User inflated breachable container, and method

Abstract

Breachable product container 10 is formed by first lamina 10B and opposed second lamina 10C selectively pressed together. Perimeter seal 10S extends around the perimeter of the container. Product chamber 12P and inflatable breaching bubble 12 are between the selectively pressed opposed laminae, within the perimeter seal. Product 16 is contained within the product chamber. Inner divider 14D extends between the product chamber and the breaching bubble. Transfer passage 14 through the inner divider permits inflation of the breaching bubble in response to moderate pressure applied to the product chamber during an extended inflation period. Breaching edge 12E forms part of the perimeter seal around the breaching bubble. The breaching edge provides an edge breach by separating the opposed laminae along the breaching edge in response to substantial pressure applied to the breaching bubble during a brief breaching period. Opposed peel flaps 12C and 12B are formed along the edge breach by the separated opposed laminae. The end-user pulls the peel flaps apart causing detachment of the inner divider for permitting access to the product chamber.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Further objects and advantages of the user inflated breaching bubble and the operation of the transfer passage will become apparent from the following detailed description and drawings (not drawn to scale) and flow chart in which:

FIG. 1A is a plan view of breachable product container 10 showing product chamber 12P and breaching bubble 12 with transfer passage 14 therebetween;

FIG. 1B is a side view of container 10 of FIG. 1A showing product chamber 12P and breaching bubble 12 before inflation (light lines) and during inflation (bold lines);

FIG. 1C is an end view in section of container 10 of FIG. 1 taken generally along reference line IC-IC thereof showing transfer passage 14;

FIG. 1D is a graph depicting the pressure within breaching bubble 12 during Storage, Inflation, Breaching, and Access periods of the opening sequence;

FIG. 1E is a side view of container 10 of FIG. 1A during the breaching period;

FIG. 1F is a side view of container 10 of FIG. 1A during the access period showing opposed peel flaps 12C and 12B;

FIG. 2 is a plan view of breachable product container 20 showing product chamber 22P and breaching bubble 22 with transfer passage 24 therebetween;

FIG. 3A is a plan view of breachable product container 30 showing tortuous transfer passage 34;

FIG. 3B is a side view of container 30 of FIG. 3A showing the container in a deflated condition;

FIG. 4A is a plan view of breachable product container 40 showing closed flapper valve 44V preventing backward flow through transfer passage 44;

FIG. 4B is a side view of container 40 of FIG. 4A showing open flapper valve 44V permitting forward flow through transfer passage 44;

FIG. 5A is a plan view of breachable product container 50 showing closed resilient valve 54V preventing backward flow through transfer passage 54;

FIG. 5B is a side view of container 50 of FIG. 5A showing open resilient valve 54V permitting forward flow through transfer passage 54; and

FIG. 6 is a flow chart showing the basic steps of the general method of gaining access to a product in a the container.

The first digit of each reference numeral in the above figures indicates the figure in which an element or feature is most prominently shown. The second digit indicates related elements or features, and a final letter (when used) indicates a sub-portion of an element or feature.

REFERENCE NUMERALS IN DRAWINGS

The table below lists the reference numerals employed in the figures, and identifies the element designated by each numeral.

Breachable Product Container 10
First Lamina                 10B
Second Lamina                10C
Perimeter Seal               10S
Breaching Bubble             12
Corner Apex                  12A
Opposed Peel Flap            12B
Opposed Peel Flap            12C
Breaching Edge               12E
Product Chamber              12P
Corner Sides                 12S
Transfer Passage             14
Divider                      14D
Product                      16
Inflation Fluid              18
Breachable Product Container 20
Breaching Bubble             22
Header Space                 22H
Product Chamber              22P
Transfer Passage             24
Particle Product             26
Inflation Fluid              28
Header Portion               28H
Interstitial Portion         28I
Breachable Product Container 30
Receiving Portal             30P
Perimeter Seal               30S
Product Chamber              32P
Transfer Passage             34
Product                      36
Inflation Fluid              38
Breachable Product Container 40
Breaching Bubble             42
Product Chamber              42P
Transfer Passage             44
Relief Course                44R
Flapper Valve                44V
Breachable Product Container 50
Breaching Bubble             52
Product Chamber              52P
Transfer Passage             54
Inner Divider                54D
Relief Course                54R
Resilient Valve              54V

General Embodiment—(FIGS. 1 ABCDEF)

Breachable product container 10 is formed by first lamina 10B and opposed second lamina 10C selectively pressed together (see FIG. 1B). Perimeter seal 10S (indicated by a solid bold line in FIG. 1A) extends around the perimeter of the container, and is formed by the selective pressing. Product chamber 12P and inflatable breaching bubble 12 are between the selectively pressed opposed laminae, within the perimeter seal. Product 16 is contained within the product chamber. Inner divider 14D (indicated by single hatched lines), extends between the product chamber and the breaching bubble, and is formed by the selective pressing. Transfer passage 14 (indicated by a wide bold line), through the inner divider permits inflation of the breaching bubble in response to moderate pressure applied to the product chamber during an extended inflation period. Breaching edge 12E (indicated by double hatched lines) forms part of the perimeter seal around the breaching bubble. The breaching edge provides an edge breach by separating the opposed laminae along the breaching edge in response to substantial pressure applied to the breaching bubble during a brief breaching period.

