
JP2058029A 1990-03-12 1990-03-12 プラスチックシートの連続溶着・切断の方法 Expired - Fee Related JP2893808B2 (ja)

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JPH03261540A true JPH03261540A (ja) 1991-11-21
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0567825A3 (en) * 1992-04-25 1995-11-02 Beck & Co Packautomaten Apparatus for continuously cutting and welding at least two superposed plastic webs
EP0695628B1 (en) * 1994-08-03 2003-06-25 Mitsubishi Gas Chemical Company, Inc. Sheet-shaped oxygen absorber and manufacturing method thereof
JP2003200499A (ja) * 2002-01-07 2003-07-15 Showa Denko Plastic Products Co Ltd 脱水シートの製造方法、及び脱水シートの製造装置
WO2004091894A1 (en) * 2003-04-18 2004-10-28 I.M.A. Industria Macchine Automatiche S.P.A. A sealing device for sealing and simultaneously cutting a web of material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0567825A3 (en) * 1992-04-25 1995-11-02 Beck & Co Packautomaten Apparatus for continuously cutting and welding at least two superposed plastic webs
EP0695628B1 (en) * 1994-08-03 2003-06-25 Mitsubishi Gas Chemical Company, Inc. Sheet-shaped oxygen absorber and manufacturing method thereof
JP2003200499A (ja) * 2002-01-07 2003-07-15 Showa Denko Plastic Products Co Ltd 脱水シートの製造方法、及び脱水シートの製造装置
WO2004091894A1 (en) * 2003-04-18 2004-10-28 I.M.A. Industria Macchine Automatiche S.P.A. A sealing device for sealing and simultaneously cutting a web of material
CN100357087C (zh) * 2003-04-18 2007-12-26 I.M.A.工业机械自动装置股份公司 一种用来密封和同时切割材料幅材的密封装置
US7412998B2 (en) * 2003-04-18 2008-08-19 I.M.A. Industrie Macchine Automatiche S.P.A. Sealing device for sealing and simultaneously cutting a web of material

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