Flexible, stackable container used for storing a quantity of product and method for manufacturing same

• US 8,602,242 B2
• Filed: 11/06/2009
• Issued: 12/10/2013
• Est. Priority Date: 11/06/2008
• Status: Active Grant

• Current Assignee: PrimaPak, LLC
• Original Assignee: Clear Lam Packaging Incorporated (Sonoco Products Company)
• Inventors: Sanfilippo, John E., Sanfilippo, James J., Skaggs, Jeanne M., Speer, Roy
• Primary Examiner(s): Pickett, J. Gregory
• Assistant Examiner(s): WALKER, NED ANDREW
• Application Number:
  US12/614,201
• Publication Number:
  US 20100140129A1
• Time in Patent Office: 1,495 Days
• Field of Search: 220/6, 220/270, 220/256.1, 220/258.1, 220/258.3, 2203592-3594, 229/125.05, 229/125.09, 229/125.13, 229/125.15, 229/125.17, 229/103.3, 229/104, 229/117.03, 229/117.05, 229/212, 229221-234, 383/61.1, 383/67, 383/78, 383/80, 383/93, 383/95, 383/96, 383/104, 383/119, 383/120, 383/122, 383/41
• US Class Current: 220/6
• CPC Class Codes: B65B 1/06 by gravity flow
• CPC Class Codes: B65B 2220/12 Creating additional longitudinal welds on horizontal or vertical form fill seal [FFS] machines for stiffening packages or for creating package edges
• CPC Class Codes: B65B 2220/18 the primary packaging being bags the subsequent secondary packaging being rigid containers, e.g. cardboard box
• CPC Class Codes: B65B 31/00 Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
• CPC Class Codes: B65B 43/10 by folding the material
• CPC Class Codes: B65B 51/144 Closing paperboard containers
• CPC Class Codes: B65B 61/02 for perforating, scoring , slitting, or applying code or date marks on material prior to packaging scoring ampoules B65B3/006
• CPC Class Codes: B65B 61/184 by applying tabs over discharge openings, e.g. over discharge openings defined by tear or score lines
• CPC Class Codes: B65B 61/186 by applying or incorporating rigid fittings, e.g. discharge spouts
• CPC Class Codes: B65B 61/202 for attaching articles to the outside of a container B65B61/205 takes precedence
• CPC Class Codes: B65B 61/24 for shaping or reshaping completed packages
• CPC Class Codes: B65B 61/28 for discharging completed packages from machines
• CPC Class Codes: B65B 7/06 by collapsing mouth portion, e.g. to form a single flap
• CPC Class Codes: B65B 9/20 the webs being formed into tubes in situ around the filling nozzles
• CPC Class Codes: B65B 9/2042 Means for altering the cross-section of the tube filling opening prior to transversal sealing, e.g. tube spreading devices subdividing filled tubes to form two or more packages by sealing involving displacement of contents B65B9/12
• CPC Class Codes: B65D 21/0213 Containers presenting a continuous stacking profile along the upper or lower edge of at least two opposite side walls
• CPC Class Codes: B65D 2251/0025 of the 47-type
• CPC Class Codes: B65D 2251/0096 integral with the container
• CPC Class Codes: B65D 47/0838 located at an edge of the base element
• CPC Class Codes: B65D 51/20 Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing B65D51/185 takes precedence; co-operating with an auxiliary container for additional articles or materials B65D51/28
• CPC Class Codes: B65D 75/5838 : combined with separate fixed tearing means, e.g. tabs

Abstract

A flexible, stackable container for storing a quantity of a product includes a sealed package that is formed from a single sheet of film having oppositely disposed lateral edges. The package includes a first panel and outwardly extending corner seals that border more than two sides of the first panel, a second panel disposed opposite the first panel and having an end seal, and four lateral sides disposed between the first and second panels. The second panel is formed by tucking portions of the lateral sides proximate the lateral edges inwardly and sealing portions of the film proximate the lateral edges together to form an end seal, the end seal being folded over towards an outer surface of the package.

Claims

1. A flexible, stackable container for storing a quantity of a product, comprising:

a sealed package, the sealed package comprising;

oppositely disposed first and second panels, the first panel having a first planar surface and the second panel having a second planar surface;

an opening for accessing an interior of the package, wherein the opening is defined in the first panel;

at least one corner seal extending outwardly from the first planar surface in a substantially perpendicular direction, wherein the at least one corner seal surrounds more than two peripheral sides of the first panel of the package;

oppositely disposed front and rear panels;

oppositely disposed first and second lateral sides;

a leading seal extending outwardly from the first lateral side, the leading seal being folded over and secured to an outer surface of the package at the first lateral side such that a planar surface of the leading seal is disposed substantially parallel to a planar surface of the first lateral side; and

a trailing seal extending outwardly from the second lateral side, the trailing seal being folded over and secured to an outer surface of the package at the second lateral side such that a planar surface of the trailing seal is disposed substantially parallel to a planar surface of the second lateral side;

wherein;

the package is formed from a single sheet of film having oppositely disposed lateral edges and oppositely disposed leading and trailing edges,

first and second portions of the leading edge are joined by the leading seal,

first and second portions of the trailing edge are joined by the trailing seal,

two peripheral sides of the first panel are tucked inwardly towards the interior of the package and the two peripheral sides are at least partially covered by the leading seal and trailing seal,

the oppositely disposed lateral edges of the single sheet of film are joined together at an end seal disposed within the second panel,

peripheral sides of the first and second lateral sides proximate the second panel are tucked inwardly towards the second panel,

the end seal is folded over towards an outer surface of the package at the second panel such that the end seal is disposed substantially in the plane of the second panel and at least partially covers the peripheral sides of the first and second lateral sides, and

the interior of the package is sealed when the end seal, the leading seal, and the trailing seal are formed.

2. The flexible, stackable container of claim 1, wherein the package is hermetically sealed to retain the product disposed therein.

3. The flexible, stackable container of claim 1, wherein the second panel is substantially flat.

4. The flexible, stackable container of claim 1, wherein the opening comprises a flap defined in a portion of the first panel by a line of reduced strength in the film forming the first panel such that the line of reduced strength yields to separate the flap from a remaining portion of the first panel when a force is applied to the first panel.

5. The flexible, stackable container of claim 4, comprising a pull tab attached to the outer surface of the flap and having a gripping portion that is grasped by a user, wherein the pull tab is attached to the flap such that the flap detaches from the film along the line of reduced strength before the pull tab detaches from the flap when the gripping portion is pulled by a user.

6. The flexible, stackable container of claim 4, wherein the flap is a reclosable flap, adapted to reseal the flap to the remaining portion of the first panel.

7. The flexible, stackable container of claim 1, further comprising a lid fitment that:

(i) is attached to the first panel of the package,

(ii) has a base having a central opening, and

(iii) has a lid that has a shape that is complimentary to the shape of the base and seals when the lid is down onto the base, wherein a portion of the first panel of the package is accessible from the exterior of the container when the lid is separated from the base of the lid fitment.

8. The flexible, stackable container of claim 7, wherein the lid fitment comprises a living hinge connecting the lid to the base.

9. The flexible, stackable container of claim 7, wherein the base of the lid fitment is sealed to the at least one corner seal surrounding the first panel.

10. The flexible, stackable container of claim 7, wherein the base of the lid fitment has a bottom surface surrounding the central opening of the base, and wherein the bottom surface of the base is sealed to the first panel.

11. The flexible, stackable container of claim 7, wherein the lid of the lid fitment comprises an outer wall extending around the perimeter of the lid and having an upper edge, and a central raised portion within the outer wall extending upwardly and having a top panel.