Reclosable package having an accessible zipper and a method for making the same

Information

  • Patent Grant
  • 7341160
  • Patent Number
    7,341,160
  • Date Filed
    Thursday, August 8, 2002
    21 years ago
  • Date Issued
    Tuesday, March 11, 2008
    16 years ago
Abstract
A reclosable package includes a tray, a top sheet, and a fastener. The tray has a well for receiving contents and a peripheral flange surrounding the well. The top sheet is attached to the peripheral flange. The fastener has two interlocking members, one attached to the peripheral flange and the other attached to the top sheet. A tamper-evident feature located on the package prevents access to the fastener and is connected thereto by one or two lines of weaknesses. In one embodiment with one or two lines of weakness in the top sheet, the fastener remains adjacent to the tray's peripheral flange, which is intact after the tamper-evident feature is removed by tearing along these lines of weakness. In a second embodiment with two lines of weakness, the tamper-evident feature, comprised of portions of the peripheral flange and the top sheet, is torn from the package along both lines of weakness.
Description
FIELD OF THE INVENTION

The present invention relates to reclosable packages and, in particular, to packages that have a formed tray with a flexible cover over the tray.


BACKGROUND OF THE INVENTION

Plastic packages are popular for storing food products and other items. Reclosable packages that can be securely closed and reopened are particularly popular due to their ability to maintain freshness of the food stored in the package and to minimize leakage to and from the package. Thus, reclosable packages are very common, especially in the food industry.


Reclosable packages are typically made to be reclosable via the use of a reclosable feature, such as a resealable adhesive seal or a reclosable zipper. Reclosable zippers can be opened and closed either by finger pressure or by use of an auxiliary slider mechanism. Because of the mechanical sealing provided by a zipper, the zipper has become the preferred type of reclosable feature.


In one particular type of package, a formed tray is sealed by flexible cover that is positioned over the formed tray. These formed-tray packages are especially useful for packaging items such as meats and cheese. Because these types of contents are not all used at once, it is desirable to have these formed-tray packages include a tamper-evident feature and a reclosable zipper. Further, because the opening and closing of these zippers is more easily accomplished by use of a slider, consumers prefer a slider-actuated zipper.


The present invention relates to an improved formed-tray package having a tamper-evident feature and a zipper that is preferably actuated by a slider.


SUMMARY OF THE INVENTION

The present invention is a reclosable package having a tray, a top sheet, and a fastener. The tray has a well and a peripheral flange. The well receives contents and the peripheral flange surrounds the well. The top sheet is attached to the peripheral flange.


The fastener has first and second interlocking members. The first interlocking member is attached to the peripheral flange and the second interlocking member is attached to the top sheet. A tamper-evident feature is attached to the top sheet along a line of weakness and prevents access to the fastener. The tamper-evident feature is also removably attached to the peripheral flange, usually by a peel seal.


To gain initial access to the package, the tamper-evident feature is removed from the package to allow access to the fastener. After the tamper-evident feature is removed from the package by tearing it from the top sheet along the line of weakness, the peripheral flange of the tray remains entirely intact. As such, in this first embodiment, the removable tamper-evident feature is a part of only the top sheet.


In a variation of this first embodiment, the tamper-evident feature may be attached to the peripheral flange with a stronger seal. The top sheet, however, includes a second line of weakness near the stronger seal, allowing the tamper-evident feature to be torn from the package between the two lines of weakness. Thus, the tamper-evident feature is that portion of the top sheet defined between the two lines of weakness.


In a second embodiment, the top sheet is attached to the sides and the bottom of the peripheral flange with a generally continuous first seal. The top sheet is further attached to the top of the peripheral flange with a generally continuous second seal. The first seal is spaced away from the second seal. The fastener has a first interlocking member attached to the peripheral flange and a second interlocking member attached to the top sheet. The fastener provides a seal between the top sheet and the tray along a line that extends between the two sides of the peripheral flange.


In this second embodiment, a tamper-evident feature is attached to the top sheet along a first line of weakness and attached to the peripheral flange of the tray along a second line of weakness. The first and second lines of weakness are above the first seal. The tamper-evident feature is removable from the package along the lines of weakness to allow access to the fastener.


The above summary of the present invention is not intended to represent each embodiment, or every aspect, of the present invention. This is the purpose of the Figures and the detailed description which follow.





BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing and other advantages of the invention will become apparent upon reading the following detailed description and upon reference to the drawings.



