Patent Application
20200031526
The present invention relates to a protective label that can be applied to an article to reduce or prevent damage to same.
This section is intended to introduce the reader to various aspects of art that may be related to various aspects of the present invention, which are described and/or claimed below. This discussion is believed to be helpful in providing the reader with background information to facilitate a better understanding of various aspects of the present invention. Accordingly, it should be understood that these statements are to be read in this light, and not as admissions of prior art.
Labels are commonly used with many different types of articles that contain (or are designed to contain) various products. Such containers may generally be any receptacle or enclosure for holding a product used in storage, packaging, and shipping, or during its use. Such articles may include, but are not limited to bottles, jars, cans, tubs, boxes, etc. Further, such articles are often made from materials which are subject to damage or breakage, such as glass or polymer materials such as PET or HDPE.
Articles that are made from materials that can be damaged and/or break present certain drawbacks. For example, consumers may be dissatisfied by glass breakage associated with dropped bottles. In particular, the consumer perception of package quality can be diminished when confronted with articles (such as glass bottles) that are broken, such as during transit to the retail environment—or if bottles are broken due to being dropped after purchase. Current methods of reducing or preventing such damage are inadequate.
Certain exemplary aspects of the invention are set forth below. It should be understood that these aspects are presented merely to provide the reader with a brief summary of certain forms the invention might take and that these aspects are not intended to limit the scope of the invention. Indeed, the invention may encompass a variety of aspects that may not be explicitly set forth below.
Various aspects of the embodiments of the protective label described herein overcome the drawbacks of the prior art. More specifically, aspects of the present invention provide a protective label that—due to its positioning relative to an article with which it is associated, or the materials comprising the label, or a combination of materials and positioning—reduces or prevents damage and/or breakage to the article to which it is applied (for example, when a glass bottle is dropped).
To that end, one embodiment of the present invention provides a labeled article comprising a label and an article, the article having a top end, a bottom end, a bottom surface, and at least one side surface, wherein the at least one side surface extends between the top end and the bottom end of the article. In this embodiment, the label is positioned around a lower portion of the side surface of the article to confront said side surface, and does not extend past the bottom end of the article.
Another embodiment of the present invention provides a labeled article comprising a label and an article, the article having a top end, a bottom end, and at least one side surface, wherein the at least one side surface extends between the top end and the bottom end of the article. The label is positioned around a portion of the side surface of said article and does not extend to the bottom end of said article, such that a lower portion of said side surface is exposed below a bottom edge of said label. In this embodiment, the label includes a machine direction-oriented film and an adhesive positioned between the label and the article, and the label is heat shrunk to the article.
Another embodiment of the present invention provides a labeled article comprising a label and an article, the article having a top end, a bottom end, a bottom surface, and at least one side surface, wherein the at least one side surface extends between the top end and the bottom end of the article. The label is positioned around a lower portion of the side surface of said article and extends past the bottom end of the article, such that said label confronts the lower portion of the side surface and at least a portion of a bottom surface of the article. Further, in this embodiment, the label extends from the bottom end of the article toward the top end of the article less than 50% of the length of the article between the bottom end to the top end.
Another embodiment of the present invention provides a labeled article comprising a label and an article, the article having a top end, a bottom end, and at least one side surface, wherein the at least one side surface extends between the top end and the bottom end of the article. The label is positioned around a lower portion of the side surface of the article and extends past the bottom end of the article, such that the label confronts the lower portion of the side surface and at least a portion of a bottom surface of the article. Further, the label includes a machine direction-oriented film and an adhesive positioned between said label and said article, and the label is heat shrunk to the article.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the general description of the invention given above and the detailed description of the embodiments given below, serve to explain the principles of the present invention.
One or more specific embodiments of the present invention will be described below. In an effort to provide a concise description of these embodiments, all features of an actual implementation may not be described in the specification. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another. Moreover, it should be appreciated that such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
As described above, various aspects of the embodiments of the protective label described herein overcome the drawbacks of the prior art. More specifically, aspects of the present invention provide a protective label that—due to its positioning relative to an article with which it is associated, or the materials comprising the label, or a combination of materials and positioning —reduces or prevents damage and/or breakage to the article to which it is applied (for example, when a glass bottle is dropped).
