US20050271308A1 - Closure device for a reclosable pouch - Google Patents
Closure device for a reclosable pouch Download PDFInfo
- Publication number
- US20050271308A1 US20050271308A1 US10/875,391 US87539104A US2005271308A1 US 20050271308 A1 US20050271308 A1 US 20050271308A1 US 87539104 A US87539104 A US 87539104A US 2005271308 A1 US2005271308 A1 US 2005271308A1
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- US
- United States
- Prior art keywords
- closure
- female
- male
- profile
- pouch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
- B65D33/2541—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
- B65D33/2541—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
- B65D33/255—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape being provided with special visual, audible or tactile indicating means, e.g. indicating proper engagement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
- B65D33/2566—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor using two or more independently operable slide fasteners
Abstract
A reclosable pouch comprises a body portion having first and second pouch walls. A first closure mechanism is disposed on internal sides of the first and second walls. The first closure mechanism includes a first female profile having first and second spaced legs and a first male profile. A second closure mechanism is disposed on the internal sides of the first and second pouch walls. The second closure mechanism includes a second female profile having third and fourth spaced legs and a second male profile. One of the first, second, third, or fourth spaced legs is longer than the other leg of the same female profile. Further, the first and second closure mechanisms comprise differing opening and closing characteristics.
Description
- The present application is a continuation-in-part of U.S. patent application Ser. No. 10/861,674 filed on Jun. 4, 2004.
- Not applicable
- Not applicable
- 1. Field of the Invention
- The present invention relates to closures for reclosable pouches, and more particularly, to such closures that include two closure mechanisms comprised of male and female closure elements.
- 2. Description of the Background of the Invention
- A thermoplastic pouch for the storage of items typically includes a closure mechanism comprising multiple profiles disposed on opposed inner surfaces of pouch walls. In a specific example, two sets of profiles are disposed on pouch walls wherein each set includes a male and a female closure element.
- Ausnit U.S. Pat. No. 3,656,147 discloses a plastic bag having male and female resealable interlocking elements integrally attached thereto for selectively opening and closing an end of the bag. The bag further includes a pair of stiffener ribs formed integrally with the bag and disposed below the resealable elements to provide increased rigidity along an open end of the bag to prevent inadvertent separation of the elements.
- Ausnit U.S. Pat. No. 4,787,880 discloses a bag having first and second zipper strip bases secured to opposing wall panels of the bag. The bases each include at least two arrow-shaped profiles extending therefrom to engage with the profiles of the opposing base, wherein the profiles of the same base are adjacent one another.
- Ausnit U.S. Pat. No. 4,792,240 discloses a bag having a reclosable zipper including first and second base members each having a plurality of interlocking zipper profile parts extending therefrom. The bottom-most profile part has a head having a greater mass than the head of the other profile parts to resist opening of the zipper due to internal pressures.
- Johnson U.S. Pat. No. 6,138,329 discloses a reclosable bag having an assembly that includes first and second male arrow-shaped profiles extending perpendicularly from a first base. The assembly further includes first and second female U-shaped members extending perpendicularly from a second base to engage the first and second male profiles, respectively. Each of the male arrow-shaped profiles includes two prongs extending therefrom that engage with a female profile. The prongs of the second male profile are longer than the prongs of the first male profile to increase the opening force of the second male profile when interlocked with a respective female profile.
- Malin U.S. Pat. No. 6,167,597 discloses a zipper strip for a reclosable package, wherein the zipper strip includes a male and a female profile. There are at least two male interlocking members that extend from a base toward the opposite female interlocking members, wherein each male member has an asymmetrical arrow shape so that the zipper is easier to open from one side than the other. One or both of the profiles includes at least one high compression member that extends from a base thereof to touch a base of the opposite profile to allow the profiles to be sealed without crushing or distorting the interlocking members.
- Linton U.S. Pat. No. 6,691,383 discloses a webless zipper for a reclosable bag including interlocking male and female profiles. The male profile includes three ribs, wherein each of two of the ribs includes double-barbed end sections at the end of a shaft. The barbs of each end section are asymmetrical with a longer barb facing a product side of the bag to increase the opening force for the product side of the bag. The female profile includes two grooves, defined by legs that interlock with the double-barbed end sections.
- According to one embodiment of the present invention, a reclosable pouch comprises a body portion having first and second pouch walls. A first closure mechanism is disposed on internal sides of the first and second pouch walls. The first closure mechanism includes a first female profile with first and second spaced legs. The first and second spaced legs have first and second female hook portions disposed on a distal end thereof, respectively. The first closure mechanism also includes a first male profile. A second closure mechanism is disposed on the internal sides of the first and second pouch walls. The second closure mechanism includes a second female profile with third and fourth spaced legs. The third and fourth spaced legs have third and fourth female hook portions disposed on a distal end thereof, respectively. The second closure mechanism also includes a second male profile. One of the first, second, third, or fourth female hook portions is thinner than the other female hook portion of the same female profile.
