US20040150221A1 - Tamper evident seal - Google Patents
Tamper evident seal Download PDFInfo
- Publication number
- US20040150221A1 US20040150221A1 US10/354,532 US35453203A US2004150221A1 US 20040150221 A1 US20040150221 A1 US 20040150221A1 US 35453203 A US35453203 A US 35453203A US 2004150221 A1 US2004150221 A1 US 2004150221A1
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- US
- United States
- Prior art keywords
- layer
- tamper resistant
- seal
- anchoring
- resistant layer
- 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
Links
- 238000004873 anchoring Methods 0.000 claims abstract description 61
- 235000013361 beverage Nutrition 0.000 claims abstract description 8
- 235000013305 food Nutrition 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 17
- 230000006378 damage Effects 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 abstract description 3
- 230000001066 destructive effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 235000011496 sports drink Nutrition 0.000 description 2
- 208000035018 Product tampering Diseases 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 235000008960 ketchup Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
- G09F3/0292—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time tamper indicating labels
-
- 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
- B65D55/00—Accessories for container closures not otherwise provided for
- B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
- B65D55/06—Deformable or tearable wires, strings, or strips; Use of seals, e.g. destructible locking pins
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
Definitions
- the present invention is generally related to tamper evident seals.
- the present invention is related to tamper evident seals that combine both physical destruction and optically apparent change characteristics for the indication of tampering or opening of an article to which the seal is applied, such as a food or beverage container.
- tamper evident seals operate by one of two operating principles or mechanisms.
- the first is a seal that provides an easily visible indication of tampering.
- the color of the label or another aspect of the appearance of the label may change when an attempt is made to remove it.
- some labels may leave a footprint when removed, such as a pattern or text such as the word “void”, or a combination of both text and a pattern.
- An important feature is that, to the observer, the presence of a new color or pattern is not reversible, and therefore indicates that an attempt was made to remove the seal.
- These labels are generally referred to as tamper evident labels.
- Another operating principle is physical destruction of the seal or label. This can result from, for example, an attempt to peel or remove the label, or to open the underlying container to which the seal is attached, causing partial destruction, disintegration or deterioration of the seal.
- some labels are designed to shred, chip or crack upon removal. These labels are generally referred to as tamper resistant labels.
- package containers may have seals to provide evidence of an attempt to open the container. Such seals are also useful to indicate opening of the containers that may occur, for example, during transit.
- the present invention solves the aforementioned problems and provides a seal that fills previously unmet needs.
- a seal comprising a tamper resistant layer.
- the seal further includes an anchoring layer covered and concealed by the tamper resistant layer.
- the tamper resistant layer is releaseably adhered to the anchoring layer and, upon at least partial physical destruction of the tamper resistant layer and releasing of the tamper resistant layer from the anchoring layer, the anchoring layer displays a color that is visually distinct from the tamper resistant layer.
- a closure for a container comprises an upper portion, a lower portion for closing engagement to the upper portion and a tamper resistant seal for secure attachment to the upper portion and the lower portion.
- the tamper resistant seal comprises a plurality of sealing layers, wherein when the upper portion and the lower portion of the container are opened with respect to one another, at least one of the sealing layers at least partially destructs to reveal at least a portion of another of the sealing layers that is visually distinct from and disposed beneath the partially destructed sealing layer.
- FIG. 1 is a schematic view of a tamper evident seal in accordance with one aspect of the invention
- FIG. 2 is an exploded view illustrating the layers of the tamper evident seal in accordance with one aspect of the present invention
- FIG. 3 is a schematic view illustrating the tamper evident seal of FIG. 1 used on a container
- FIG. 4 is a front view of a tamper evident seal applied to a product container prior to an attempted opening
- FIG. 5 is a front view of a tamper evident seal applied to a product container following an attempted opening and reclosing.
- Seal 10 generally includes a tamper resistant layer 12 which covers and conceals an anchoring or anchor layer 14 .