To that end, and referring now to
In the illustrated embodiment of
As can be seen in the illustrated embodiment, the label 10 extends upward from the junction 38 of the side wall and the bottom surface 18 toward the top end 14 of the article 12. However, the label 10 does not extend fully toward the top end 14 of the article 12, such that the substantial portion of the side surface 20 is confronted by the label 10. Rather, largely a segment of the lower portion of the article 12 is confronted by the label 10. In one such embodiment, the label 10 may extend from the bottom end 16 of the article 12 toward the top end 14 of the article 12 less than 50% of the length of the article 12 between the bottom end 16 to the top end 14. In another embodiment, the label 10 may extend from the bottom end 16 of the article 12 toward the top end 14 of the article 12 less than 20% of the length of the article 12 between the bottom end 16 to the top end 14. And in yet another embodiment, the label 10 may extend from the bottom end 16 of the article 12 toward the top end 14 of the article 12 less than 12% of the length of the article 12 between the bottom end 16 to the top end 14. In yet another embodiment, the label 10 may extend between ½″ to 1″ from the bottom end 16 of the article 12 toward the top end 14 of the article 12.
While the coverage of the lower portion of the article 12 with respect to the label 10 is described above with respect to extension of the label 10 toward the top end 14 of the article 12 by some percentage of the length of the article 12 (or a particular distance), it is not necessary that the label 10 (in its various embodiments) specifically adhere to a particular percentage (or distance) as recited above. Rather, the size, positioning, coverage, etc. of the label 10 with respect to the side wall of the article 12 is largely a function of article 12 geometry that is sufficient to result in a decreased breakage of articles over that seen in the prior art (e.g., sufficient enough to result in an improved result in performance in drop tests of such articles—as will be described in greater detail below).
To that end, and without being bound by any theory, it is believed that the positioning of the label 10, in this and other described aspects and embodiments, may be related to the article geometrics in reducing or preventing breakage of the article 12. As noted above, one result of certain embodiments is that a smaller label 10 can be just as effective and perhaps more effective to reduce and/or prevent breakage than a label 10 that extends the full length of the side wall of the article 12. When an article 12 (such as a bottle) is dropped, a shock-wave may be propagated at the bottom of the bottle (such as when the article 12 lands at least partially or substantially with a portion or substantially all of the bottom surface 18 of the article 12 making first contact with the surface against which it is dropped). The shock-wave is the nucleation event for the glass breakage because the pressure at the base of the article 12 exceeds the yield point for the glass. In other words, a shock wave is generated during the drop impact event, and this forces the fluid in the container to move outward and create a “pressure ring” at the bottom of the article 12. This pressure ring creates stress in the article 12 which may initiate breakage. Without being bound by any theory, it is believed that in the embodiments of the present invention described herein, the label 10 is sufficiently large and/or sufficiently positioned to prevent the shock-wave propagation and the nucleation event that initiates the breakage. Further, while certain articles that may be breakable (such as those made of glass), it is contemplated that the aspects and embodiments of the present invention have application beyond articles made of glass, and are applicable to any containers of breakable materials—for example, articles made of materials including (but not limited to) polymer materials (e.g., PET, HDPE, etc.).
In certain embodiments, the label 10 of the labeled article 12 may also include a particular material or materials. For example, in certain embodiments, the label 10 may include a machine direction-oriented film. In further embodiments, the label 10 may include a single ply machine direction-oriented polyolefin pressure sensitive label. Further still, in certain embodiments, the label 10 may include a blend of polyethylene and polypropylene. And, in certain embodiments, the label 10 may be greater than 50% polypropylene.
In another embodiment, the label 10 may be a shrink sleeve label having a film comprising polyvinyl chloride.
In addition to the positioning of the label 10 and/or the type of material used in the label 10 (discussed above), another aspect of the present invention may include the manner in which the label 10 is associated with an article 12. For example, in the illustrated embodiment of
Further, in certain embodiments, the label 10 may be heat shrunk to confront and conform to the article 12. To that end, in general, various aspects of the present invention also allow for applying labels, which may include pressure sensitive labels, to articles by moving the article 12 into proximity with a source of a pressure sensitive label 10, positioning a pressure sensitive label 10 relative to each article 12, and heating the pressure sensitive label 10 to shrink it against the article 12. In one embodiment, the pressure sensitive labels 10 are heat-shrunk on the articles 12 using high heat along a conveyor belt 42, upon which the articles and associated pressure sensitive labels are moved. Thus, various embodiments may include a heated conveyor 42, such that the pressure sensitive labels 10 are shrunk to conform to the contour of the articles due to heat radiating from the conveyor 42 to the labels and articles. Alternatively, other methods of applying heat (such as via the blowing of hot air onto the pressure sensitive labels and articles) may be used.
Referring now to
The conveyor 42 also includes a heating device 44, which provides heat of a temperature sufficient to cause the pressure sensitive labels 10 to substantially conform to the contour of the articles with which they are associated. In the illustrated embodiment, this heating device 44 is provided along the sides 46 of the conveyor 42. The heating device 44 may be any device sufficient to cause the pressure sensitive labels to shrink against the articles. Thus, the heating device on the conveyor 42 may be one which radiates heat from a heating element. Alternatively, it may be a device that blows hot air onto the articles as they pass by the heating device 44. Still alternatively, the heat for shrinking may be provided by steam. Further, heat may be provided by a hot air manifold. Also, heat may be applied by a combination of these methods, for example, steam heat coupled with air movement. A constant heat may be applied to the pressure sensitive label 10 and article 12. Alternatively, the pressure sensitive label 10 and article 12 may experience gradations of temperature as they move along the conveyor 42. In one embodiment, heat may be applied to the label 10 and article 12 at a temperature at or above about 140° F. In other embodiments, depending on the amount of shrink needed, the temperature may be in a range between about 140° F. and about 266° F. The desired temperature along the conveyor 42 may depend upon a number of factors, such as the speed at which the article 12 and label 10 are moved along the conveyor 42, and also the particular composition and thickness of the pressure sensitive label 10. Those of ordinary skill in the art will appreciate alternate ways in which this may be accomplished. The heating device 44 will extend along the conveyor 42 for a distance sufficient to ensure that the labels 10 are substantially shrunk against the contour of the articles 12.
Further, the conveyor 42 is designed such that the articles rotate as they move along the path of the conveyor 42. This allows the entire surface of the pressure sensitive labels 10 to be exposed to the heating device 44 as they move along the conveyor 42. This is used to facilitate complete shrinkage of the labels against the articles about the entire surface (e.g., circumference) of the labels.
Following shrinking, the article 12 and pressure sensitive label 10 may then be cooled by subjecting the article 12 and label 10 to ambient temperatures to allow for a gradual cooling process. Alternatively, the article 12 and pressure sensitive label 10 may undergo other cooling steps, such as subjecting the article 12 and label 10 to cool air or liquid.
Further still, the label 10 may include an adhesive applied to a surface of the label 10, such that the adhesive is positioned between the label 10 and the article 12 when the label 10 confronts the article 12. In one embodiment, the adhesive may be a pressure sensitive adhesive. In certain embodiments, the pressure sensitive adhesive may be a clear general purpose permanent acrylic pressure sensitive adhesive. An example of one such adhesive is Fasson® S692N adhesive, (commercially available from Avery Dennison of Glendale, Calif.). In other embodiments, the pressure sensitive adhesive may be a clear general purpose acrylic pressure sensitive adhesive. Examples of such adhesives include Flexcon V-81 adhesive, (commercially available from FLEXcon of Spencer, Mass.) and Flexcon V-01 adhesive, (commercially available from FLEXcon of Spencer, Mass.).
