EP0014507A1 - Hohlkörper aus gerecktem thermoplastischem Material - Google Patents

Hohlkörper aus gerecktem thermoplastischem Material Download PDF

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Publication number
EP0014507A1
EP0014507A1 EP80200081A EP80200081A EP0014507A1 EP 0014507 A1 EP0014507 A1 EP 0014507A1 EP 80200081 A EP80200081 A EP 80200081A EP 80200081 A EP80200081 A EP 80200081A EP 0014507 A1 EP0014507 A1 EP 0014507A1
Authority
EP
European Patent Office
Prior art keywords
hollow body
protrusions
hollow
longitudinal axis
body according
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.)
Granted
Application number
EP80200081A
Other languages
English (en)
French (fr)
Other versions
EP0014507B1 (de
Inventor
Edmond Michel
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.)
Solvay SA
Original Assignee
Solvay SA
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 Solvay SA filed Critical Solvay SA
Priority to AT80200081T priority Critical patent/ATE8232T1/de
Publication of EP0014507A1 publication Critical patent/EP0014507A1/de
Application granted granted Critical
Publication of EP0014507B1 publication Critical patent/EP0014507B1/de
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
    • 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
    • B65D1/0261—Bottom construction
    • B65D1/0276—Bottom construction having a continuous contact surface, e.g. Champagne-type bottom

