JP4281265B2

JP4281265B2 - Pouring cap

Info

Publication number: JP4281265B2
Application number: JP2001198211A
Authority: JP
Inventors: 辰男椿
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 2001-06-29
Filing date: 2001-06-29
Publication date: 2009-06-17
Anticipated expiration: 2021-06-29
Also published as: JP2003012011A

Description

【０００１】
【発明の属する技術分野】
本発明は、定形の外殻を形成する外層内に、変形自在な内袋を形成する内層を剥離自在に積層して構成した合成樹脂製壜体の口部に組付けて使用される注出キャップに関するものである。
【０００２】
【従来の技術】
定形の外殻を形成する外層内に、変形自在な内袋を形成する内層を剥離自在に積層して構成し、この内層内に外気が入らないようにして嫌気性内容液を収納する合成樹脂製ブロー成形壜体が知られている。
【０００３】
この壜体の口部には、通常、注出キャップとしてポンプ付きキャップが組付けてあり、ポンプを押圧操作することにより、内層内の内容液が注出されると共に、内層が減容化変形するように構成されている。
【０００４】
【発明が解決しようとする課題】
ところで、最近、この種の２層構造の壜体をスクイズ容器に形成して食品用容器として使用することが考えられているが、その場合、内容液の注出は、ポンプ付きキャップのポンプ操作ではなく、壜体胴部のスクイズ操作によることとなるため、従来のポンプ付きキャップに代る新たな注出キャップが必要とされる。
【０００５】
そこで、本発明は、上記課題に鑑みて創案されたもので、定形の外殻を形成し、かつスクイズ性を有する外層と、変形自在な内袋を形成する内層とから構成される２層構造の壜体に、良好に適合する注出キャップを提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記技術的課題を解決する本発明の内、請求項１記載の発明の手段は、
定形の外殻を形成し、かつスクイズ性を有する合成樹脂製の外層と、この外層に剥離自在に積層され、内袋を形成する可撓性合成樹脂製の内層とで構成し、胴部上端に起立連設された円筒状の口部の外層口部部分に、外層と内層との間に外気を侵入させる吸気口を開設した壜体の口部に組付く注出キャップであること、
壜体の外層の吸気口よりも下位の部分に密接するシール条を内周面に突周設し、口部の外周に螺合する組付き筒の上端内方に、頂壁を介して螺筒を立設すると共に、この螺筒の内方に、通気口を開設した上端部のフランジ壁を介して注出筒を連設し、この注出筒の内方に注出口を、外方の螺筒との間に通気路をそれぞれ形成したキャップ本体を有すること、
キャップ本体の注出筒の下端部と、組付き筒の内周面上端部とに密接してキャップ本体に内装され、中央に開口部を、周縁部に通気孔をそれぞれ開設し、壜体の口部に密に嵌入組付けされた中栓体の筒壁の上端面に密接するシール体を有すること、
キャップ本体の開口部の上端に配設された逆止弁である注出弁を有すること、
キャップ本体の通気路の下端に配設された逆止弁である吸気弁を有すること、
キャップ本体の螺筒の外周に螺合組付けされ、注出口を開閉する上キャップを有すること、
にある。
【０００７】
注出キャップを壜体口部に組付けると、組付き筒の内部は、吸気弁、シール体、シール条により密閉され、かつ吸気口を介して外層と内層の間に連通する。
【０００８】
内容液の注出に際して、上キャップを取外して壜体を傾け、その胴部を押圧すると、内容液の液圧により注出弁が開いて注出口から内容液が注出され、次いで胴部の押圧を解放すると、スクイズ性の外層が原形に復帰しようとするため、この外層と、減容化変形した内層との間に負圧が発生する。
【０００９】
この負圧により吸気弁が開くため、外気が、通気口からキャップ本体内の通気路に侵入し、吸気弁からシール体の通気孔を通り、さらに組付き筒の螺条と口部の螺条との間を通って、吸気口から外層と内層との間に侵入するため、外層と内層との剥離が進行すると共に、外層の原形への復帰が円滑にかつ迅速に達成される。
【００１０】
請求項２記載の発明は、請求項１記載の発明の構成に、壜体の口部に、上端開口部を、易剥離性のシール片で接着密閉した中栓体を密に嵌入組付けした構成において、中栓体の上端面に対向するシール体の下面箇所に、中栓体の上端面に密接するシール突条を突周設した、ことを加えたものである。
【００１１】
この請求項２記載の発明にあっては、バージンシールを兼ねたシール片の剥離除去後における、壜体の注出キャップによる密閉保持を、強固にかつ確実に達成できることになる。
【００１２】
