JPH0274323A - Preparation of tubular film - Google Patents

Preparation of tubular film

Info

Publication number
JPH0274323A
JPH0274323A JP63227931A JP22793188A JPH0274323A JP H0274323 A JPH0274323 A JP H0274323A JP 63227931 A JP63227931 A JP 63227931A JP 22793188 A JP22793188 A JP 22793188A JP H0274323 A JPH0274323 A JP H0274323A
Authority
JP
Japan
Prior art keywords
films
film
opposite edges
fusion
bonded
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
JP63227931A
Other languages
Japanese (ja)
Inventor
Katsuoki Hironaga
広永　克興
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.)
Toppan Inc
Original Assignee
Toppan Printing 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 Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP63227931A priority Critical patent/JPH0274323A/en
Publication of JPH0274323A publication Critical patent/JPH0274323A/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
    • 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
    • B29C65/04—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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing 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
    • 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
    • B29C66/01—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
    • B29C66/70—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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To prevent the slippage of films on the occasion when they are rounded in the shape of a tube and the opposite edge parts thereof are fusion-bonded by high frequency induction heating, by laminating two films firmly by bonding in the central parts thereof while laminating them by a bonding agent in the opposite edge parts so that they can be fusion-bonded therein to each other. CONSTITUTION:As for films, PVDC or any other arbitrary one may be used. As for a bonding agent, any bonding agent for dry laminate put on the market may be used, and it is applied little at the opposite edges and much in the central part. For instance, it is applied in the shape of dots whose application area is small at the opposite edges A and large in the central part B. The amount of application thereof at the opposite edges A is 0.5g/m<2> or below, or preferably 0.3g/m<2> or below, and the amount of application thereof in the central part B is desirably 0.55g/m<2> or above. The films can be stuck on each other by an ordinary method. A laminate film thus obtained is rounded in the shape of a tube, and the opposite edges A are superposed on each other and fusion-bonded by a high-frequency electric field between electrodes. On the occasion, four films at the opposite edges of the films 11 and 12 are integrated by fusion-bonding and therefore no slippage takes placed.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は筒状フィルムの製造方法に関し、例えば、ハム
、ソーセージ等を充填して両端の開口部を結紮包装する
技術に用いる筒状フィルムの製造方法に関する。Detailed Description of the Invention <Industrial Field of Application> The present invention relates to a method for manufacturing a cylindrical film, for example, a method for manufacturing a cylindrical film used in a technique of filling ham, sausage, etc. and ligating the openings at both ends. Regarding the manufacturing method.

〈従来技術〉 このようなフィルムは、内容物を酸化から保護するため
、ポリ塩化ビニリデンフィルム（ＰＶＤＣ）が用いられ
ており、印刷インキが内容物や外気に触れるのを防ぐた
め、印刷インキをはさんで２枚のｐｖｏｃを接着剤で貼
り合わせた積層フィルムが用いられている。<Prior art> Polyvinylidene chloride film (PVDC) is used in such films to protect the contents from oxidation, and to prevent the printing ink from coming into contact with the contents or the outside air. A laminated film is used, which is made by sandwiching two sheets of PVO and bonding them together with an adhesive.

この積層フィルムは、例えば特公昭５７−２５８６号記
載の方法で筒状に形成される。すなわち、筒状に丸めて
、重ね合わせた両側縁同士をウエルダー加工して筒状フ
ィルムを得る。ウェルダー加工は通常、２枚の電極間で
高周波電界をかけて加熱する誘電加熱による。This laminated film is formed into a cylindrical shape, for example, by the method described in Japanese Patent Publication No. 57-2586. That is, a cylindrical film is obtained by rolling the film into a cylindrical shape and welding the overlapped edges on both sides. Welding typically involves dielectric heating in which a high-frequency electric field is applied between two electrodes.

〈発明が解決しようとする課題〉 しかるに、この高周波誘電加熱により、上記接着剤が溶
融軟化し、貼り合わせた２枚のフィルムが互にずれると
いう事故が生じがちであった。<Problems to be Solved by the Invention> However, this high-frequency dielectric heating tends to cause the adhesive to melt and soften, causing an accident in which the two films bonded together become displaced from each other.

