JP4449458B2 - Container having screw-type sealing mechanism - Google Patents
Container having screw-type sealing mechanism Download PDFInfo
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- JP4449458B2 JP4449458B2 JP2004001711A JP2004001711A JP4449458B2 JP 4449458 B2 JP4449458 B2 JP 4449458B2 JP 2004001711 A JP2004001711 A JP 2004001711A JP 2004001711 A JP2004001711 A JP 2004001711A JP 4449458 B2 JP4449458 B2 JP 4449458B2
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- container
- cap
- neck
- mouth
- sealing mechanism
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Description
本発明は、軟質樹脂からなる容器本体に、医療医薬、検査液、液体食品などの高度の密封性を必要とする内容物を収納するときの容器本体の口頸部とそれに螺着するキャップとの螺合方式密封機構を有する容器に関するものである。 The present invention relates to a container body made of a soft resin, and a mouth and neck portion of the container body for storing contents requiring high sealing performance such as medical drugs, test liquids, and liquid foods, and a cap screwed to the neck The present invention relates to a container having a screw-type sealing mechanism.
従来、軟質樹脂による密封機構としては、例えば図2に示すように、下面に軟質樹脂からなる中栓(311)を垂設した打栓蓋(310)を容器本体の口頸部(320)に打栓し、口頸部の外周面に係止リング(321)を設けてアルミ包装(330)したものがある。また、図3に示すように、軟質樹脂からなる打栓蓋(410)下面に垂設するインナーリング(411)の外周面上方に咬合凸リング(412)を設け、この咬合凸リングが咬合する環状咬合凹溝(421)を容器本体の口頸部(420)の内周面に設けたものがある。また、図4に示す液体用紙容器用口栓(500)の場合には、軟質樹脂からなるスパウト(520)(注出口具)に軟質樹脂からなるキャップ(510)を螺着するものであるが、螺着時にキャップとスパウト間に捩じれによる歪みを発生することがあり、高い密封性が安定して得られないため、スパウトの注出筒(521)の内側下方に封鎖板(522)を設け、この封鎖板の開封予定位置に環状薄肉脆弱線(523)を設け、この環状薄肉脆弱線の内側近傍位置に先端にプルリング(525)をもつ支柱(524)を立設したものがある。このスパウトは、開封するときにプルリングを引っ張って封鎖板の環状薄肉脆弱線を破断して開封するものであった。 2. Description of the Related Art Conventionally, as a sealing mechanism using a soft resin, for example, as shown in FIG. There is one which is stoppered and provided with a locking ring (321) on the outer peripheral surface of the mouth and neck portion and aluminum package (330). Further, as shown in FIG. 3, an occlusal convex ring (412) is provided above the outer peripheral surface of an inner ring (411) suspended from the lower surface of the stopper lid (410) made of a soft resin, and this occlusal convex ring is engaged. There exists what provided the annular occlusal ditch | groove (421) in the internal peripheral surface of the mouth neck part (420) of a container main body. In the case of the liquid paper container cap (500) shown in FIG. 4, a soft resin cap (510) is screwed onto a soft resin spout (520) (outlet tool). Since a distortion due to twisting may occur between the cap and the spout during screwing, and a high sealing performance cannot be obtained stably, a sealing plate (522) is provided below the spout barrel (521). In some cases, an annular thin fragile wire (523) is provided at a position where the sealing plate is to be opened, and a column (524) having a pull ring (525) at the tip is provided at a position near the inside of the annular thin fragile wire. In this spout, a pull ring was pulled when opening, and the annular thin line of weakness of the sealing plate was broken and opened.
しかしながら、図2の打栓蓋は、この打栓蓋の抜け止めのために、別工程のアルミ包装を必要とし、図3の打栓蓋は、容器本体の口頸部に咬合により嵌着するため、蓋の開け閉めが固く、使用しにくいことがあった。また、図4の液体用紙容器用口栓は、構造が複雑となりコスト高となった。 However, the stopper lid in FIG. 2 requires aluminum packaging in a separate process to prevent the stopper lid from coming off, and the stopper lid in FIG. 3 is fitted into the mouth and neck of the container body by occlusion. Therefore, the lid is hard to open and close, and it may be difficult to use. Also, the liquid paper container cap of FIG. 4 has a complicated structure and is expensive.
本発明は、上述の従来の軟質樹脂による密封機構における問題点を解決したものであり、密封工程が一工程で、開け閉めが容易であり、構造が比較的に簡単で、高度の密封性が得られる螺合方式密封機構を有する容器を提供するものである。 The present invention solves the problems in the above-mentioned conventional sealing mechanism using soft resin, the sealing process is one step, the opening and closing is easy, the structure is relatively simple, and the high sealing performance is high. resulting screwing system sealing mechanism is to provide a container having a.
すなわち、本発明の第1の発明は、軟質樹脂からなる容器本体の口頸部とそれに螺着するキャップとの螺合方式密封機構を有する容器であって、前記キャップは、硬質樹脂からなるキャップ本体と軟質樹脂からなる中栓とからなり、前記中栓は、下面に前記容器本体の口頸部を密封するためのインナーリングを垂設し、前記キャップ本体は、前記中栓を天板下面下に周壁内周面上方に設ける係止リングにより係止して挿着し、前記天板下面の前記中栓のインナーリング上の位置に、断面形状が逆三角形状のコンタクトリングを設け、前記容器本体の口頸部は、前記インナーリングの外周面が内周面に密接する上方の口部と、外周面に前記キャップ本体の雌ネジに螺合する雄ネジを設ける下方の頸部とからなり、かつ前記頸部の肉厚を前記口部の肉厚よりも厚くしたことを特徴とする螺合方式密封機構を有する容器である。 That is, the first invention of the present invention, there is provided a container having a threaded system sealing mechanism between the cap screwing neck and that of the container body made of a soft resin, the cap is formed of a hard resin The cap includes a cap body and an inner plug made of a soft resin, and the inner plug is provided with an inner ring for sealing the mouth and neck of the container body on the lower surface, and the cap body includes the inner plug on the top plate. Locked and inserted by a locking ring provided above the inner peripheral surface of the peripheral wall under the lower surface, and provided with a contact ring having an inverted triangular cross section at a position on the inner ring of the inner plug on the lower surface of the top plate, The mouth and neck portion of the container body includes an upper mouth portion where the outer peripheral surface of the inner ring is in close contact with the inner peripheral surface, and a lower neck portion provided with a male screw that is screwed into the female screw of the cap body on the outer peripheral surface. And the thickness of the neck is the mouth A container having a screwing method sealing mechanism, characterized in that the thicker than the thickness.
そして、本発明の第2の発明は、前記軟質樹脂の曲げ弾性率が、300MPa未満で、前記硬質樹脂の曲げ弾性率が、700MPa以上であることを特徴とする請求項1記載の螺合方式密封機構を有する容器である。 The second aspect of the present invention, the flexural modulus of the soft resin is less than 300 MPa, the flexural modulus of the hard resin is screwed method of claim 1, wherein the at least 700MPa A container having a sealing mechanism.
本発明の螺合方式密封機構を有する容器は、図1に示すように、軟質樹脂の容器本体の口頸部(200)に、硬質樹脂のキャップ本体(110)の天板(111)下面下に軟質樹脂の中栓(120)を挿着したキャップ(100)を螺合により装着するものであり、容器本体にキャップを螺着するときに、キャップ本体の天板下面に設けられているコンタクトリング(112)の先端で、中栓(120)のインナーリング(121)上を中栓上面を押圧しながらキャップと中栓を回転させて、キャップの中栓を容器本体の口頸部の口部(210)の内周面に押し込むため、容器本体の口部とキャップの中栓間に捩じれによる歪みが発生しにくく、この結果、高度の密封性が得られるものである。また、構造も比較的に簡単である。 As shown in FIG. 1, the container having the screw- type sealing mechanism of the present invention is provided on the mouth and neck (200) of the soft resin container main body and below the top surface (111) of the hard resin cap main body (110). A cap (100) having a soft resin inner plug (120) inserted therein is attached by screwing, and when the cap is screwed into the container body, a contact provided on the lower surface of the top plate of the cap body. At the tip of the ring (112), the cap and the inner plug are rotated while pressing the upper surface of the inner plug on the inner ring (121) of the inner plug (120). Since it is pushed into the inner peripheral surface of the portion (210), distortion due to twisting hardly occurs between the mouth portion of the container body and the cap of the cap, and as a result, a high degree of sealing is obtained. In addition, the structure is relatively simple.
また、本発明の螺合方式密封機構を有する容器は、図1に示すように、軟質樹脂の容器本体の口頸部(200)の外周面に設けられている雄ネジ(221)に、硬質樹脂のキャップ本体(110)の内周面に設けられている雌ネジ(114)を螺合させて装着するものであり、装着したのちに、キャップを容器本体に固定させるアルミ包装のような固定工程は必要とせず密封工程が一工程で済む。 Further, as shown in FIG. 1, the container having the screwing type sealing mechanism of the present invention is hardened to the male screw (221) provided on the outer peripheral surface of the mouth and neck (200) of the soft resin container body. A female screw (114) provided on the inner peripheral surface of the resin cap main body (110) is screwed and attached, and after the attachment, fixing such as an aluminum package for fixing the cap to the container main body. No sealing process is required and no process is required.
また、本発明の螺合方式密封機構を有する容器は、容器本体の口頸部にキャップを螺合させて装着したものであり、容器の開封は、キャップの回転による開け閉めで容易に行うことができる。 In addition, the container having the screwing type sealing mechanism of the present invention is a container in which a cap is screwed onto the mouth and neck of the container body, and the container can be opened easily by opening and closing the cap by rotation. Can do.
次に、本発明の螺合方式密封機構を有する容器の一実施形態について、図を用いて詳細に説明する。 Next, an embodiment of a container having a screw- type sealing mechanism of the present invention will be described in detail with reference to the drawings.
図1は、一実施形態の螺合方式密封機構を有する容器の要部を示す部分断面図である。 Figure 1 is a partial sectional view showing a main portion of a container having a screwing method sealing mechanism of an embodiment.
本実施形態の螺合方式密封機構を有する容器は、図1に示すように、軟質樹脂の容器本体の口頸部(200)に、硬質樹脂のキャップ本体(110)の天板(111) 下面下に軟質樹脂の中栓(120)を挿着したキャップ(100)を螺合により装着するものである。容器本体は、曲げ弾性率が300MPa未満の低密度ポリエチレンなどの軟質の熱可塑性樹脂を用いて、ブロー成形法や射出成形法により作製するものである。キャップは、曲げ弾性率が700MPa以上のポリプロピレンなどの硬質の熱可塑性樹脂を用いて、射出成形法により作製するものである。中栓は、曲げ弾性率が300MPa未満の低密度ポリエチレンや熱可塑性エラストマーなどの軟質の熱可塑性樹脂を用いて、射出成形法により作製するものである。 A container having a screwing method sealing mechanism of the present embodiment, as shown in FIG. 1, the neck of the container body of the soft resin (200), top plate (111) lower surface of the hard resin cap body (110) A cap (100) with a soft resin inner plug (120) inserted therein is attached by screwing. The container body is manufactured by a blow molding method or an injection molding method using a soft thermoplastic resin such as low density polyethylene having a flexural modulus of less than 300 MPa. The cap is manufactured by an injection molding method using a hard thermoplastic resin such as polypropylene having a flexural modulus of 700 MPa or more. The inner plug is produced by an injection molding method using a soft thermoplastic resin such as low density polyethylene or thermoplastic elastomer having a flexural modulus of less than 300 MPa .