【発明の実施の形態】
以下、本発明の一実施例を、図面を参照しながら説明する。
本発明に係る注出キャップ２０が組み付けられる壜体１は、定形の外殻を形成し、かつスクイズ性を有するポリエチレン製の外層３と、変形自在な内袋を形成するナイロン製の内層４と、接着性樹脂製の一対の接着帯５（図４参照）とを、共押出し成形手段により積層円筒状に押出し成形したパリソンからブロー成形された壜本体２と、この壜本体２の口部６に密に嵌入組付けされる中栓体１１と、から構成されている。
【００１３】
壜本体２の口部６を構成する外層口部部分７には、注出キャップ２０を螺合組付けするための螺条８が外周面に刻設されていると共に、その下方の接着帯５を避けた位置に、外層３と内層４との間に外気を侵入させるための吸気口９が開設してあり、また段状に形成された上端面には、内層４の上端部分１０が積層状に位置している。
【００１４】
外層３と内層４との一部を接着固定する一対の接着帯５は、壜本体２の対称位置に、全高さ範囲に亘って比較的幅広に形成されており、これにより内層４の減容化変形を、偏平に潰れる略一定した形態で進行させることができると共に、各接着帯５の側近内方に内容液の通路１６が確保される（図４参照）。
【００１５】
軟質ポリエチレン樹脂製の中栓体１１は、口部６に密嵌入する筒壁１２の外周面上端部に、下面が口部６の上端面に当接して、内層４の上端部分１０を外層３の上端面との間で強固に挟持固定する外フランジ１３を周設すると共に、筒壁１２の下端部内に、その下部分を下方に突出させた、十字形の交叉板１４（図３参照）を架設して構成されている。
【００１６】
また、筒壁１２の上端面には、内容液充填後、アルミ箔を主体とする円形のシール片１５の下面周縁部を、高周波シール等により剥離可能に接着して、壜体１を密封する。
【００１７】
なお、交叉板１４を設けたことにより、内容液の注出使用により減容化変形した内層４の一部が筒壁１２内、すなわち口部６内に侵入することを防止でき、もって筒壁１２が内層４により塞がれると云うことがなく、内容液の通路が常に確保される。
【００１８】
本発明に係る注出キャップ２０は、注出口３１を有し壜本体２の口部６に組付くキャップ本体２１と、このキャップ本体２１に内装されたシール体３５と、注出口３１を開閉する上キャップ４４と、から構成されている。
【００１９】
キャップ本体２１は、外層口部部分７の螺条８に螺合する螺条２３を内周面に刻設し、かつ外層３に密接するシール条２４を、内周面下端部に突周設した組付き筒２２の上端内方に、内鍔状の頂壁２５を介して、外周面に螺条２７を刻設した螺筒２６を立設すると共に、この螺筒２６の内方に、複数の通気口２９を開設した上端のフランジ壁２８を介して注出筒３０を連設し、この注出筒３０の内方に注出口３１を、外方の螺筒２６との間に通気路３４を、それぞれ形成して構成されている。
【００２０】
キャップ本体２１の注出筒３０の外周面下端部は、段部を介して縮径し、また、下端部内には、連結部３３を介して注出弁３２が配設されている。
【００２１】
キャップ本体２１の注出弁３２により開閉される開口部３６を中央に開設したシール体３５は、注出筒３０の下端部が嵌合する係合溝３７を上面に周設すると共に、その外方に内筒片３８を立設し、下面には、前記中栓体１１の筒壁１２の上端面に密接するシール突条３９を突周設すると共に、その外方に筒壁１２の上端部に外嵌する嵌合筒片４０を垂下設し、また周縁に、組付き筒２２と頂壁２５の各内面に密接し、かつ複数の通気孔４２が開設された外筒片４１を連設して構成されている。
【００２２】
また、シール体３５の上方には、基端部を内筒片３８の上端面と注出筒３０の段部とにより挟持固定され、先端部上面が頂壁２５の下面に密接して通気路３４を開閉するリング状の吸気弁４３が配設されている。
【００２３】
上キャップ４４は、周壁の内周面に、キャップ本体２１の螺条２７に螺合する螺条４５を刻設すると共に、頂壁の下面に、注出筒３０の上端部に密嵌入する栓筒片４６と密外嵌するシール筒片４７とをそれぞれ垂下設して構成されている。
【００２４】
壜体１は、消費者が購入するまでは、シール片１５でその密封を確保した状態で、注出キャップ２０を組付けた構成となっており、この構成では、シール片１５による優れたシール性が効果的に発揮されると共に、機械的強度が決して充分ではないシール片１５を、注出キャップ２０が保護している。
【００２５】
シール片１５を剥離除去した後は、シール体３５のシール突条３９が、中栓体１１の上端面に密接して、壜体１に対するキャップ本体２１の密な組付きを確保するので、壜体１の開閉はキャップ本体２１に対する上キャップ４４の着脱により、支障なく達成される。
【００２６】
【発明の効果】
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。