And so, in one specific embodiment of a labeled article 12 (such as that shown in
Referring now to
In the illustrated embodiment of
As described, the label 10 of the embodiment of
In addition to the positioning of the label 10 and the type of material used in the label 10 (discussed above), another aspect of the present invention may include the manner in which the label 10 is associated with an article 12. For example, in the illustrated embodiment of
Further still, as noted above, this embodiment of label 10 includes an adhesive applied to a surface of the label 10, such that the adhesive is positioned between the label 10 and the article 12 when the label 10 confronts the article 12. In one embodiment, the adhesive may be a pressure sensitive adhesive.
Referring now to
In the illustrated embodiment of
Further, in this embodiment, the label 10 extends from the bottom end 16 of the article 12 toward the top end 14 of the article 12 less than 50% of the length of the article 12 between the bottom end 16 to the top end 14. To that end, as can be seen in the illustrated embodiment, the label 10 extends upward from the junction 38 of the side wall and the bottom surface 18 toward the top end 14 of the article 12. However, the label 10 does not extend fully toward the top end 14 of the article 12, such that the substantial portion of the side surface 20 is confronted by the label 10. Rather, largely a segment of the lower portion of the article 12 is confronted by the label 10. In another embodiment, the label 10 may extend from the bottom end 16 of the article 12 toward the top end 14 of the article 12 less than 20% of the length of the article 12 between the bottom end 16 to the top end 14. And in yet another embodiment, the label 10 may extend from the bottom end 16 of the article 12 toward the top end 14 of the article 12 less than 12% of the length of the article 12 between the bottom end 16 to the top end 14. In yet another embodiment, the label 10 may extend between ½″ to 1″ from the bottom end 16 of the article 12 toward the top end 14 of the article 12.
While the coverage of the lower portion of the article 12 with respect to the label 10 is described above with respect to extension of the label 10 toward the top end 14 of the article 12 by some percentage of the length of the article 12 (or a particular distance), it is not necessary that the label 10 (in its various embodiments) specifically adhere to a particular percentage (or distance) as recited above. Rather, the size, positioning, coverage, etc. of the label 10 with respect to the side wall of the article 12 is largely a function of article 12 geometry that is sufficient to result in a decreased breakage of articles over that seen in the prior art (e.g., sufficient enough to result in an improved result in performance in drop tests of such articles—as will be described in greater detail below).
In certain embodiments, the label 10 of the labeled article 12 may also include a particular material or materials. For example, in certain embodiments, the label 10 may include a machine direction-oriented film. In further embodiments, the label 10 may include a single ply machine direction-oriented polyolefin pressure sensitive label 10. Further still, in certain embodiments, the label 10 may include a blend of polyethylene and polypropylene. And, in certain embodiments, the label 10 may be greater than 50% polypropylene.
In addition to the positioning of the label 10 and/or the type of material used in the label 10 (discussed above), another aspect of the present invention may include the manner in which the label 10 is associated with an article 12. For example, in the illustrated embodiment of
Further, in certain embodiments, the label 10 may be heat shrunk to confront and conform to the article 12. To that end, in general, various aspects of the present invention also allow for applying labels, which may include pressure sensitive labels, to articles by moving the article 12 into proximity with a source of a pressure sensitive label 10, positioning a pressure sensitive label 10 relative to each article 12, and heating the pressure sensitive label 10 to shrink it against the article 12. In one embodiment, the pressure sensitive labels are heat-shrunk on the articles using high heat along a conveyor belt, upon which the articles and associated pressure sensitive labels are moved. Thus, various embodiments may include a heated conveyor 42, such that the pressure sensitive labels are shrunk to conform to the contour of the articles due to heat radiating from the conveyor 42 to the labels and articles. Alternatively, other methods of applying heat (such as via the blowing of hot air onto the pressure sensitive labels and articles) may be used.
Referring now to
The conveyor 42 also includes a heating device 44, which provides heat of a temperature sufficient to cause the pressure sensitive labels 10 to substantially conform to the contour of the articles with which they are associated. In the illustrated embodiment, this heating device 44 is provided along the sides 46 of the conveyor 42. The heating device 44 may be any device sufficient to cause the pressure sensitive labels 10 to shrink against the articles 12. Thus, the heating deice on the conveyor 42 may be one which radiates heat from a heating element. Alternatively, it may be a device that blows hot air onto the articles as they pass by the heating device 44. Still alternatively, the heat for shrinking may be provided by steam. Further, heat may be provided by a hot air manifold. Also, heat may be applied by a combination of these methods, for example, steam heat coupled with air movement. A constant heat may be applied to the pressure sensitive label 10 and article 12. Alternatively, the pressure sensitive label 10 and article 12 may experience gradations of temperature as they move along the conveyor 42. In one embodiment, heat may be applied to the label 10 and article 12 at a temperature at or above about 140° F. In other embodiments, depending on the amount of shrink needed, the temperature may be in a range between about 140° F. and about 266° F. The desired temperature along the conveyor 42 may depend upon a number of factors, such as the speed at which the article 12 and label 10 are moved along the conveyor 42, and also the particular composition and thickness of the pressure sensitive label 10. Those of ordinary skill in the art will appreciate alternate ways in which this may be accomplished. The heating device 44 will extend along the conveyor 42 for a distance sufficient to ensure that the labels are substantially shrunk against the contour of the articles.
Further, the conveyor 42 is designed such that the articles rotate as they move along the path of the conveyor 42. This allows the entire surface of the pressure sensitive labels 10 to be exposed to the heating device 44 as they move along the conveyor 42. This is used to facilitate complete shrinkage of the labels 10 against the articles 12 about the entire surface (e.g., circumference) of the labels.
Following shrinking, the article 12 and pressure sensitive label 10 may then be cooled by subjecting the article 12 and label 10 to ambient temperatures to allow for a gradual cooling process. Alternatively, the article 12 and pressure sensitive label 10 may undergo other cooling steps, such as subjecting the article 12 and label 10 to cool air or liquid.
Further still, the label 10 may include an adhesive applied to a surface of the label 10, such that the adhesive is positioned between the label 10 and the article 12 when the label 10 confronts the article 12. In one embodiment, the adhesive may be a pressure sensitive adhesive.
Referring now to
In the illustrated embodiment (of
As described, the label 10 of the embodiment of
In addition to the positioning of the label 10 and the type of material used in the label 10 (discussed above), another aspect of the present invention may include the manner in which the label 10 is associated with an article 12. For example, in the illustrated embodiment of
Further still, as noted above, this embodiment of label 10 includes an adhesive applied to a surface of the label 10, such that the adhesive is positioned between the label 10 and the article 12 when the label 10 confronts the article 12. In one embodiment, the adhesive may be a pressure sensitive adhesive.
By providing a label 10, such as that described in the exemplary embodiments herein, a label 10 and labeled article 12 is provided that reduces or eliminates many or all of the drawbacks of present labels described in the Background. For example, labels and labeled articles according to the aspects of the present invention (e.g., those shown in at least some of the embodiments herein) may be provided at lower cost than current labels, Additionally, the labels provide minimal coverage of the article 12 in certain embodiments. Further, the small size of certain embodiments of the label significantly reduces the safety concern identified with current labels.
Further, as described above, the present invention may be applicable to any article 12 that can suffer damage (such as upon an impact upon being dropped). Thus, the present invention is useful for application to articles made of glass, for example, such as glass containers for soda, beer, wine, champagne, condiments, and candles. However, those of ordinary skill in the art will recognize that the present invention would benefit other container types (non-glass), such as HDPE, PET, PP, etc.
The various aspects of the present invention will be described in greater detail with respect to the following Examples.
As described above, articles that are made from materials that can be damaged and/or break present certain drawbacks. For example, consumers may be dissatisfied by glass breakage associated with dropped bottles. In particular, the consumer perception of package quality can be diminished when confronted with articles (such as glass bottles) that are broken, such as during transit to the retail environment—or if bottles are broken due to being dropped after purchase. The various aspects of the present invention reduce or eliminate these problems by providing labels and labeled articles that reduce or prevent damage (such as breakage) of the article 12.
To demonstrate this, standard beer and wine bottles were decorated with labels that represent conventionally decorated bottles that are on the market today. These bottles represented a control group. Additional such bottles were decorated with a label up to just below the neck of the bottles (e.g., the same or similar to that shown in
Tests were then conducted with the labeled articles by dropping them from a height of approximately five feet onto concrete. The beer and wine bottles (from both the control and test groups) included bottles that were (1) filled and capped, (2) filled but not capped, and (3) filled one third with no cap.
When subjected to the drop test, all of the control bottles broke immediately upon impact. However, when the test group was subjected to the drop test, the filled bottles broke at five feet, but the bottle filled one third did not break, but simply bounced. The one-third filled bottle was then subjected to a second drop from a height of five feet onto concrete. Again, the bottle did not break.
In Example 1 (above), test group bottles were decorated with a label up to just below the neck of the bottles (e.g., the same or similar to that shown in
Additional labeled bottles were then prepared. In particular, the new test groups of bottles included a label positioned around only a lower portion 32 of the side surface of the article to confront the side surface of the article (e.g., the same or similar to that shown in
Testing (such as that described in Example 1) was again conducted with control bottles (as described in Example 1) and the two test groups described in this Example 2 (i.e., bottles having a label extending ½″ up the side surface of the bottle from the bottom end of the bottle, and bottles having a label extending 1″ up the side surface of the bottle from the bottom end of the bottle). Like the results of Example 1, the control bottles shattered on the first drop. However, one out of two bottles having a ½″ label survived the drop without damage. And two bottles having a 1″ label survived the drop without damage.
Based on the information obtained by the experiments described in Examples 1 and 2 (above), further studies were performed in order to understand the relationship of the particular label substrate used to the drop test performance of the labeled bottles.
All testing described in this Example 3 was conducted with filled and capped bottles.
Samples of bottles decorated with a variety of films were evaluated (See
When testing, the standard test method states that any rupture visible to an observer with the unaided eye and normal eyesight is considered a failure; this includes also any evidence of contained liquid on the outside of the container through any aperture other than the molded opening. In the embodiments of the present invention, any damage to a glass bottle greater than a minor chip of glass being removed was considered a failure.
The drop impact resistance is determined by dropping conditioned containers filled with a liquid (water) from a platform onto a prescribed surface. When using the Bruceton Staircase Method, the procedure consists of dropping at least 20 test containers from varying heights above and below the mean failure height of the set. A mean failure height and standard deviation are then calculated from the data. In the embodiments of the present invention 15-30 trial were completed, such that the standard deviation was narrow. The average is then the peak of the distribution curve (i.e., the point at which 50% of all bottles dropped at that height would break).
The drop test apparatus 48 (such as that shown in
Once the test data has been obtained for the drops of multiple test bottles, the mean failure height from the test data obtained can be calculated as follows:
h=h
0
+d[(A/N)±½]
Σi=0i-k inI
In particular embodiments that were tested via this method, the testing began with a bottle from the control group (as described above in Example 1—a standard beer bottle with a standard pressure sensitive label applied thereto).
As can be seen from
The overall best performer includes a single ply MDO Polyolefin pressure sensitive label that was wrapped 370° around the bottom 1″ of the bottles and shrunk with heat to conform to the bottle.
The prior art label tested, by contrast, is not bonded to the bottle, but rather shrunk to fit it tightly. As a result, the prior art label does not fully protect the bottle from breaking when dropped. Because the bottle is completely encapsulated in the shrink sleeve, it is possible that the bottle has broken but is being held together with the sleeve. This can result in a safety concern.
The embodiments of the present invention recited herein are intended to be merely exemplary and those skilled in the art will be able to make numerous variations and modifications to it without departing from the spirit of the present invention. Notwithstanding the above, certain variations and modifications, while producing less than optimal results, may still produce satisfactory results. All such variations and modifications are intended to be within the scope of the present invention as defined by the claims appended hereto.
