EP0572722B1 - Verformungsbeständiger Behälter - Google Patents

Verformungsbeständiger Behälter Download PDF

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Publication number
EP0572722B1
EP0572722B1 EP92201566A EP92201566A EP0572722B1 EP 0572722 B1 EP0572722 B1 EP 0572722B1 EP 92201566 A EP92201566 A EP 92201566A EP 92201566 A EP92201566 A EP 92201566A EP 0572722 B1 EP0572722 B1 EP 0572722B1
Authority
EP
European Patent Office
Prior art keywords
container
base
curve
radius
section
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
Application number
EP92201566A
Other languages
English (en)
French (fr)
Other versions
EP0572722A1 (de
Inventor
Petros Kalkanis, (Nmn)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE69217358T priority Critical patent/DE69217358T2/de
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Priority to DK92201566.4T priority patent/DK0572722T3/da
Priority to EP92201566A priority patent/EP0572722B1/de
Priority to ES92201566T priority patent/ES2097268T3/es
Priority to AT92201566T priority patent/ATE148668T1/de
Priority to CA002137146A priority patent/CA2137146C/en
Priority to US08/343,596 priority patent/US5492245A/en
Priority to PCT/US1993/004580 priority patent/WO1993024377A1/en
Priority to JP6500580A priority patent/JP2980684B2/ja
Priority to BR9306481A priority patent/BR9306481A/pt
Priority to TR00416/93A priority patent/TR27426A/xx
Priority to MA23198A priority patent/MA22899A1/fr
Priority to IE041693A priority patent/IE930416A1/en
Publication of EP0572722A1 publication Critical patent/EP0572722A1/de
Application granted granted Critical
Publication of EP0572722B1 publication Critical patent/EP0572722B1/de
Priority to GR970400199T priority patent/GR3022504T3/el
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D1/00—Rigid or semi-rigid 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 or 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
    • B65D1/0261—Bottom construction
    • B65D1/0276—Bottom construction having a continuous contact surface, e.g. Champagne-type bottom

Definitions

  • the present invention relates to a container of thermoplastic material for containing liquids.
  • the container is designed so as to resist bulging.
  • thermoplastic materials to manufacture containers for liquids.
  • Some of the liquids to be contained by such containers for instance bleach-containing compositions, create internal pressure which builds up with time.
  • the containers are progressively subjected to deformation due to the internal pressure build-up, especially at their base.
  • This phenomenon is often referred to as "bulging”. This phenomenon is especially acute in warm countries where the containers may be exposed to particularly elevated temperatures. In some instances, bulging can be so severe so as to induce a base deformation which is such that the container can no longer stay in upright position. For instance in supermarkets, the containers may fall of the shelves.
  • Anti-bulging containers have been disclosed in the art, for instance in DE 16 07 895, DE 21 11 534, EP 0 002 082 and our co-pending European Application EP 91202524. These references disclose containers having a central dome, where the dome is connected to the side walls of the container by pieces of thermoplastic material of various shapes.
  • FR-A-2 382 373 describes a base having a central part (13) connected to annular zones (4,5). The shape of this central part is plane, preferably convex. This configuration of the base exhibits an improved impact strength. It is therefore an object of the present invention to provide a container of thermoplastic material for containing liquids with improved resistance to bulging.
  • the present invention is a container (1) of thermoplastic material comprising a side wall (2) and a base (3), said base comprising, in a cross section in a plane comprising the container's vertical axis (A), a concave inwards curved section (4) connected to the side wall (2), at least two successive stairs, each stair consisting of a straight part (5,5') forming an angle ( ⁇ 1, ⁇ 2) with a plane (B) perpendicular to said axis (A), followed by a sharp concave outwards curve (6,6'), and a dome (8) consisting of a smooth concave outwards curve.
  • the base (3) of the container (1) is symmetrical about said axis (A).
  • the container according to the invention is made of a thermoplastic material.
  • a thermoplastic material Such materials have been extensively described in the art and include vinyl chloride based resins, polymers and copolymers derived from olefins, acrylic polymers and copolymers, polyethylene, polypropylene, polystyrene, polyethylene terephthalate, polyethylene terephthalate glycol, or mixtures thereof.
  • the container can be made by single or multi layer extrusion of such materials. It can also be made out of recycled thermoplastic materials.
  • a preferred thermoplastic material for use herein is polyethylene.
  • the cross section of the container according to the present invention, and/or its base, in a plane perpendicular to the container's vertical axis (A), can be square or rectangular, ovoid or circular.
  • the base (3) of the container according to the present invention is symmetrical about said axis (A).
  • said cross section is circular. .
  • the present invention is particularly suitable for containers of rather small size, i.e. where the container's largest dimension in said cross section is less than 10cm.
  • fig 1 represents the lower part of the container in a cross section in a plane comprising the container's central vertical axis (A).
  • Fig 2 represents a scale up of the lower part of the container, on one side of (A).
  • the container (1) comprises a side wall (2) and a base (3).
  • the base (3) which is the gist of the present invention is connected to the side wall (2).
  • the base (3) comprises a curved section (4), followed by at least two stairs (5/6,5'/6') and a dome (8).
  • the curved section (4) is connected at one extremity to the side wall(2), and at the other extremity to at least two successive stairs.
  • the curve of said curved section (4) is concave inwards, i.e. the interior of said curve faces the inside of the container.
  • Each stair comprises a straight part (5,5') followed by a sharp curve (6,6').
  • the straight parts (5,5') can be of same dimensions, but in a preferred embodiment, the straight part which is the closest to the periphery of the container is longer than straight part which is closest to the center of the container.
  • Each straight part (5,5') forms an angle ( ⁇ 1, ⁇ 2) with a plane (B) perpendicular to the container's vertical central axis (A).
  • ⁇ 1 and ⁇ 2 can be different, but in a preferred embodiment of the invention ⁇ 1 and ⁇ 2 are the same.
  • Each straight part (5,5') is connected to a sharp curve (6,6').
  • sharp curve it is meant herein a curve who's radius is smaller than the radius of the curved section (4).
  • Said sharp curves (6,6') are concave outwards, i.e. the interior of each sharp curve (6,6') faces the outside of the container.
  • the radius of the sharp curves (6,6') can be identical, but in a preferred embodiment, the radius of the sharp curve which is closest to the periphery of the container is larger than the radius of the sharp curve which is closest to the center of the container.
  • the base (3) only comprise two stairs.
  • the sharp curve of the stair which is closest to the center of the container is connected to a dome (8).
  • the dome (8) consists of a smooth curve. Said smooth curve is concave outwards, i.e. the interior of said curve faces the outside of the container.
  • smooth curve it is meant herein a curve who's radius is larger than the radius of both curved sections (6,6').
  • the present invention is further illustrated by the following example.
  • a cylindrical container according to the present invention is made out of polyethylene. It has a diameter of 90mm.
  • the radius of the curved section (4) is 5.5mm.
  • the length of the straight part (5) measured along plane (B) is 11.5 mm.
  • the radius of the sharp curve (6) is 3mm.
  • the length of the straight part (5') measured along plane (B) is 4.65mm.
  • the radius of the sharp curve (6') is 2mm.
  • the radius of the dome is 90mm.
  • the thickness of the thermoplastic material used for this embodiment is 1.5mm throughout the container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Packages (AREA)