Definitions

  • the present invention relates to a hollow body of bioriented thermoplastic material having a longitudinal axis of symmetry and comprising a cylindrical neck, a side wall of generally cylindrical shape and a bottom comprising a central part in the shape of a re-entrant dome connected to the side wall by a molding arched device forming a support surface for the hollow body in a vertical position such as a bottle or a similar container
  • thermoplastics are used more and more often for the production of hollow bodies such as bottles used for packaging liquids.
  • they are more and more often blow molded under conditions, particularly of temperature, leading to orientation, and preferably to biorientation in two orthogonal directions, macromolecules of their constituent material.
  • the choice for these hollow bodies of a bottom having a central part in the shape of a re-entrant dome connected to the side wall by a peripheral arcuate molding by which the hollow body is supported in a vertical position is generally determined with a view to improving the stability of the hollow body in vertical position and the resistance of these hollow bodies to impact stresses.
  • the diameter of the central part in the shape of a re-entrant dome varies between 30 and 80 X of the value of the maximum diameter of the bodies hollow in order to guarantee a good resistance to the stresses by choes.
  • hollow bodies of this type have a serious drawback which results from the fact that the diameter of the re-entrant part of their bottom is generally greater than the external diameter of their neck so that the latter can penetrate significantly into the re-entrant part of the split. of a similar hollow body. Therefore, when after filling, these hollow bodies are packed in cardboard boxes which are then stacked for transport or storage, the cardboard walls which are interposed between two superimposed rows of hollow bodies, c 'That is to say, the lower and upper walls of the boxes may be deformed, by compression, between the necks and the bottoms of these hollow bodies and this, in particular, when these walls are wet. This therefore results in a deformation of the packaging boxes which risks compromising the stability of the stacks.
  • the present invention therefore relates to a hollow body of oriented thermoplastic material having a longitudinal axis of symmetry and comprising a cylindrical neck, a side wall of generally cylindrical shape and a bottom comprising a central part in the form of a re-entrant dome connected to the side wall by an arcuate peripheral molding forming a bearing surface for the hollow body in a vertical position in which the central part in the shape of a re-entrant dome is provided with a plurality of protrusions projecting towards the outside of the hollow body distributed around the longitudinal axis and the vertices of which are spaced from this axis by a distance at most equal to 60% of the external diameter of the neck of the hollow body.
  • these protrusions are hollow and are made directly during molding using a suitable mold.
  • the tops of the protuberances are at most spaced from the longitudinal axis of the hollow body by a distance equal to 50% of the external diameter of the neck of the hollow body, this difference being the same for each vertex.
  • the protrusions can have any profile but are preferably free from sharp angles.
  • the protuberances have the appearance of cones with rounded apex and whose longitudinal axes or directing axes are parallel to or directed towards the longitudinal axis of the hollow body. In the latter case, the protrusions approach this axis.
  • the base of these conical profiles is truncated due to the inclination of the re-entrant central part of the bottom of the hollow body. However, it is possible to flatten the reentrant central part of the bottom of the hollow body at the level of the protrusions in order to impart a perfectly conical shape to the protrusions.
  • the cross sections of the protrusions may be circular in shape as is the case when the protrusions have a conical profile or be of different shape. Likewise, these sections can be constant or variable over the entire height of the protrusions. However, it is preferred that the greatest width of these sections is less than 20% of the maximum diameter of the hollow body, the best results being achieved when this width is between 5 and 15% of this diameter.
  • the height of the protrusions is chosen so that the tops of these protrusions are spaced from the wall of the re-entrant central part of the circle in the region where the latter is connected to the arcuate peripheral molding.
  • this height is preferably chosen so that the tops of the protrusions are slightly set back from the bearing surface of the hollow body in a vertical position.
  • this shrinkage is at most equal to 10% of the maximum diameter of the hollow body and is the same for all the protrusions.
  • the number of protrusions can be any. In general, however, it is preferred that it varies between 2 and 6. Very good results have been obtained with bottoms having three protrusions.
  • the angular spacing between the successive protrusions is constant. Therefore, according to the preferred embodiments of the invention, the vertices of the protrusions are located on the same diameter of the hollow body when the bottom has two protrusions and the vertices of the protrusions define the vertices of a regular polygon which can be inscribed in a circle whose center is located on the longitudinal axis of the hollow body when the bottom is equipped with more than two protrusions.
  • the desired result can be achieved when the angular spacing between the successive protrusions is arbitrary and variable.
  • the arcuate peripheral molding by which the hollow body bears can also be produced according to many possibilities.
  • the arcuate peripheral molding has a constant radius of curvature tangentially connecting with the side wall and with the central part of the bottom.
  • the radius of curvature is generally between 10 and 25% of the maximum diameter of the hollow body.
  • the peripheral arcuate molding can have two successive radii of constant curvature.
  • the first radius of curvature corresponds to the part of the molding which connects to the side wall and is greater than the second radius of curvature which corresponds to the molding part which connects to the central part of the bottom.
  • These two successive radii of curvature are preferably chosen in such a way that the peripheral molding has no point of inflection and that it tangentially connects on either side with the side wall and with the central part of the bottom.
  • the value of the first radius of curvature is preferably between 50 and 200% of the maximum diameter of the hollow body and that of the second radius of curvature between 10 and 25% of this same diameter.
  • the peripheral molding may however have other profiles than the two which have just been described.
  • this molding can have a variable radius of curvature.
  • annular zone on this molding which can be used for engraving inscriptions in relief indicating for example the capacity of the hollow body, the trade name of its producer or of its user, a brand or a Warning.
  • the width of such an annular zone is generally between 10 and 40% of the maximum diameter of the hollow body and, preferably, between 15 and 30% of this diameter.
  • the central part in the shape of a domed dome can have any general appearance, it can for example be frustoconical and spherical at its top. However, a spherical cap shape is preferred.
  • the largest diameter of this re-entrant central part is generally between 15 and 60% of the maximum diameter of the hollow body.
  • the hollow body according to the invention has, as has been said, a side wall of cylindrical shape.
  • this wall does not necessarily have to have perfect symmetry of revolution. It is possible that the shape of this wall deviates from the shape of a perfect cylinder.
  • the hollow body can have an elliptical or polygonal section. In this case, it is preferred that the largest dimension of the sections perpendicular to the axis of the hollow body does not exceed twice the smallest.
  • the hollow body according to the invention can be made from any thermoplastic material.
  • thermoplastic materials which can be used, mention may be made of vinyl chloride-based resins, polymers and copolymers produced from alpha-olefins containing up to eight carbon aromas in their molecule, polymers and acrylic copolymers and especially those produced from acrylic nitrile, polyesters such as polyethylene terephthalate, and polycarbonates.
  • the hollow body according to the invention can be produced by any known technique, and in particular by injection blow-molding and blow-molding techniques, leading to the production of molecularly oriented hollow bodies.
  • the hollow bodies according to the invention have remarkable mechanical properties which make them suitable for use even for the packaging under pressure of carbonated drinks such as beer and lemonades.
  • thermoplastic material according to the invention is also illustrated by Figures 1 and 2 of the accompanying drawings which show a hollow body according to one embodiment of the invention.
  • the hollow body 1 comprises a side wall 2 of generally cylindrical shape, a threaded neck or not (not shown) and a bottom consisting of a central part 4 in reentrant dome shape connected to the side wall 2 by an arcuate peripheral molding 3.
  • the arcuate molding 3 has two different radii of curvature R 1 and R 2 , the radius R 1 being significantly larger than the radius R 2 .
  • the central part 4 is provided with three protrusions 6 which are hollow and equidistant and which are formed during the molding of the hollow body 1.
  • These protrusions have the general shape of a cone with a rounded top whose longitudinal axis is parallel to the longitudinal axis CC 'of the hollow body.
  • the top of the protrusions is spaced from the wall of the re-entrant part 4 of the bottom in the region 5 where the latter is connected to the peripheral molding 3.
  • the height of the protrusions is such that the top of these protrusions is spaced from the bearing surface 7 of the hollow body 1 in a vertical position by a distance d at most equal to 10% of the maximum diameter D max. of the hollow body.
  • the vertices of the protrusions define the vertices of an equilateral triangle which is inscribed in a circle whose center is located on the longitudinal axis CC 'of the hollow body 1.
  • thermoplastic material used is rigid polyvinyl chloride.
  • FIGS. 1 to 4 The main dimensions of the hollow body bottoms produced according to FIGS. 1 to 4 are given below. Fig. 1 and 2 Fig. 3 Fig. 4
  • the bottom according to fig. 3 is formed successively from the periphery by a peripheral arcuate molding 8 for connection to the side wall, by a substantially planar annular zone 9 connecting to the peripheral arcuate molding and by a central portion 10 in the form of a re-entrant dome of relatively diameter low.
  • the bottom according to fig. 4 is constituted by three successive alternating moldings of constant radius.
  • the filled bottles are dropped in a vertical position on a concrete base inclined 5 "from the horizontal, the drop height being 0.70 m or 1.10 m. This test allows to judge the resistance of the vials in the event of an accidental fall of a table or shelf.
  • the bottle is attached to the end of a pendulum and strikes a vertical concrete wall with a potential energy of 14,710 Nm.
  • This test makes it possible to judge the resistance of the bottles in the event of accidental knocks such as those occasioned, for example, during the hanging of railway wagons ensuring their transport to the places of distribution.
  • filled and closed bottles according to the invention are grouped by 12 in cardboard boxes usually used for their storage and transport.
  • the boxes are then stacked in four rows. After storage for 60 days, it can be seen that the cardboard boxes show no deformation in their lower and upper faces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
EP80200081A 1979-02-07 1980-01-30 Hohlkörper aus gerecktem thermoplastischem Material Expired EP0014507B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80200081T ATE8232T1 (de) 1979-02-07 1980-01-30 Hohlkoerper aus gerecktem thermoplastischem material.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7903414A FR2448480A1 (fr) 1979-02-07 1979-02-07 Corps creux en matiere thermoplastique orientee
FR7903414 1979-02-07

Publications (2)

Publication Number Publication Date
EP0014507A1 true EP0014507A1 (de) 1980-08-20
EP0014507B1 EP0014507B1 (de) 1984-07-04

Family

ID=9221823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200081A Expired EP0014507B1 (de) 1979-02-07 1980-01-30 Hohlkörper aus gerecktem thermoplastischem Material

Country Status (8)

Country Link
US (1) US4276987A (de)
EP (1) EP0014507B1 (de)
AR (1) AR220259A1 (de)
AT (1) ATE8232T1 (de)
DE (1) DE3068393D1 (de)
ES (1) ES255492Y (de)
FR (1) FR2448480A1 (de)
PT (1) PT70790A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0244128A2 (de) * 1986-04-21 1987-11-04 Fibrenyle Limited Durch Blasformen gefertigte Behälter
EP0534012A1 (de) * 1991-09-27 1993-03-31 The Procter & Gamble Company Behälter aus thermoplastischem Material zur Aufnahme von Flüssigkeiten
EP0557332A1 (de) * 1990-11-15 1993-09-01 Plastipak Packaging Inc Aus kunststoff blasgeformter freistehender behälter.
EP0572722A1 (de) * 1992-06-02 1993-12-08 The Procter & Gamble Company Verformungsbeständiger Behälter
EP0584219A1 (de) * 1991-05-20 1994-03-02 Abbott Lab Sterilisierbarer kunststoffbehälter mit hochfesten seitenwänden.
EP0629555A2 (de) * 1993-06-16 1994-12-21 Constar Plastics Inc. Behälter mit Standfuss groben Durchmessers
WO1999007607A1 (en) * 1997-08-05 1999-02-18 Crown Cork & Seal Technologies Corporation Plastics bottle

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5227366A (en) * 1987-08-07 1993-07-13 The Clorox Company Mitigation of stress-cracking in fragranced bleach-containing bottles
US5080826A (en) * 1987-08-07 1992-01-14 The Clorox Company Stable fragranced bleaching composition
US5005716A (en) * 1988-06-24 1991-04-09 Hoover Universal, Inc. Polyester container for hot fill liquids
US5024340A (en) * 1990-07-23 1991-06-18 Sewell Plastics, Inc. Wide stance footed bottle
US5287978A (en) * 1990-11-15 1994-02-22 Plastipak Packaging, Inc. Plastic blow molded freestanding container
US5615790A (en) * 1990-11-15 1997-04-01 Plastipak Packaging, Inc. Plastic blow molded freestanding container
US5139162A (en) * 1990-11-15 1992-08-18 Plastipak Packaging, Inc. Plastic blow molded freestanding container
US5234126A (en) * 1991-01-04 1993-08-10 Abbott Laboratories Plastic container
US5871700A (en) * 1993-12-21 1999-02-16 C.A. Greiner & Sohne Gesellschaft M.B.H. Holding device with a cylindrical container and blood sampling tube with such a holding device
US5503283A (en) * 1994-11-14 1996-04-02 Graham Packaging Corporation Blow-molded container base structure
US5664695A (en) * 1995-01-06 1997-09-09 Plastipak Packaging, Inc. Plastic blow molded freestanding container
USD419444S (en) * 1995-11-01 2000-01-25 Crown Cork & Seal Technologies Corporation Container bottom
WO1998009873A1 (en) * 1996-09-09 1998-03-12 Schmalbach-Lubeca Ag Non-rocking, webbed container for carbonated beverages
US6536619B2 (en) 1996-09-09 2003-03-25 Schmalbach-Lubeca Ag Non-rocking, webbed container for carbonated beverages
USD418414S (en) * 1998-06-08 2000-01-04 Cheng Jizu J Container bottom
US5988416A (en) * 1998-07-10 1999-11-23 Crown Cork & Seal Technologies Corporation Footed container and base therefor
US6296471B1 (en) 1998-08-26 2001-10-02 Crown Cork & Seal Technologies Corporation Mold used to form a footed container and base therefor
US6176382B1 (en) 1998-10-14 2001-01-23 American National Can Company Plastic container having base with annular wall and method of making the same
US6634517B2 (en) * 2001-09-17 2003-10-21 Crown Cork & Seal Technologies Corporation Base for plastic container
US20060131257A1 (en) * 2004-12-20 2006-06-22 Ball Corporation Plastic container with champagne style base
US20080023499A1 (en) * 2006-07-27 2008-01-31 Knight John B Dispensing package and methods of using and making
US20090230153A1 (en) * 2006-07-27 2009-09-17 Knight John B Dispensing Package and Methods of Using and Making
US20100012617A1 (en) * 2008-07-16 2010-01-21 Ulibarri Scott M Plastic bottle with superior top load strength
US20100083905A1 (en) * 2008-10-08 2010-04-08 E.S.Robbins Strip weather shielded feeder
DE102008059624A1 (de) 2008-11-28 2010-06-02 Krones Ag Vorrichtung und Verfahren zum Herstellen von Kunststoffbehältnissen und nach diesem Verfahren hergestelltes Kunststoffbehältnis
AT510506B1 (de) * 2010-09-22 2013-01-15 Red Bull Gmbh Bodenkonstruktion für eine kunststoffflasche
JP6012804B1 (ja) * 2015-03-31 2016-10-25 東洋製罐株式会社 缶体