- anchoring layer 14 When placed on a product, anchoring layer 14 is not visible and can only become visible when tamper resistant layer 12 is broken, chipped, cracked, torn or otherwise physically destructed.
- Tamper resistant layer 12 on the embodiment shown, is of a generally oval shape. However, any suitable shape is contemplated. Tamper resistant layer 12 preferably is constructed of a material that will fracture easily in order to show signs of product tampering and to prevent one piece removal.
- tamper resistant layer 12 includes vinyl.
- the tamper resistant layer is a thermal transfer tamper resistant vinyl with a matte white or substantially white finish and having an acrylic adhesive.
- the Brady B-351 Thermal Transfer Printable Tamper-Resistant White Vinyl Label Stock available from Brady Worldwide, Inc., is an example of a suitable material for the tamper resistant layer.
- the preferred material has an average tack value of about 45.4 oz (1288 g) as measured by ASTM D 2979 on a PolykenTM Probe Tack and has an average tensile strength of approximately 6.3 lbs/in (110N/100 mm) as measured by ASTM D1000 with an elongation of approximately 2%.
- Tamper resistant layer 12 in general completely covers anchoring layer 14 .
- anchoring layer 14 has a zoned die-cut format.
- Anchoring layer 14 in general, will have higher adhesive bonding and strength characteristics than tamper resistant layer 12 , and the substrate strength of anchoring layer 14 will provide appropriate anchorage of layer 14 to any container to which it is applied.
- anchoring layer 14 includes polyethylene. Brady B-656 polyethylene face sheet, also available from Brady Worldwide Inc., has been found to be a suitable material.
- seal 10 would be applied such that a portion, approximately half of both tamper resistant layer 12 and anchoring layer 14 are positioned on either side of center line 16 , which is representative of the border of the container opening to which seal 10 will be applied.
- the shape of anchoring layer 14 is shown in a chevron-type configuration. However, any suitable die-cut, including polygonal, key-hole or cross shape, is contemplated. Since layer 14 resides under tamper resistant layer 12 , layer 14 can be considered to be an underlayer.
- FIG. 2 shows an exploded view illustrating the layers of the tamper evident seal in accordance with one aspect of the present invention.
- Tamper resistant layer 12 covers anchoring layer 14 .
- Anchoring layer 14 has a topcoat 18 .
- Topcoat 18 generally has a color that is visually distinct from the color of the tamper resistant layer 12 and is generally shaped in the same zoned die-cut as anchoring layer 14 .
- Topcoat 18 preferably includes a contrasting color from tamper resistant layer 12 . For example, if tamper resistant layer is substantially white, it is contemplated that anchoring layer (because of topcoat 18 ) will be substantially non-white or colored.
- topcoat 18 could simply be clear. The key requirement is that the observer can readily perceive the difference between the two layers.
- anchoring layer 14 may itself be colored, for example, by starting out with a colored cast film. In the case where there is a colored anchoring layer 14 , topcoat 18 may be eliminated.
- topcoat 18 is UV printed.
- Anchor layer 14 will have an adhesive 20 , again preferably in the same zoned die-cut format as anchor layer 14 , in order to secure anchor layer 14 to a package or container suitable to the application.
- Disposed between the tamper resistant layer 12 and the colored topcoat 18 of anchoring layer 14 is a release coating 22 .
- release coating 22 is a clear UV printed release coat that is shaped in a similar zoned die-cast shape as anchor layer 14 .
- An example of a preferred material for the release coating 22 is silicon. Release coating 22 permits the portion covering the release coat by tamper resistant layer 12 to peel or break-away.
- FIG. 3 a schematic view illustrating the tamper evident seal of FIG. 1 used on a container opening is shown.
- FIG. 3 illustrates tamper evident seal 10 in one application of the present invention.
- seal 10 is applied along a junction 24 separating an opening portion 26 and a base portion 28 of a cap 30 .
- Cap 30 may be used on a food and/or beverage container such as, for example, a plastic cap of a sports drink bottle, ketchup bottles, etc.
