JP2009107140A - Ultrasonic welding structure and its method - Google Patents

Ultrasonic welding structure and its method Download PDF

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JP2009107140A
JP2009107140A JP2007279076A JP2007279076A JP2009107140A JP 2009107140 A JP2009107140 A JP 2009107140A JP 2007279076 A JP2007279076 A JP 2007279076A JP 2007279076 A JP2007279076 A JP 2007279076A JP 2009107140 A JP2009107140 A JP 2009107140A
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sewing
film
ultrasonic welding
welding
connection target
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Hirohisa Kida
博久 木田
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    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • 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
    • 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
    • B29C66/723—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 being multi-layered
    • 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
    • B29C66/814—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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/304—Joining through openings in an intermediate part of 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
    • B29C66/70—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
    • B29C66/72—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
    • B29C66/729—Textile or other fibrous material made from plastics
    • 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
    • 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
    • B29K2031/00—Use of polyvinylesters or derivatives thereof as moulding material
    • B29K2031/04—Polymers of vinyl acetate, e.g. PVAc, i.e. polyvinyl acetate
    • 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
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • 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
    • B29L2009/00—Layered products
    • 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
    • B29L2031/48—Wearing apparel
    • B29L2031/4842—Outerwear
    • 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
    • B29L2031/48—Wearing apparel
    • B29L2031/4842—Outerwear
    • B29L2031/485—Jackets
    • 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
    • B29L2031/48—Wearing apparel
    • B29L2031/4842—Outerwear
    • B29L2031/4857—Trousers

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultrasonic welding technique capable of surely welding while avoiding double labor hours. <P>SOLUTION: Front and back sides of a joining part 5 of connection target film 4 is coated with a sewing film 6 having break resistance higher than connection target film 4, a sewing element 8 of a hone 7 and an anvil 9 opposed to the sewing element pressurize with respect to the front and back sides sewing films and the connection target film interposed between them, and the front and back sides sewing films is welded by an ultrasound vibration emitted by the hone through a through-hole passage of the connection target film caused by pressurizing. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、溶融可能な材料の溶着方法に関するものであって、特に、異融点材料を連結する構造及び方法に関する。   The present invention relates to a method for welding a meltable material, and more particularly, to a structure and method for connecting different melting point materials.

今日、異種素材を溶着してなる製品が多く存在するが、例えば、一般的に防水服として使用される樹脂フィルムを使用した服は、縫製加工は針の穴が明き防水服にはならないことから、複数の部材を穴の明かない溶着加工で連結することによって作られる。   Today, there are many products made by welding different kinds of materials. For example, clothes made of resin film, which is generally used as waterproof clothing, have needle holes that do not become waterproof clothing. From the above, it is made by connecting a plurality of members by welding without holes.

その際、服の機能を十分に発揮させるために、各部位に求められる要件を考慮し、樹脂フィルムとなる種々の素材の特性を照らし合わせて最適な素材の樹脂フィルムが選定される。
例えば、顔の目の部分は透明性のあるポリプロピレン。
頭部は、自由が利くよう柔軟性のある酢酸ビニル。
首下の胴体、手足は透湿性のあるポリエステル（透湿性の存在は、高温多湿の環境で着用した時の蒸れを解消し熱中症対策になる。）。 At that time, in order to fully demonstrate the function of the clothes, the requirements of each part are taken into consideration, and the resin film of the optimum material is selected by comparing the characteristics of various materials to be the resin film.
For example, the face eyes are made of transparent polypropylene.
The head is made of flexible vinyl acetate for freedom.
The body and limbs under the neck are breathable polyester (the presence of breathability eliminates the stuffiness when worn in a hot and humid environment and is a measure against heat stroke).

