EP1652777A1 - Bouteille plastique avec goulot adapté pour un bouchon-couronne, s'ouvrant par effet de levier - Google Patents
Bouteille plastique avec goulot adapté pour un bouchon-couronne, s'ouvrant par effet de levier Download PDFInfo
- Publication number
- EP1652777A1 EP1652777A1 EP05090246A EP05090246A EP1652777A1 EP 1652777 A1 EP1652777 A1 EP 1652777A1 EP 05090246 A EP05090246 A EP 05090246A EP 05090246 A EP05090246 A EP 05090246A EP 1652777 A1 EP1652777 A1 EP 1652777A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radius
- bottle
- finish
- vertical axis
- plastic bottle
- 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- Withdrawn
Links
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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/023—Neck construction
- B65D1/0246—Closure retaining means, e.g. beads, screw-threads
Definitions
- the present invention relates generally to molded plastic containers, and particularly to injection-blow molded bottles for containing carbonated beverages.
- Threaded closures provide a simple means for resealing an opened bottle, which is particularly desirable for bottles containing volumes of one liter or more. Threaded closures on single serving size bottles are rarely used to reseal the contents. Threaded closures require the use of different capping equipment than do the crown closures. In commercial settings such as bars and restaurants, threaded closures are viewed as undesirable on single serving containers. Thus, there is some motivation to incorporate a finish suitable to receive a crimp-on, pry-off crown closure onto plastic bottles.
- a plastic bottle of the present invention has a finish at the bottle mouth that is generally symmetric about a vertical axis of the bottle, which is suitable to receive a metal crown cap.
- the finish has a top surface that includes a planar ring lying in a plane normal to the vertical axis.
- a downwardly curved portion extends outward from the planar ring.
- the downwardly curved outer portion terminates at an outermost edge located at a radius R 1 from the vertical axis of the bottle.
- the finish also has an undercutting surface beginning adjacent to the outer edge and extending axially inwardly and downwardly from the outer edge.
- the undercutting surface can be considered as a concave partial toroidal surface.
- the concave partial toroidal surface can be defined in substantial part by a locus of points generated by a radius R having its origin on a circle of radius R 2 lying in a plane normal to the vertical axis, particularly where R ⁇ R 2 ⁇ R 1 .
- the concave partial toroidal surface interacts with a conventionally applied metal crown cap in such a way as to retain the cap under pressures that would cause cap leaking or expulsion with conventional crown finishes.
- the radius R defining the concave partial toroidal surface must be less than about 15% of the radius R 1 , and is generally less than 10% of the radius R 1 .
- the length of radius R can even be less than about 7% of radius R 1 , and may be only about 4% of radius R 1 .
- the planar ring on the top surface of the finish can have a width that is greater than about 2% of radius R 1 .
- the top surface can include a downwardly curved inner edge.
- the downwardly curved inner edge can be defined by a radius having a length that is about equal to the width of the planar ring.
- the downwardly curved inner edge generally terminates in a substantially cylindrical inner surface of the bottle mouth defined by a radius R 3 .
- the distance between the cylindrical inner surface of the bottle mouth and the undercutting surface can be less than 25% R 1 , yet still retain sufficient strength to permit the necessary pry-off function of a conventional metal crown cap using a conventional bottle opener.
- Figure 1 is a perspective view of a bottle of the present invention including a crown closure.
- Figure 2 is a side elevation view of the neck and finish portion of the bottle shown in Figure 1 including the crown closure in greater detail.
- Figure 3 is a sectional view of the finish portion of the bottle shown in Figure 1 with the crown closure removed.
- Figure 4 is a sectional detail view of the upper portion of the finish showing the details of radii defining the surfaces of an example finish of the present invention.
- a bottle 10 of the present invention is shown in Figure 1 to include a base 12 that supports the bottle on any underlying surface.
- a side wall 14 extends upward from the base 12.
- the side wall 14 typically includes a label panel 16 adapted to receive a label, not shown, disclosing the contents of the bottle 10.
- a shoulder 18 is located at the upper margin of the label panel 16 the leads into a neck 20.
- the side wall 14, label panel 16, shoulder 18 and neck 20 are generally rotationally symmetric about a vertical axis Y projecting upward from base 12.
- a finish 22 is located at the upper end of the neck 20 as shown in Figures 1 and 2.
- the finish 22 is also generally symmetric about the vertical axis Y and includes a support ring 24 extending outward from the neck 20 to support the bottle 10, and the preform from which the bottle is manufactured, not shown, during the manufacturing process, which is typically a conventional one- or two-stage injection blow molding process.
- a channel 26 separates the support ring 24 from a bell portion 28, which has a bulbous lower portion 30 tapering inward as the bell portion 28 leads upward toward a cap 32 that seals the bottle mouth.
- the cap 32 is a conventional crown closure typically manufactured of 0.235 mm single reduced, tin free steel.
- the cap 32 includes a central panel 34 surrounded by a depending skirt 36.
- the skirt 36 is typically about 6mm in height and has an exposed lower edge 38 that is formed during the capping process to include a series of alternating ribs 40 interspaced by flutes 42 extending around the entire lower edge 38.
- a soft polymeric sealing material is typically located on an inner surface of the central panel 34 for sealing against a top surface of the bottle 10, discussed below.
- the sealing material can be, for example, made of PVC or other suitable flavor neutral polymer.
- the sealing material which is located on the inner surface of the central panel 34, is maintained in contact with the top 44 surface of the bottle 10 by means of strength of the inward projecting flutes 42 in cooperation with the structure of the finish 22 described below.
- the top surface 44 of the finish 22 is shown in Figures 3 and 4 to include a planar ring 46 lying in a plane normal to the bottle vertical axis Y.
- a downwardly curved portion 48 extends outward from the planar ring 46 to an outermost edge 50 located at a radius R 1 from the bottle vertical axis Y.
- An undercutting surface 52 begins adjacent to the outer edge 50 and extends radially inward and axially downward from the outer edge 50.
- the undercutting surface 52 is a concave partial toroidal surface defined in substantial part by a locus of points generated by a radius R having its origin on a circle 54 of radius R 2 lying in a plane normal to the bottle vertical axis Y, where R 2 is less than R 1 .
- the radius R generating the undercutting surface 52 is very small as compared to either radius R 1 or R 2 .
- the length of radius R must be less than about 15% of the radius R 1' and is generally less than 10% of the radius R 1 .
- the length of radius R can even be less than about 7% of radius R 1' and may be only about 4% of radius R 1 .
- the radius R 2 of the circle 54 is smaller than the outer radius R 1' but can be nearly as big as radius R 1 .
- the radius R 2 can be as large as 97% of radius R 1 .
- a lower edge of the concave partial toroidal undercutting surface 52 blends smoothly and generally tangentially into the bell portion 28, which can be variously dimensioned both in height and angle.
- a downwardly curved inner edge 56 can be situated on the inside of the planar ring 46.
- the downwardly curved inner edge 56 extends between the planar ring 46 and a cylindrical inner surface 58 of the bottle mouth 60 defined by a radius R 3 .
- the radius R 3 can be about 70% to 80% of radius R 1 .
- the distance between the cylindrical inner surface 58 of the bottle mouth 60 and the undercutting surface 52 at the point of closest approach can be less than 25% R 1' but is generally greater than about 15% R 1 .
- the distance between the inner edge 56 and the downwardly curved outer portion 48 defines the width W of the planar ring 46 as shown in Figure 4.
- the width of the planar ring 46 is preferably greater than about 2% of radius R 1 .
- the downwardly curved outer portion 48 can include a plurality of blended radii R 4i , R 4ii , ... , that generally increase in size as the curved outer portion 48 proceeds from the planar ring 46 to the outermost edge 50.
- the size of the radii R 4i , R 4ii can vary between about 5% and 15% of radius R 1 .
- a lower outside surface 62 of radius R 5 can connect the outermost edge 50 to the undercutting surface 52.
- the radius R 5 is preferably less than about 2% of radius R 1 .
- the flutes 42 of the cap 32 engage the undercutting surface 52 to retain the cap 32 in sealing engagement with the bottle mouth 60 satisfactorily even in the presence of significant internal pressure generated by the carbonation in the contained beverage. Further, the strength provided by the material in the finish 22 permits the cap 32 to be easily removed using a conventional bottle opener.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/974,080 US20060086687A1 (en) | 2004-10-27 | 2004-10-27 | Plastic container having crimp-on, pry-off crown finish |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1652777A1 true EP1652777A1 (fr) | 2006-05-03 |
Family
ID=35539697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05090246A Withdrawn EP1652777A1 (fr) | 2004-10-27 | 2005-08-25 | Bouteille plastique avec goulot adapté pour un bouchon-couronne, s'ouvrant par effet de levier |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060086687A1 (fr) |
EP (1) | EP1652777A1 (fr) |
CA (1) | CA2517870A1 (fr) |
MX (1) | MXPA05011480A (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3246784A (en) * | 1964-05-14 | 1966-04-19 | Crown Cork & Seal Co | Container and closure therefor |
US3273737A (en) * | 1966-09-20 | Container and closure | ||
WO1998029314A1 (fr) * | 1996-12-30 | 1998-07-09 | Carlsberg A/S | Bouteille polymere fermee par un bouchon de type couronne ou analogue |
US20040026352A1 (en) * | 2002-07-22 | 2004-02-12 | Hidalgo Dennis K. | Container having damage-resistant finish ring |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US856400A (en) * | 1906-03-09 | 1907-06-11 | King C Gillette | Bottle-seal. |
US2726001A (en) * | 1950-12-22 | 1955-12-06 | Augustine J Cululi | Container closures |
US3147875A (en) * | 1962-04-23 | 1964-09-08 | Sr Richard E Rutledge | Crown cap |
US4592092A (en) * | 1982-01-20 | 1986-05-27 | American Hospital Supply Corporation | Medical solution container and port construction therefor |
US4674644A (en) * | 1983-11-02 | 1987-06-23 | Jacobs Stanley A | Container and lid |
US5242069A (en) * | 1987-02-12 | 1993-09-07 | Michael Hertrampf | Closure cap for a bottle of like containers |
US5038952A (en) * | 1989-12-14 | 1991-08-13 | Coors Brewing Company | Closure assembly for pressurized plastic beverage container |
US5383565A (en) * | 1990-08-08 | 1995-01-24 | Portola Packaging, Inc. | Neck finish for containers of rigid material |
CN1067647C (zh) * | 1995-03-06 | 2001-06-27 | 产品投资公司 | 受破坏明显显示的密封装置 |
EP1238917A1 (fr) * | 2001-03-06 | 2002-09-11 | Crown Cork & Seal Technologies Corporation | Capuchon-couronne à bord inférieur ourlé |
ITBO20010665A1 (it) * | 2001-10-31 | 2003-05-01 | Pelliconi Abbruzzo S R L | Elemento di chiusura per contenitori |
US20030102278A1 (en) * | 2001-12-04 | 2003-06-05 | Thomas Chupak | Aluminum receptacle with threaded outsert |
-
2004
- 2004-10-27 US US10/974,080 patent/US20060086687A1/en not_active Abandoned
-
2005
- 2005-08-25 EP EP05090246A patent/EP1652777A1/fr not_active Withdrawn
- 2005-09-01 CA CA002517870A patent/CA2517870A1/fr not_active Abandoned
- 2005-10-25 MX MXPA05011480A patent/MXPA05011480A/es not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3273737A (en) * | 1966-09-20 | Container and closure | ||
US3246784A (en) * | 1964-05-14 | 1966-04-19 | Crown Cork & Seal Co | Container and closure therefor |
WO1998029314A1 (fr) * | 1996-12-30 | 1998-07-09 | Carlsberg A/S | Bouteille polymere fermee par un bouchon de type couronne ou analogue |
US20040026352A1 (en) * | 2002-07-22 | 2004-02-12 | Hidalgo Dennis K. | Container having damage-resistant finish ring |
Also Published As
Publication number | Publication date |
---|---|
MXPA05011480A (es) | 2006-05-02 |
CA2517870A1 (fr) | 2006-04-27 |
US20060086687A1 (en) | 2006-04-27 |
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