US20100084360A1 - Plastic Bottle and Similar Containers Made Of Plastic - Google Patents

Plastic Bottle and Similar Containers Made Of Plastic Download PDF

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Publication number
US20100084360A1
US20100084360A1 US12/516,342 US51634207A US2010084360A1 US 20100084360 A1 US20100084360 A1 US 20100084360A1 US 51634207 A US51634207 A US 51634207A US 2010084360 A1 US2010084360 A1 US 2010084360A1
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US
United States
Prior art keywords
plastic bottle
bottle according
base structures
shoulder section
grooves
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.)
Abandoned
Application number
US12/516,342
Other languages
English (en)
Inventor
Christian Dornbach
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.)
Alpla Werke Alwin Lehner GmbH and Co KG
Original Assignee
Alpla Werke Alwin Lehner GmbH and Co KG
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 Alpla Werke Alwin Lehner GmbH and Co KG filed Critical Alpla Werke Alwin Lehner GmbH and Co KG
Assigned to ALPLA WERKE ALWIN LEHNER GMBH & CO, KG reassignment ALPLA WERKE ALWIN LEHNER GMBH & CO, KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DORNBACH, CHRISTIAN
Publication of US20100084360A1 publication Critical patent/US20100084360A1/en
Abandoned 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
    • 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
    • B65D1/40—Details of walls
    • B65D1/42—Reinforcing or strengthening parts or members
    • B65D1/44—Corrugations
    • 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
    • B65D2501/00—Containers having bodies formed in one piece
    • B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
    • B65D2501/0018—Ribs
    • B65D2501/0027—Hollow longitudinal ribs
    • 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
    • B65D2501/00—Containers having bodies formed in one piece
    • B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
    • B65D2501/0018—Ribs
    • B65D2501/0036—Hollow circonferential ribs