しかしながら、超音波接合では、融点が略等しい素材同士、例えば、ポリプロピレン同士、又はポリエステル同士の超音波溶着では高い効果が得られるが、溶融温度や分子構造が相違するポリプロピレンと酢酸ビニルの溶着、又は酢酸ビニルとポリエステルの溶着では、高い接合力が得られず実用性のある連結が行えないとされている。   However, in ultrasonic bonding, high effects can be obtained by ultrasonic welding of materials having substantially the same melting points, for example, polypropylene or polyester, but fusion of polypropylene and vinyl acetate having different melting temperatures and molecular structures, or In the welding of vinyl acetate and polyester, it is said that high bonding strength cannot be obtained and practical connection cannot be performed.

従来は、ポリプロピレンと酢酸ビニルの溶着は、図４に示すように、酢酸ビニルの溶着部に溶着部と同形状のポリプロピレンのフィルム片を縫着し、その後、ポリプロピレン同士を超音波溶着する手法を採り、酢酸ビニルとポリエステルの溶着にあっては、酢酸ビニルの溶着部に溶着部と同形状のポリプロピレンのフィルム片を縫着し、その後ポリエステルを超音波溶着するといった、縫着により予め溶着部位を形成する手法を採っていた。   Conventionally, as shown in FIG. 4, the welding of polypropylene and vinyl acetate is performed by sewing a piece of polypropylene film having the same shape as the welded portion into the welded portion of vinyl acetate, and then ultrasonically welding the polypropylene together. In the welding of vinyl acetate and polyester, the welded part is preliminarily sewn by sewing, for example, sewing a piece of polypropylene film in the same shape as the welded part on the welded part of vinyl acetate and then ultrasonically welding the polyester. The technique to form was taken.

複層素材にあっては、接合部分についてのみ同種の素材からなる溶着用の層を露出させ（前記溶着部位の形成）、超音波溶着を行なう手法が開示されている（例えば、下記特許文献１参照。）。   In the case of a multilayer material, a technique is disclosed in which a welding layer made of the same kind of material is exposed only at the joint (formation of the welded portion) and ultrasonic welding is performed (for example, Patent Document 1 below). reference.).

特開平１０−２９１０８２号公報Japanese Patent Laid-Open No. 10-291082

しかしながら、前記の如く予め溶着部位を形成する手法は、一の連結を行う際に、縫着と超音波溶着からなる二度の連結作業が伴うという問題がある。本発明は上記実情に鑑みてなされたものであって、二度手間を回避しつつ確実な溶着を可能とする技術を提供することを目的とする。   However, the method of forming the welding portion in advance as described above has a problem that two connection operations including sewing and ultrasonic welding are involved in performing one connection. This invention is made | formed in view of the said situation, Comprising: It aims at providing the technique which enables reliable welding, avoiding a trouble twice.

上記課題を解決するためになされた本発明による超音波溶着構造は、縫着フィルムの溶着部が被連結フィルムの結合部における表裏を貫通する構造を有することを特徴とする。尚、前記縫着フィルムが、前記被連結フィルムに連結されるフィルムとして存在する場合もある。   An ultrasonic welding structure according to the present invention made to solve the above-described problems is characterized in that the welded portion of the sewing film penetrates the front and back of the joint portion of the connected film. Note that the sewing film may exist as a film connected to the connected film.

上記超音波溶着構造は、被連結フィルムの結合部の表裏を当該被連結フィルムよりも耐破断性の高い縫着フィルムで被うと共に、ホーンの縫着子と、当該縫着子に対向するアンビルとで表裏の縫着フィルム及びその間に介在する被連結フィルムに対して加圧し、当該加圧により生じた前記被連結フィルムの貫通路を介して表裏の縫着フィルムを前記ホーンが発する超音波の振動により溶着する超音波溶着方法により形成される。   The ultrasonic welding structure includes a sewn film having a rupture resistance higher than that of the connected film, and a horn sewn element and an anvil facing the sewn element. Pressure applied to the front and back sewing films and the connected film interposed therebetween, and the ultrasonic waves emitted from the horn through the through-holes of the connected film generated by the pressurization are generated by the horn. It is formed by an ultrasonic welding method in which welding is performed by vibration.

