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Publication numberUS3923178 A
Publication typeGrant
Publication dateDec 2, 1975
Filing dateJul 25, 1974
Priority dateJul 25, 1974
Publication numberUS 3923178 A, US 3923178A, US-A-3923178, US3923178 A, US3923178A
InventorsWelker Iii George W
Original AssigneeAmerican Home Prod
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Container
US 3923178 A
Abstract
A plastic container is described for liquids which are in part capable of migrating through the plastic. The container has a relatively rigid top and bottom connected by plurality of relatively narrow walls and a plurality of relatively wide wall located between the narrow walls. The wide walls are initially planar but assume a concaved configuration as the pressure in the container is reduced due to migration of moisture through the walls of the container, while the narrow walls rigid top and bottom remain unchanged in configuration.
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Description  (OCR text may contain errors)

United States Patent [191 Welker, III

1 1 Dec. 2, 1975 1 1 CONTAINER [75] Inventor: George W. Welker, III,

Downington, Pa.

[73} Assignee: American Home Products Corporation, New York, N.Y.

[22] Filed: July 25, 1974 [21] Appl. No.: 491,905

[52] US. Cl 215/] C; 206/525; 426/130 [51] Int. Cl. A61J 9/00 [58] Field of Search 215/] C, 11 E; 150/.5;

[56] References Cited UNITED STATES PATENTS 6/1964 Meissner 215/32 3.369.690 2/1968 Hayes 215/] C UX D25,048 1/1896 Sherwood D9/l67 FOREIGN PATENTS OR APPLICATIONS 978.705 12/1964 United Kingdom 215/1 C 868.170 5/1961 United Kingdom 215/1 C Primary E.raminerDonald F. Norton Attorney, Agent, or Firm-Joseph Martin Weigman [57] ABSTRACT 2 Claims, 7 Drawing Figures U.S. Patent Dec. 2, 1975 Sheet 1 of2 3,923,178

US. Patent Dec. 2, 1975 Sheet 2 f2 3,923,178

FIG.6

FIG.5

' 1 CONTAIN-ER. I

The invention is directed to plastic containers for liquids. More particularly the invention is directed to contai'ners for liquids in which at least a part of the liquid tends to migrate through the walls of the container causing a reduced internal pressure that tends to collapse the container under the ambient pressure. The present invention makes use of the tendency of the container to reduce in volume during storage to produce a container the appearance of which is enhanced by volume reduction.

The advent of the form-fill-seal packaging which has resulted from the invention described in US. Pat. No. 3,325,860 has resulted in the production of low cost, filled and sealed sterilized materials. However, it has been found that many liquids when stored in plastic containers tend to have a portion of the liquid migrate through the walls of the container.

Depending upon the plastic material utilized, differential permeation may occur where a corresponding equal volume of gas cannot enter the container to replace the escaping liquid. This condition can be further aggravated because the container does not have a standard separate closure system which could function as a pressure equalizing vent. This results in a reduced volume and a reduced pressure in the container. The pressure differential between the ambient and internal pressures causes the container to collapse, or occupy less volume, and present an unpleasant appearance on extended storage.

It is an object of the present invention to provide a container for liquids subject to moisture migration in which the appearance of the package is enhanced upon storage.

It is another object of the present invention to provide a container for liquids subject to moisture migration which limits the volume reduction of the container to selected areas.

It is a further object of the present invention to provide a container for liquids subject to moisture migra-- tion in which most of the surface of the container is resistant to flexing and a portion of the surface of the container is subject to flexing.

It is still another object of the present invention to provide a container for liquids subject to moisture migration in which pre-selected portions of the package are adapted to assume a concaved position due to pressure differentials arising during extended storage.

Other and further objects of the invention will be apparent from reading the following description in conjunction with the drawings in which:

FIG. 1 is a front elevational view, partly in section, of a container embodying the present invention;

FIG. 2 is a side elevational view, partly in section, of the container of FIG. 1;

FIG. 3 is a top plan view of the container of FIG. 1;

FIG. 4 is a cross-sectional view taken generally along line 44 of FIG. 3;

FIG. 5 is a cross-sectional view taken across the length of the container of FIG. 1 showing a new configuration occupying less volume;

FIG. 6 is a cross-sectional view taken across the width of the container of FIG. 1 showing a smaller volume configuration; and

FIG. 7 is a cross-sectional view taken generally along line 77 of FIG. 5.

The objects of the present invention may be achieved in a plastic container for liquids which are, at least in part, capable of migrating through the plastic in which the container has a relatively rigid top and bottom joined by a plurality of relatively narrow wall portions and a plurality of relatively wide wall portions spaced between the relatively narrow wall portions.

As may be seen in FIG. 1, the container 10 is made up of a relatively rigid top portion 12 that is further comprised of a rounded shoulder portion 14, a planar portion 16, a neck portion 18 and an integral closure 20. It is advantageous that the neck 18 contain threads 22 which will cooperate with a dispensing device after the closure 20 is removed. A specific dispensing device contemplated is a baby nipple which typically has a soft pliable nipple connected to a container by a threaded ferrule.

The container 10 is further comprised of a relatively rigid bottom portion 24 which has a central portion 26 surrounded by an arcuate outer portion 28. The top portion 12 is joined to the bottom portion 24 by a plurality of relatively narrow walls 30, 32, 34, 36 and by a plurality of relatively wide walls 38, 40, 42, and 44. For esthetic reasons it has been found desirable that the walls 42, 44 be even wider than the walls 38, 40. Each of the wide walls is connected between two narrow walls as may be seen in FIG. 3.

In an especiallyadvantageous embodiment the narrow walls have a dimension A which is about [2 inch and two of the wide walls have a dimension B which is about 1 inch while the remaining two wide walls have a dimension C which is about 1 1 inch. The total height of the widest walls as shown in dimension D (FIG. 1) is about 2 inches.

The liquid contents 46 are contained within the chamber 48 defined by the container.

As may be seen in FIGS. l4-, in the container as initially filled the relatively wide walls are planar, that is, they are straight and undeformed.

After the container 10 has been stored for a period of time, which may be two weeks to two years, a portion of the liquid contents 46 has migrated through the walls and escaped the container. The resulting reduction in volume reduces the pressure within the chamber 48. This causes a differential pressure between the chamber 48 and the ambient atmosphere. Due to the pressure thus applied the relatively wide walls 38, 40, 42, 44 become concaved as is shown in FIGS. 5, 6 and 7. The narrow walls 30, 32, 34, 36 and the top portion 12 and the bottom portion 24 are less susceptible to deformation and show no visible deformation during the normal shelf life of the liquid contents.

The resulting package with the concaved wide walls presents a pleasing appearance. There is no deformation apparent to the consumer. Thus, by controlling the location of deformation the phenomenon of moisture migration may be utilized to enhance the container appearance during storage.

What is claimed is:

l. A sealed plastic container for liquids at least a portion of which is capable of migrating through the plastic comprising:

1. A relatively rigid top;

2. A relatively rigid bottom;

3. At least four relatively narrow, substantially planar wall portions connecting said top and bottom;

whereby the relatively wide wall portions become concaved when the liquid migrates through the plastic and the internal pressure becomes less than the ambient pressure while the relatively narrow wall portions, top and bottom, retain their initial shape.

2. A container as defined in claim 1 in which the height of the widest wall portions is about four times the width of said narrow wall portions.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3138279 *Aug 3, 1962Jun 23, 1964Fmc CorpContainer and closure
US3369690 *Dec 28, 1964Feb 20, 1968American Can CoPlastic container with integral carrying handle
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4101041 *Aug 1, 1977Jul 18, 1978Becton, Dickinson And CompanyPrefillable, hermetically sealed container adapted for use with a humidifier or nebulizer head
US4724855 *Aug 29, 1986Feb 16, 1988Jackson Albert PDenture power washer
US4749092 *Jul 27, 1987Jun 7, 1988Yoshino Kogyosho Co, Ltd.Saturated polyester resin bottle
US4946053 *Sep 15, 1989Aug 7, 1990General Electric CompanyOvalized label panel for round hot filled plastic containers
US5092474 *Aug 1, 1990Mar 3, 1992Kraft General Foods, Inc.Plastic jar
US5392937 *Sep 3, 1993Feb 28, 1995Graham Packaging CorporationFlex and grip panel structure for hot-fillable blow-molded container
US6059153 *Oct 9, 1998May 9, 2000Kraft Foods, Inc.Container for pourable food products
US6273282 *Mar 31, 2000Aug 14, 2001Graham Packaging Company, L.P.Grippable container
US6575320 *Jun 26, 2001Jun 10, 2003Yoshino Kogyosho Co., Ltd.Bottle-type plastic container with vacuum absorption panels for hot-fill applications
US6662960Feb 5, 2001Dec 16, 2003Graham Packaging Company, L.P.Blow molded slender grippable bottle dome with flex panels
US6763969May 9, 2000Jul 20, 2004Graham Packaging Company, L.P.Blow molded bottle with unframed flex panels
US6923334Oct 15, 2003Aug 2, 2005Graham Packaging Company, L.P.Blow molded slender grippable bottle having dome with flex panels
US6929138Jul 16, 2003Aug 16, 2005Graham Packaging Company, L.P.Hot-fillable multi-sided blow-molded container
US6997336Sep 16, 2003Feb 14, 2006Graham Packaging Company, L.P.Plastic cafare
US7296702 *Jul 5, 2005Nov 20, 2007Yoshino Kogyosho Co., Ltd.Synthetic resin bottle
US7823737 *Feb 2, 2005Nov 2, 2010Graham Packaging Company, L.P.Plastic container with substantially flat panels
US8881922 *Dec 16, 2011Nov 11, 2014Graham Packaging Company, L.P.Hot fill container having improved crush resistance
US20100006580 *Jun 11, 2009Jan 14, 2010Sidel ParticipationsThermoplastic container, in particular a bottle, having a partially prismatic triangular body
WO2002002419A1 *Jun 29, 2001Jan 10, 2002Schmalbach LubecaPlastic container having geometry minimizing spherulitic crystallization below the finish and method
WO2005123517A1 *Jun 16, 2005Dec 29, 2005Marcadent LucaNew type of hot-fillable bottle
Classifications
U.S. Classification215/381, 206/525, 215/382, 426/130
International ClassificationB65D1/02, B65D79/00
Cooperative ClassificationB65D2501/0081, B65D79/005, B65D1/0223
European ClassificationB65D79/00B, B65D1/02D