- cap 30 shown is a “flip-top” type cap, it is contemplated that any type of container opening may be suitably employed including, for example, rotating cap openings, hinged flip tops, screw-off caps, and press-fit or interference-fit caps, among others.
- Seal 10 is placed on cap 30 such that a portion of tamper resistant layer 12 and anchoring layer 14 is present on both sides of junction 24 .
- Seal 10 provides protection in several ways. First, if a direct attempt to peel off seal 10 is made, portions of tamper resistant layer 12 will break, chip away and/or show obvious signs of physical destruction, or at least partial physical destruction. Also, as in this example, lip 32 is flipped up in a known manner. For example, when opening up a sports drink or other beverage container, a lifting force is created about joint 34 and tamper resistant layer 12 will tend to break along the area covering anchoring layer 14 since a release coating ( 22 of FIG. 2) is also provided around the same zoned die-cut area.
- FIG. 4 is a front view of a tamper evident seal applied to a product container prior to an attempted opening.
- FIG. 4 illustrates tamper evident seal 10 applied to an unopened container and thus illustrates an untampered condition. In such an unopened, untampered state, only tamper evident seal 10 is visible, thereby indicating that no tampering or opening of cap 30 has occurred. Tamper resistant layer 12 can be said to be in a pre-tearing position. Again, seal 10 is applied along junction 24 such that any opening of the cap will stress seal 10 generally along junction 24 .
- FIG. 5 is a front view of a tamper evident seal applied to a product container after an attempted opening and reclosing.
- FIG. 5 illustrates one embodiment of the result of opening cap 30 and reclosing it.
- Seal 10 operates generally on the principle that an attempted or inadvertent opening will stress the tamper resistant layer. Because anchor layer 14 is stronger, that is, more resistant to those same stresses, tamper resistant layer 12 will break or otherwise at least partially destruct. First, portions of tamper resistant layer 12 have chipped away or been broken to reveal missing portions 40 a/b and visible cracks 42 a/b .
- tamper resistant layer 12 The relatively brittle characteristics of tamper resistant layer 12 will cause these cracks and breakage. Additionally, color topcoat 18 of the anchor layer 14 is revealed through tamper resistant layer 12 . In operation, because of the release layer between the color topcoat 18 and tamper resistant layer 12 , those portions of tamper resistant layer 12 positioned over the zoned, die-cut area of anchor layer 14 and color topcoat 18 will be more likely to peel away, break off or otherwise be physically removed from seal 10 .
- moving cap 30 with respect to the container at least partially, physically destructs tamper resistant layer 12 such that damage to the tamper resistant layer 12 is observable and reveals at least a portion of the color topcoat 18 of the anchoring layer 14 through breaks in the tamper resistant layer 12 . Therefore, tearing or partial destruction of seal 10 cannot be reversed to a pre-tearing condition such that the color topcoat 18 of the anchoring underlayer is not visible. This is because, upon unsealing, the seal cannot be covertly resealed without these visible indications of the unsealing being revealed. Thus, partial destruction of the covering layer cannot be reversed to a pre-tearing condition such that the anchoring underlayer is not visible.
- the tamper resistant layer cannot reconceal the colored topcoat of the anchoring layer once the colored topcoat is exposed through the tamper resistant layer breaks.
- seal 10 can be said to leave a “footprint” and change in appearance when seal 10 is disturbed, as during an attempted break of the seal to open an underlying product.
- Seal 10 accomplishes the change of appearance through the use of multiple layers, and the footprint itself is the presentation of the colored underlayer.
- the tamper resistant layer is unalterably changed as partially represented by its cracks, breaks and tears.
- the seal as a whole is also changed, with the visibility of the colored underlayer coming through when the seal has been tampered with. Therefore, as a whole, the seal of the present invention uses a mix of tamper resistant layers and stronger anchoring layers to accomplish the functionality of a tamper evident seal.
- seal 10 is usable in a number of different products.