FIGS. 1A and 1B illustrate a package according to the present invention.



FIG. 2 illustrates the package of FIG. 1 after a removable section of the top cover has been removed to provide access to the fastener.



FIGS. 3A and 3B illustrate a package according to an alternative embodiment of the present invention shown in FIGS. 1 and 2.



FIG. 4 illustrates the package of FIG. 3 after a removable section of the top cover has been removed to provide access to the fastener.



FIG. 5 illustrates the steps in a process that can be used to fabricate the package according to the present invention.



FIGS. 6A and 6B illustrate a package according to another embodiment of the present invention.



FIG. 7 illustrates the package of FIG. 6 after a removable section of the top cover has been removed to provide access to the fastener.


FIG 8 is an illustration of a fastener 420 having fins 428, 411 connected by a line of weakness 438.


While the invention is susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and will be described in detail herein. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed. Rather, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.





DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS


FIGS. 1A and 1B illustrate a package 10 having a tray 12 and the top sheet 14 (or “top cover”). The tray 12 has a well 16 in which contents can be placed and a peripheral flange 18 extending around the well 16. The package may include a peg hole 19 for receiving a peg from which the package 10 may hang in a retail store.


To gain access to the contents located within the well 16, a fastener 20 is located along the top portion of the peripheral flange 18. As is known in the art, the fastener 20 includes first and second interlocking members that can be manipulated to open and close the package 10. The fastener 20 also includes fins extending downwardly from the interlocking members. In this package 10, one fin is attached to the top sheet 14 while the other fin is attached to the tray 12. Preferably, the fastener 20 includes a slider 22 that allows the user to more easily open and close the interlocking members of the fastener 20. The fastener 20 also includes a sealed notch region 24 located at the two terminal ends of the interlocking members. These sealed notches 24 are useful in the process used to manufacture and assemble the fastener 20 by itself before it is placed on the package 10. The fastener 20 and its notches 24 are disclosed in more detail in U.S. patent application Ser. No. 09/636,421, which is incorporated herein by reference in its entirety. The fastener 20 also includes end terminations 25 for limiting the movement of the slider 22. The end termination 25 can be made by over-molding material on the end termination or by ultrasonic crushing.


The tray 12 preferably includes a slider recess 26 in which the slider 22 resides so that the slider 22 does not hinder the sealing process that is used to attach the top sheet 14 to the peripheral flange 18. This slider recess 26 is preferably located at a region on the top portion of the peripheral flange 18 such that the slider 22 is parked in its closed position or adjacent to its closed position. The reason that it may be preferable to locate the slider recess 26 at a point where the slider 22 is not fully closed relates to the fact that it is often desirable to evacuate the package 10 during its assembly, and it is necessary to have an opening in the interlocking members of the fastener 20 through which air located within the fastener 20 between the interlocking members and a sealed portion of the fins below the interlocking members can vacate the fastener 20. This will be discussed below in more detail.


The top sheet 14 has a line of weakness 32 adjacent to the fastener 20 and preferably located between an uppermost portion of the slider 22 and the well 16. The line of weakness 32 may be in several forms, such as mechanical scores, laser scores, perforations, or thinned sections. The top sheet 14 also includes a graspable section 34 that includes a tear line 36. When the consumer initially desires to gain access to the contents of the package 10, the consumer grasps the graspable section 34 and begins tearing the top sheet 14 above the tear line 36. Thus, the top sheet 14 can be thought of as being attached to or including a removable section 40 as is shown in FIG. 2. This removable section 40 provides a tamper-evident feature to the package 10. The top part of the flange 18 remains intact after the initial accessing to allow the consumer to grasp the package when moving the slider 22 to open the package 10.


To better preserve the contents in the package 10, the package 10 includes a hermetic seal 42 between the tray 12 and the top sheet 14 along the left side, right side, and bottom of the flange 18. Further, the fastener 20 includes a hermetic seal 44, usually brought about through the attachment of fins extending downwardly from the interlocking members. This seal 44 on the fastener 20 is preferably a tamper-evident, barrier seal, such as the one described in U.S. patent application Ser. No. 09/468,165, which is owned by the assignee of the present application and is incorporated herein by reference in its entirety. Because the interlocking members of the fastener 20 are located outside the hermetic seal 44 provided by the fin structure of the fastener 20, there is less chance for the interlocking members to cause side seal leaks as they are outside the region that must be flattened to develop the hermetic seals 42. A top seal 46, usually a peelable seal, between the flange 18 and the top sheet 14 partially surrounds the fastener 20.


