Flexible package having integrated slit member
A flexible package having front, back, and bottom panel portions (preferably gusseted). The front and back panel portions each preferably include longitudinal edges that can be joined together to create respective side seals. Each of the respective side seals can include a slit portion having a slit member. The slit member preferably includes a detachment portion and an anchor portion. The detachment portion of the slit member is detachable from a portion of the side seal to provide a tie or a looped handle for use in tying and/or handling the flexible package. The anchor portion provides support and reinforcement to prevent complete detachment of the slit member.
The present application claims priority to U.S. Provisional Patent Application 60/506,912 filed Sep. 29, 2003, entitled, “FLEXIBLE PACKAGE HAVING INTEGRATED SLIT”, which is fully incorporated by reference herein in its entirety.
FIELD OF THE INVENTIONThe present invention relates generally to flexible packaging and, more particularly, to flexible packaging having at least one slit member formed and integrated therein.
BACKGROUND OF THE INVENTIONConventional flexible packages generally include integrated closeable devices, sliding means, or other devices designed to allow a user to selectively gain access into the pouch or package. Other simpler packages can come with external, non-integrated, twist ties and other tying means. In use, an end user must pinch or compress an open-end portion of the applicable package such that a twist tie is wrapped around the pinched area to provide selective closure.
Such simplistic tying techniques lack meaningful application in storage and handling of materials such as food, liquid, and the like. In addition, durability and efficiency is lacking as twist ties can become undesirably detached and lost. Further, unattached and distinct twist ties are often stored remote from the flexible packages thus imposing potential inconveniences on the user. Traditional twist ties are also often too short to accommodate storage and handling functions. Traditional twist ties and techniques lack flexibility for use as handles.
As a result, there is a need for a flexible package that substantially solves the above-referenced problems with conventional package designs, configurations, and manufacturing methods.
SUMMARY OF THE INVENTIONThe present invention solves many of the problems that plague conventional flexible packages and packaging methods. Embodiments of the present invention are directed to a package generally including at least one slit, tie and/or handle member formed or integrated therein. The flexible package can include front and back panels. Further, a bottom panel can be included. Any of the panels can be gusseted or otherwise formed with the processes and techniques known to one skilled in the art.
In one embodiment, the package of the present invention includes a front panel, a back panel, and a bottom panel (preferably gusseted). The front and back panels can be sealed together at longitudinal edges of the same front and back panels to create respective side seals. Each of the side seals for the front and back panels can include a slit portion having a slit member or a slit member may be disposed generally adjacent to each of the side seals. The slit member can follow or extend along at least a portion of the longitudinal length of the side seals to define a detachment portion and an anchor portion. In use, the detachment portion of the slit member is detachable from the side seal to provide a tie for use in handling and tying the flexible package. The anchor portion of the slit member provides support and reinforcement such that employment of the slit member will be limited to the released detachment portion. As such, complete removal of the at least one slit member from the longitudinal edge(s) is limited up to the anchor portion. However, alternative embodiments can provide means of providing complete detachment of the slit member at or proximate the anchor portion to allow complete removal for use in tying the opening of the package. As such, a temporary slit member would be attached or integrated with the package until use. The slit member of the present invention can be utilized to selectively re-usably close or pinch off the flexible package opening. In addition, the slit member or slits can be utilized for hanging of the package for use, filling, and handling.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring to
The package panel portions 12-15 are generally constructed of flexible sheet material such as polyethylene, polyester, metal foil, polypropylene, or polyethylenes laminated with other materials such as nylon, polyester, and other materials known to one skilled in the art. To provide for higher barriers, embodiments can use combination layers or laminates of said materials, and material of the like. Generally, in such embodiments, a material having preferred sealing characteristics can be joined or bonded to a material having a different preferred characteristic (i.e., beneficial oxygen barrier properties). Preferably, the package of the present invention is to be formed into a stand-up pouch, but it could be a pouch that displays lying down, or in other package and pouch shapes and configurations known to one skilled in the art.
In one embodiment the front panel portion 12 and the back panel portion 14 will be formed of one contiguous web material. In alternative embodiments, at least one of the panel portions 12-15 can be distinct web materials joined or sealed to other respective panel portions to form the package 10 of the present invention. For instance, the front panel portion 12 and the back panel portion 14 can be joined to each other from distinct non-contiguous web sheets of material, and one of the panel portions 12-14 can further extend to define the bottom panel portion 15. The bottom panel portion 15 in the various configurations forming a stand up pouch can include a gusset known to those skilled in the art to further promote operative expansion and contraction of the package 10 and its respective capacity in accordance with the receipt and removal of material within the package 10.
Referring to
In one embodiment, the first front longitudinal edge 20 can be sealably joined to the first back longitudinal edge 24 along the length of the edges 20, 24 to form a first side seal 16. Similarly, the second front longitudinal edge 22 can be sealably joined to the second back longitudinal edge 26 along the length of edges 22, 26 to form a second side seal 18. These side seals 16, 18 generally define the side boundaries of the package 10 and can be sealably joined using heat, adhesive, and other bonding techniques known to one of ordinary skill in the art.
Each of the side seals 16, 18 define the material comprising the slit portions 30, 40 of the present invention. As illustrated in
The slit members 32, 42 can be formed from the side seals 16, 18 utilizing die-cutting and other techniques known to one of ordinary skill in the art. Regardless, the slit members 32, 42 are adapted to add tying, hanging and/or handling functionality to the package 10. The detachment portions 34, 44 are selectively detachable from the side seals 16, 18 up to a termination point at the respective anchor portions 36, 46. The anchor portions 36, 46 can be reinforced or formed in a predefined shape to increase strength and durability of the slit members 32, 43 during use. For instance, in one embodiment, the anchor portions 36, 46 are formed in an arcuate or spiral shape to reinforce the slit members 32, 42 and limit complete detachment of the slit members 32, 42 during operational tugging or hanging of the slit members, as shown in
In yet another embodiment, a re-closeable access device 50 can be integrated or attached to the panels 12, 14 in substantial alignment with the anchor portions 36, 46, as best shown in
In addition to the incorporated access devices, known zipper devices for providing selective access in through the top of the package 10 are also envisioned for use with the present invention, as shown in
Further, the length of the slit portions 30, 40 defining the length of the slit members 32, 42 can include at least one perforations and/or designated land regions 33 (
In the embodiments of
An alternative embodiment of the loop slit member/handle 48 package is shown in
The slit members 32, 42 can be utilized by the end user to tie off or closeably cinch an access opening of the package 10 proximate the anchor portions 36, 46. In those embodiments having two slit members 32, 42, the ends of the detachment portions 34, 44 can be tied together to close off an access or opening in the package 10.
Referring to
As shown in
Referring primarily to
As the now forming package 10 leaves the side seal station 68 along the web path of the machine, each package 10 can enter a cooling station 70. The cooling station 70 can include at least one cooling bar 71 which is applied along the various seals, i.e., the seals created at the side seal station 68, to lower the web material temperature to further promote and stabilize the bonds created. Once the cooling bars 71 have performed the cooling functions upon application, each package 10, still contiguously linked with adjacent package 10, can be configured to have the at least one slit portion 30, and preferably both the first slit portion 30 and the second slit portion 40, or the loop 48.
While various perforation, cutting, and like apparatus can be employed, at least one embodiment will utilize a steel-rule die 72 at the die cut station 73 to cut out or define the slit portions 30, 40 from at least a portion of the respective side seals 16, 18. As such, at least a portion of the slit members 32, 42 will be detached from the seals 16, 18 at the detachment portions 34, 44. Again, the cut at the die cut station 73 can initiate a cut for the slit members 32, 42 that avoids complete detachment until tearing or actuation by the end user is later initiated along perforations, land regions, and the like. Other cutting, slicing, and a myriad of various mechanisms and techniques known to one skilled in the art can be employed at the die cut station 73 for forming and defining the slit portions 30, 40 and their respective component structures.
Separation of the distinct package 10 generally occurs at the cut-off station 74. The cut-off station 74 can include a cutting device such as a guillotine, blade or other known mechanism that can trim the edges of the package 10 and cut the end package 10 from the adjacently joined package 10. Other trimming devices and mechanisms can further be employed to trim the various edges of the package 10.
With this manufactured product, a package having at least one integrated slit member is created. Various handles, graphics, closeable and re-closeable devices, gusseted portions, and like features known to one skilled in the art are also envisioned for use with this invention and can be implemented without deviating from the spirit and scope of the present invention. All references to front, back, bottom, and the like are merely for demonstrative purposes and are not intended to limit the variations and positional references and orientations of the panels in the present invention.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is, therefore, desired that the present embodiment be considered in all respects as illustrative and not restrictive. Similarly, the above-described methods and techniques for manufacturing the present invention are illustrative sequential processes and are not intended to limit the methods of manufacturing the present invention to those specifically defined herein. It is envisioned that various depicted steps can be performed in differing substantive and sequential order. In addition, various unspecified steps and procedures can be performed in between those steps described herein without deviating from the spirit and scope of the present invention and the method of manufacturing the same.
Claims
1. A flexible package comprising:
- a plurality of generally flexible panel portions defining an inner cavity capable of holding material contents, the plurality of flexible panels comprising:
- a front panel portion having first and second generally parallel longitudinal edge portions;
- a back panel portion having first and second generally parallel longitudinal edge portions, the first and second generally parallel longitudinal edge portions of the front and back panel portions being joinable to define the inner cavity; and
- at least one slit member being provided to at least a portion of one of the generally parallel longitudinal edge portions, the slit member having an anchor portion and at least one land portion such that a portion of the at least one slit member remains attached to the flexible package at the anchor portion and a portion of the at least one slit member proximate the at least one land portion is detachable from the flexible package.
2. The flexible package of claim 1, further including a bottom panel portion extending between the front and back panel portions.
3. The flexible package of claim 2, wherein the bottom panel portion is gusseted to facilitate generally upright standing of the front and back panel portions.
4. The flexible package of claim 1, further including at least one re-closeable device disposed to at least the front panel portion to provide re-closeable access to the cavity.
5. The flexible package of claim 4, wherein the re-closeable device is a re-closeable zipper device.
6. The flexible package of claim 1, wherein the at least one land is a perforated region in the flexible package.
7. The flexible package of claim 1, wherein the generally parallel longitudinal edges portions are joinable to define at least one side seal, the at least one slit member being partially provided with the at least one side seal.
8. The flexible package of claim 4, wherein at least one of the anchor portions is shaped to facilitate reinforcement of the slit member with the at least one of the longitudinal edge portions.
9. The flexible package of claim 1, wherein the at least one slit member includes at least one aperture extending therethrough to facilitate handling of the flexible package.
10. The flexible package of claim 1, wherein the at least one slit member is provided along at least a portion of the longitudinal edge portions and a bottom edge portion of at least one of the front and back panel portions to form a generally looped handle portion.
11. The flexible package of claim 1, wherein the at least one slit member is provided on at least a portion of the longitudinal edge portions and a top edge portion of at least one of the front and back panel portions to form a generally looped handle portion.
12. A flexible package comprising:
- at least one web material formable to define an inner cavity capable of holding material contents, wherein the at least one web material comprises:
- a front panel portion;
- a back panel portion, wherein the front and the back panel portions are joined together to define at least two generally parallel longitudinal side seals, wherein at least the front panel portion has an access opening to facilitate access to the cavity; and
- at least one slit portion being formed along at least a portion of one of the side seals to provide at least one slit member, the slit member having an anchor portion and at least one land portion such that a portion of the at least one slit member remains attached to the flexible package at the anchor portion and a portion of the at least one slit member proximate the at least one land portion is detachable from the flexible package.
13. The flexible package of claim 12, further including a bottom panel portion extending between the front and back panel portions.
14. The flexible package of claim, 13, wherein the bottom panel portion is gusseted to facilitate generally upright standing of the front and back panel portions.
15. The flexible package of claim 13, wherein the bottom panel portion and at least one of the front and back panel portions form a bottom edge portion, wherein the at least one slit member is provided with the at least two side seals and the bottom seal to define a looped handle portion.
16. The flexible package of claim 12, further including at least one re-closeable device disposed about the access opening to provide re-closeable access to the cavity.
17. The flexible package of claim 16, wherein the re-closeable device is a re-closeable zipper device.
18. The flexible package of claim 12, wherein the at least one land is a perforated region in the flexible package.
19. The flexible package of claim 12, wherein the at least one land is one member in communication with the at least one slit member and at least one of the side seals to facilitates detachment of a portion of the at least one slit member from the flexible package.
20. The flexible package of claim 12, wherein the at least one anchor portion is shaped to facilitate reinforcement of the at least one slit member to at least one of the side seals.
21. The flexible package of claim 12, further including a reinforcement member provided with the at least one anchor portion to facilitate reinforcement of the at least one slit member to at least one of the side seals.
22. The flexible package of claim 12, wherein the at least one slit member includes at least one aperture extending therethrough to facilitate handling of the flexible package.
23. The flexible package of claim 12, wherein the at least one slit member is provided on at least a portion of the two side seals and a top edge portion of at least one of the front and back panel portions to form a generally looped handle portion.
24. The flexible package of claim 12, further including at least two generally parallel side panel portions extending between the front and back panel portions.
25. The flexible package of claim 24, wherein the at least two side panel portions are gusseted.
26. A method of forming a flexible package with at least one integrated slit member member, the method comprising the steps of:
- providing a roll of flexible front panel web material to a package forming machine, wherein the front panel web material includes at least two generally parallel longitudinal edges, and at least one bottom edge disposed generally transverse to the at least two generally parallel longitudinal edges, wherein the at least two generally parallel longitudinal edges include a sealant surface portion;
- providing a roll of flexible back panel web material to a package forming machine, wherein the back panel web material includes at least two generally parallel longitudinal edge portions, and at least one bottom edge portion disposed generally transverse to the at least two generally parallel longitudinal edge portions, wherein the at least two generally parallel longitudinal edge portions include a sealant surface portion;
- feeding the flexible front and back panel web material into and through the package forming machine along a machining path into an alignment station of the package forming machine for alignment such that the sealant surface portions of the generally parallel longitudinal edge portions of the front and back panel web material are generally confronting;
- joining the at least one bottom edge portion of the front and back panel web material by feeding the front and back panel web material through at least one first seal station of the package forming machine, wherein the joined bottom edge portions defines at least one bottom seal;
- joining the generally parallel longitudinal edge portions of the front and back panel web material by feeding the front and back panel web material through at least one side seal station, wherein the joined generally parallel longitudinal edge portions define at least two side seals; and
- forming at least one slit member by feeding the front and back panel web material into a die-cut station, wherein the die-cut station perforates at least a portion of at least one of the two side seals to define the at least one slit member member, and wherein at least one anchor portion secures the at least one slit member to at least one of the front and back panels.
27. The method of claim 26, further including the steps of:
- feeding a roll of flexible bottom back panel web material into the package forming machine;
- feeding the bottom panel web material into an aligning station, wherein the bottom panel web material is aligned at an end portion of the front and back panel web material; and
- joining the bottom panel web material to the end portions of the front and back panel web material.
28. The method of claim 27, further including the step of gusseting the bottom panel web material.
29. The method of claim 26, wherein the step of providing a roll of flexible front panel web material includes providing a roll of flexible front panel web material with a generally integral re-closeable device to facilitate access to an inner cavity of the formed package.
30. The method of claim 26, wherein the step of forming at least one slit member includes perforating a portion of the two side seals to define at least two slit members.
31. The method of claim 26, further including the step of joining corresponding top edges of the front and back panel web material to define a top seal and perforating at least a portion of the top seal and at least a portion of the two side seals to define a handle portion having a general loop shape.
32. The method of claim 26, wherein the step of forming the at least one slit member further includes the step of forming at least one land region extending between the at least one slit member and the corresponding side seal.
33. The method of claim 31, further including the step of removing at least a portion of the top seal to gain access into an inner cavity of the formed package.
34. The method of claim 26, further including the step of forming an aperture in the at least one slit member to facilitate handling of the formed flexible package.
35. A flexible package capable of holding material contents, the flexible package comprising:
- a plurality of flexible web material portions including at least a front panel portion and a back panel portion defining an inner cavity, wherein each of the front and the back panel portions include generally parallel longitudinal edge portions; and
- at least one slit member provided along at least a portion of at least one of the generally parallel longitudinal edge portions and a top edge portion of at least one of the front and back panel portion, the at least one slit member defined by at least a portion of a perforated region, wherein the perforated region is removable to define a handle for the flexible package.
36. The flexible package of claim 35, further including a re-closable device being disposed to one of the plurality of web material portions to provide re-closeable access to the inner cavity.
Type: Application
Filed: Sep 29, 2004
Publication Date: Mar 31, 2005
Inventor: Mark Steele (New Prague, MN)
Application Number: 10/954,153