本発明による超音波溶着構造及び超音波溶着方法によれば、一度の溶着工程を以って、縫着フィルムの溶着部が被連結フィルムたる酢酸ビニルの結合部における表裏を、所望の断面形状を有する縫い糸の如く貫通する模擬的な縫着構造を形成することができ、防水効果を劣化させることなく確実に異種樹脂フィルムからなる生地を連結することができる。   According to the ultrasonic welding structure and the ultrasonic welding method according to the present invention, the welded portion of the sewing film has a desired cross-sectional shape on the front and back of the joint portion of the vinyl acetate that is the connected film in a single welding step. A simulated sewing structure that penetrates like a sewing thread can be formed, and fabrics made of different resin films can be reliably connected without deteriorating the waterproof effect.

以下、本発明による超音波溶着構造及び当該構造を形作る方法の実施の形態を、二以上の素材からなるフィルムを用いて作業着を縫製する例に基づいて詳細に説明する。   Hereinafter, an embodiment of an ultrasonic welding structure and a method of forming the structure according to the present invention will be described in detail based on an example of sewing work clothes using a film made of two or more materials.

本発明が採用された当該例における作業着（図３参照）は、
顔の目が覗く窓部分１は、見通しの利く透明性のあるポリプロピレン。
頭部２における他の部分は、自由が利くよう柔軟性のある酢酸ビニル。
首下の胴体、手足（胴部３）は透湿性のあるポリエステル。
を採用したものである。 The work clothes (see FIG. 3) in this example where the present invention is adopted are
The window part 1 through which the eyes of the face look is transparent polypropylene with good visibility.
The other part of the head 2 is vinyl acetate which is flexible so as to be free.
The body and limbs (torso 3) under the neck are moisture-permeable polyester.
Is adopted.

ここで用いる超音波溶着方法は、被連結フィルム４の結合部５の表裏を当該被連結フィルム４よりも耐破断性の高い縫着フィルム６で被うと共に、ホーン７の縫着子８と、当該縫着子８に対向するアンビル９とで表裏の縫着フィルム６及びその間に介在する被連結フィルム４に対して加圧をし、当該加圧により生じた前記被連結フィルム４の貫通路１０を介して表裏の前記縫着フィルム６を前記ホーン７が発する超音波の振動により溶着するものである。   The ultrasonic welding method used here covers the front and back of the connecting portion 5 of the connected film 4 with the sewing film 6 having higher breakage resistance than the connected film 4, and the sewing element 8 of the horn 7, The anvil 9 facing the sewing element 8 pressurizes the front and back sewing films 6 and the connected film 4 interposed therebetween, and the through-passage 10 of the connected film 4 generated by the pressurization. The sewing film 6 on the front and back sides is welded by ultrasonic vibration generated by the horn 7.

具体例として、ポリプロピレンが用いられた前記窓部分１と、酢酸ビニルが用いられた頭部２における他の部分の溶着は、ポリプロピレンに比して柔らかく耐破断性の低い酢酸ビニルのシート（ここでは被連結フィルム４）をポリプロピレンのシート（ここでは縫着フィルム６）で挟み（図１（Ａ）参照）、或いは包み込み（図１（Ｂ）参照。当該例は、前記縫着フィルム６が、前記被連結フィルム４に連結されるフィルムである。）、結合部５をホーン７の縫着子８とアンビル９とで挟持し超音波溶着する。   As a specific example, the window portion 1 using polypropylene and the other portion of the head 2 using vinyl acetate are welded to a vinyl acetate sheet (here, softer and less rupture resistant than polypropylene). The connected film 4) is sandwiched between polypropylene sheets (here, the sewing film 6) (see FIG. 1 (A)) or wrapped (see FIG. 1 (B)). The film 5 is connected to the film 4 to be connected.) The connecting portion 5 is sandwiched between the sewing element 8 and the anvil 9 of the horn 7 and ultrasonically welded.