Opposed peel flaps 12C and 12B (see FIG. 1F) are formed along the edge breach by the separated opposed laminae. The end-user pulls the peel flaps apart causing detachment of the inner divider for permitting access to the product chamber. Breaching bubble 12 has a corner with corner apex 12A and two adjacent corner sides 12S (see FIG. 1A). Breaching edge 12E starts at the apex, which is the focus of the separation, and extends along both adjacent sides. The opposed peel flaps are formed by the opposed laminae at the corner and are generally triangular in shape for easy gripping by the end-user. Inflation fluid 18 within the product chamber is transferred through the transfer passage to inflate the breaching bubble during the extended inflation period. The inflation fluid may be ordinary ambient air, or a suitable special purpose fluid such as dry air, or an inert gas such as nitrogen.

The opposed laminae may have multiple layers to provide properties such as waterproofing, UV protection, increased bulk, and strength. The opposed laminae may be any suitable enclosing material such as plastic, paper fabric, cellophane, or bio-degradable matter. Thin mylar plastic is a flexible film with hermetic properties, and may be employed as a container material. The perimeter of the container has a breaching seal along the breaching edge for product access, and a non-breaching seal along the remaining perimeter. The breaching seal may be a frangible laminae union and the non-breaching seal may be a destructive laminae union. The frangible breaching seal is formed at a lower lamina-to-lamina pressure and a lower temperature for a shorter time than the destructive non-breaching seal. The frangible seal is weaker than the destructive seal, and breaches at a lower separation force and requires less compressive pressure applied by the end-user during the breaching period.

General Opening Sequence—(FIG. 1D)

The pressure within the breaching bubble during each period of the opening sequence is graphically depicted in FIG. 1D. During an indefinite storage period (warehousing, shipping, and shelf display), the breaching bubble typically experiences little or no pressure. During storage, the product chamber and the breaching bubble may be partially inflated and flaccid (see FIG. 1B light lines) or completely deflated and pressed flat (see FIG. 3B). During an extended inflation period, the end-user applies moderate pressure to the product chamber (indicated by opposed arrows labeled Ip in FIG. 1B). The pressure restricts the envelope of the product chamber, causing the product chamber to “plump-up” and become firm (see FIG. 1B, bold lines). Inflation fluid is forced from the taut product chamber, through the transfer passage, into the breaching bubble. The pressure within the breaching bubble “ramps-up” during the inflation period, causing the reaching bubble to also “plump-up”.

During a brief breaching period, the end-user applies substantial pressure sharply to the breaching bubble (indicated by opposed arrows Bp in FIG. 1E). The pressure in the breaching bubble rises to the breaching level, separating the opposed laminae along the breaching edge. The expanding bubble breaches into the ambient forming an edge breach. During an access period, the breached bubble is exposed to the ambient, at neutral pressure. The inflation fluid is lost and the container becomes flaccid. The inflation period should last only a moment or so, and the brief breaching period is shorter, perhaps less then a second. The method steps for the opening the product container are described in connection with FIG. 6.

Equilibrium Embodiments—(FIGS. 23AB)

The transfer passage in the equilibrium embodiments, is an open channel with free flowing inflation fluid. The product chamber and breaching bubble are in fluid communication through the transfer passage during the indefinite storage period and the extended inflation period and the brief breaching period. The inflation fluid in the product chamber and the breaching bubble is in a state of fluid equilibrium maintained by migration of inflation fluid forward and backward through the unobstructed transfer passage. In the equilibrium embodiment of FIG. 2, open channel transfer passage 24 is sufficiently narrow to restrain backward flow of inflation fluid 28 from of breaching bubble 22 into product chamber 22P under the substantial pressure applied during the brief breaching period.

During the extended inflation period, the moderate user pressure produces a slow forward inflation transfer. During the brief breaching period, the substantial user pressure produces a higher backward leakage transfer. The backward transfer flow rate (indicated by arrow Fb in FIG. 1E) may be higher than the forward transfer flow rate (indicated by arrow Ff in FIG. 1B) because the substantial breaching pressure is higher than the moderate inflation pressure. However, the total volume of the backward flow (Volume B=Fb×brief time) is far less than the volume of the forward flow (Volume F=Ff×extended time), because the brief breaching period is much shorter than the extended inflation period.

