JP3406826B2 - Packaging bag - Google Patents
Packaging bagInfo
- Publication number
- JP3406826B2 JP3406826B2 JP04007998A JP4007998A JP3406826B2 JP 3406826 B2 JP3406826 B2 JP 3406826B2 JP 04007998 A JP04007998 A JP 04007998A JP 4007998 A JP4007998 A JP 4007998A JP 3406826 B2 JP3406826 B2 JP 3406826B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- packaging bag
- laminated film
- band
- sealing
- 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 - Lifetime
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
- B29C66/80—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
- B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
-
- 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
-
- 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
- B29C66/345—Progressively making the joint, e.g. starting from the middle
- B29C66/3452—Making complete joints by combining partial joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- 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
- B29C66/40—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
- 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
- B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
- B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
- B29C66/83513—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums cooperating jaws mounted on rollers, cylinders or drums and moving in a closed path
-
- 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
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/849—Packaging machines
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、液体、粘稠物
質、粉粒状物その他の被包装物を包装するに用いて好適
な包装袋に関し、とくには、自動充填機を用いて被包装
物を包装する場合の、縦方向ヒートシール部分の改善に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag suitable for packaging a liquid, a viscous substance, a powdery or granular material and other objects to be packaged, and more particularly, to an object to be packaged using an automatic filling machine. The present invention relates to improvement of the longitudinal heat-sealed portion in the case of packaging.
【０００２】[0002]
【従来の技術】たとえば、紙、延伸プラスチックフィル
ム、金属箔などからなる基材フィルム層と、そこに直接
的もしくは間接的に積層した熱融着樹脂層とを具える積
層フィルムを用い、自動充填機の作用下で被包装物を包
装するに当たっては、図４に例示するように、巻取りロ
ール１０１から繰り出されたその積層フィルム１０３
を、それぞれのガイドロール１０５，１０７に順次に通
過させた後、折畳み装置１０９をもって幅方向に二つ折
りにし、次いで、二つ折り状態のその積層フィルム１０
３を、フィルム引出しロールを兼ねる縦シールロール１
１１および横シールロール１１３に順次に通過させるこ
とが従来から広く一般に行われており、ここで、縦シー
ルロール１１１では、二本で一対をなす回転ロール１１
１ａのそれぞれに設けたフランジ状のヒートシール刃１
１１ｂによって積層フィルム１０３の遊端部分を挟み込
み、そこに図で斜線を施して示すような縦方向のヒート
シールを施し、また、横シールロール１１３では、二本
一対の回転ロール１１３ａに、それらの長さ方向に延在
させて形成されてロール１１３ａの周方向に所定の間隔
をおくヒートシール刃１１３ｂにより、これもまた図に
斜線を施して示すように、積層フィルム１０３の長さ方
向に所定の間隔をおく、横方向のヒートシールを施すこ
ととしている。2. Description of the Related Art For example, a laminated film having a base film layer made of paper, a stretched plastic film, a metal foil, etc., and a heat-sealing resin layer laminated directly or indirectly thereon is used for automatic filling. When wrapping an object to be packaged under the action of the machine, as shown in FIG. 4, the laminated film 103 fed from the winding roll 101 is used.
Are sequentially passed through the respective guide rolls 105 and 107, then folded in two in the width direction by the folding device 109, and then the laminated film 10 in the two-fold state.
3 is a vertical seal roll that doubles as a film drawing roll.
11 and the horizontal seal roll 113 have been widely and generally passed in the past. Here, in the vertical seal roll 111, two rotary rolls 11 forming a pair are used.
Flange-shaped heat-sealing blade 1 provided on each of 1a
The free end portion of the laminated film 103 is sandwiched by 11b, and heat sealing is performed in the vertical direction as shown by hatching in the figure. In the horizontal seal roll 113, the pair of rotary rolls 113a are paired with those. By the heat-sealing blades 113b which are formed to extend in the lengthwise direction and which are arranged at predetermined intervals in the circumferential direction of the roll 113a, the heat-sealing blades 113b are also provided in the lengthwise direction of the laminated film 103 as shown by hatching in the drawing. The heat seal is applied in the lateral direction with the space between.
【０００３】ここで、このようにして縦方向および横方
向のそれぞれのヒートシールを施されて包装袋とされる
積層フィルム１０３での、たとえば液体の包装は、充填
手段としてのノズル１１５によって、縦シール終了後の
積層フィルム１０３の内側へ液体を供給することにより
行われ、そして、このような液体包装の終了後における
包装袋は、横シールロール１１３の下方に配置したカッ
ターロール１１７によって、横シール部の中間部から、
たとえば一袋づつ切断される。Here, for example, liquid packaging in the laminated film 103 which is thus heat-sealed in the vertical direction and in the horizontal direction to form a packaging bag is performed by a nozzle 115 as a filling means. The liquid is supplied to the inside of the laminated film 103 after the sealing is completed, and the packaging bag after the completion of the liquid packaging is horizontally sealed by the cutter roll 117 arranged below the lateral sealing roll 113. From the middle of the section,
For example, one bag is cut.
【０００４】ところで、このような自動充填機をもって
包装袋を製造するに当たっては、積層フィルム１０３の
引出しロールとしても機能する縦シールロール１１１、
なかでもフランジ状ヒートシール刃１１１ｂにより、折
り畳み積層フィルム１０３の遊端部分を、そのフィルム
１０３と縦シールロール１１１との間にスリップが生じ
ない程度に強く挟持することが必要であり、これがため
従来は、対をなすヒートシール刃１１１ｂのそれぞれ
に、ローレット加工部の如くの凹凸部を設け、それらの
凹凸部を、積層フィルム１０３の前記遊端部分を介して
相互に噛み合わせることで、それらの間でのスリップの
発生を防止することとしている。By the way, in manufacturing a packaging bag using such an automatic filling machine, a vertical seal roll 111, which also functions as a pull-out roll for the laminated film 103,
Above all, it is necessary to strongly clamp the free end portion of the folded laminated film 103 between the film 103 and the vertical seal roll 111 by the flange-shaped heat seal blade 111b so that slip does not occur. Is provided with a concavo-convex portion such as a knurled portion on each of the pair of heat-sealing blades 111b, and these concavo-convex portions are meshed with each other through the free end portion of the laminated film 103, thereby It is intended to prevent the occurrence of slip between them.
【０００５】従って、このようにして製造される包装袋
の、縦方向のヒートシール部分は、図５に例示するよう
に、ヒートシール刃１１１ｂの凹凸部に挟まれて、主に
は、積層フィルム３の引出しに寄与する凹凸シール部１
１９と、この凹凸シール部１１９より包装袋の内側に位
置して、被包装物収容スペース１２１を区画するととも
に、熱融着樹脂の介在下で、主には、破袋強度の発現に
寄与する帯状融着部１２３とを有することになる。Therefore, the longitudinal heat-sealing portion of the packaging bag manufactured as described above is sandwiched between the uneven portions of the heat-sealing blade 111b as shown in FIG. Concavo-convex seal part 1 that contributes to drawing out 3
19 and the concave-convex seal portion 119, which is located inside the packaging bag to define a space 121 for accommodating an article to be packaged, and mainly contributes to the development of bag breaking strength under the presence of the heat-sealing resin. The strip-shaped fused portion 123 is included.
【０００６】[0006]
【発明が解決しようとする課題】ところで、このような
縦方向ヒートシール部分の形成に用いられる一対のフラ
ンジ状ヒートシール刃１１１ｂは、図６に拡大断面図で
示すように、相互の噛み合いを可能とするそれぞれの凹
凸部１１１ｃと、この凹凸部１１１ｃに隣接して位置す
る平坦部１１１ｄとを有しており、ここで、この平坦部
１１１ｄの直径Ｄは、各凹凸部１１１ｃの凸部直径Ｄ0
よりも必然的に小さくなることから、両ヒートシール刃
１１１ｂを、相互の同期下で回転させて、両ヒートシー
ル刃間に挟持した積層フィルム１０３を、それぞれ凸部
先端の周速に応じた速度で引き出した場合には、帯状融
着部１２３の形成に寄与する平坦部１１１ｄの周速が、
フィルム引出し速度に比べて小さくなり、この結果とし
て、その帯状融着部１２３の表裏両面に、平坦部１１１
ｄの周面に対する引き摺り痕が発生し、甚だしくは、そ
の引き摺りに起因するしわが発生して包装袋の外観が大
きく損なわれる他、発生するしわにより完全なシール状
態をもたらすことができず、たとえば被包装物としての
液体が、しわが発生した帯状融着部１２３を経て外部に
漏れ出すという問題があった。By the way, a pair of flange-shaped heat-sealing blades 111b used for forming such a longitudinal heat-sealing portion are capable of meshing with each other, as shown in the enlarged sectional view of FIG. And the flat portion 111d positioned adjacent to the uneven portion 111c, the diameter D of the flat portion 111d is the convex portion diameter D of each uneven portion 111c. 0
Inevitably, the heat-sealing blades 111b are rotated in synchronization with each other, and the laminated film 103 sandwiched between the heat-sealing blades is rotated at a speed corresponding to the peripheral speed of the tip of the convex portion. When pulled out by, the peripheral speed of the flat portion 111d that contributes to the formation of the band-shaped fused portion 123 is
It becomes smaller than the film drawing speed, and as a result, the flat portion 111 is formed on both front and back surfaces of the band-shaped fused portion 123.
A drag mark is generated on the peripheral surface of d, and seriously, a wrinkle is generated due to the drag, which greatly impairs the appearance of the packaging bag, and the wrinkle that occurs does not bring about a perfect sealed state. There is a problem that the liquid as the article to be packaged leaks to the outside through the band-shaped fusion-bonded portion 123 in which the wrinkles are generated.
【０００７】ところで、帯状融着部１２３への引き摺り
痕の発生は、アルミニウムその他の金属箔、紙等を基材
フィルム層として用いた場合にとくに重大であり、しわ
の発生は、伸び率の低いフィルム等を基材フィルムとす
る、厚みの薄い積層フィルムにおいてとくに重大であっ
た。By the way, the generation of drag marks on the band-shaped fused portion 123 is particularly serious when aluminum or other metal foil, paper or the like is used as the base film layer, and the generation of wrinkles has a low elongation rate. This was especially important in thin laminated films using films as base films.
【０００８】この発明は、従来技術が抱えるこのような
問題点を解決することを課題として検討した結果なされ
たものであり、それの目的とするところは、帯状融着部
への引き摺り痕、しわ等の発生を十分に防止できる包装
袋を提供するにある。The present invention has been made as a result of investigations aimed at solving such problems of the prior art. The purpose of the present invention is to provide traces of wrinkles and wrinkles on the band-shaped fused portion. The purpose of the present invention is to provide a packaging bag that can sufficiently prevent such occurrence.
【０００９】[0009]
【課題を解決するための手段】この発明の包装袋は、基
材フィルム層と、それに直接的もしくは間接的に積層し
た熱融着樹脂層とを具える積層フィルムに、縦方向およ
び横方向のそれぞれのヒートシールを施して被包装物の
収容スペースを区画したものであり、縦方向のヒートシ
ール部分で、被包装物収容スペースに隣接する領域を、
表裏両側の基材フィルム層が熱融着樹脂の介在下で融着
する帯状融着部とする一方、その帯状融着部から包装袋
の辺縁もしくはその近傍部分までを凹凸シール部とした
ところにおいて、前記帯状融着部に、凹凸シール部の凹
凸と同方向に突出して、表裏の積層フィルム部分で相互
に入り込んで、積層フィルムの長さ方向に連続する複数
の凹凸条を設けたものである。The packaging bag of the present invention comprises a laminated film comprising a base film layer and a heat-fusible resin layer laminated directly or indirectly thereon, and Each heat seal is applied to partition the accommodation space of the packaged object, and the area adjacent to the accommodation space of the packaged object is defined by the heat seal portion in the vertical direction.
Whereas the base film layers on both front and back sides are band-shaped fused parts that are fused under the interposition of a heat-fusible resin, where the band-shaped fused parts are the uneven sealing part from the edge of the packaging bag or the vicinity thereof in, the band fused portion, concave uneven seal portion
Project in the same direction as the protrusions, and
A plurality of concavo-convex stripes that enter and are continuous in the length direction of the laminated film are provided.
【００１０】この包装袋では、縦方向ヒートシール部分
の凹凸シール部は従来技術で述べたとほぼ同様にして形
成され、また、帯状融着部の凹凸条は、たとえば、従来
技術で述べた一対のヒートシール刃１１１ｂの平坦部１
１１ｄに、相互に嵌まり合う円環状の溝部および突部を
設けることによって形成することができ、これによれ
ば、それぞれのヒートシール刃の上記円環状突部の直径
が、前記平坦部１１１ｄの直径より自ずと大きくなり、
従って、その円環状突部の周速もまた速くなるので、積
層フィルムが、ヒートシール刃の、上述したような凹凸
部をもって引き出されても、帯状融着部、ひいては、そ
の凹凸条のヒートシール刃に対するスリップ量を従来技
術に比して有効に低減させることができ、これにより、
帯状融着部への引き摺り痕、しわ等の発生のおそれを効
果的に除去することができる。In this packaging bag, the concavo-convex seal portion of the longitudinal heat-sealing portion is formed in substantially the same manner as described in the prior art, and the concavo-convex stripes of the band-shaped fusion portion are, for example, a pair of those described in the prior art. Flat part 1 of heat seal blade 111b
11d can be formed by providing an annular groove portion and a protruding portion that are fitted to each other, whereby the diameter of the annular protruding portion of each heat-sealing blade is equal to that of the flat portion 111d. Naturally larger than the diameter,
Therefore, since the peripheral speed of the annular protrusion also becomes faster, even if the laminated film is pulled out by the uneven portion of the heat-sealing blade as described above, the band-shaped fusion-bonded portion, and by extension, the heat-sealing of the uneven strip. The amount of slip on the blade can be effectively reduced compared to the prior art, and as a result,
It is possible to effectively eliminate the possibility that drag marks, wrinkles, or the like may be generated on the band-shaped fused portion.
【００１１】[0011]
【発明の実施の形態】以下にこの発明の実施の形態につ
いて説明する。図１は、この発明の実施形態を示す平面
図であり、ここにおける包装袋１は、幅方向に二つ折り
した積層フィルム２の遊端部分に縦方向のヒートシール
を施してなる縦シール部分３と、積層フィルム２の長さ
方向に間隔をおいた二個所で、それの横方向にヒートシ
ールを施してなるそれぞれの横シール部分４とで被包装
物の収容スペース５を区画したものである。なお図中横
シール部分４の幅方向の中間部に位置する仮想線は、自
動充填機によって製造される、帯状に連続した包装袋の
一袋ずつの切断分離予定線を示す。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is a plan view showing an embodiment of the present invention, in which a packaging bag 1 has a vertical seal portion 3 in which a free end portion of a laminated film 2 folded in the width direction is heat-sealed in the vertical direction. And a storage space 5 for the article to be packaged is defined by two lateral seal portions 4 formed by heat sealing in the lateral direction of the laminated film 2 at two locations spaced from each other in the longitudinal direction. . In addition, the imaginary line located in the widthwise middle part of the horizontal seal portion 4 in the figure indicates the planned cutting and separating line of each continuous packaging bag in a belt shape, which is manufactured by an automatic filling machine.
【００１２】ここでは、このような包装袋１の縦シール
部分３において、収容スペース５に隣接する領域を、表
裏両側の基材フィルム層が熱融着樹脂の介在下で融着す
る帯状融着部６とし、この帯状融着部６から、包装袋１
の辺縁もしくはその近傍部分、図では近傍部分までの領
域を、基材フィルム層に屈曲歪が残留する凹凸シール部
７とするとともにその帯状融着部６に、積層フィルム２
の長さ方向に連続して延びる複数本の凹凸条８を設け
る。Here, in the vertical seal portion 3 of the packaging bag 1 as described above, a band-like fusion in which the base film layers on both sides of the front and back are fused in a region adjacent to the accommodation space 5 under the interposition of the heat fusion resin. The part 6 is formed, and the wrapping bag 1 is formed from the band-shaped fused part 6.
The peripheral edge or the vicinity thereof, or the area up to the vicinity thereof in the figure is used as the concave-convex seal portion 7 in which bending strain remains in the base film layer, and the laminated film 2 is attached to the band-shaped fusion portion 6.
A plurality of concavo-convex strips 8 extending continuously in the length direction of the are provided.
【００１３】図２はこのような縦シール部分３の形成態
様を示す拡大断面図であり、図中１１は、縦シールロー
ルに、従来技術で述べたと同様にして設けた一対のフラ
ンジ状ヒートシール刃を示す。ここにおけるこれらのヒ
ートシール刃１１は、縦シール部３の凹凸シール部７を
形成する、たとえばほぼ角錐状をなして相互に噛み合う
それぞれの凹凸部１２を有するとともに、帯状融着部
６、ひいてはその凹凸条８を形成すべく機能する、相互
に嵌まり合う円環状の溝部及び突部よりなる凹凸条部１
３を有する。FIG. 2 is an enlarged cross-sectional view showing a mode of forming such a vertical seal portion 3. Reference numeral 11 in the figure is a pair of flange-shaped heat seals provided on a vertical seal roll in the same manner as described in the prior art. Indicates a blade. These heat-sealing blades 11 here have the concavo-convex portions 12 that form the concavo-convex sealing portion 7 of the vertical sealing portion 3, for example, substantially pyramid-shaped and mesh with each other, and the band-shaped fusion-bonded portion 6 and thus the fusion-bonded portion 6. Concavo-convex ridge portion 1 including mutually engaging annular groove portions and protrusions, which function to form the concavo-convex ribs 8.
Have three.
【００１４】ここで、図示の凹凸条部１３は、一方のヒ
ートシール刃１１では、円弧状の溝部１３ａを軸線方向
に相互に隣接させて配置した断面形状を有し、また他方
のヒートシール刃１１では、上記溝部１３ａに嵌まり合
う三角山形状の突部１３ｂを軸線方向に相互に隣接させ
て配置した断面形状を有する。凹凸条部１３をこのよう
に構成した場合には、一方の円弧条溝部１３ａと、他方
の三角山形状突部１３ｂとのそれぞれの底部と頂部との
両側域に比較的大きな空間を確保することができ、これ
により、ヒートシール刃１１にて溶融された熱融着樹脂
をその空間内に多量に保持することができるので、包装
袋１の、帯状融着部６におけるヒートシール強度を十分
に高めることができ、併せて、両ヒートシール刃１１に
よる、積層フィルム押圧力に起因して、熱融着樹脂が、
被包装物の収容スペース５側へ多量に押し出されるのを
有効に阻止することができる。Here, in the illustrated uneven rib portion 13, the heat seal blade 11 on one side has a cross-sectional shape in which arcuate groove portions 13a are arranged adjacent to each other in the axial direction, and the heat seal blade on the other side. 11 has a sectional shape in which triangular mountain-shaped protrusions 13b that fit in the groove 13a are arranged adjacent to each other in the axial direction. When the uneven strip portion 13 is configured in this way, a relatively large space should be secured in both sides of the bottom portion and the top portion of the arc-shaped groove portion 13a on one side and the triangular mountain-shaped protruding portion 13b on the other side. As a result, a large amount of the heat-sealing resin melted by the heat-sealing blade 11 can be retained in the space, so that the heat-sealing strength of the band-shaped heat-sealing portion 6 of the packaging bag 1 can be sufficiently increased. In addition, due to the pressing force of the laminated film by the both heat seal blades 11, the heat fusion resin is
It is possible to effectively prevent a large amount of the article to be packaged from being pushed toward the accommodation space 5 side.
