EP0172613A2 - Resin-laminated rubber plug - Google Patents
Resin-laminated rubber plug Download PDFInfo
- Publication number
- EP0172613A2 EP0172613A2 EP85304005A EP85304005A EP0172613A2 EP 0172613 A2 EP0172613 A2 EP 0172613A2 EP 85304005 A EP85304005 A EP 85304005A EP 85304005 A EP85304005 A EP 85304005A EP 0172613 A2 EP0172613 A2 EP 0172613A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- plug
- rubber
- body part
- rubber plug
- vial
- 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.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D51/00—Closures not otherwise provided for
- B65D51/002—Closures to be pierced by an extracting-device for the contents and fixed on the container by separate retaining means
Definitions
- the thus formed body part is punched in a predetermined dimension and placed in the lower metal mould, on which the same compound rubber as described above and an upper metal mould having a recess for forming a flanged cap part of the rubber plug are placed, and the lower metal mould and upper metal mould are heated and pressed to vulcanize the rubber and simultaneously combine the cap part and body part, followed by punching to obtain a finished laminated rubber plug.
Abstract
Description
- This invention relates to a resin-laminated rubber plug for a medical bottle or vial and more particularly it is concerned with a rubber plug having a body part for insertion into the mouth of a bottle or vial, which body part has a surrounding lamina of chemical-resistant resin.
- Lately, high quality or high efficiency medical drugs have been developed and accordingly, the techniques for the prodution thereof have made remarkable progress. That is, it has been required to keep the optimum conditions, not only during the production of medical drugs, but also during storage thereof so as to maintain this efficacy and purity.
- For example, it is said that a rubber plug made of isoprene-isobutylene rubber whose surface for engagement with the inner surface of the mouth of a bottle is laminated with a fluorine resin is an excellent sealant because the rubber, which is gas impermeable and resistant to water absorbtion, is laminated with a resin having a chemical inactivity and low adsorptivity. Such a plug is disclosed in Japanese Patent Publication No. 53184/1982. However, such a laminated rubber plug has encountered a problem of airtightness depending upon the process for preparing a medical drug, and it has thus been proposed to provide a small annular protrusion on the lower annular surface area of the rubber plug in contact with the annular front surface of a medical vial (US Patent No. 4,441,621). This structure is effective under some conditions, but the airtightness diminishes, depending on the degree of vacuum in the medical vial and the passage of time, after fitment of the rubber plug into the vial mouth, unless an aluminum or other fastening cap is used.
- It is an object of the present invention to provide an improved resin-laminated rubber plug or closure for a medical bottle or vial, and in particular to improve the airtightness of such a plug, which may be pierceable (for example by the needle of a syringe).
- The invention is characterised in that the body part is free from the chemically-resistant resin at its upper end, where the surface of the rubber is exposed for contacting the adjacent part of the inner surface of the mouth of the bottle or vial.
-
- Fig. 1 is a side sectional view of a medical vial closed by a rubber plug with an aluminum sealing cap secured thereto.
- Fig. 2 is a side sectional view, on an enlarged scale, of the mouth of a medical vial closed by a rubber plug of the prior art.
- Fig. 3 is a side sectional view, on an enlarged scale, of the mouth of a medical vial closed by a rubber plug according to the present invention.
- Fig. 4 is a side sectional view, on an enlarged scale, of the mouth of a medical vial closed by a rubber plug according to the present invention with an aluminum sealing cap secured thereto.
- Fig. 5 is a side sectional view, on an enlarged scale, of another embodiment of a rubber plug according to the present invention.
- Fig. 6 to Fig. 10 are side sectional views, on an enlarged scale, of various embodiments of the characteristic part of rubber plugs according to the present invention.
- Fig. 11 and Fig. 12 are side sectional views similar to Fig. 6 to Fig. 10 but showing examples of the prior are.
- The rubber for a plug, according to the invention, may be a natural rubber or a synthetic rubber such as iroprene-isobutylene rubber, isoprene rubber, butadiene rubber, ethylene-propylene rubber or a rubber obtained by polymerizing terpolymer solutions. For the chemical-resistant resin, there may be used a tetrafluoroethylene polymer, tetrafluoroethylene-hexafluoropropylene copolymers, tetrafluoroethylene-pentafluoropropylene copolymers, tetrafluoroethylene-ethylene copolymers, tetrafluoroethylene-propolymers, chlorotrifluoroethylene polymer and other fluoro-resins, and polyethylene, polypropylene or other resins.
- Limination of such a resin can be carried out in known manner, for example, by a method described in Japanese Patent Publication No. 53184/1982.
- The present invention will now be explained by reference to the accompanying drawings. In order to store medicaments or injection liquids without deterioration for a long time, it is generally required to keep them in a cold and dark place and to keep vials therefor evacuated or sealed with an inert gas G. When these conditions were examined in detail in a process for preparing a medicament and in a method of sealing a vial, it was found necessary to charge a medicament E in a vial B, toevacuate the vial B or rinse it with a gas and to ascertain the contacted state of a rubber plug A with the inner surface of the vial mouth at locations 2, 3 and 4 as shown in Fig. 3. In the case of the state as shown in Fig. 2, change of the degree of vacuum and leakage of the filled
gas 5 and 6 take place while a rubber plug A is plugged into the vial mouth and fastened firmly by an aluminum cap D, since a fluoro-resin C coated onto the body part 2 of the rubber plug A has a hard and smooth surface and an inferior adhesion to the inner surface of the vial mouth. - Generally, a rubber plug is so designed that the diameter w of the body part to be inserted into the vial mouth is 1-10% larger than that of the vial's mouth. The sealing of the vial mouth is considered to be improved by increasing this fraction to increase the pressure of the outer surface of the body part on the inner surface of the vial mouth at positions 2 and 3, but in the case of using a resin-laminated rubber plug, this consideration is not correct, i.e. there is found no such effect. Even if the rubber plug is completely plugged into the vial mouth, changes in the passage of time, i.e. the lowering of vacuum degree or the leakage of gas after rinsing cannot be prevented (unless the plug is firmly fastered by an aluminum cap) because of the smoothness and hardness of the resin surface.
- According to the present invention, it is found that the retention of vacuum or a sealed gas can surprisingly be improved by keeping the rubber surface exposed within a range (x) of 0.1 to 5 mm at the upper end of the body part as shown in Fig. 6, 7 and 8 or by providing one or two small annular protrusions on the rubber surface in this range as shown in Fig. 5, 9 and 10. Preferably, the small protrusion has a width (along the body) of at most 3 mm and a height z (laterally of the body) of at most 0.8 mm in cross section. Under the above described conditions, a plugging operation of the rubber plug can also be carried out in smooth manner.
- Preparation of the rubber plug of the present invention is carried out as follows: A chemical-resistant resin film to be laminated is placed on a lower metal mould having a plurality of recesses for forming an annular body part of a rubber plug to be inserted into the mouth of a vial. On the lower metal mould a vulcanizable compound rubber and an upper metal mould are stacked, and the lower metal mould and upper metal mould are heated and pressed at a predetermined temperature to form the body part and laminate the resin film thereto. Then, the thus formed body part is punched in a predetermined dimension and placed in the lower metal mould, on which the same compound rubber as described above and an upper metal mould having a recess for forming a flanged cap part of the rubber plug are placed, and the lower metal mould and upper metal mould are heated and pressed to vulcanize the rubber and simultaneously combine the cap part and body part, followed by punching to obtain a finished laminated rubber plug.
- The rubber plug of the present invention can be applied to various containers, for example, glass bottles or vials and plastics-laminated bottles or vials for medicaments or injection liquids of interferon, antibiotics, vitamines, vaccines, sugars, basic amino acids and the like.
- Charging of a vial or bottle with a medicament may be carried out by the freeze-drying method, liquid charging method or powder charging method, and in any method the rubber plug of the present invention provides an excellent airtight seal.
- Depending on these methods, the shape of the body part of a rubber plug can be varied, but in general, the size of the rubber plug is such that the maximum diameter w of the body part is 7 to 30 mm and the length (x + y) of the body part comprises the length x (0.1 to 5 mm) of a rubber-surfaced portion and the length y of a portion bearing the chemically resistant resin film, y being 3 to 15 mm and x/(x + y) being preferably not greater than o.5, more preferably between 0.1 and 0.35.
- The following examples are given in order to illustrate the present invention without limiting the same.
- Sealing tests were carried out using a rubber (V10-F7) plug of the present invention, having a body part with a diameter of 13.1 ± 0.1 mm and a tubular bottle (JIS R 3523-(1978)) for an injection liquid TB 6, having a volume of 31.0 ml and a mouth of inner diameter of 12.5 + 0.2 mm.
- In each test, the above described tubular bottle was charged in a vacuum plugging machine which was then adjusted to a vacuum degree of 10 + 1 Torr. A rubber plug was plugged into the mouth of the bottle. The plugged bottle was allowed to stand in air for 360 + 5 minutes, during which the degree of vacuum in the tubular bottle was measured by means of an electron manometer (TOYOTA-MANOMETER-AA 2472 manufactured by Toyota Koki KK). The test was carried out on rubber plugs of the present invention (Tests Nos. 1-4 corresponding to Fig. 6-9) and rubber plugs of the prior art (Test Nos. 5-7 corresponding to Fig. 11-13), thus obtaining results shown in the following table:
- As is evident from these results, the degree of vacuum can substantially be maintained in spite of allowing the sample bottle to stand in the air for about 6 hours in the cases of Test Nos. 1-4 wherein the outer circumference of the upper end of the leg part is not laminated to expose the rubber surface (x) according to the present invention. In the case of Test Nos. 11-13 wherein the lamina reaches the annular front face of the cap part of the rubber plug as in the prior art, on the other hand, the sealing is not sufficient because of leakage of air through the gap 2, 3 and 4 between the lamina and the mouth of the bottle.
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP116191/84U | 1984-07-31 | ||
JP11619184U JPS6131441U (en) | 1984-07-31 | 1984-07-31 | Resin laminate rubber stopper for pharmaceuticals |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0172613A2 true EP0172613A2 (en) | 1986-02-26 |
EP0172613A3 EP0172613A3 (en) | 1987-11-19 |
Family
ID=14681085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85304005A Withdrawn EP0172613A3 (en) | 1984-07-31 | 1985-06-05 | Resin-laminated rubber plug |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0172613A3 (en) |
JP (1) | JPS6131441U (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0294127A2 (en) * | 1987-05-29 | 1988-12-07 | Daikyo Gomu Seiko Ltd. | Resin-laminated rubber stopper |
EP0450096A1 (en) * | 1989-10-26 | 1991-10-09 | Nissho Corporation | Rubber plug for vial |
EP0744351A2 (en) * | 1995-05-25 | 1996-11-27 | Showa Denko Kabushiki Kaisha | Stopper assembly for a container for aqueous infusion and a method for making thereof |
EP1020277A1 (en) * | 1999-01-11 | 2000-07-19 | Daikyo Seiko, Ltd. | Method for manufacturing laminated rubber closure and laminated rubber closure produced thereby |
DE10309348A1 (en) * | 2003-03-03 | 2004-09-23 | Chromtech Gesellschaft für analytische Meßtechnik mbH | Sample holder for chromatography analysis has polytetrafluoroethylene cap and closure with sealed outlet channel |
EP1649932A1 (en) * | 2004-10-20 | 2006-04-26 | Agilent Technologies Inc. a Delaware Corporation | Sealing devices |
EP1760002A1 (en) * | 2005-08-31 | 2007-03-07 | West Pharmaceutical Services Deutschland Gmbh & Co. KG | Pharmaceutical bottle or similar container |
EP1792657A1 (en) * | 2005-12-01 | 2007-06-06 | Eppendorf Ag | Container with lid |
EP2431295A1 (en) * | 2010-09-17 | 2012-03-21 | Daikyo Seiko, Ltd. | A rubber plug for a medical vial container |
EP3243625B1 (en) * | 2016-05-11 | 2019-08-07 | Sumitomo Rubber Industries, Ltd. | Medical rubber stopper and method for producing medical rubber stopper |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2753247B2 (en) * | 1988-02-19 | 1998-05-18 | 株式会社日立製作所 | Semiconductor integrated circuit device |
JPH0244750Y2 (en) * | 1988-03-18 | 1990-11-28 | ||
JPH0223961A (en) * | 1988-07-13 | 1990-01-26 | Showa Rubber Kk | Laminated rubber plug for medicine, method and mold for preparing the same |
JPH0311265A (en) * | 1989-06-09 | 1991-01-18 | Chubu Electric Power Co Inc | Latent heat accumulator |
JP2705435B2 (en) * | 1992-03-18 | 1998-01-28 | 住友金属工業株式会社 | Method for producing Cr-containing steel pipe for oil well |
EP0617949A1 (en) * | 1993-03-25 | 1994-10-05 | Pohl GmbH & Co. KG | Infusion bottle |
DE4309738C1 (en) * | 1993-03-25 | 1994-10-13 | Pohl Gmbh & Co Kg | Closure cap |
JP3579519B2 (en) * | 1995-07-25 | 2004-10-20 | 秀吉 松岡 | Submersible fishing float |
JPH1176365A (en) * | 1997-09-01 | 1999-03-23 | Nissho Corp | Rubber plug for vial |
JP2003128095A (en) * | 2001-10-24 | 2003-05-08 | Ohtsu Tire & Rubber Co Ltd :The | Medicinal rubber stopper and production method therefor |
JP4424888B2 (en) * | 2002-05-31 | 2010-03-03 | ジュテック株式会社 | Combination of container and cap |
JP4579484B2 (en) * | 2002-06-24 | 2010-11-10 | ニプロ株式会社 | Medical rubber stopper with improved liquid leakage |
JP2004073219A (en) * | 2002-08-09 | 2004-03-11 | Daikyo Seiko Ltd | Rubber plug for pharmaceutical container |
JP4889959B2 (en) * | 2005-04-04 | 2012-03-07 | 株式会社ベネシス | Cap for liquid preparation and container for liquid preparation provided with the same |
US20070282308A1 (en) * | 2006-05-30 | 2007-12-06 | Benjamin Bell | Septum compression rings |
US20100206836A1 (en) * | 2007-10-18 | 2010-08-19 | Tsuyoshi Koshidaka | Vial rubber-stopper |
US10022301B2 (en) * | 2013-03-15 | 2018-07-17 | Becton Dickinson and Company Ltd. | Connection system for medical device components |
JP6699349B2 (en) * | 2016-05-23 | 2020-05-27 | 中国電力株式会社 | Nesting prevention tool for arm |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1061810A (en) * | 1964-12-22 | 1967-03-15 | Allen & Hanburys Ltd | Improvements relating to closures for containers |
FR1479255A (en) * | 1965-11-25 | 1967-05-05 | Stopper for containers such as flasks or the like | |
GB1224732A (en) * | 1967-02-27 | 1971-03-10 | Allen & Hanburys Ltd | Improvements relating to closures for containers |
FR2074704A7 (en) * | 1970-01-20 | 1971-10-08 | Rumpler Jean Jacques | |
GB2106084A (en) * | 1981-08-24 | 1983-04-07 | Daikyo Gomu Seiko Kk | Pierceable closure member for container |
US4398989A (en) * | 1974-05-24 | 1983-08-16 | The West Company | System for making molded articles |
EP0148426A2 (en) * | 1983-12-22 | 1985-07-17 | Pharma Gummi Wimmer West GmbH | Method to produce pharmaceutical stopper pistons or the like |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4517831Y1 (en) * | 1966-03-10 | 1970-07-21 | ||
JPS5021828U (en) * | 1973-06-27 | 1975-03-12 |
-
1984
- 1984-07-31 JP JP11619184U patent/JPS6131441U/en active Granted
-
1985
- 1985-06-05 EP EP85304005A patent/EP0172613A3/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1061810A (en) * | 1964-12-22 | 1967-03-15 | Allen & Hanburys Ltd | Improvements relating to closures for containers |
FR1479255A (en) * | 1965-11-25 | 1967-05-05 | Stopper for containers such as flasks or the like | |
GB1224732A (en) * | 1967-02-27 | 1971-03-10 | Allen & Hanburys Ltd | Improvements relating to closures for containers |
FR2074704A7 (en) * | 1970-01-20 | 1971-10-08 | Rumpler Jean Jacques | |
US4398989A (en) * | 1974-05-24 | 1983-08-16 | The West Company | System for making molded articles |
GB2106084A (en) * | 1981-08-24 | 1983-04-07 | Daikyo Gomu Seiko Kk | Pierceable closure member for container |
EP0148426A2 (en) * | 1983-12-22 | 1985-07-17 | Pharma Gummi Wimmer West GmbH | Method to produce pharmaceutical stopper pistons or the like |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0294127A2 (en) * | 1987-05-29 | 1988-12-07 | Daikyo Gomu Seiko Ltd. | Resin-laminated rubber stopper |
EP0294127A3 (en) * | 1987-05-29 | 1990-05-30 | Daikyo Gomu Seiko Ltd. | Improvements in resin-laminated rubber stoppers |
EP0450096A1 (en) * | 1989-10-26 | 1991-10-09 | Nissho Corporation | Rubber plug for vial |
EP0450096A4 (en) * | 1989-10-26 | 1992-04-01 | Nissho Corporation | Rubber plug for vial |
EP0744351A2 (en) * | 1995-05-25 | 1996-11-27 | Showa Denko Kabushiki Kaisha | Stopper assembly for a container for aqueous infusion and a method for making thereof |
EP0744351A3 (en) * | 1995-05-25 | 1996-12-04 | Showa Denko Kabushiki Kaisha | Stopper assembly for a container for aqueous infusion and a method for making thereof |
US5853094A (en) * | 1995-05-25 | 1998-12-29 | Showa Denko K. K. | Stopper assembly for a container for aqueous infusion and a method of making thereof |
EP1020277A1 (en) * | 1999-01-11 | 2000-07-19 | Daikyo Seiko, Ltd. | Method for manufacturing laminated rubber closure and laminated rubber closure produced thereby |
DE10309348A1 (en) * | 2003-03-03 | 2004-09-23 | Chromtech Gesellschaft für analytische Meßtechnik mbH | Sample holder for chromatography analysis has polytetrafluoroethylene cap and closure with sealed outlet channel |
DE10309348B4 (en) * | 2003-03-03 | 2005-05-04 | Chromtech Gesellschaft für analytische Meßtechnik mbH | Withdrawal system consisting of a thermodesorption sample container and a needle unit |
EP1649932A1 (en) * | 2004-10-20 | 2006-04-26 | Agilent Technologies Inc. a Delaware Corporation | Sealing devices |
EP1760002A1 (en) * | 2005-08-31 | 2007-03-07 | West Pharmaceutical Services Deutschland Gmbh & Co. KG | Pharmaceutical bottle or similar container |
EP1792657A1 (en) * | 2005-12-01 | 2007-06-06 | Eppendorf Ag | Container with lid |
DE102005058399A1 (en) * | 2005-12-01 | 2007-06-14 | Eppendorf Ag | Deckelgefäß |
JP2007153446A (en) * | 2005-12-01 | 2007-06-21 | Eppendorf Ag | Vessel with cover |
EP2431295A1 (en) * | 2010-09-17 | 2012-03-21 | Daikyo Seiko, Ltd. | A rubber plug for a medical vial container |
US8499957B2 (en) | 2010-09-17 | 2013-08-06 | Daikyo Seiko Ltd. | Rubber plug for a medical vial container |
EP3243625B1 (en) * | 2016-05-11 | 2019-08-07 | Sumitomo Rubber Industries, Ltd. | Medical rubber stopper and method for producing medical rubber stopper |
Also Published As
Publication number | Publication date |
---|---|
JPS6131441U (en) | 1986-02-25 |
JPH0340297Y2 (en) | 1991-08-23 |
EP0172613A3 (en) | 1987-11-19 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
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Effective date: 19870403 |
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Free format text: STATUS: EXAMINATION IS IN PROGRESS |
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17Q | First examination report despatched |
Effective date: 19890117 |
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18D | Application deemed to be withdrawn |
Effective date: 19930907 |
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APAF | Appeal reference modified |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SUDO, DENPEI |