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2391918A1 (fr) * 1977-05-23 1978-12-22 Continental Group Perfectionnements apportes aux conteneurs, notamment aux bouteilles en matieres plastiques

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3043461A (en) * 1961-05-26 1962-07-10 Purex Corp Flexible plastic bottles
US3759410A (en) * 1971-12-15 1973-09-18 Owens Illinois Inc Pressure resistant plastic container
US3757978A (en) * 1971-12-22 1973-09-11 Phillips Petroleum Co Biaxially oriented blow molded article with ribs parallel to seam
US3870181A (en) * 1973-02-12 1975-03-11 Monsanto Co Molecularly oriented bottle
FR2379443A1 (fr) * 1977-02-04 1978-09-01 Solvay Corps creux en matiere thermoplastique

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2391918A1 (fr) * 1977-05-23 1978-12-22 Continental Group Perfectionnements apportes aux conteneurs, notamment aux bouteilles en matieres plastiques

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0244128A3 (de) * 1986-04-21 1988-08-03 Fibrenyle Limited Durch Blasformen gefertigte Behälter
EP0244128A2 (de) * 1986-04-21 1987-11-04 Fibrenyle Limited Durch Blasformen gefertigte Behälter
EP0557332A4 (en) * 1990-11-15 1993-12-08 Plastipak Packaging Inc. Plastic blow molded freestanding container
EP0557332A1 (de) * 1990-11-15 1993-09-01 Plastipak Packaging Inc Aus kunststoff blasgeformter freistehender behälter.
EP0584219A1 (de) * 1991-05-20 1994-03-02 Abbott Lab Sterilisierbarer kunststoffbehälter mit hochfesten seitenwänden.
EP0584219A4 (en) * 1991-05-20 1995-10-18 Abbott Lab High panel strength retortable plastic containers
EP0534012A1 (de) * 1991-09-27 1993-03-31 The Procter & Gamble Company Behälter aus thermoplastischem Material zur Aufnahme von Flüssigkeiten
TR27643A (tr) * 1991-09-27 1995-06-14 Procter & Gamble Sivilarin icerilmesi icin termoplastik maddeden konteyner.
EP0572722A1 (de) * 1992-06-02 1993-12-08 The Procter & Gamble Company Verformungsbeständiger Behälter
TR27426A (tr) * 1992-06-02 1995-04-21 Procter & Gamble Bombelesme sergilemeyen konteyner.
EP0629555A2 (de) * 1993-06-16 1994-12-21 Constar Plastics Inc. Behälter mit Standfuss groben Durchmessers
EP0629555A3 (de) * 1993-06-16 1995-07-19 Constar Plastics Inc Behälter mit Standfuss groben Durchmessers.
WO1999007607A1 (en) * 1997-08-05 1999-02-18 Crown Cork & Seal Technologies Corporation Plastics bottle

Also Published As

Publication number Publication date
ATE8232T1 (de) 1984-07-15
ES255492U (es) 1981-05-16
PT70790A (fr) 1980-03-01
FR2448480B1 (de) 1983-01-07
US4276987A (en) 1981-07-07
FR2448480A1 (fr) 1980-09-05
EP0014507B1 (de) 1984-07-04
AR220259A1 (es) 1980-10-15
ES255492Y (es) 1981-11-16
DE3068393D1 (en) 1984-08-09

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