JP2015174665A - Pressure flange of filling and packaging machine - Google Patents

Pressure flange of filling and packaging machine Download PDF

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JP2015174665A
JP2015174665A JP2014050075A JP2014050075A JP2015174665A JP 2015174665 A JP2015174665 A JP 2015174665A JP 2014050075 A JP2014050075 A JP 2014050075A JP 2014050075 A JP2014050075 A JP 2014050075A JP 2015174665 A JP2015174665 A JP 2015174665A
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filling
outer peripheral
peripheral surface
pressure flange
wall portion
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JP6322449B2 (en
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弘 曽良
Hiroshi Sora
弘 曽良
康弘 盛川
Yasuhiro Morikawa
康弘 盛川
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Shikoku Kakoki Co Ltd
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Shikoku Kakoki Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Basic Packing Technique (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a pressure flange of a filling and packaging machine which can prevent droplets from splashing from the liquid surface of a content when molding a content-filled container from a tube-like packaging material.SOLUTION: A pressure flange 2 is attached to the outer periphery of a filling tube 14 so as to be positioned below the content filling level. Between an outer peripheral surface 2a of the filling tube 14 and an inner peripheral surface of a tube-like packaging material T, an annular passage S for allowing a portion of fluid pressure of a content generated when molding a container to escape upward is formed. On the outer peripheral surface 2a, a plurality of belt-like annular projections 31 and belt-like annular recesses 32 are formed.

Description

この発明は、流動性食品や飲料等の内容物を、紙等のウェブ状包材から成形された容器に充填して包装する充填包装機に関し、より詳細には、充填包装機において、容器成形時の包材の内部圧力を調整して成形を良好に行うために用いられるプレッシャフランジに関する。   The present invention relates to a filling and packaging machine for filling and packaging contents such as fluid foods and beverages into a container formed from a web-like packaging material such as paper, and more specifically, in a filling and packaging machine, The present invention relates to a pressure flange that is used for adjusting the internal pressure of the packaging material at the time and performing molding well.

たとえば流動性食品等の内容物を充填した紙成形容器を製造するための充填包装機として、図１０および図１１に示すものが一般に知られている。
この充填包装機(10)は、ロール状に巻かれたウェブ状包材(W)を支持しているリワインダ(11)と、リワインダ(11)からウェブ状包材(W)を順次巻き戻す巻戻し装置(12)と、巻き戻されたウェブ状包材(W)の両縁部どうしを重ね合わせて縦シールすることによりチューブ状包材(T)に成形するチューブ成形装置(13)と、チューブ状包材(T)内に上方から挿入された充填管(14)によってチューブ状包材(T)内に一定レベルまで内容物を充填する内容物供給装置(15)と、内容物が充填されたチューブ状包材(T)を、側方から挟圧して予備成形し、かつ容器１つ分に相当する長さ毎に横シールして横シール部の幅中間で切断することにより、中間形態である枕状の内容物充填容器(C1)を成形する容器成形装置(16)と、上記容器(C1)を完成形態である直方体状の内容物充填容器(C2)に成形する容器完成装置(17)とを備えている。
容器成形装置(16)は、チューブ状包材(T)を挟んで開閉しうるように配されてチューブ状包材(T)を横シールする２対のシールジョー(161)を備えている。シールジョー(161)は、容器(C1)１つ分の長さに相当するストロークで１対ずつ交互に昇降させられる。また、図１１に示すように、各対のシールジョー(161)には、チューブ状包材(T)をその両側から挟み付けることにより所定の容器形状（例えば横断面正方形）に予備成形する成形フラップ(162)が備えられている。 For example, what is shown in FIG. 10 and FIG. 11 is generally known as a filling and packaging machine for producing a paper container filled with contents such as fluid food.
The filling and packaging machine (10) includes a rewinder (11) that supports a web-shaped packaging material (W) wound in a roll shape, and a rewinder (11) that sequentially rewinds the web-shaped packaging material (W). A tube forming device (13) for forming a tube-shaped packaging material (T) by stacking and vertically sealing the both ends of the unwinding device (12) and the web-shaped packaging material (W); A content supply device (15) that fills the tubular packaging material (T) to a certain level by a filling tube (14) inserted from above into the tubular packaging material (T), and the content is filled The tube-shaped packaging material (T) is preliminarily molded by pinching from the side, and then sealed horizontally for each length corresponding to one container, and cut in the middle of the width of the horizontal seal part. A container forming device (16) for forming a pillow-shaped content filling container (C1) as a form, and the container (C1) into a rectangular parallelepiped content filling container (C2) as a completed form And a container finished device to form (17).
The container molding device (16) includes two pairs of sealing jaws (161) that are arranged so as to be opened and closed with the tubular packaging material (T) interposed therebetween and that laterally seal the tubular packaging material (T). The seal jaws 161 are alternately raised and lowered one by one with a stroke corresponding to the length of one container C1. Further, as shown in FIG. 11, each pair of sealing jaws (161) is preformed into a predetermined container shape (for example, a square in cross section) by sandwiching a tubular packaging material (T) from both sides thereof. A flap (162) is provided.

上記充填包装機(10)において、中間形態の枕状内容物充填容器(C1)を成形する際、内容物が充填されたチューブ状包材(T)に対して、各対のシールジョー(161)および成形フラップ(162)による加圧力が作用すると、チューブ状包材(T)の下端側は横シール部によって閉鎖されているため、内容物の一部が上方へ逃げようとする。しかしながら、内容物が上方に逃げてしまうと、チューブ状包材(T)の内部圧力が不足して成形フラップ(162)による予備成形が成形不良となったり、内容物の充填量が不足したりするおそれがある。
そのため、充填管(14)における内容物充填レベルよりも下方に位置する部分の周囲に、プレッシャフランジ(18)が取り付けられている。このプレッシャフランジ(18)により、上方へ逃げようとする内容物、換言すれば、内容物の流体圧が受け止められ、容器(C1)の成形に必要な内部圧力が確保されるようになっている。
但し、内部圧力が高くなりすぎると、チューブ状包材(T)が縦シール部の箇所で破れるおそれがあるため、プレッシャフランジ(18)の外周面(18a)は、チューブ状包材(T)の内周面との間に、内容物の流体圧の一部を上方に逃がす環状通路(S)が形成されるような略円柱面によって構成されている（例えば、下記特許文献１および２参照）。 In the filling and packaging machine (10), when forming the pillow-shaped content filling container (C1) of the intermediate form, each pair of sealing jaws (161) is applied to the tubular packaging material (T) filled with the content. ) And the molding flap (162), the lower end side of the tubular packaging material (T) is closed by the lateral seal portion, so that a part of the contents tends to escape upward. However, if the content escapes upward, the internal pressure of the tubular packaging material (T) is insufficient, and the preforming with the molding flap (162) becomes a molding failure, or the filling amount of the content is insufficient. There is a risk.
Therefore, a pressure flange (18) is attached around the portion of the filling pipe (14) located below the content filling level. The pressure flange (18) allows the contents to escape upward, in other words, the fluid pressure of the contents is received, and the internal pressure necessary for molding the container (C1) is secured. .
However, if the internal pressure becomes too high, the tubular packaging material (T) may be broken at the position of the vertical seal portion, so the outer peripheral surface (18a) of the pressure flange (18) Is formed by a substantially cylindrical surface that forms an annular passage (S) that allows a part of the fluid pressure of the contents to escape upward (see, for example, Patent Documents 1 and 2 below). ).

ここで、環状通路(S)を通じてプレッシャフランジ(18)の上方に逃げる内容物の流体圧は、かなりの高圧となる場合があり、その垂直方向の力によって内容物の液面から飛沫が跳ね上がることがあった。そして、跳ね上がった内容物の飛沫が、ウェブ状包材（W）の両縁部どうしの縦シールを行う縦シールローラまで達すると、飛沫の付着により縦シールローラが固着して回転不良が生じ、縦シール不良を招くことがあった。また、内容物の飛沫が、縦シール前のウェブ状包材（W）の両縁部のシール面に付着して、縦シール不良が生じる場合もあった。   Here, the fluid pressure of the contents escaping above the pressure flange (18) through the annular passage (S) may become a considerably high pressure, and the splash of the contents jumps up from the liquid level of the contents by the vertical force. was there. And when the splash of the splashed contents reaches the vertical seal roller that performs the vertical seal between the two edges of the web-shaped packaging material (W), the vertical seal roller adheres due to the adhesion of the splash, resulting in a rotation failure, In some cases, the vertical seal was poor. Moreover, the splash of the content may adhere to the sealing surface of the both edges of the web-like packaging material (W) before the vertical seal, resulting in a vertical seal failure.

特開平１０−１６７２０７号公報JP-A-10-167207 特開２０１０−９５３１４号公報JP 2010-95314 A

この発明の目的は、充填包装機において、チューブ状包材から内容物充填容器を成形する際に内容物の液面から飛沫が跳ね上がるのを抑制しうるプレッシャフランジを提供し、その前工程であるウェブ状包材からチューブ状包材への成形工程において、内容物の飛沫の付着による縦シール不良が起こらないようにすることにある。   An object of the present invention is to provide a pressure flange that can suppress splashing of splashing from the liquid level of the contents when forming the contents-filled container from the tubular packaging material in the filling and packaging machine, and is a pre-process thereof. In the molding process from the web-shaped packaging material to the tube-shaped packaging material, there is to prevent a vertical seal failure due to the adhesion of the splash of the contents.

この発明は、内容物を充填する充填管が上方から挿入された垂直なチューブ状包材内において内容物充填レベルよりも下方に位置するように充填管の外周に取り付けられ、その外周面とチューブ状包材の内周面との間に、チューブ状包材から内容物充填容器が成形される際に生じる内容物の流体圧の一部を上方に逃がす環状通路が形成されるように構成されている充填包装機のプレッシャフランジであって、外周面に、凸部および凹部のうち少なくともいずれか一方が形成されているものである（請求項１）。   This invention is attached to the outer periphery of the filling tube so that the filling tube for filling the content is positioned below the content filling level in the vertical tubular packaging material inserted from above, and the outer peripheral surface and the tube An annular passage is formed between the inner peripheral surface of the wrapping packaging material to release upward a part of the fluid pressure of the content generated when the content filling container is formed from the tubular wrapping material. The pressure flange of the filling and packaging machine in which at least one of a convex part and a concave part is formed on the outer peripheral surface (Claim 1).

この発明による充填包装機のプレッシャフランジによれば、環状通路を通って上方に逃げようとする内容物の流体圧、すなわち、環状通路を上向きに流れる内容物が、プレッシャフランジの外周面に形成された凸部および／または凹部によって撹乱されることで、乱流が生じる。以上のような内容物撹乱凸部や内容部撹乱凹部の作用により、環状通路を通ってプレッシャフランジの上方に逃げた内容物の流体圧は、垂直方向の力が分散されるため、それによって内容物の液面からの飛沫の跳ね上がりが抑制される。
従って、この発明のプレッシャフランジによれば、充填包装機において、チューブ状包材から内容物充填容器への成形工程が良好に行われる上、容器成形工程時に内容物の液面から飛沫が跳ね上がるのが抑制され、ひいては、その前工程であるウェブ状包材からチューブ状包材への成形工程において、内容物の飛沫の付着による縦シール不良が起こらないようにすることが可能である。 According to the pressure flange of the filling and packaging machine according to the present invention, the fluid pressure of the content to escape upward through the annular passage, that is, the content flowing upward in the annular passage is formed on the outer peripheral surface of the pressure flange. Turbulence is generated by being disturbed by the convex portions and / or concave portions. The fluid pressure of the content that escapes above the pressure flange through the annular passage by the action of the content disturbance convex portion and the content portion disturbance concave portion as described above is dispersed by the vertical force. Splashing of splashes from the liquid level of the object is suppressed.
Therefore, according to the pressure flange of the present invention, in the filling and packaging machine, the molding process from the tube-shaped packaging material to the content-filled container is performed satisfactorily, and splashes splash from the liquid level of the contents during the container molding process. As a result, it is possible to prevent the occurrence of a vertical seal failure due to adhesion of the droplets of the contents in the forming process from the web-shaped packaging material to the tube-shaped packaging material, which is the preceding process.

この発明による充填包装機のプレッシャフランジの好適な態様として、充填管の外周に嵌め付けられる内周壁部と、内周壁部と同心状に配置された外周壁部と、内周壁部および外周壁部の上端どうしを連結している上壁部とを備えており、内周壁部、外周壁部および上壁部によってプレッシャフランジの下面に開口した環状凹所が形成されており、外周壁部の上部に、環状凹所と環状通路とを連通させる貫通孔が形成されている場合がある（請求項２）。   As a preferred aspect of the pressure flange of the filling and packaging machine according to the present invention, an inner peripheral wall portion fitted to the outer periphery of the filling pipe, an outer peripheral wall portion concentrically arranged with the inner peripheral wall portion, an inner peripheral wall portion and an outer peripheral wall portion And an upper wall portion that connects the upper ends of the upper and lower ends of the pressure flange by the inner peripheral wall portion, the outer peripheral wall portion, and the upper wall portion. In some cases, a through hole is formed to communicate the annular recess with the annular passage (claim 2).

上記態様のプレッシャフランジによれば、容器成形時に上方へ逃げようとする内容物の一部が環状凹所を通って貫通孔から環状通路の上部出口付近に高圧で噴出し、この噴出流が、環状通路を通って上向きに流れる内容物とぶつかることにより、内容物の流れの垂直方向の力が分散されるため、内容物の液面からの飛沫の跳ね上がりが、より一層確実に抑制される。   According to the pressure flange of the above aspect, a part of the content to escape upward at the time of container molding is ejected at a high pressure from the through hole to the vicinity of the upper outlet of the annular passage through the annular recess. By colliding with the contents flowing upward through the annular passage, the force in the vertical direction of the contents flow is dispersed, so that splash of the contents from the liquid surface is more reliably suppressed.

この発明による充填包装機のプレッシャフランジにおいて、外周面に、凸部および凹部のうち少なくともいずれか一方が、合計で複数個形成されているのが好ましい（請求項３）。   In the pressure flange of the filling and packaging machine according to the present invention, it is preferable that at least one of a convex portion and a concave portion is formed on the outer peripheral surface in total.

プレッシャフランジの外周面に形成される凸部および／または凹部は、少なくとも１個あれば内容物を撹乱させ効果が奏されるが、これらを合計で複数個設けることにより、上記効果がより一層多く得られ、内容物の液面からの飛沫の跳ね上がりが確実に抑制される。   If there is at least one convex part and / or concave part formed on the outer peripheral surface of the pressure flange, the contents are disturbed and the effect is exerted. However, by providing a plurality of these in total, the above effect is further increased. As a result, the splash of the contents from the liquid surface is reliably suppressed.

この発明による充填包装機のプレッシャフランジの一態様として、外周面に、帯環状凸部および帯環状凹部のうち少なくとも一方が、合計で複数個形成されている場合がある（請求項４）。   As one aspect of the pressure flange of the filling and packaging machine according to the present invention, there may be a case where a plurality of at least one of the band annular convex part and the band annular concave part are formed on the outer peripheral surface in total (claim 4).

プレッシャフランジの外周面に形成される凸部や凹部を帯環状のものとすれば、環状通路に流入してくる内容物のほぼ全量を撹乱させることができる上、これらの凸部および／または凹部を合計で複数個設けることによって、内容物の撹乱による乱流形成効果が高められ、ひいては内容物の飛沫の跳ね上げを抑制する効果が高められる。
より好適な態様では、プレッシャフランジの外周面に、帯環状凸部および帯環状凹部が上下に交互に並んで複数個ずつ形成され、それによって乱流形成効果は更に高められる。
また、上記態様において、外周面に形成される複数個の帯環状凸部や帯環状凹部について、それぞれの幅および／または深さが異なるものとしてもよく、それによっても乱流形成効果は高くなると考えられる。
さらに、帯環状凸部および帯環状凹部は、プレッシャフランジの中心軸線と直交する水平状のものとする他、中心軸線に対して角度をつけた傾斜状のものとすることも可能である。
なお、プレッシャフランジの外周面に形成される凸部や凹部の形状は、上述した帯環状のものに限定されず、その他、例えば、複数個の突起状凸部、複数個のディンプル状凹部、またはこれらを組み合わせたものを外周面に形成してもよい。 If the convex portions and the concave portions formed on the outer peripheral surface of the pressure flange are formed in a ring shape, almost all of the contents flowing into the annular passage can be disturbed, and these convex portions and / or concave portions can be disturbed. By providing a plurality of a total, the effect of forming a turbulent flow due to the disturbance of the contents is enhanced, and as a result, the effect of suppressing splashing of the contents is enhanced.
In a more preferred aspect, a plurality of band annular protrusions and band annular recesses are alternately formed on the outer peripheral surface of the pressure flange, and the turbulent flow forming effect is further enhanced.
Moreover, in the said aspect, about the some band annular convex part and belt annular recessed part formed in an outer peripheral surface, each width and / or depth may be different, and if it does, the turbulent flow formation effect will become high. Conceivable.
Further, the band-shaped convex part and the band-shaped concave part may be in a horizontal shape orthogonal to the central axis of the pressure flange, or in an inclined shape with an angle with respect to the central axis.
In addition, the shape of the convex part and recessed part formed in the outer peripheral surface of a pressure flange is not limited to the belt-shaped thing mentioned above, For example, several protrusion-like convex part, several dimple-like recessed part, or A combination of these may be formed on the outer peripheral surface.

この発明による充填包装機のプレッシャフランジにおいて、外周面の最下部に、チューブ状包材の内周面との間隔が０．３〜１ｍｍとなる帯環状凸部が形成されている場合がある（請求項５）。   In the pressure flange of the filling and packaging machine according to the present invention, a band-shaped convex portion having a distance of 0.3 to 1 mm from the inner peripheral surface of the tubular packaging material may be formed at the lowermost portion of the outer peripheral surface ( Claim 5).

外周面の最下部に上記のような帯環状凸部を設けて環状通路の入口を狭くすることにより、内容物の流れが乱流となり易くなって、垂直方向の力が分散され、内容物の液面からの飛沫の跳ね上がりを抑制する効果が顕著に表れた。   By providing the above-mentioned band annular projection at the lowermost part of the outer peripheral surface and narrowing the inlet of the annular passage, the flow of the content is likely to be turbulent, the vertical force is dispersed, The effect of suppressing splash splashing from the liquid surface appeared remarkably.

また、この発明による充填包装機のプレッシャフランジにおいて、外周面の高さが２０ｍｍ以上であるのが好ましい（請求項６）。   In the pressure flange of the filling and packaging machine according to the present invention, it is preferable that the outer peripheral surface has a height of 20 mm or more.

外周面の高さが２０ｍｍ以上である場合に、内容物の液面からの飛沫の跳ね上がりを抑制する効果が顕著に表れた。   When the height of the outer peripheral surface was 20 mm or more, the effect of suppressing splash splashing from the liquid surface of the contents appeared significantly.

この発明の実施形態に係る充填包装機の一部を示す正面図である。It is a front view which shows a part of filling and packaging machine which concerns on embodiment of this invention. 同充填包装機のプレッシャフランジを示す斜視図である。It is a perspective view which shows the pressure flange of the filling packaging machine. 同プレッシャフランジの正面図である。It is a front view of the pressure flange. 同プレッシャフランジの平面図である。It is a top view of the pressure flange. 図４のV-V線に沿う断面図である。It is sectional drawing which follows the VV line of FIG. プレッシャフランジにおける外周面の凹凸部の変形例を示す正面図である。It is a front view which shows the modification of the uneven | corrugated | grooved part of the outer peripheral surface in a pressure flange. プレッシャフランジにおける外周面の凹凸部の変形例を示す正面図である。It is a front view which shows the modification of the uneven | corrugated | grooved part of the outer peripheral surface in a pressure flange. プレッシャフランジにおける外周面の凹凸部の変形例を示す正面図である。It is a front view which shows the modification of the uneven | corrugated | grooved part of the outer peripheral surface in a pressure flange. プレッシャフランジにおける外周面の凹凸部の変形例を示す正面図である。It is a front view which shows the modification of the uneven | corrugated | grooved part of the outer peripheral surface in a pressure flange. 従来の充填包装機の概略を示す斜視図である。It is a perspective view which shows the outline of the conventional filling packaging machine. 従来の充填包装機の一部を示す正面図である。It is a front view which shows a part of conventional filling packaging machine.

この発明の実施形態を、図１〜図９を参照して以下に説明する。
図１は、この発明の実施形態に係る充填包装機の一部を示したものである。なお、充填包装機の構造は、後述するプレッシャフランジを除けば、図１０および図１１を参照して先に説明した従来技術と実質的に同じであるので、ここでの詳しい説明は省略する。 An embodiment of the present invention will be described below with reference to FIGS.
FIG. 1 shows a part of a filling and packaging machine according to an embodiment of the present invention. The structure of the filling and packaging machine is substantially the same as that of the prior art described above with reference to FIGS. 10 and 11 except for the pressure flange described later, and detailed description thereof will be omitted here.

図１に示すように、充填管(14)における内容物充填レベルよりも下方に位置する部分、より具体的には、充填管(14)先端よりもやや上方部分の周囲に、プレッシャフランジ(2)が取り付けられている。   As shown in FIG. 1, a pressure flange (2) is formed around a portion of the filling pipe (14) located below the content filling level, more specifically, around a portion slightly above the tip of the filling pipe (14). ) Is attached.

図２〜図５に詳しく示すように、プレッシャフランジ(2)は、充填管(14)の外周に嵌め付けられる内周壁部(21)と、内周壁部(21)と同心状に配置された外周壁部(22)と、内周壁部(21)および外周壁部(22)の上端どうしを連結している上壁部(23)とを備えており、これらの壁部(21)(22)(23)によって、プレッシャフランジ(2)の下面(2b)に開口した環状凹所(24)が形成されている。
内周壁部(21)の下端は、外周壁部(22)の下端と比べて、やや下方に長くのびている。
また、上壁部(23)の上面には、平面より見て上壁部(23)の内外周縁と同心状の短い円弧形をした４つの上方凸部(25)が、周方向に等間隔おきに形成されている。 As shown in detail in FIGS. 2 to 5, the pressure flange (2) is disposed concentrically with the inner peripheral wall portion (21) fitted to the outer periphery of the filling pipe (14) and the inner peripheral wall portion (21). An outer peripheral wall portion (22), and an inner wall portion (21) and an upper wall portion (23) connecting the upper ends of the outer peripheral wall portion (22), and these wall portions (21) (22 ) (23) forms an annular recess (24) opened in the lower surface (2b) of the pressure flange (2).
The lower end of the inner peripheral wall portion (21) extends slightly downward compared to the lower end of the outer peripheral wall portion (22).
Further, on the upper surface of the upper wall portion (23), there are four upper convex portions (25) having a short arc shape concentric with the inner and outer peripheral edges of the upper wall portion (23) when viewed from the plane, and the like in the circumferential direction. It is formed at intervals.

プレッシャフランジ(2)の外周面(2a)、すなわち、外周壁部(22)の外周面は、チューブ状包材(T)の内周面との間に、所定寸法の環状空隙部が形成されるような外径を有する略円柱面よりなる。この環状空隙部が、充填管(14)の下方において、容器成形装置(16)のシールジョー(161)および成形フラップ(162)によって枕状内容物充填容器(C1)が成形される際に上方へ逃げようとする内容物、すなわち内容物の流体圧の一部を、プレッシャフランジ(2)の上方に逃がすための環状通路(S)を形成している。環状通路(S)の径方向の幅は、通常、０．３〜１ｍｍ程度となされる。
外周面(2a)の高さは２０ｍｍ以上であるのが好ましく、例えば７０ｍｍ程度となされる。 An annular gap of a predetermined size is formed between the outer peripheral surface (2a) of the pressure flange (2), that is, the outer peripheral surface of the outer peripheral wall (22), with the inner peripheral surface of the tubular packaging material (T). It consists of a substantially cylindrical surface having such an outer diameter. This annular gap is formed above the filling tube (14) when the pillow-shaped content filling container (C1) is formed by the sealing jaw (161) and the forming flap (162) of the container forming device (16). An annular passage (S) is formed to allow the contents to escape to the inside, that is, a part of the fluid pressure of the contents, to escape above the pressure flange (2). The radial width of the annular passage (S) is normally about 0.3 to 1 mm.
The height of the outer peripheral surface (2a) is preferably 20 mm or more, for example, about 70 mm.

プレッシャフランジ(2)の外周面(2a)には、５個の帯環状凸部(31)および４個の帯環状凹部(32)が、上下に交互に並んで形成されている。これらの帯環状凸部(31)および帯環状凹部(32)は、プレッシャフランジ(2)の中心軸線と直交する水平状のものとなされている。
外周面(2a)の最下部に形成されている帯環状凸部(31)は、チューブ状包材(T)の内周面との間隔が０．３〜１ｍｍとなるようなものであるのが好ましく、上記間隔は例えば０．５ｍｍ程度となされる。また、残りの４個の帯環状凸部(31)とチューブ状包材(T)の内周面との間隔は、例えば１．５ｍｍ程度となされる。最下部以外の４個の帯環状凸部(31)はいずれも同じ幅であって７ｍｍ程度であるのに対して、最下部の帯環状凸部(31)の幅は例えば９ｍｍ程度とやや広くなっている。
４個の帯環状凹部(32)は、同形同大であって、例えば幅８ｍｍ程度、深さ２ｍｍ程度である。各帯環状凹部(32)の上下側面は、開口縁に向かって次第に広がるテーパ状となされている。 On the outer peripheral surface (2a) of the pressure flange (2), five belt annular protrusions (31) and four belt annular recesses (32) are formed alternately in the vertical direction. These band-shaped convex part (31) and band-shaped concave part (32) are horizontal and orthogonal to the central axis of the pressure flange (2).
The band annular convex part (31) formed at the lowermost part of the outer peripheral surface (2a) is such that the distance from the inner peripheral surface of the tubular packaging material (T) is 0.3 to 1 mm. The interval is preferably about 0.5 mm. Further, the distance between the remaining four belt-shaped convex portions (31) and the inner peripheral surface of the tubular packaging material (T) is, for example, about 1.5 mm. The four band annular protrusions (31) other than the lowermost part have the same width of about 7 mm, whereas the width of the lowermost band annular protrusion (31) is a little wider, for example, about 9 mm. It has become.
The four belt annular recesses (32) have the same shape and the same size, for example, a width of about 8 mm and a depth of about 2 mm. The upper and lower side surfaces of each belt annular recess (32) are tapered so as to gradually expand toward the opening edge.

プレッシャフランジ(2)の外周壁部(22)の上部には、環状凹所(24)と環状通路(S)とを連通させる貫通孔(4)が形成されている。貫通孔(4)は、プレッシャフランジ(2)の外周面(2a)における最上部の帯環状凸部(31)に周方向等間隔おきに開口するように、計６つ設けられている。各貫通孔(4)は、断面円形の短いストレート孔よりなる。   A through hole (4) for communicating the annular recess (24) and the annular passage (S) is formed in the upper portion of the outer peripheral wall portion (22) of the pressure flange (2). A total of six through-holes (4) are provided so that the uppermost annular ring convex part (31) on the outer peripheral surface (2a) of the pressure flange (2) opens at equal intervals in the circumferential direction. Each through hole (4) consists of a short straight hole with a circular cross section.

図６は、プレッシャフランジの外周面に形成される凹凸部の変形例を示すものである。図６に示すプレッシャフランジ(2)の場合、その外周面(2a)に上下に交互に形成されている各複数の帯環状凸部(31X)および帯環状凹部(32X)が、プレッシャフランジ(2)の中心軸線に対して所定の角度をなすように傾斜させられているものである。   FIG. 6 shows a modification of the uneven portion formed on the outer peripheral surface of the pressure flange. In the case of the pressure flange (2) shown in FIG. 6, each of the plurality of annular ring-shaped protrusions (31X) and the annular ring-shaped recesses (32X) alternately formed on the outer peripheral surface (2a) is formed into a pressure flange (2 ) To the central axis so as to form a predetermined angle.

図７は、凹凸部の別の変形例を示すものである。図７に示すプレッシャフランジ(2)の場合、その外周面(2a)に上下に交互に形成されている各複数の帯環状凸部(31)および帯環状凹部(32)は、それぞれ幅および／または深さが異なるものとなされている。   FIG. 7 shows another modification of the uneven portion. In the case of the pressure flange (2) shown in FIG. 7, the plurality of annular ring-shaped protrusions (31) and the annular ring-shaped recesses (32) formed alternately on the outer peripheral surface (2a) are vertically Or the depth is different.

図８は、凹凸部の別の変形例を示すものである。図８に示すプレッシャフランジ(2)の外周面(2a)には、略半球形をした小突起状凸部(33)が周方向および上下方向に並んで多数個形成されている。また、外周面(2a)の最上部および最下部に、帯環状凸部(31)が形成されている。   FIG. 8 shows another modification of the uneven portion. On the outer peripheral surface (2a) of the pressure flange (2) shown in FIG. 8, a large number of small projections (33) having a substantially hemispherical shape are formed side by side in the circumferential direction and the vertical direction. Further, an annular ring-shaped convex part (31) is formed on the uppermost part and the lowermost part of the outer peripheral surface (2a).

図９は、凹凸部のさらに別の変形例を示すものである。図９に示すプレッシャフランジ(2)では、その外周面(2a)に、ディンプル状凹部(34)が周方向および上下方向に並んで多数個形成されている。また、外周面(2a)の最下部に、帯環状凸部(31)が形成されている。   FIG. 9 shows still another modification of the uneven portion. In the pressure flange (2) shown in FIG. 9, a plurality of dimple-like recesses (34) are formed on the outer peripheral surface (2a) side by side in the circumferential direction and the vertical direction. In addition, a band annular convex portion (31) is formed at the lowermost portion of the outer peripheral surface (2a).

上記プレッシャフランジ(2)を備えた充填包装機(10)において、内容物が充填されたチューブ状包材(T)から枕状内容物充填容器(C1)を成形する際、チューブ状包材(T)に対してシールジョー(161)および成形フラップ(162)による側方からの加圧力が作用すると、それに伴って内容物の流体圧が発生する。そして、発生した流体圧の一部が環状通路(S)を通じてプレッシャフランジ(2)の上方に逃がされ、残りの流体圧がプレッシャフランジ(2)のフランジ下面(2a)および環状凹所(24)の内面で受け止められることにより、チューブ状包材(T)の破損や、成形不良、充填量不足等を生じることなく、容器(C1)の成形が良好に行われる。
この際、環状通路(S)を上向きに流れる内容物は、プレッシャフランジ(2)の外周面(2a)に形成された凸部(31)(31X)(33)および／または凹部(32)(32X)(34)によって撹乱されることにより、乱流が生じる。また、環状凹所(24)の内面で受け止められた内容物の流体圧の一部が貫通孔(4)から環状通路(S)の上部出口付近に向かって噴出し、この噴出流が環状通路(S)を上向きに流れる内容物の一部とぶつかる。
これらの凸部(31)(31X)(33)、凹部(32)(32X)(34)および貫通孔(4)による相乗的な作用によって、内容物の流れの垂直方向の力が分散されるため、内容物の液面から飛沫が跳ね上がるのが効果的に抑制され、ひいては、内容物の飛沫の付着に起因するチューブ状包材(T)成形時の縦シール不良の発生が抑止される。 In the filling and packaging machine (10) provided with the pressure flange (2), when forming the pillow-shaped content filling container (C1) from the tubular packaging material (T) filled with the contents, the tubular packaging material ( When a pressing force from the side by the sealing jaw (161) and the molding flap (162) acts on T), a fluid pressure of the contents is generated accordingly. Then, a part of the generated fluid pressure is released to the upper side of the pressure flange (2) through the annular passage (S), and the remaining fluid pressure is transferred to the flange lower surface (2a) and the annular recess (24) of the pressure flange (2). ), The container (C1) can be molded satisfactorily without causing damage to the tubular packaging material (T), molding defects, insufficient filling amount, and the like.
At this time, the contents flowing upward in the annular passage (S) are the convex portions (31) (31X) (33) and / or the concave portions (32) (on the outer peripheral surface (2a) of the pressure flange (2) ( By being disturbed by (32X) (34), turbulence is generated. Further, a part of the fluid pressure of the contents received by the inner surface of the annular recess (24) is ejected from the through hole (4) toward the vicinity of the upper outlet of the annular passage (S), and this jet flow is Hit (S) with some of the contents that flow upward.
By the synergistic action of these convex portions (31) (31X) (33), concave portions (32) (32X) (34) and through holes (4), the vertical force of the content flow is dispersed. Therefore, it is possible to effectively suppress splashing of the splash from the liquid level of the contents, and consequently to prevent occurrence of a vertical seal failure during molding of the tubular packaging material (T) due to adhesion of the splashes of the contents.

(10)：充填包装機
(14)：充填管
(T)：チューブ状包材
(C1)：枕状内容物充填容器
(2)：プレッシャフランジ
(2a)：（プレッシャフランジの）外周面
(2b)：（プレッシャフランジの）下面
(S)：環状通路
(21)：内周壁部
(22)：外周壁部
(23)：上壁部
(24)：環状凹所
(31)(31X)：帯環状凸部
(32)(32X)：帯環状凹部
(33)：突起状凸部
(34)：ディンプル状凹部
(4)：貫通孔 (10): Filling and packaging machine
(14): Filling tube
(T): Tube-shaped packaging material
(C1): Pillow-shaped contents filling container
(2): Pressure flange
(2a): Outer peripheral surface (of the pressure flange)
(2b): bottom surface (of pressure flange)
(S): Annular passage
(21): Inner wall
(22): Outer wall
(23): Upper wall
(24): Annular recess
(31) (31X): Band annular convex part
(32) (32X): Band annular recess
(33): Protruding convex part
(34): Dimple-like recess
(4): Through hole

Claims (6)

内容物を充填する充填管が上方から挿入された垂直なチューブ状包材内において内容物充填レベルよりも下方に位置するように充填管の外周に取り付けられ、その外周面とチューブ状包材の内周面との間に、チューブ状包材から内容物充填容器が成形される際に生じる内容物の流体圧の一部を上方に逃がす環状通路が形成されるように構成されている充填包装機のプレッシャフランジであって、
外周面に、凸部および凹部のうち少なくともいずれか一方が形成されていることを特徴とする、充填包装機のプレッシャフランジ。 The filling tube for filling the contents is attached to the outer periphery of the filling tube so as to be positioned below the content filling level in the vertical tubular packaging material inserted from above. Filling packaging configured to form an annular passage between the inner peripheral surface and releasing upward a part of the fluid pressure of the contents generated when the contents filling container is formed from the tubular packaging material The pressure flange of the machine,
A pressure flange of a filling and packaging machine, wherein at least one of a convex portion and a concave portion is formed on an outer peripheral surface. 充填管の外周に嵌め付けられる内周壁部と、内周壁部と同心状に配置された外周壁部と、内周壁部および外周壁部の上端どうしを連結している上壁部とを備えており、内周壁部、外周壁部および上壁部によって下面に開口した環状凹所が形成されており、外周壁部の上部に、環状凹所と環状通路とを連通させる貫通孔が形成されていることを特徴とする、請求項１記載の充填包装機のプレッシャフランジ。   An inner peripheral wall portion fitted to the outer periphery of the filling tube, an outer peripheral wall portion arranged concentrically with the inner peripheral wall portion, and an upper wall portion connecting the inner peripheral wall portion and the upper end of the outer peripheral wall portion. An annular recess opened on the lower surface is formed by the inner peripheral wall portion, the outer peripheral wall portion, and the upper wall portion, and a through-hole that connects the annular recess and the annular passage is formed in the upper portion of the outer peripheral wall portion. The pressure flange of the filling and packaging machine according to claim 1, wherein: 外周面に、凸部および凹部のうち少なくともいずれか一方が、合計で複数個形成されていることを特徴とする、請求項１または２記載の充填包装機のプレッシャフランジ。   The pressure flange of the filling and packaging machine according to claim 1, wherein at least one of a convex portion and a concave portion is formed in total on the outer peripheral surface. 外周面に、帯環状凸部および帯環状凹部のうち少なくとも一方が、合計で複数個形成されていることを特徴とする、請求項３記載の充填包装機のプレッシャフランジ。   4. The pressure flange of the filling and packaging machine according to claim 3, wherein a plurality of at least one of a band annular convex part and a band annular concave part are formed on the outer peripheral surface in total. 外周面の最下部に、チューブ状包材の内周面との間隔が０．３〜１ｍｍとなる帯環状凸部が形成されていることを特徴とする、請求項１〜４のいずれか１つに記載の充填包装機のプレッシャフランジ。   The band annular convex part with which the space | interval with the inner peripheral surface of a tubular packaging material becomes 0.3-1 mm in the lowest part of an outer peripheral surface is formed, The any one of Claims 1-4 characterized by the above-mentioned. Pressure flanges for filling and packaging machines described in 1. 外周面の高さが２０ｍｍ以上であることを特徴とする、請求項１〜５のいずれか１つに記載の充填包装機のプレッシャフランジ。   The pressure flange of the filling and packaging machine according to any one of claims 1 to 5, wherein the height of the outer peripheral surface is 20 mm or more.
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