- Other aspects and advantages of the present invention will become apparent upon consideration of the following detailed description and the attached drawings, in which like elements are assigned like reference numerals.
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FIG. 1 is an elevational view of a first embodiment of a reclosable thermoplastic storage bag according to the present invention; -
FIG. 2 is an enlarged, fragmentary, sectional view taken generally along the lines 2-2 ofFIG. 1 depicting a first embodiment of a closure mechanism of the present invention; -
FIGS. 2A and 2B are enlarged fragmentary views ofFIG. 2 ; -
FIGS. 3-12 are views similar toFIG. 2 illustrating alternative closure mechanisms of the present invention; and -
FIG. 13 is an enlarged fragmentary view ofFIG. 12 . - Referring to
FIGS. 1 and 2 , a reclosable bag in the form of athermoplastic storage pouch 20 comprises first andsecond body portions second pouch walls second pouch walls second side portions bottom portion 34. An opening 35 is disposed at atop portion 36 of thepouch 20. First andsecond closure mechanisms lips 40 are also disposed at thetop portion 36 of thepouch 20. Thefirst closure mechanism 38 a is disposed between thesecond closure mechanism 38 b and anupper edge 42 of thetop portion 36. - Referring to
FIG. 2 , male and female closure elements orportions first closure mechanism 38 a are disposed on opposing internal sides orsurfaces second pouch walls portions second closure mechanism 38 b are disposed on the internal sides orsurfaces first closure mechanism 38 a is parallel to thesecond closure mechanism 38 b and the two are spaced from one another by a distance that is sufficiently small to create the perception that mechanisms act as a single closure. In addition, themechanisms mechanisms - Preferably, the closure elements or portions 44, 50 have a cross sectional shape and/or may be formed in accordance with the teachings of U.S. patent application Ser. No. 10/821,341, filed Apr. 9, 2004 (the application is entitled “Closure Device for a Reclosable Pouch,” and was filed with an attorney docket No. 29252/3676A), owned by the assignee of the present application and the disclosure of which is hereby incorporated by reference herein. Also preferably, the
first closure mechanism 38 a exhibits a first closure characteristic and thesecond closure mechanism 38 b exhibits a second closure characteristic different than the first closure characteristic. For example, either or both of the first and second closure mechanisms 38 may exhibit a relatively low level of resistance to pouch opening forces but provide a high level of deformation so as to exhibit a clicking feel and/or sound when the pouch is opened or closed. In addition, either or both of the first and second closure mechanisms 38 may exhibit a low level of deformation but provide a relatively high overall resistance to pouch opening forces. Further, either or both of themale closure elements female closure elements - The first
female closure element 44 b ofFIG. 2 is substantially symmetric about acenterline 52. The firstfemale closure element 44 b comprises a C-shaped profile and includes a base 54 b with a first spacedleg 56 and a second spacedleg 58 extending therefrom. The firstmale closure element 44 a is substantially asymmetric about thecenterline 52. The firstmale closure element 44 a includes a base 54 a with abody 60 extending therefrom. Anengagement member 62 is disposed on an end of thebody 60, wherein theengagement member 62 has afirst hook portion 64 extending therefrom. The firstfemale closure element 44 b is adapted to receive the firstmale closure element 44 a when pressure is exerted on the closure elements by a user's finger(s) during closing of the pouch. In one embodiment, the secondfemale closure element 50 b is substantially symmetric about acenterline 66. The secondfemale closure element 50 b also has a C-shaped profile and includes a base 68 b with third and fourth spacedlegs female closure element 50 b is also adapted to receive the secondmale closure element 50 a when pressure is exerted on the closure elements by a user's finger(s) during closing of the pouch. The secondmale closure element 50 a includes a base 68 a with abody 74 extending therefrom. Anengagement member 76 is disposed on an end of thebody 74, wherein theengagement member 76 has asecond hook portion 78 extending therefrom. - As may be seen in
FIG. 2 , the firstmale closure element 44 a of thefirst closure mechanism 38 a is adjacent the secondfemale closure element 50 b of thesecond closure mechanism 38 b on thefirst pouch wall 26. The firstmale closure element 44 a is disposed closer to anupper edge 42 of the pouch on thefirst pouch wall 26 than the secondfemale closure element 50 b. Additionally, the firstfemale closure element 44 b of thefirst closure mechanism 38 a is adjacent the secondmale closure element 50 a of thesecond closure mechanism 38 b on thesecond pouch wall 28. The firstfemale closure element 44 b is also disposed closer to anupper edge 42 of the pouch on thesecond pouch wall 28 than the secondmale closure element 50 a. In other embodiments, the firstfemale closure element 44 b and the secondmale closure element 50 a are disposed on thepouch wall 26 and the firstmale closure element 44 a and the secondfemale closure element 50 b are disposed on thepouch wall 28. In still another embodiment, the first and secondmale closure elements second pouch walls female closure elements second pouch walls - The