酢酸ビニルが用いられる頭部２と、ポリエステルが用いられた胴部３の溶着にあっては、ポリエステルに比して柔らかく耐破断性の低い酢酸ビニルのシートをポリエステルのシートで挟み（図１（Ａ）参照）、或いは包み込み（図１（Ｂ）参照）、結合部５をホーン７の縫着子８とアンビル９とで挟持し超音波溶着する。   In welding the head portion 2 using vinyl acetate and the body portion 3 using polyester, a vinyl acetate sheet that is softer and less rupture resistant than polyester is sandwiched between polyester sheets (FIG. 1 ( A)) or wrapping (see FIG. 1B), and the coupling portion 5 is sandwiched between the sewing element 8 and the anvil 9 of the horn 7 and ultrasonically welded.

二以上の素材の異なる被連結シート４が重なり合う結合部５にあっては、縫着フィルム６で被連結フィルム４を挟み、或いは包み込み、結合部５をホーンの縫着子８とアンビル９とで挟持し超音波溶着する（例えば、図１（Ｃ）参照）。   In the connecting part 5 where two or more connected sheets 4 made of different materials are overlapped, the connected film 4 is sandwiched or wrapped by the sewing film 6, and the connecting part 5 is joined by the horn sewing element 8 and the anvil 9. Nipping and ultrasonic welding are performed (for example, see FIG. 1C).

上記超音波溶着方法によれば、ホーン７に約２０ＫＨｚ前後の振動を与えて発生する熱により瞬時に溶着するため、柔らかい酢酸ビニルは、縫着子８とアンビル９とで挟持された箇所だけが貫通路１０として除かれ、縫着フィルム６の溶着部１１が被連結フィルム４たる酢酸ビニルの結合部５における表裏を、モノフィラメントの断面やフラットヤーンの断面（図２（Ａ）参照）など自在の断面形状を有する縫い糸の如く貫通する模擬的な縫着構造が形成される。   According to the ultrasonic welding method described above, since the welding is instantaneously caused by the heat generated by applying a vibration of about 20 KHz to the horn 7, the soft vinyl acetate is only held between the stitching element 8 and the anvil 9. The welded portion 11 of the sewing film 6 is removed as the through-passage 10, and the front and back surfaces of the vinyl acetate bonding portion 5 as the connected film 4 can be freely changed, such as a monofilament cross section or a flat yarn cross section (see FIG. 2A). A simulated sewing structure that penetrates like a sewing thread having a cross-sectional shape is formed.

しかも、ホーン７の縫着子８とアンビル９で挟持されることにより生じた貫通路１０が縫着フィルム６の溶融及び固化を以って封じられ、ポリプロピレンと酢酸ビニルといった異種樹脂フィルムにあっても、ポリプロピレン縫い針を用いて縫製する際に生じる針穴を残すことなく複数の生地を連結することができる。   In addition, the through passage 10 generated by being sandwiched between the sewing element 8 and the anvil 9 of the horn 7 is sealed by melting and solidifying the sewing film 6, and is in a different resin film such as polypropylene and vinyl acetate. Also, a plurality of fabrics can be connected without leaving a needle hole generated when sewing using a polypropylene sewing needle.

尚、上記超音波溶着方法に用いるホーン７の形状としては、従来の棒状のホーン７の他、図２（Ｂ）の様に、円状又は円弧状の加圧面（周面）１２に、複数の突起（縫着子８）を整列して突設した形状であっても良い。   In addition, as the shape of the horn 7 used for the ultrasonic welding method, there are a plurality of circular or arcuate pressure surfaces (circumferential surfaces) 12 as shown in FIG. The protrusions (sewing elements 8) may be aligned and protruded.

本発明に拠れば、縫着フィルムと被連結フィルムの素材を適当に選択することによって、縫い糸を用いることなく縫製した場合と同様の連結構造を実現する事ができ、衣類のみならず、その他の生活用品や建築用品といった、樹脂フィルムの連結を必要とする場において幅広く応用することが可能となる。   According to the present invention, by appropriately selecting the material of the sewing film and the film to be connected, it is possible to realize a connection structure similar to that in the case of sewing without using a sewing thread. It can be widely applied in places that require the connection of resin films, such as daily necessities and building supplies.

