EP0138812B1 - Bottles - Google Patents

Bottles Download PDF

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Publication number
EP0138812B1
EP0138812B1 EP83902895A EP83902895A EP0138812B1 EP 0138812 B1 EP0138812 B1 EP 0138812B1 EP 83902895 A EP83902895 A EP 83902895A EP 83902895 A EP83902895 A EP 83902895A EP 0138812 B1 EP0138812 B1 EP 0138812B1
Authority
EP
European Patent Office
Prior art keywords
bottle
neck
reduced thickness
bottle according
thickness portion
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
Application number
EP83902895A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0138812A1 (en
Inventor
Kenneth George Mabb
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.)
Sodastream Ltd
Original Assignee
Sodastream Ltd
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
Application filed by Sodastream Ltd filed Critical Sodastream Ltd
Priority to AT83902895T priority Critical patent/ATE25365T1/de
Publication of EP0138812A1 publication Critical patent/EP0138812A1/en
Application granted granted Critical
Publication of EP0138812B1 publication Critical patent/EP0138812B1/en
Expired 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
    • B65D51/1638—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element by means of an element bursting upon a predetermined pressure in the container being exceeded
    • 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
    • B65D1/10—Jars, e.g. for preserving foodstuffs
    • 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
    • B65D23/00—Details of bottles or jars not otherwise provided for

Definitions

  • This invention relates to bottles, and in particular to bottles for use in liquid carbonating machines to prepare carbonated beverages.
  • plastics materials are quite unsuitable, there are available plastics materials having such properties that they could be used for bottles to be used in a carbonating machine. Examples of such materials include polyethyleneterphthalate (PET), which is widely used for bottles for carbonated beverages, certain grades of nylon, polycarbonate and PVDC. Other materials are also possible and will occur to readers skilled in the art.
  • PET polyethyleneterphthalate
  • nylon nylon
  • PVDC polycarbonate
  • the present invention aims at a solution to the above problem and provides a bottle to be used in a carbonating machine to carbonate liquid contained in the bottle to a given level, the bottle being of unitary plastics construction and including a neck comprising an integral portion of reduced thickness located above said given level and confined to an area extending around a minor part of the neck circumference, said reduced thickness portion defining a predetermined weakness at which the bottle is adapted to burst upon over-pressurisation to release the pressure in a controlled manner without destroying the bottle integrity.
  • the reduced thickness portion is formed during moulding of the bottle neck.
  • the thickness of the weakened portion is conveniently predetermined so that it will fracture by splitting at a desired pressure avoiding any danger of shattering.
  • the configuration of the reduced thickness portion is variable and as described in more detail below can, for example, take the form of a flat surface portion on the outside of the body, a disc of thinner material, or a groove in the external surface.
  • a method often adopted in the manufacture of plastics bottles consists of producing by injection moulding a preform including a neck part and a body and subsequently blowing out the body into the final shape. During the step of blowing out the body the material is stretched substantially and its thickness is reduced. The shape and form of the bottle neck are unchanged by the blowing process and as a result the material at the neck of the finished bottle is relatively brittle despite being much thicker than the body
  • Figures 1 to 3 show the neck portion of a PET bottle manufactured by the above method.
  • the neck is formed with its final shape during production of the preform by injection moulding.
  • the neck includes a screw thread 1 and an integral ring 2 but these features are not essential to the invention.
  • the neck includes also a weakened portion 3 of reduced thickness provided by a flat on the outside of the neck below the ring 2.
  • the minimum thickness of the neck material at the portion 3 may be in the order of 0.1 to 0.25 mm.
  • the bottle illustrated in Figures 4 to 6 is essentially the same as that of Figures 1 to 3 except that in this case the weakened portion takes the form of a circular disc or membrane 4 approximately 8 mm in diameter and of a uniform thickness which is selected in accordance with the required burst pressure.
  • the disc 4 is formed by a cylindrical recess 5 moulded into the neck and ensures a controlled burst at a pressure which is safely below that at which the body could split or the neck shatter.
  • a carbonating machine bottle which would burst at 300 p.s.i. (2.07 MPa) should have a membrane which would burst at a pressure of between 200 and 240 p.s.i. (1.38 and 1.66 MPa) and it has been found that a membrane thickness of the order of 0.1 to 0.15 mm is appropriate in the case of PET.
  • the bottle shown in Figures 7 and 8 differs from the earlier embodiments in that the weakened portion comprises a groove 6 in the external surface of the bottle neck.
  • the groove is V-shaped in cross-section and extends around a substantially closed path of square rectangular configuration.
  • the groove is formed in the bottle neck during injection moulding of this bottle part.
  • the thickness of the PET material at the bottom of the groove should be about 0.05 to 0.15 mm. Tests with this form of bottle embodying the invention have shown that the weakened portion will initially burst at one of the corners between adjacent portions of the groove 6.
  • bottles made of PET Although specifically described in relation to bottles made of PET the invention is also applicable to bottles made of other plastics materials, including laminates. It is believed that the different forms of weakened neck portion described above will be practical for other materials although dimensions may need to be adjusted to achieve the desired bursting pressure.
  • a carbonating bottle made in accordance with the invention obviates the need for a strong protective shield in a carbonating machine by eliminating the risk of flying material in the event of the bottle bursting. If a burst does occur the pressure is released gradually in a controlled fashion rather than suddenly in an explosion.
  • the reduced thickness portion will be arranged to rupture at a pressure greater than the normal operating pressure of the machine, preferably by about 20-60 p.s.i. (0.14-0.41 MPa).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Ceramic Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Crushing And Pulverization Processes (AREA)
EP83902895A 1982-09-17 1983-09-09 Bottles Expired EP0138812B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83902895T ATE25365T1 (de) 1982-09-17 1983-09-09 Flaschen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8226612 1982-09-17
GB8226612 1982-09-17

Publications (2)

Publication Number Publication Date
EP0138812A1 EP0138812A1 (en) 1985-05-02
EP0138812B1 true EP0138812B1 (en) 1987-02-04

Family

ID=10533002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83902895A Expired EP0138812B1 (en) 1982-09-17 1983-09-09 Bottles

Country Status (21)

Country Link
EP (1) EP0138812B1 (fi)
JP (1) JPS59501544A (fi)
KR (1) KR840005992A (fi)
AR (1) AR231952A1 (fi)
AU (1) AU556871B2 (fi)
CA (1) CA1211057A (fi)
DE (1) DE3369671D1 (fi)
DK (1) DK151550C (fi)
ES (1) ES283040Y (fi)
FI (1) FI69028C (fi)
GR (1) GR81282B (fi)
IL (1) IL69673A (fi)
IT (1) IT1169826B (fi)
NO (1) NO841967L (fi)
NZ (1) NZ205443A (fi)
OA (1) OA07531A (fi)
PT (1) PT77352B (fi)
TR (1) TR21665A (fi)
WO (1) WO1984001142A1 (fi)
ZA (1) ZA836464B (fi)
ZW (1) ZW19183A1 (fi)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD679933S1 (en) 2011-11-22 2013-04-16 Primo Products, LLC Beverage maker
ITVR20130038A1 (it) * 2013-02-13 2014-08-14 Moshe Nash Abramov Bottiglia particolarmente per apparecchiature domestiche per la produzione di bevande gasate
GB2524843B (en) * 2014-04-04 2018-12-19 Pet Eng & Services S R L Pressurised container with pressure relief valve

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799435A (en) * 1954-06-09 1957-07-16 John J Baessler Molded nylon container

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1161745A (en) * 1966-11-01 1969-08-20 Cornelis Brink Improvements in Containers Moulded from a Plastics Material
GB1453363A (en) * 1974-04-24 1976-10-20 Sodastream Ltd Apparatus for aerating liquids
DE3047185A1 (de) * 1980-12-15 1982-07-01 Kernforschungsanlage Jülich GmbH, 5170 Jülich Pressspritzflasche

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799435A (en) * 1954-06-09 1957-07-16 John J Baessler Molded nylon container

Also Published As

Publication number Publication date
DK225684A (da) 1984-05-07
FI844042L (fi) 1984-10-15
IL69673A (en) 1986-08-31
NO841967L (no) 1984-05-16
DK225684D0 (da) 1984-05-07
IT1169826B (it) 1987-06-03
EP0138812A1 (en) 1985-05-02
PT77352B (en) 1986-03-11
AU556871B2 (en) 1986-11-20
ZW19183A1 (en) 1983-11-23
GR81282B (fi) 1984-12-11
PT77352A (en) 1983-10-01
WO1984001142A1 (en) 1984-03-29
OA07531A (en) 1985-03-31
IL69673A0 (en) 1983-12-30
NZ205443A (en) 1987-03-31
DK151550C (da) 1988-05-24
FI69028B (fi) 1985-08-30
JPS59501544A (ja) 1984-08-30
AR231952A1 (es) 1985-04-30
TR21665A (tr) 1985-01-21
ES283040U (es) 1985-05-01
DK151550B (da) 1987-12-14
IT8322893A0 (it) 1983-09-15
FI844042A0 (fi) 1984-10-15
FI69028C (fi) 1985-12-10
AU1949783A (en) 1984-04-04
DE3369671D1 (en) 1987-03-12
ZA836464B (en) 1984-11-28
CA1211057A (en) 1986-09-09
KR840005992A (ko) 1984-11-21
ES283040Y (es) 1985-12-16

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