The hermetic seal 42 on the left side, right side, and bottom of the flange 18 is strong and is brought about through films placed on the tray 12 and the top sheet 14 that are in contact. For example, the tray 12 is made of formable material, such as a multi-layer polymeric lamination, and is usually about 5 mils in thickness to provide some rigidity, allowing the tray 12 to remain in the formed configuration shown in FIGS. 1 and 2. The top sheet 14 is usually about 1-3 mils in thickness and is a polymeric film or a multi-layer polymeric lamination The top sheet 14 includes a layer that, when contacted with the material of the tray 12 under pressure (or heat and pressure), causes the seals 42 and 46 to withstand an opening force of about 2-3 lbs.


Alternatively, the hermetic seal 42 on the three sides of the flange 18 is made of a stronger seal (e.g., about 5-6 lbs. of opening force required) and the top seal 46 is a weaker seal so that the removable section 40 can be readily peeled from the package 10.



FIGS. 3A and 3B illustrate an alternative package 110 with a tamper-evident feature that has most of the same features as the package 10 of FIGS. 1 and 2, except that all of the reference numerals are now 100-series reference numerals. The package 110 includes a tray 112 and a top sheet 114 that is sealed to a peripheral flange 118 of the tray 112. A fastener 120 resides between the top sheet 114 and the tray 112 at the top portion of the peripheral flange 118.


To seal the contents of the package 110, the top sheet 114 and the tray 112 are sealed with a relatively strong seal 142 along the peripheral flange 118. Additionally, this process 200 involves sealing the top sheet 114 to the flange 118 along a top seal 142a above the fastener 120. The fastener 120 has a hermetic seal 144, which is brought about by the attachment of a fin structure located below the interlocking members, as described with respect to FIGS. 1 and 2.


To initially gain access to the package 110, the consumer grasps a graspable section 134, which is located between a first line of weakness 132 and a second line of weakness 133. When doing so, a removable section 140 (FIG. 4) can be torn from the package 110 along these lines of weakness 132, 133, thereby providing a tamperevident feature. As with the embodiment of FIG. 1, the line of weakness 132 is located at a region whereby removal of the removable section 140 provides easy access to the slider 122 and, more preferably, to the entire fastener 120. Thus, the primary difference between the package 110 and the package 10 of FIGS. 1 and 2 is that the package 110 has a second line of weakness 133 and a stronger seal 142a at the top part of the peripheral flange 118 that causes a portion of the top sheet 114 to remain attached to the peripheral flange 118 after the removable section 140 is torn from the package 110.


It should be noted that in the embodiment of FIGS. 3 and 4, the strength of the seals 142, 142a can be made enhanced (e.g., 5 to 6 lbs.) everywhere since the second breakable line of weakness 133 removes the need for peeling the tamper-evident removable section 140 from the package 110.



FIG. 5 illustrates a process 200 by which the package 10 or the package 110 can be made. The process 200 includes formable material 202, a continuous length of fastener 204, and a roll of material 206 for the top cover sheet. As shown, the process 200 involves a chain of packages that are placed in multiple lanes (three lanes shown), as shown in U.S. Pat. No. 4,949,527, which is incorporated herein by reference in its entirety. In the first step, generally denoted as step 210, the formable material 202 is formed to create a series of wells 212 and slider recesses 214.


In the second step, generally denoted as step 216, the contents for the packages are placed into the wells 212. Additionally, vacuum holes 218 are placed in the formable material adjacent to the wells 212 of the packages. Also, these vacuum holes 218 can be placed in the formable material in a step prior to placement of the contents of the packages into the wells 212.


In the third step 220, a continuous length of fastener 204 is partially attached to the formable material 202. In doing so, a slider located on the fastener 204 is registered such that it falls within the slider recesses 214 located in the formable material 202. The attachment of the continuous length of fastener 204 to the formable material 202 can be accomplished through tacking via adhesive, or by a permanent bond between a fin structure located on the fastener 204 and the formable material 202. The continuous length of fastener 204 can be supplied (and attached to the formable material 202) in the manner that is generally disclosed in U.S. patent application Ser. No. 09/636,421, which is owned by the assignee of the present application and is incorporated herein by reference in its entirety. Such a length of fastener 204 has a slider pre-applied, end stops pre-applied, and sealed sections adjacent the end stops at the point where the fastener 204 is attached to the two sides of the peripheral flange.