Definitions

  • the invention pertains to a plastic bottle and similar plastic containers for holding fluid substances with an elongated body, one longitudinal end of which is closed by a bottom and the opposite end of which transitions to a neck section with a pour opening, said body having a shoulder section that extends from the neck section to an enlarged diameter area of the body.
  • Containers used in the past which were usually made of tin or non-ferrous metal sheeting, glass or ceramics, are being increasingly phased out by plastic containers.
  • plastic containers are usually used for the packaging of bulk media, such as cleaning utensils, body care products, cosmetics, automotive media, etc.
  • the low weight and lower costs have certainly played a significant role in this substitution.
  • the use of recyclable plastic materials and the more favorable overall energy balance in the manufacture of such materials have also contributed to promoting the acceptance of plastic containers, in particular plastic bottles, by consumers.
  • PET polyethylene terephthalate
  • injection stretch blow molding process representing a combination of injection molding and blow molding.
  • a PET pre-form is first produced in an injection mold in an injection molding process.
  • cold extrusion methods have been proposed for the manufacture of pre-forms.
  • the pre-form has a substantially elongated, cylindrical body and is closed at one longitudinal end.
  • a support ring separates the body from a neck section that has an opening for pouring.
  • the neck section usually already has the shape of the later shape of the neck of the bottle.
  • On the outside of the neck section are pre-existing threaded sections or the like for the attaching of a closure part.
  • the pre-form is de-molded after its manufacture and further processed right away or is intermediately stored for later processing at a blowing machine.
  • the pre-form Prior to further processing in a blowing machine, the pre-form is conditioned, if necessary; then, it is inserted into a blow mold of a blowing machine.
  • the pre-form In the blow mold, the pre-form is finally inflated according to the mold cavity by means of a pressurized gas that is blown in and is also stretched with a stretching mandrel.
  • a pressurized gas that is blown in and is also stretched with a stretching mandrel.
  • There is also a known injection blowing process in which the blowing takes placed directly following the injection of the pre-form.
  • the pre-form remains on the injection core, which also constitutes the stretching mandrel.
  • the pre-form is also inflated according to the mold cavity of a blow mold by means of pressurization and in the process stretched by the stretching mandrel that is placed on the injection core or vice versa. Then, the finished plastic bottle is de-molded.
  • the extrusion blowing machines used for the extrusion blowing process generally include one or more extruders to feed the necessary plastic material.
  • the outlet of the extruder is connected to an extruder head, with the extruded tube exiting from the discharge nozzle of the extruder head, said nozzle preferably having an opening width that can be regulated.
  • the extruded plastic tube can be constructed in one or more layers.
  • the tube exiting the discharge nozzle is continuously or quasi-continuously fed to a blow mold and inflated through pressurization using a blowing mandrel retracted into the mold cavity. Then, the blown plastic bottle is de-molded from the mold cavity.
  • Plastic bottles and similar plastic containers are produced in very high volumes and are therefore constantly subject to optimizations that save costs. Therefore, for reasons of cost, but also for ecological reasons, material savings is also sought.
  • the required stiffness of the plastic bottles must be maintained in the process. This stiffness requirement places limits on engineering and design efforts for plastic bottles with a fill volume of 50 ml to 300 ml.
  • the object of the present invention is to create a plastic bottle that exhibits the required stiffness.
  • the required stiffness should be accomplished without the need for additional material.
  • the existing manufacturing methods should not need to be modified.
  • the solution to this object is a plastic bottle and similar plastic containers having a shoulder section that is provided with structuring in at least a portion of its axial extent and along its circumference. Further developments and/or advantageous embodiments of the invention are set forth herein.
  • a plastic bottle and similar containers to hold fluid substances comprises an elongated body, one side of which is sealed by a bottom and the opposite side of which transitions to a neck section with an opening for pouring.
  • a shoulder section extends from the neck section to an area of the body that is of a larger diameter. The shoulder section is provided with structuring in at least a part of its axial extent and circumference.
  • the structuring in the shoulder section of the plastic bottle provides the bottle with the desired stiffness.
  • the plastic bottle provided with the structuring exhibits at least the same stiffness as a similar plastic bottle with a greater wall thickness. With the same wall thickness, the stiffness is increased. This provides the plastic bottle with a higher storage longevity and it can also be used for filling systems operated at high temperatures.
  • the structuring is arranged evenly along the circumference of the shoulder section and is designed as repeating, annular geometric base structures.
  • the repeating annular geometric base structures are easily created and directly result in an increased stiffness of the structured areas.
  • the geometric base structures that repeat along the circumference of the shoulder section lead to an even strengthening of the wall are along the circumference.
  • plastic bottle provides that the geometric structures are separate from one another by means of grooves that run essentially in the longitudinal direction of the body.
  • the grooves that run essentially in the longitudinal direction can be arranged parallel to the longitudinal axis or they can also form an included angle with the longitudinal axis of the body of up to 45°.
  • the geometric base structures can thus comprise longitudinal sides that run in a projection parallel to the longitudinal axis of the body or that are tilted.
  • transverse and/or longitudinal grooves have a depth of about 0.5 mm up to about 1.5 mm.
  • the transverse grooves and the longitudinal grooves can also have depths that differ from one another.
  • the stiffness is further increased by providing the transverse and/or longitudinal grooves with a notched base whose width measured perpendicular to the groove's length is about 0.2 mm to about 1.2 mm.
  • a practical variation of the plastic bottle provides that the walls of the transverse and/or longitudinal grooves form an opening angle ( ⁇ ) together that is about 50° to about 100°.
  • the angle included by the walls of the transverse grooves and the longitudinal grooves can be designed to be different from one another.
  • annular structuring it has been shown to be advantageous for the achievable stiffness of the plastic bottle for the annular structuring to have 9 to 15, preferably 10 to 14, geometric base structures in the shoulder section that are evenly arranged along the circumference.
  • a very practical embodiment of the invention provides that two or more rings of geometric base structures are located in the shoulder section.
  • each ring has the same number of geometric base structures, each of which expeditiously having the number of base structures indicated above and being separated from one another through longitudinal grooves that extend across adjacent ring structures.
  • the base structures of adjacent rings do not have to be identical, but can be different from one another according to the respective section of the shoulder section, such as to take into account different curvatures or different diameters.
  • trapezoidal base structures are advantageously placed in the section of the shoulder section near the neck.
  • the base structures have a height that is 1 to 1.5 times the width of the base structure. This results in advantageous strengths and at the same time the contour of the plastic bottle can be incorporated into the shape.
  • the design of the plastic bottle according to the invention, with structuring in the shoulder section, has proven to be useful in particular for plastic bottles with a fill volume of 50 ml to 330 ml.
  • the structuring in the shoulder section of the plastic bottle can be applied in plastic bottles that are produced in a stretch-blowing or extrusion blowing process.
  • the structuring is produced inside the mold cavity of a blow mold during the blowing process. This is easily done by designing the walls of the mold cavity accordingly.
  • FIG. 1 A perspective view of a plastic bottle designed according to the invention
  • FIG. 2 A side view of the plastic bottle in FIG. 1 ;
  • FIG. 3 An axial section of the plastic bottle
  • FIG. 4 A detail according to arrow IV in FIG. 3 .
  • a plastic bottle designed according to the invention is provided in general with the label 1 in FIG. 1-3 .
  • An example of a plastic bottle is one with a fill volume of 125 ml.
  • the plastic bottle 1 has an elongated, rotationally symmetric body 2 , one longitudinal end of which is closed off with a bottom 3 . At the other end, the body transitions to a neck section 4 that comprises an opening for pouring 5 . On the outside of the neck section 4 are threaded sections that enable a closure to be screwed on.
  • a shoulder section 6 extends from the neck section 4 to an area of enlarged diameter 7 of the body 2 . However, the area of enlarged diameter 7 does not necessarily have to be the area of enlarged diameter of the body 2 of the plastic bottle 1 .
  • These types of plastic bottles are usually produced in a stretch-blowing process. However, they can also be produced in an extrusion blowing process.
  • the shoulder section 6 of the body 2 is provided with structuring 10 along its axial length and its circumference.
  • the structuring consists of two rings 11 , 12 of geometric base structures 13 , 14 that are arranged evenly along the circumference of the shoulder section 6 .
  • the two rings 11 , 12 of base structures 13 , 14 are separated from one another by a transverse groove 15 .
  • Another transverse groove 15 forms the end of the shoulder section 6 that transitions to the enlarged diameter area 7 of the body 2 .
  • the geometric base structures 13 , 14 are essentially rectangular or trapezoidal and are separated from one another through grooves 16 running in the longitudinal direction.
  • the longitudinal grooves 16 run in a side projection parallel to the longitudinal axis of the plastic bottle 1 .
  • the grooves that run in the longitudinal direction can also be set at an angle of up to 45° with respect to the longitudinal axis.
  • the geometric base structures 13 , 14 have an axial height that is about one to one and a half times their width. It is understood that the height and the width are understood to mean the wound dimensions.
  • FIGS. 1 and 2 show that the base structures 13 near the neck section 4 have an essentially trapezoidal shape with a larger height than width. The trapezoidal base structures 13 are directly adjacent to the neck section 4 .
  • the second ring 12 of base structures consists of approximately square base structures 14 .
  • the number of base structures 13 , 14 is the same in the two rings 11 , 12 and is typically about 9 to 15, preferably 10 to 14.
  • FIG. 4 shows the bottle wall section containing a transverse groove 15 identified with arrow IV in FIG. 3 at a greater scale.
  • the transverse groove 15 is lined by walls 18 , 19 that typically form an opening angle ( ⁇ ) together of 50°-100°. In the section IV shown, the opening angle ⁇ is about 90°.
  • the two walls 18 , 19 sit adjacent to a notched base 17 whose width measured perpendicular to the length of the groove is about 0.2 mm to about 1.2 mm.
  • the groove 15 has a depth T of about 0.5 to 1.5 mm.
  • the dimensions of the grooves have been explained through the example of a transverse groove 15 . It is understood that the dimensions of the longitudinal grooves 16 are designed similarly and fall within the ranges indicated. In the process, the dimensions of the transverse grooves 15 and the longitudinal grooves can be different from one another. Usually, the longitudinal grooves have a narrower notched base than the transverse grooves. Also, their opening angle is typically smaller.
  • the invention has been explained through the example of a plastic bottle with a fill volume of 125 ml. Basically, the invention is not limited to these kinds of fill volumes. It has been shown that providing structuring 10 in the shoulder section 6 , especially for plastic bottles with fill volumes of 50 ml to 330 ml, brings advantages with regard to achievable stiffnesses. Whereas in the exemplary embodiment shown the entire shoulder section 6 is provided with structuring 10 , it is understood that they can also be provided only in part of the axial length and circumference of the shoulder section.
  • the structuring can be applied to plastic bottles that are produced in the stretch-blowing process or in an extrusion blowing process. In the process, it has been shown to be particularly advantageous if the structuring is produced during the blowing process within the mold cavity of the blow mold.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
US12/516,342 2006-11-23 2007-10-15 Plastic Bottle and Similar Containers Made Of Plastic Abandoned US20100084360A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH0188/06 2006-11-23
CH18892006 2006-11-23
PCT/EP2007/008926 WO2008061594A1 (de) 2006-11-23 2007-10-15 Kunststoffflasche und dergleichen behälter aus kunststoff