そして、図1に示すように、中栓(120)の構造は、下面に容器本体の口頸部(200)を密封するためのインナーリング(121)(外周面を口頸部の内周面に密接)を垂設し、キャップ本体(110)の構造は、天板(111)と周壁(113)とからなり、周壁内周面上方に中栓(120)を天板下面下に挿着するための係止リング(115)を設け、天板下面の中栓のインナーリング上の位置に、断面形状が逆三角形状のコンタクトリング(112)(下方先端を中栓の上面に密接押圧)を設けるものである。 As shown in FIG. 1, the inner plug (120) has an inner ring (121) for sealing the mouth and neck (200) of the container body on the lower surface (the outer peripheral surface is the inner peripheral surface of the mouth and neck). The cap body (110) is composed of a top plate (111) and a peripheral wall (113), and an inner plug (120) is inserted above the inner peripheral surface of the peripheral wall below the lower surface of the top plate. An engagement ring (115) is provided, and a contact ring (112) whose cross-sectional shape is an inverted triangle at a position on the inner ring of the inner plug under the top plate (the lower tip is pressed closely against the upper surface of the inner plug) Is provided.
容器本体の口頸部(200)は、図1に示すように、キャップ(100)の中栓(120)のインナーリング(121)の外周面が内周面に密接する上方の口部(210)と、外周面にキャップ本体(110)の雌ネジ(114)に螺合する雄ネジ(221)を設ける下方の頸部(220)とからなるものである。そして、頸部の肉厚(T)を口部の肉厚(t)よりも厚くするものである。頸部を厚肉にするのは、口頸部にキャップを螺着する
ときに、雄ネジを外周面に形成する頸部が、キャップの螺着にともなう捩じれによる歪みを発生しにくくするためである。なお、容器本体の口頸部の口部及び頸部、またインナーリングの厚みは、使用する材質、使用目的に応じて商品設計するものである。
As shown in FIG. 1, the mouth / neck portion (200) of the container main body has an upper mouth portion (210) in which the outer peripheral surface of the inner ring (121) of the inner plug (120) of the cap (100) is in close contact with the inner peripheral surface. ) And a lower neck portion (220) provided with a male screw (221) screwed into a female screw (114) of the cap body (110) on the outer peripheral surface. The neck thickness (T) is made thicker than the mouth thickness (t). The neck is thickened so that when the cap is screwed onto the neck of the mouth, the neck that forms the male thread on the outer peripheral surface is less likely to be distorted by the twist associated with the screwing of the cap. is there. The mouth and neck of the container body, the neck, and the thickness of the inner ring are designed according to the material used and the purpose of use.
100,510……キャップ
110……キャップ本体
111……天板
112……コンタクトリング
113……周壁
114……雌ネジ
115……係止リング
120……中栓
121,411……インナーリング
200……口頸部
210……口部
220……頸部
221……雄ネジ
310,410……打栓蓋
311……中栓
320,420……口頸部
321……係着リング
330……アルミ包装
412……咬合凸リング
421……環状咬合凹溝
500……液体用紙容器用口栓
520……スパウト
521……注出筒
522……封鎖板
523……環状薄肉脆弱線
524……支柱
525……プルリング
T,t……肉厚
100, 510 ...
Claims (2)
Priority Applications (1)
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JP2004001711A JP4449458B2 (en) | 2004-01-07 | 2004-01-07 | Container having screw-type sealing mechanism |
Applications Claiming Priority (1)
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JP2004001711A JP4449458B2 (en) | 2004-01-07 | 2004-01-07 | Container having screw-type sealing mechanism |
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JP2005193942A JP2005193942A (en) | 2005-07-21 |
JP4449458B2 true JP4449458B2 (en) | 2010-04-14 |
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JP2004001711A Expired - Fee Related JP4449458B2 (en) | 2004-01-07 | 2004-01-07 | Container having screw-type sealing mechanism |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013023221A (en) * | 2011-07-14 | 2013-02-04 | Gold Kogyo Kk | Container |
JP2015127206A (en) * | 2013-12-27 | 2015-07-09 | エステー株式会社 | Exudation prevention structure |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012232773A (en) * | 2011-04-28 | 2012-11-29 | Yoshino Kogyosho Co Ltd | Container |
-
2004
- 2004-01-07 JP JP2004001711A patent/JP4449458B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013023221A (en) * | 2011-07-14 | 2013-02-04 | Gold Kogyo Kk | Container |
JP2015127206A (en) * | 2013-12-27 | 2015-07-09 | エステー株式会社 | Exudation prevention structure |
Also Published As
Publication number | Publication date |
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JP2005193942A (en) | 2005-07-21 |
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