【００１５】また、ここにおいてより好ましくは、円弧
状溝部１３ａをもって構成される凹凸条部１３および、
三角山形状突部１３ｂをもって構成される凹凸条部１３
のそれぞれの、山部直径および谷部直径のそれぞれを、
前記凹凸部１２におけるそれらと等しくして、ヒートシ
ール刃１１の回転に際する周速をもまた実質的に等しく
する。ところで、凹凸条部１３の溝部および突部の断面
形状は所要に応じて適宜に変更することができ、たとえ
ば、図３に示すようなそれぞれの形状とすることもでき
る。Further, more preferably, the concave-convex strip portion 13 having the arcuate groove portion 13a, and
Concavo-convex strip portion 13 including triangular protrusions 13b
Of each of the peak diameter and the valley diameter,
By making them equal to those in the concave-convex portion 12, the peripheral speeds during rotation of the heat seal blade 11 are also made substantially equal. By the way, the cross-sectional shapes of the groove and the protrusion of the uneven strip portion 13 can be appropriately changed as required, and can be, for example, respective shapes as shown in FIG.
【００１６】さらに、図２に示すヒートシール刃１１
は、帯状融着部６の形成部分に、被包装物収容スペース
５に隣接して位置する平坦シール部１４を形成するため
の若干の平滑部１５をも有しているも、好ましくは、か
かる平滑部１５による積層フィルム２の押圧力を十分小
さく設定することで、平坦シール部１４の表面に発生す
ることのある、従来技術で述べたような引き摺り痕を、
無視できる程度にまで低減させることができる。なおこ
こで、引き摺り痕の発生をより有効に除去するために
は、図示の平滑部１５をもまた凹凸条部とすることがで
きる。Further, the heat seal blade 11 shown in FIG.
Also has a slight smooth part 15 for forming a flat seal part 14 located adjacent to the article-to-be-packaged accommodation space 5 in the part where the band-shaped fusion-bonded part 6 is formed, but, preferably, By setting the pressing force of the laminated film 2 by the smooth portion 15 to be sufficiently small, the drag marks as described in the related art, which may occur on the surface of the flat seal portion 14,
It can be reduced to a negligible level. Here, in order to more effectively remove the generation of the drag mark, the illustrated smooth portion 15 may also be an uneven strip portion.
【００１７】以上のように構成してなるヒートシール刃
１１により積層フィルム２に縦シール部分３を形成した
場合には、その積層フィルム２の引出しに寄与する凹凸
部１２によって凹凸シール部７が、そして、凹凸条部１
３によって、帯状融着部６における凹凸条８がそれぞれ
形成されることになり、かかる縦シール部分３の形成に
当たっては、凹凸条部１３のそれぞれの山部の周速が、
凹凸部１２の山部の周速、ひいては、積層フィルム２の
引出し速度と等速、もしくはそれに近接した速度となる
ので、凹凸条部１３にて挟持される積層フィルム部分の
送り出し速度の、フィルム引出し速度に対する遅れを有
効に取り除いて、帯状融着部６、なかでも凹凸条８への
引き摺り痕の発生、しわの発生等を積層フィルム２の構
成材料および厚みのいかんにかかわらず、十分に防止す
ることができる。When the vertical sealing portion 3 is formed on the laminated film 2 by the heat-sealing blade 11 having the above-described structure, the uneven sealing portion 7 is formed by the uneven portion 12 that contributes to pulling out the laminated film 2. And the uneven strip portion 1
By means of 3, the uneven strips 8 in the band-shaped fused portion 6 are respectively formed, and in forming the vertical seal portion 3, the peripheral speed of each mountain portion of the uneven strip portions 13 is
Since the peripheral speed of the mountain portion of the uneven portion 12 and, by extension, the speed at which the laminated film 2 is drawn out is equal to or close to the drawing speed, the film drawing out of the speed of sending out the laminated film portion sandwiched by the uneven portion 13 is performed. By effectively removing the delay with respect to the speed, it is possible to sufficiently prevent the generation of dragging marks, wrinkles, etc. on the band-shaped fusion-bonded portion 6, especially the uneven strips 8 regardless of the constituent material and thickness of the laminated film 2. be able to.
【００１８】[0018]
【発明の効果】以上に述べたところから明らかなよう
に、この発明によれば、とくには、積層フィルムの縦方
向のヒートシール部分で、帯状融着部に、積層フィルム
の長さ方向に連続して延びる凹凸条を設けることによ
り、積層フィルムの、その凹凸条の形成部分の移動速度
を、凹凸シール部のそれに有利に近づけることができ、
これがため、上記凹凸条、ひいては、帯状融着部の、ヒ
ートシール刃に対する引き摺りに起因する、その帯状融
着部への引き摺り痕の発生およびしわの発生等を十分に
防止することができる。As is apparent from the above description, according to the present invention, in particular, in the heat-sealing portion in the longitudinal direction of the laminated film, the band-shaped fused portion is continuously formed in the longitudinal direction of the laminated film. By providing the uneven strip extending in the same manner, the moving speed of the portion of the laminated film where the uneven strip is formed can be brought close to that of the uneven seal portion, which is advantageous.
For this reason, it is possible to sufficiently prevent the generation of dragging marks, wrinkles, and the like on the band-shaped fusion-bonded portions, which are caused by the dragging of the uneven strips and, by extension, the band-shaped fusion-bonded portions with respect to the heat-sealing blade.
【図１】この発明の実施形態を示す平面図である。FIG. 1 is a plan view showing an embodiment of the present invention.
【図２】縦シール部分の形成態様を、ヒートシール刃と
ともに示す拡大断面図である。FIG. 2 is an enlarged cross-sectional view showing a formation mode of a vertical seal portion together with a heat seal blade.
【図３】凹凸条部の他の態様を示す断面図である。FIG. 3 is a cross-sectional view showing another aspect of the uneven strip portion.
【図４】自動充填機による製袋工程を示す要部側面図で
ある。FIG. 4 is a side view of essential parts showing a bag making process by an automatic filling machine.
【図５】図４に示すところに従って製袋された包装袋を
示す平面図である。5 is a plan view showing a packaging bag manufactured according to the place shown in FIG. 4. FIG.
【図６】従来の包装袋の縦シール部分の形成態様を、ヒ
ートシール刃とともに示す拡大断面図である。FIG. 6 is an enlarged cross-sectional view showing a mode of forming a vertical seal portion of a conventional packaging bag together with a heat seal blade.
１ 包装袋 ２ 積層フィルム ３ 縦シール部分 ４ 横シール部分 ５ 収容スペース ６ 帯状融着部 ７ 凹凸シール部 ８ 凹凸条 １１ ヒートシール刃 １２ 凹凸部 １３ 凹凸条部 １３ａ 溝部 １３ｂ 突部 １４ 平坦シール部 １５ 平滑部 1 packaging bag 2 laminated film 3 Vertical seal part 4 Horizontal seal part 5 accommodation space 6 Band fusion part 7 Concavo-convex seal part 8 uneven lines 11 Heat seal blade 12 uneven part 13 Uneven strip 13a groove 13b protrusion 14 Flat seal part 15 Smooth section
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平８−230833（ＪＰ，Ａ) 特開 平６−155635（ＪＰ，Ａ) 特開 平３−43360（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B65D 33/22 B31B 1/64 B65B 51/10 ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-8-230833 (JP, A) JP-A-6-155635 (JP, A) JP-A-3-43360 (JP, A) (58) Field (Int.Cl. 7 , DB name) B65D 33/22 B31B 1/64 B65B 51/10
Claims (2)
る積層フィルムに、縦方向および横方向のそれぞれのヒ
ートシールを施して被包装物の収容スペースを区画して
なる包装袋であり、 縦方向のヒートシール部分で、被包装物収容スペースに
隣接する領域を、表裏両側の基材フィルム層が熱融着樹
脂の介在下で融着する帯状融着部とする一方、この帯状
融着部から包装袋の辺縁もしくはその近傍部分までを凹
凸シール部としたところにおいて、 前記帯状融着部に、凹凸シール部の凹凸と同方向に突出
して、表裏の積層フィルム部分で相互に入り込んで、積
層フィルムの長さ方向に連続する凹凸条を設けたことを
特徴とする包装袋。1. A packaging bag comprising a laminated film comprising a base film layer and a heat-sealing resin layer, which is heat-sealed in the longitudinal direction and the transverse direction to define a storage space for a packaged object. Yes, in the heat seal part in the vertical direction, the area adjacent to the package accommodation space is used as a band-shaped fusion part where the base film layers on both front and back sides are fused under the interposition of the heat-fusion resin, In the place where the sealing portion extends from the fusion portion to the edge of the packaging bag or a portion in the vicinity thereof, the band-shaped fusion portion projects in the same direction as the irregularities of the uneven sealing portion.
Then , the packaging bag is characterized in that it is provided with a concavo-convex strip that penetrates into each other at the front and back laminated film portions and is continuous in the length direction of the laminated film.
び谷部の高さを、凹凸シール部の凹凸の山部および谷部
の高さと等しくしてなる請求項１に記載の包装袋。2. The height of the ridges and valleys of the ridges and valleys provided in the band-shaped fusion-bonded portion is made equal to the height of the ridges and valleys of the ridges and valleys of the ridge-and-groove seal portion. Packaging bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04007998A JP3406826B2 (en) | 1998-02-23 | 1998-02-23 | Packaging bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04007998A JP3406826B2 (en) | 1998-02-23 | 1998-02-23 | Packaging bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11236060A JPH11236060A (en) | 1999-08-31 |
| JP3406826B2 true JP3406826B2 (en) | 2003-05-19 |
Family
ID=12570914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04007998A Expired - Lifetime JP3406826B2 (en) | 1998-02-23 | 1998-02-23 | Packaging bag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3406826B2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3678342B2 (en) * | 2000-05-31 | 2005-08-03 | 小林記録紙株式会社 | bag |
| JP3926166B2 (en) * | 2002-02-13 | 2007-06-06 | 東洋自動機株式会社 | Packaging bag sealing method and filled and sealed packaging bag |
| KR100465860B1 (en) * | 2002-09-09 | 2005-01-13 | 윤봉준 | A Packing Machine of Liquid phase Food |
| JP2008254747A (en) * | 2007-04-02 | 2008-10-23 | Dainippon Printing Co Ltd | Pouch |
| KR200457702Y1 (en) | 2009-12-15 | 2011-12-30 | 주춘철 | Join apparatus of vinyl packing envelope |
| JP5660297B2 (en) * | 2010-09-06 | 2015-01-28 | 東洋製罐株式会社 | Presser block and sealing device using the presser block |
| JP6050997B2 (en) * | 2012-09-26 | 2016-12-21 | 大森機械工業株式会社 | Center seal device and pillow packaging machine |
| JP6089574B2 (en) * | 2012-10-18 | 2017-03-08 | 東洋製罐株式会社 | Packaging pouch with nozzle and method for producing the same |
| JP6110196B2 (en) * | 2013-04-22 | 2017-04-05 | 株式会社鈴木精機製作所 | Heat sealer for packaging machine |
| JP6199108B2 (en) * | 2013-07-23 | 2017-09-20 | 三光機械株式会社 | Packaging machine |
| CN104960241B (en) * | 2015-07-01 | 2018-02-23 | 厦门金德威包装有限公司 | The forming method and positioner of combined package bag |
| JP6807655B2 (en) * | 2016-04-13 | 2021-01-06 | 大成ラミック株式会社 | Packaging bag, pair of rotating bodies and manufacturing equipment |
| KR101940415B1 (en) * | 2017-09-13 | 2019-01-18 | 박권식 | Vinyl package case having reinforcement band |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0343360A (en) * | 1989-07-11 | 1991-02-25 | Taisei Ramitsuku Kk | Wrapping bag, manufacture and heat seal roll thereof |
| JP3329860B2 (en) * | 1992-11-19 | 2002-09-30 | 大成ラミック株式会社 | Heat seal roll |
| JP2739640B2 (en) * | 1995-12-13 | 1998-04-15 | 株式会社小松製作所 | Continuous production method of hermetically sealed package formed of laminate film |
-
1998
- 1998-02-23 JP JP04007998A patent/JP3406826B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11236060A (en) | 1999-08-31 |
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| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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