In the fourth step, generally denoted as step 222, the roll of material 206 is unwound and placed over the formable material 202 to create a cover sheet 223. The roll of material 206 has the structures (e.g., perforations) which result in the line of weakness 32 (FIGS. 1 and 2) or lines of weakness 132, 133 (FIGS. 3 and 4). Additionally, the roll of material 206 contains the layers of material needed to form the hermetic seal 42 and the peelable seal 46 (FIGS. 1 and 2), or the seals 142, 142a (FIGS. 3 and 4).


In the fifth step, generally denoted as step 224, the cover sheet 223 is sealed along that portion of the formable material 200 that is adjacent to each of the wells 212. This seal, as described above, is a strong seal which is capable of withstanding the forces of carrying the contents in each individual package. Usually, at this step, the fastener 204 is permanently sealed to both the top cover 223 and the formable material 202. Also during this step, the air located in the region defined by the cover sheet 223, the formable material 202, and the contents within the wells 212 is evacuated through the vacuum holes 218. As mentioned previously with respect to FIG. 1, because the sliders are located within the slider recesses 214 at a point where the interlocking members of the fastener 200 are not fully closed, the evacuation process causes any air trapped within the fastener 200 to be evacuated, as well.


Finally, in the sixth step, generally denoted as step 226, each of the packages is cut from the formable material 202. These individual packages, which are the packages 10, 110 discussed in FIGS. 1-4, are then arranged in a configuration for inventory or delivery purposes.



FIGS. 6A and 6B illustrate an alternative package 310 that differs from the previous embodiments by having the tamper-evident feature comprised of a portion of both the tray 312 and the top sheet 314. As in the previous embodiments, the top sheet 314 is attached to a peripheral flange 318 of the tray 312. A fastener 320 is located between and attached to the tray 312 and the top sheet 314. The fastener 320 preferably includes a slider 322 for transitioning the interlocking members of the fastener 320 between an open position and a closed position.


The top sheet 314 and the peripheral flange 318 of the tray 312 include, respectively, a first line of weakness 333a and a second line of weakness 333b. The lines of weakness 333 are at substantially the same height on the package 310 such that they are adjacent to each other. While the lines of weakness 333 are shown as being above the fastener 320 and the slider 322, they could also be below the slider 322, or even below the interlocking members of the fastener 320. The top sheet 314 and the peripheral flange 318 have unattached regions 335a and 335b below the lines of weakness 333. As in the previous embodiments, the top sheet 314 is attached to the peripheral flange 318 on the bottom and two sides of the peripheral flange by a hermetic seal 342. Additionally, the top sheet 314 is attached to the top portion of the flange 318 with a second seal 342a. Accordingly, the first hermetic seal 342 is spaced away from the second seal 342a by the dimension of the unattached regions 335. The fastener 320 also includes a hermetic seal 344 that extends between the two sides of the peripheral flange 318 to maintain the integrity of the contents located within the tray 312. This hermetic seal 344 is breakable by the consumer when the consumer accesses the contents the first time.


As shown in FIG. 7, to gain access to the fastener 320 and the slider 322, the tamper-evident removable section 340 is pulled from the top of the package 310. Because the tray 312 is made of a material that is substantially more rigid than the top sheet 314, the fastener 320 and the slider 322 remain adjacent to the top of the peripheral flange 318. The top sheet 314, however, has a foldable section 345 above an attachment line 346 where the fin of the fastener 320 is attached to the top sheet 314. This foldable section 345, located below the first line of weakness 333a, is easily folded downwardly by the consumer to gain access to the fastener 320 and the slider 322. Unlike prior art systems, the entire length of the foldable section 345 can be rotated downwardly due to the unattached regions 335 located at the side edges of the peripheral flange 318 between the hermetic seal 342 and the second seal 342a (i.e., adjacent to the ends of the fastener 320). In essence, the attachment line 346 is a hinge around which the foldable section 345 is rotated.


The package 310 can be made in generally the same manner described with respect to FIG. 5. The primary difference is that the flange 318 must include structures providing the breakable line of weakness 333b. This can be accomplished by having the formable material having the wells include this line-of-weakness structure before attaching the fastener to the formable material. Or, the lines of weakness 333a and 333b can be formed simultaneously by a device (e.g., a laser) after the top sheet is located on the formable material.


While the present invention has been described with reference to one or more particular embodiments, those skilled in the art will recognize that many changes may be made thereto without departing from the spirit and scope of the present invention. Each of these embodiments and obvious variations thereof is contemplated as falling within the spirit and scope of the claimed invention, which is set forth in the following claims.

Claims
  • 1. A reclosable package, comprising: a tray having a well and a peripheral flange, said well receiving contents and said peripheral flange surrounding a perimeter of said well;a top sheet attached to said peripheral flange with a generally continuous first seal extending around less than the perimeter of said well; said top sheet attached to an upper portion of said peripheral flange with a second seal separated from the first seal;a fastener having first and second interlocking members, said first interlocking member being attached to said peripheral flange, and said second interlocking member being attached to said top sheet along an attachment region;a recess defined in the flange of the tray, the recess configured to receive a slider;a tamper-evident feature attached to said top sheet along a first line of weakness and attached to said peripheral flange of said tray along a second line of weakness, said tamper-evident feature being removable from said package to allow access to said fastener; andwherein, in response to said tamper-evident feature being removed from said package, said fastener remains directly adjacent to said peripheral flange of said tray, and an entire length of said top sheet located below said first line of weakness and above said attachment region is foldable away from both said first and said second interlocking members of said fastener, while said first and said second interlocking members remain interlocked.
  • 2. The reclosable package of claim 1, wherein said slider operates to transition said fastener between an open position and a closed position, said slider resides in said recess when said fastener is moved toward said closed position.
  • 3. The reclosable package of claim 2, wherein said first and second lines of weakness are located above said slider.
  • 4. The reclosable package of claim 1, wherein said first and second lines of weakness are at substantially the same heights on said package.
  • 5. The reclosable package of claim 1, wherein said tray is substantially more rigid than said top sheet.
  • 6. The reclosable package of claim 1, wherein said peripheral flange includes a bottom, two sides, and said top, said fastener being located adjacent said top, one of said two sides including a peg hole for receiving a peg that allows the package to be displayed in a retail store.
  • 7. The reclosable package of claim 1, wherein said fastener includes a hermetic seal adjacent to said first and second interlocking members, said hermetic seal being broken after said tamper-evident feature is removed from said package.
  • 8. A reclosable package, comprising: a tray having a well and a peripheral flange, said well receiving contents and said peripheral flange surrounding a perimeter of said well, said peripheral flange having a top, two sides and a bottom;a top sheet attached to said bottom and at least a portion of each of said sides of said peripheral flange with a generally continuous first seal extending around less than the perimeter of said well, said top sheet further being attached to said top of said peripheral flange with a generally continuous second seal, said first seal being spaced away from said second seal;a fastener having first and second interlocking members, said first interlocking member being attached to said peripheral flange and said second interlocking member being attached to said top sheet; anda tamper-evident feature attached to said top sheet along a first line of weakness and attached to one of said top sheet and said peripheral flange of the tray along a second line of weakness, said first and second lines of weakness being above said first seal, said tamper-evident feature being removable from said package along said lines of weakness to allow access to said fastener.
  • 9. The reclosable package of claim 8, wherein said fastener includes a hermetic seal adjacent to said first and second interlocking members, said hermetic seal being breakable by a consumer after said tamper-evident feature is removed from said package.
  • 10. The reclosable package of claim 9, wherein said hermetic seal is located below said first and second interlocking members.
  • 11. The reclosable package of claim 8, further including a hermetic seal extending generally parallel to said interlocking members between said two sides of said peripheral flange.
  • 12. The reclosable package of claim 8, further including a slider attached to said fastener for transitioning said fastener between an open position and a closed position.
  • 13. The reclosable package of claim 12, wherein said lines of weakness are above said slider, edge sections of said top sheet adjacent to said two sides of said peripheral flange being unattached to said peripheral flange allowing an entire length of said top sheet between said two sides of said peripheral flange to be folded away from said peripheral flange.
  • 14. The reclosable package of claim 12, wherein said lines of weakness are below said slider.
  • 15. The reclosable package of claim 8, wherein said lines of weakness are below said second seal.
  • 16. The reclosable package of claim 8, wherein one of said two sides of said peripheral flange includes a peg hole for receiving a peg to display said package in a retail setting.
  • 17. The reclosable package of claim 8, wherein said lines of weakness are adjacent to each other.
  • 18. A reclosable package, comprising: a tray having a well and a peripheral flange, said well receiving contents and said peripheral flange surrounding a perimeter of said well, said peripheral flange having a top, two sides and a bottom;a top sheet attached to said bottom and at least a portion of each of said sides of said peripheral flange with a generally continuous first seal extending around less than the perimeter of said well, said top sheet further being attached to said top of said peripheral flange with a generally continuous second seal, said first seal being spaced from said second seal;a fastener having first and second interlocking members, said first interlocking member being attached to said peripheral flange and said second interlocking member being attached to said top sheet, said fastener having a first end and a second end; anda tamper-evident feature attached to said top sheet along a first line of weakness and said peripheral flange of said tray along a second line of weakness, said tamper-evident feature being removable from said package along said lines of weakness to allow access to said fastener, said lines of weakness being above said fastener, edges of said peripheral flange of said tray and said top sheet that are adjacent to said first and second ends of said fastener being unattached so that said fastener is accessible between said peripheral flange of said tray and said top sheet after said tamper-evident feature is removed.
  • 19. The redo sable package of claim 18, wherein each of said first and said second ends of said fastener include an unattached region, said first and second interlocking members being located between said unattached regions.
  • 20. The reclosable package of claim 18, wherein said fastener includes a hermetic seal adjacent to said first and second interlocking members, said hermetic seal being breakable by a consumer after said tamper-evident feature is removed from said package.
  • 21. The reclosable package of claim 20, wherein said hermetic seal is located below said first and second interlocking members.
  • 22. The reclosable package of clam 18, further including a slider attached to said fastener for transitioning said fastener between an open position and a closed position.
  • 23. The reclosable package of claim 22, wherein said lines of weakness are above said slider.
  • 24. The reclosable package of claim 22, wherein said lines of weakness are below said slider.
  • 25. A reclosable package, comprising: a tray having a well and a peripheral flange, said well receiving contents and said peripheral flange surrounding a perimeter of said well, said peripheral flange having a top, two sides and a bottom;a top sheet attached to said bottom and at least a portion of each of said sides of said peripheral flange with a generally continuous first seal extending around less than the perimeter of the well, said top sheet further being attached to said top of said peripheral flange with a generally continuous second seal, said first seal being spaced away from said second seal, said top sheet having edge sections, said edge sections being adjacent to said two sides of said peripheral flange and being unattached to said peripheral flange allowing an entire length of said top sheet between said two sides of said peripheral flange to be folded away from said peripheral flange;a fastener having first and second interlocking members, said first interlocking member being attached to said peripheral flange and said second interlocking member being attached to said top sheet;a slider attached to said fastener for transitioning said fastener between an open position and a closed position; anda tamper evident feature attached to said top sheet along a first line of weakness and attached to said peripheral flange of the tray along a second line of weakness, said first and second lines of weakness being above said first seal and above said slider, said tamper-evident feature being removable from said package along said lines of weakness to allow access to said fastener.
  • 26. A reclosable package comprising: a tray having a well and a peripheral flange, said well receiving contents and said peripheral flange surrounding a perimeter of said well, said peripheral flange having a top, two sides and a bottom;a top sheet attached to said bottom and at least a portion of each of said sides of said peripheral flange with a generally continuous first seal extending around less than the perimeter of said well, said top sheet further being attached to said top of said peripheral flange with a generally continuous second seal, said first seal being spaced away from said second seal;a fastener having first and second interlocking members, said first interlocking member being attached to said peripheral flange and said second interlocking member being attached to said top sheet;a slider attached to said fastener for transitioning said fastener between an open position and a closed position; anda tamper evident feature attached to said top sheet along a first line of weakness and attached to said peripheral flange of the tray along a second line of weakness, said first and second lines of weakness being above said first seal and below said slider, said tamper-evident feature being removable from said package along said lines of weakness to allow access to said fastener.
US Referenced Citations (188)
Number Name Date Kind
3181583 Lingenfelter May 1965 A
3381592 Ravel May 1968 A
3473589 Götz Oct 1969 A
3532571 Ausnit Oct 1970 A
RE27174 Ausnit Sep 1971 E
3608439 Ausnit Sep 1971 A
3613524 Behr et al. Oct 1971 A
3701191 Laguerre Oct 1972 A
3701192 Laguerre Oct 1972 A
3785111 Pike Jan 1974 A
3839128 Arai Oct 1974 A
3948705 Ausnit Apr 1976 A
4094729 Boccia Jun 1978 A
4196030 Ausnit Apr 1980 A
4240241 Sanborn, Jr. Dec 1980 A
4241865 Ferrell Dec 1980 A
4246288 Sanborn, Jr. Jan 1981 A
4277241 Schulze Jul 1981 A
4341575 Herz Jul 1982 A
4355494 Tilman Oct 1982 A
4372793 Herz Feb 1983 A
4415386 Ferrell et al. Nov 1983 A
4430070 Ausnit Feb 1984 A
4437293 Sanborn, Jr. Mar 1984 A
4517788 Scheffers May 1985 A
4528224 Ausnit Jul 1985 A
4563319 Ausnit et al. Jan 1986 A
4581006 Hugues et al. Apr 1986 A
4582549 Ferrell Apr 1986 A
4589145 Van Erden et al. May 1986 A
4601694 Ausnit Jul 1986 A
4617683 Christoff Oct 1986 A
4620320 Sullivan Oct 1986 A
4651504 Bentsen Mar 1987 A
4655862 Christoff et al. Apr 1987 A
4663915 Van Erden et al. May 1987 A
4666536 Van Erden et al. May 1987 A
4673383 Bentsen Jun 1987 A
4691372 Van Erden Sep 1987 A
4703518 Ausnit Oct 1987 A
4709398 Ausnit Nov 1987 A
4709533 Ausnit Dec 1987 A
4710157 Posey Dec 1987 A
4782951 Griesbach et al. Nov 1988 A
4787880 Ausnit Nov 1988 A
4790126 Boeckmann Dec 1988 A
4807300 Ausnit et al. Feb 1989 A
4812074 Ausnit et al. Mar 1989 A
4823961 Griesbach et al. Apr 1989 A
4840012 Boeckmann Jun 1989 A
4840611 Van Erden et al. Jun 1989 A
4844759 Boeckmann Jul 1989 A
4850178 Ausnit Jul 1989 A
4876842 Ausnit Oct 1989 A
4878987 Ven Erden Nov 1989 A
4892414 Ausnit Jan 1990 A
4892512 Branson Jan 1990 A
4894975 Ausnit Jan 1990 A
4896775 Boeckmann et al. Jan 1990 A
4909017 McMahon et al. Mar 1990 A
4924655 Posey May 1990 A
4925318 Sorensen May 1990 A
4929225 Ausnit et al. May 1990 A
4941307 Wojcik Jul 1990 A
4949527 Boeckmann et al. Aug 1990 A
4969309 Schwarz et al. Nov 1990 A
4974395 McMahon Dec 1990 A
4993212 Veoukas Feb 1991 A
5005707 Hustad et al. Apr 1991 A
5014498 McMahon May 1991 A
5014856 Griesbach et al. May 1991 A
5027584 McMahon et al. Jul 1991 A
5036643 Bodolay Aug 1991 A
5036645 Schwarz Aug 1991 A
5042224 McMahon Aug 1991 A
5046300 Custer et al. Sep 1991 A
5047002 Zieke et al. Sep 1991 A
5050736 Griesbach et al. Sep 1991 A
5063639 Boeckmann et al. Nov 1991 A
5067208 Herrington, Jr. et al. Nov 1991 A
5072571 Boeckmann Dec 1991 A
5077064 Hustad et al. Dec 1991 A
5085031 McDonald Feb 1992 A
5088971 Herrington Feb 1992 A
5092831 James et al. Mar 1992 A
5096516 McDonald et al. Mar 1992 A
5105603 Natterer Apr 1992 A
5107658 Hustad et al. Apr 1992 A
5111643 Hobock May 1992 A
5116301 Robinson et al. May 1992 A
5127208 Custer et al. Jul 1992 A
5131121 Herrington, Jr. et al. Jul 1992 A
5147272 Richison et al. Sep 1992 A
5161286 Herrington, Jr. et al. Nov 1992 A
5179816 Wojnicki Jan 1993 A
5188461 Sorensen Feb 1993 A
5198055 Wirth et al. Mar 1993 A
5211482 Tilman May 1993 A
5224779 Thompson et al. Jul 1993 A
5247781 Runge Sep 1993 A
5254073 Richison et al. Oct 1993 A
5259904 Ausnit Nov 1993 A
5273511 Boeckman Dec 1993 A
5322579 Van Erden Jun 1994 A
5334127 Bruno et al. Aug 1994 A
5383989 McMahon Jan 1995 A
5400565 Terminella et al. Mar 1995 A
5400568 Kanemitsu et al. Mar 1995 A
5405478 Richardson et al. Apr 1995 A
5405629 Marnocha et al. Apr 1995 A
5412924 Ausnit May 1995 A
5415904 Takubo et al. May 1995 A
5425216 Ausnit Jun 1995 A
5425825 Rasko et al. Jun 1995 A
5431760 Donovan Jul 1995 A
5435864 Machacek et al. Jul 1995 A
5442837 Morgan Aug 1995 A
5448807 Herrington, Jr. Sep 1995 A
5470156 May Nov 1995 A
5482375 Richardson et al. Jan 1996 A
5489252 May Feb 1996 A
5492411 May Feb 1996 A
5505037 Terminella et al. Apr 1996 A
5509735 May Apr 1996 A
5511884 Bruno et al. Apr 1996 A
5519982 Herber et al. May 1996 A
5525363 Herber et al. Jun 1996 A
5542902 Richison et al. Aug 1996 A
5551127 May Sep 1996 A
5551208 Van Erden Sep 1996 A
5557907 Malin et al. Sep 1996 A
5558613 Tilman et al. Sep 1996 A
5561966 English Oct 1996 A
5564259 Stolmeier Oct 1996 A
5573614 Tilman et al. Nov 1996 A
5582853 Marnocha et al. Dec 1996 A
5592802 Malin et al. Jan 1997 A
5603202 Hanagata Feb 1997 A
5613934 May Mar 1997 A
5628566 Schreiter May 1997 A
5647671 May Jul 1997 A
5651462 Simonsen et al. Jul 1997 A
5669715 Dobreski et al. Sep 1997 A
5672234 Rodenstein et al. Sep 1997 A
5682730 Dobreski Nov 1997 A
5706635 Simmons Jan 1998 A
5722128 Toney et al. Mar 1998 A
5725312 May Mar 1998 A
5782733 Yeager Jul 1998 A
5788378 Thomas Aug 1998 A
5823933 Yeager Oct 1998 A
5833791 Bryniarski et al. Nov 1998 A
5906438 Laudenberg May 1999 A
5924173 Dobreski et al. Jul 1999 A
5956924 Thieman Sep 1999 A
5964532 St. Phillips et al. Oct 1999 A
6044621 Malin et al. Apr 2000 A
6131248 Tomic Oct 2000 A
6131369 Ausnit Oct 2000 A
6138436 Malin et al. Oct 2000 A
6138439 McMahon et al. Oct 2000 A
6161271 Schreiter Dec 2000 A
6212857 Van Erden Apr 2001 B1
6216423 Thieman Apr 2001 B1
6273607 Buchman Aug 2001 B1
6279298 Thomas et al. Aug 2001 B1
6286189 Provan et al. Sep 2001 B1
6286999 Cappel et al. Sep 2001 B1
6289561 Provan et al. Sep 2001 B1
6290390 Buchman Sep 2001 B1
6292986 Provan et al. Sep 2001 B1
6293896 Buchman Sep 2001 B1
6327754 Belmont et al. Dec 2001 B1
6327837 Van Erden Dec 2001 B1
6347437 Provan et al. Feb 2002 B2
6347885 Buchman Feb 2002 B1
6360513 Strand et al. Mar 2002 B1
6363692 Thieman Apr 2002 B2
6412254 Tilman et al. Jul 2002 B1
6419391 Thomas Jul 2002 B2
6427421 Belmont et al. Aug 2002 B1
6880973 Schneider et al. Apr 2005 B2
20010005973 Schneider et al. Jul 2001 A1
20010045083 McMahon et al. Nov 2001 A1
20030202717 Schneider et al. Oct 2003 A1
20030202720 VandenHeuvel et al. Oct 2003 A1
20030219173 Schneider Nov 2003 A1
20040179753 Schneider et al. Sep 2004 A1
Foreign Referenced Citations (6)
Number Date Country
0302144 Feb 1989 EP
1 026 077 Aug 2000 EP
WO 0153158 Jul 2001 WO
WO 0153158 Jul 2001 WO
WO 0212064 Feb 2002 WO
WO 0213649 Feb 2002 WO
Related Publications (1)
Number Date Country
20040026423 A1 Feb 2004 US