Claims (7)

  1. Behälter (1) aus thermoplastischem Material mit einer Seitenwand (2) und einer Basis (3), wobei die Basis in einem Querschnitt in einer die Behälter-Vertikalachse (A) enthaltenden Ebene einen konkav nach innen gekrümmten Abschnitt (4) aufweist, der mit der Seitenwand (2) verbunden ist, dadurch gekennzeichnet, daß die Basis ferner mit zumindest zwei aufeinanderfolgenden Stufen versehen ist, wobei jede Stufe einen geraden Teil (5, 5') aufweist, der einen Winkel (α1, α2) mit einer Ebene (B) senkrecht zur Achse (A) einschließt, gefolgt von einer nach außen scharf konkav gekrümmten Kurve (6, 6'), wobei die nach außen scharf konkav gekrümmte Kurve einen Radius hat, der kleiner als der Radius des gekrümmten Abschnittes (4) ist, und einen Dom (8), der aus einer glatten, nach außen konkav gekrümmten Kurve besteht, wobei die Basis (3) um die Achse (A) symmetrisch ist.
  2. Behälter nach Anspruch 1, der in einem Querschnitt in einer Ebene senkrecht zur zentralen Vertikalachse des Behälters eine größere Abmessung von weniger als 10 cm aufweist.
  3. Behälter nach einem der vorhergehenden Ansprüche, der in einer Ebene senkrecht zur zentralen Vertikalachse des Behälters Kreisquerschnitt aufweist.
  4. Behälter nach einem der vorhergehenden Ansprüche, der nur zwei Stufen aufweist.
  5. Behälter nach einem der vorhergehenden Ansprüche, bei welchem α1=α2.
  6. Behälter nach einem der vorhergehenden Ansprüche, bei welchem der gerade Teil (5), welcher dem Umfang des Behälters am nächsten liegt, länger als der gerade Teil (5') ist, welcher der Mitte des Behälters am nächsten liegt.
  7. Behälter nach einem der vorhergehenden Ansprüche, bei welchem der Radius der nach außen scharf konkav gekrümmten Kurve (6), welche dem Umfang des Behälters am nächsten liegt, größer als der Radius der nach außen scharf konkav gekrümmten Kurve (6') ist, welche der Mitte des Behälters am nächsten liegt.
EP92201566A 1992-06-02 1992-06-02 Verformungsbeständiger Behälter Expired - Lifetime EP0572722B1 (de)

Priority Applications (14)