- a closure for a container may include an upper portion, a lower portion for closing engagement to the upper portion, and seal 10 .
- Seal 10 is used for secure attachment to the upper portion and the lower portion, the seal including a plurality of sealing layers.
- the seal including a plurality of sealing layers.
- seal 10 When the upper portion and the lower portion of the container are opened with respect to one another, at least one of the sealing layers at least partially destructs to reveal another of the sealing layers that is visually distinct from and disposed beneath the partially destructed sealing layer.
- Many other products and applications may include seal 10 for a variety of tamper evident applications and general securing of products and product packages.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
A tamper evident seal for use as an indicator of tampering of, for example, a food or beverage container, is disclosed. The seal includes a tamper resistant layer having physically destructive characteristics that provide a visual indication when the tamper resistant layer is disturbed. An anchoring layer having a topcoat is covered by the tamper resistant layer, the topcoat having a color that is visually distinct from the tamper resistant layer. Upon a breaking of the tamper resistant layer, the colored topcoat of the anchoring layer is visible through the tamper resistant layer to indicate tampering of the seal. The seal is useful to indicate whether a closure of a container, such as a beverage bottle, has been opened or partially opened.
Description
- The present invention is generally related to tamper evident seals. In particular, the present invention is related to tamper evident seals that combine both physical destruction and optically apparent change characteristics for the indication of tampering or opening of an article to which the seal is applied, such as a food or beverage container.
- The use of tamper evident seals is prominent, particularly in the food and beverage consumer goods industry. Shrink-wrap seals are found on many products where evidence of tampering or mishandling of the goods may be made apparent. The need continues for developing seals that are effective as indicators of tampering and as well as minimizing materials and costs associated with the seals.
- Many tamper evident seals, or alternatively labels, operate by one of two operating principles or mechanisms. The first is a seal that provides an easily visible indication of tampering. For example, the color of the label or another aspect of the appearance of the label may change when an attempt is made to remove it. Also, some labels may leave a footprint when removed, such as a pattern or text such as the word “void”, or a combination of both text and a pattern. An important feature is that, to the observer, the presence of a new color or pattern is not reversible, and therefore indicates that an attempt was made to remove the seal. These labels are generally referred to as tamper evident labels.
- Another operating principle is physical destruction of the seal or label. This can result from, for example, an attempt to peel or remove the label, or to open the underlying container to which the seal is attached, causing partial destruction, disintegration or deterioration of the seal. For example, some labels are designed to shred, chip or crack upon removal. These labels are generally referred to as tamper resistant labels.
- In the food and beverage industry, in particular, package containers may have seals to provide evidence of an attempt to open the container. Such seals are also useful to indicate opening of the containers that may occur, for example, during transit.
- Prior solutions have included a single tamper evident or resistant characteristic. It has been found that a need exists for a seal that includes multiple tamper evident qualities such as an obviously torn label as well as the appearance of a readily visible or colored indicator. It would be beneficial to have, for example, in a food product package or container, a seal that both irreversibly tears as well as provides a strong visual indication of an attempt to open the container.
- Therefore, it would be desirable to have a seal having multiple tamper evident or resistant characteristics to provide evidence of tampering or opening of a container or product.
- The present invention solves the aforementioned problems and provides a seal that fills previously unmet needs.
- In one embodiment, a seal comprising a tamper resistant layer is disclosed. The seal further includes an anchoring layer covered and concealed by the tamper resistant layer. The tamper resistant layer is releaseably adhered to the anchoring layer and, upon at least partial physical destruction of the tamper resistant layer and releasing of the tamper resistant layer from the anchoring layer, the anchoring layer displays a color that is visually distinct from the tamper resistant layer.
- In another embodiment, a closure for a container is disclosed. The closure comprises an upper portion, a lower portion for closing engagement to the upper portion and a tamper resistant seal for secure attachment to the upper portion and the lower portion. The tamper resistant seal comprises a plurality of sealing layers, wherein when the upper portion and the lower portion of the container are opened with respect to one another, at least one of the sealing layers at least partially destructs to reveal at least a portion of another of the sealing layers that is visually distinct from and disposed beneath the partially destructed sealing layer.