The product chamber has a header space adjacent to the inner divider, which holds the inflation fluid prior to transfer through the transfer passage into the breaching bubble. Preferably, the header space holds enough inflation fluid to plump the breaching bubble during the extended inflation period. The product may be in particle form with inflation fluid filling the space between the product particles. As the particles gravity settle into a more compact format through shipping and handling, the header space enlarges. In the embodiment of FIG. 2, inflation fluid 28 has an active header portion 28H in header space 22H for transfer into the breaching bubble. The inflation fluid also has a passive interstitial portion 28I distributed among product particles 26.

In the embodiment of FIG. 3A, open channel transfer passage 34 is sufficiently tortuous with turns and curves to restrain backward flow of inflation fluid 38 during the brief breaching period. Receiving portal 30P through perimeter seal 30S around product chamber 32P receives inflation fluid 38 and product 36 into the product chamber. Prior to receiving, the empty deflated proto-containers may be easily shipped and handled. A perimeter seal may be pressed across the receiving portal, after receiving the inflation fluid into the product chamber and the breaching bubble, and the product into the product chamber.

Controlled Flow Embodiments—(FIGS. 4AB 5AB)

The transfer passage in the controlled flow embodiments has a one-way valve for controlling the inflation fluid flow. The product chamber and breaching bubble are in fluid communication through the transfer passage during the extended inflation period when the one-way valve is open. The fluid communication is blocked during the brief breaching period when the valve is closed. In the embodiment of FIG. 4, transfer valve 44V is a flapper valve positioned on the breaching bubble side of transfer passage 44. The flapper valve is open (see FIG. 4B) when the pressure in product chamber 42P is greater than the pressure in breaching bubble 42. The flapper valve is closed (see FIG. 4A) when the pressure in the product chamber is less than the pressure in the breaching bubble. The closed valve reduces leakage backward flow during the breaching period. Therefore the transfer passage may be wider without undue loss of breaching pressure during the breaching period.

In the embodiment of FIG. 5A and FIG. 5B, transfer valve 54V is a resilient valve having an internal resilience urging the resilient valve toward closed. The resilient valve is open (see FIG. 5B) when the pressure in product chamber 52P is sufficient to overcome the pressure in breaching bubble 52 plus the internal resilience. The resilient valve is closed (see FIG. 5A) when the pressure in the product chamber is insufficient to overcome the pressure in the breaching bubble plus the internal resilience. The resilient is self-closing at the end of the inflation period.

The one-way valves may completely prevent backward flow and the release of pressure from the breaching bubble. As a consequence, the pressure in the breaching bubble may build-up monotonically. Pressure bleed-off or relief course 44R (see FIG. 4A) and 54R (see FIG. 5A) may extend between the breaching bubble and the product chamber. Relief course 44R extends through the flapper valve, and relief course 54R extends through inner divider 54D. These fine relief courses permit a minor bleed-off flow of inflation fluid to trickle from the breaching bubble back to the product chamber.

Method—(FIG. 6)

The steps of the general method of gaining access to a product in a container are shown in the flow chart of FIG. 6, and described below. The apparatus required for carrying out the above method of operation are disclosed in FIGS. 1-5 and in the related detailed descriptions. The container has a product chamber and a breaching bubble with an inner divider therebetween, formed by opposed laminae.

Applying moderate external pressure to the product chamber during an extended inflation period (see FIG. 1B).

Inflating the breaching bubble by transferring inflation fluid from the product chamber into the breaching bubble through a transfer passage in the inner divider (see FIG. 1B).

Applying substantial pressure to the breaching bubble during a brief breaching period (see FIG. 1E).

Breaching the breaching bubble by separating the opposed lamina forming the breaching bubble (see FIG. 1F).

Forming peel flaps during the breaching step.

Pulling peel flaps apart to detach an inner divider between the product chamber and the breaching bubble.

INDUSTRIAL APPLICABILITY

It will be apparent to those skilled in the art that the objects of this invention have been achieved as described hereinbefore by providing a container which may be partially or completed deflated. Delated containers require have less volume, and less accidental “poppage”. The deflated breaching bubble is inflated to breaching condition by the end-user by pressing on the product chamber. The product chamber and the breaching bubble may be in fluid equilibrium through a transfer passage. Alternatively, the flow of inflation fluid may be controlled by a one-way valve in the transfer passage.

Various changes may be made in the structure and embodiments shown herein without departing from the concept of the invention. Further, features of embodiments shown in various figures may be employed in combination with embodiments shown in other figures. Therefore, the scope of the invention is to be determined by the terminology of the following claims and the legal equivalents thereof.

Claims

1) A container, comprising: a first lamina and an opposed second lamina selectively pressed together;a perimeter seal around the container formed by the selective pressing;a product chamber between the selectively pressed opposed laminae, within the perimeter seal;an inflatable breaching bubble between the selectively pressed opposed laminae, within the perimeter seal;inner divider extending between the product chamber and the breaching bubble and formed by the selective pressing;transfer passage through the inner divider for permitting inflation of the breaching bubble in response to moderate pressure applied to the product chamber during an extended inflation period; andbreaching edge forming part of the perimeter seal around the breaching bubble, for providing an edge breach by separating the opposed laminae along the breaching edge in response to substantial pressure applied to the breaching bubble during a brief breaching period.

2) The container of claim 1, further comprising opposed peel flaps formed along the breaching edge by the separated opposed laminae, which permit detachment of the inner divider and access to the product chamber.

3) The container of claim 2, wherein: the breaching bubble has a corner with an apex and two adjacent sides;the breaching edge extends along the apex and both adjacent sides; andthe opposed peel flaps are formed by the opposed laminae at the corner and are generally triangular in shape.

4) The container of claim 1, wherein the product chamber and the breaching bubble are deflated.

5) The container of claim 1, further comprising: inflation fluid within the product chamber for transferring through the transfer passage to inflate the breaching bubble during the extended inflation period; and product within the product chamber.

6) The container of claim 5, further comprising header space in the product chamber adjacent to the inner divider, for holding inflation fluid prior to transfer through the transfer passage into the breaching bubble.

7) The container of claim 6, wherein the header space holds enough inflation fluid to plump the breaching bubble during the extended inflation period.

8) The container of claim 6, wherein the product is in particle form, and the inflation fluid has a header portion in the header space for transfer into the breaching bubble, and an interstitial portion among the product particles.

9) The container of claim 5, wherein the product chamber and breaching bubble are; in constant fluid communication through the transfer passage during both the extended inflation period and the brief breaching period;in a state of fluid equilibrium maintained by transfer of inflation fluid forward and backward through the transfer passage; andpartially inflated.

10) The container of claim 9, wherein the transfer passage is sufficiently narrow to restrain backward flow of inflation fluid from of the breaching bubble into the product chamber under the substantial pressure applied during the brief breaching period.

11) The container of claim 9, wherein the transfer passage is sufficiently tortuous to restrain backward flow of inflation fluid from of the breaching bubble into the product chamber under the substantial pressure applied during the brief breaching period.

12) The container of claim 5, further comprising: a one-way transfer valve for controlling the transfer of inflation fluid through the transfer passage;which transfer valve is open during the extended inflation period, to permit forward transfer of inflation fluid through the transfer passage from the product chamber to the breaching bubble; andwhich transfer valve is closed during the brief breaching period, to prevent backward transfer of inflation fluid through the transfer passage from the breaching bubble to the product chamber.

13) The container of claim 12, further comprising a pressure bleed-off course from the breaching bubble to the product chamber for permitting minor bleed-off trickle flow of inflation fluid from the breaching bubble back to the product chamber.

14) The container of claim 12, wherein: the transfer valve is a flapper valve positioned on the breaching bubble side of the transfer passage;the flapper valve opens when the pressure in the product chamber is greater than the pressure in the breaching bubble; andthe flapper valve closes when the pressure in the product chamber is less than the pressure in the breaching bubble.

15) The container of claim 12, wherein: the transfer valve is a resilient valve having an internal resilience urging the resilient valve toward closed;the resilient valve opens when the pressure in the product chamber is sufficient to overcome the pressure in the breaching bubble plus the internal resilience; andthe resilient valve closes when the pressure in the product chamber is insufficient to overcome the pressure in the breaching bubble plus the internal resilience.

16) The container of claim 1, further comprising a receiving portal through the perimeter seal around the product chamber for receiving inflation fluid? and product into the product chamber.

17) The container of claim 16, further comprising: inflation fluid in the product chamber and the breaching bubble;product in the product chamber; anda perimeter seal across the receiving portal.

18) A method of gaining access to a product in a container having a product chamber and a breaching bubble and an inner divider therebetween, formed by opposed laminae, comprising the steps of: applying moderate external pressure to the product chamber during an extended inflation period;inflating the breaching bubble by transferring inflation fluid from the product chamber into the breaching bubble through a transfer passage in the inner divider;applying substantial pressure to the breaching bubble during a brief breaching period; andbreaching the breaching bubble by separating the opposed lamina forming the breaching bubble.

19) The method of claim 18, comprising the additional steps of: forming peel flaps during the breaching step; andpulling peel flaps apart to detach an inner divider between the product chamber and the breaching bubble.