US3814274A - Linerless closure for a container - Google Patents
Linerless closure for a container Download PDFInfo
- Publication number
- US3814274A US3814274A US00241155A US24115572A US3814274A US 3814274 A US3814274 A US 3814274A US 00241155 A US00241155 A US 00241155A US 24115572 A US24115572 A US 24115572A US 3814274 A US3814274 A US 3814274A
- Authority
- US
- United States
- Prior art keywords
- container
- neck
- sleeve
- annular
- top wall
- 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 - Lifetime
Links
- 239000011324 bead Substances 0.000 claims abstract description 54
- 238000007789 sealing Methods 0.000 claims description 26
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 210000003739 neck Anatomy 0.000 description 44
- 230000000694 effects Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 6
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
- B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
- B65D41/0428—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a collar, flange, rib or the like contacting the top rim or the top edges or the external surface of a container neck
Definitions
- a linerless closure for a container has a top wall with a cylindrical skirt adapted to engage the neck of a container.
- An annular bead is provided inside the top wall of the closure and aligned with the wall of the neck of the container, and a "preben't annular sleeve extends downwardly-from the top wall of the closure, radially inwardly of. the bead, the sleeve extending downwardly and outwardly in a first arcuate portion and thence downwardly and outwardly in a tapered portion that extends into axial alignment with the bead.
- linerless sealing closures have been provided for sealing the threaded necks of various containers.
- Such closures are generally molded from a resilient plastic material, such as polypropylene.
- the closures generally have a top wall from which a cylindrical skirt extends, the skirt having internal threads adapted to be fitted over the threads of the neck of the container.
- Resilient annular beads are integrally molded with the cap on the inner surface thereof, to provide a tight seal with the end of the neck of the container when the closure is tightened thereon.
- Containers frequently have uneven upper rim surfaces, however, as a consequence many such linerless sealing closures do not have sufficient flexibility to seal the containers tightly and withstand repeatedsealing and unsealing operations without deformation.
- annular reslient bead on the underside of the top wall and concentric with the threaded skirt.
- the annular resilient bead has a median diameter greater than the diameter of the inner wall of the neck of the container, but less than the diameter of the outer wall of the neck.
- the closure member of the above patent provides an annular resilient sleeve positioned on the underside of the top wall within the annular resilient bead, the sleeve being joined to the top wall at its inner peripheral edge, and extending therefrom angularly downwardly from the top wall and outwardly toward the cylindrical skirt.
- the sleeve thus is in the form of a hollow truncated cone tapering outwardly from its point of attachment to the top wall.
- the slant height of the sleeve from its inner peripheral edge to its outer peripheral edge is greater than the radial distance between the inner peripheral edge thereof and the bead.
- the sleeve then is supported at its inner peripheral edge by its attachment to the top wall, and is supported at a second point, generally close to its outer peripheral edge, by the resilient annular bead, the rim of the neck of the container being maintained in contact with the resilient sleeve generally intermediate these points, in order to create an effective sealing relationship.
- the linerless seal as above described is satisfactory in many applications, it has been found that certain problems arise when a seal of this type is employed on a container having a large neck diameter. As the diameter of the container neck is increased, the circumferential dimension of the seal is of course also increased in the cap, and, without changing other parameters of the seal, it is apparent that the force required to deform the sleeve also increases.
- the above'object can be attained by initially forming the sealing sleeve to have a shape that more nearly conforms to its final sealing position, i.e., in effect to a prebent" configuration, so that less torque is required to deform the sealing sleeve to its sealing position when on the neck of the container.
- the amount of necessary deformation of the sealing sleeve to form the effective seal is thereby reduced, and no sacrifice is necessary with respect to the resilience of the sealing sleeve itself.
- the amount of torque required to effect the seal is reduced, there is less danger that an individual will apply excessive torque to the closure to exceed the elastic limit of the material of the sealing sleeve.
- FIG. 1 is a top view of a linerless closure according to the invention
- FIG. 2 is an enlarged cross sectional view of the cap of FIG. 1 taken along the lines 2-2, and illustrating the closure in position on the neck of a container but not sealed thereto;
- FIG. 3 is an enlarged cross sectional view of a portion of the closure of FIG. 2 in the same position;
- FIG. 4 is an enlarged view of the closure of FIG. 2 illustrated in sealed position with the sealing sleeve engaging the top of the neck of the container;
- FIG. 5 is a cross sectional view of the closure of FIG. 2 taken along the lines 5-5.
- FIGS. 1 and 2 therein is illustrated a closure according to one embodiment of the invention comprised of a top wall 10, which may be in the form ofa circular disk, and having a cylindrical skirt 11 extending from the bottom edge thereof;
- the cylindrical skirt 11 has internal threads 12 or other equivalent configurations formed therein for engaging the threads or equivalent configurations on the end of the neck 13 of a container wardly from the bottom of the top wall 10.
- the sleeve 21 is affixed to the top wall radially inwardly of the bead 20, and the bead and sleeve 21 are concentric and coaxial with respect to the axis of the skirt 11 and hence the neck of the container 14.
- annular head 20 and annular sleeve 21 are more clearly illustrated in the enlarged view of FIG. 3.
- the annular bead 20 is positioned so that it projects downwardly in line with the neck wall 13 of the container, the mean radius of the bead from the axis of the container being approximately equal to the mean radius of the neck wall of the container.
- the width of the bead is substantially less than the width of the neck of the container.
- the bottom 25 of the bead 20 is preferably generally flattened, and the sides thereof extending to the top wall of the closure are preferably tapered, with the outer wall 26 being formed at a slightly greater angle than the inner wall 27 with respect to the surface of the top wall.
- the angle between the wall 26 and the top wall 10 was about 92
- the angle between the inner wall 27 and the top wall 10 was about 105
- the width of the end surface 25 was about 0.01 inches
- the distance between the bottom 25,0f the bead and the wall 10 was about 0.008 inches.
- the bead 20 may be deformed slightly outwardly when the closure is in sealed position, with the bead 20 still retaining sufficient strength to form an end support for the end of the sleeve 21.
- the annular sleeve 21 extends from the bottom of the top wall 10 radially inwardly of the bead 20, at a position preferably inwardly of the inner wall of the neck 13 of the container.
- the sleeve 21 is generally tapered as it extends downwardly, the lower portions being bent outwardly so that the end 30 thereof is in line with the mean radius of the bead 20 from the axis of the closure.
- the inner wall 31 of the bead is formed normal to the top wall 10 at its juncture therewith, and having a generally straight end portion 32 terminating in the end 30, and a circular transition portion 33 between the end portion 32 of the wall and the top wall 10.
- the outer wall 35 of the sleeve is similarly formed, having an end portion 36 that is generally straight and joins the end 30, and a circular transition region 37 between the straight portion 36 and the junction of the sleeve 21 with the top wall 10.
- the centers of curvature of the 4 portions 33-and 35 of the sleeve 21 are approximately at the surface of the wall 10, and are outwardly of the respective portions of the sleeve 21.
- the sleeve 21 thus has the form of a prebent member extending downwardly and outwardly from the bottom of the top wall 10.
- the thickness of the base of the sleeve 21 was about 0.028 inches
- the curved portion 33 had a radius of curvature of about 0.032 inches
- the radius of curvature of the curved portion 35 was about 0.02 inches
- the straight portion 32 had an angle of about 15 with respect to the bottom surface of the top wall 10
- the straight portion 36 forms an angle'of about 25 with respect to the bottom surface of the top wall 10
- the radial distance between the bead 20 and sleeve 21 was about 0.026 inches
- the width of the bottom 30 of the projection 21, in the direction parallel to the axis of the closure was about 0.012 inches.
- the overall extension of the projection 21 from the bottom of the top wall 10 was about 0.04 inches as molded.
- FIG. 4 therein is illustrated the relationship between the closure according to the invention and the container when the closure has been drawn into sealing relationship, for example, by relative rotation of the closure with respect to the threads on the neck of the container. It is apparent that the end of the neck of the container has contacted the end of the portion 32 of the sleeve2l, and the sleeve 21 has been forced toward the top wall 10 so that the portion 36 of the outer wall of the sleeve 21 engages the end 25 of thebead 20. The bead 20 and the sleeve 21 arepositioned so that the greaterportion of the force exerted on the sleeve 21 lies between the axis of the bead 20 and the base of the sleeve 21.
- the deformation of the sleeve 21 is primarily in this region, with a minimum of stress being applied to the sleeve 21 at the region where it joins'the top wall 10. Furthermore, since the sleeve 21 was formed with a prebent configuration, the amount of torque necessary of the closure to deform the sleeve 21 to the position indicated in FIG. 4 is minimized, with the result that the closure is easier to seal, the deformation of the sleeve is minimized, and the danger of insufficient torque to effect a seal or excess torque to permanently deform the sleeve'2l are minimized.
- FIG. 5 is a cross sectional view of the closure in the position illustrated in FIG. 2, taken along the lines 55, in order to more clearly illustrate the structure therein illustrated.
- the closure of this invention may be fabricated from a variety of materials and in several different manners.
- the top wall and cylindrical skirt can be made of any material possessing the required strength and rigidity, such as any of the more common metals or the more rigid plastics.
- the bead and sleeve are preferably formed from any other well known resilient plastic materials. The material employed for the resilient sleeve, however, must not be so flexible that the rotation of the closure when brought into contact with the resilient sleeve in sealing relationship will cause the sleeve to become twisted.
- the top wall including the skirt of the closure can be fabricated as a unit, such as by casting or machining, and the prefabricated resilient annular bead and sleeve sealed in place within the skirt.
- the entire closure, including the top wall, skirt, annular resilient bead and resilient sleeve, is molded as a unit from a semiflexible, semi-rigid plastic material such as polypropylene.
- the closure in a closure for use on the neck of a container of the type wherein the closure includes a top wall and a cylindrical skirt extending therefrom for engagement with the outer wall of the neck of the container, and wherein the top wall of the closure further includes an annular resilient bead extending toward the end of the neck of the container, and an annular sleeve inwardly of the annular bead and extending into alignment with the bead so that the sleeve can engage the end of the neck of the container to form a seal and bend upwardly to engage the annular bead, the improvement wherein said annular sleeve is formed pre-bent, providing a first relatively thick portion of arcuate cross section joined to the top wall and extending therefrom with generally arcuate side walls extending downwardly and outwardly from the surface of the top wall and a tapered thinner end portion joined to the arcuate cross section portion and extending into axial alignment with said resilient bead, whereby during sealing between the sleeve and the end of
- a linerless closure for sealing a container
- the container includes a neck portion adapted to receive the closure
- the closure has a top wall and a cylindrical skirt extending therefrom for engagement with the outer wall of the neck of the container
- an annular resilient bead extends from the inner surface of the top wall in alignment with the neck of the container
- an annular sleeve extends from the surface of the top wall radially inwardly of the annular bead, the annular sleeve extending downwardly and outwardly to engage the end of the neck of the container to form a seal and being bendable to engage the bottom of the annular bead
- the annular sleeve is supported from the top wall at a relatively thick base, its free thinner en d extending t oward its point of contact with the annular bead; the improvement wherein said annular sleeve has a prebent shape when not engaging the end of the neck of I the container that has said thin end
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00241155A US3814274A (en) | 1972-04-05 | 1972-04-05 | Linerless closure for a container |
ES1975226932U ES226932Y (es) | 1972-04-05 | 1975-06-03 | Cierre sin revestimientos para envases. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00241155A US3814274A (en) | 1972-04-05 | 1972-04-05 | Linerless closure for a container |
Publications (1)
Publication Number | Publication Date |
---|---|
US3814274A true US3814274A (en) | 1974-06-04 |
Family
ID=22909475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00241155A Expired - Lifetime US3814274A (en) | 1972-04-05 | 1972-04-05 | Linerless closure for a container |
Country Status (2)
Country | Link |
---|---|
US (1) | US3814274A (es) |
ES (1) | ES226932Y (es) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4069937A (en) * | 1977-01-28 | 1978-01-24 | Owens-Illinois, Inc. | Linerless closure |
DE2756350A1 (de) * | 1977-02-04 | 1978-08-10 | Owens Illinois Inc | Futterloser verschluss |
US4351443A (en) * | 1981-05-15 | 1982-09-28 | Uhlig Gerhardt E | Dual liquid tight closures |
US5024329A (en) * | 1988-04-22 | 1991-06-18 | Siemens Aktiengesellschaft | Lockable container for transporting and for storing semiconductor wafers |
US5423444A (en) * | 1988-06-17 | 1995-06-13 | Mk Plastics Pty Ltd. | Linerless closure for carbonated beverage container |
US5439126A (en) * | 1992-07-21 | 1995-08-08 | Carnaudmetalbox Plc | One-piece plastics |
GB2311283A (en) * | 1996-03-19 | 1997-09-24 | Lawson Mardon | Cap for a container |
US5836464A (en) * | 1988-06-17 | 1998-11-17 | Closures And Packaging Services Limited | Closure for beverage container |
US6527132B1 (en) | 1997-07-14 | 2003-03-04 | Closures And Packaging Services Limited | Closure with extended seal member |
US7055708B1 (en) * | 2003-10-09 | 2006-06-06 | Owens-Illinois Prescription Products Inc. | Child-resistant package |
US20120273452A1 (en) * | 2010-01-06 | 2012-11-01 | Soehnlen Daniel P | Combined lip and shoulder seal for threaded cap |
US20220234789A1 (en) * | 2019-06-07 | 2022-07-28 | Creanova Universal Closures Limited | Closure |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3055526A (en) * | 1959-12-21 | 1962-09-25 | Robert L Plunkett | Plastic cap |
US3203571A (en) * | 1960-12-06 | 1965-08-31 | Robert L Plunkett | Self sealing cap construction |
US3286866A (en) * | 1965-04-15 | 1966-11-22 | Mack Wayne Plastics Co | Plastic cap |
US3344942A (en) * | 1966-04-05 | 1967-10-03 | Hedgewick Peter | Safety cap and container |
-
1972
- 1972-04-05 US US00241155A patent/US3814274A/en not_active Expired - Lifetime
-
1975
- 1975-06-03 ES ES1975226932U patent/ES226932Y/es not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3055526A (en) * | 1959-12-21 | 1962-09-25 | Robert L Plunkett | Plastic cap |
US3203571A (en) * | 1960-12-06 | 1965-08-31 | Robert L Plunkett | Self sealing cap construction |
US3286866A (en) * | 1965-04-15 | 1966-11-22 | Mack Wayne Plastics Co | Plastic cap |
US3344942A (en) * | 1966-04-05 | 1967-10-03 | Hedgewick Peter | Safety cap and container |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4069937A (en) * | 1977-01-28 | 1978-01-24 | Owens-Illinois, Inc. | Linerless closure |
DE2756372A1 (de) * | 1977-01-28 | 1978-08-03 | Owens Illinois Inc | Futterloser verschluss |
DE2756350A1 (de) * | 1977-02-04 | 1978-08-10 | Owens Illinois Inc | Futterloser verschluss |
US4351443A (en) * | 1981-05-15 | 1982-09-28 | Uhlig Gerhardt E | Dual liquid tight closures |
US5024329A (en) * | 1988-04-22 | 1991-06-18 | Siemens Aktiengesellschaft | Lockable container for transporting and for storing semiconductor wafers |
US6325228B1 (en) | 1988-06-17 | 2001-12-04 | Closures And Packaging Services Limited | Linerless closure for carbonated beverage container |
US20050184433A1 (en) * | 1988-06-17 | 2005-08-25 | Closures And Packaging Services Limited | Linerless closure for carbonated beverage container |
US5836464A (en) * | 1988-06-17 | 1998-11-17 | Closures And Packaging Services Limited | Closure for beverage container |
US6082569A (en) * | 1988-06-17 | 2000-07-04 | Closures And Packaging Services Limited | Linerless closure for carbonated beverage container |
US5423444A (en) * | 1988-06-17 | 1995-06-13 | Mk Plastics Pty Ltd. | Linerless closure for carbonated beverage container |
US7431877B2 (en) | 1988-06-17 | 2008-10-07 | Closures And Packaging Services Limited | Linerless closure for carbonated beverage container |
US6805252B2 (en) | 1988-06-17 | 2004-10-19 | Closures And Packaging Services Limited | Container and linerless closure combination |
US5439126A (en) * | 1992-07-21 | 1995-08-08 | Carnaudmetalbox Plc | One-piece plastics |
GB2311283A (en) * | 1996-03-19 | 1997-09-24 | Lawson Mardon | Cap for a container |
US20030116523A1 (en) * | 1997-07-14 | 2003-06-26 | Closures And Packaging Services Limited | Closure with extended seal member |
US6991123B2 (en) | 1997-07-14 | 2006-01-31 | Closures And Packaging Services Limited | Closure with extended seal member |
US6527132B1 (en) | 1997-07-14 | 2003-03-04 | Closures And Packaging Services Limited | Closure with extended seal member |
US7055708B1 (en) * | 2003-10-09 | 2006-06-06 | Owens-Illinois Prescription Products Inc. | Child-resistant package |
US20120273452A1 (en) * | 2010-01-06 | 2012-11-01 | Soehnlen Daniel P | Combined lip and shoulder seal for threaded cap |
US20220234789A1 (en) * | 2019-06-07 | 2022-07-28 | Creanova Universal Closures Limited | Closure |
US12017821B2 (en) * | 2019-06-07 | 2024-06-25 | Creanova Universal Closures Limited | Closure |
Also Published As
Publication number | Publication date |
---|---|
ES226932Y (es) | 1977-12-01 |
ES226932U (es) | 1977-08-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3802590A (en) | Linerless container closure | |
US3286866A (en) | Plastic cap | |
US5297688A (en) | Closure for sealing a container rim | |
US4667839A (en) | Snap on tamper indicating closure for containers | |
US4230230A (en) | Plastic overcap for bottle package | |
US3814274A (en) | Linerless closure for a container | |
US4560077A (en) | Plastic closure cap | |
US4392579A (en) | Closure with domed portion | |
US2848145A (en) | Pouring adapter | |
US5259522A (en) | Linerless closure | |
US4566603A (en) | Linerless closure | |
US4360114A (en) | Linerless bottle cap | |
US4006837A (en) | Container closure | |
US4061240A (en) | Closure cap and container | |
US6382445B1 (en) | Linerless closure with pressure seal holding feature | |
US5664693A (en) | Child resistant package | |
JPH0329756A (ja) | ボトルのネックを閉鎖するキャップ | |
JP2000502308A (ja) | ラグを備えたプラスチック製の蓋 | |
US2543775A (en) | Container closure | |
US5727703A (en) | Child resistant package utilizing one piece closure | |
US3715063A (en) | Cap structure holding an inner closure | |
US4429802A (en) | Linerless closure cap | |
US4905852A (en) | Plastic closure with improved seal | |
US4884707A (en) | Water bottle cap | |
US3920142A (en) | Easily operable closure cap |