- Various other features, objects and advantages of the present invention will be made apparent from the following detailed description and the drawings.
- The drawings illustrate a preferred mode presently contemplated for carrying out the invention.
- In the drawings:
- FIG. 1 is a schematic view of a tamper evident seal in accordance with one aspect of the invention;
- FIG. 2 is an exploded view illustrating the layers of the tamper evident seal in accordance with one aspect of the present invention;
- FIG. 3 is a schematic view illustrating the tamper evident seal of FIG. 1 used on a container;
- FIG. 4 is a front view of a tamper evident seal applied to a product container prior to an attempted opening; and
- FIG. 5 is a front view of a tamper evident seal applied to a product container following an attempted opening and reclosing.
- Referring now to FIG. 1, a schematic view of a tamper
evident seal 10 in accordance with one aspect of the invention is shown.Seal 10 generally includes a tamperresistant layer 12 which covers and conceals an anchoring oranchor layer 14. When placed on a product,anchoring layer 14 is not visible and can only become visible when tamperresistant layer 12 is broken, chipped, cracked, torn or otherwise physically destructed. Tamperresistant layer 12, on the embodiment shown, is of a generally oval shape. However, any suitable shape is contemplated. Tamperresistant layer 12 preferably is constructed of a material that will fracture easily in order to show signs of product tampering and to prevent one piece removal. Preferably, tamperresistant layer 12 includes vinyl. - In one preferred embodiment, the tamper resistant layer is a thermal transfer tamper resistant vinyl with a matte white or substantially white finish and having an acrylic adhesive. The Brady B-351 Thermal Transfer Printable Tamper-Resistant White Vinyl Label Stock, available from Brady Worldwide, Inc., is an example of a suitable material for the tamper resistant layer. The preferred material has an average tack value of about 45.4 oz (1288 g) as measured by ASTM D 2979 on a Polyken™ Probe Tack and has an average tensile strength of approximately 6.3 lbs/in (110N/100 mm) as measured by ASTM D1000 with an elongation of approximately 2%.
- Tamper
resistant layer 12 in general completely coversanchoring layer 14. Preferably,anchoring layer 14 has a zoned die-cut format. Anchoringlayer 14, in general, will have higher adhesive bonding and strength characteristics than tamperresistant layer 12, and the substrate strength ofanchoring layer 14 will provide appropriate anchorage oflayer 14 to any container to which it is applied. - In one preferred embodiment,
anchoring layer 14 includes polyethylene. Brady B-656 polyethylene face sheet, also available from Brady Worldwide Inc., has been found to be a suitable material. - In operation,
seal 10 would be applied such that a portion, approximately half of both tamperresistant layer 12 andanchoring layer 14 are positioned on either side ofcenter line 16, which is representative of the border of the container opening to whichseal 10 will be applied. The shape ofanchoring layer 14 is shown in a chevron-type configuration. However, any suitable die-cut, including polygonal, key-hole or cross shape, is contemplated. Sincelayer 14 resides under tamperresistant layer 12,layer 14 can be considered to be an underlayer. - FIG. 2 shows an exploded view illustrating the layers of the tamper evident seal in accordance with one aspect of the present invention. In FIG. 2, the layers of
seal 10, or “sealing layers”, are shown. Tamperresistant layer 12 coversanchoring layer 14. Anchoringlayer 14 has atopcoat 18. Topcoat 18 generally has a color that is visually distinct from the color of the tamperresistant layer 12 and is generally shaped in the same zoned die-cut asanchoring layer 14. Topcoat 18 preferably includes a contrasting color from tamperresistant layer 12. For example, if tamper resistant layer is substantially white, it is contemplated that anchoring layer (because of topcoat 18) will be substantially non-white or colored. Alternatively,topcoat 18 could simply be clear. The key requirement is that the observer can readily perceive the difference between the two layers. Moreover, as an alternative, anchoringlayer 14 may itself be colored, for example, by starting out with a colored cast film. In the case where there is acolored anchoring layer 14,topcoat 18 may be eliminated. - In a preferred embodiment,