Application Number Priority Date Filing Date Title
DK92201566.4T DK0572722T3 (da) 1992-06-02 1992-06-02 Beholder, som modvirker udbuling
EP92201566A EP0572722B1 (de) 1992-06-02 1992-06-02 Verformungsbeständiger Behälter
ES92201566T ES2097268T3 (es) 1992-06-02 1992-06-02 Recipiente resistente a la deformacion.
AT92201566T ATE148668T1 (de) 1992-06-02 1992-06-02 Verformungsbeständiger behälter
DE69217358T DE69217358T2 (de) 1992-06-02 1992-06-02 Verformungsbeständiger Behälter
JP6500580A JP2980684B2 (ja) 1992-06-02 1993-05-13 膨出防止容器
US08/343,596 US5492245A (en) 1992-06-02 1993-05-13 Anti-bulging container
PCT/US1993/004580 WO1993024377A1 (en) 1992-06-02 1993-05-13 Anti-bulging container
CA002137146A CA2137146C (en) 1992-06-02 1993-05-13 Anti-bulging container
BR9306481A BR9306481A (pt) 1992-06-02 1993-05-13 Recipiente anti-abaulamento
TR00416/93A TR27426A (tr) 1992-06-02 1993-05-24 Bombelesme sergilemeyen konteyner.
MA23198A MA22899A1 (fr) 1992-06-02 1993-05-28 Recipient anti-gonflement.
IE041693A IE930416A1 (en) 1992-06-02 1993-06-01 Anti-bulging container
GR970400199T GR3022504T3 (en) 1992-06-02 1997-02-06 Anti-bulging container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92201566A EP0572722B1 (de) 1992-06-02 1992-06-02 Verformungsbeständiger Behälter

Publications (2)

Publication Number Publication Date
EP0572722A1 EP0572722A1 (de) 1993-12-08
EP0572722B1 true EP0572722B1 (de) 1997-02-05

Family

ID=8210643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92201566A Expired - Lifetime EP0572722B1 (de) 1992-06-02 1992-06-02 Verformungsbeständiger Behälter

Country Status (13)

Country Link
EP (1) EP0572722B1 (de)
JP (1) JP2980684B2 (de)
AT (1) ATE148668T1 (de)
BR (1) BR9306481A (de)
CA (1) CA2137146C (de)
DE (1) DE69217358T2 (de)
DK (1) DK0572722T3 (de)
ES (1) ES2097268T3 (de)
GR (1) GR3022504T3 (de)
IE (1) IE930416A1 (de)
MA (1) MA22899A1 (de)
TR (1) TR27426A (de)
WO (1) WO1993024377A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2717443B1 (fr) * 1994-03-16 1996-04-19 Evian Eaux Min Bouteille moulée en matière plastique.
PT751071E (pt) 1995-06-26 2002-04-29 Procter & Gamble Um contentor para produtos liquidos
US9150320B2 (en) 2011-08-15 2015-10-06 Graham Packaging Company, L.P. Plastic containers having base configurations with up-stand walls having a plurality of rings, and systems, methods, and base molds thereof
FR2998877B1 (fr) * 2012-11-30 2014-12-26 Sidel Participations Recipient ayant un fond muni d'une voute a double decrochement
EP2764967B1 (de) * 2013-02-06 2015-10-14 Sidel Participations Form zum Blasformen eines Heißfüllungsbehälters mit erhöhten Streckungsverhältnissen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3409167A (en) * 1967-03-24 1968-11-05 American Can Co Container with flexible bottom
US4120419A (en) * 1976-02-23 1978-10-17 National Steel Corporation High strength seamless chime can body, sheet metal container for vacuum packs, and manufacture
US4177746A (en) * 1976-07-29 1979-12-11 Reynolds Metals Company Method of forming a container
JPS5325186A (en) * 1976-08-20 1978-03-08 Daiwa Can Co Ltd Metallic can for drink containing carbon dioxide or the like
FR2382373A1 (fr) * 1977-03-02 1978-09-29 Solvay Corps creux en matiere thermoplastique
FR2429157A1 (fr) * 1978-06-21 1980-01-18 Carnaud Total Interplastic Nouveau fond de corps creux en matiere plastique et corps creux comportant un tel fond
US4197954A (en) * 1978-10-05 1980-04-15 Ethyl Development Corporation Container
FR2448480A1 (fr) * 1979-02-07 1980-09-05 Solvay Corps creux en matiere thermoplastique orientee
US4408698A (en) * 1980-11-24 1983-10-11 Ballester Jose F Novel cover and container assembly
US4542029A (en) * 1981-06-19 1985-09-17 American Can Company Hot filled container

Also Published As

Publication number Publication date
WO1993024377A1 (en) 1993-12-09
TR27426A (tr) 1995-04-21
GR3022504T3 (en) 1997-05-31
JP2980684B2 (ja) 1999-11-22
DE69217358D1 (de) 1997-03-20
JPH07507259A (ja) 1995-08-10
BR9306481A (pt) 1998-09-15
DK0572722T3 (da) 1997-04-01
EP0572722A1 (de) 1993-12-08
CA2137146A1 (en) 1993-12-09
ES2097268T3 (es) 1997-04-01
ATE148668T1 (de) 1997-02-15
MA22899A1 (fr) 1993-12-31
IE930416A1 (en) 1993-12-15
DE69217358T2 (de) 1997-06-26
CA2137146C (en) 1998-09-22

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