JP2013075684A - Synthetic resin lid member - Google Patents

Synthetic resin lid member Download PDF

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JP2013075684A
JP2013075684A JP2011216964A JP2011216964A JP2013075684A JP 2013075684 A JP2013075684 A JP 2013075684A JP 2011216964 A JP2011216964 A JP 2011216964A JP 2011216964 A JP2011216964 A JP 2011216964A JP 2013075684 A JP2013075684 A JP 2013075684A
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seal wall
synthetic resin
lid member
barrier film
film layer
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JP6281758B2 (en
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Noriyoshi Egawa
紀義 江川
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Yoshino Kogyosho Co Ltd
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Yoshino Kogyosho Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To solve the problem in prior art regarding a lid member having an opening mechanism by a breaking line and a pull ring, and to suppress decrease in barrier properties due to a seal wall without impairing easy-breakability of a breaking line formed on the seal wall.SOLUTION: In a synthetic resin lid member densely covering an opening of a container, the lid member includes: a seal wall covering the opening and defining a removal plate part by surrounding it by a breaking line thinly formed so as to be breakable; and a pull ring connected to the removal plate part via a connecting pillar extending upward with a peripheral edge part of the removal plate part as a base end. A barrier property film layer is laminated at a lower surface side of the seal wall so as to cover a region including the breaking line, and a slit or a hole is formed through the barrier property film layer in a breaking line portion positioned immediately adjacent to a base end of the connecting pillar.

Description

本発明は、破断線とプルリングによる開封機構を備えた合成樹脂製蓋部材に関する。
The present invention relates to a synthetic resin lid member having an opening mechanism by a break line and a pull ring.

プルリングを備えた合成樹脂製蓋部材の典型例としては、醤油やソースや食用油等の液体調味料を収容した壜体の口筒部に組付き固定されて使用されている注出キャップや中栓体を挙げることができる。
例えば、特許文献1には破断線とプルリングによる開封機構を備えた注出キャップに係る発明が記載されている。
As a typical example of a synthetic resin lid member provided with a pull ring, a pouring cap used in combination with a mouth tube portion of a housing containing a liquid seasoning such as soy sauce, sauce or edible oil is used. A plug can be mentioned.
For example, Patent Document 1 describes an invention relating to a dispensing cap provided with an opening mechanism using a break line and a pull ring.

図6、7には特許文献1に実施例として記載される注出キャップを示す。
この注出キャップは、キャップ本体101と、このキャップ本体101にヒンジ109を介して連接されるオーバーキャップ110から構成されている。
キャップ本体101は、壜体の口筒部に密に組付く組付き筒102を有し、この組付き筒102の上端部から有底筒状の注出筒104を起立設し、この注出筒104の底壁で、口筒部の開口部を覆うシール壁106には薄肉に形成した破断線Lbにより囲成して除去板部112が規定され、この除去板部112の外周縁部を基端として上方に延びる連結柱113を介して除去板部112に接続されるプルリング114を備えている。(なお、この例ではキャップ本体101は外装部101aと中栓部101bの2ケの部材から構成されている。)
そして、この注出キャップを備えた、液体調味料等を充填した製品を使用する際には、プルリング114を上方に引張り、破断線Lbを破断し、除去板部112を取り除き、この取り除いた部分を開口部として内容液を注出することができる。
6 and 7 show a dispensing cap described as an example in Patent Document 1. FIG.
The pouring cap includes a cap body 101 and an overcap 110 connected to the cap body 101 via a hinge 109.
The cap main body 101 has an assembled cylinder 102 that is closely assembled to the mouth cylinder portion of the housing, and a bottomed cylindrical extraction cylinder 104 is erected from the upper end portion of the assembled cylinder 102, The sealing wall 106 that covers the opening of the mouth tube portion at the bottom wall of the tube 104 is surrounded by a thin broken line Lb to define a removal plate portion 112. The outer peripheral edge portion of the removal plate portion 112 is defined as A pull ring 114 connected to the removal plate portion 112 through a connecting column 113 extending upward as a base end is provided. (In this example, the cap body 101 is composed of two members, an exterior part 101a and an inner plug part 101b.)
When using a product filled with a liquid seasoning or the like having this pouring cap, the pull ring 114 is pulled upward, the breaking line Lb is broken, the removal plate portion 112 is removed, and the removed portion It is possible to pour out the content liquid with the opening.

特開平10−167308号公報JP 10-167308 A

たとえば、油成分を含む調味料用に使用する合成樹脂製の壜体容器では、酸素による内容液の品質の低下を防ぐために高い酸素バリア性を有するエチレン−ビニルアルコール共重合体(EVOH)樹脂製のフィルムを中間層として積層した合成樹脂製壜体を使用する場合がある。
一方、上記した図6、7に示すような注出キャップを使用する場合、少なくとも中栓部101bには、壜体の口筒部のシール性や、破断線Lbによる破断が容易である点を考慮して、比較的酸素バリア性の低い低密度ポリエチレン(LDPE)樹脂を使用する場合が多く、壜体容器の酸素バリア性を高くしても注出キャップ、特に注出キャップのシール壁106からの酸素の透過による品質の低下が懸念される。
For example, in the case of a synthetic resin casing used for a seasoning containing an oil component, it is made of an ethylene-vinyl alcohol copolymer (EVOH) resin having a high oxygen barrier property in order to prevent deterioration of the quality of the content liquid due to oxygen. In some cases, a synthetic resin casing in which the above film is laminated as an intermediate layer is used.
On the other hand, when using the pouring cap as shown in FIGS. 6 and 7 described above, at least the inner plug portion 101b has a feature that the sealing property of the mouth tube portion of the housing and the breaking by the breaking line Lb are easy. In view of this, a low density polyethylene (LDPE) resin having a relatively low oxygen barrier property is often used, and even if the oxygen barrier property of the casing container is increased, the discharge cap, particularly from the seal wall 106 of the discharge cap, is used. There is a concern about the deterioration of quality due to permeation of oxygen.

また、上記したような注出キャップのシール壁106による透過性の低下に係る問題は、酸素バリア性のように壜体外部から内部への気体の透過の他にも、壜体内部から外部への芳香成分等の有効成分の逃散の問題もある。   In addition, the problem related to the decrease in the permeability due to the sealing wall 106 of the extraction cap as described above is not only the gas permeation from the outside to the inside of the housing, but also the oxygen barrier property. There is also a problem of escape of active ingredients such as fragrance ingredients.

本発明は、破断線とプルリングによる開封機構を有する蓋部材に係る従来技術における問題点を解消すべく創案されたもので、シール壁に形成した破断線の易破断性を損なうことなく、シール壁によるバリア性の低下を抑制することを技術的課題とするものである。
The present invention was devised to solve the problems in the prior art relating to a lid member having an opening mechanism by a break line and a pull ring, and without damaging the easy breakability of the break line formed on the seal wall. It is a technical problem to suppress the deterioration of the barrier property due to.

上記技術的課題を解決する手段の内、本発明の主たる構成は、
容器の開口部を密に覆う合成樹脂製の蓋部材において、
開口部を覆うと共に破断可能に薄肉に形成した破断線により囲成して除去板部が規定されるシール壁と、除去板部の外周縁部を基端として上方に延びる連結柱を介して除去板部に接続されたプルリングとを備え、
シール壁の下面側に、破断線を含む領域を被覆するようにバリア性フィルム層を積層し、
連結柱の基端部の直近に位置する破断線部分においてバリア性フィルム層にスリット、あるいは孔を貫通形成する構成とする、
と云うものである。
Among the means for solving the above technical problems, the main configuration of the present invention is as follows.
In the cover member made of synthetic resin that covers the opening of the container closely,
It is removed through a seal wall that covers the opening and is surrounded by a rupture line that is thin enough to be ruptured to define the removal plate, and a connecting column that extends upward from the outer peripheral edge of the removal plate With a pull ring connected to the plate part,
Laminating a barrier film layer on the lower surface side of the seal wall so as to cover the area including the break line,
With a configuration in which a slit or a hole is formed through the barrier film layer at the break line portion located in the immediate vicinity of the base end portion of the connecting column,
It is said.

上記構成により、バリア性フィルム層をシール壁の下面側に積層することにより、注出キャップのシール壁によるバリア性の低下を効果的に抑制することが可能となる。
そして、シール壁の下面側は一般的にフラットに成形される部位でありバリア性フィルム層の積層は比較的容易に、破断線を横断するように破断線を含む領域を被覆、積層することが可能である。
なお、上記構成で蓋部材は注出キャップ、一般的なキャップ、中栓、一般的な蓋体等、容器の開口部を密に覆う部材を総称するものである。
また、シール壁はたとえば前述した注出キャップでは注出筒の底壁に相当し、蓋部材中、容器の開口部を平坦板状に覆う部位を総称するものである。
With the above configuration, by laminating the barrier film layer on the lower surface side of the seal wall, it is possible to effectively suppress the deterioration of the barrier property due to the seal wall of the dispensing cap.
The lower surface side of the seal wall is generally a flat part, and the barrier film layer can be laminated relatively easily, covering and laminating the region including the break line so as to cross the break line. Is possible.
In the above configuration, the lid member is a generic term for members that closely cover the opening of the container, such as a pouring cap, a general cap, an inner stopper, and a general lid.
The sealing wall corresponds to the bottom wall of the dispensing cylinder in the above-described dispensing cap, for example, and is a generic term for a portion of the lid member that covers the opening of the container in a flat plate shape.

一方、上記のようにバリア性フィルム層を積層すると、破断線による応力集中の効果が低下する、あるいはバリア性フィルムは多くの場合延伸変形し易い等の原因により、
プルリングを引張った際に、バリア性フィルム層が破断し難く、延伸変形し、破断線とプルリングによる開口機構がスムーズに機能せず、破断するのに大きな力を要する、除去板部が除去されてもバリア性フィルム層が剥離残存し開口できない、またバリア性フィルム層が破断したとしても除去板部が除去されて形成される開口縁部にバリア性フィルム層の延伸状に破断した部分がバリとしてはみ出すため内容液の注出の邪魔になって、注出方向が定まらない、液切れが悪い等の問題が生じる。
On the other hand, when the barrier film layer is laminated as described above, the stress concentration effect due to the breaking line is reduced, or the barrier film is often easily stretched and deformed.
When the pull ring is pulled, the barrier film layer is difficult to break, stretched and deformed, the opening mechanism by the break line and the pull ring does not function smoothly, and the removal plate portion that requires a large force to break is removed. Even if the barrier film layer is peeled off and cannot be opened, and even if the barrier film layer is broken, the removed plate portion is removed to form an opening edge portion of the barrier film layer in a stretched state as a burr. Since it protrudes, it interferes with the pouring of the content liquid, causing problems such as the pouring direction not being determined and the liquid running out being poor.

そこで上記構成において、連結柱の基端部の直近に位置する破断線部分においてバリア性フィルム層にスリットあるいは孔を貫通形成する構成とすることにより、このスリットや孔を起点として、破断線に沿ったバリア性フィルム層およびシール壁の破断をスムーズに進行させることが可能となる。
また、例えば剃刀で切込みを入れる程度のスリットやピンホール程度の孔でも破断の起点としての作用が十分に発揮されるため、スリットや孔の形成によるバリア性の低下は、極く小さく限定することが可能である。
なお、バリア性フィルム層へのスリットあるいは孔の貫通形成は、シール壁にバリア性フィルム層を積層した後に後加工により容易に形成することが可能である。
Therefore, in the above configuration, by forming a slit or a hole through the barrier film layer at a break line portion located in the vicinity of the base end portion of the connecting column, the slit or hole is used as a starting point along the break line. In addition, the breakage of the barrier film layer and the seal wall can proceed smoothly.
In addition, for example, a slit or pinhole that can be cut with a razor can sufficiently exert its action as a starting point of breakage, so that the reduction in barrier properties due to the formation of a slit or hole should be limited to a very small size. Is possible.
The slits or holes can be formed through the barrier film layer easily by post-processing after the barrier film layer is laminated on the seal wall.

本発明の他の構成は、上記主たる構成において、シール壁の上面側と下面側に形成した一対の溝により上下から挟むようにして破断線を形成する、と云うものである。   Another configuration of the present invention is that, in the main configuration described above, a break line is formed so as to be sandwiched from above and below by a pair of grooves formed on the upper surface side and the lower surface side of the seal wall.

上記構成によれば、プルリングによる引張り力を、連結柱を介してスリットあるいは孔が貫通形成された破断線部分に、より集中して作用させることができ、スリットあるいは孔を起点としたバリア性フィルム層とシール壁の破断をよりスムーズに進行させることが可能となる。   According to the above configuration, the tensile force generated by the pull ring can be applied more concentratedly to the break line portion through which the slit or hole is formed through the connecting column, and the barrier film starting from the slit or hole. It becomes possible to make the breakage of the layer and the seal wall proceed more smoothly.

本発明のさらに他の構成は、上記主たる構成において、バリア性フィルムをインサート材としたインサート成形により、シール壁にバリア性シート層を積層した構成とする、と云うものである。   Still another configuration of the present invention is a configuration in which a barrier sheet layer is laminated on a seal wall by insert molding using a barrier film as an insert material in the above main configuration.

上記構成によれば、インサート成形により、シール壁の下面側の破断線を含む所定領域にバリア性フィルム層を強固な接着状態で積層することが可能となる。
ここで、バリア性フィルムは、酸素バリア性、炭酸ガスバリア性、水分バリア性、有効成分の逃散抑止性等の使用目的を考慮して適宜選択することができ、
たとえば、エチレン−ビニルアルコール共重合体(EVOH)樹脂、ナイロン樹脂、ポリカーボネイト樹脂、エチレン酢酸ビニール共重合(EVA)樹脂、塩化ビニリデン樹脂、ポリエチレンテレフタレート樹脂、環状ポリオレフィン樹脂等の各種バリア性を有する合成樹脂からなるフィルムを単層フィルム、あるいはこれらの樹脂層を積層した積層フィルを使用することもできる。
さらに、アルミラミネートフィルムも使用することもできる。
According to the said structure, it becomes possible to laminate | stack a barrier film layer in the firm adhesion | attachment state by the insert molding in the predetermined area | region containing the fracture line on the lower surface side of a seal wall.
Here, the barrier film can be appropriately selected in consideration of the purpose of use such as oxygen barrier property, carbon dioxide gas barrier property, moisture barrier property, escape prevention of active ingredients,
For example, synthetic resins having various barrier properties such as ethylene-vinyl alcohol copolymer (EVOH) resin, nylon resin, polycarbonate resin, ethylene vinyl acetate copolymer (EVA) resin, vinylidene chloride resin, polyethylene terephthalate resin, and cyclic polyolefin resin. It is also possible to use a single layer film as a film made of or a laminated film in which these resin layers are laminated.
Furthermore, an aluminum laminate film can also be used.

本発明のさらに他の構成は、上記構成において、バリア性フィルム層のシール壁との接着面を構成する層を、インサート成形により熱溶着状に接着可能にシール壁と同種の合成樹脂製とする、と云うものである。   According to still another configuration of the present invention, in the above configuration, the layer constituting the adhesive surface of the barrier film layer with the seal wall is made of the same type of synthetic resin as the seal wall so that it can be bonded in a heat-welded manner by insert molding. It is said.

上記構成によれば、インサート成形によりシール壁の下面側とバリア性フィルム層を熱溶着状に接着強固することができ、バリア性フィルム層のシール壁の下面側からの部分的な剥離を防ぐことができ、剥離に起因するバリア性の低下や破断性の低下を防ぐことができる。
例えば、シール壁がLDPE樹脂製の場合は、LDPE樹脂/バリア性樹脂/PE樹脂、と云うような積層フィルムとするのが好ましい。
According to the above configuration, the lower surface side of the seal wall and the barrier film layer can be bonded and strengthened in a heat-sealed state by insert molding, and partial peeling of the barrier film layer from the lower surface side of the seal wall can be prevented. It is possible to prevent a decrease in barrier properties and a breakability due to peeling.
For example, when the seal wall is made of LDPE resin, a laminated film such as LDPE resin / barrier resin / PE resin is preferable.

また、接着面ではシール壁の下面側とバリア性フィルム層を熱溶着状に一体化できるので、バリア性フィルム層に形成したスリットや孔のノッチ効果がシール壁にも及び、バリア性フィルム層と共にシール壁自体の破断をより容易に、またスムーズに開始させることが可能となる。
また、後加工でスリットあるいは孔を貫通形成する際、スリットあるいは孔がシール壁の下面側の一部にまで及ぶようにすることも可能である。
Moreover, since the lower surface side of the seal wall and the barrier film layer can be integrated in a heat-bonded state on the adhesive surface, the slits and holes notched in the barrier film layer can also be applied to the seal wall together with the barrier film layer. It becomes possible to start the breakage of the seal wall itself more easily and smoothly.
Further, when the slit or hole is formed through the post-processing, the slit or hole may extend to a part of the lower surface side of the seal wall.

本発明のさらに他の構成は、上記主たる構成において、壜体の口筒部に組付く組付き筒を有し、組付筒の上端部から有底筒状の注出筒を起立設し、この注出筒の底壁をシール壁とした注出キャップとする、と云うものである。
Still another configuration of the present invention is the above-described main configuration, has an assembled cylinder assembled to the mouth tube portion of the housing, and erects a bottomed cylindrical pouring cylinder from the upper end portion of the assembled cylinder, It is said that a pouring cap having the bottom wall of the pouring cylinder as a seal wall is used.

本発明は、上記した構成となっているので、以下に示す効果を奏する。
すなわち本発明の主たる構成を有する合成樹脂製蓋部材にあっては、
連結柱の基端部の直近に位置する破断線部分においてバリア性フィルム層にスリットあるいは孔を貫通形成する構成とすることにより、このスリットや孔を起点として、破断線に沿ったバリア性フィルム層およびシール壁の破断をスムーズに進行させることができ、
シール壁に形成した破断線とプルリングによる開封機構において、破断線の易破断性を損なうことなく、シール壁によるバリア性の低下を効果的に抑制することができる。
なお、例えば剃刀で切込みを入れる程度のスリットやピンホール程度の孔でも破断の起点としての作用が十分に発揮されるため、スリットや孔の形成によるバリア性の低下は、極く小さく限定することができる。
Since the present invention has the above-described configuration, the following effects can be obtained.
That is, in the synthetic resin lid member having the main configuration of the present invention,
By forming a slit or a hole through the barrier film layer at the break line portion located in the vicinity of the base end portion of the connecting column, the barrier film layer along the break line starts from the slit or hole. And the breakage of the seal wall can proceed smoothly,
In the opening mechanism using the break line and the pull ring formed on the seal wall, it is possible to effectively suppress the deterioration of the barrier property due to the seal wall without impairing the easy breakability of the break line.
In addition, for example, even a slit or a pinhole that can be cut with a razor can sufficiently exert its action as a starting point of breakage. Can do.

本発明の蓋部材の一実施例である注出キャップの開姿勢状態での縦断面図である。It is a longitudinal cross-sectional view in the open posture state of the extraction | pouring cap which is one Example of the cover member of this invention. 図1の注出キャップの平面図である。It is a top view of the extraction | pouring cap of FIG. 図1中の、連結柱の基端部近傍を要部拡大して示す縦断面図である。It is a longitudinal cross-sectional view which expands and shows the principal part vicinity of the base end part of a connection pillar in FIG. 図2中の、連結柱の基端部近傍を要部拡大して示す平面図である。It is a top view which expands and shows the principal part vicinity of the base end part of a connection pillar in FIG. 図4において、バリア性フィルム層にスリットの替わりに孔を貫通形成した例を示す平面図である。In FIG. 4, it is a top view which shows the example which penetrated and formed the hole instead of the slit in the barrier film layer. 注出キャップ容器の従来例を示す開姿勢状態での縦断面図である。It is a longitudinal cross-sectional view in the open posture state which shows the conventional example of the extraction | pouring cap container. 図6の注出キャップの平面図である。It is a top view of the extraction | pouring cap of FIG.

以下、本発明の実施形態を、実施例に沿って図面を参照しながら説明する。
図1〜図4は本発明の合成樹脂製蓋部材の実施形態の一つである注出キャップの一実施例を説明するためのものであり、図1はオーバーキャップ10を開姿勢にした状態での縦断面図、図2は平面図である。
また図3は、図1中の、後述する連結柱13の基端部近傍を要部拡大して示す縦断面図、図4は、図2中の、連結柱13の基端部近傍を要部拡大して示す平面図である。なお図4では連結柱13についてはその基端部をハッチングして示している。
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described with reference to the accompanying drawings.
1-4 is for demonstrating one Example of the extraction | pouring cap which is one of the embodiments of the synthetic resin lid member of this invention, and FIG. 1 is the state which made the overcap 10 the open position. FIG. 2 is a plan view of FIG.
FIG. 3 is a longitudinal sectional view showing an enlarged vicinity of a base end portion of a connecting column 13 described later in FIG. 1, and FIG. 4 is a view of the vicinity of the base end portion of the connecting column 13 in FIG. It is a top view which expands and shows a part. In FIG. 4, the base end portion of the connecting column 13 is hatched.

この注出キャップは、キャップ本体1と、このキャップ本体1にヒンジ9を介して連接されるオーバーキャップ10から構成されており、図1ではオーバーキャップ10の一部のみ示しているが、その形状は前述した図6に示す注出キャップ101のオーバーキャップ110と同様な断面形状を有する。   The pouring cap is composed of a cap body 1 and an overcap 10 connected to the cap body 1 via a hinge 9, and only a part of the overcap 10 is shown in FIG. Has the same cross-sectional shape as the overcap 110 of the pouring cap 101 shown in FIG.

キャップ本体1は、ポリプロピレン樹脂製で、ヒンジ9を介してオーバーキャップ10を連接する外装部1aとLDPE樹脂製の中栓部1bの二つ射出成形品を嵌合して構成されている。
この中、外装部1aは、図1に二点鎖線で示した壜体31の口筒部32に外嵌係合する組付き筒2を有し、この組付き筒2の上端縁から内鍔状の頂板2tを介して上端部をラッパ状に広げた注出筒4を起立設し、この注出筒4を下方に延長した形態で頂板2tの内周端縁から嵌着筒3を垂下設し、さらに注出筒4の内周面下端縁から係止フランジ片5を突周設した構成を有する。
なお、本実施例では注出キャップ1を上記したように外装部1aと中栓部1bの2つの部材を嵌合して構成しているが、勿論、2つの部材の射出成形や嵌合工程に係る生産性等を考慮して、注出キャップを一体的に射出成形した部材とすることができる。
The cap body 1 is made of polypropylene resin, and is configured by fitting two injection-molded products, that is, an exterior portion 1a connecting the overcap 10 via a hinge 9 and an LDPE resin inner plug portion 1b.
In this, the exterior part 1a has the assembly cylinder 2 which carries out external fitting engagement with the mouth cylinder part 32 of the housing 31 shown with the dashed-two dotted line in FIG. A pour cylinder 4 having an upper end spread in a trumpet shape is erected through a top plate 2t, and the fitting cylinder 3 is suspended from the inner peripheral edge of the top plate 2t in a form extending the pour pipe 4 downward. Furthermore, it has a configuration in which a locking flange piece 5 protrudes from the lower end edge of the inner peripheral surface of the dispensing cylinder 4.
In the present embodiment, the dispensing cap 1 is constructed by fitting the two members of the exterior part 1a and the inner plug part 1b as described above, but of course, the injection molding and fitting process of the two members In consideration of the productivity and the like, the dispensing cap can be an integrally injection-molded member.

一方、中栓部1bは、壜体31の開口部を覆う平坦板状のシール壁6の周端縁から内筒8を垂下設し、この内筒8の下端縁から外鍔周片を介して外筒7を反転立設した構成を有し、外筒7と内筒8の間に嵌着筒3を密にかつ強固に嵌入し、シール壁6の周端部上面を係止フランジ片5の下面に当接させて、上記した外装部1aと中栓部1bを嵌合する。
そして、図1に示すように外装部1aと中栓部1bを嵌合してキャップ本体1が構成されるが、このキャップ本体1では中栓部1bのシール壁6は注出筒4の底壁6aを形成する。
On the other hand, the inner plug portion 1b has an inner cylinder 8 suspended from the peripheral edge of the flat plate-like seal wall 6 that covers the opening of the casing 31, and the inner cylinder 8 is routed from the lower edge of the inner cylinder 8 through an outer flange peripheral piece. The outer cylinder 7 is inverted and erected, the fitting cylinder 3 is closely and firmly inserted between the outer cylinder 7 and the inner cylinder 8, and the upper surface of the peripheral end portion of the seal wall 6 is a locking flange piece. 5 is brought into contact with the lower surface of 5 and the above-described exterior portion 1a and the inner plug portion 1b are fitted.
As shown in FIG. 1, the cap body 1 is configured by fitting the exterior portion 1 a and the inner plug portion 1 b, and in this cap body 1, the seal wall 6 of the inner plug portion 1 b is the bottom of the dispensing tube 4. A wall 6a is formed.

また、シール壁6には薄肉に形成した破断線Lbにより囲成して除去板部12が規定され、この除去板部12の外周縁部(図1、2では除去板部12の右側端部)を基端として上方に延びる連結柱13を起立設し、この連結柱13を介して除去板部12に接続されるプルリング14を備えており、
これら破断線Lbとプルリング14によりこの注出キャップの開封機構が構成される。
Further, the removal wall 12 is defined on the seal wall 6 by being surrounded by a thin break line Lb. The outer peripheral edge of the removal wall 12 (the right end of the removal wall 12 in FIGS. 1 and 2). ) And a pull ring 14 connected to the removal plate portion 12 via the connection column 13.
The breaking line Lb and the pull ring 14 constitute an opening mechanism for the dispensing cap.

また、シール壁6の下面側には、バリア性フィルムをインサート材とした中栓部1bの射出成形により、破断線Lbを含む略全領域にバリア性フィルム層15が積層されている。このバリア性フィルム層15は、図3中の拡大図に示されように、EVOH樹脂層15bをLDPE樹脂層15a、15cでサンドイッチ状に挟んだ積層構造を有し、EVOH樹脂層15bにより高度な酸素バリア性が発揮される。
また、インサート成形によりバリア性フィルム層15はLDPE樹脂層15aを介して、同様にLDPE樹脂製である中栓部1bのシール壁6に、強固に、また破断線Lbの凹状の断面形状に沿って積層されている。
Further, on the lower surface side of the seal wall 6, the barrier film layer 15 is laminated in substantially the entire region including the breaking line Lb by injection molding of the inner plug portion 1 b using the barrier film as an insert material. As shown in the enlarged view of FIG. 3, the barrier film layer 15 has a laminated structure in which the EVOH resin layer 15b is sandwiched between the LDPE resin layers 15a and 15c, and the EVOH resin layer 15b has a more advanced structure. Oxygen barrier properties are exhibited.
Further, the barrier film layer 15 is firmly formed on the sealing wall 6 of the inner plug portion 1b made of LDPE resin through the LDPE resin layer 15a by insert molding, and along the concave cross-sectional shape of the breaking line Lb. Are stacked.

図3の要部を拡大した断面図にも見られるように、本実施例では破断線Lbは上面側の溝11tと下面側の溝11uにより上下から挟むようにして形成されている。このように破断線Lbを形成することにより、プルリング14による引張り力を、薄肉に形成された破断線Lb部分に、より集中して作用させることができる。   As can be seen in the enlarged cross-sectional view of the main part of FIG. 3, in this embodiment, the breaking line Lb is formed so as to be sandwiched from above and below by the upper surface side groove 11t and the lower surface side groove 11u. By forming the break line Lb in this way, the tensile force due to the pull ring 14 can be applied more concentratedly to the break line Lb portion formed thin.

また、図3に示されるように連結柱13の基端部の外周縁側直近に位置する破断線Lb部分において、積層するバリア性フィルム層15には、シール壁6の下面側に達するスリットS1が破断線Lbに沿って(図4も参照)貫通形成されている。
さらに詳述すると、スリットS1は上記した下面側の溝11uの底面に積層するバリア性フィルム層15に形成されている。
このスリットS1はインサート成形により中栓部1bを射出成形した後、後加工により剃刀状の鋭利な刃先を有する治具で形成したものである。
Further, as shown in FIG. 3, the slit S1 reaching the lower surface side of the seal wall 6 is formed in the barrier film layer 15 to be laminated in the portion of the breaking line Lb located in the immediate vicinity of the outer peripheral edge side of the base end portion of the connecting column 13. A penetration is formed along the breaking line Lb (see also FIG. 4).
More specifically, the slit S1 is formed in the barrier film layer 15 laminated on the bottom surface of the groove 11u on the lower surface side.
The slit S1 is formed by a jig having a razor-shaped sharp edge by post-processing after the inner plug portion 1b is injection-molded by insert molding.

そして、上記説明した構成を有する本実施例の注出キャップについて、開封のためにプルリング14を上方に引っ張ると、積層するバリア性フィルム層15と共に破断線Lbに沿ったシール壁6の破断をスムーズに進行させることができ、除去板部12を除去する開封操作を容易に達成することができた。
ここで、バリア性フィルム層15についてその破断の態様を観察すると、延伸変形することなくスリットS1を起点としてスムーズに引裂き状に破断が進行しており、開口縁部にバリ等の発生もなく、内容液をスムーズに注出することができた。
When the pull ring 14 of the present embodiment having the above-described configuration is pulled upward for unsealing, the sealing wall 6 along the breaking line Lb is smoothly broken together with the barrier film layer 15 to be laminated. The opening operation for removing the removal plate portion 12 could be easily achieved.
Here, when observing the mode of breakage of the barrier film layer 15, the breakage progressed smoothly in a tearing manner from the slit S1 without stretching and deformation, and there was no occurrence of burrs or the like at the opening edge, The content liquid could be poured out smoothly.

ここで、本実施例の注出キャップと同様な構成でスリットS1を形成しない注出キャップを用意し、同様にプルリング14を上方に引っ張って開封する試験を実施したが、
バリア性フィルム層15が延伸変形し、破断のためにかなりの力を必要とした。また、破断線Lbに沿ってバリア性フィルム層15共にシール壁6を破断できたとしても、開口縁部にバリア性フィルム層15の延伸状に破断した部分がバリとしてはみ出すため、内容液を注出する際このバリが邪魔になって、注出方向が定まらない、液切れが悪い等の問題が生じた。
Here, an extraction cap that does not form the slit S1 with the same configuration as the extraction cap of the present embodiment was prepared, and similarly, a test was performed to open the pull ring 14 by pulling upward.
The barrier film layer 15 was stretched and deformed and required a considerable force for breaking. In addition, even if the barrier wall layer 15 can be broken along the breaking line Lb, the stretched portion of the barrier film layer 15 protrudes as a burr at the opening edge, so that the content liquid is poured. This burr became a hindrance when taking out, causing problems such as unsettled pouring direction and poor drainage.

以上、実施例に沿って本発明の合成樹脂製蓋部材の実施の形態、およびその作用効果を説明したが、本発明は上記実施例に限定されるものではない。
たとえば、本発明の蓋部材は上記説明したような注出キャップに限定されることなく、一般的なキャップ体、中栓体、蓋体等、容器の開口部を密に覆う蓋部材とすることができる。
また、実施例で説明した注出キャップ体についても、たとえば実施例ではキャップ本体を外装部と中栓部の2つの部材からなるものとしたが前述したように生産性等を考慮して1つの部材とすることもでき、その形状についても様々なバリエーションとすることができる。
As mentioned above, although embodiment of the synthetic resin lid member of the present invention and its operation effect were explained along with the example, the present invention is not limited to the above example.
For example, the lid member of the present invention is not limited to the extraction cap as described above, but a lid member that covers the opening of a container such as a general cap body, an inner plug body, and a lid body. Can do.
In addition, with regard to the dispensing cap body described in the embodiment, for example, in the embodiment, the cap main body is composed of two members, the exterior portion and the inner plug portion. It can also be used as a member, and the shape thereof can be variously changed.

バリア性フィルム層については、上記実施例では酸素バリア性を考慮して中間層にEVOH樹脂層を有する積層フィルムを採用したが、
勿論、遮断すべきガスの種類や、有効成分の逃散抑止性等、容器の使用目的を考慮して、バリア層を形成する合成樹脂を適宜選択することができ、バリア性を有する樹脂製の単層フィルムとすることもできるし、積層フィルムとすることもできる。
また、上記実施例ではバリア性フィルムをインサート材とした射出成形によりバリア性フィルム層を積層する例を説明したが、勿論、別工程で積層することもできる。
For the barrier film layer, in the above examples, a laminated film having an EVOH resin layer as an intermediate layer was employed in consideration of oxygen barrier properties.
Of course, the synthetic resin for forming the barrier layer can be appropriately selected in consideration of the purpose of use of the container, such as the type of gas to be blocked and the ability to prevent escape of active ingredients. It can also be a layer film or a laminated film.
Moreover, although the example which laminates | stacks a barrier film layer by the injection molding which used the barrier film as an insert material was demonstrated in the said Example, of course, it can also laminate | stack by another process.

また、上記実施例ではバリア性フィルム層の破断の起点として、スリットを破断線Lbに沿って貫通形成した例を説明したが、連結柱の基端部での力の作用する方向や、破断の起点としての作用効果を考慮してスリットの形状や延設方向を選択することができるし、図5に示されるように孔S2とすることもできる。
このように孔S2とする場合にも、ピンホールのように極く小さなものでも破断の起点としての機能を発揮させることができる。
Further, in the above embodiment, the example in which the slit is formed through the breaking line Lb as the starting point of the breaking of the barrier film layer has been described, but the direction in which the force acts at the base end portion of the connecting column, The shape and extending direction of the slit can be selected in consideration of the function and effect as the starting point, or the hole S2 can be formed as shown in FIG.
Even when the hole S2 is formed as described above, even a very small one such as a pinhole can function as a starting point of fracture.

以上説明したように、本発明の合成樹脂製蓋部材は、破断線とプルリングによる開封機構における破断線の易破断性を損なうことなく、シール壁によるバリア性の低下を効果的に抑制できるものであり、高い酸素バリア性や、有効成分の逃散を抑制することが必要な用途に使用する容器の蓋部材として幅広い使用展開が期待される。
As described above, the synthetic resin lid member of the present invention can effectively suppress the deterioration of the barrier property due to the seal wall without impairing the easy breakability of the break line in the opening mechanism by the break line and the pull ring. It is expected to be widely used as a lid member for containers used for applications that require high oxygen barrier properties and suppression of escape of active ingredients.

