EP0654411A2 - Flacon ou bouteille - Google Patents

Flacon ou bouteille Download PDF

Info

Publication number
EP0654411A2
EP0654411A2 EP94307594A EP94307594A EP0654411A2 EP 0654411 A2 EP0654411 A2 EP 0654411A2 EP 94307594 A EP94307594 A EP 94307594A EP 94307594 A EP94307594 A EP 94307594A EP 0654411 A2 EP0654411 A2 EP 0654411A2
Authority
EP
European Patent Office
Prior art keywords
vial
head
bottle
screw thread
shoulder
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Withdrawn
Application number
EP94307594A
Other languages
German (de)
English (en)
Other versions
EP0654411A3 (fr
Inventor
Richard Katz
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.)
Chromacol Ltd
Original Assignee
Chromacol 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 Chromacol Ltd filed Critical Chromacol Ltd
Publication of EP0654411A2 publication Critical patent/EP0654411A2/fr
Publication of EP0654411A3 publication Critical patent/EP0654411A3/fr
Withdrawn legal-status Critical Current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
    • B65D1/023—Neck construction
    • B65D1/0246—Closure retaining means, e.g. beads, screw-threads

Definitions

  • the invention relates to glass or plastic vials or bottles and has particular application to vials such as may be used in chromatography.
  • Chromatography vials are generally closed by a plastic screw cap or by an aluminium crimped cap and are constructed to be closed by one or other of such caps.
  • a single-start screw thread is provided on the neck of the vial and in the second case the neck of the vial is provided with an enlarged head portion to which a crimp cap can be fitted by means of a special crimping tool.
  • Both types of cap may employ a seal made of e.g. rubber, silicone, or PTFE and may have an aperture for the passage of a sampling needle through the seal.
  • the present invention sets out to provide a vial which can receive either a screw cap or a crimp cap. This is achieved by providing a screw thread on the head of a crimp-top vial.
  • the present invention provides a glass or plastic vial or bottle having an upper part formed with an upper cylindrical head immediately above a lower cylindrical reduced neck and adapted to be closed by a crimp cap fitted to the head, wherein the head is formed with an external screw thread so that the vial or bottle can be alternatively closed by a screw cap.
  • the upper cylindrical head comprises a plinth having a first diameter and on the outside of which the screw thread is formed and wherein the lower reduced neck is formed immediately adjacent the plinth and has a second diameter less than the first diameter; whereby a shoulder is formed at the junction between the head and the reduced neck and the thread or threads of the screw thread terminate at the shoulder and form part thereof.
  • the screw thread is a multi-start thread.
  • the ends of the threads terminating at the shoulder are equally spaced around the circumference of the neck to provide a relatively regular, albeit partly interrupted, shoulder perpendicular to the axis of the vial.
  • the effect is to cause the thread to form a part of the shoulder only at one position around the circumference of the vial, thus making the shoulder somewhat uneven.
  • a successful seal is not so readily achieved by a crimp cap.
  • This effect can be mitigated by making the thread very fine but for a glass or plastic vial, this is difficult.
  • a single start thread may be damaged by crimping a cap onto it.
  • the valleys of the screw threads are completely open at their lower ends.
  • the gaps which the valleys of the threads form in the shoulder also make removal of crimped caps by a de-crimping tool easier since they make it easier for the caps to be deformed by the tool.
  • Figure 1 shows a known type of glass vial having a body 1 and a neck 2.
  • a single start screw thread is formed on the neck such that the vial can be closed by a screw cap, typically made of polypropylene.
  • Figure 2 shows a further known type of vial having a head 3 formed immediately above a neck 2 such that a crimp cap, typically made of aluminium or other suitably malleable metal, can be fitted thereto.
  • a crimp cap typically made of aluminium or other suitably malleable metal
  • the vial of Figure 3 also has a body 1, a neck 2 and a head 3.
  • the head consists of a plinth portion 4 having an external diameter D1 and provided on the outside with a multi-start screw thread 5, the peaks of which extend to a diameter D3 which naturally is greater than the diameter D1.
  • the diameter D3 is actually equivalent to the diameter of the head 3 of the prior art vial shown in Figure 2.
  • the neck 2 is formed immediately below the head 3 and has a diameter D2 which is less than diameter D1.
  • a shoulder 6 is formed at the junction between the head 3 and the neck 2. Typically, the shoulder is inclined to the horizontal by an angle of up to 15° as shown but the shoulder may alternatively be horizontal or inclined at an even greater angle of, say 30°.
  • This inclination of the shoulder assists in the fitting of a crimp cap.
  • the threads 7 of the multi-start screw thread terminate at the shoulder and form a part thereof.
  • the valleys 8 of the screw thread are completely open at their lower ends so that no obstruction to the downward movement of a screw cap will be created.
  • the radially inner part of the shoulder 6 is provided by the plinth and the radially outer part by the ends of the screw threads 7.
  • the shoulder will not extend fully to the diameter D3 over its whole circumference but will be partly interrupted by the valleys of the screw thread. Nevertheless the shoulder will provide a satisfactory surface for the crimping of a crimp cap.
  • the screw thread has three starts and has an axial extent such that each thread has a circumferential extent of about 180°;
  • the preferred range being 150 - 220° and the more preferred range being 170 - 200°.
  • the extent of the screw thread is sufficient for satisfactory fitting of a screw cap. Since the vial is also to be closed by a crimp cap of a diameter similar to D3 - advantageously one of a standard size - the axial length of the plinth 4 should not be too long. In the embodiment shown, the axial length of the plinth 4 is about the same as that of the neck 2. This is facilitated by the use of a multi-start thread.
  • the top surface of the head is inclined to the horizontal to improve the seal between cap and neck.
  • a screw cap having an appropriate internal screw thread can be fitted to the vial of Figure 3 to close it.
  • a crimp cap of appropriate diameter can also be fitted to the vial in known manner being crimped over the shoulder 6.
  • the length of the reduced neck 2 must be sufficient to permit the crimping of a crimp cap.
  • the overall height of the neck and head is substantially the same as in prior art vials of corresponding size so that the vials can be interchangeably used.
  • the invention has been described in relation to fairly small vials such as may be used in autosamplers, the invention has application to vials or bottles of any size where the option of closing the vial or bottle either with a screw cap or a crimp cap may be desirable.
  • a glass vial or bottle in accordance with the invention is made by forming a pre-form from tubular stock having a cylindrical side wall, a bottom end wall and an open top; heating the upper part of the pre-form with a flame while the pre-form is rotated about its longitudinal axis; forging the upper part of the pre-form whilst hot to form an upper cylindrical head immediately above or lower cylindrical reduced neck; and rolling an external screw thread onto the head whilst hot.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
EP94307594A 1993-11-19 1994-10-17 Flacon ou bouteille. Withdrawn EP0654411A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9323833 1993-11-19
GB939323833A GB9323833D0 (en) 1993-11-19 1993-11-19 Containers

Publications (2)

Publication Number Publication Date
EP0654411A2 true EP0654411A2 (fr) 1995-05-24
EP0654411A3 EP0654411A3 (fr) 1995-10-18

Family

ID=10745400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94307594A Withdrawn EP0654411A3 (fr) 1993-11-19 1994-10-17 Flacon ou bouteille.

Country Status (3)

Country Link
EP (1) EP0654411A3 (fr)
DE (1) DE654411T1 (fr)
GB (2) GB9323833D0 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6580304B2 (ja) * 2014-03-24 2019-09-25 大日本印刷株式会社 プラスチックボトルおよびプリフォーム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335891A (en) * 1966-02-10 1967-08-15 Nat Distillers Chem Corp Bottle and closure therefor
AU6148173A (en) * 1972-10-27 1975-04-17 Johns-Manville Corporation Plastic pipe thrust resistant joint
US4397629A (en) * 1979-11-23 1983-08-09 Yoshino Kogyosho Co. Ltd. Apparatus for drawing mouth-neck portions of synthetic resin bottles
GB2189776A (en) * 1986-04-30 1987-11-04 Grace W R & Co Threaded container and closure therefor
EP0431915B1 (fr) * 1989-12-05 1994-06-08 United Glass Limited Récipient
GB9012041D0 (en) * 1990-05-30 1990-07-18 Beeson & Sons Ltd Improvements in or relating to containers
WO1992000889A1 (fr) * 1990-07-13 1992-01-23 J.G. Finneran Associates Couvercle a encliqueter hermetique

Also Published As

Publication number Publication date
EP0654411A3 (fr) 1995-10-18
GB9323833D0 (en) 1994-01-05
GB9420904D0 (en) 1994-11-30
DE654411T1 (de) 1996-09-12
GB2283968A (en) 1995-05-24

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