first closure mechanism 38 a is opened by disengaging theclosure elements second closure mechanism 38 b is opened by disengaging theclosure elements male closure element 44 a disengages from the firstfemale closure element 44 b with a first external opening force and the secondmale closure element 50 a disengages from the secondfemale closure element 50 b with a second external opening force. The first and second external forces are exerted from a side of the pouch nearer theupper edge 42, as opposed to internal bursting forces that act on theclosure mechanisms male closure element 44 a disengages from the firstfemale closure element 44 b with a first internal opening force and the secondmale closure element 50 a disengages from the secondfemale closure element 50 b with a second internal opening force. The first and second internal opening forces are exerted from a side of the pouch nearer the content side of thepouch 20 and typically comprise bursting forces. Preferably, the first external and internal opening forces of thefirst closure mechanism 38 a are different from each other and the second external and internal opening forces of thesecond closure mechanism 38 b are different from each other. - The embodiment depicted in
FIG. 2 includes thesecond hook portion 78 extending from theengagement member 76 toward thebottom portion 34 of thepouch 20. By not providing a similar hook portion on the opposite side of theengagement member 76 that is directed toward the opposingupper edge 42 of thepouch 20, differing internal and external opening forces can be established. The elimination of an extra hook portion on the opposing side (toward the upper edge 42) of theengagement member 76 allows for the secondfemale closure element 50 b to flex less around the secondmale closure element 50 a during opening of thepouch 20. The result of the reduced flexing in thesecond closure mechanism 38 b is a lower external opening force than exhibited by thefirst closure mechanism 38 a. Conversely, the firstmale closure element 44 a includes afirst hook portion 64 extending from theengagement member 62 toward theupper edge 42 of thepouch 20. The elimination of an extra hook portion on the opposing side (toward the bottom portion 34) of theengagement member 62 allows for the firstfemale closure element 44 b to flex less around the firstmale closure element 44 a when thepouch 20 is opened from an internal side of thepouch 20. The result of the reduced flexing in thefirst closure mechanism 38 a is a lower internal opening force than exhibited by thesecond closure mechanism 38 b. - The provision of a single hook portion on either of the first or second
male closure elements second closure mechanisms closure mechanisms female closure elements male closure elements male closure elements second hook portions second closure mechanisms male closure elements - The force required to open a closure mechanism utilizing an asymmetric male closure element may be adjusted by varying the thickness of the male closure element. As may be seen in
FIG. 2A , the firstmale closure element 44 a has a thickness A at a portion of thebody 60 and a thickness B at the widest part of thehook portion 64. In one embodiment, the thicknesses A and B are substantially equal. Alternatively, the thickness B can be increased, thereby increasing the external opening force developed by theclosure mechanism 38 a. In some embodiments that utilize multiple asymmetric male closure elements, all of the male closure elements have similar thicknesses and opening forces. In other embodiments, each respective male closure element may have its own unique thickness and opening force requirements. - The force required to close a closure mechanism utilizing an asymmetric male closure element may also be adjusted by varying the thickness of the male closure element. As may be seen in
FIG. 2B , themale closure element 44 a includes a thickness C that extends from a tip of thefirst hook portion 64 to a back side of thefirst hook portion 64. By decreasing the thickness C relative to the rest of themale closure element 44 a, the closing force developed by thefirst closure mechanism 38 a is decreased. Similarly, increasing the thickness C increases the closing force developed by thefirst closure mechanism 38 a. In some embodiments that utilize multiple asymmetric male closure elements, all of the male closure elements have similar or identical thicknesses and closing forces. In other embodiments, each respective male closure element may have its own unique thickness and closing force requirements. - In other embodiments of the present invention, additional symmetric or asymmetric closure mechanisms may be provided. While it is possible to combine any number of symmetric or asymmetric closure mechanisms within the
pouch 20, it is preferred that only a third and a fourthadditional closure mechanism FIG. 3 , the firstmale closure element 44 a is asymmetric. Thefirst hook portion 64 extends from theengagement member 62 toward theupper edge 42 of thepouch 20. Disposed beneath thefirst closure mechanism 38 a are second, third, andfourth closure mechanisms fourth closure mechanisms male closure elements fourth hook portions engagement members male closure elements engagement members bodies bases fourth hook portions bottom portion 34 of thepouch 20 in a direction opposite that of the firstmale closure element 44 a. Additionally, the first, second, third, and fourthmale closure elements female closure elements female closure element 44 b includes first and second spacedlegs legs legs legs - In another embodiment depicted in
FIG. 4 , afirst closure mechanism 138 a includes a symmetric firstmale closure element 140 a. The firstmale closure element 140 a includes anengagement member 142 having twohook portions engagement member 142 is disposed on an end of abody 145, wherein the body is further connected to a base 146 a. A firstfemale closure element 140 b is also provided and includes a base 146 b with a first spacedleg 148 and a second spacedleg 150 extending therefrom. The firstfemale closure element 140 b is adapted to receive the firstmale closure element 140 a when pressure is exerted on the closure elements by a user's finger(s) during closing of thepouch 20. Similar to the prior embodiment, second, third, andfourth closure mechanisms male closure elements male closure elements male closure element 140 a and comprisesingle hook portions engagement members male closure elements female closure elements female closure elements - In yet another embodiment depicted in
FIG. 5 , afirst closure mechanism 238 a is located adjacent theupper edge 42 of thepouch 20 and includes an asymmetric firstmale closure element 240 a. The firstmale closure element 240 a includes theengagement member 62, wherein thefirst hook portion 64 extends from theengagement member 64 toward theupper edge 42 of thepouch 20. Asecond closure mechanism 238 b is disposed below thefirst closure mechanism 238 a and closer to abottom portion 34 of thepouch 20. Thesecond closure mechanism 238 b includes an asymmetric secondmale closure element 242 a, wherein thesecond hook portion 78 extends from theengagement member 76 toward thebottom portion 34 of thepouch 20. Athird closure mechanism 238 c is disposed between thefirst closure mechanism 238 a and thesecond closure mechanism 238 b. Thethird closure mechanism 238 c includes a secondmale closure element 244 a, wherein the secondmale closure element 244 a comprises anengagement member 246 having twohook portions male closure elements female closure elements - The provision of symmetric male closure elements provides for different closer characteristics than the asymmetric male closure elements. Specifically, closure mechanisms utilizing symmetric male closure elements can be formed to exhibit a high degree of deformation so as to develop a clicking feel when the pouch is opened or closed. Preferably, the closure mechanisms are produced in accordance with the teachings of Dais et al., U.S. Pat. No. 5,140,727, owned by the assignee of the present application and the disclosure of which is hereby incorporated herein.
- In some embodiments, a
channel 300 may be provided for guiding the user's fingers during closure of thepouch 20. Thechannel 300 may be formed by bending or curving thepouch walls pouch 20. In a different embodiment, the size of at least one of the closure mechanisms of any of the embodiments described herein may be selected to be smaller than adjacent closure mechanisms. For example,FIG. 6 , which is similar to the embodiment depicted inFIG. 5 , shows thethird closure mechanism 238 c being smaller than the first andsecond closure mechanisms third closure mechanism 238 c, which is disposed between the first andsecond closure mechanisms channel 300 for guiding the user's fingers. It is also envisioned that the first andsecond closure mechanisms - As should be evident, differing closure mechanisms may be constructed to close with differing closing forces. For example, the first
male closure element 140 a ofFIG. 4 engages with the firstfemale closure element 140 b with a first closing force, the secondmale closure element 152 a engages with the secondfemale closure element 152 b with a second closing force, the thirdmale closure element 154 a engages with the thirdfemale closure element 154 b with a third closing force, and the fourthmale closure element 156 a engages with the fourthfemale closure element 156 b with a fourth closing force. In one embodiment, the first closing force is greater than the second, third, or fourth closing forces. In another embodiment, the second, third, and fourth closing forces are greater than the first closing force. Still further, other embodiments have first, second, third, and fourth closing forces that are approximately equal. Additionally, the second, third, and fourth closing forces may also be different from each other. The spacing, thickness, and type of material used for the male and female closure elements are a few of the characteristics that that can be adjusted to provide for differing closing force requirements. For example, a zipper at a 64 mil thickness (1.6 mm) was found to have an average closing force of 0.15 lb. (0.07 kg.) for thefirst closure mechanism 138 a and an average closing force of 0.05 lb. (0.02 kg.) for thesecond closure mechanism 138 b. When the zipper thickness was increased to 75 mils (1.9 mm) an average closing force for thefirst closure mechanism 138 a was found to be 0.18 lb. (0.08 kg.), an average closing force for thesecond closure mechanism 138 b was found to be 0.09 lb. (0.04 kg.). - In a further embodiment, a closure mechanism may comprise male and female closure elements that are both asymmetrical.