topcoat 18 is UV printed.Anchor layer 14 will have an adhesive 20, again preferably in the same zoned die-cut format asanchor layer 14, in order to secureanchor layer 14 to a package or container suitable to the application. Disposed between the tamperresistant layer 12 and thecolored topcoat 18 of anchoringlayer 14 is arelease coating 22. Preferably,release coating 22 is a clear UV printed release coat that is shaped in a similar zoned die-cast shape asanchor layer 14. An example of a preferred material for therelease coating 22 is silicon.Release coating 22 permits the portion covering the release coat by tamperresistant layer 12 to peel or break-away. Since the adhesive used with tamperresistant layer 12 that adheres to a container or other product is stronger than the adhesion of therelease coating 22, when breakage occurs, it is most likely to occur along the shape of the zoned die-cut. In this manner, when portions of tamperresistant layer 12 break away over an area covering thecolored topcoat 18 ofanchor layer 14, that colored portion will be exposed and will be visible to provide a visual indication of tampering ofseal 10. - Referring now to FIG. 3, a schematic view illustrating the tamper evident seal of FIG. 1 used on a container opening is shown. FIG. 3 illustrates tamper
evident seal 10 in one application of the present invention. In this application,seal 10 is applied along ajunction 24 separating anopening portion 26 and abase portion 28 of acap 30.Cap 30 may be used on a food and/or beverage container such as, for example, a plastic cap of a sports drink bottle, ketchup bottles, etc. Although thecap 30 shown is a “flip-top” type cap, it is contemplated that any type of container opening may be suitably employed including, for example, rotating cap openings, hinged flip tops, screw-off caps, and press-fit or interference-fit caps, among others. -
Seal 10 is placed oncap 30 such that a portion of tamperresistant layer 12 andanchoring layer 14 is present on both sides ofjunction 24.Seal 10 provides protection in several ways. First, if a direct attempt to peel offseal 10 is made, portions of tamperresistant layer 12 will break, chip away and/or show obvious signs of physical destruction, or at least partial physical destruction. Also, as in this example,lip 32 is flipped up in a known manner. For example, when opening up a sports drink or other beverage container, a lifting force is created about joint 34 and tamperresistant layer 12 will tend to break along the area coveringanchoring layer 14 since a release coating (22 of FIG. 2) is also provided around the same zoned die-cut area. - FIG. 4 is a front view of a tamper evident seal applied to a product container prior to an attempted opening. FIG. 4 illustrates tamper
evident seal 10 applied to an unopened container and thus illustrates an untampered condition. In such an unopened, untampered state, only tamperevident seal 10 is visible, thereby indicating that no tampering or opening ofcap 30 has occurred. Tamperresistant layer 12 can be said to be in a pre-tearing position. Again,seal 10 is applied alongjunction 24 such that any opening of the cap will stress seal 10 generally alongjunction 24. - FIG. 5 is a front view of a tamper evident seal applied to a product container after an attempted opening and reclosing. FIG. 5 illustrates one embodiment of the result of opening
cap 30 and reclosing it. As illustrated, there is clear indication of tampering.Seal 10 operates generally on the principle that an attempted or inadvertent opening will stress the tamper resistant layer. Becauseanchor layer 14 is stronger, that is, more resistant to those same stresses, tamperresistant layer 12 will break or otherwise at least partially destruct. First, portions of tamperresistant layer 12 have chipped away or been broken to reveal missingportions 40 a/b andvisible cracks 42 a/b. The relatively brittle characteristics of tamperresistant layer 12 will cause these cracks and breakage. Additionally,color topcoat 18 of theanchor layer 14 is revealed through tamperresistant layer 12. In operation, because of the release layer between thecolor topcoat 18 and tamperresistant layer 12, those portions of tamperresistant layer 12 positioned over the zoned, die-cut area ofanchor layer 14 andcolor topcoat 18 will be more likely to peel away, break off or