HIDDEN FLANGE CHILD RESISTANT CLOSURE FOR RECLOSEABLE POUCH AND METHODS
20230086117 · 2023-03-23
Inventors
Cpc classification
B65D2215/08
PERFORMING OPERATIONS; TRANSPORTING
International classification
Abstract
A recloseable zipper pouch includes a recloseable zipper with interlocking profiles. At least one of the profiles has a grasping flange with a free end positionable both above and below the interlocking profile, and an attachment flange below the interlocking profile and attached to the wall of the pouch at an anchored portion on the attachment flange. The grasping flange is unattached to the first wall between opposite sidewall edges of the pouch. The complementary interlocking profile is attached to the opposite pouch wall. Some pouches can also include an opening in a side wall of the pouch to provide access to a portion of the grasping flange.
Claims
1. A recloseable package comprising: (a) a first and second sidewall joined along respective sidewall edges, and a bottom to form a package with an open mouth bounded by terminal ends of the first and second sidewalls; and (b) a recloseable zipper closure positioned adjacent the mouth, comprising: (i) a first track comprising a first interlocking profile, an attachment flange, and a grasping flange integral with the attachment flange; (A) the grasping flange being unattached to the first sidewall between the sidewall edges; (B) the attachment flange being attached to the first sidewall at a first region extending between the sidewall edges; (C) the attachment flange being free of attachment to the first sidewall behind the first interlocking profile; and (ii) a second track comprising a second interlocking profile shaped to releasably interlock with the first interlocking profile; the second track being attached to the second sidewall; (c) wherein the grasping flange has a free end located between the terminal ends and the first interlocking profile; and wherein the grasping flange is freely movable and unattached to the first sidewall a complete distance between the sidewall edges, and unattached to the first sidewall between the free end and at least the first interlocking profile; and (d) wherein, when the first and second interlocking profiles are interlocked, a surface of the grasping flange is positioned to be opposing and movable to be directly against a surface of the attachment flange.
2. The recloseable package of claim 1 wherein the grasping flange unfolds from a first position in which the free end is located between the terminal ends and the first interlocking profile to a second position where the free end is located adjacent the terminal end of the first sidewall.
3. The recloseable package of claim 1 wherein the grasping flange is part of a same, extruded member as the attachment flange.
4. The recloseable package of claim 1 wherein the grasping flange is part of a same, co-extruded member as the attachment flange.
5. The recloseable package of claim 1 wherein: (a) the first interlocking profile comprises a stem with a head; and (b) the second interlocking profile comprises a pair of legs spaced apart to receive the head of the first track.
6. The recloseable package of claim 1 wherein the grasping flange is movable away from the attachment flange.
7. The recloseable package of claim 1 wherein the first region comprises an anchor portion on an inner surface of the attachment flange.
8. The recloseable package of claim 7 wherein the anchor portion comprises a heat seal between the attachment flange and the first sidewall.
9. The recloseable package of claim 7 wherein the anchor portion comprises an adhesive bond between the attachment flange and the first sidewall.
10. The recloseable package of claim 1 wherein the zipper closure comprises a plastic polymer material.
11. A recloseable package comprising: (a) a first and second sidewall joined along respective sidewall edges, and a bottom to form a package with an open mouth bounded by terminal ends of the first and second sidewalls; and (b) a recloseable zipper closure positioned adjacent the mouth, comprising: (i) a first track comprising a first interlocking profile, an attachment flange, and a grasping flange integral with the attachment flange; (A) the grasping flange being unattached to the first sidewall between the sidewall edges; (B) the attachment flange being attached to the first sidewall only at a first region extending between the sidewall edges, the first region being vertically spaced from the first interlocking profile; and (ii) a second track comprising a second interlocking profile shaped to releasably interlock with the first interlocking profile; the second track being attached to the second sidewall; (c) wherein the grasping flange has a free end located between the terminal ends and the first interlocking profile; and wherein the grasping flange is freely movable and unattached to the first sidewall a complete distance between the sidewall edges, and unattached to the first sidewall between the free end and at least the first interlocking profile; and (d) wherein the first track includes a fold along the complete distance between the sidewall edges such that the grasping flange is opposing and is positionable to be directly against a surface of the attachment flange when the package is in a closed condition.
12. The recloseable package of claim 11 wherein the grasping flange unfolds from a first position in which the free end is located between the terminal ends and the first interlocking profile to a second position where the free end is located adjacent the terminal end of the first sidewall.
13. The recloseable package of claim 11 wherein the grasping flange is part of a same, extruded member as the attachment flange.
14. The recloseable package of claim 11 wherein: (a) the first interlocking profile comprises a stem with a head; and (b) the second interlocking profile comprises a pair of legs spaced apart to receive the head of the first track.
15. The recloseable package of claim 11 wherein the zipper closure comprises a plastic polymer material.
16. A method of opening a zipper closure of a recloseable zipper pouch, the zipper closure having mating zipper profile members; the method comprising: (a) reaching into an interior of the pouch to grasp a free end of a first flange; (b) pulling the first flange in a direction away from an opposing second flange; the first flange and the opposing second flange each being secured to a mated zipper profile member; (c) opening the zipper closure by pulling the first flange and the opposing second flange until the mating zipper profile members are disengaged.
17. The method of claim 16 wherein the step of moving the first flange includes unfolding the first flange to move the free end of the first flange toward a position adjacent a terminal end of the mouth of the pouch.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION
A. Package Overview
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[0076] The surrounding wall 22 includes first and second sidewalls or wall panels 26, 28 in opposition to each other. First and second sidewall edges (sides) 30, 32 join the first and second sidewalls 26, 28. In some embodiments, the first and second sidewall edges 30, 32 can be seals connecting together the first and second sidewalls 26, 28, while in other embodiments, the first and second sides 30, 32 are not seals, but merely form the sides 30, 32.
[0077] The pouch 20 includes a closed bottom 34. The closed bottom 34, in this embodiment, is between the first sidewall edge 30 and second sidewall edge 32 and at an opposite end of the pouch as the reclosable zipper closure 24. The closed bottom 34 can be part of the same single piece of material that forms the first wall 26 and second wall 28; alternatively, the closed bottom 34 can be a seal connecting together the first wall 26 and second wall 28.
[0078] The pouch 20 has an open mouth 36 at the end of the pouch 20 that is opposite from the closed bottom 34. The mouth 36 is defined by terminal ends 38, 40 of the first and second walls 26, 28. The mouth 36 provides access to the interior volume 23, when the reclosable zipper closure 24 is in an unlocked/disengaged (open) position (
[0079] The pouch 20 can be made from many different materials, and is preferably made from a polymeric material, such as a clear (transparent) polymer to form a flexible plastic bag.
B. Example Zipper Closures
[0080] The reclosable zipper closure 24 in the pouch 20 is constructed to increase the difficulty for children to open the pouch 20 and gain access to contents of the interior volume 23, while still allowing easy opening for adults or senior citizens. Example embodiments are shown in
[0081] The reclosable zipper closure 24 is typically positioned adjacent the mouth 36. The zipper closure 24 includes a first track 42 having an interlocking profile in the form of a first zipper profile member 44.
[0082] The reclosable zipper closure 24 further includes a second track 46. The second track 46 has a complementary interlocking profile in the form of a second zipper profile member 48. The first profile member 44 and the second profile member 48 are constructed and arranged to selectively interlock when pressed together and unlock (see
[0083] The first zipper profile member 44 and the second zipper profile member 48 have complementary shapes such that they will interlock or engage with each other in the form of a “press to fit” closure. While many different embodiments for such interlocking profiles are possible, in the example embodiment shown herein, the first zipper profile member 44 is in the form of a stem 52 having a head 54. The second zipper profile member 48 is in the form of a pair of legs 56, 57 with an opening therebetween. To engage the first zipper profile member 44 with the second zipper profile member 48, the head 54 is pushed between the legs 56, 57, which then hold the head 54 in place as the legs 56, 57 tuck under the head 54 and at the stem 52. Many different embodiments are possible.
[0084] The first track 42 further includes a first flange 60. As will be apparent from the description that follows, the first flange 60 operates as a grasping flange 61 because, in use to open the zipper closure 24, it is grasped. The first flange 60 has a free end 74 that is positionable both above the first profile member 44 and below the first profile member 44. By the term “above”, it is meant that the free end 74 of the first flange 60 is positioned between the terminal ends 38, 40 defining the mouth 36 and the first zipper profile member 44.
[0085] The first track 42 further includes an attachment flange 64. The attachment flange 64 has an outer surface 68 facing the interior volume 23 of the pouch 20 and an opposite inner surface 66 facing the first side wall 26.
[0086] The first zipper profile member 46 projects from the outer surface 68 of the attachment flange 64. In many embodiments, the first zipper profile member 46 is a same extruded piece of material as the attachment flange 64.
[0087] The attachment flange 64 is secured to the first sidewall 26 only along an anchor portion 70. The anchor portion 70 will typically be located on the inner surface 66 of the attachment flange 64. The attachment flange 64 is free of attachment to the first wall panel 26 at a region behind the first zipper profile member 44. By the term “behind,” it is meant the region of the attachment flange 64 that is in axial alignment with a longitudinal axis 75 (
[0088] The attachment flange 64 includes a profile member end 102 and an opposite wall panel end 104. The first zipper profile member 44 extends from the attachment flange 64 adjacent the profile member end 102. The attachment flange 64 is secured to the first wall panel 26 at the wall panel end 104 at the anchored portion 70. The anchored portion 70 extends along a length of less than half of the attachment flange 64 from the wall panel end 104 toward the profile member end 102. Many other variations are possible.
[0089] The second zipper profile member 48 is secured to the second wall panel 28 and extends toward the first wall panel 26 in a location to engage the first profile member 44. The second zipper profile member 48 can be part of a second flange 62, which is secured to the second wall panel 28 with a heat seal or adhesive.
[0090] The grasping flange 61 is integral with the attachment flange 64. By “integral with”, it is meant that the grasping flange 61 is either the same, extruded or co-extruded piece of material as the attachment flange 64, or it is a separate piece of material that is permanently secured, attached, or fixed to the attachment flange 64. Various techniques for making the grasping flange 61 and attachment flange 64 are described in Section C, below.
[0091] As mentioned above, the grasping flange 61 has free end 74, which is unattached or free of any connection with the first side wall 26 between the sidewall edges 30, 32. In embodiments in which the grasping flange 61 is a separate piece of material that is secured to the attachment flange 64, the grasping flange 61 is completely unattached and free of connection with the first side wall 26, between the sidewall edges 30, 32. In preferred embodiments, the grasping flange 61 is secured at the sidewall edges 30, 32, and at those locations, the grasping flange 61 is attached to both the first side wall 26 and second side wall 28.
[0092] The grasping flange 61 has a first surface 50 and an opposite second surface 51. The free end 74 is at a terminal end of the grasping flange 61 between the first surface 50 and second surface 51.
[0093] In embodiments (i.e.,
[0094] The grasping flange 61 is “adjustable.” By the term “adjustable,” it is meant that the grasping flange 61 is movable between a hidden position (
[0095] In the closure-opening position, the first surface 50 of the grasping flange 61 is pulled away from the inner surface 66 of the attachment flange 64. In some embodiments (
[0096] In
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[0098] When the materials of the first track 42 and second track 46 are made from a plastic polymer material, typically the anchored portion 70 between the attachment flange 64 and the bag side wall 26 is provided by either a heat seal, or an adhesive bond. Similarly, in embodiments (i.e.,
[0099] In embodiments (i.e.,
[0100] In the embodiment shown in
[0101] In the configuration of
[0102] Still in reference to
[0103] In the embodiment of
[0104] In reference now to the embodiment of
[0105] In particular, and still in reference to
[0106] The second grasping flange 87 is integral with the second attachment flange 90 and is positionable between the second attachment flange 90 and the second wall panel 28. In this embodiment, the second grasping flange 87 is shown a part of a same extruded member as the attachment flange 90. The second grasping flange 87 has a free end 100, a first surface 97, and an opposite second surface 98. The second grasping flange 87 is free of attachment to the second side wall 28 between the sidewall edges 30, 32. In preferred embodiments, the second grasping flange 87 is secured at the sidewall edges 30, 32, and at those locations, the second grasping flange 87 is attached to both the first side wall 26 and second side wall 28.
[0107] The second grasping flange 87 is adjustable between a hidden position and a closure-opening position. The hidden position is shown in
[0108] In the closure-opening position, the first surface 97 of the second grasping flange 87 is pulled away from the inner surface 92 of the second attachment flange 90. In the embodiment shown in
[0109] In other embodiments, the second grasping flange 87 can be a separate piece of material that is secured, attached, or fixed to the attachment flange 90 at a fixed portion secured to the inner surface 92 of the second attachment flange 90, such as shown in
[0110] It should also be appreciated that the inclusion of second attachment flange 90 and second grasping flange 87 can be incorporated into the embodiment of
[0111] The above arrangements can be used in a method of opening a zipper closure of a reclosable zipper pouch, such as the zipper closure 24 of reclosable zipper pouch 20. The method includes, first, reaching into the interior 23 of the pouch 20 to grasp first flange 60. The first flange 60 can be in the form of grasping flange 61. The step can include moving the first flange 60 toward the mouth 36 of the pouch 20.
[0112] The method can further include pulling the first flange 60 in a direction away from an opposing second flange 62. The first flange 60 and the opposing second flange 62 are each secured to a mated zipper profile member 44, 48, respectively.
[0113] The method can also include opening the zipper closure 24 by pulling the first flange 60 and the second flange 62 until the mating zipper profile members 44, 48 are disengaged.
[0114] The step of moving the first flange 60 includes unfolding the first flange 60 to move a free end 74 of the first flange 60 toward a position adjacent terminal ends 38, 40 defining the mouth 36 of the pouch 20.
[0115] The method may further include a step of reaching into the interior 23 of the pouch 20 to grasp a second grasping flange 87 and then moving the second grasping flange 87 toward the mouth 36.
[0116] The step of moving the second grasping flange 87 can include unfolding the grasping flange 87 to move a free end 100 of the second grasping flange 87 toward a position adjacent the terminal ends 38, 40 of the mouth 36 of the pouch 20.
C. Example Methods for Making the Grasping Flange and Attachment Flange
[0117] For any of the above embodiments, there are a variety of ways of attaching the grasping flange 61 to the remaining portion of the zipper profile, such as the attachment flange 64. These methods also apply to the grasping flange 87 and the attachment flange 90.
[0118] One method includes extruding the grasping flange as part of the zipper track 42, so that the extruded web includes: the attachment flange 64, the profile member 44, and the grasping flange 87. After extrusion, the grasping flange 87 is folded over.
[0119] Another method includes extruding the grasping flange as part of the zipper track 42, so that the extruded web includes: the attachment flange 64, the profile member 44, and the grasping flange 87, but in this case, the grasping flange 87 is extruded at an angle toward the attachment flange anchor portion 70. Because the grasping flange 87 is extruded at the angle, there is no need to fold the grasping flange.
[0120] Another method includes co-extruding the grasping flange with the rest of the zipper track 42. The extruded web includes: the attachment flange 64 and the profile member 44, while the grasping flange 87 is co-extruded at an angle toward the attachment flange anchor portion 70.
[0121] Another method includes making the grasping flange 87 as a separate piece from the rest of the zipper track 42 (attachment flange 64 and profile member 44) and then heat sealing the grasping flange 87 to the attachment flange 64 at an angle toward the attachment flange anchor portion 70.
[0122] Another method includes making the grasping flange 87 as a separate piece from the rest of the zipper track 42 (attachment flange 64 and profile member 44) and then adhesively bonding the grasping flange 87 to the attachment flange 64 at an angle toward the attachment flange anchor portion 70.
D. The Embodiments of FIGS. 13-19
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[0124] The package 20 of
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[0127] In the example shown in
[0128] The opening 122 is spaced from the sidewall edges 30, 32. The opening 122 can be positioned anywhere between the side edges 30, 32. In the example shown in
[0129] The opening 122 can be embodied in many different ways. For example, the opening 122 can be in the form of a slit 124 (
[0130] The opening 122 can also be in the form of a perforation 126 (
[0131] In the embodiment of
[0132] The tab 130 can include various shapes including rectangular (
[0133] In the example shown in
[0134] The arch-shaped tab 130 could also be oriented in the direction shown in
[0135] In the embodiment of
[0136] The opening 122 can also be used in embodiments that have second grasping flange 87 as shown in
[0137] The embodiments of
[0138] The step of reaching into the interior 23 of the pouch 120 may include inserting one or more fingers through the opening 122 in the first side wall 26 of the pouch 120 to grasp the first flange 60, which can be in the form of the grasping flange 61.
[0139] When the opening 122 is in the form of perforations 126, the method can include breaking one or more of the perforations 126 in the first side wall 26 to create a size in the opening 122 to allow insertion of one or more fingers through the opening 122.
[0140] In embodiments in which the package 120 includes tab 130, the step of inserting one or more fingers can include inserting the one or more fingers under the tab 130 in the first side wall 26, such that the fingers enter the gap 132 and penetrate the opening 122 in order to access the grasping flange 61.
[0141] The above description represents example principles of this disclosure. Many embodiments can be made applying these principles.