JPH01160633A - Welding of thermoplastic resin - Google Patents

Welding of thermoplastic resin

Info

Publication number
JPH01160633A
JPH01160633A JP62322097A JP32209787A JPH01160633A JP H01160633 A JPH01160633 A JP H01160633A JP 62322097 A JP62322097 A JP 62322097A JP 32209787 A JP32209787 A JP 32209787A JP H01160633 A JPH01160633 A JP H01160633A
Authority
JP
Japan
Prior art keywords
thermoplastic resin
adherend
welding
electrodes
adherends
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.)
Pending
Application number
JP62322097A
Other languages
Japanese (ja)
Inventor
Jun Futagawa
二川　準
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.)
Nissho Corp
Original Assignee
Nissho Corp
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 Nissho Corp filed Critical Nissho Corp
Priority to JP62322097A priority Critical patent/JPH01160633A/en
Publication of JPH01160633A publication Critical patent/JPH01160633A/en
Pending 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
    • B29C65/04—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
    • B29C65/02—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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/32—Induction
    • 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
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • 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
    • B29C66/731—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 intensive physical properties of the 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
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—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
    • B29C66/81—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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81262—Electrical and dielectric properties, e.g. electrical conductivity
    • B29C66/81263—Dielectric properties
    • 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
    • B29C66/832—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
    • B29C66/70—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
    • B29C66/80—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
    • B29C66/81423—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 concave
    • 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
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • 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
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0006—Dielectric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7148—Blood bags, medical bags

Abstract

PURPOSE:To make it possible to weld a thermoplastic resin having small dielectric loss, by putting an adherend, which consists of an exothermic body generating heat by a high-frequency welder and a thermoplastic resin that is not molten by said welder, between electrodes and generating a high-frequency current between said electrodes. CONSTITUTION:As an exothermic body generating heat by a high-frequency welder, chlorosulfonated polyethylene, chlorinated polyethylene, and also ethylene-vinyl acetate copolymer with 8-35wt.% of vinyl acetate are used. As a resin for adherend, the thermoplastic resin with small dielectric loss, which cannot be welded directly by using a high frequency welder, for example such as polyethylene, polypropylene, etc., is applied. Exothermic bodies 3, 4 and adherends 5, 6 are so lightly pressed with electrodes 1, 2 that said adherends 5, 6 are not broken when welding, and a high-frequency current is generated between said electrodes 1, 2 and said exothermic bodies 3, 4 generate heat. In such a way said adherends 5, 6 are heated, release heat and are molten to be integrated.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は熱可塑性樹脂の溶着方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a method for welding thermoplastic resins.

さらに詳しくは、本発明は高周波ウエルダーを用いても
溶着することができない熱可塑性樹脂を容易にしかも均
一にかつ確実に溶着しうる高周波による熱可塑性樹脂の
溶着方法に関する。More specifically, the present invention relates to a method for welding thermoplastic resins using high frequency waves, which can easily, uniformly, and reliably weld thermoplastic resins that cannot be welded even by using a high frequency welder.

［従来の技術］ 誘電体損失が小さく、高周波ウェルダーを用いて溶着さ
せることができない熱可塑性樹脂を溶着する方法として
は、一般にインパルスシーラーを用いて溶着する方法、
加熱した金型を用いて溶着する方法および超音波発生装
置を用いて溶着する方法が知られている。[Prior Art] As methods for welding thermoplastic resins that have small dielectric loss and cannot be welded using a high-frequency welder, there are generally welding methods using an impulse sealer,
A method of welding using a heated mold and a method of welding using an ultrasonic generator are known.

インパルスシーラーを用いて溶着する方法は、その表面
が平面状である金属製の抵抗発熱体に電流を流して発熱
させ、かかる熱を利用しておもに熱可塑性樹脂からなる
フィルムどうしを帯状または直線状に溶着させる方法で
あり、抵抗発熱体の温度調節が容易であるという長所を
をする。しかしインパルスシーラーを用いて溶着する方
法では、たとえば２枚のシート状の被着体のあいだに硬
度の小さいチューブを挿入して溶着したばあい、チュー
ブが歪曲したり、またチューブと２枚のシートとの境界
面を完全にシールすることができないためにリークが発
生することがあるという欠点がある。The method of welding using an impulse sealer involves passing an electric current through a metal resistance heating element with a flat surface to generate heat, and using this heat to weld films mainly made of thermoplastic resin together into strips or linear shapes. This method has the advantage that the temperature of the resistance heating element can be easily controlled. However, with the method of welding using an impulse sealer, for example, if a tube with low hardness is inserted between two sheet-shaped adherends and welded, the tube may become distorted or the tube and the two sheets may The disadvantage is that leaks may occur due to the inability to completely seal the interface with the

加熱した金型を用いて溶着する方法は、金型を加熱し、
かかる熱を利用して熱可塑性樹脂からなる被着体どうし
を溶着させる方法であり、金型の形状を被着体の形状に
合致させることにより種々の形状の被着体に適合させ、
加熱溶融させることができるという長所を有する。しが
しながら、金型温度は周囲の雰囲気温度によって影響を
受けて変化し、また溶着をくり返し行なうにつれて低下
することがあるので、該金型温度を制御するのはきわめ
て困難である。たとえば、金型温度が高くなり過ぎたば
あいには、溶着した際に被着体が溶融変形して外観不良
となり、また該金型温度が低いばあいには、溶着する時
間が長くなって生産性が低下したり、被着体どうしが完
全に均一に溶着しない、すなわち溶着不良を生じること
がある。The method of welding using a heated mold involves heating the mold,
This is a method of welding adherends made of thermoplastic resin to each other using such heat, and by matching the shape of the mold to the shape of the adherend, it can be adapted to adherends of various shapes,
It has the advantage of being able to be heated and melted. However, it is extremely difficult to control the mold temperature because the mold temperature varies depending on the surrounding atmospheric temperature and may drop as welding is repeated. For example, if the mold temperature becomes too high, the adherend will melt and deform during welding, resulting in poor appearance; if the mold temperature is low, welding will take a long time. Productivity may decrease, and adherends may not be completely uniformly welded together, that is, poor welding may occur.

超音波発生装置を用いて溶着する方法は、超音波発生装
置から発生した超音波を被着体に伝播し、複数の接触さ
れた被着体の境界面に超音波の振動エネルギーにより熱
を発生させ、かかる熱によって被着体どうしを溶着させ
る方法であり、被着体の境界面を溶着するものであるか
ら、溶着による外観不良が発生せず、また熱源を必要と
しないので、容易に被着体どうしを溶着させることがで
きる。しかし超音波発生装置を用いて溶着する方法では
、たとえばポリブタジェン、低密度ポリエチレン、スチ
レン−ブタジエン系エラストマーなどの軟質材料からな
る被着体は発熱溶融しないので、これらの軟質材料を適
用することはできない。またとくに表面上に付着した微
粒子をはじめ、形状、材質、性能などに対して厳しい規
制が設けられ、高い安全性が要求されている、たとえば
輸液バッグ、血液バッグなどの医療用容器を超音波発生
装置を用いて作製するばあい、該容器の表面上に超音波
による振動によって微粒子が発生することがあり、該微
粒子を除去するのに膨大な労力を必要とすることがある
。さらに溶着時には溶融した被着体が流出し、パリが発
生することがある。The method of welding using an ultrasonic generator involves propagating the ultrasonic waves generated by the ultrasonic generator to the adherends, and generating heat by the vibrational energy of the ultrasonic waves at the interface between the adherends that are in contact with each other. This is a method of welding the adherends together using such heat.Since the boundary surfaces of the adherends are welded, there is no appearance defect due to welding, and there is no need for a heat source, so it is easy to weld the adherends together. It is possible to weld objects together. However, with the method of welding using an ultrasonic generator, adherends made of soft materials such as polybutadiene, low-density polyethylene, and styrene-butadiene elastomers do not generate heat and melt, so these soft materials cannot be applied. . In addition, ultrasonic waves are applied to medical containers such as infusion bags and blood bags, which have strict regulations regarding fine particles adhering to their surfaces, shape, material, performance, etc., and require a high level of safety. In the case of manufacturing using an apparatus, fine particles may be generated on the surface of the container due to ultrasonic vibration, and an enormous amount of labor may be required to remove the fine particles. Furthermore, during welding, the molten adherend may flow out and cause flakes.

そこで、前記したようにポリオレフィンは高周波によっ
て溶融し、シールすることが難しいといわれているため
、ポリオレフィンからなる容器は、米国特許第４．１９
１，２３１号明細書に開示されているように、一端を閉
じた円筒状のパリソンを、横方向の両端でシールしうる
ような形状を有するバッグ用金型に入れ、該金型を加熱
して空気圧でパリソンを膨張させることにより製造され
ている。しかしながら、インフレーションで製造してい
るために膜厚が厚く、内容液を完全に排除できないとい
う欠点があった。Therefore, as mentioned above, since polyolefins are said to be difficult to melt and seal under high frequency waves, containers made of polyolefins are manufactured under US Patent No. 4.19.
As disclosed in US Pat. No. 1,231, a cylindrical parison with one end closed is placed in a bag mold having a shape that allows sealing at both lateral ends, and the mold is heated. It is manufactured by inflating a parison with air pressure. However, since it is manufactured by inflation, the film is thick and has the disadvantage that the liquid content cannot be completely removed.

前記したとおり、従来より種々の熱可塑性樹脂の溶着方
法があるにもかかわらず、高周波ウエルダーを用いても
溶着することができない熱可塑性樹脂どうしを容易にし
かも均一かつ確実に溶着しうる熱可塑性樹脂からなる被
着体の溶着方法はまだ見出されていない。As mentioned above, although there are various conventional welding methods for thermoplastic resins, thermoplastic resins that cannot be welded together even with a high-frequency welder can be easily, uniformly and reliably welded together. A method for welding an adherend consisting of the following has not yet been found.

［発明が解決しようとする問題点］ そこで本発明者は、前記のごと〈従来技術の問題点に鑑
みてたとえばオレフィン系樹脂やＡＢＳ樹脂などのよう
な高周波ウエルダーを用いても溶着することができない
熱可塑性樹脂どうしを容易にしかも均一かつ確実に溶着
しうる溶着方法を見出すべく鋭意研究を重ねた結果、本
発明に到達した。[Problems to be Solved by the Invention] Therefore, the inventor of the present invention has solved the problem as described above (in view of the problems of the prior art, for example, it is not possible to weld olefin resins, ABS resins, etc. even by using a high-frequency welder). The present invention was achieved as a result of intensive research to find a welding method that can easily, uniformly, and reliably weld thermoplastic resins together.