otherwise be physically removed fromseal 10. In this manner, movingcap 30 with respect to the container at least partially, physically destructs tamperresistant layer 12 such that damage to the tamperresistant layer 12 is observable and reveals at least a portion of thecolor topcoat 18 of theanchoring layer 14 through breaks in the tamperresistant layer 12. Therefore, tearing or partial destruction ofseal 10 cannot be reversed to a pre-tearing condition such that thecolor topcoat 18 of the anchoring underlayer is not visible. This is because, upon unsealing, the seal cannot be covertly resealed without these visible indications of the unsealing being revealed. Thus, partial destruction of the covering layer cannot be reversed to a pre-tearing condition such that the anchoring underlayer is not visible. In addition, upon tearing of the covering layer to produce tears in the covering layer, at least a portion of the anchoring underlayer is irreversibly visible through the tears in the covering layer. Finally, the tamper resistant layer cannot reconceal the colored topcoat of the anchoring layer once the colored topcoat is exposed through the tamper resistant layer breaks. - In one respect, seal10 can be said to leave a “footprint” and change in appearance when
seal 10 is disturbed, as during an attempted break of the seal to open an underlying product.Seal 10 accomplishes the change of appearance through the use of multiple layers, and the footprint itself is the presentation of the colored underlayer. The tamper resistant layer is unalterably changed as partially represented by its cracks, breaks and tears. The seal as a whole is also changed, with the visibility of the colored underlayer coming through when the seal has been tampered with. Therefore, as a whole, the seal of the present invention uses a mix of tamper resistant layers and stronger anchoring layers to accomplish the functionality of a tamper evident seal. - It is contemplated that
seal 10 is usable in a number of different products. For example, a closure for a container may include an upper portion, a lower portion for closing engagement to the upper portion, andseal 10.Seal 10 is used for secure attachment to the upper portion and the lower portion, the seal including a plurality of sealing layers. When the upper portion and the lower portion of the container are opened with respect to one another, at least one of the sealing layers at least partially destructs to reveal another of the sealing layers that is visually distinct from and disposed beneath the partially destructed sealing layer. Many other products and applications may includeseal 10 for a variety of tamper evident applications and general securing of products and product packages. - The present invention has been described in terms of the preferred embodiment, and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
Claims (23)
1. A seal comprising:
a tamper resistant layer; and
an anchoring layer covered and concealed by the tamper resistant layer;
wherein the tamper resistant layer is releasably adhered to the anchoring layer and, upon at least partial physical destruction of the tamper resistant layer and releasing of the tamper resistant layer from the anchoring layer, the anchoring layer displays a color that is visually distinct from the tamper resistant layer.
2. The seal of claim 1 further comprising a topcoat applied to the anchoring layer, the topcoat having the visually distinct color that is visible, upon the at least partial physical destruction of the tamper resistant layer, through a plurality of breaks in the tamper resistant layer to indicate a tampering with the seal.
3. The seal of claim 2 further comprising a release coating disposed between the tamper resistant layer and the colored topcoat of the anchoring layer, and wherein the release coating permits the tamper resistant layer to be released from the colored topcoat of the anchoring layer in order to expose the colored topcoat through the tamper resistant layer breaks.
4. The seal of claim 2 wherein the colored topcoat is UV printed to the anchoring layer.
5. The seal of claim 3 wherein the release coating is UV cured and is applied to the colored topcoat.
6. The seal of claim 1 wherein the anchoring layer has a zoned die cut format.
7. The seal of claim 2 wherein the tamper resistant layer is capable of fracturing to expose the colored topcoat of the anchoring layer.