本発明による超音波溶着構造及び超音波溶着方法の例を示した断面図である。It is sectional drawing which showed the example of the ultrasonic welding structure and ultrasonic welding method by this invention. 本発明による超音波溶着構造の平面図、及び超音波溶着方法に用いるホーンの一例を示した側面図である。It is the top view of the ultrasonic welding structure by this invention, and the side view which showed an example of the horn used for the ultrasonic welding method. 本発明による超音波溶着構造及び超音波溶着方法による縫製される衣服の例である。It is an example of the clothes sewn by the ultrasonic welding structure and ultrasonic welding method by this invention. 本発明による超音波溶着構造及び超音波溶着方法の例を示した断面図である。It is sectional drawing which showed the example of the ultrasonic welding structure and ultrasonic welding method by this invention.

符号の説明Explanation of symbols

１ 窓部分，２ 頭部，３ 胴部，
４ 被連結フィルム，５ 結合部，６ 縫着フィルム，
７ ホーン，８ 縫着子，９ アンビル，
１０ 貫通路，１１ 溶着部，
１２ 加圧面，
1 window, 2 head, 3 torso,
4 connected films, 5 joints, 6 sewing films,
7 horns, 8 stitches, 9 anvils,
10 through passages, 11 welds,
12 pressure surface,

Claims (3)

縫着フィルムの溶着部が被連結フィルムの結合部における表裏を貫通する構造を有する超音波溶着構造。   The ultrasonic welding structure which has the structure where the welding part of a sewing film penetrates the front and back in the coupling | bond part of a to-be-connected film. 前記縫着フィルムが、前記被連結フィルムに連結されるフィルムである前記請求項１に記載の超音波溶着構造。   The ultrasonic welding structure according to claim 1, wherein the sewing film is a film connected to the connected film. 被連結フィルムの結合部の表裏を当該被連結フィルムよりも耐破断性の高い縫着フィルムで被うと共に、ホーンの縫着子と、当該縫着子に対向するアンビルとで表裏の縫着フィルム及びその間に介在する被連結フィルムに対して加圧し、当該加圧により生じた前記被連結フィルムの貫通路を介して表裏の縫着フィルムを前記ホーンが発する超音波の振動により溶着する超音波溶着方法。   Cover the front and back of the connecting portion of the connected film with a sewing film that is more rupture resistant than the connected film, and the sewing film on the front and back with the horn sewing element and the anvil facing the sewing element. And ultrasonic welding that pressurizes the film to be connected interposed therebetween and welds the front and back sewing films by ultrasonic vibration generated by the horn through the through-hole of the film to be connected generated by the pressurization. Method.
JP2007279076A 2007-10-26 2007-10-26 Ultrasonic welding structure and its method Pending JP2009107140A (en)

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* Cited by examiner, † Cited by third party
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CN103355802A (en) * 2013-07-30 2013-10-23 苏州美山子制衣有限公司 Automatic spot hot press machine

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Publication number Priority date Publication date Assignee Title
JPS5329377A (en) * 1976-08-31 1978-03-18 Matsushita Electric Ind Co Ltd Method of jointing of parts consisted of plastic material
JPS58193114A (en) * 1982-05-07 1983-11-10 Daicel Chem Ind Ltd Ultrasonic welding method of laminated film
JPS59169913U (en) * 1983-04-26 1984-11-14 株式会社フジヤマ技研 Envelope-shaped seal structure of thermoplastic film
JPH05138740A (en) * 1991-11-25 1993-06-08 Niyuumo Kogyo Kk Interior material for car
JPH11291348A (en) * 1998-04-06 1999-10-26 Kanegafuchi Chem Ind Co Ltd Heat resistant resin belt and its manufacture
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103355802A (en) * 2013-07-30 2013-10-23 苏州美山子制衣有限公司 Automatic spot hot press machine
CN103355802B (en) * 2013-07-30 2014-07-30 苏州美山子制衣有限公司 Automatic spot hot press machine

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