1 ;キャップ本体
1a;外装部
1b;中栓部
2 ;組付き筒
2t;頂板
3 ;嵌着筒
4 ;注出筒
5 ;係止フランジ
6 ;シール壁
6a;底壁
7 ;外筒片
8 ;内筒片
9 ;ヒンジ
10:オーバーキャップ
11t;(上面側の)溝
11u;(下面側の)溝
12;除去板部
13;連結柱
14;プルリング
15;バリア性フィルム層
Lb;破断線
S1;スリット
S2;孔
31;壜体
32;口筒部
101;キャップ本体
101a;外装部
101b;中栓部
102;組付き筒
104;注出筒
106;シール壁
109;ヒンジ
110;オーバーキャップ
112;除去板部
113;連結柱
114;プルリング

DESCRIPTION OF SYMBOLS 1; Cap main body 1a; Exterior part 1b; Inner plug part 2; Assembly cylinder 2t; Top plate 3; Insertion cylinder 4; Outlet cylinder 5; Locking flange 6; Seal wall 6a; Inner cylinder piece 9; hinge 10: overcap 11t; groove 11u (upper surface side); groove 12 (lower surface side); removal plate portion 13; connecting post 14; pull ring
15; barrier film layer Lb; breaking line S1; slit S2; hole 31; housing 32; mouth tube portion 101; cap body 101a; exterior portion 101b; Seal wall 109; hinge 110; overcap 112; removal plate portion 113; connecting post 114; pull ring

Claims (5)

容器の開口部を密に覆う合成樹脂製蓋部材であり、前記開口部を覆うと共に破断可能に薄肉に形成した破断線(Lb)により囲成して除去板部(12)が規定されるシール壁(6)と、前記除去板部(12)の外周縁部を基端として上方に延びる連結柱(13)を介して該除去板部(12)に接続されたプルリング(14)とを備え、前記シール壁(6)の下面側に、前記破断線(Lb)を含む領域を被覆するようにバリア性フィルム層(15)を積層し、前記連結柱(13)の基端部の直近に位置する破断線(Lb)部分において前記バリア性フィルム層(15)にスリット(S1)、あるいは孔(S2)を貫通形成する構成としたことを特徴とする合成樹脂製蓋部材。 A synthetic resin lid member that tightly covers the opening of the container, and a seal that covers the opening and that is surrounded by a rupture line (Lb) that is thin enough to be ruptured to define the removal plate (12) A wall (6), and a pull ring (14) connected to the removal plate portion (12) via a connecting column (13) extending upward with the outer peripheral edge of the removal plate portion (12) as a base end. The barrier film layer (15) is laminated on the lower surface side of the seal wall (6) so as to cover the region including the break line (Lb), and is in the immediate vicinity of the base end portion of the connecting column (13). A synthetic resin lid member having a structure in which a slit (S1) or a hole (S2) is formed through the barrier film layer (15) in a portion of the breaking line (Lb) positioned. シール壁(6)の上面側と下面側に形成した一対の溝(11t、11u)により上下から挟むようにして破断線(Lb)を形成した請求項1記載の合成樹脂製蓋部材。 The synthetic resin lid member according to claim 1, wherein a breaking line (Lb) is formed so as to be sandwiched from above and below by a pair of grooves (11t, 11u) formed on the upper surface side and the lower surface side of the seal wall (6). バリア性フィルムをインサート材としたインサート成形により、シール壁(6)にバリア性シート層(15)を積層した請求項1または2記載の合成樹脂製容器蓋。 The synthetic resin container lid according to claim 1 or 2, wherein the barrier sheet layer (15) is laminated on the seal wall (6) by insert molding using a barrier film as an insert material. バリア性フィルム層(15)の、シール壁(6)との接着面を構成する層を、インサート成形により熱溶着状に接着可能にシール壁(6)と同種の合成樹脂製とした請求項3記載の合成樹脂製蓋部材。 The layer constituting the adhesive surface of the barrier film layer (15) with the seal wall (6) is made of the same kind of synthetic resin as the seal wall (6) so that it can be bonded in a heat-welded manner by insert molding. The synthetic resin lid member described. 壜体の口筒部に組付く組付き筒(2)を有し、該組付筒(2)の上端部から有底筒状の注出筒(4) を起立設し、該注出筒(4)の底壁(6a)をシール壁(6)とした注出キャップである請求項1、2、3または4記載の合成樹脂製蓋部材。


It has an assembly cylinder (2) to be assembled to the mouth tube section of the housing, and a bottomed cylindrical extraction cylinder (4) is erected from the upper end of the assembly cylinder (2), and the extraction cylinder The synthetic resin lid member according to claim 1, 2, 3, or 4, which is a pouring cap having the bottom wall (6a) of (4) as a seal wall (6).


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JP2015044621A (en) * 2013-08-29 2015-03-12 押尾産業株式会社 Spouting tool
JP2015227194A (en) * 2014-05-30 2015-12-17 株式会社吉野工業所 Spouting cap
JP2016124550A (en) * 2014-12-26 2016-07-11 株式会社吉野工業所 Spouting cap having barrier layer
JP2017013821A (en) * 2015-06-30 2017-01-19 株式会社吉野工業所 Spout cap equipped with film
JP2018171817A (en) * 2017-03-31 2018-11-08 株式会社吉野工業所 Method for manufacturing lid member made of synthetic resin, and lid member made of synthetic resin
TWI689449B (en) * 2019-06-20 2020-04-01 尚墩股份有限公司 Container opening identification structure with non-equal configuration pre-breaking line

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