8. The seal of claim 1 wherein the tamper resistant layer is larger than and completely covers the anchoring layer.
9. The seal of claim 1 wherein the tamper resistant layer includes vinyl.
10. The seal of claim 2 wherein the tamper resistant layer cannot reconceal the colored topcoat of the anchoring layer once the colored topcoat is exposed through the tamper resistant layer breaks.
11. A multiple layer tamper resistant seal comprising:
a layer covering an anchoring underlayer;
wherein, upon tearing of the covering layer to produce tears in the covering layer, at least a portion of the anchoring underlayer is irreversibly visible through the tears in the covering layer.
12. The seal of claim 11 wherein partial destruction of the covering layer cannot be reversed to a pre-tearing condition such that the anchoring underlayer is not visible.
13. The seal of claim 11 wherein the tamper resistant layer is substantially white.
14. The seal of claim 11 wherein the anchoring underlayer is substantially non-white.
15. The seal of claim 11 wherein the anchoring underlayer is substantially colored.
16. The seal of claim 11 wherein the anchoring underlayer has a zoned die cut format.
17. The seal of claim 11 wherein the anchoring underlayer includes polyethylene.
18. A seal for use with a container, the seal comprising:
a tamper resistant layer having a tamper resistant layer adhesive;
an anchoring layer having a topcoat covered by the tamper resistant layer, the topcoat having a color that is visually distinct from the tamper resistant layer;
a release coating disposed between the tamper resistant layer adhesive and the topcoat of the anchoring layer to permit the tamper resistant layer to peel away from the anchoring layer; and
an adhesive to adhere the anchoring layer to the container;
wherein upon a breaking of the tamper resistant layer, at least a portion of the colored topcoat of the anchoring layer is visible to indicate tampering of the seal.
19. The seal of claim 18 wherein the anchoring layer has a zoned die cut format.
20. A container in combination with a seal, the combination comprising:
a container for use with at least one of a food and a beverage, the container having a closure;
a seal applied to the closure, the seal comprising:
a tamper resistant layer;
an anchoring layer covered and concealed by the tamper resistant layer;
wherein the tamper resistant layer is releaseably adhered to the anchoring layer and, upon at least partial physical destruction of the tamper resistant layer, the anchoring layer displays a color that is visually distinct from the tamper resistant layer and
wherein moving the closure with respect to the container at least partially physically destructs the tamper resistant layer such that damage to the tamper resistant layer is observable and releases the tamper resistant layer from the anchoring layer to reveal at least a portion of the anchoring layer through breaks in the tamper resistant layer.
21. The container of claim 20 wherein the anchoring layer has a zoned die cut format.
22. A tamper resistant seal comprising: a plurality of sealing layers, wherein at least one of the sealing layers at least partially destructs to reveal another of the sealing layers that is visually distinct from and disposed beneath the partially destructed sealing layer.
23. A closure for a container, the closure comprising:
an upper portion;
a lower portion for closing engagement to the upper portion; and
a tamper resistant seal for secure attachment to the upper portion and the lower portion, the tamper resistant seal comprising a plurality of sealing layers, wherein when the upper portion and the lower portion of the container are opened with respect to one another, at least one of the sealing layers at least partially destructs to reveal at least a portion of another of the sealing layers that is visually distinct from and disposed beneath the partially destructed sealing layer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/354,532 US20040150221A1 (en) | 2003-01-30 | 2003-01-30 | Tamper evident seal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/354,532 US20040150221A1 (en) | 2003-01-30 | 2003-01-30 | Tamper evident seal |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040150221A1 true US20040150221A1 (en) | 2004-08-05 |
Family
ID=32770380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/354,532 Abandoned US20040150221A1 (en) | 2003-01-30 | 2003-01-30 | Tamper evident seal |
Country Status (1)
Country | Link |
---|---|
US (1) | US20040150221A1 (en) |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BRADY WORLDWIDE, INC., WISCONSIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BROWN, JAMES T.;REEL/FRAME:013720/0651 Effective date: 20030124 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |