JP2000344264A - Cap with built-in unsealing blade - Google Patents

Cap with built-in unsealing blade

Info

Publication number
JP2000344264A
JP2000344264A JP11160817A JP16081799A JP2000344264A JP 2000344264 A JP2000344264 A JP 2000344264A JP 11160817 A JP11160817 A JP 11160817A JP 16081799 A JP16081799 A JP 16081799A JP 2000344264 A JP2000344264 A JP 2000344264A
Authority
JP
Japan
Prior art keywords
spout
cap
built
sealing film
opening
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
JP11160817A
Other languages
Japanese (ja)
Inventor
Akitaka Iwasaki
晃孝 岩崎
Norikazu Kakigi
典一 柿木
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 JP11160817A priority Critical patent/JP2000344264A/en
Publication of JP2000344264A publication Critical patent/JP2000344264A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42Details of containers or of foldable or erectable container blanks
    • B65D5/72Contents-dispensing means
    • B65D5/74Spouts
    • B65D5/746Spouts formed separately from the container
    • B65D5/747Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
    • B65D5/748Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall a major part of the container wall or membrane being left inside the container after the opening
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint 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
    • B29C66/112Single lapped joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/20Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2422Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24221Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/302Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53245Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
    • B29C66/53246Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers
    • B29C66/53247Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers said spouts comprising flanges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/712Containers; Packaging elements or accessories, Packages
    • B29L2031/7162Boxes, cartons, cases
    • B29L2031/7166Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Closures For Containers (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a cap with a built-in unsealing blade not generating the fear of forming pinholes on a sealing film for sealing an injection opening of a paper container for a liquid when a cap with a built-in unsealing blade is protruded on the upper face of an outer peripheral edge of the injection opening of the paper container for the liquid by heat fusion welding in the ultrasonic fusion bonding process. SOLUTION: A cap formed of a spout and a cap main body with a built-in movable unsealing cylindrical body is protruded on the upper face of an outer peripheral edge of an injection opening of a paper container for a liquid sealed with a sealing film by the ultrasonic fusion bonding process, and when the cap screwed on the spout is rotated in the removing direction, the unsealing cylindrical body is lowered to break the sealing film by an unsealing blade provided on the lower end face, and a fusion bonding ring 121 provided on the lower face of a flange 120 formed around the lower end of an injection cylinder 110 of the spout 100 is formed of an upper base section 121a and a lower end section 121b, and the sectional shape of the upper base is formed into a longitudinal shape, while the sectional shape of the lower end is formed into the reverse trapezoid shape.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、清酒、果汁飲料、
調味料、柔軟剤や液体洗剤などに使用する液体用紙容器
の頂部に突設される開封刃内蔵口栓に関するものであ
る。
TECHNICAL FIELD The present invention relates to sake, fruit juice beverages,
The present invention relates to a plug with a built-in opening blade protruding from the top of a liquid paper container used for a seasoning, a softener, a liquid detergent, or the like.

【0002】[0002]

【従来の技術】従来、液体用紙容器は、四角柱状の胴部
をもち、その切り妻屋根形の頂部傾斜板の注出孔に、使
用時の便宜性から、封止及び注出のための口栓が突設さ
れたものが広く使用されていた。
2. Description of the Related Art Conventionally, a liquid paper container has a square pillar-shaped body, and is provided with a gable roof-shaped top inclined plate for discharging and sealing for convenience in use. The one with a spout was widely used.

【0003】この口栓には、使用時に容器を封止してい
る封止フィルムを破断するための開封刃を内蔵した口栓
があり、例えば実公平5−35058号公報で開示され
たものがある。この開封刃を内蔵する口栓は、破断可能
なフィルムで封止した液体用紙容器の注出孔に取着され
この注出孔に対応した注出筒を備えるスパウトと、この
スパウトの注出筒に挿入され下縁に開封刃を備える略筒
状の開封用筒体と、注出筒を覆うようにして取着された
キャップとからなり、注出筒の内面とこれに相対する開
封用筒体の外面との両者は、互いに摺接して上下方向に
移動可能な回転防止手段を備えて、開封用筒体が注出筒
に対して上下移動可能に設けられ、開封用筒体は、開封
用筒体の筒壁部に上縁から下縁側に向けて傾斜して案内
斜面を備え、キャップは、下方に面して開封用筒体の斜
面に摺接する案内斜面を備える筒体を有して、キャップ
の回転時に開封用筒体を下降可能に設けたものであり、
内容物を注出するために、キャップを回転させて取り外
すときに、例えば図4(b)に示すように、キャップ
(200)の回転により開封用筒体(300)を降下さ
せ先端に設けられた開封刃(320)で容器を封止する
封止フィルム(400)を破断して容器を開封するもの
であった。
[0003] The plug includes a plug having a built-in opening blade for breaking a sealing film sealing a container at the time of use. For example, a plug disclosed in Japanese Utility Model Publication No. 5-35058 is disclosed. is there. A spout having a built-in opening blade is attached to an ejection hole of a liquid paper container sealed with a breakable film and has a spout cylinder corresponding to the spout hole, and a spout cylinder of the spout. A cylindrical opening cylinder having an opening blade at its lower edge and a cap attached so as to cover the spouting cylinder, the inner surface of the spouting cylinder and an opening cylinder facing the same. Both the outer surface of the body and the outer surface of the body are provided with anti-rotation means that can slide and move in the vertical direction, and the opening cylinder is provided so as to be vertically movable with respect to the pouring cylinder, and the opening cylinder is opened. The cylinder wall portion of the tubular body has a guide slope inclined from the upper edge toward the lower edge side, and the cap has a tubular body facing downward and having a guide slope slidably in contact with the slope of the opening tubular body. The opening cylinder is provided so that it can be lowered when the cap rotates.
When the cap is rotated to remove the contents in order to pour out the contents, for example, as shown in FIG. 4 (b), the opening cylinder (300) is lowered by rotation of the cap (200) and provided at the tip. The container was opened by breaking the sealing film (400) for sealing the container with the opening blade (320).

【0004】[0004]

【発明が解決しようとする課題】しかしながら、封止フ
ィルムで封止された液体用紙容器の注出孔の外周縁部上
面に、図3(a)に示すスパウト(100)のフランジ
(120)下面に断面逆台形状の溶着リング(121)
を設けた従来の開封刃内蔵口栓を、超音波溶着法で熱融
着して突設するいわゆる外付けするときに、振動エネル
ギーが超音波ホーンからフランジ、容器壁、封止フィル
ムへと伝わり、この振動エネルギーは、図3(b)に示
すように、封止フィルム(400)の中心に向かい(矢
印)、封止フィルムの中心部を上下に共鳴振動させるよ
うになり、封止フィルムの中心にピンホールが発生する
ことがあった。
However, the spout (100) shown in FIG. 3 (a) has a flange (120) lower surface on the outer peripheral edge upper surface of the liquid paper container sealed with the sealing film. Welding ring with inverted trapezoidal cross section (121)
Vibration energy is transmitted from the ultrasonic horn to the flange, container wall, and sealing film when the conventional opening blade with a built-in opening blade is heat-sealed and ultrasonically welded by the ultrasonic welding method. As shown in FIG. 3B, the vibration energy is directed toward the center of the sealing film (400) (arrow), and causes the center of the sealing film to resonate vertically and resonate. A pinhole sometimes occurred at the center.

【0005】本発明は、上述の従来の開封刃内蔵口栓を
超音波溶着法で外付けするときの問題を解決するもので
あり、液体用紙容器の注出孔の外周縁部上面に、開封刃
内蔵口栓を超音波溶着法で熱融着して突設しても、液体
用紙容器の注出孔を封止する封止フィルムにピンホール
が発生する危惧のない開封刃内蔵口栓を提供するもので
ある。
The present invention solves the above-mentioned problem of externally attaching the conventional plug with a built-in opening blade by an ultrasonic welding method. The opening is provided on the upper surface of the outer peripheral edge of the discharge hole of the liquid paper container. Even if the plug with built-in blade is heat-fused by ultrasonic welding and protruded, there is no risk of pinholes being generated in the sealing film that seals the discharge hole of the liquid paper container. To provide.

【0006】[0006]

【課題を解決するための手段】すなわち、本発明は、封
止フィルムで封止された液体用紙容器の注出孔の外周縁
部上面に超音波溶着法により突設され、開封用筒体を移
動可能に内蔵するスパウトとキャップとからなり、前記
スパウトに螺着する前記キャップを取り外し方向へ回転
させたときに、前記開封用筒体が下降して下端面に設け
られた開封刃で前記封止フィルムを破断する口栓におい
て、前記スパウトの注出筒下端に周設するフランジの下
面に設けられた溶着リングが、上方基部と該上方基部下
端に連続する下方先端部とからなり、前記上方基部の断
面形状が両側が垂直な長方形状で、前記下方先端部の断
面形状が両側の上端から下方へ漸次狭くなるテーパーを
もつ逆台形状であることを特徴とする開封刃内蔵口栓で
ある。
That is, according to the present invention, there is provided an unsealing cylindrical body which is provided on an upper surface of an outer peripheral edge of a discharge hole of a liquid paper container sealed with a sealing film by ultrasonic welding. It comprises a movable spout and a cap, and when the cap screwed to the spout is rotated in the removing direction, the opening tubular body is lowered and the sealing is performed by an opening blade provided on a lower end surface. In the spout for breaking the stop film, a welding ring provided on the lower surface of a flange provided at the lower end of the spout cylinder at the lower end of the spout comprises an upper base and a lower end continuous with the lower end of the upper base. A cross-sectional shape of the base portion is a rectangular shape on both sides being vertical, and a cross-sectional shape of the lower tip portion is an inverted trapezoidal shape having a taper that gradually narrows downward from the upper ends on both sides, and is a spout with a built-in opening blade. .

【0007】[0007]

【作用】本発明の開封刃内蔵口栓を、図2(a)に示す
ように、封止フィルム(400)で封止された液体用紙
容器(20)の注出孔(21)の外周縁部上面の所定位
置に配置して超音波溶着法で取り付けると、まず、図2
(b)に示すように、口栓のスパウト(100)のフラ
ンジ(120)下面に設けられた溶着リング(121)
の下方先端部(121b)が溶着し、次いで上方基部
(121a)が溶着するが、このときに、図2(c)に
示すように、上方基部(121a)が揺れながら溶着し
するため、超音波ホーンからの振動エネルギーを消費
し、封止フィルム(400)への振動エネルギーの伝わ
りが緩和される。この結果、封止フィルムの中心部での
振動エネルギーによるピンホールの発生が防げる。
As shown in FIG. 2 (a), an outer peripheral edge of a spout hole (21) of a liquid paper container (20) sealed with a sealing film (400) as shown in FIG. When it is arranged at a predetermined position on the upper surface and attached by ultrasonic welding, first, FIG.
As shown in (b), a welding ring (121) provided on the lower surface of the flange (120) of the spout (100) of the plug.
The lower end portion (121b) is welded and then the upper base portion (121a) is welded. At this time, as shown in FIG. 2 (c), the upper base portion (121a) is welded while shaking, so Vibration energy from the sonic horn is consumed, and transmission of the vibration energy to the sealing film (400) is reduced. As a result, generation of pinholes due to vibration energy at the center of the sealing film can be prevented.

【0008】[0008]

【発明の実施の形態】本発明の一実施形態の開封刃内蔵
口栓(10)は、図4(a)に示すように、開封用筒体
を移動可能に内蔵するスパウト(100)とこのスパウ
トに螺合して装着するキャップ(200)とからなり、
封止フィルム(400)で封止された液体用紙容器(2
0)の注出孔(21)の外周縁部上面に、スパウト(1
00)の注出筒(110)の下端に周設するフランジ
(120)の下面を超音波溶着法などにより熱融着して
接着する所謂外付けで突設され、図4(b)に示すよう
に、容器を開封するために、スパウト(100)に螺合
して装着するキャップ(200)を取り外すときに、キ
ャップの取り外し方向の回転により開封用筒体(30
0)を下方へ移動させて、この開封用筒体の下端面に設
けられた開封刃(320)で封止フィルム(400)を
破断して開封する口栓である。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 4 (a), a spout (100) having a built-in opening cylinder so as to be movable is provided with a spout (100) having a built-in opening blade according to an embodiment of the present invention. Consists of a cap (200) that is screwed onto the spout,
The liquid paper container (2) sealed with the sealing film (400)
The spout (1) is provided on the upper surface of the outer peripheral edge of the pouring hole (21).
The lower surface of a flange (120) provided around the lower end of the dispensing cylinder (110) of FIG. As described above, when the cap (200) to be screwed and attached to the spout (100) is removed to open the container, the opening cylinder (30) is rotated by rotating the cap in the removing direction.
0) is moved downward, and the sealing film (400) is broken by the opening blade (320) provided on the lower end surface of the opening cylinder to open the stopper.

【0009】そして、本発明の一実施形態の開封刃内蔵
口栓は、図1(a)に示すように、スパウト(100)
の注出筒(110)下端に周設するフランジ(120)
の下面に設けられた溶着リング(121)が、図1
(b)に示すように、上方基部(121a)とこの上方
基部下端に連続する下方先端部(121b)とからな
り、上方基部の断面形状が両側が垂直な長方形状で、下
方先端部の断面形状が両側の上端から下方へ漸次狭くな
るテーパーをもつ逆台形状に設けるものである。なお、
発明者らの試行から得られた知見では、図1(c)に示
す溶着リングの幅(a)と高さ(b)との比が、a:b
=3:5のときが溶着強度面から考慮して最も良好な結
果が得られている。
As shown in FIG. 1A, a spout (100) having a built-in opening blade according to an embodiment of the present invention is provided.
(120) flange around the lower end of the pouring cylinder (110)
The welding ring (121) provided on the lower surface of FIG.
As shown in (b), an upper base (121a) and a lower tip (121b) continuous with the lower end of the upper base are formed. The upper base has a rectangular cross section with both sides perpendicular to each other, and a cross section of the lower tip. It is provided in an inverted trapezoidal shape having a taper whose shape gradually narrows downward from the upper ends on both sides. In addition,
According to the knowledge obtained from the trial of the inventors, the ratio between the width (a) and the height (b) of the welding ring shown in FIG.
= 3: 5 gives the best results in view of the welding strength.

【0010】また、開封用筒体(300)は、図4
(b)に示すように、筒体本体(310)の上方外周面
にはスパウトとの通常4個の摺動突起を設け、下端に
は、複数個の三角状の開封刃(320)を欠刃部(32
1)をもって連接させて垂設するものである。欠刃部を
設けるのは、封止フィルム(400)を開封用筒体で破
断したときに、封止フィルムの破断片(401)が、容
器に収容されている内容物(30)内に脱落しないよう
にするものである。
Further, the opening cylinder (300) is shown in FIG.
As shown in (b), usually four sliding projections with a spout are provided on the outer peripheral surface of the cylindrical body (310), and a plurality of triangular opening blades (320) are missing at the lower end. Blade (32
1) to be connected and suspended. The notch portion is provided because when the sealing film (400) is broken by the opening cylinder, the broken pieces (401) of the sealing film fall into the contents (30) contained in the container. It is something not to do.

【0011】上述の本発明の実施形態の開封刃内蔵口栓
は、封止フィルムで封止された液体用紙容器の注出孔の
外周縁部上面に超音波溶着法により所謂外付けで突設し
ても、封止フィルムにピンホールは全く発生することが
なかった。また、溶着強度も良好であった。
The above-mentioned plug with a built-in opening blade according to the embodiment of the present invention is so-called externally attached to the upper surface of the outer peripheral portion of the discharge hole of the liquid paper container sealed with a sealing film by ultrasonic welding. However, no pinholes were generated in the sealing film. Also, the welding strength was good.

【0012】[0012]

【発明の効果】本発明の開封刃内蔵口栓は、スパウトの
フランジ下面に設けられる溶着リングが、断面形状を異
にする上方基部と下方先端部とからなり、超音波溶着時
に、上方基部が揺れながら溶着して超音波ホーンからの
振動エネルギーを緩和するため、従来の口栓で発生し易
かった封止フィルムの中心部の振動エネルギーによるピ
ンホールを防ぐことができる。
According to the plug with a built-in opening blade of the present invention, the welding ring provided on the lower surface of the flange of the spout comprises an upper base and a lower tip having different cross-sectional shapes, and the upper base is formed by ultrasonic welding. Since the welding is performed while shaking and the vibration energy from the ultrasonic horn is reduced, it is possible to prevent a pinhole due to the vibration energy of the central portion of the sealing film, which is easily generated by the conventional plug.

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

【図1】(a)は、本発明の開封刃内蔵口栓の一実施形
態のスパウトの正面図であり、(b)は、そのA部分の
拡大断面図で、(c)は、溶着リングのみの拡大断面図
断面図である。
FIG. 1A is a front view of a spout according to an embodiment of the spout with a built-in opening blade of the present invention, FIG. 1B is an enlarged sectional view of a portion A, and FIG. It is an expanded sectional view sectional view of only a figure.

【図2】(a)は、液体用紙容器の注出孔の外周縁部上
面に本発明の一実施形態のスパウトを超音波シール法で
取り付けるためにセットした状態を示す説明図であり、
(b)は、溶着リングの下方先端部が溶着したときの状
態を示す説明図であり、(c)は、上方基部が溶着する
ときの状態を示す説明図である。
FIG. 2A is an explanatory view showing a state in which a spout according to one embodiment of the present invention is set on an upper surface of an outer peripheral edge of a spouting hole of a liquid paper container so as to be attached by an ultrasonic sealing method;
(B) is an explanatory view showing a state when the lower end of the welding ring is welded, and (c) is an explanatory view showing a state when the upper base is welded.

【図3】(a)は、従来の開封刃内蔵口栓のスパウトの
一例の溶着リングの形状を示す部分断面図であり、
(b)は、そのスパウトを液体用紙容器の注出孔の外周
縁部上面に超音波シール法で取り付けているときの状態
を示す説明図である。
FIG. 3 (a) is a partial cross-sectional view showing a shape of a welding ring of an example of a conventional spout of a plug with a built-in opening blade;
(B) is an explanatory view showing a state in which the spout is attached to the upper surface of the outer peripheral portion of the discharge hole of the liquid paper container by an ultrasonic sealing method.

【図4】(a)は、一例の開封刃内蔵口栓を取り付けた
液体用紙容器の開封前の状態を示す説明図であり、
(b)は、開封したときの状態を示す説明図である。
FIG. 4A is an explanatory diagram showing a state before opening a liquid paper container to which an example of a plug with a built-in opening blade is attached,
(B) is an explanatory view showing a state at the time of opening.

【符号の説明】[Explanation of symbols]

10……開封刃内蔵口栓 20……液体用紙容器 21……注出孔 30……内容物 100……スパウト 110……注出筒 111……螺合部 120……フランジ 121……溶着リング 121a……上方基部 121b……下方先端部 200……キャップ 300……開封用筒体 310……筒体本体 320……開封刃 321……欠刃部 400……封止フィルム 401……破断片 DESCRIPTION OF SYMBOLS 10 ... Opening blade built-in stopper 20 ... Liquid paper container 21 ... Spout hole 30 ... Contents 100 ... Spout 110 ... Spout cylinder 111 ... Threaded part 120 ... Flange 121 ... Fusion ring 121a Upper base 121b Lower tip 200 Cap 300 Opening cylinder 310 Main body 320 Opening blade 321 Missing blade part 400 Sealing film 401 Fragment

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 3E060 AA05 BC04 CF04 CF06 DA30 EA03 EA13 3E084 AA05 AA12 AA34 AB01 AB02 BA03 BA05 CA01 DA01 DB12 FA09 FB01 FD13 GA04 GB04 GB09 KB01 LA01 LA25  ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E060 AA05 BC04 CF04 CF06 DA30 EA03 EA13 3E084 AA05 AA12 AA34 AB01 AB02 BA03 BA05 CA01 DA01 DB12 FA09 FB01 FD13 GA04 GB04 GB09 KB01 LA01 LA25

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】封止フィルムで封止された液体用紙容器の
注出孔の外周縁部上面に超音波溶着法により突設され、
開封用筒体を移動可能に内蔵するスパウトとキャップと
からなり、前記スパウトに螺着する前記キャップを取り
外し方向へ回転させたときに、前記開封用筒体が下降し
て下端面に設けられた開封刃で前記封止フィルムを破断
する口栓において、前記スパウトの注出筒下端に周設す
るフランジの下面に設けられた溶着リングが、上方基部
と該上方基部下端に連続する下方先端部とからなり、前
記上方基部の断面形状が両側が垂直な長方形状で、前記
下方先端部の断面形状が両側の上端から下方へ漸次狭く
なるテーパーをもつ逆台形状であることを特徴とする開
封刃内蔵口栓。
1. An ultrasonic welding method is provided on an upper surface of an outer peripheral portion of a pouring hole of a liquid paper container sealed with a sealing film.
A spout and a cap which movably house the opening cylinder are provided, and when the cap screwed to the spout is rotated in a removing direction, the opening cylinder is lowered and provided on the lower end surface. In a plug that breaks the sealing film with an opening blade, a welding ring provided on the lower surface of a flange provided around the lower end of the spouting cylinder of the spout has an upper base and a lower end continuous with the lower end of the upper base. Wherein the cross-sectional shape of the upper base is a rectangular shape with both sides vertical, and the cross-sectional shape of the lower tip is an inverted trapezoidal shape having a taper that gradually narrows downward from the upper ends on both sides. Built-in spout.
JP11160817A 1999-06-08 1999-06-08 Cap with built-in unsealing blade Pending JP2000344264A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11160817A JP2000344264A (en) 1999-06-08 1999-06-08 Cap with built-in unsealing blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11160817A JP2000344264A (en) 1999-06-08 1999-06-08 Cap with built-in unsealing blade

Publications (1)

Publication Number Publication Date
JP2000344264A true JP2000344264A (en) 2000-12-12

Family

ID=15723073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11160817A Pending JP2000344264A (en) 1999-06-08 1999-06-08 Cap with built-in unsealing blade

Country Status (1)

Country Link
JP (1) JP2000344264A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011113629A1 (en) * 2010-03-18 2011-09-22 Robert Bosch Gmbh Plastic closure device for tubular bags
WO2012034836A1 (en) 2010-09-15 2012-03-22 Robert Bosch Gmbh Closeable opening devices
DE102011080923A1 (en) 2011-08-12 2013-02-14 Robert Bosch Gmbh Plastic closure device for tubular bags
DE102011084508A1 (en) 2011-10-14 2013-04-18 Robert Bosch Gmbh Plastic closure device for a tubular bag

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011113629A1 (en) * 2010-03-18 2011-09-22 Robert Bosch Gmbh Plastic closure device for tubular bags
WO2012034836A1 (en) 2010-09-15 2012-03-22 Robert Bosch Gmbh Closeable opening devices
US8695833B2 (en) 2010-09-15 2014-04-15 Robert Bosch Gmbh Closeable opening devices
DE102011080923A1 (en) 2011-08-12 2013-02-14 Robert Bosch Gmbh Plastic closure device for tubular bags
WO2013023808A1 (en) 2011-08-12 2013-02-21 Robert Bosch Gmbh Plastic closure device for tubular bags
DE102011084508A1 (en) 2011-10-14 2013-04-18 Robert Bosch Gmbh Plastic closure device for a tubular bag
WO2013053588A1 (en) 2011-10-14 2013-04-18 Robert Bosch Gmbh Plastic closure device for a tubular bag
DE102011084508B4 (en) 2011-10-14 2022-03-03 Syntegon Pouch Systems Ag Plastic closure device for a tubular bag

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