JPS6334909Y2 - - Google Patents

Info

Publication number
JPS6334909Y2
JPS6334909Y2 JP6363483U JP6363483U JPS6334909Y2 JP S6334909 Y2 JPS6334909 Y2 JP S6334909Y2 JP 6363483 U JP6363483 U JP 6363483U JP 6363483 U JP6363483 U JP 6363483U JP S6334909 Y2 JPS6334909 Y2 JP S6334909Y2
Authority
JP
Japan
Prior art keywords
film
knurling
envelope
width
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
JP6363483U
Other languages
Japanese (ja)
Other versions
JPS59169913U (en
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 filed Critical
Priority to JP1983063634U priority Critical patent/JPS59169913U/en
Publication of JPS59169913U publication Critical patent/JPS59169913U/en
Application granted granted Critical
Publication of JPS6334909Y2 publication Critical patent/JPS6334909Y2/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
    • 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
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/086—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using a rotary anvil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/01—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
    • 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
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • 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
    • B29C66/49—Internally supporting the, e.g. tubular, 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
    • B29C66/80—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
    • B29C66/81433—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 being toothed, i.e. comprising several teeth or pins, or being patterned
    • 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
    • B29C66/81433—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 being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—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 being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined

Landscapes

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

Description

【考案の詳細な説明】 本考案は熱可塑性フイルムを封筒状にシールす
る際のシール部の構造に関するもので、フイルム
重合部を筋目ローレツトにて溶着したことを特徴
とするものである。[Detailed Description of the Invention] The present invention relates to the structure of a sealing part when a thermoplastic film is sealed into an envelope shape, and is characterized in that the overlapping part of the film is welded with a knurling.

最近各種のビンの胴部に適宜なデザインを施し
た筒状の熱収縮フイルムをシユリンク成型するこ
とにより該フイルムをビンの胴部に密着させる表
示形態が採用されている。このビン胴部へのフイ
ルムのシユリンク成型は同種のビンに各種の内容
物を充填した場合の表示形態として便利である
他、流通過程におけるビン破損の保護にも大いに
役立つもので今後ますます増えるものと考えられ
る。 Recently, a display form has been adopted in which a cylindrical heat-shrinkable film with an appropriate design is shrink-molded on the body of various bottles so that the film is brought into close contact with the body of the bottle. This shrink-molding film on the bottle body is not only convenient as a display form when the same type of bottle is filled with various contents, but also greatly useful in protecting bottles from damage during the distribution process, and this will become more common in the future. it is conceivable that.

しかし、これまでに採用されているシユリンク
成型のための筒状フイルムは、ほとんどが熱可塑
性の塩化ビニールやポリエステル等厚さの比較的
薄いフイルムであつた。これは、フイルム原反を
筒状に形成する際接着剤による接着が可能で、仕
上りが良いのと価格が安いため多用されているも
ので、熱溶着するとその部分が熱収縮して、歪の
ない正常な円筒状のフイルムが得られないためで
あつた。 However, most of the cylindrical films for shrink molding that have been employed so far have been relatively thin films such as thermoplastic vinyl chloride or polyester. This is widely used because it can be bonded with adhesive when forming the original film into a cylindrical shape, and it has a good finish and is inexpensive. This was because a normal cylindrical film could not be obtained.

また最近は着色印刷の容易性やビンの保護効果
をより一層増すものとして、厚さ0.1〜0.3mm程度
の発泡ポリスチレンや発泡ポリプロピレン等の発
泡性を有する熱可塑性フイルムをビン胴部へのシ
ユリンク成型材として使用する動きがあるが、こ
の発泡性を有するフイルムは熱伝導性が悪く熱シ
ールは不可能であり、また、フイルム相互を接着
剤にて強固に接着することも発泡性フイルムの性
質上必要な接着強度が得られず実用的には不可能
なものである。従つて、これまで発泡性を有する
フイルムを自動連続的に筒状にシールする装置は
全くなかつた。 Recently, in order to further increase the ease of color printing and the protective effect of bottles, foamable thermoplastic films such as foamed polystyrene and foamed polypropylene with a thickness of about 0.1 to 0.3 mm have been used to shrink the bottle body. There is a movement to use this foaming film as a mold material, but this foaming film has poor thermal conductivity and cannot be heat-sealed.Also, due to the nature of foaming film, it is difficult to firmly bond the films together with adhesive. This is practically impossible because the necessary adhesive strength cannot be obtained. Therefore, until now there has been no apparatus for automatically and continuously sealing a foamable film into a cylindrical shape.

これを解決するには接着時に熱歪の生じない溶
着方法が必要であり、この条件を満たすものとし
ては超音波による溶着がある。しかし、現在市販
されている超音波溶着機はミシン形式のもので、
平面状の２枚のフイルムの端縁を単に溶着するだ
けのものであり、一枚のフイルムを円筒状にかつ
連続的に筒状シールする形態のものはなかつた。 To solve this problem, a welding method that does not cause thermal distortion during bonding is required, and welding using ultrasonic waves satisfies this condition. However, the ultrasonic welding machines currently on the market are in the form of sewing machines.
This method simply welds the edges of two planar films, and there is no such method that continuously seals a single film into a cylindrical shape.

本考案者は上記の如き状況に鑑み種々考察した
結果、超音波溶着の原理を利用して熱可塑性のシ
ール状フイルムを熱変形させることなく連続的に
筒状にシールする装置を先に発明し出願している
（特願昭57−228234号）が、今回の出願は該装置
により成型された封筒状フイルムのシール構造に
関するものである。 As a result of various considerations in view of the above-mentioned circumstances, the present inventor first invented a device that utilizes the principle of ultrasonic welding to continuously seal a thermoplastic sealing film into a cylindrical shape without thermally deforming it. The present application relates to a sealing structure for an envelope-shaped film formed by this apparatus.

本明細書において「封筒状フイルム」というの
は、第１図に示す如く帯状フイルムの両側縁を突
き合せるようにして筒状体を形成し、この突き合
せ部を少しずらせて重合部を設け、この状態でシ
ールして筒状に形成したものを云い、いわゆる封
筒の胴部分の貼り合せ構造と同じ形態であること
から封筒状フイルムと表現したものである。 In this specification, the term "envelope-shaped film" refers to a cylindrical body formed by abutting both side edges of a band-shaped film, as shown in FIG. A film that is sealed in this state and formed into a cylindrical shape is called an envelope-shaped film because it has the same structure as the bonded structure of the body of an envelope.

本考案はフイルムの両側縁を封筒状に一部重合
させ、この重合部を超音波溶着機と筋目ローレツ
トにより加圧してローレツト溶着を施したもので
あるが、このローレツトに至るまでが容易でなか
つたのである。 In the present invention, both edges of the film are partially overlapped in an envelope shape, and this overlapping part is pressurized using an ultrasonic welding machine and a crease knurling to perform knurling welding, but it is not easy to reach this knurling. It was.

すなわち、最初、表面フラツトな幅３ｍ／ｍの
ローラーを使用し、超音波溶着機との間に発泡性
フイルムの重合部を挟持し加圧して封筒状フイル
ムを形成し、これをビン胴部にはめて熱をかけシ
ユリンク包装したところ、溶着部に収縮力の余裕
がないため、この部分が両側からの引張りに耐え
られず破れた。そこで、ローラーの外周面に少し
荒い間隔の１ｍ／ｍ幅の横溝を形成すると共にフ
イルムの直進性を考慮してローラーの幅の中心部
にも幅１ｍ／ｍのリング溝を設けた溝付ローラー
を作成し、これを利用して超音波溶着機により平
面第２図の如き溶着状態のものを作成した。この
封筒状フイルムの溶着部断面は第３図の如く横溝
の部分に突起が生じ、ビンにはめてシユリンク
包装したところ、この突起の部分が立ち上つて
体裁の悪いものとなる。また、このリング溝を設
けたローレツトを用いた場合には、連続走行中の
フイルムの振れ（蛇行）により重合部の端縁
（耳）がリング溝と一致した部分は、耳の部分が
浮いた状態になり、シユリンク包装した際にはこ
の傾向が更に顕著になつて見栄えや手ざわりの悪
いものとなつた。 That is, first, a roller with a width of 3 m/m with a flat surface is used to sandwich the overlapping part of the foam film between it and an ultrasonic welding machine and apply pressure to form an envelope-shaped film, which is then attached to the bottle body. When I put it on, heated it, and wrapped it in a shrink package, the welded part didn't have enough room to shrink, so it couldn't withstand the tension from both sides, and it tore. Therefore, we formed a grooved roller with horizontal grooves of 1 m/m width at slightly rough intervals on the outer peripheral surface of the roller, and also provided a ring groove of 1 m/m width in the center of the width of the roller in consideration of the straightness of the film. was prepared, and using this, a welded state as shown in FIG. 2 was prepared using an ultrasonic welding machine. As shown in FIG. 3, the cross section of the welded portion of this envelope-like film has protrusions in the transverse grooves, and when it is placed in a bottle and shrink-wrapped, the protrusions stand up and make it look unsightly. In addition, when using a knurling with this ring groove, the part where the edge (lug) of the overlapping part coincides with the ring groove due to the deflection (meandering) of the film during continuous running may cause the edge part to float. This tendency became even more pronounced when the product was shrink-wrapped, resulting in a poor look and feel.