FIG. 7 shows a zipper profile that is similar toFIG. 2 , wherein first andsecond closure mechanisms second pouch walls male closure element 440 a and a firstfemale closure element 440 b. The firstmale closure element 440 a comprises an asymmetrical male profile similar to those described above. The firstmale closure element 440 a includes thebody 60 extending from the base 54 a, wherein theengagement member 62 is disposed on the end of thebody 60. Thefirst hook portion 64 extends from theengagement member 62 toward theupper edge 42 of thepouch 20. The firstfemale closure element 440 b comprises a symmetrical C-shaped profile with first and second spacedlegs second legs second closure mechanism 438 b includes a secondmale closure element 442 a that is similar to the firstmale closure element 440 a. The secondmale closure element 442 a includes thebody 74 extending from the base 68 a, wherein theengagement member 76 is disposed on the end of thebody 74. Thesecond hook portion 78 extends from theengagement member 76 toward thebottom portion 34 of thepouch 20 in the opposite direction of thefirst hook portion 64. The secondfemale closure element 442 b comprises an asymmetrical C-shaped profile that includes third and fourth spacedlegs third leg 444 is disposed closer to theupper edge 42 than thefourth leg 446. In a one embodiment, thethird leg 444 is longer than the first, second, andfourth legs third leg 444 increases the resistance of thesecond closure mechanism 438 b to internal opening forces. - The first and second
male closure elements third leg 444 ofFIG. 7 , the opening forces of the closure mechanisms may be increased. For example, the longerthird leg 444 of thesecond closure mechanism 438 b forces the secondfemale closure element 442 b to flex more during internal opening of thepouch 20 than does the firstfemale closure element 440 b. Similar to the other embodiments discussed above, the first and secondmale closure elements female closure elements second pouch walls upper edge 42 of the pouch as desired. It is also envisioned that additional closure mechanisms may be provided with at least one of the closure mechanisms utilizing a longer spaced leg. - The longer spaced
leg 444 ofFIG. 7 comprises anextension 450. Theextension 450 extends from the base 68 b that is attached to theinternal side 46 of thefirst pouch wall 26 toward theinternal side 48 of thesecond pouch wall 28. Theextension 450 includes aproximal portion 452 adjacent the base 68 b and adistal portion 454 that abuts the base 68 a of the secondmale closure element 442 b and/or aproximal portion 456 of thebody 74 when the male andfemale closure elements distal portion 454 of theextension 450 creates acontact point 458 against the base 68 a and/or theproximal portion 456 of thebody 74.FIG. 8 shows another embodiment of the present invention similar to the embodiment ofFIG. 7 . Instead of anextension 450, the third spacedleg 444 includes awedge portion 460. Thewedge portion 460 extends from the base 68 b toward thesecond pouch wall 28. The wedge portion includes aproximal portion 462, amedial portion 464 and adistal portion 466. Theproximal portion 462 of thewedge portion 460 is adjacent the base 68 b, while thedistal portion 466 is closest to thesecond pouch wall 28. Themedial portion 464 is disposed between theproximal portion 462 and thedistal portion 466 and extends closer to thebottom portion 34 of thepouch 20 than the proximal anddistal portions medial portion 464 defines a trough or wedge shape. When pressure is applied from internal opening forces, themedial portion 464 creates acontact point 468 against thebody 74 and the distal portion creates acontact point 470 against the base 68 a of the secondmale closure element 442 a and/or theinternal side 48 of the opposingpouch wall 28. By increasing the length and/or shape of the legs of the secondfemale closure elements 442 b, an increase in the amount of force and/or flexure may be needed to open thesecond closure mechanism 438 b of some embodiments. - In a different embodiment of the present invention, two or more female closure elements include a longer spaced leg, such as the longer legs of
FIGS. 7 and 8 . Some of these embodiments include longer legs disposed in opposing directions, wherein one leg increases the internal opening force of a closure mechanism while the other longer leg increases the external opening force of a different closure mechanism. Indeed, some embodiments include female closure elements with both spaced legs being longer to provide for an overall increase in the external and internal opening forces required to open the closure mechanism. For example,FIG. 9 shows an embodiment that utilizes two longer spaced legs. Afirst closure mechanism 538 a comprises a firstmale closure element 540 a and a firstfemale closure element 540 b, wherein themale closure element 540 a, which is similar to the asymmetrical male closure elements described above, has thefirst hook portion 64 extending toward theupper edge 42 of thepouch 20. Asecond closure mechanism 538 b comprises a secondmale closure element 542 a and a secondfemale closure element 542 b, wherein the secondmale closure element 542 b has thesecond hook portion 78 extending