［問題点を解決するための手段］ すなわち、本発明は高周波ウエルダーの電極間に、クロ
ロスルホン化ポリエチレン、塩素化ポリエチレン、エチ
レン−酢酸ビニル共重合体（酢酸ビニル含有率二８〜３
５重量％）から選ばれた高周波によって発熱する樹脂か
らなる発熱体および高周波によって溶融しない熱可塑性
樹脂からなる被着体を挟んだのち、該電極間に高周波を
発生させることを特徴とする高周波による熱可塑性樹脂
の溶着方法に関する。[Means for Solving the Problems] That is, the present invention uses chlorosulfonated polyethylene, chlorinated polyethylene, or ethylene-vinyl acetate copolymer (vinyl acetate content: 28 to 3) between the electrodes of a high-frequency welder.
A heating element made of a resin that generates heat by high frequency waves selected from 5% by weight) and an adherend made of a thermoplastic resin that does not melt by high frequencies are sandwiched, and then high frequency waves are generated between the electrodes. This invention relates to a method for welding thermoplastic resin.

［作用および実施例］ 本発明は誘電体損失の小さい熱可塑性樹脂を高周波ウエ
ルダーを用いては加熱溶融させることはできないとされ
ていた従来の技術からみれば意外ともいえる新規な高周
波ウェルダーを用いた溶着方法の採用により、誘電体損
失が小さいために高周波ウェルダーを用いて溶着するこ
とができない熱可塑性樹脂からなる被着体どうしを容易
にしかも均一かつ確実に溶着することをはじめて可能と
したものである。さらに本発明の熱可塑性樹脂の溶着方
法によれば、被着体を約３〜１０秒間ときわめて短時間
で溶着することができるので、該溶着方法は量産性にす
ぐれた溶着方法である。[Operations and Examples] The present invention uses a novel high-frequency welder, which is surprising considering the conventional technology that it was believed that a thermoplastic resin with small dielectric loss could not be heated and melted using a high-frequency welder. By adopting this welding method, it is possible for the first time to easily, uniformly, and reliably weld adherends made of thermoplastic resin, which cannot be welded using a high-frequency welder due to low dielectric loss. be. Further, according to the thermoplastic resin welding method of the present invention, adherends can be welded in a very short time of about 3 to 10 seconds, so this welding method is a welding method with excellent mass productivity.

本発明においては、高周波ウエルダーの電極間に、高周
波ウェルダーで発熱する発熱体および高周波ウエルダー
で溶融しない熱可塑性樹脂からなる被着体を挟んだのち
、該電極間に高周波を発生させることにより被着体が溶
着される。In the present invention, a heating element that generates heat in the high-frequency welder and an adherend made of a thermoplastic resin that does not melt in the high-frequency welder are sandwiched between the electrodes of the high-frequency welder, and then a high-frequency wave is generated between the electrodes to adhere the adherend. The body is welded.

本発明において高周波ウエルダーで発熱する発熱体とし
ては、エチレン−酢酸ビニル共重合体（酢酸ビニル含有
率＝８〜３５重量％）、クロロスルホン化ポリエチレン
、塩素化ポリエチレンなどのような塩素含有合成ゴムを
用いることができる。該発熱体の形状は溶着される被着
体の形状に応じて適宜選択され、たとえば平板状、筒状
などいかなるものであってもよい。さらに必要であるな
らば、高周波ウエルダーの電極上に所望の形状を有する
金型を設け、該金型に発熱体を設置してもよい。In the present invention, as the heating element that generates heat in the high-frequency welder, chlorine-containing synthetic rubber such as ethylene-vinyl acetate copolymer (vinyl acetate content = 8 to 35% by weight), chlorosulfonated polyethylene, chlorinated polyethylene, etc. is used. Can be used. The shape of the heating element is appropriately selected depending on the shape of the adherend to be welded, and may be of any shape, such as a flat plate or a cylinder. Furthermore, if necessary, a mold having a desired shape may be provided on the electrode of the high-frequency welder, and a heating element may be installed in the mold.

本発明において被着体に用いることができる樹脂として
は、たとえばポリエチレン、ポリプロピレン、ポリブタ
ジェン、スチレン−ブタジエン系エラストマー、ポリス
チレン、アクリロニトリル−ブタジエン−スチレン三元
共重合体、エチレン系共重合体などのように直接高周波
ウエルダーを用いては溶着することができない誘電体損
失の小さい熱可塑性樹脂があげられるが、本発明におい
てはこれらの樹脂のみに限定されず、他の誘電体損失の
小さい熱可塑性樹脂を用いることもできる。なお、エチ
レン系共重合体としてエチレン−酢酸ビニル共重合体を
被着体として使用するばあい、酢酸ビニル含有率が６重
量％以下のものを使用する。Examples of resins that can be used for the adherend in the present invention include polyethylene, polypropylene, polybutadiene, styrene-butadiene elastomer, polystyrene, acrylonitrile-butadiene-styrene terpolymer, and ethylene copolymer. Examples include thermoplastic resins with low dielectric loss that cannot be directly welded using a high-frequency welder, but the present invention is not limited to these resins, and other thermoplastic resins with low dielectric loss may be used. You can also do that. In addition, when using an ethylene-vinyl acetate copolymer as an adherend as an ethylene-based copolymer, one having a vinyl acetate content of 6% by weight or less is used.

本発明に用いられる高周波ウエルダーとしては従来より
誘電体損失の大きい熱可塑性樹脂を溶着する際に用いら
れている高周波ウェルダーであればいかなる種類の高周
波ウェルダーを用いてもよく、本発明はかかる高周波ウ
エルダーの種類に限定されるものではない。高周波ウエ
ルダーの周波数および出力は、被着体の大きさや種類な
どによって被着体の溶融条件が異なるので一概には決定
することができないが、通常周波数は１０〜１００ＭＨ
ｚ　、出力は５ｏｗ　〜ｉｏｏｘｗノ範囲内で適宜調整
される。As the high frequency welder used in the present invention, any type of high frequency welder that has been conventionally used for welding thermoplastic resins with large dielectric loss may be used. It is not limited to the type of The frequency and output of a high-frequency welder cannot be determined unconditionally because the melting conditions of the adherend vary depending on the size and type of the adherend, but the usual frequency is 10 to 100 MH.
z, the output is adjusted appropriately within the range of 5ow to iooxw.

高周波ウエルダーの電極間に発熱体を設けたのは、電極
間に発生した高周波で発熱体を発熱させ、かかる発熱に
よって被着体を加熱するためである。高周波による発熱
は被着体の誘電率と誘電圧接に比例するが、誘゛電正接
は被着体を加熱することにより増大することが知られて
いる。したがって、発熱体による加熱に加え、被着体の
誘電正接の大幅な増大によって被着体の誘電体損失が増
大し、高周波溶着が可能になるのである。The reason why the heating element is provided between the electrodes of the high frequency welder is that the heating element generates heat using the high frequency generated between the electrodes, and the adherend is heated by the generated heat. Heat generation due to high frequency waves is proportional to the dielectric constant and dielectric voltage tangent of the adherend, but it is known that the dielectric loss tangent increases by heating the adherend. Therefore, in addition to heating by the heating element, the dielectric loss of the adherend increases due to a significant increase in the dielectric loss tangent of the adherend, making high-frequency welding possible.

本発明においては該電極間に設けられた発熱体の構成と
しては種々のものを適用することができる。つぎにかか
る構成を図面に基づいて説明する。In the present invention, various configurations can be applied to the heating element provided between the electrodes. Next, this configuration will be explained based on the drawings.

第１図および第２図は、電極（１）およびＩ’ＺＪのあ
いだにシート状の発熱体（３）および（４）を設け、さ
らに発熱体（３）および（４）のあいだにシート状の被
着体（５）および（６）を設けたときの本発明の溶着方
法の概略説明図である。In Figures 1 and 2, sheet-shaped heating elements (3) and (4) are provided between the electrode (1) and I'ZJ, and a sheet-shaped heating element (3) and (4) is provided between the heating elements (3) and (4). FIG. 2 is a schematic explanatory diagram of the welding method of the present invention when adherends (5) and (6) are provided.

第１図において、発熱体（３）または（４）のいずれか
一方の発熱によって被着体（５）および（６）を容易に
溶着することができるばあいには、発熱体（３）または
（４）のいずれか一方のみを用いてもよいが、発熱量を
増加させ、溶着時間を短縮させる必要があるばあいには
、発熱体（３）および（４）を併用するのが好ましい。In FIG. 1, if the adherends (5) and (6) can be easily welded by the heat generated by either the heating element (3) or (4), the heating element (3) or Either one of (4) may be used, but if it is necessary to increase the amount of heat generated and shorten the welding time, it is preferable to use the heating elements (3) and (4) together.

第１図に示されるように構成された発熱体（３）および
（４）ならびに被着体（５）および（６）は第２図に示
されるように電極（１）および（２）で発熱体（３）お
よび（４）ならびに被着体（５）および（６）を、溶着
時に被着体（５）および（６）が破断されない程度に軽
く圧し、電極（１ンおよび（２）のあいだに高周波を発
生させ、発熱体（３）および（４）を発熱させることに
より被着体（５）および（６）は加熱され発熱されて溶
融し、−体止される。なお、電極（１）および（２）の
あいだに高周波を加えて溶着するのに要する時間は、発
熱体および被着体の材質やその厚さ、高周波の出力や周
波数などによって異なるので一概には決定することはで
きないが、たとえば発熱体（３）および（４）として軟
質塩化ビニルフィルム（厚さ：０．３＋ｕ＋）を用い、
被着体（５）および（６）として低密度ポリエチレンフ
ィルム（厚さ：　　０．２ｍ＋ｓ）を用い、高周波ウエ
ルダ＝（出力；４ＫＷ、周波数；４ＧＭＨｚ）を用いて
電極（１）および（２）のあいだに電圧２００■、電流
０．３Ａをかけてシール幅５　ｍｍ、シール長さ２００
ｍｍを溶着したばあい、約５秒間であり、本発明の溶着
方法によればきわめて短時間で溶着することができる。The heating elements (3) and (4) and adherends (5) and (6) configured as shown in Figure 1 generate heat at the electrodes (1) and (2) as shown in Figure 2. Press the bodies (3) and (4) and the adherends (5) and (6) lightly to the extent that the adherends (5) and (6) will not break during welding, and By generating high frequency waves between them and causing the heating elements (3) and (4) to generate heat, the adherends (5) and (6) are heated, generate heat, melt, and are fixed. The time required to apply high frequency to weld between 1) and (2) cannot be determined unconditionally because it varies depending on the materials and thickness of the heating element and adherend, the output and frequency of the high frequency, etc. Although it is not possible, for example, using a soft vinyl chloride film (thickness: 0.3+u+) as the heating elements (3) and (4),
Low-density polyethylene films (thickness: 0.2 m+s) were used as adherends (5) and (6), and electrodes (1) and (2) were heated using a high-frequency welder (output: 4 KW, frequency: 4 GMHz). Apply a voltage of 200μ and a current of 0.3A between them to make a seal width of 5 mm and a seal length of 200 mm.
It takes approximately 5 seconds to weld a diameter of mm, and according to the welding method of the present invention, welding can be accomplished in an extremely short time.

第３図は電極上に設けられた金型（′７）および（８）
のあいだにあらかじめ所望の形状に成形された発熱体（
３）および（４）を設け、さらに発熱体（３）および（
４）のあいだにシート状の被着体（５）および（６）な
らびに中心部に円柱状の金型ηが挿入された筒状の被着
体（９）が設けられたばあいの本発明の溶着方法の概略
説明図である。第３図において、金型（７）および（８
）で発熱体（３）および（４）ならびに被着体（５）、
（６）および（９）を軽く圧し、金型（７）および（８
）のあいだに高周波を発生させることにより第４図に示
されるように被着体（５）、（６）および（９）が加熱
され発熱されて溶融し、一体止される。Figure 3 shows molds ('7) and (8) provided on the electrode.
Between the heating element (
3) and (4) are provided, and a heating element (3) and (
4), sheet-like adherends (5) and (6) and a cylindrical adherend (9) with a cylindrical mold η inserted in the center thereof are provided. FIG. 3 is a schematic explanatory diagram of a welding method. In Figure 3, molds (7) and (8) are shown.
) with heating elements (3) and (4) and an adherend (5),
(6) and (9) are lightly pressed, molds (7) and (8) are
), as shown in FIG. 4, the adherends (5), (6), and (9) are heated to generate heat, melt, and are fixed together.

つぎに金型（７）および（８）から溶融、一体止された
溶着体旧）を取り出し、金型（１０）を抜き取ることに
より、第５図に示されるような形状を有する溶着体（Ｉ
Ｉ）がえられる。Next, the melted and integrally fixed welded body (old) is taken out from the molds (7) and (8), and the mold (10) is pulled out, and the welded body (I) having a shape as shown in FIG.
I) can be obtained.

本発明の溶着方法によれば、発熱体および被着体は異質
材料からなるため、被着体を溶融し、一体止する際に被
着体と発熱体とが溶着することがないので、被着体を溶
融し、一体止した後に被着体と発熱体とを容易に分離す
ることができる。According to the welding method of the present invention, since the heating element and the adherend are made of different materials, the adherend and the heating element are not welded together when the adherend is melted and fixed together. After the adherend is melted and fixed together, the adherend and the heating element can be easily separated.

第６図は電極（１）および（２）のあいだにシート状の
被着体（５）および（６）を設け、さらに被着体（５）
および（６）のあいだに内部に発熱体０′２Ｊが埋め込
まれた被着体［Ｆ］を設けたときの本発明の溶イク方法
の概略説明図である。第６図において、電極（１）およ
び（２）のあいだの距離を小さくし、電極（１）および
（２）で被着体（５）、（６）およびｎを軽く圧し、電
極（１）および（２）のあいだに高周波を発生させるこ
とにより第７図に示されるように被着体（５）、（６）
およびｎが溶着一体止され、溶着体０１）かえられる。In Figure 6, sheet-like adherends (5) and (6) are provided between electrodes (1) and (2), and adherend (5) is provided between electrodes (1) and (2).
and (6) is a schematic explanatory diagram of the melting method of the present invention when an adherend [F] in which a heating element 0'2J is embedded is provided. In FIG. 6, the distance between electrodes (1) and (2) is reduced, electrodes (1) and (2) lightly press adherends (5), (6), and n, and electrode (1) By generating high frequency waves between
and n are welded together and the welded body 01) is replaced.

また、くり返し被着体を溶着、一体止することができる
ようにするために、たとえば第８図に示されるように電
極または金型（７）および（８）の表面上に発熱体（３
）および（４）を取り付けてもよい。In addition, in order to be able to repeatedly weld and integrally fix the adherend, for example, as shown in FIG.
) and (4) may be attached.

つぎに実施例に基づいて本発明の熱可塑性樹脂の溶着方
法をさらに詳細に説明するが、本発明はかかる実施例の
みに限定されるものではない。Next, the thermoplastic resin welding method of the present invention will be explained in more detail based on Examples, but the present invention is not limited to these Examples.

実施例１ 高周波ウエルダ−（フィンライト電子精工■製、品番：
　ＬＷＩＩ　４０ＢＯ３Ｂ、出カニ４ＫＶ、周波数＝４
６ＭＩＩｚ　）を用い、該高周波ウエルダーの電極のあ
いだに発熱体としてクロロスルホン化ポリエチレンフィ
ルム（厚さ：　　１．Ｏｍｍ）を２枚設け、該発熱体の
あいだに被着体として低密度ポリエチレン（昭和電工■
製、Ｍ１１２、厚さ：　　Ｏ，ＯＳ關）を２枚重ね合せ
て挿入し、全体を両電極で圧しながら、該電極間に電圧
２００Ｖ、電流０．３Ａをかけ、１０秒間で幅５ｆｉｌ
ｆ１１長さ　２００　ｍ＋ｓを溶着し、一体化した。Example 1 High frequency welder (manufactured by Finlight Denshi Seiko ■, product number:
LWII 40BO3B, output crab 4KV, frequency = 4
6MIIz), two chlorosulfonated polyethylene films (thickness: 1.0 mm) were provided between the electrodes of the high-frequency welder as heating elements, and low-density polyethylene (Showa Denko) was used as an adherend between the heating elements. ■
(manufactured by M112, thickness: O, OS) are stacked and inserted, and while pressing the whole with both electrodes, a voltage of 200 V and a current of 0.3 A are applied between the electrodes, and the width is 5 fil in 10 seconds.
f11 length 200 m+s was welded and integrated.

えられた２枚のポリエチレンフィルムが溶着一体化され
たフィルムの溶着部は透明であり、凹凸もなく均一であ
った。The welded portion of the resulting film, in which two polyethylene films were welded together, was transparent and uniform with no irregularities.

つぎにえられたフィルムの溶着部における剥離強度を求
めたところ、０．８ｋｇ／ｃｏ＋と大きかった。Next, when the peel strength of the welded portion of the obtained film was determined, it was as large as 0.8 kg/co+.

実施例２ 実施例１において、発熱体として塩素化ポリエチレンフ
ィルム（厚さ：　　１．ｈｍ）を２枚設けたものを用い
たほかは実施例１とまったく同様にして被着体を溶着し
て一体化したフィルムを作製した。Example 2 The adherends were welded and integrated in the same manner as in Example 1, except that two sheets of chlorinated polyethylene film (thickness: 1.hm) were used as the heating element. A film was prepared.

えられたフィルムの溶着部は透明であり、凹凸もなく均
一であった。The welded area of the obtained film was transparent and uniform with no irregularities.

つぎにえられたフィルムの溶着部における剥離強度を求
めたところ、０．６ｋｇ／ａｍと大きく、実施例１でえ
られた２枚のポリエチレンフィルムが溶着一体化された
フィルムと同様に実用上充分に満足しうる強度を有する
ものであった。Next, when the peel strength of the welded part of the obtained film was determined, it was found to be as large as 0.6 kg/am, which is sufficient for practical use as in the film obtained in Example 1 in which two polyethylene films were welded together. It had a strength that was satisfactory.

実施例３ 実施例１において、発熱体としてエチレン−酢酸ビニル
共重合体フィルム（三井ポリケミカル■製、Ｐ−２８０
５、厚さ：　　０．４ｓｖ）を２枚設けたものを用いた
ほかは実施例１とまったく同様にして被着体を溶着して
一体化したフィルムを作製した。Example 3 In Example 1, an ethylene-vinyl acetate copolymer film (manufactured by Mitsui Polychemical Co., Ltd., P-280) was used as the heating element.
An integrated film was produced by welding adherends in exactly the same manner as in Example 1, except that two sheets with a thickness of 0.4 sv) were used.

えられたフィルムの溶着部は透明であり、凹凸もなく均
一であった。The welded area of the obtained film was transparent and uniform with no irregularities.

つぎにえられたフィルムの溶着部における剥離強度を求
めたところ、０．８ｋｇ／ｃ１１と大きかった。Next, when the peel strength of the welded portion of the obtained film was determined, it was as large as 0.8 kg/c11.

実施例４ 実施例１で用いた高周波ウエルダーを用い、該高周波ウ
ェルダーの電極のあいだに発熱体としてクロロスルホン
化ポリエチレンフィルム（厚さ：　　１．ｏｍｍ）　２
枚を設け、該発熱体のあいだに被着体としてポリエチレ
ンインフレフィルム（厚さ：　　０．１ｍｍ）の一端を
挿入し、全体を両電極で圧しながら、該電極間に電圧２
００Ｖ　、電流０．３Ａをかけ、該被着体の一端の幅５
ｍｍ、長さ２００　ｍｉを溶着し、一体化した。Example 4 Using the high frequency welder used in Example 1, a chlorosulfonated polyethylene film (thickness: 1.0 mm) was placed between the electrodes of the high frequency welder as a heating element.
One end of a polyethylene inflation film (thickness: 0.1 mm) is inserted as an adherend between the heating elements, and while pressing the whole with both electrodes, a voltage of 2 is applied between the electrodes.
00V, a current of 0.3A is applied, and the width of one end of the adherend is 5.
mm, length 200 mi were welded and integrated.

つぎに該インフレフィルムの他端にボートに金型が挿入
されたポリエチレン製パイプ状ボート（内径；１５ｍｍ
、外径：１８ｍｍ）を挿入し、ついでインフレフィルム
およびパイプ状ボートを所望の形状を有する金型電極の
あいだに挿入してはさんだ後、この金型電極間に電圧２
００ＶＳ電流０．３Ａをかけてボートとインフレフィル
ムを溶着一体化し、ポート付輸液バッグ（容ｊｌ：５０
０ｍ１　）を作製した。えられたポート付輸液バッグの
斜視図を第９図に示す。第９図において、０４）はボー
ト、旧は輸液バッグである。Next, a polyethylene pipe-shaped boat (inner diameter: 15 mm) with a mold inserted into the boat is attached to the other end of the inflation film.
, outer diameter: 18 mm), then insert the inflation film and the pipe-shaped boat between the mold electrodes having the desired shape, and then apply a voltage of 2 between the mold electrodes.
Apply a current of 0.3 A to fuse the boat and the inflation film to form an infusion bag with a port (capacity: 50
0 m1) was produced. A perspective view of the obtained infusion bag with a port is shown in FIG. In FIG. 9, 04) is a boat, and 04) is an infusion bag.

えられたポート付輸液バッグの溶着部は透明であり、凹
凸もなく均一であった。The welded portion of the resulting ported infusion bag was transparent and uniform with no irregularities.

つぎに該ポート付輸液バッグにエアーを送入し、耐圧（
空気圧：　　０．７ｋｇ／ｅｊ）テストを行なったが、
リークなどの異常はなかった。さらに該ボート付輸液バ
ッグ内に水５００　ｍｌを注入し、該ボート付輸液バッ
クを高さ１ｍがら落下させても破裂などの損傷などはま
ったく生じなかった。Next, air is introduced into the infusion bag with a port to withstand pressure (
Air pressure: 0.7kg/ej) I did a test, but
There were no leaks or other abnormalities. Furthermore, even when 500 ml of water was poured into the infusion bag with boat and the infusion bag with boat was dropped from a height of 1 m, no damage such as bursting occurred.

［発明の効果］ 上記のように本発明の熱可塑性樹脂の溶着方法は、従来
より誘電体損失が小さく、高周波ウェルダーを用いては
溶着することができないとされていた熱可塑性樹脂を容
易にしがも短時間に均一に溶着させることができ、さら
に溶着の際にたとえば硬度の小さい熱可塑性樹脂がらな
るボート部を２枚のシート状の被着体のあいだに挿入す
るばあいであっても、該ポート部を歪曲させたり、ポー
ト部におけるリークなどを発生させることなく、均一か
つ確実にポート部および被着体を溶着することができる
ので、たとえばポート付輸液バッグ、血液バッグなどの
薬液、体液保存容器など、形状、材質、性能などが厳し
く規制され、しかも高い安全性が要求されるバッグなど
を従来よりも容易に作製することができる。[Effects of the Invention] As described above, the thermoplastic resin welding method of the present invention has a smaller dielectric loss than conventional ones, and it is possible to easily weld thermoplastic resins, which were considered impossible to weld using a high-frequency welder. can be welded uniformly in a short time, and even when welding, for example, when a boat made of a thermoplastic resin with low hardness is inserted between two sheet-like adherends, Since the port and the adherend can be welded uniformly and reliably without distorting the port or causing leaks in the port, it is possible to weld the port and the adherend together, for example, for medical fluids and body fluids such as infusion bags with ports and blood bags. It is now easier to manufacture storage containers and other items such as bags whose shape, material, performance, etc. are strictly regulated, and which require a high level of safety.

また本発明の熱可塑性樹脂の溶着方法によればポリプロ
ピレン製容器などのように従来ではブロー成形により作
製されていた容器なども大規模な金型を必要としないで
容易にかつ短時間で生産することができる。Furthermore, according to the thermoplastic resin welding method of the present invention, containers made of polypropylene, which were conventionally made by blow molding, can be produced easily and in a short time without the need for large-scale molds. be able to.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図〜第８図は本発明の熱可塑性樹脂の溶着方法の概
略説明図、第９図は本発明の実施例３でえられたポート
付輸液バッグの斜視図、第１０図は実施例４でえられた
血液バッグの斜視図である。 （図面の主要符号） （１）、（２）：電　極 （３）、（４）二発熱体 （５）、（６）：被着体 特許出願人　　株式会社ニッショー ５．６：被着体 オ６０ 才４図 第５図 第６図 オフ　図Figures 1 to 8 are schematic illustrations of the thermoplastic resin welding method of the present invention, Figure 9 is a perspective view of an infusion bag with a port obtained in Example 3 of the present invention, and Figure 10 is an example. FIG. 4 is a perspective view of the blood bag obtained in step 4. (Main symbols in the drawings) (1), (2): Electrode (3), (4) Two heating elements (5), (6): Adherent Patent applicant Nissho Co., Ltd. 5.6: Adherent O 60 years old 4 figures 5 figures 6 off figures

Claims (1)

【特許請求の範囲】 １　高周波ウェルダーの電極間に、クロロスルホン化ポ
リエチレン、塩素化ポリエチレン、エチレン−酢酸ビニ
ル共重合体（酢酸ビニル含有率：８〜３５重量％）から
選ばれた高周波によって発熱する樹脂からなる発熱体お
よび高周波によって溶融しない熱可塑性樹脂からなる被
着体を挟んだのち、該電極間に高周波を発生させること
を特徴とする高周波による熱可塑性樹脂の溶着方法。 ２　被着体を２つの発熱体のあいだに設ける特許請求の
範囲第１項記載の熱可塑性樹脂の溶着方法。 ３　被着体が２枚のフィルムのあいだにポートを挿入し
たものである特許請求の範囲第２項記載の熱可塑性樹脂
の溶着方法。 ４　被着体を溶着して袋体とする特許請求の範囲第２項
記載の熱可塑性樹脂の溶着方法。 ５　袋体が医療用容器である特許請求の範囲第４項記載
の熱可塑性樹脂の溶着方法。 ６　医療用容器が薬液保存容器または体液保存容器であ
る特許請求の範囲第５項記載の熱可塑性樹脂の溶着方法
。 ７　被着体がポリエチレン、ポリプロピレン、ポリブタ
ジエン、スチレン−ブタジエン系エラストマー、ポリス
チレン、アクリロニトリル−ブタジエン−スチレン三元
共重合体またはエチレン系共重合体である特許請求の範
囲第１項記載の熱可塑性樹脂の溶着方法。[Claims] 1 Heat is generated between the electrodes of a high-frequency welder by high frequency waves selected from chlorosulfonated polyethylene, chlorinated polyethylene, and ethylene-vinyl acetate copolymer (vinyl acetate content: 8 to 35% by weight). 1. A method for welding thermoplastic resin by high frequency, which comprises sandwiching a heating element made of resin and an adherend made of thermoplastic resin that is not melted by high frequency, and then generating high frequency between the electrodes. 2. The thermoplastic resin welding method according to claim 1, wherein an adherend is provided between two heating elements. 3. The thermoplastic resin welding method according to claim 2, wherein the adherend is two films with a port inserted between them. 4. A thermoplastic resin welding method according to claim 2, which comprises welding adherends to form a bag. 5. The thermoplastic resin welding method according to claim 4, wherein the bag is a medical container. 6. The thermoplastic resin welding method according to claim 5, wherein the medical container is a drug solution storage container or a body fluid storage container. 7. The thermoplastic resin according to claim 1, wherein the adherend is polyethylene, polypropylene, polybutadiene, styrene-butadiene elastomer, polystyrene, acrylonitrile-butadiene-styrene terpolymer, or ethylene copolymer. Welding method.
JP62322097A 1987-12-18 1987-12-18 Welding of thermoplastic resin Pending JPH01160633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62322097A JPH01160633A (en) 1987-12-18 1987-12-18 Welding of thermoplastic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62322097A JPH01160633A (en) 1987-12-18 1987-12-18 Welding of thermoplastic resin

Publications (1)

Publication Number Publication Date
JPH01160633A true JPH01160633A (en) 1989-06-23

Family

ID=18139883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62322097A Pending JPH01160633A (en) 1987-12-18 1987-12-18 Welding of thermoplastic resin

Country Status (1)

Country Link
JP (1) JPH01160633A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55150321A (en) * 1979-12-20 1980-11-22 Sumitomo Bakelite Co Ltd High-frequency sealing method of composite film

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55150321A (en) * 1979-12-20 1980-11-22 Sumitomo Bakelite Co Ltd High-frequency sealing method of composite film

Similar Documents

Publication Publication Date Title
JPS63139726A (en) Welding method for thermoplastic resin
JPH0710275B2 (en) Medical container and method of manufacturing the same
US5507713A (en) Easy-open bag pack, method of forming and system
ES2052417A1 (en) Method and device for manufacturing elexible film pouch, and assembly of ultrasonic hone and anvil
GB1536428A (en) Heat-sealed packages
JPH01160633A (en) Welding of thermoplastic resin
WO2006068207A1 (en) Tubular package and its packaging method and equipment
JPH02269026A (en) Method for mounting port to medical bag
EP0792735A1 (en) Method for sealing the mouth of a flexible sachet or pouch
JPS63272612A (en) Package, method and apparatus for preparing the same
US20040067327A1 (en) Method of joining plastic sheet materials
JP2901474B2 (en) Mouth of medical plastic container and method of manufacturing medical plastic container
JPH01185264A (en) Medical treatment bag and its manufacture
JPS63152554A (en) Bag body and manufacture thereof
JPH0431295B2 (en)
JPH11254558A (en) Die for manufacturing medical treatment bag and manufacture of medical treatment bag using the die
JPS5837144B2 (en) Netsukasoseijiyuushitankunoseizohouhou
JPH0581268B2 (en)
JP2833786B2 (en) Medical liquid container and manufacturing method thereof
JPH0511022B2 (en)
JP4723844B2 (en) Cylindrical package, packaging method and packaging apparatus
JPS63290568A (en) Preparation of medical bag
JP4408461B2 (en) Mold for making a medical bag and method for manufacturing a medical bag using the same
EP0199498A2 (en) Packaging machinery
JPH07171895A (en) Manufacture of plastic container