なお、図中，′はフイルム、は溶着部、
はリング溝により生じた突起である。 In addition, in the figure, ' is the film, is the welded part,
is a protrusion caused by the ring groove.

上述した本考案者の実験は、直径約７cmのビン
用で、厚さ0.2ｍ／ｍの発泡性を有する帯状のフ
イルムを使用し、これを長手方向に二つ折にした
状態での幅が約110ｍ／ｍの封筒状フイルムを作
成するためのもので、筒状のシール部の幅が約３
ｍ／ｍのものである。この程度の大きさの封筒状
フイルム作成においては、通常の自動シール装置
ではシール部が約１ｍ／ｍ程度振れる。そして、
シール部の幅は狭い程良いが、これも接着力によ
り限度があり、特に熱伝導性の悪い発泡性の熱可
塑性フイルムにおいては、このシール部の接着力
とシユリンク包装した場合のシール部の破壊とい
う相反する問題が顕在しているのでシール幅を狭
くするのは困難を伴う課題である。この点、本考
案者が先に発明した前記のシール装置において
は、シール幅３ｍ／ｍとして設計しフイルムの振
れを0.5ｍ／ｍ程度に押えたものになつている。 The inventor's experiment described above was for a bottle with a diameter of about 7 cm, using a foaming strip film with a thickness of 0.2 m/m, and when folded in half in the longitudinal direction, the width was about 7 cm. This is for creating an envelope-shaped film of 110m/m, and the width of the cylindrical seal part is approximately 3
m/m. When producing an envelope-shaped film of this size, a normal automatic sealing device swings the sealing portion by about 1 m/m. and,
The narrower the width of the seal, the better, but there is a limit to this depending on the adhesive strength.Especially in the case of foamed thermoplastic films with poor thermal conductivity, the adhesive strength of the seal and the destruction of the seal when Shrink packaging Because these contradictory problems have emerged, narrowing the seal width is a difficult task. In this regard, the aforementioned sealing device previously invented by the present inventor is designed with a sealing width of 3 m/m, and the deflection of the film is suppressed to about 0.5 m/m.

しかし、この装置においても、前記した溝付ロ
ーラーでは安全性において心配があり、さらには
シール面が多いと収縮力がなくなるためシユリン
クの際破れやすいという問題点をも考慮して、更
に考察、実験を重ねた結果本考案に至つたもので
ある。 However, even with this device, there are concerns about the safety of the grooved rollers mentioned above, and further consideration was given to the problem that if there are many sealing surfaces, the shrinkage force is lost, so it is easy to tear during shrinkage, and further studies and experiments were conducted. As a result of repeated efforts, we came up with this idea.

本考案は第４図に示す如く、ローラーの外周面
に幅方向に平行な細かい筋目を均一に設けた筋目
ローレツトによりフイルムの重合部を超音波溶
着したもので、この筋目ローレツトの筋目は第５
図に拡大して示す如くピツチ１ｍ／ｍの三角歯型
の外周頂部を少し削り取つて平坦部′を形成し
たものである。 As shown in Fig. 4, the present invention ultrasonically welds the overlapping portion of the film using a knurling, which has fine knurls uniformly provided in the width direction on the outer circumferential surface of the roller.
As shown in the enlarged figure, the top of the outer periphery of a triangular tooth shape with a pitch of 1 m/m is slightly shaved off to form a flat part'.

本考案はこの筋目ローレツトを第６図の如
く、フイルム，′の端部を重合して形成した
筒状の内側に配置し、その外側に超音波溶着機の
ヘツドを配置して、筋目ローレツトを回転さ
せると共にヘツドをも同調させて連続的に重合
部の溶着を行なうものである。この際、筋目ロー
レツトは、その幅方向の端面（図中では右側面）
が外側のフイルム端部よりもやや外側になるよ
うに配置することによつて、第７図に示す如く外
側のフイルム端部は溶着部に埋め込まれた状態
となり、またローレツトの谷に相当する未溶着部
分の外側フイルム端部′も溶着によるヒケの
窪み内に沈んだ状態となるので、現実的には指
先の感触にも現れない程度のものとなる。この筋
目ローレツトと外側フイルム端部との位置関係
はフイルムの最大振れの際でも、ローレツトの幅
からフイルム端部がはみ出さないように定める必
要があるが、本考案者が先に出願した装置におい
ては、このずらし寸法は0.5ｍ／ｍで充分であり、
特にその溶着外表面はフラツトなヘツドにより
押圧されて溶着されるものであるから、溶着表面
は微小のヒケによる凹凸が生じる程度で滑らかで
あり、デザイン的にも優れた最小幅のシール部が
得られるものである。 In the present invention, as shown in Fig. 6, the groove knurling is arranged inside a cylindrical shape formed by overlapping the ends of the film, and the head of an ultrasonic welding machine is placed outside of the tube. The overlapping parts are continuously welded by rotating and synchronizing the head. At this time, the groove knurling is done on the end surface in the width direction (the right side in the figure).
By arranging the film so that it is slightly outside of the outer film end, the outer film end becomes embedded in the welded part as shown in Fig. 7, and there is also a gap corresponding to the valley of the knurling. Since the outer film end ′ of the welded portion also sinks into the depression caused by the welding, the sink mark is practically invisible to the touch of the fingertip. The positional relationship between the groove knurling and the outer film edge must be determined so that the film edge does not protrude from the width of the knurling even when the film is at its maximum deflection. , this displacement dimension of 0.5m/m is sufficient,
In particular, since the welding outer surface is pressed and welded by a flat head, the welding surface is smooth with only slight unevenness due to sink marks, and a seal portion with the minimum width that is excellent in terms of design can be obtained. It is something that can be done.

なお、重合部における内側のフイルムの端部
は第７図の如くシールされず浮いた状態のまま
であるが、この部分はビンにかぶせた際内側にな
るのと、厚さが0.2ｍ／ｍであるのでシユリンク
包装時には何ら支障のないものである。 Note that the inner edge of the film at the overlapping part is not sealed and remains floating as shown in Figure 7, but this part is on the inside when placed over the bottle, and the thickness is 0.2 m/m. Therefore, there is no problem at all during shrink packaging.

本考案に係る上記の封筒状フイルムは、ビン
の胴部にはめて熱を加えシユリンク包装した場合
においても、重合部の溶着が平行な筋目ローレツ
トであるため、溶着部に加わる両側からの引張り
力は、均一に残つている未溶着部分により吸収
され溶着部が破れることはなく、美しくシユリン
クできるものである。 Even when the above-mentioned envelope-shaped film according to the present invention is fitted into the body of a bottle and subjected to heat and shrink-wrapped, the welding at the overlapping part is a parallel knurling, so the tensile force applied to the welding part from both sides is absorbed by the uniformly remaining unwelded parts, and the welded parts do not tear and can be shrunk beautifully.

なお、本考案においては、上記の筋目ローレツ
トのみで充分であるが、このローレツトの中央に
0.5ｍ／ｍ程度のリング状の細溝を設けてみたと
ころ、フイルムの直進性はやや向上した程度であ
るため、細溝加工によるコストや仕上りのデザイ
ン等を考慮して現実的には筋目ローレツトのみを
実施している。 In addition, in this invention, the above-mentioned groove knurling alone is sufficient, but in the center of this knurling
When we tried creating a ring-shaped narrow groove of about 0.5 m/m, the straightness of the film was only slightly improved, so considering the cost of narrow groove processing and the design of the finish, it is realistic to use a groove knurl. only.

上記した本考案は、最近流行しつつある、発泡
性を有する熱可塑性の封筒状フイルム形成用とし
て種々苦労して考案したが、このローレツトは従
来の塩化ビニルフイルム等の熱可塑性フイルムに
ついても適用できることは実験の結果明らかであ
る。また、上記した実施例の寸法は直径約７cm程
度のいわゆる小径ビン用のものであるが、大径の
ビン用についてもフイルムの厚さが同程度であれ
ば上記寸法の筋目ローレツトを利用することがで
きるものである。 The above-mentioned present invention was devised with great difficulty for forming thermoplastic envelope-shaped films with foaming properties, which have recently become popular, but it is also possible to apply this knurling to conventional thermoplastic films such as vinyl chloride films. is clear from the experimental results. Furthermore, although the dimensions in the above embodiment are for so-called small-diameter bottles with a diameter of about 7 cm, the groove knurling of the above-mentioned dimensions can also be used for large-diameter bottles as long as the film thickness is about the same. It is something that can be done.

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

第１図は本考案に係る封筒状フイルムの斜視
図、第２図は溝付ローラーによる溶着部の拡大部
分平面図、第３図は第２図の縦断側面図、第４図
は本考案に使用する筋目ローレツトの正面図、第
５図はローレツトの筋目の拡大側面図、第６図は
溶着状態を示す部分平面図、第７図は本考案に係
る溶着部の横断面図、第８図は第７図の下方から
みた平面図である。 ，′……フイルム、……溶着部、……
突起、……リング溝による突起、……筋目ロ
ーレツト、′……平坦部、……超音波溶着機
のヘツド、……フイルム端部、……溶着部、
……未溶着部分、……ヒケ、……封筒状フ
イルム。 Fig. 1 is a perspective view of an envelope-shaped film according to the present invention, Fig. 2 is an enlarged partial plan view of the welded part by the grooved roller, Fig. 3 is a longitudinal side view of Fig. 2, and Fig. 4 is a perspective view of the envelope-shaped film according to the present invention. FIG. 5 is an enlarged side view of the grooves in the knurling used, FIG. 6 is a partial plan view showing the welded state, FIG. 7 is a cross-sectional view of the welded part according to the present invention, and FIG. 8 is a plan view seen from below in FIG. 7; ,′...Film,...Welded part,...
Protrusion, ... protrusion by ring groove, ... knurling, '... flat part, ... head of ultrasonic welding machine, ... end of film, ... welded part,
...Unwelded parts, ...sink marks, ...envelope-like film.

Claims (1)

【実用新案登録請求の範囲】 １ 熱可塑性帯状フイルムの両側縁の一部を重合
させて連続的に封筒状に形成するに際し、均一
な細かい筋目ローレツトによりフイルムの重合
部を超音波溶着してなる熱可塑性フイルムの封
筒状シール構造。 ２ 筋目ローレツトが、その幅の中心部にリング
状の細溝を有するものである実用新案登録請求
の範囲第１項記載の熱可塑性フイルムの封筒状
シール構造。[Scope of Claim for Utility Model Registration] 1. When a part of both side edges of a thermoplastic film strip is polymerized to continuously form an envelope shape, the overlapping part of the film is ultrasonically welded by uniform fine knurling. Envelope-shaped seal structure of thermoplastic film. 2. The thermoplastic film envelope-shaped seal structure according to claim 1, wherein the groove knurling has a ring-shaped narrow groove at the center of its width.
JP1983063634U 1983-04-26 1983-04-26 Envelope-shaped seal structure of thermoplastic film Granted JPS59169913U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1983063634U JPS59169913U (en) 1983-04-26 1983-04-26 Envelope-shaped seal structure of thermoplastic film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1983063634U JPS59169913U (en) 1983-04-26 1983-04-26 Envelope-shaped seal structure of thermoplastic film

Publications (2)

Publication Number Publication Date
JPS59169913U JPS59169913U (en) 1984-11-14
JPS6334909Y2 true JPS6334909Y2 (en) 1988-09-16

Family

ID=30193817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1983063634U Granted JPS59169913U (en) 1983-04-26 1983-04-26 Envelope-shaped seal structure of thermoplastic film

Country Status (1)

Country Link
JP (1) JPS59169913U (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009012779A (en) * 2007-06-29 2009-01-22 Dainippon Printing Co Ltd Cylindrical shrink label, container having cylindrical shrink label, and method for manufacturing them
JP2009107140A (en) * 2007-10-26 2009-05-21 Hirohisa Kida Ultrasonic welding structure and its method
JP5421073B2 (en) * 2009-11-10 2014-02-19 川上産業株式会社 Synthetic resin sheet sealing method, bag manufacturing method, seal processing apparatus, and bag manufacturing facility

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57195617A (en) * 1981-05-27 1982-12-01 Chukyo Kogyo Kk Ultrasonic welding method
JPS59120419A (en) * 1982-12-27 1984-07-12 Fujiyama Giken:Kk Cylindrical sealing device for thermoplastic film

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57195617A (en) * 1981-05-27 1982-12-01 Chukyo Kogyo Kk Ultrasonic welding method
JPS59120419A (en) * 1982-12-27 1984-07-12 Fujiyama Giken:Kk Cylindrical sealing device for thermoplastic film

Also Published As

Publication number Publication date
JPS59169913U (en) 1984-11-14

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