toward thebottom portion 34 of thepouch 20 in the opposite direction of thefirst hook portion 64. The firstfemale closure element 540 b includes a first spacedleg 544 and a second longer spacedleg 546 that includes anextension 548, wherein the first spacedleg 544 is closer to theupper edge 42 than theextension 548. The secondfemale closure element 542 b includes a third longer spacedleg 550 that includes anextension 552 and a fourth spacedleg 554, wherein the third longer spacedleg 550 is closer to theupper edge 42 than theextension 552. Theextension 548 of the firstfemale closure element 540 b provides additional resistance against external opening forces, while theextension 552 of the secondfemale closure element 542 b provides additional resistance against internal opening forces. Specifically, when an internal opening force is exerted on thepouch 20, adistal portion 556 of theextension 552 abuts the base 68 a of the secondmale closure element 542 a and/or aproximal portion 558 of thebody 74 to create acontact point 560. When an external opening force is applied to thepouch 20, adistal portion 562 of theextension 548 abuts the base 54 a of the firstmale closure element 540 a and/or aproximal portion 564 of thebody 60 to create acontact point 566. -
FIG. 10 depicts a similar embodiment to that shown inFIG. 9 . However, instead of thefirst hook portion 64 being directed toward theupper edge 42, thefirst hook portion 64 is directed toward thebottom portion 34 of thepouch 20. Also, thesecond hook portion 78 is directed toward theupper edge 42. Thefirst leg 544 has theextension 548 as opposed to the second spacedleg 546, and the fourth spacedleg 554 has theextension 552 as opposed to the third spacedleg 550. Therefore, theextension 548 of the firstfemale closure element 540 b provides for additional resistance against internal opening forces, while theextension 552 of the secondfemale closure element 542 b provides for additional resistance against external opening forces. -
FIG. 11 shows yet another embodiment of the present invention. In this embodiment, both the first and secondfemale closure elements second pouch wall 28, while the first and secondmale closure elements first pouch wall 26. Also, the lengths of theextensions side pouch wall 26. Because thefirst leg 544 and thefourth leg 554 have increased lengths, the first andsecond pouch walls legs first pouch wall 26 also forces the first andsecond pouch walls first leg 544 and above thefourth leg 554. Achannel 568 is therefore created between the first andfourth legs FIG. 6 , thechannel 568 may be used to guide the user's fingers during closure of thepouch 20. -
FIG. 12 shows another embodiment of a closure mechanism according to the present invention. Similar to previous embodiments disclosed above, afirst closure mechanism 638 a includes first male andfemale closure elements male closure element 640 a includes anengagement member 642 that has twohook portions male closure element 640 a also includes abody 646 extending from a base 648 a, wherein theengagement member 642 is disposed on an end of thebody 646. The firstfemale closure element 640 b comprises a C-shaped profile that includes first and second spacedlegs legs female hook portions - A
second closure mechanism 638 b includes second male andfemale closure elements male closure element 654 a is similar to the male elements described above, wherein the secondmale closure element 654 a includes abody 656 extending from a base 658 a. Anengagement member 660 is disposed on an end of thebody 656 and ahook portion 662 extends from theengagement member 660 toward thebottom portion 34 of thepouch 20. Thehook portion 662 is smaller (i.e., has a lesser top-to-bottom extent as seen inFIG. 12 ) as compared to the hook portions found in the embodiments ofFIGS. 2-5 . The secondfemale closure element 654 b comprises an asymmetrical C-shaped profile with third and fourth spacedlegs legs legs female hook portions -
FIG. 13 depicts the third and fourthfemale hook portions female hook portion 668 are smaller than the width E and length G, respectively, of the fourth female hook portion 670 (the width D and length F may also be smaller than the corresponding dimensions of hook portions of the previous embodiments). Therefore, the thirdfemale hook portion 668 is thinner than the fourthfemale hook portion 670. The decreased size (i.e., the width and/or the length) of the thirdfemale hook portion 668 in comparison with the fourthfemale hook portion 670, in combination with the reduced size of thehook portion 662, cause the second closure mechanism to exhibit a decreased closing force. The decreased closing force arises from the fact that the third and fourth spacedlegs male closure element 654 a during closing. In addition, the thirdfemale hook portion 668 is flexible to further reduce closing force, but has sufficient rigidity to hold tightly to themale closure element 654 a and thereby reduce leakage. - In another embodiment, the width D and/or the length F of the third
female hook portion 668 are larger than the width E and length G, respectively, of the fourthfemale hook portion 670. The larger thirdfemale hook portion 668 therefore provides for an increase in the closing force of thesecond closure mechanism 638 b. In some embodiments, the external and internal opening forces are also increased when the width D and/or the length F are increased. By varying the width and length of single or multiple female hook portions in different closure mechanisms, numerous combinations of increased and/or decreased opening and/or closing forces may be obtained. Similar to the other embodiments discussed above, the first and secondfemale closure elements male closure elements second pouch walls upper edge 42 of the pouch as desired. It is also envisioned that additional closure mechanisms (i.e., three or more) may be provided with at least one of the spaced legs of one or more of the closure mechanisms having a hook portion larger than a hook portion of another spaced leg of the same closure mechanism(s). - It should be readily apparent to those skilled in the art that numerous combinations of symmetric and asymmetric male and female closure elements are possible to create pouches with a multitude of differing opening and closing forces. The number of closure mechanisms and the order and placement on the pouch walls may be varied to adjust the opening and closing characteristics of the pouch. Additionally, it is envisioned that various other closure characteristics, such as tactile feedback, aural feedback, etc., can be used in conjunction with the aforementioned embodiments of the present invention.
- In any of the embodiments illustrated in
FIGS. 3-6 , a pouch may include at least three closure mechanisms that are adjacent each other but spaced from one another by a distance that is sufficiently small to create the perception that the mechanisms act as a single closure. In addition, the closure mechanisms are preferably disposed sufficiently far apart such that a user's finger(s) and/or thumb are guided during the closing operation. Similar to the dual closure mechanism embodiments above, these results are accomplished by spacing adjacent closure mechanisms between about 0.05 inch (1.27 mm) and 0.15 inch (3.81 mm) apart, and, more preferably, between about 0.08 inch (2.03 mm) and about 0.12 inch (3.05 mm) apart and most preferably about 0.1 inch (2.54 mm) apart, although different spacing may instead be used. - For example, in the embodiment depicted in
FIG. 4 , thefirst closure mechanism 138 a is adjacent thesecond closure mechanism 138 b but is spaced a first distance therefrom. Thesecond closure mechanism 138 b is adjacent thethird closure mechanism 138 c but is spaced a second distance therefrom. Thethird closure mechanism 138 c is adjacent thefourth closure mechanism 138 d but is spaced a third distance therefrom. When thepouch 20 is closed, none of the closure mechanisms contact one another. In addition, no closure elements are disposed between adjacent closure mechanisms. In the present example, this means there is no closure element between the first andsecond closure mechanisms third closure mechanisms fourth closure mechanisms pouch 20. Other embodiments may utilize three closure mechanisms or more than four. In any embodiment, the distance between adjacent closure mechanisms may be adjusted so long as the aforementioned properties are still evident. - Further, in any of the embodiments depicted in
FIGS. 3-6 , the multiple closure mechanisms may include differing closure characteristics. For example, the first closure mechanism ofFIG. 4 has a first closure characteristic, the second closure mechanisms has a second closure characteristic, the third closure mechanism may has a third closure characteristic, and the fourth closure mechanism has a fourth closure characteristic. In any of the embodiments depicted inFIGS. 3-6 , one or more of the first, second, third, and fourth closure mechanisms may have a different closure characteristic than one or more of the remaining closure mechanisms. For example, the first closure characteristic comprises the first closure mechanism having a greater resistance to external opening forces than one or more of the remaining closure mechanisms. In another embodiment, the first closure characteristic comprises the first closure mechanism having a greater resistance to internal opening forces than one or more of the remaining closure mechanisms. In yet another embodiment, the first closure characteristic comprises the first closure mechanism having a greater resistance to closing forces than one or more of the remaining closure mechanisms. - The present invention comprehends multiple closure mechanisms that have opening and closing force characteristics that can permit easy closing of a pouch yet provide a desired level of resistance against external and internal opening forces. Thus, closing and opening is improved and the expenditure of wasted effort by the user is minimized.
- Numerous modifications will be apparent to those skilled in the art in view of the foregoing description. Accordingly, this description is to be construed as illustrative only and is presented for the purpose of enabling those skilled in the art to make and use the invention and to teach the best mode of carrying out same. The exclusive rights to all modifications which come within the scope of the appended claims are reserved.
