EP2206654B1 - Vial rubber-stopper - Google Patents
Vial rubber-stopper Download PDFInfo
- Publication number
- EP2206654B1 EP2206654B1 EP08838829.3A EP08838829A EP2206654B1 EP 2206654 B1 EP2206654 B1 EP 2206654B1 EP 08838829 A EP08838829 A EP 08838829A EP 2206654 B1 EP2206654 B1 EP 2206654B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flange
- vial
- cylindrical leg
- ring
- rubber stopper
- 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.)
- Active
Links
- 229920001971 elastomer Polymers 0.000 claims description 127
- 239000005060 rubber Substances 0.000 claims description 126
- 229920003002 synthetic resin Polymers 0.000 claims description 34
- 239000000057 synthetic resin Substances 0.000 claims description 34
- 238000000465 moulding Methods 0.000 claims description 28
- 230000002093 peripheral effect Effects 0.000 claims description 26
- 238000003475 lamination Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 4
- 239000010408 film Substances 0.000 description 40
- 238000007789 sealing Methods 0.000 description 17
- 239000000126 substance Substances 0.000 description 14
- 239000007788 liquid Substances 0.000 description 12
- 238000010030 laminating Methods 0.000 description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000004447 silicone coating Substances 0.000 description 5
- 239000005062 Polybutadiene Substances 0.000 description 4
- -1 SEBS Polymers 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 229920005549 butyl rubber Polymers 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229920002857 polybutadiene Polymers 0.000 description 4
- 229920002545 silicone oil Polymers 0.000 description 4
- 229920002725 thermoplastic elastomer Polymers 0.000 description 4
- 238000001291 vacuum drying Methods 0.000 description 4
- 229920002367 Polyisobutene Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229920003049 isoprene rubber Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 229920005555 halobutyl Polymers 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 235000014692 zinc oxide Nutrition 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- ROGIWVXWXZRRMZ-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1 ROGIWVXWXZRRMZ-UHFFFAOYSA-N 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920003217 poly(methylsilsesquioxane) Polymers 0.000 description 1
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Images
Classifications
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- 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
- B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
- B65D39/0005—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers made in one piece
- B65D39/0023—Plastic cap-shaped hollow plugs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/1468—Containers characterised by specific material properties
-
- 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
- B65D2539/00—Details relating to closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
- B65D2539/001—Details of closures arranged within necks or pouring opening or in discharge apertures, e.g. stoppers
- B65D2539/003—Details of closures arranged within necks or pouring opening or in discharge apertures, e.g. stoppers provided with sealing flanges or ribs
-
- 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
- B65D2539/00—Details relating to closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
- B65D2539/001—Details of closures arranged within necks or pouring opening or in discharge apertures, e.g. stoppers
- B65D2539/008—Details of closures arranged within necks or pouring opening or in discharge apertures, e.g. stoppers with coatings or coverings
Definitions
- This invention relates to a rubber stopper used to seal an opened portion of vials and syringes as medical vessels which will be hereinafter simply referred to as vial and, in particular, to a rubber stopper in which stoppering properties can be improved without damaging sealing properties in the absence of silicone coating.
- a stopper body used to seal an opened portion of chemical or medical liquid-containing vial it is required for a stopper body used to seal an opened portion of chemical or medical liquid-containing vial to meet various quality requirements such as sealing properties, gas barrier properties, chemical resistance, needling resistance, low reactivity and the like and, in general, a rubber stopper body of high elastic deformation is frequently employed as a product sufficient to satisfy these requirements, which will be hereinafter referred to as rubber stopper.
- a syringe needle is often stuck through the rubber stopper from an upper surface thereof to suck up a chemical or medical liquid in a vial.
- the rubber stopper should meet the quality requirement of the transfusion rubber stopper test according to the Japanese Pharmacopoeia, XV edition and, in speciality, should pass the elution test under a condition of 121°C for one hour using a heat resistant high pressure steam sterilizer.
- thermoplastic styrene elastomers such as SEBS
- thermoplastic elastomers mainly comprising polyisobutylene and polybutadiene and the like as a material for vial rubber stopper which meets the requirement as described above.
- a cylindrical leg portion is protruded downward from a disc-like top portion to form a flange upward, a diameter of the leg portion being smaller than that of the disc.
- the cylindrical leg portion of the vial rubber stopper is driven into an opened portion of the vial so that a bottom surface of the flange of the disc-like top portion is stuck firmly to an end surface of the opened portion.
- the peripheral root portion is left as a naked rubber stock, thereby improving sealing properties of the vial, while the rubber stopper sometimes comes up to the surface after it is driven into the vial opened portion due to strong friction and repulsion of the naked rubber stock, thereby causing such problems that the stopper might be driven repeatedly plural times or is hardly to drive completely.
- a vial rubber stopper GP as shown in Fig. 5 has been conventionally developed and used widely.
- a wide belt-like ring protrusion R is formed on a cylindrical leg portion L to keep sealing properties of a vial opened portion, while an inactive film lamination is applied on surfaces of the ring protrusion R and a portion as a periphery of a disc-like top portion T other than a bottom surface T2 of a flange T1 as shown in Fig. 5 by a dark mesh pattern.
- the bottom surface T2 of the flange T1 of the rubber stopper GP is not laminated to leave it as a naked rubber stock, while the upper ring protrusion R of the cylindrical leg portion L is driven into the vial opened portion as shown in Fig. 5 by a faint mesh pattern.
- a vial rubber stopper according to the preamble of claim 1 is known from JP 5 038785 A .
- This invention has been completed to solve conventional problems as described above and accordingly it is an object of the invention is to provide a vial rubber stopper of high sealing properties, gas barrier properties, chemical resistance and needling resistance as well as low reactivity, having improved productivity in the pharmaceutical manufacturing process and mechanical conveying properties, which is prepared without silicone coating.
- At least one ring-like raised portion of a slightly larger diameter than that of the vial rubber stopper is formed on the outer peripheral surface of the cylindrical leg portion, which surface is laminated with an inactive synthetic resin film of low friction resistance such as fluororesins.
- the under-flange ring portion of the cylindrical leg portion is left as a naked rubber stock, which is connected to the bottom surface of the flange arranged around the cylindrical leg portion, distance from the flange bottom surface to the nearest ring-like raised portion is in the range of 1/3 to 5 times of overall height of the ring-like raised portion.
- the ring-like raised portion arranged nearest to the flange bottom surface is pushed against an inner peripheral surface of vial opened portion to cause a shrinkage in diameter when the cylindrical leg portion is driven into the vial opened portion, so that the under-flange ring portion as a naked rubber stock never comes in contact with the inner peripheral surface of the vial opened portion.
- improved sealing properties and high stoppering properties can be secured by the present vial rubber stopper without applying conventional silicone coating.
- the bottom surface in such a naked situation is firmly joined to the surface of the vial opened portion when the present vial rubber stopper is driven into the vial end portion, thereby high sealing properties being secured.
- the upper and bottom surfaces of the disc-like top portion other than the flange bottom surface, the maximum diametral portion of the flange-peripheral surface and the surface of the cylindrical leg portion other than the under-flange ring portion are laminated with an inactive synthetic resin film such as fluororesins, thereby mutual sticking of rubber stopper being avoided to improve mechanical conveying properties thereof.
- a vial rubber stopper 1 as an embodiment of the invention comprises a shape in which a cylindrical leg portion 3 is coaxially protruded from a bottom surface of a thick top disk portion 2, a diameter thereof being smaller than that of the than that of the disc-like top portion and a surrounding edge of the disc-like top portion 2 being overhung from upward of the cylindrical leg portion 3 to form a flange 2A.
- An under-flange ring portion 3A is divided in a circular form of predetermined width on an upper end portion of the cylindrical leg portion 3, which is connected to a bottom surface 2A1 of the flange 2A.
- First and second ring-like raised portions 3B and 3C are formed on a peripheral surface of the cylindrical leg portion 3 below the under-flange ring portion 3A at a predetermined interval in the vertical axial direction and extended in the circumferential direction parallel to the under-flange ring portion 3A.
- a vial rubber stopper 1 shown in Fig. 2 as a modified example of the embodiment of Fig. 1 there are formed a cutaway portion 3E on the cylindrical leg portion 3 and a separate-type raised portion 3D on the outer peripheral surface thereof.
- the cutaway portion 3E is formed by cutting the cylindrical leg portion 3 upwardly from a tip side opposed to the under-flange ring portion 3A to a line between the first and the second ring-like raised portions 3B and 3C in the axial direction at a predetermined interval.
- the cutaway portion 3E is shown only one in Fig. 2 but may be formed plurally and, in the case of plurality, each one may be the same size and opposing each other, or may be random size and arranged randomly.
- the separate-type raised portion 3D is formed below the second ring-like raised portion 3C parallel thereto and divided in the circumferentially direction, which cross-sectional shape is, for example, nearly triangle to keep stability.
- Cross-sectional shape of the first ring-like raised portion 3B arranged above the cutaway portion 3E and the second ring-like raised portion 3C cut off by the cutaway portion 3E may be semicircular, semi-oval, triangle, rectangular, trapezoid or any others.
- Those potions 3B and 3C shown in Fig. 1 may also be shaped similarly.
- the first ring-like raised portion 3B arranged above the cutaway portion 3E may be not only one but formed plurally.
- a maximum outer diameter of the first and the second ring-like raised portions 3B and 3C shown in Fig. 1 and that of similar portions 3B and 3C shown in Fig. 2 are slightly larger, and more definitely about 1 % to 30 % larger, than a caliber of a vial B opened portion shown in Fig. 4 , i.e., diameter of an opened inner peripheral portion B1.
- An increase in maximum outer diameter as described above makes it possible to secure high sealing properties and stoppering properties when the vial rubber stopper is driven into the vial B opened portion.
- Such the increase in diameters of the first and the second ring-like raised portions 3B and 3C varies depending on elasticity of a rubber stock to be used for the rubber stopper 1 and a material of the vial B (glass or synthetic resins) and is not necessarily fixed, although it is desirable to increase diameters thereof in the range of about 1 % to 30 % compared with a caliber of the vial B when elasticity of a synthetic resin used as a material of the vial B is about 2 to 2.5 GPa and Shore A hardness of a rubber stock used as the rubber stopper 1 is about 15 to 45.
- the uppermost first ring-like raised portion 3B is preferably arranged to be fallen in a length range from 1/3 to 5 times of overall height thereof in the downward direction from an upper edge of the under-flange ring portion 3A which coincides in arrangement with the bottom surface 2A1 of the flange 2A. That is to say, the shortest interval of the nearest first ring-like raised portion 3B from the bottom surface 2A1 of the flange 2A is preferably fallen in the range from 1/3 to 5 times of overall height thereof.
- the rubber stock of the under-flange ring portion 3A comes in contact with the inner peripheral surface B1 of the vial B opened portion, thereby causing failure in stoppering and loosing sealing properties of the vial B.
- An optimum location of the first ring-like raised portion 3B varies depending on hardness and size of the rubber stopper 1.
- Hardness (Shore A) of a rubber stock within the optimum designed value is about 15 to 45 and size of the rubber stopper 1 is about 5 to 50 mm in diameter.
- the bottom surface 2A1 of the flange 2A is left as a naked rubber stock. Further, the bottom surface 2A1 is molded to adhere to an edge surface B2 of the opened portion of the vial B shown in Fig. 4 .
- the edge surface B2 of the opened portion is generally shaped into flat and, accordingly, the bottom surface 2A1 of the flange 2A is preferably flat.
- the upper surface of the disc-like top portion 2 including the upper surface of the flange 2A, the maximum diametral portion 2A2 of the peripheral surface of the flange 2A, the bottom surface of the disc-like top portion 2 arranged in the cylindrical leg portion 3 and the surface including the outer and inner peripheral surfaces of the cylindrical leg portions 3 other than the under-flange ring portion 3A are laminated with a synthetic resin film as shown in Fig. 1 or Fig. 2 (see, mesh patterns drawn therein).
- the bottom surface 2A1 of the flange 2A and the surface of the under-flange ring portion 3A of the cylindrical leg portion 3 are left as a naked rubber stock.
- An upper edge of the synthetic resin film laminated on the outer peripheral surface of the cylindrical leg portion 3 is fit upward over the first ring-like raised portion 3B, which the nearest location to the bottom surface 2A1 of the flange 2A, so that the under-flange ring portion 3A is divided between the upper edge and the bottom face 2A1.
- the upper edge of the synthetic resin film is preferably fit downward of the bottom surface 2A1 of the flange 2A at an interval of 0.5 mm or more so as to leave vertical width of 0.5 mm or more for the under-flange ring portion 3A.
- the cutaway portion 3E formed on the cylindrical leg portion 3 of the vial rubber stopper 1 shown in Fig. 2 is effective as will be described in the following.
- a solvent or water component in a medical liquid charged in the vial B shown in Fig. 4 should be removed, the vial B with the medical liquid charged therein is placed in an appropriate device such as vacuum dryer while keeping the vial rubber stopper 1 in a half-driven situation.
- the solvent or water component contained in the vial B is evaporated and suctioned out through the cutaway portion 3E when the vacuum dryer is operated, the medical liquid being thus vacuum dried.
- Such a half-driven situation of the vial rubber stopper 1 can be kept satisfactorily by means of the separate-type raised portion 3D which is separated in the circumferential direction and has a triangle cross-section.
- Fig. 3 is an illustration of vial rubber stopper 1 shown in Figs. 1 and 2 in which the rubber stopper 1 is placed in a mold in the course of molding.
- the cylindrical leg portion 3 is subjected to press molding to monolithically mold (laminate) with a synthetic resin film (drawn as mesh patterns in Fig. 3 ), punched out and set in a bottom force (not shown).
- a material of the disc-like top portion 2 is placed on the cylindrical leg portion 3 in the above mentioned situation, while a synthetic resin film is put on the stock which is then press-molded by means of a force (not shown) . Accordingly, press molding of the disc-like top portion 2, lamination of the disc-like top portion 2 with the synthetic resin film and unification of the disc-like top portion 2 and the cylindrical leg portion 3 are conducted at the same time.
- the laminated disc-like portion 2 is drawn by mesh patterns in Fig. 3 and implies a continuous surface ranging from the upper surface of the disc-like top portion 2, which includes the upper surface of the flange 2A, and the maximum diametral portion 2A2 of the peripheral surface of the flange 2A.
- the synthetic resin film used to laminate the cylindrical leg portion 3 and that of used to laminate the maximum diametral portion 2A2 of the peripheral surface of the flange 2A may be the same or different.
- a fluororesin film is preferably used either in the case of same or different, and different fluororesin films are preferably selected in the case of different.
- An Ultra High Molecular Weight polyethylene resin film is also used preferably as a synthetic resin film other than a fluororesin form standpoints of thermal resistance, chemical resistance, etc.
- each rubber stock does not exert any bad influence upon their unification, if the same or different rubber stock useful for unifying these two portions 2 and 3 is used even when the synthetic resin film to be laminated is the same or different.
- the rubber stock for comprising the disc-like top portion 2 and the cylindrical leg portion 3 of the present vial rubber stopper 1 is not restricted to a specific one, if the material is tough and has appropriate hardness, impact resilience and other excellent properties such as thermal resistance, aging resistance, chemical resistance, gas barrier properties, low eluting properties and low reactivity.
- Rubber stocks used in the present invention include, for example, butyl rubber, i.e., isoprene-isobutylene copolymer, halogenated butyl rubber prepared by chlorinating or brominating butyl rubber, acrylonitrile-butadiene copolymer rubber, isoprene terpolymer, isoprene rubber, butadiene rubber, styrene-butadiene rubber, ethylene-propylene rubber, ethylene-propylene-diene rubber, chloro-sulfonated polystyrene, ethylene-vinyl acetate copolymer, styrene-ethylene-butylene-styrene (SEBS) thermoplastic elastomer, thermoplastic elastomer comprising polyisobutylene and polybutadiene as a main component, and a rubber stock in which synthetic rubber such as styrene-isoprene rubber or natural rubber is used as a main component and
- butyl rubber, halogenated butyl rubber, and thermoplastic elastomer comprising polyisobutylene or polybutadiene as a main component are preferable rubber stocks not only for a reason that they meet the requirements as described above but from a standpoint of their high gas-impermeability, ozone resistance, aging resistance and adhesive properties.
- a fluororesin film is preferably used as a synthetic resin film for laminating the present vial rubber stopper 1, which can be laminated on the rubber stock as an inactive synthetic resin film and has high thermal resistance and chemical resistance as well as lower frictional resistance compared with that of the rubber stock.
- the fluororesin includes, for example, tetrafluoroethylene resin (PTFE), tetrafluoroethylen-perfluoroethylene copolymer (PFA), tetrafluoroethylene-hexafluoroethylene copolymer (FEP), tetrafluoroethylene-ethylene copolymer (ATFE), polytrichlorotrifluoroethylene (PCTFE), polyfluorinated vinylidene (PVDF), polyfluorinated vinyl (PVF), etc.
- PTFE tetrafluoroethylene resin
- PFA tetrafluoroethylen-perfluoroethylene copolymer
- FEP tetrafluoroethylene-hexafluoroethylene copolymer
- ATFE tetrafluoroethylene-ethylene copolymer
- PCTFE polytrichlorotrifluoroethylene
- PVDF polyfluorinated vinylidene
- PVF polyfluorinated vinyl
- Tetrafluoroethylene resin which will be hereinafter referred to as PTFE, is especially preferable by the following reasons.
- PTFE is considerably stable so that it does not solve or swell almost all chemicals, and is one of the most thermally resistant organic materials, simply results in transparent gel but does not exhibit melt-flow characteristics when it is melted at the melting point of 327 °C and has so high continuous working temperature as about 260 °C, while its surface is extremely hydrophobic, oil-repellent and non-adhesive and exhibits low frictional resistance and high sliding properties. Because of intrinsic advantages as described above, PTFE is sufficiently resistant to high temperature sterilizing treatments in the course of pharmaceutical and other processes.
- PTFE laminated on the vial rubber stopper 1 comes in contact with chemicals charged in the vial for a long period of time, the laminated material does not absorb the chemicals and nothing is eluted from the lamination, thereby proving chemical stability thereof.
- PTFE is sufficiently slidable to pressingly drive the rubber stopper into the vial after charging chemicals therein, so that it possesses characteristics to meet physical and chemical properties to be expected as a surface laminating film material, which is used to laminate sealing stoppers for sealing vial containers.
- An Ultra High Molecular Weight polyethylene resin film may also be preferably used as a laminating material other than the fluororesin film from a standpoint of thermal resistance, chemical resistance, etc.
- the Ultra High Molecular Weight polyethylene refers to those polyethylene polymers of about 100 million to 700 million in molecular weight.
- Thickness of the inactive synthetic resin film such as the above mentioned fluororesin film is preferably about 0.001 to 0.3 mm, more preferably 0.01 to 0.2 mm and most preferably 0.02 to 0.15 mm, and the thickness fallen in this range lowers voids of thin film, thereby reducing the defectiveness level of products with advantage.
- An excessively thinner film makes it difficult to yield the products and would cause processing failure and inadequate certification of products, while excessively thicker one raises rigidity of the film extremely so that sealing properties and needling resistance of a completed rubber stopper deteriorate inadequately.
- a surface of the synthetic resin film is preferably cleaned or treated by means of, primer treatment, corona discharge, plasma discharge, glow discharge, arc discharge, sputtered etching and the like, thereby adhesion between the film and the rubber stock being strengthened.
- the preferred adhesive strength is about 1 to 30 kg/cm.
- the present vial rubber stopper 1 is molded in the following manner.
- the cylindrical leg portion 3 which has been laminated by press molding in advance, is set in the bottom force (not shown).
- a molding stock of the disc-like top portion 2 and a laminating synthetic resin film are placed on the upper surface of the leg portion 3, followed by press molding of the synthetic resin film and the molding stock by means of a force (not shown) .
- Molding of the disc-like top portion 2, lamination of the synthetic resin film on the leg portion 2 and unification of the cylindrical leg portion 3 are conducted simultaneously.
- the laminating synthetic resin film is placed on the bottom force (not shown) for molding the cylindrical leg portion 3 first of all, on which an uncured rubber stock to be used to mold the cylindrical leg portion 3 is placed.
- the cylindrical leg portion 3 is molded and cured by means of press molding and, at the same time, a continuous surface covering over the inner peripheral surface of the cylindrical leg portion 3 and the outer peripheral surface thereof is laminated, the outer peripheral surface including the first ring-like raised portion 3B, the second ring-like raised portion 3C and the separate-type raised portion 3D.
- the bottom force is opened to take out the cylindrical leg portion 3 which is laminated by the synthetic resin film and cut into a predetermined shape.
- the thus laminated and cut cylindrical leg portion 3 is cleaned and set in a bottom force (not shown), while the uncured rubber stock to be used for molding the disc-like top portion 2 is placed thereon, and then the laminating synthetic resin film is put on the upper surface of the rubber stock, followed by clamping by means of a force (not shown) and press-molding under pressure of about 50 to 150 kg/cm 2 at temperature ob about 150 to 200 °C.
- molding of the disc-like top portion 2 and lamination thereof are conducted by means of the molding tool for molding the disc-like top portion 2, but there may be used the bottom force for molding the cylindrical leg portion 3 in another embodiment.
- each rubber stock to be used for molding the cylindrical leg portion 3 and the disc-like top portion 2 may either be the same composition or different one as described above, if each rubber stock can be unified.
- FIG. 4 An applied example of the present vial rubber stopper 1 is shown in Fig. 4 .
- the cylindrical leg portion 3 of the present vial rubber stopper 1 is inserted and driven into the opened portion of the vial B along the inner peripheral surface B1 to adhere the bottom surface 2A1 of flange 2A of the disc-like top portion 2 to the edge surface B2 of the opened portion.
- the disc-like top portion 2 is covered with an aluminum cap A to caulk around the opened portion of the vial B and seal it. Complete seal of the vial B is thus secured.
- a plate stock of uncured rubber composition shown in Table 1 was used as a rubber stock for molding the cylindrical leg portion 3 and the disc-like top portion 2.
- PTFE inactive synthetic resin
- Table 1 Composition of Rubber Stock Parts by Weight butyl rubber 100 wet water-containing silica (1) 30 zinc oxide (2) 1.5 1,1-bis(t-butylperoxide)-3,3,5-trimethylhexane (3) 2 (1) Nipushiiru ER; available from Nippon Sirika Kogyo (2) Active Chinese White AZO; available from Seido Kagaku Kogyo (3) Perhexane 3M-40; available from NOF Corporation
- maximum outer diameters (maximum height of the raised portions) of the first and the second ring-like raised portions 3B and 3C as well as the separate-type raised portion 3D are sums of doubled dimensions of their overall height shown in Table 2 and diameter of the cylindrical leg portion 3 as shown in Table 2, respectively.
- the plate stock of uncured rubber composition shown in Table 1 and the laminating synthetic resin film were placed thereon and then press molding of the disc-like top portion 2, lamination of the synthetic resin and unification of the disc-like top portion 2 and the cylindrical leg portion 3 were conducted at the same time under the same pressure and temperature condition as described above, followed by opening of the bottom force, cutting as shown in Fig. 3 by the line "x" and washing.
- the thus yielded vial rubber stopper 1 was driven into the opened portion of commercial vials B and it was found that every tested rubber stopper 1 was fitted therein satisfactorily.
- the vials B were charged with water and kept in a half-stoppered situation with the rubber stopper 1, followed by drying in a vacuum dryer under pressure of 0.5 kg/cm 2 and at temperature of 25 °C for 24 hours.
- a conventional vial rubber stopper GP shown in Fig. 5 was used to repeat a stoppering test and a vacuum drying test in a similar manner as described above. As a result, it was found that a stoppering process was performed unsatisfactorily in the stoppering test because of considerable frictional resistance caused by rubber stock used as a wide belt ring-like raised portion R, while in the vacuum drying test, vacuum drying itself was performed favorably but the stoppering process after vacuum drying was not proceeded successfully.
- the present vial rubber stopper is conveniently applicable to various vials provided with an opened portion of different calibers. Further, the present stopper can be applied not only to embodiments in which an injection needle pierces the top portion but to those cases in which no needle pierces the top portion.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Closures For Containers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007270871 | 2007-10-18 | ||
PCT/JP2008/069393 WO2009051282A1 (ja) | 2007-10-18 | 2008-10-20 | バイアル用ゴム栓 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2206654A1 EP2206654A1 (en) | 2010-07-14 |
EP2206654A4 EP2206654A4 (en) | 2011-01-05 |
EP2206654B1 true EP2206654B1 (en) | 2015-07-08 |
Family
ID=40567532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08838829.3A Active EP2206654B1 (en) | 2007-10-18 | 2008-10-20 | Vial rubber-stopper |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100206836A1 (ja) |
EP (1) | EP2206654B1 (ja) |
JP (1) | JP5479104B2 (ja) |
DK (1) | DK2206654T3 (ja) |
ES (1) | ES2545204T3 (ja) |
HU (1) | HUE026463T2 (ja) |
WO (1) | WO2009051282A1 (ja) |
Families Citing this family (20)
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WO2011126793A2 (en) * | 2010-03-30 | 2011-10-13 | Advanced Technology Materials, Inc. | Container sealing system |
DE102011050983A1 (de) | 2010-09-09 | 2012-03-15 | Helvoet Pharma Belgium N.V. | Verschlussstopfen für pharmazeutische Anwendungen |
JP5758098B2 (ja) * | 2010-09-17 | 2015-08-05 | 株式会社大協精工 | 医薬品バイアル用ゴム栓 |
JP6243096B2 (ja) | 2011-11-16 | 2017-12-06 | 株式会社大協精工 | バイアル用ゴム栓 |
AU342058S (en) * | 2012-03-12 | 2012-04-23 | Logue & Co Pty Ltd | Measuring cap |
CN102813522B (zh) * | 2012-07-29 | 2014-07-16 | 宁波江东峻峰医疗器械技术咨询有限公司 | 加载型斜面扩充式帽塞紧固机构 |
ITMI20121793A1 (it) * | 2012-10-23 | 2014-04-24 | Copan Italia Spa | Elemento di chiusura di un contenitore per fluidi biologici |
KR101262963B1 (ko) | 2013-03-15 | 2013-05-09 | (주)효선전기 | 기밀 패킹구조를 갖는 마개 |
DE102013214102A1 (de) * | 2013-07-18 | 2015-02-19 | Bayerische Motoren Werke Aktiengesellschaft | Klebehilfe und Verfahren zum Verkleben von Bauteilen |
KR200475950Y1 (ko) * | 2014-07-17 | 2015-01-16 | 최덕규 | 밀폐 마개 및 이를 이용한 저장 용기 |
ES2760008T3 (es) * | 2014-08-07 | 2020-05-12 | Vinventions Usa Llc | Cierre para un recipiente de retención de producto |
WO2016048964A1 (en) | 2014-09-24 | 2016-03-31 | Q Holding Company | Stopper for medicament containers |
CN106256707A (zh) * | 2015-06-19 | 2016-12-28 | 镇江耀华密封电器有限公司 | 一种油桶用密封盖 |
WO2017159832A1 (ja) * | 2016-03-18 | 2017-09-21 | テルモ株式会社 | 薬物充填済み合成樹脂製アンプル |
JP6699349B2 (ja) * | 2016-05-23 | 2020-05-27 | 中国電力株式会社 | 腕金用営巣防止具 |
IT201700047199A1 (it) * | 2017-05-02 | 2018-11-02 | Goglio Spa | Tappo a pressione e contenitore ermetico dotato di tale tappo a pressione |
WO2022271578A1 (en) * | 2021-06-21 | 2022-12-29 | Vertice Pharma Llc | Adapter for clinical, medical and laboratory containers |
USD1009627S1 (en) * | 2021-12-17 | 2024-01-02 | Stasis Preservation LLC | Bottled beverage preservation cap |
USD977973S1 (en) | 2022-02-08 | 2023-02-14 | Brendan Kutcher | Container plug |
USD979404S1 (en) | 2022-06-28 | 2023-02-28 | Brendan Kutcher | Container plug |
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FR2416848A1 (fr) * | 1978-02-08 | 1979-09-07 | Rumpler Jean Jacques | Bouchon de recipient de produits medicamenteux |
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JPS5747637A (en) * | 1980-09-06 | 1982-03-18 | Daikyo Gomme Seikou:Kk | Manufacture of laminate rubber stopper |
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JPS592742A (ja) * | 1982-06-25 | 1984-01-09 | 藤沢薬品工業株式会社 | バイアル用栓体 |
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EP0204486B1 (en) * | 1985-05-28 | 1990-10-17 | Daikyo Gomu Seiko Ltd. | Resin-laminated rubber plugs and manufacture thereof |
JP2545540B2 (ja) * | 1987-05-29 | 1996-10-23 | 株式会社 大協精工 | 両面ラミネ−トゴム栓 |
DE3744174A1 (de) * | 1987-12-24 | 1989-07-06 | Helvoet Pharma | Gefriertrocknungs-stopfen |
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JP2002065809A (ja) * | 2000-08-25 | 2002-03-05 | Daikyo Seiko Ltd | バイアル用栓体 |
JP2002209975A (ja) | 2001-01-19 | 2002-07-30 | Daikyo Seiko Ltd | 医薬バイアル用ラミネートゴム栓 |
JP2003128095A (ja) * | 2001-10-24 | 2003-05-08 | Ohtsu Tire & Rubber Co Ltd :The | 医薬用ゴム栓およびその製造方法 |
-
2008
- 2008-10-20 WO PCT/JP2008/069393 patent/WO2009051282A1/ja active Application Filing
- 2008-10-20 ES ES08838829.3T patent/ES2545204T3/es active Active
- 2008-10-20 US US12/734,186 patent/US20100206836A1/en not_active Abandoned
- 2008-10-20 DK DK08838829.3T patent/DK2206654T3/en active
- 2008-10-20 JP JP2009538288A patent/JP5479104B2/ja active Active
- 2008-10-20 HU HUE08838829A patent/HUE026463T2/en unknown
- 2008-10-20 EP EP08838829.3A patent/EP2206654B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
HUE026463T2 (en) | 2016-05-30 |
JPWO2009051282A1 (ja) | 2011-03-03 |
EP2206654A4 (en) | 2011-01-05 |
US20100206836A1 (en) | 2010-08-19 |
DK2206654T3 (en) | 2015-08-24 |
WO2009051282A1 (ja) | 2009-04-23 |
EP2206654A1 (en) | 2010-07-14 |
ES2545204T3 (es) | 2015-09-09 |
JP5479104B2 (ja) | 2014-04-23 |
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