JPH0134141B2 - - Google Patents

Info

Publication number
JPH0134141B2
JPH0134141B2 JP57099362A JP9936282A JPH0134141B2 JP H0134141 B2 JPH0134141 B2 JP H0134141B2 JP 57099362 A JP57099362 A JP 57099362A JP 9936282 A JP9936282 A JP 9936282A JP H0134141 B2 JPH0134141 B2 JP H0134141B2
Authority
JP
Japan
Prior art keywords
film
welding
polar
synthetic resin
welded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP57099362A
Other languages
Japanese (ja)
Other versions
JPS58217319A (en
Inventor
Toshiki Shojima
Kazuo Minato
Takashi Sugimoto
Hiroshi Kudo
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.)
Idemitsu Petrochemical Co Ltd
Original Assignee
Idemitsu Petrochemical Co Ltd
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 Idemitsu Petrochemical Co Ltd filed Critical Idemitsu Petrochemical Co Ltd
Priority to JP57099362A priority Critical patent/JPS58217319A/en
Publication of JPS58217319A publication Critical patent/JPS58217319A/en
Publication of JPH0134141B2 publication Critical patent/JPH0134141B2/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
    • 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
    • B29C65/02—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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1425—Microwave radiation
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1477—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation making use of an absorber or impact modifier
    • B29C65/1483—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation making use of an absorber or impact modifier coated on the article
    • 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
    • B29C66/70—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
    • B29C66/72—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 structure 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
    • B29C66/80—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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
    • 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
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • 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
    • B29C66/739—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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 本発明は非極性合成樹脂フイルムの溶着方法に
関し、詳しくは非極性の合成樹脂フイルムから袋
等を製造するにあたり、高周波またはマイクロ波
により局部的に加熱して該フイルムを溶着する方
法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for welding a non-polar synthetic resin film, and more specifically, when manufacturing a bag or the like from a non-polar synthetic resin film, the film is locally heated by high frequency or microwave to weld the film. Regarding the method of welding.

ポリエチレン、ポリプロピレンなどの合成樹脂
フイルムを用いて袋等を製造する場合、該フイル
ムの溶着方法としては発熱体を用いる熱溶着が最
も一般的であるが、不均一加熱による溶着ムラが
発生したり、特に厚肉フイルムにおいて加熱時間
が長いなど生産性に劣るという欠点がある。 When manufacturing bags and the like using synthetic resin films such as polyethylene and polypropylene, the most common method for welding the films is thermal welding using a heating element, but uneven welding may occur due to uneven heating. Particularly in the case of thick films, the heating time is long and the productivity is poor.

そこで、発熱体を用いて熱伝導により加熱する
外部加熱方式による溶着に代る方法として高周波
またはマイクロ波により合成樹脂フイルム自体を
発熱させる内部発熱方式が近時行なわれるように
なつた。この内部発熱方式による溶着は、熱溶着
すべき部分を効率よく発熱させることができるた
め、均一な溶着が可能であり、しかも溶着部分の
シール強度が大きいという特色がある。 Therefore, as an alternative to the external heating method of welding, which heats the film by heat conduction using a heating element, an internal heating method has recently been used in which the synthetic resin film itself generates heat using high frequency waves or microwaves. Welding using this internal heat generation method is characterized by the fact that heat can be efficiently generated in the parts to be thermally welded, so uniform welding is possible, and the sealing strength of the welded parts is high.

しかし、ポリエチレン、ポリプロピレンなどの
非極性合成樹脂は電気的内部発熱が十分でないた
め、通常の方法では内部発熱方式による溶着を適
用することができない。 However, since non-polar synthetic resins such as polyethylene and polypropylene do not generate sufficient electrical internal heat generation, welding using an internal heat generation method cannot be applied using normal methods.

そのた、非極性合成樹脂の少なくとも片面に
誘電損失係数の大きなシート状材料を積層して高
周波を照射する方法、二枚のフイルムの溶着す
べき面に誘電損失係数の大きな物質を含む接着層
を形成する方法が提案されている。しかし、前者
は局部的加熱が困難であるという欠点があり、後
者は製袋用素材として一般的な筒状フイルムの溶
着ができないこと、袋等を製造した場合に内面に
接着層という異種材料が入るため衛生上の立場な
どから好ましくないこと等の欠点がある。しか
も、手型などの複雑な形状の溶着部を有する場合
に適さないものであつた。 In addition, there is a method in which a sheet material with a large dielectric loss coefficient is laminated on at least one side of a non-polar synthetic resin and irradiated with high frequency waves, and an adhesive layer containing a material with a large dielectric loss coefficient is placed on the sides of two films to be welded. A method has been proposed. However, the former has the disadvantage that localized heating is difficult, while the latter cannot weld cylindrical films, which are commonly used as bag-making materials, and when bags are manufactured, a dissimilar material called an adhesive layer is formed on the inner surface. It has disadvantages such as being undesirable from a sanitary standpoint. In addition, it is not suitable for cases where the welded portion has a complicated shape, such as a hand shape.

本発明の目的は上記のような欠点を解消した非
極性合成樹脂フイルムの溶着方法を提供すること
である。 An object of the present invention is to provide a method for welding non-polar synthetic resin films that eliminates the above-mentioned drawbacks.

本発明は非極性合成樹脂フイルムの溶着に際し
て該フイルムの片面もしくは両面の溶着部外面に
極性物質を塗布し、高周波またはマイクロ波を照
射後、加圧することを特徴とする非極性合成樹脂
フイルムの溶着方法である。 The present invention is characterized in that when welding non-polar synthetic resin films, a polar substance is applied to the outer surface of the welding part on one or both sides of the film, and after irradiation with high frequency or microwave waves, pressure is applied. It's a method.

本発明における非極性合成樹脂フイルムとは、
ポリエチレン、ポリプロピレンなどのポリオレフ
インやポリエステル、ポリカーボネート、ポリス
チレンなどの合成樹脂フイルムを意味し、これら
は高周波やマイクロ波の照射によつて溶着するこ
とができ難いものである。 The non-polar synthetic resin film in the present invention is
It refers to polyolefins such as polyethylene and polypropylene, and synthetic resin films such as polyester, polycarbonate, and polystyrene, which are difficult to weld by high frequency or microwave irradiation.

したがつて、本発明では該フイルムの溶着を行
なうに際して該フイルムの片面もしくは両面の溶
着部外面に極性物質を塗布するのである。ここで
極性物質としては既知のものを任意に使用でき、
たとえばポリ塩化ビニル、ポリ塩化ビニリデン、
ポリビニルアルコール、メラミン樹脂、フエノー
ル樹脂、エポキシ樹脂、尿素樹脂などの合成樹
脂；グリセリン、エチレングリコール、ジエチレ
ングリコールなどの多価アルコール類；チタン酸
バリウム、チタン酸カリウム、シラス粉末、クレ
ー、酸化チタン、硫酸アルミニウムなどの無機物
質等があり、これらを単独であるいは組合せて用
いることができる。 Therefore, in the present invention, when welding the film, a polar substance is applied to the outer surface of the welded portion on one or both sides of the film. Here, any known polar substance can be used,
For example, polyvinyl chloride, polyvinylidene chloride,
Synthetic resins such as polyvinyl alcohol, melamine resin, phenol resin, epoxy resin, urea resin; Polyhydric alcohols such as glycerin, ethylene glycol, diethylene glycol; Barium titanate, potassium titanate, shirasu powder, clay, titanium oxide, aluminum sulfate There are inorganic substances such as, and these can be used alone or in combination.

上記の極性物質は非極性合成樹脂フイルムの片
面もしくは両面であつて溶着を行なうべき個所の
外面に塗布する。たとえば筒状フイルムから製袋
する場合、一定の間隔で該フイルムの巾方向に該
極性物質を帯状に塗布する。また、手袋などの複
雑な形状のものにあつては極性物質によつて手型
を描くように該フイルムに塗布する。このように
極性物質を部分的に塗布する場合、該極性物質を
単独で塗布してもよいが、上記フイルムに印刷を
する際に同時に塗布することもできる。 The above polar substance is applied to one or both sides of the non-polar synthetic resin film on the outer surface of the area to be welded. For example, when making a bag from a cylindrical film, the polar substance is applied in a band shape in the width direction of the film at regular intervals. In the case of objects with complicated shapes, such as gloves, a polar substance is applied to the film so as to draw a hand pattern. When a polar substance is partially applied in this way, the polar substance may be applied alone, but it can also be applied simultaneously when printing on the film.

非極性合成樹脂フイルムに極性物質を部分的に
塗布した後、該フイルムに高周波またはマイクロ
波を照射する。高周波またはマイクロ波の周波数
範囲については3MHzから30000MHzが適当であ
り、好ましい範囲は1000〜10000MHzである。照
射時間は使用する極性物質の種類、高周波または
マイクロ波の周波数などを考慮して適宜決定すれ
ばよい。この照射によつて極性物質を塗布した部
分に相当する非極性合成樹脂フイルムは発熱して
溶着する。 After partially applying a polar substance to a non-polar synthetic resin film, the film is irradiated with high frequency waves or microwaves. As for the high frequency or microwave frequency range, a range of 3 MHz to 30,000 MHz is appropriate, and a preferred range is 1,000 to 10,000 MHz. The irradiation time may be appropriately determined in consideration of the type of polar substance used, the frequency of the high frequency or microwave, and the like. By this irradiation, the non-polar synthetic resin film corresponding to the portion coated with the polar substance generates heat and is welded.

高周波またはマイクロ波を照射した後、非極性
合成樹脂フイルムを加圧して溶着をより完全なも
のとする。加圧は適宜の手段で行なえばよく、た
とえば加圧ロール間を通過させる等の手段を採用
することができる。 After irradiating with high frequency or microwave, the non-polar synthetic resin film is pressurized to make the welding more complete. Pressure may be applied by any appropriate means, such as passing between pressure rolls.

本発明の方法によれば、非極性合成樹脂フイル
ムの溶着シールの均一性が高く、しかもシール強
度の高いものが得られる。また、フイルムの溶着
を希望する部分の外面のみに極性物質を塗布する
ものであり、単純な形状の溶着から複雑な形状の
溶着まで任意に行なうことができる。しかも、溶
着すべき部分に接着剤を用いたり、他の材料を挾
持させる等の処置は全く不要であり、衛生的にす
ぐれているばかりか作業上も簡便であるという利
点を有している。さらに、高周波やマイクロ波の
使用により製袋作業等を高速度かつ連続的に行な
うことができる。特に、本発明の方法は筒状フイ
ルムから製袋する場合に適している。 According to the method of the present invention, it is possible to obtain a welded seal of a non-polar synthetic resin film with high uniformity and high seal strength. Further, the polar substance is applied only to the outer surface of the part of the film where it is desired to be welded, and it is possible to weld any shape from a simple shape to a complex shape. Furthermore, there is no need to use adhesives or to clamp other materials to the parts to be welded, and this has the advantage of being not only hygienic but also easy to work with. Furthermore, by using high frequency waves or microwaves, bag making operations can be performed continuously at high speed. In particular, the method of the present invention is suitable for making bags from cylindrical films.

次に本発明の実施例を示す。 Next, examples of the present invention will be shown.

実施例 １ 低密度ポリエチレン（折径300mm、厚み30μ）
の筒状フイルム原反の片面にフエノール樹脂塗料
を300mmピツチで巾３mmになるように塗布した。
また、該塗布部分より３mmの位置にミシン目を付
した。次いで、2450MHzのマイクロ波を照射した
のち該フイルムをロールで圧着し、さらに巻取り
ロールに巻取ることによつて連結したポリエチレ
ン製袋状物を得た。この袋状部の溶着部分は均一
に溶着されており、しかもそのシール強度は非常
に高かつた。Example 1 Low density polyethylene (folding diameter 300mm, thickness 30μ)
A phenolic resin paint was applied to one side of the cylindrical film material at a pitch of 300 mm to a width of 3 mm.
Additionally, a perforation was made at a position 3 mm from the coated area. Next, after irradiating with 2450 MHz microwaves, the film was crimped with a roll and further wound around a take-up roll to obtain a connected polyethylene bag. The welded portion of this bag-shaped portion was uniformly welded, and the seal strength was extremely high.

実施例 ２ エンボス加工された低密度ポリエチレンフイル
ム（巾270mm、厚み30μ）を２枚重ね、その一方
のフイルムの外面にチタン酸バリウムを含有する
メラミン樹脂塗料を用いて手型を描くように塗布
した。次いで、2450MHzのマイクロ波を照射した
のち該フイルムをロール圧着した。しかる後、こ
のフイルムを手型状に打抜くことにより溶着強度
のすぐれたポリ手袋を得た。Example 2 Two embossed low-density polyethylene films (width 270 mm, thickness 30 μ) were stacked, and a melamine resin paint containing barium titanate was applied to the outer surface of one of the films in a hand-shaped manner. . Next, after irradiating the film with 2450 MHz microwaves, the film was roll-pressed. Thereafter, this film was punched into a hand shape to obtain a polyglot glove with excellent welding strength.

Claims (1)

【特許請求の範囲】[Claims] １ 非極性合成樹脂フイルムの溶着に際して該フ
イルムの片面もしくは両面の溶着部外面に極性物
質を塗布し、高周波またはマイクロ波を照射後、
加圧することを特徴とする非極性合成樹脂フイル
ムの溶着方法。1. When welding a non-polar synthetic resin film, a polar substance is applied to the outer surface of the welded part on one or both sides of the film, and after irradiation with high frequency or microwave,
A method for welding non-polar synthetic resin films, which involves applying pressure.
JP57099362A 1982-06-11 1982-06-11 Welding of non-polar synthetic resin film Granted JPS58217319A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57099362A JPS58217319A (en) 1982-06-11 1982-06-11 Welding of non-polar synthetic resin film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57099362A JPS58217319A (en) 1982-06-11 1982-06-11 Welding of non-polar synthetic resin film

Publications (2)

Publication Number Publication Date
JPS58217319A JPS58217319A (en) 1983-12-17
JPH0134141B2 true JPH0134141B2 (en) 1989-07-18

Family

ID=14245456

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57099362A Granted JPS58217319A (en) 1982-06-11 1982-06-11 Welding of non-polar synthetic resin film

Country Status (1)

Country Link
JP (1) JPS58217319A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209078A (en) * 1984-03-28 1985-10-21 アサヒ繊維機械工業株式会社 Adhesive treatment of fabric and adhesive core
JPS60246876A (en) * 1984-05-22 1985-12-06 アサヒ繊維機械工業株式会社 Adhesive treatment of fabric and adhesive core
JPS61100228A (en) * 1984-10-24 1986-05-19 コーリン電子株式会社 Cuff for hemomanometer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5838294A (en) * 1981-08-03 1983-03-05 イ−・ア−ル・スクイブ・アンド・サンズ・インコ−ポレイテツド Phosphonamidate compound

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5838294A (en) * 1981-08-03 1983-03-05 イ−・ア−ル・スクイブ・アンド・サンズ・インコ−ポレイテツド Phosphonamidate compound

Also Published As

Publication number Publication date
JPS58217319A (en) 1983-12-17

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