〈課題を解決するための手段〉 この問題点を解決するため、本発明は、接着剤により２
枚のフィルムを貼り合わせて成る積層フィルムを筒状に
丸め、両側縁同士を高周波誘電加熱して融着する方法に
おいて、 フィルムの中央部分で２枚のフィルムを強固に接着積層
すると共に、 両側縁部分で、２枚のフィルムが互に融着可能に接着剤
で積層されていることを特徴とする筒状フィルムの製造
方法を提供する。<Means for Solving the Problem> In order to solve this problem, the present invention provides two
In this method, a laminated film made by pasting two films together is rolled into a cylinder shape, and both edges are fused together by high-frequency dielectric heating.In this method, the two films are firmly bonded and laminated in the center of the film, and both edges are bonded together. To provide a method for manufacturing a cylindrical film, characterized in that two films are laminated with an adhesive so as to be able to be fused to each other in some parts.

〈実施例〉 本発明に係わるフィルムは任意のもので良いが、ハムや
ソーセージの包装材として用いるためにはＰＶＤＣが好
ましい。<Example> The film according to the present invention may be any film, but PVDC is preferable for use as a packaging material for hams and sausages.

２枚のフィルムのうち、一方には印刷インキによる絵柄
が施される。One of the two films is decorated with a pattern using printing ink.

接着剤はドライラミ名−ト用の市販の接着剤で良い。The adhesive may be a commercially available adhesive for dry laminate.

接着剤は、フィルムの両側縁で少なく、中央部分で多（
塗布する。The adhesive is less on both sides of the film and more in the center (
Apply.

例えば第１図に示すように、両側縁（Ａ）で着肉面積を
少なく、中央部分（Ｂ）で多い点状に塗布する。第２図
に示すように中央部分では全面ベタでも良い、第１図、
第２図のいずれにおいても、多数の点を打ったところが
着肉部分を示している。For example, as shown in FIG. 1, the area to be inked is small on both side edges (A), and the ink is applied in dots in a large area at the center part (B). As shown in Figure 2, the center part may be completely solid; Figure 1,
In both of FIGS. 2A and 2B, the areas where many dots have been placed indicate the parts that have been filled.

両側縁（Ａ）で着肉面積を少なくするのは、後述の高周
波誘電加熱の際に、接着剤のない部分で２枚のフィルム
を互に融着するためである。塗布量が少なければ全面ベ
タに塗布しても良い、高周波誘電加熱の際に接着剤が排
除されて、フィルム同士が融着するからである。塗布量
は０．５　ｇ　／　ｎ（以下、好ましくは０．３ｇ／ｒ
ｒｒ以下である。The reason why the bonded area is reduced at both side edges (A) is to fuse the two films together in the areas where there is no adhesive during high-frequency dielectric heating, which will be described later. If the coating amount is small, it may be applied evenly over the entire surface, since the adhesive is removed during high-frequency dielectric heating and the films are fused together. The coating amount is 0.5 g/n (hereinafter preferably 0.3 g/r
rr or less.

中央部分（Ｂ）では着肉面積を大きくするのは、この部
分では融着されず、接着剤のみによってフィルム同士が
積層されているからである。塗布量は０．５５　ｇ　／
Ｍ以上が望ましい。The reason why the bonded area is increased in the central portion (B) is that the films are not fused in this portion and are laminated with only adhesive. Coating amount is 0.55 g/
M or more is desirable.

フィルムの貼り合わせは常法で可能である。すなわち、
一方のフィルムでグラビア印刷法により接着剤を塗布し
、溶剤を除去した後、他方のフィルムを重ね合わせ、数
時間〜数十時間保存して硬化させる。The films can be bonded together using a conventional method. That is,
An adhesive is applied to one film using a gravure printing method, and after removing the solvent, the other film is placed on top of the other film and stored for several hours to several tens of hours to harden.

得られた積層フィルムは第３図に示すように筒状に丸め
、両側縁（Ａ）同士を重ね、電極間で高周波電界により
融着する。ここで融着とは接着剤２を介することなく、
溶融したフィルム同士が一体化することをいう。第３図
から分かるように、重ね合わせ部分には、フィルム１１
の両側縁、フィルムが１２の両側縁の４枚のフィルムが
存在し、この４枚のフィルムが一体に融着する。高周波
は例えば、３０〜４２ｍＡ　、　５〜１００Ｍ）ｌｘの
電流によって行われる。The obtained laminated film is rolled into a cylindrical shape as shown in FIG. 3, the both side edges (A) are overlapped, and the film is fused between the electrodes by a high frequency electric field. Here, fusion means that without using adhesive 2,
This refers to the unification of melted films. As can be seen from FIG. 3, there is a film 11
There are four films on both sides of the film number 12, and these four films are fused together. The high frequency is carried out, for example, by a current of 30-42 mA, 5-100 M) lx.

〈試験例〉 印刷柄を施したｐｖｏｃフィルムと他のｐｖｏｃフィル
ムとを、ドライラミネート法により積層した１両側縁の
塗布量は０．３ｇ／イ、中央は０．６ｇ／イで、着肉形
状は第１回に示すものと同一である。<Test example> A PVOC film with a printed pattern and another PVOC film were laminated by a dry lamination method.The coating amount on both sides was 0.3 g/A, and the center was 0.6 g/A, and the ink shape was is the same as shown in Part 1.

この積層フィルムを丸め、両側縁同士を重ねて、電橋間
で高周波誘電加熱して融着した。融着部分の４枚のフィ
ルムは互に強固に融着一体止しており、フィルムのずれ
はなかった。This laminated film was rolled up, both side edges overlapped, and high-frequency dielectric heating was performed between the electric bridges to fuse them. The four films in the fused portion were firmly fused and fixed to each other, and there was no displacement of the films.

〈比較例〉 接着剤を、全面均一に０．６ｇ／ｒｄ塗布した外は試験
例を同一の方法により筒状フィルムを製造した。最内面
のフィルムがずれており、この最内面のフィルムは他の
フィルムと融着していなかった。<Comparative Example> A cylindrical film was produced in the same manner as in the test example except that the adhesive was applied uniformly over the entire surface at a rate of 0.6 g/rd. The innermost film was misaligned, and this innermost film was not fused to the other films.

く効果〉 以上のように、本発明によれば、高周波誘電加熱に際し
て重ね合わされた４枚のフィルムが強固に融着一体止す
るから、フィルムがずれるという事故が生しない。Effects> As described above, according to the present invention, the four overlapping films are firmly fused and fixed together during high-frequency dielectric heating, so that accidents such as shifting of the films do not occur.

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

図面は本発明の実施例を示し、第１図、第２図は接着剤
塗布形状を示す説明図、第３図は筒状フィルムの説明図
である。 １１．１２・・・フィルム　　　　２・−・接着剤Ａ・
・・側縁　　　　　　　　Ｂ・・・中央部　　許　　出
　　願　　人 凸版印刷株式会社 代表者　鈴木和夫 第１図 第２図 第３図The drawings show examples of the present invention, and FIGS. 1 and 2 are explanatory views showing the shape of adhesive application, and FIG. 3 is an explanatory view of a cylindrical film. 11.12... Film 2... Adhesive A.
...Side edge B...Central part Application: Toppan Printing Co., Ltd. Representative: Kazuo Suzuki Figure 1 Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] （１）接着剤により２枚のフィルムを貼り合わせて成る
積層フィルムを筒状に丸め、両側縁同士を高周波誘電加
熱して融着する方法において、 フィルムの中央部分で２枚のフィルムを強固に接着積層
すると共に、 両側縁部分で、２枚のフィルムが互に融着可能に接着剤
で積層されていることを特徴とする筒状フィルムの製造
方法。(1) In this method, a laminated film made by bonding two films together with an adhesive is rolled into a cylinder shape, and both edges are fused together by high-frequency dielectric heating.The two films are firmly bonded in the center of the film. A method for manufacturing a cylindrical film, which comprises adhesively laminating the two films and laminating the two films at both side edge portions with an adhesive so that they can be fused to each other.
JP63227931A 1988-09-12 1988-09-12 Preparation of tubular film Pending JPH0274323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63227931A JPH0274323A (en) 1988-09-12 1988-09-12 Preparation of tubular film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63227931A JPH0274323A (en) 1988-09-12 1988-09-12 Preparation of tubular film

Publications (1)

Publication Number Publication Date
JPH0274323A true JPH0274323A (en) 1990-03-14

Family

ID=16868529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63227931A Pending JPH0274323A (en) 1988-09-12 1988-09-12 Preparation of tubular film

Country Status (1)

Country Link
JP (1) JPH0274323A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008189357A (en) * 2007-02-05 2008-08-21 Kureha Corp Package, and manufacturing method for package

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008189357A (en) * 2007-02-05 2008-08-21 Kureha Corp Package, and manufacturing method for package

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