JPH0340298Y2 - - Google Patents
Info
- Publication number
- JPH0340298Y2 JPH0340298Y2 JP1988087553U JP8755388U JPH0340298Y2 JP H0340298 Y2 JPH0340298 Y2 JP H0340298Y2 JP 1988087553 U JP1988087553 U JP 1988087553U JP 8755388 U JP8755388 U JP 8755388U JP H0340298 Y2 JPH0340298 Y2 JP H0340298Y2
- Authority
- JP
- Japan
- Prior art keywords
- cap
- sealing membrane
- cap body
- molded
- synthetic resin
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 14
- 238000001802 infusion Methods 0.000 claims description 7
- 229920003002 synthetic resin Polymers 0.000 claims description 7
- 239000000057 synthetic resin Substances 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 5
- -1 polypropylene Polymers 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
Landscapes
- Closures For Containers (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
この考案は医療用等に使用される合成樹脂製輸
液用キヤツプに関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a synthetic resin infusion cap used for medical purposes.
［従来の技術］
従来、輸液用として、キヤツプ内に封口膜部を
有するプルトツプ型キヤツプが提供されている
（特開昭61−49980号等）。[Prior Art] Conventionally, a pull-top cap having a sealing membrane inside the cap has been provided for infusion (Japanese Patent Application Laid-open No. 49980/1983, etc.).
［この考案が解決しようとする課題］
しかしながらこの種のキヤツプは、内側栓の中
間壁に開口容易な円環スコアーを刻設し、この刻
設部分に沿つて引きちぎることによりキヤツプ本
体に開口部を形成する構造なので、開栓を容易に
するため、刻設の加工精度が要求されることが多
く、また特殊な金型が必要となる。特に輸液用の
場合、引きちぎりを容易にし、かつ加熱滅菌処理
に必要な耐熱性等をも具備させるため、特殊な無
機質材を添加混入した合成樹脂材料を採用しなけ
ればならない。この点、特開昭57−28768号は、
栓の周辺縁断面に凹凸状の嵌合部を設け、キヤツ
プに該栓を密接状態で嵌合し得る形状の縁断面を
形成し、キヤツプに該栓を嵌合させる構造のキヤ
ツプを提案している。しかしかかる構造では栓を
キヤツプに嵌合によつて接合しなければならない
ため、接合を確実にするには抜け落ちしない様に
複雑な形状をとらざるを得ず、成形が困難であ
る。[Problem to be solved by this invention] However, in this type of cap, an easy-to-open annular score is carved into the middle wall of the inner plug, and an opening is made in the cap body by tearing along this carved part. Since it is a molded structure, precision machining is often required in order to facilitate opening, and a special mold is also required. Particularly in the case of infusions, a synthetic resin material mixed with special inorganic materials must be used in order to make it easy to tear and to have the heat resistance necessary for heat sterilization. In this regard, JP-A No. 57-28768,
The present invention proposes a cap having a structure in which a concave-convex fitting portion is provided on the circumferential edge cross section of the stopper, the edge cross section is shaped to allow the stopper to fit tightly into the cap, and the stopper is fitted into the cap. There is. However, in such a structure, the stopper must be connected to the cap by fitting, so in order to ensure the connection, the plug must have a complicated shape to prevent it from falling out, which makes molding difficult.
また同キヤツプには、ボトル内部の封口と注射
針の針差しを可能にするため、封口膜部がキヤツ
プ内部に内設されたゴム栓下面に形成されてい
る。しかし外側栓の一部として形成されており、
しかも射出成形のゲート部を封口膜部の中心とす
る構成であるので、封口膜部は外側栓材質と共用
するため封口膜部としての材料と厚みに制限を受
ける。厚みについては針差しの容易性からは薄く
することが好ましいが、この構造では、膜厚を薄
くすると、樹脂結晶の配向が、封口膜部の中心部
分に形成された樹脂溜りを中心に円周方向へと広
がつているため、針差しを行えば、クラツクが発
生し易く、場合によつては陥没し、上部に配置す
るゴム栓がボトル内に脱落するおそれがある。 In addition, the cap has a sealing membrane portion formed on the lower surface of the rubber stopper located inside the cap in order to seal the interior of the bottle and allow insertion of the syringe needle. However, it is formed as part of the outer plug,
Moreover, since the injection-molded gate part is the center of the sealing membrane part, the sealing membrane part is also used as the outer plug material, so there are restrictions on the material and thickness of the sealing membrane part. As for the thickness, it is preferable to make it thin in terms of ease of needle insertion, but in this structure, if the film thickness is made thinner, the orientation of the resin crystals will change around the circumference around the resin pool formed in the center of the sealing film. Since it spreads in the direction, it is easy to crack when inserting the needle, and in some cases, it may cave in, and there is a risk that the rubber stopper placed at the top may fall out into the bottle.
この考案は上記問題点を解決しようとするもの
である。 This idea attempts to solve the above problems.
［課題を解決するための手段］
上記問題点を解決するためこの考案は、キヤツ
プに形成される上蓋の切取り手段として、キヤツ
プ本体及び上蓋を、相互間の剥離強度が相対的に
低い異質の素材で分離構成し、融着状態において
成形一体化し、キヤツプ本体の内側に設けられた
封口膜部を、フイルム状或はシート状の独立成形
体で一体成形する構成とした。[Means for Solving the Problems] In order to solve the above-mentioned problems, this invention uses a different material that has relatively low peel strength between the cap body and the top cover as a means for cutting off the top cover formed on the cap. The sealing membrane portion provided inside the cap body is integrally molded as an independent molded body in the form of a film or sheet.
［作用］
従つてプルトツプの切取り部を、従来の様にス
コアーとする構造ではなく、素材間の剥離強度の
相違を利用して相互に融着状態で接合された構造
なので、開栓を容易にするため、刻設の加工精度
が特に要求されることもなく、また複雑な形状と
することも特に不要で、さらに特殊な金型も不要
であり、また上蓋とキヤツプ本体とを素材的に分
離構成できるため、特殊な無機質材を添加混入し
た合成樹脂を採用しなくても、開栓は容易であり
かつ加熱滅菌処理に必要な耐熱性をも具備し得
る。[Function] Therefore, the cutout part of the pull top is not structured as a score like in the past, but is fused to each other by utilizing the difference in peel strength between the materials, making it easy to open. Therefore, there is no particular requirement for engraving precision, there is no need for a complicated shape, there is no need for a special mold, and the top lid and cap body can be separated by material. Since it can be constructed easily, it can be opened easily and has the heat resistance necessary for heat sterilization without using a synthetic resin mixed with a special inorganic material.
また封口膜部はキヤツプ本体と独立別個の成形
体なので、その選択する材料と厚みは制限を受け
ず、また針差しの容易化を図るためかなり薄くし
てもクラツクは発生しない。 Furthermore, since the sealing membrane part is a molded body independent and separate from the cap body, there are no restrictions on the material and thickness that can be selected for it, and cracks will not occur even if it is made quite thin to facilitate needle insertion.
［実施例］
第１図はこの考案に係る合成樹脂製の輸液用キ
ヤツプの一実施例を示す断面図である。１はキヤ
ツプ本体、２はキヤツプ本体１に内設されたゴム
栓である。ゴム栓２の上側には図示にようにプル
リング３を有する上蓋４があり、この上蓋４をプ
ルリング３により切取り部５に沿つて引きちぎる
ことによつて開口部が形成される。切取り部５
は、スコアーとして形成されておらず、キヤツプ
本体１はポリプロピレン、上蓋４はポリエチレン
をブレンドしたポリプロピレンとし、互いに剥離
強度が相対的に低い異質の合成樹脂材料により成
形一体化して、融着状態において接合する構造と
している。ゴム栓２の下側には、フイルム状或は
シート状の独立成形体で構成された、約0.1mm厚
のフイルム状の封口膜部６が一体成形されてい
る。[Example] FIG. 1 is a sectional view showing an example of a synthetic resin infusion cap according to this invention. 1 is a cap body, and 2 is a rubber stopper installed inside the cap body 1. Above the rubber stopper 2, there is a top cover 4 having a pull ring 3 as shown in the figure, and by tearing off the top cover 4 along a cutout 5 using the pull ring 3, an opening is formed. Cutout part 5
is not formed as a score, the cap body 1 is made of polypropylene, and the upper lid 4 is made of polypropylene blended with polyethylene, and they are integrally molded with different synthetic resin materials with relatively low peel strength and joined in a fused state. The structure is such that On the lower side of the rubber stopper 2, a film-like sealing membrane portion 6 having a thickness of approximately 0.1 mm is integrally molded, and is composed of a film-like or sheet-like independent molded body.
従つてプルリング３を引上げると、剥離強度が
相対的に低い接合状態にある上蓋４の切取り部５
に沿つて引きちぎられて開口される。そして開口
により露出したゴム栓２に注射針を突刺すと、ク
ラツクの発生なく、ゴム栓２から封口膜部６を貫
通してボトル内に達する。 Therefore, when the pull ring 3 is pulled up, the cutout portion 5 of the top cover 4, which is in a bonded state with relatively low peel strength, is removed.
It is torn open along the . When the injection needle is inserted into the rubber stopper 2 exposed by the opening, the injection needle passes through the sealing membrane 6 from the rubber stopper 2 into the bottle without causing a crack.
ところでこの考案は上記実施例に特に限定され
ない。例えばプルリング３を有する上蓋４の材質
として他に例えば酢酸ビニル共重合体（EVA）
等が採用できるが、開封容易化のため柔軟性のあ
る合成樹脂が好ましい。キヤツプ本体１の材質は
他にポリ塩化ビニル（PVC）等が使用できる。
組合わせとしては、キヤツプ本体１−プルリング
３において、ポリプロピレン（PP）−ポリエチレ
ン（PE）、PP−EVA、PVC−PEが好適である。
なお材質は相対的に剥離強度の低い素材、すなわ
ち成形時に溶融状態で接合一体化することにより
互いに接着はしているが、引きちぎりの力によつ
て剥離し易い程度に接着している素材であればよ
いわけである。 However, this invention is not particularly limited to the above embodiments. For example, vinyl acetate copolymer (EVA) may be used as a material for the top cover 4 having the pull ring 3.
etc., but a flexible synthetic resin is preferred for ease of opening. Other materials that can be used for the cap body 1 include polyvinyl chloride (PVC).
As for the combination of cap body 1 and pull ring 3, polypropylene (PP)-polyethylene (PE), PP-EVA, and PVC-PE are suitable.
Note that the material is a material with relatively low peel strength, that is, it is a material that is bonded to each other by being joined and integrated in a molten state during molding, but it is a material that is bonded to the extent that it is easily peeled off by the force of tearing. It's good to have it.
プルトツプの開封構造についても他に例えば第
２図に示す様に、上蓋４に、既述のプルリング３
に代えてツイスト７を中心部分に形成し、第３図
に示す様に矢印方向にひねることにより引きちぎ
つて開口させる構造としても差支えない。なおこ
の場合キヤツプ本体１はPP、上蓋４及びツイス
ト片７についてはPPと高密度PEのブレンド品に
より成形することが好ましい。成形方法としては
例えばツイスト片７を有する上蓋４を成形後、ゴ
ム栓２をインサートした後キヤツプ本体１を成形
する方法が採用できる。 Regarding the opening structure of the pull top, for example, as shown in FIG.
Instead, the twist 7 may be formed in the center and the structure may be torn open by twisting in the direction of the arrow as shown in FIG. In this case, it is preferable that the cap body 1 is made of PP, and the upper lid 4 and the twist piece 7 are made of a blend of PP and high-density PE. As a molding method, for example, a method may be adopted in which the upper lid 4 having the twist piece 7 is molded, the rubber stopper 2 is inserted, and then the cap body 1 is molded.
封口膜部６の厚みについては、他に適宜選択で
きるが、30μまでの薄肉化が好ましい。好適な厚
みの範囲は0.1〜0.2mmである。封口膜部６の材質
も種々採用できるが、この実施例ではPPのコポ
リマーを採用している。 Although the thickness of the sealing membrane portion 6 can be selected as appropriate, it is preferably as thin as 30 μm. A suitable thickness range is 0.1-0.2 mm. Although various materials can be used for the sealing membrane portion 6, a PP copolymer is used in this embodiment.
［考案の効果］
以上の通りこの考案は、プルトツプの切取り手
段を従来のスコアー構造から素材間の剥離強度の
相違を利用した構造とし、かつ独立成形体の封口
膜部をキヤツプ本体に一体成型する構成なので、
耐熱性を具備しつつ開口容易であり、成形容易で
経済性も優れている。また針差しはクラツクの発
生を伴わずにきわめて容易にでき、ゴム栓がボト
ル内に脱落することもなく、きわめて実用的であ
る輸液用キヤツプを提供することができた。[Effects of the invention] As described above, this invention changes the pull-top cutting means from the conventional score structure to a structure that takes advantage of the difference in peel strength between materials, and also molds the sealing membrane part of the independent molded body integrally with the cap body. Because the configuration
It is heat resistant, easy to open, easy to mold, and economical. In addition, the needle can be inserted very easily without any cracks, and the rubber stopper does not fall into the bottle, making it possible to provide an extremely practical cap for infusion.
第１図はこの考案の輸液用キヤツプの一実施例
を示す断面図、第２図は同他実施例を示す断面
図、第３図は同斜視図である。
１……キヤツプ本体、２……ゴム栓、４……上
蓋、５……切取り部、６……封口膜部。
FIG. 1 is a sectional view showing one embodiment of the infusion cap of this invention, FIG. 2 is a sectional view showing another embodiment, and FIG. 3 is a perspective view thereof. DESCRIPTION OF SYMBOLS 1...Cap body, 2...Rubber stopper, 4...Top lid, 5...Cutout part, 6...Sealing membrane part.
Claims (1)
部をキヤツプ本体に形成する合成樹脂製のキヤツ
プで、キヤツプ本体及び上蓋は、相互間の剥離強
度が相対的に低い異質の素材でそれぞれ分離構成
され、上記切取り部において融着状態で成形一体
化され、キヤツプ本体の内側には、フイルム状或
はシート状の独立成形体で構成された封口膜部が
一体成形された輸液用キヤツプ。 This is a synthetic resin cap that can be torn off along the cutout on the periphery of the top lid to form an opening in the cap body.The cap body and top lid are each made of separate materials that have relatively low peel strength between them. An infusion cap, which is integrally molded in a fused state at the cut-out portion, and has a sealing membrane portion made of a film-like or sheet-like independent molded body integrally formed inside the cap main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988087553U JPH0340298Y2 (en) | 1988-06-30 | 1988-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988087553U JPH0340298Y2 (en) | 1988-06-30 | 1988-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH028436U JPH028436U (en) | 1990-01-19 |
| JPH0340298Y2 true JPH0340298Y2 (en) | 1991-08-23 |
Family
ID=31312158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988087553U Expired JPH0340298Y2 (en) | 1988-06-30 | 1988-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0340298Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5728768A (en) * | 1979-12-29 | 1982-02-16 | Toppan Printing Co Ltd | Cap with stopper which can easily be uncorked |
| JPS6322930B2 (en) * | 1979-12-25 | 1988-05-13 | Furukawa Electric Co Ltd |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5891551U (en) * | 1981-12-16 | 1983-06-21 | 石田プレス工業株式会社 | Medicated bottle exterior lid |
| JPS6322930U (en) * | 1986-07-31 | 1988-02-15 |
-
1988
- 1988-06-30 JP JP1988087553U patent/JPH0340298Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6322930B2 (en) * | 1979-12-25 | 1988-05-13 | Furukawa Electric Co Ltd | |
| JPS5728768A (en) * | 1979-12-29 | 1982-02-16 | Toppan Printing Co Ltd | Cap with stopper which can easily be uncorked |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH028436U (en) | 1990-01-19 |
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