Publications (1)

Publication Number Publication Date
US20100084360A1 true US20100084360A1 (en) 2010-04-08

Family

ID=37895941

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/516,342 Abandoned US20100084360A1 (en) 2006-11-23 2007-10-15 Plastic Bottle and Similar Containers Made Of Plastic

Country Status (8)

Country Link
US (1) US20100084360A1 (pt)
EP (1) EP2091824B1 (pt)
AT (1) ATE545594T1 (pt)
BR (1) BRPI0717222B1 (pt)
ES (1) ES2382580T3 (pt)
MX (1) MX2009005436A (pt)
RU (1) RU2457915C2 (pt)
WO (1) WO2008061594A1 (pt)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017100317A1 (en) * 2015-12-08 2017-06-15 Ring Container Technologies, Llc Container and method of manufacture
JP2019077486A (ja) * 2017-10-26 2019-05-23 キリン株式会社 樹脂製ボトル

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD434332S (en) * 1998-12-29 2000-11-28 PEMI Trade S.R.O. Bottle
USD442091S1 (en) * 1999-05-28 2001-05-15 Graham Packaging Company, L.P. Jug-style dome for a plastic container
US7051890B2 (en) * 2002-03-27 2006-05-30 Yoshino Kogyosho Co., Ltd. Synthetic resin bottle with circumferential ribs for increased surface rigidity

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4170622A (en) * 1977-05-26 1979-10-09 Owens-Illinois, Inc. Method of making a blown hollow article having a ribbed interior surface
US5224614A (en) * 1992-02-07 1993-07-06 The Procter & Gamble Company Non-handled lightweight plastic bottle with a substantially rigid grip design to facilitate pouring without loss of control
US5690244A (en) * 1995-12-20 1997-11-25 Plastipak Packaging, Inc. Blow molded container having paneled side wall
US5988417A (en) * 1997-11-12 1999-11-23 Crown Cork & Seal Technologies Corporation Plastic container having improved rigidity
US6213326B1 (en) * 1998-06-09 2001-04-10 Graham Packaging Company, L.P. Grippable blow-molded container providing balanced pouring capability
US6497333B1 (en) * 2000-05-09 2002-12-24 Paradigm Packaging, Inc. Panel stiffeners for blow-molded plastic containers
JP4679038B2 (ja) * 2003-02-28 2011-04-27 株式会社吉野工業所 合成樹脂製ボトル型容器
RU44106U1 (ru) * 2004-11-04 2005-02-27 Общество с ограниченной ответственностью "Петромасло" Бутылка
DE102007049750A1 (de) * 2007-10-16 2009-04-23 Krones Ag Pouch-Flasche

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD434332S (en) * 1998-12-29 2000-11-28 PEMI Trade S.R.O. Bottle
USD442091S1 (en) * 1999-05-28 2001-05-15 Graham Packaging Company, L.P. Jug-style dome for a plastic container
US7051890B2 (en) * 2002-03-27 2006-05-30 Yoshino Kogyosho Co., Ltd. Synthetic resin bottle with circumferential ribs for increased surface rigidity

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017100317A1 (en) * 2015-12-08 2017-06-15 Ring Container Technologies, Llc Container and method of manufacture
US10259609B2 (en) 2015-12-08 2019-04-16 Ring Container Technologies, Llc Container and method of manufacture
JP2019077486A (ja) * 2017-10-26 2019-05-23 キリン株式会社 樹脂製ボトル

Also Published As

Publication number Publication date
EP2091824A1 (de) 2009-08-26
RU2009123842A (ru) 2011-01-10
EP2091824B1 (de) 2012-02-15
ATE545594T1 (de) 2012-03-15
RU2457915C2 (ru) 2012-08-10
ES2382580T3 (es) 2012-06-11
MX2009005436A (es) 2009-06-02
BRPI0717222B1 (pt) 2018-05-22
BRPI0717222A2 (pt) 2013-09-24
WO2008061594A1 (de) 2008-05-29

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ALPLA WERKE ALWIN LEHNER GMBH & CO, KG,AUSTRIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DORNBACH, CHRISTIAN;REEL/FRAME:022889/0103

Effective date: 20090306

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION