Hidden flange child resistant closure for recloseable pouch and methods
11530076 · 2022-12-20
Assignee
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; and (b) a recloseable zipper closure positioned adjacent the mouth, comprising: (i) a first track comprising an interlocking profile, the first track further comprising a grasping flange having a free end positionable both above and below the interlocking profile; and an attachment flange being below the interlocking profile, the first track attached to the first sidewall at an anchored portion on the attachment flange; the grasping flange being unattached to the first sidewall between the sidewall edges; and (ii) a second track comprising a complementary interlocking profile, the second track attached to the second sidewall; wherein the grasping flange is freely movable and unattached to the first sidewall a complete distance between the sidewall edges; and wherein when the package is in a closed condition with the interlocking profiles mated, a surface of the grasping flange opposes a surface of the attachment flange.
2. The recloseable package of claim 1 wherein the first sidewall defines an opening sized to provide access to a portion of the grasping flange by one or more fingers from a position outside of the package, and the second sidewall is free of openings.
3. The recloseable package of claim 2 wherein the opening is located in the first sidewall spaced from the sidewall edges and adjacent to the first track.
4. The recloseable package of claim 2 wherein the opening is located less than 3 mm from the grasping flange.
5. The recloseable package of claim 2 wherein the opening comprises one of a slit, perforation, or gap in the first sidewall.
6. The recloseable package of claim 2 wherein the first sidewall includes a tab extending from a remaining portion of the first sidewall, and a gap is between the tab and the remaining portion of the first sidewall in communication with the opening.
7. The recloseable package of claim 6 wherein the tab is arch-shaped.
8. The recloseable package of claim 7 wherein a peak of the arch-shaped tab is closer to the open mouth than ends of the arch-shaped tab.
9. The recloseable package of claim 7 wherein ends of the arch-shaped tab are closer to the open mouth than a peak of the arch-shaped tab.
10. The recloseable package of claim 6 wherein the tab extends a distance of greater than 50% along the zipper closure between the sidewall edges.
11. A recloseable zipper pouch comprising: (a) a surrounding wall having a closed bottom, first and second opposite sides, and first and second opposing wall panels between the first and second opposite sides, and an open mouth defined by terminal ends of the first and second opposing wall panels; the surrounding wall defining an interior volume therein; (b) a recloseable zipper closure between the terminal ends and the closed bottom; the zipper closure providing selective access to the interior volume through the mouth; the zipper closure including: an attachment flange having an inner surface and an outer surface; (ii) a first zipper profile member extending from the outer surface of the attachment flange and extending toward the second wall panel; the attachment flange being secured to the first wall panel along only an anchored portion of the inner surface and being free of attachment to the first wall panel at a region behind the first zipper profile member; (ii) a second zipper profile member secured to the second wall panel and extending toward the first wall panel and in a location to engage the first profile member; (iii) the first and second profile members being constructed and arranged to selectively interlock when pressed together and unlock when forced apart; and (c) an adjustable grasping flange integral with the attachment flange and being positionable between the attachment flange and the first wall panel; the grasping flange having a free end, a first surface, and an opposite second surface; (ii) the grasping flange being adjustable between a hidden position and a closure-opening position; (A) the hidden position including the free end being located between the attachment flange anchored portion and the first zipper profile member, and the first surface being adjacent the inner surface of the attachment flange; and (B) the closure-opening position including the first surface of the grasping flange pulled away from the inner surface of the attachment flange; wherein the grasping flange is freely movable and free of attachment to the first wall panel at the region behind the first zipper profile member for a complete distance between the first and second opposite sides of the surrounding wall; and wherein when the package is in a closed condition with the first and second profile members interlocked, the first surface of the grasping flange opposes the inner surface of the attachment flange.
12. The recloseable zipper pouch of claim 11 wherein the first wall panel defines an opening sized to provide access to a portion of the grasping flange by one or more fingers from a position outside of the zipper pouch, and the second wall is free of openings.
13. The recloseable zipper pouch of claim 12 wherein the opening is located in the first wall panel spaced from the first side and second side and adjacent to the first zipper profile.
14. The recloseable zipper pouch of claim 12 wherein the opening is located less than 3 mm from the grasping flange.
15. The recloseable zipper pouch of claim 12 wherein the opening comprises one of a slit, perforation, or gap in the first wall panel.
16. The recloseable zipper pouch of claim 12 wherein the first wall panel includes a tab extending from a remaining portion of the first wall panel, and a gap in communication with the opening is between the tab and the remaining portion of the first wall panel.
17. The recloseable zipper pouch of claim 16 wherein the tab is arch-shaped.
18. The recloseable zipper pouch of claim 17 wherein a peak of the arch-shaped tab is closer to the open mouth than terminal ends of the arch-shaped tab.
19. The recloseable zipper pouch of claim 17 wherein terminal ends of the arch-shaped tab are closer to the open mouth than a peak of the arch-shaped tab.
20. The recloseable zipper pouch of claim 16 wherein the tab extends a distance of greater than 50% along the zipper closure between the first side and second side of first wall panel.
21. The recloseable package of claim 2 wherein the opening is directly over in covering relation to the grasping flange.
22. The recloseable zipper pouch of claim 12 wherein the opening is directly over in covering relation to the grasping flange.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION
(20) A. Package Overview
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(22) 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.
(23) 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.
(24) 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 (
(25) 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.
(26) B. Example Zipper Closures
(27) 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
(28) 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.
(29) 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
(30) 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.
(31) 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.
(32) 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.
(33) 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.
(34) 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 (
(35) 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.
(36) 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.
(37) 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.
(38) 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.
(39) 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.
(40) In embodiments (i.e.,
(41) The grasping flange 61 is “adjustable.” By the term “adjustable,” it is meant that the grasping flange 61 is movable between a hidden position (
(42) 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 (
(43) In
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(45) 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.,
(46) In embodiments (i.e.,
(47) In the embodiment shown in
(48) In the configuration of
(49) Still in reference to
(50) In the embodiment of
(51) In reference now to the embodiment of
(52) In particular, and still in reference to
(53) 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.
(54) The second grasping flange 87 is adjustable between a hidden position and a closure-opening position. The hidden position is shown in
(55) 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
(56) 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
(57) 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
(58) 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.
(59) 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.
(60) 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.
(61) 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.
(62) 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.
(63) 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.
(64) C. Example Methods for Making the Grasping Flange and Attachment Flange
(65) 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.
(66) 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.
(67) 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.
(68) 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.
(69) 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.
(70) 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.
(71) D. The Embodiments of
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(73) The package 20 of
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(76) In the example shown in
(77) 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
(78) The opening 122 can be embodied in many different ways. For example, the opening 122 can be in the form of a slit 124 (
(79) The opening 122 can also be in the form of a perforation 126 (
(80) In the embodiment of
(81) The tab 130 can include various shapes including rectangular (
(82) In the example shown in
(83) The arch-shaped tab 130 could also be oriented in the direction shown in
(84) In the embodiment of
(85) The opening 122 can also be used in embodiments that have second grasping flange 87 as shown in
(86) The embodiments of
(87) 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.
(88) 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.
(89) 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.
(90) The above description represents example principles of this disclosure. Many embodiments can be made applying these principles.