請求項1記載の発明にあっては、この種の２層構造で、かつスクイズ性の壜体に組み付けて使用することにより、この壜体のスクイズ操作による内容液の注出、およびその後の、外層の原形への復帰を、円滑にかつ確実に達成することができ、もって良好な使用状態を得ることができる。
【００２７】
請求項２記載の発明にあっては、シール片を設けることにより、開封前の壜体の密封を確保した壜体に対し、シール片の剥離除去後も、壜体の密閉を安定的に確保して、壜体の安全な使用状態を得ることができる。
【図面の簡単な説明】
【図１】本発明の一実施例を示す、壜体に組付けた状態の半縦断正面図。
【図２】図１に示した実施例の、要部拡大半縦断面図。
【図３】図１に示した実施例における、中栓体の平面図。
【図４】図１中、Ａ−Ａ線断面図。
【符号の説明】
１；壜体
２；壜本体
３；外層
４；内層
５；接着帯
６；口部
７；外層口部部分
８；螺条
９；吸気口
１０；上端部分
１１；中栓体
１２；筒壁
１３；外フランジ
１４；交叉板
１５；シール片
１６；通路
２０；注出キャップ
２１；キャップ本体
２２；組付き筒
２３；螺条
２４；シール条
２５；頂壁
２６；螺筒
２７；螺条
２８；フランジ壁
２９；通気口
３０；注出筒
３１；注出口
３２；注出弁
３３；連結部
３４；通気路
３５；シール体
３６；開口部
３７；係合溝
３８；内筒片
３９；シール突条
４０；嵌合筒片
４１；外筒片
４２；通気孔
４３；吸気弁
４４；上キャップ
４５：螺条
４６；栓筒片
４７；シール筒片[0001]
BACKGROUND OF THE INVENTION
INDUSTRIAL APPLICABILITY The present invention is a pour-out that is used by assembling it in the mouth of a synthetic resin casing formed by detachably laminating an inner layer forming a deformable inner bag in an outer layer forming a fixed outer shell. It is about the cap.
[0002]
[Prior art]
Synthetic resin that contains an anaerobic content liquid in which the inner layer that forms a deformable inner bag is peelably laminated within the outer layer that forms a fixed outer shell, and the outside air does not enter the inner layer Blow molded housings are known.
[0003]
Usually, a cap with a pump is assembled as a pouring cap at the mouth of the housing. By pressing the pump, the content liquid in the inner layer is poured out and the inner layer is reduced in volume and deformed. It is configured as follows.
[0004]
[Problems to be solved by the invention]
By the way, recently, it has been considered that this type of two-layered housing is formed in a squeeze container and used as a food container. However, since it is based on the squeeze operation of the housing body, a new pouring cap is required in place of the conventional cap with a pump.
[0005]
Accordingly, the present invention has been made in view of the above problems, and has a two-layer structure including an outer layer that forms a fixed outer shell and has squeeze properties, and an inner layer that forms a deformable inner bag. An object of the present invention is to provide a pouring cap that fits well to the housing.
[0006]
[Means for Solving the Problems]
Among the present invention for solving the above technical problems, the means of the invention according to claim 1 is:
Consists of an outer layer made of synthetic resin that forms a regular outer shell and has squeeze properties, and an inner layer made of flexible synthetic resin that is detachably laminated on the outer layer to form an inner bag. A pouring cap that is assembled to the mouth of the housing in which an air inlet that allows outside air to enter between the outer layer and the inner layer is formed in the outer layer mouth portion of the cylindrical mouth portion that is erected and
A seal strip that is in close contact with the lower portion of the outer layer of the housing is provided on the inner peripheral surface, and is threaded through the top wall to the inside of the upper end of the assembled cylinder that is screwed to the outer periphery of the mouth portion. In addition to erecting the cylinder, an extraction cylinder is connected to the inside of the screw cylinder via the flange wall at the upper end where the vent is opened, and an outlet is provided inside the extraction cylinder. Having a cap body formed with a ventilation path between the screw cylinder and
The cap body is in close contact with the lower end of the dispensing cylinder and the upper end of the inner peripheral surface of the assembled cylinder, and an opening is formed in the center and a vent hole is formed in the peripheral part . Having a sealing body that is in close contact with the upper end surface of the cylindrical wall of the inner plug body that is closely fitted into the mouth portion ;
Having a dispensing valve which is a check valve disposed at the upper end of the opening of the cap body;
Having an intake valve which is a check valve disposed at the lower end of the vent passage of the cap body;
Having an upper cap that is screwed and assembled to the outer periphery of the screw cylinder of the cap body and opens and closes the spout;
It is in.
[0007]
When the dispensing cap is assembled to the housing opening, the inside of the assembled cylinder is sealed by an intake valve, a seal body, and a seal strip, and communicates between the outer layer and the inner layer via the intake.
[0008]
When the content liquid is poured out, the top cap is removed, the housing is tilted, and the barrel is pressed. The dispensing valve opens due to the fluid pressure of the content fluid, and the content liquid is poured out from the spout. When the pressure is released, the squeezed outer layer tends to return to its original shape, and a negative pressure is generated between the outer layer and the inner layer that has undergone volume reduction.
[0009]
Since the intake valve is opened by this negative pressure, outside air enters the air passage in the cap body from the air vent, passes through the air vent of the seal body from the air intake valve, and further, the thread of the assembly cylinder and the thread of the mouth Between the outer layer and the inner layer through the air inlet, the separation between the outer layer and the inner layer proceeds, and the return to the original shape of the outer layer is achieved smoothly and quickly.
[0010]
According to the second aspect of the present invention, in the structure of the first aspect of the present invention, the inner plug body in which the upper end opening is bonded and sealed with an easily peelable seal piece is closely fitted and assembled to the mouth of the housing. In the configuration, a seal protrusion that is in close contact with the upper end surface of the inner plug body is provided on the lower surface portion of the seal body that faces the upper end surface of the inner plug body.
[0011]
In the invention according to the second aspect, it is possible to firmly and reliably achieve the hermetic holding by the pouring cap of the housing after the peeling and removal of the sealing piece also serving as the virgin seal.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The casing 1 to which the pouring cap 20 according to the present invention is assembled includes a polyethylene outer layer 3 that forms a fixed outer shell and has squeeze properties, and a nylon inner layer 4 that forms a deformable inner bag. A pair of adhesive bands 5 (see FIG. 4) made of adhesive resin is blown from a parison obtained by extruding into a laminated cylindrical shape by coextrusion molding means, and a mouth portion 6 of this bowl body 2 And an inner plug body 11 which is closely fitted and assembled.
[0013]
A thread 8 for screwing and assembling the dispensing cap 20 is engraved on the outer peripheral surface of the outer layer mouth portion 7 constituting the mouth portion 6 of the main body 2, and an adhesive band 5 below the outer surface. The air inlet 9 for allowing the outside air to enter between the outer layer 3 and the inner layer 4 is opened at a position avoiding the above, and the upper end portion 10 of the inner layer 4 is laminated on the upper end surface formed in a step shape. It is located in the shape.
[0014]
The pair of adhesive bands 5 for bonding and fixing a part of the outer layer 3 and the inner layer 4 are formed relatively wide over the entire height range at the symmetrical position of the heel body 2, thereby reducing the volume of the inner layer 4. The deformation can be advanced in a substantially constant form that is flattened, and a content liquid passage 16 is secured inward and inward of each adhesive band 5 (see FIG. 4).
[0015]
The inner plug body 11 made of a soft polyethylene resin has an upper end portion of the outer peripheral surface of the cylindrical wall 12 that is tightly fitted in the mouth portion 6, and a lower surface abutting on the upper end surface of the mouth portion 6, so that the upper end portion 10 of the inner layer 4 is connected to the outer layer 3. A cross-shaped crossing plate 14 (see FIG. 3) having an outer flange 13 firmly sandwiched between the upper end surface of the tube wall and a lower portion protruding downward in the lower end portion of the cylindrical wall 12 Is constructed.
[0016]
Also, after filling the content liquid, the lower peripheral edge of the circular seal piece 15 mainly made of aluminum foil is adhered to the upper end surface of the cylindrical wall 12 so as to be peelable by a high-frequency seal or the like, thereby sealing the housing 1. .
[0017]
By providing the crossing plate 14, it is possible to prevent a part of the inner layer 4 that has been volume-reduced and deformed by pouring and using the content liquid from entering the cylindrical wall 12, that is, the mouth portion 6. 12 is not blocked by the inner layer 4, and the passage of the content liquid is always secured.
[0018]
The pouring cap 20 according to the present invention opens and closes the cap main body 21 that has the spout 31 and is assembled to the mouth portion 6 of the bag main body 2, the seal body 35 that is built in the cap main body 21, and the spout 31. And an upper cap 44.
[0019]
The cap body 21 has a thread 23 which is screwed into the thread 8 of the outer layer mouth portion 7 on the inner peripheral surface, and a seal strip 24 which is in close contact with the outer layer 3 is provided on the lower end of the inner peripheral surface. A screw tube 26 having a thread 27 engraved on its outer peripheral surface is erected on the inner side of the upper end of the assembled tube 22 via an inner flange-shaped top wall 25. A pouring cylinder 30 is continuously provided through a flange wall 28 at the upper end where a plurality of vent holes 29 are opened, and the pouring port 31 is vented between the pouring cylinder 30 and the outer screw cylinder 26. Each path 34 is formed and configured.
[0020]
The lower end portion of the outer peripheral surface of the pouring cylinder 30 of the cap body 21 is reduced in diameter via a step portion, and the pouring valve 32 is disposed in the lower end portion via a connecting portion 33.
[0021]
The sealing body 35 having an opening 36 opened and closed by the pouring valve 32 of the cap body 21 in the center has an engaging groove 37 in which the lower end of the pouring cylinder 30 is fitted on the upper surface, and the outside thereof. An inner cylinder piece 38 is erected on the side, and a seal protrusion 39 is provided on the lower surface so as to be in close contact with the upper end surface of the cylinder wall 12 of the inner plug body 11, and the upper end of the cylinder wall 12 is provided on the outer side. A fitting cylinder piece 40 that is externally fitted to the section is suspended, and an outer cylinder piece 41 that is in close contact with the inner surfaces of the assembled cylinder 22 and the top wall 25 and has a plurality of vent holes 42 is connected to the periphery. It is configured.
[0022]
In addition, the base end portion is sandwiched and fixed above the seal body 35 by the upper end surface of the inner cylinder piece 38 and the stepped portion of the extraction cylinder 30, and the top surface of the distal end portion is in close contact with the lower surface of the top wall 25 and the air passage. A ring-shaped intake valve 43 that opens and closes 34 is disposed.
[0023]
The upper cap 44 is provided with a screw 45 that is threadedly engaged with the screw 27 of the cap main body 21 on the inner peripheral surface of the peripheral wall, and a stopper that fits tightly into the upper end of the dispensing tube 30 on the lower surface of the top wall. A cylindrical piece 46 and a sealed cylindrical piece 47 that is tightly fitted are respectively suspended and configured.
[0024]
The casing 1 has a structure in which the pouring cap 20 is assembled in a state in which the seal is secured by the seal piece 15 until the consumer purchases. The pouring cap 20 protects the sealing piece 15 that exhibits its properties effectively and has a mechanical strength that is never sufficient.
[0025]
After the seal piece 15 is peeled and removed, the seal protrusion 39 of the seal body 35 is in close contact with the upper end surface of the inner plug body 11 to ensure a tight assembly of the cap body 21 to the housing 1. The opening and closing of the body 1 is achieved without any trouble by attaching and detaching the upper cap 44 to and from the cap body 21.
[0026]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
In the invention according to claim 1, by using this type of two-layer structure and being assembled in a squeeze case, the content liquid is poured out by a squeeze operation of the case, and thereafter, The return of the outer layer to the original shape can be achieved smoothly and reliably, and a good use state can be obtained.
[0027]
In the invention according to claim 2, by providing the seal piece, it is possible to stably ensure the sealing of the casing even after the peeling and removal of the seal piece with respect to the casing that has ensured the sealing of the casing before opening. Thus, a safe use state of the housing can be obtained.
[Brief description of the drawings]
FIG. 1 is a half longitudinal front view of an embodiment of the present invention assembled to a housing.
FIG. 2 is an enlarged half longitudinal sectional view of a main part of the embodiment shown in FIG.
3 is a plan view of an inner plug body in the embodiment shown in FIG. 1. FIG.
4 is a cross-sectional view taken along line AA in FIG. 1. FIG.
[Explanation of symbols]
1; housing 2; housing 3; outer layer 4; inner layer 5; adhesive band 6; mouth 7; outer layer mouth portion 8; screw 9; air inlet 10; upper end portion 11; Outer flange 14; cross plate 15; seal piece 16; passage 20; pouring cap 21; cap body 22; assembled cylinder 23; screw 24; seal strip 25; top wall 26; Flange wall 29; Vent port 30; Outlet tube 31; Outlet port 32; Outlet valve 33; Connection portion 34; Vent passage 35; Seal body 36; Opening portion 37; Engaging groove 38; Inner tube piece 39; Fitting tube piece 41; Outer tube piece 42; Vent hole 43; Intake valve 44; Upper cap 45: Screw 46; Plug tube piece 47; Seal tube piece

Claims

An outer layer (3) made of a synthetic resin that forms a fixed outer shell and has squeeze properties, and an inner layer (4) made of a flexible synthetic resin that is detachably laminated on the outer layer (3) to form an inner bag ), And outside air enters the outer layer mouth portion (7) of the cylindrical mouth portion (6) standing upright at the upper end of the body portion between the outer layer (3) and the inner layer (4). A pouring cap assembled to the mouth portion (6) of the housing (1) in which the intake port (9) to be opened is installed, and is in close contact with the lower portion of the outer layer (3) than the inlet port (9) A sealing strip (24) projectingly provided on the inner peripheral surface and screwed into the upper end inward of the assembled tube (22) screwed to the outer periphery of the mouth (6) via the top wall (25) (26) is erected, and at the inside of the screw tube (26), a pouring tube (30) is continuously provided via a flange wall (28) at the upper end where the vent (29) is opened, The pouring A cap body (21) in which a spout (31) is formed on the inner side of (30) and an air passage (34) is formed between the outer side of the screw cylinder (26), and the pour tube (30) The cap body (21) is in close contact with the lower end of the cylinder and the upper end of the inner peripheral surface of the assembled cylinder (22), and an opening (36) is formed in the center and a vent hole (42) is formed in the periphery. A sealing body (35) that is in close contact with the upper end surface of the cylindrical wall (12) of the inner plug (11) that is closely fitted and assembled to the mouth (6) of the housing (1); An extraction valve (32) that is a check valve disposed at the upper end of (36), an intake valve (43) that is a check valve disposed at the lower end of the vent passage (34), and the screw An upper cap (44) screwed and assembled to the outer periphery of the tube (26) and opening and closing the spout (31).

In the structure in which the inner plug (11) is tightly fitted and assembled to the mouth (6) of the casing (1) and the upper end opening is adhered and sealed with an easily peelable seal piece (15). The note according to claim 1, wherein a seal protrusion (39) closely contacting the upper end surface of the inner plug body (11) is provided on the lower surface portion of the seal body (35) facing the upper end surface of the body (11). Out cap.