Claims (10)
1. A reclosable pouch, comprising:
a body portion having first and second pouch walls;
a first closure mechanism disposed on internal sides of the first and second pouch walls, wherein the first closure mechanism includes a first male profile and a first female profile with first and second spaced legs, the first and second spaced legs having first and second female hook portions disposed on a distal end thereof, respectively;
a second closure mechanism disposed on the internal sides of the first and second pouch walls, wherein the second closure mechanism includes a second male profile and second female profile with third and fourth spaced legs, the third and fourth spaced legs having third and fourth female hook portions disposed on a distal end thereof, respectively; and
wherein one of the first, second, third, or fourth female hook portions is thinner than the other female hook portion of the same female profile.
2. The reclosable pouch of claim 1 , wherein the first male closure profile is substantially symmetric about a centerline.
3. The reclosable pouch of claim 2 , wherein the first male closure profile includes an engagement member that has two hook portions extending therefrom.
4. The reclosable pouch of claim 1 , wherein the second male closure profile is substantially asymmetric about a centerline.
5. The reclosable pouch of claim 4 , wherein the second male closure profile includes an engagement member that has a hook portion extending therefrom.
6. The reclosable pouch of claim 1 , wherein one of the first, second, third, or fourth female hook portions is thinner than the other female hook portion of the same female profile because a width of one of the first, second, third, or fourth female hook portions is smaller than the width of the other female portion of the same female profile.
7. The reclosable pouch of claim 1 , wherein one of the first, second, third, or fourth female hook portions is thinner than the other female hook portion of the same female profile because a length of one of the first, second, third, or fourth female hook portions is smaller than the length of the other female portion of the same female profile.
8. The reclosable pouch of claim 1 , wherein the first male closure profile engages with the first female profile with a first closing force and the second male profile engages with the second female profile with a second closing force that is different than the first closing force.
9. The reclosable pouch of claim 1 , wherein the first male profile disengages from the first female profile with a first external opening force and the second male profile disengages from the second female profile with a second external opening force that is different than the first external opening force.
10. The reclosable pouch of claim 1 , wherein the first male profile disengages from the first female profile with a first internal opening force and the second male profile disengages from the second female profile with a second internal opening force that is different than the first internal opening force.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/875,391 US20050271308A1 (en) | 2004-06-04 | 2004-06-24 | Closure device for a reclosable pouch |
TW094117798A TW200600420A (en) | 2004-06-04 | 2005-05-31 | Closure device for a reclosable pouch |
PCT/US2005/019121 WO2005120971A1 (en) | 2004-06-04 | 2005-06-01 | Closure device for a reclosable pouch |
CA002568867A CA2568867A1 (en) | 2004-06-04 | 2005-06-01 | Closure device for a reclosable pouch |
ARP050102271A AR049821A1 (en) | 2004-06-04 | 2005-06-02 | CLOSURE DEVICE FOR A RESELLABLE BAG |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/861,674 US7850368B2 (en) | 2004-06-04 | 2004-06-04 | Closure device for a reclosable pouch |
US10/875,391 US20050271308A1 (en) | 2004-06-04 | 2004-06-24 | Closure device for a reclosable pouch |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/861,674 Continuation-In-Part US7850368B2 (en) | 2004-06-04 | 2004-06-04 | Closure device for a reclosable pouch |
Publications (1)
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US20050271308A1 true US20050271308A1 (en) | 2005-12-08 |
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ID=34971423
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US10/875,391 Abandoned US20050271308A1 (en) | 2004-06-04 | 2004-06-24 | Closure device for a reclosable pouch |
Country Status (5)
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---|---|
US (1) | US20050271308A1 (en) |
AR (1) | AR049821A1 (en) |
CA (1) | CA2568867A1 (en) |
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US7784160B2 (en) | 2007-03-16 | 2010-08-31 | S.C. Johnson & Son, Inc. | Pouch and airtight resealable closure mechanism therefor |
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US20080240625A1 (en) * | 2007-03-26 | 2008-10-02 | Illinois Tool Works Inc | Slider zipper with hinged secondary locking profile |
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US11572219B2 (en) | 2019-02-08 | 2023-02-07 | Elplast Europe Sp. Z O.O. | Zipper closure and package using the same |
Also Published As
Publication number | Publication date |
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TW200600420A (en) | 2006-01-01 |
CA2568867A1 (en) | 2005-12-22 |
AR049821A1 (en) | 2006-09-06 |
WO2005120971A1 (en) | 2005-12-22 |
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Legal Events
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AS | Assignment |
Owner name: S.C. JOHNSON HOME STORAGE, INC., WISCONSIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PAWLOSKI, JAMES C.;REEL/FRAME:021715/0001 Effective date: 20040712 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |