RESEALABLE PACKAGES
A resealable package is disclosed comprising a cover component, a tray component complemented in structure and coupled to the cover component, and sealing sheet disposed between the cover and tray components. The tray component includes a compartment to receive packaged goods and a flange framing the tray component. The sealing sheet includes a first portion being resealably attached to the flange of the tray component and a second portion being affixed to the cover component. The cover and tray components are movable relative to one another such that the movement automates unsealing and resealing of the resealable connection between the sealing sheet and the flange of the tray component.
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This non-provisional application relies on the filing date of provisional U.S. Application Ser. Nos. 61/175,533 filed on May 5, 2009 and 61/226,441 filed on Jul. 17, 2009, having been filed within twelve (12) months thereof, which are incorporated herein by reference, and priority thereto is claimed under 35 USC §1.19(e).
BACKGROUND OF THE DISCLOSUREPackaging container typically includes a packaging tray to receive the packaged product and a lid film sealed to the packaging tray. To gain access to the packaged goods, the sealable lid film is torn or ripped. If the lid film is broken by consumers, it cannot be used again as a useful seal to any goods remaining in the package. The packaged product is commonly not immediately consumed after opening, such as when only a portion of the goods would be used at a time. Thus, it is beneficial for the packaging container to be resealable after opening.
U.S. Patent Application No. 2007/0023435 discloses a container for food product including a film affixed to a food tray. The film functions as a lid of the container and has an access opening. The sealing label, adhesively sealed to the top around the opening, is resealable when a tab of the sealing label is pulled back. The sealing label is resealable against the top layer to seal the opening when the label is moved back against the top. When the packaged product is perishable or delicate goods, it is further desirable that the resealable packaging container provides good barrier resistance.
U.S. Pat. No. 6,691,886 discloses a resealable plastic packaging container consisting of a tray and a lid film, wherein the container has a sealing area sealed to the tray such that it can be at least partly peeled back. The plastic packaging container comprises at least one hook and loop closure whose two complementary parts are arranged opposite each other on the tray and the lid film, respectively, and by means of which the plastic packaging container can be resealed after the peel-back seal has been opened. If the sealing lid film of the resealable package is not replaced properly to fully cover the product, the packaged goods may be damaged. Furthermore, the resealing adhesive on the lid film may become deteriorated and ineffective when contacting dirt, dust and other contaminants after the container has been opened. Finally, the sealing lid film is easily punctured or torn prematurely.
Accordingly, there is a need for resealable packages with enhanced resealing and barrier performances. In addition, there is a need for resealable or re-closable packages with enhanced convenience, easier opening and improved user experience.
SUMMARY OF THE DISCLOSUREThe present disclosure relates to a resealable package comprising a cover component, a tray component complemented in structure and coupled to the cover component, and sealing sheet disposed between the cover and tray components. The tray component includes a compartment to receive packaged goods and a flange framing the tray component. The sealing sheet includes a portion being resealably attached to the flange of the tray component and a portion being affixed to the cover component. The cover and tray components are movable relative to one another such that the movement automates unsealing and resealing of the resealable connection between the sealing sheet and the flange of the tray component.
The present disclosures now will be described more fully hereinafter, but not all embodiments of the disclosure are shown. Indeed, these disclosures may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
The resealable package of the present disclosure comprises:
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- (A) a cover component;
- (B) a tray component complemented in structure and coupled to the cover component, the tray component being moveable relative to the cover component and including:
- (i) a compartment portion to receive one or more articles,
- (ii) a flange portion framing the compartment portion; and
- (C) a sealing sheet including:
- (a) a first portion resealably connecting to the flange portion of the tray component and
- (b) a second portion connecting to the cover component, wherein the sealing sheet being disposed between the cover and tray components such that a relative movement between the cover and tray components automates unsealing and resealing of the resealable connection between the sealing sheet and the flange portion of the tray component.
Any known packaging materials may be used for the cover component. Examples include, but are not limited to, paper-based material such as paper and paperboard; plastic; metallic material; and combinations thereof. The cover component may be in a variety of forms. Examples include, but are not limited to, a slidable cover, a liftable cover, a fully enclosed cover, and a tubular sleeve cover with opening at one or both ends.
Various materials may be used to produce the tray component. Examples of such materials include, but are not limited to, injected-mold plastic, thermoform plastic, plastic-coated paperboard, paperboard, and combinations thereof. The material used for the tray component may be the same or different from that used for the cover component. It will be understood that the tray component may comprise more than one compartment. Additionally, one skilled in the art may simply modify the compartment structure and shape to facilitate the desired end use applications of the disclosed packages.
A variety of materials are suitable as the sealing sheet. Such material may be selected based on the end use applications of the disclosed package. For example, if the packaged goods are perishable food items, the sealing sheet material may be selected to minimize or reduce the permeability of air and other gases, water and other liquids, as well as dust and other solids. Examples of materials suitable for use as the sealing sheet include, but are not limited to, plastic film such as polyethylene, polyester, foil and other metallic material; and any combination thereof. When desired, the sealing sheet may have barrier resistant properties. When appropriate, the sealing sheet may be further provided with an antimicrobial treatment. The sealing sheet may be flexible such that it may be peeled away from and replaced back on the flange portion of the tray component.
The first portion of the sealing sheet may be resealably attached to the flange portion of the tray component by the use of resealable adhesive or other means. The adhesion of the sealing sheet to the cover component may be stronger than the adhesion to the flange portion of the tray component.
The disclosed package may include a stopping element to limit the relative movement between the cover component and the tray component and prevent the completely decoupling of the two components. Such stopping mechanisms are well known in the art, and any suitable stopping element may be used in the present disclosure. When appropriate, the mechanical stopping element may be used for such mechanism. Examples of suitable mechanical stopping elements include, but are not limited to, a sleeve lip, tail tab, flap design, side tab design, overlapping tabs, aligned tabs and slots, closed ends on the cover component, and combinations thereof. Optionally, the mechanical stopping element may comprise a tab extending inwardly from the main panel proximate to a leading portion of the cover component and an aperture disposed in the tray component proximate to a trailing edge of the tray component. The tray component may comprise an end closure structure for closing an end of the disclosed package.
In one embodiment of the disclosed package, the cover component and the tray component comprise a co-operable ratchet mechanism for effective step-wise relative movement between the two components.
The tray component 34 includes a compartment portion 48 framed by a side 42 wall and an end wall 44 to receive packaged goods and a flange portion 46 connecting the compartment portion 48.
The sealing sheet 36 has a first portion 40 that is resealably affixed to the flange portion 46 of the tray component 34, and a second portion 38 affixing to the cover component 30. As shown in
As illustrated in
As shown in
The first affixing portion 40 of the sealing sheet 36 may be attached to the tray 34 by means of a resealable adhesive. Any known resealable adhesives in the art may be used. For example, “Peel 'n Re-seal” adhesive available from Spear Inc. may be used. Therefore, the sealing sheet 36 may be readhered to the tray component 34, resulting in a resealing and closing of the compartment portion 48 of the tray component 34 once again. As such, only some the packaged goods in the compartment portion 48 of the tray 34 may be removed, while the remaining goods are still being kept fresh. Examples of such packaged goods include, but are not limited to, loose tobacco or food.
Additionally, the reinsertion of the tray component 34 within the cover component 30 automatically causes the portion 40 of the sealing sheet 36 to be resealed to the flange portion 46 of the tray component 34. The tray component 34 may be designed to tightly fit within the cover component 30, such that the seal between the portion 40 of the sealing sheet 36 and the flange portion 46 of the tray component 34 is formed once the top panel 18 contacts with the sealing sheet 36. When desired, the resealable adhesive provided on the first affixing portion 40 may be activated to reseal by an application of pressure between the affixing portion 40 and the flanged portion 46 of the tray component 34. In certain embodiment of the present disclosure, it is not necessary for the consumers to apply pressure because the sandwiching of the first affixing portion 40 between the top panel 18 of the cover component 30 and the flange portion 40 as the tray component 34 is reinserted into the cover component 30 provides sufficient pressure to reseal the compartment portion 48. The space between the top panel 18 of the cover component 30 and the flanged portion 46 of the tray component 34 may be sized to receive only the thickness of the sealing sheet 36, since this promotes replacement of the sealing sheet 36 in flat form and wrinkling or creasing of the sealing sheet 36 may be prevented. The tightness of the space between the top panel 18 and the flanged portion 46 may also ensure that the sealing sheet 36 is aligned correctly along the flange portion 40 of the tray component 34.
The package of the present disclosure may allow for an automatic resealing of the compartment portion 48. This reduces the possibility of contaminants being transferred from the users to the resealable adhesive on the first affixing portion 40 of the sealing sheet 36, thus increasing the lifetime of the resealing adhesive and the disclosed resealable package.
A completely decoupling of the tray component 34 from the cover component 30 may be prevented through the use of stopping elements such as any mechanical stopping element known in the art. Alternatively, the trailing edge of the sealing sheet 36 that is closest to the end panel 12 of the cover component 30 in the closed position, may be strongly attached or permanently affixed to the tray component 34, so that a complete detachment of the sealing sheet 36 from the tray component 34 is avoided and consequently a decoupling of the cover component 30 and the tray 34 component is prevented.
In one embodiment of the present disclosure, the package includes a first component being a pouch compartment and a second component being a tubular carton structure and coupled to the first component. The tubular carton structure includes a lid connected and hinged to a top panel of the carton structure such that when the lid is pulled to an open position, the relative movement between the pouch compartment and carton structure automates an unsealing of the bond between the sealing sheet and the flange portion of the compartment.
In one embodiment, the disclosed package comprises a tray component that includes a flange portion and a compartment portion, a slidable cover component being coupled to the tray component by means of a folded portion engaging an underside of the flange, and a sealing sheet being sandwiched between the flange portion of the tray component and the slidable cover component. In
In one embodiment of the disclosed package, the sealing sheet may be sealed to the outer edge of the flange portion of the tray component. Further, the resealable adhesive and removable portion of the sealing sheet may be located inside the perimeter of the sealed area. In the alternative a heat sealable film and a resealable film may be precombined and then applied to tray component 834. The heat sealable film may extend to the end of the flange portion 884.
The Z fold piece 905 may be paperboard. The board may be treated. To get the folds between pieces 906, 907 and 908 the sections may be scored. The may be all one piece with a paperboard inner tray 903 molded or folded and the Z fold attached on one end to be folded into shape. In such a design, there may be a perforated edge between the Z fold end piece 908 and the end of the inner tray 903 such that the connection may break upon folding or upon the user first opening the package. In addition as shown in
In the alternative, the Z fold piece may be a plastic material adhered to the sealable film or may be a piece folded off of the film cover. The film cover may be a film, paperboard or plastic combination to give the Z fold the strength needed to maintain its shape and lift the sealable film. In addition the Z fold may be formed with the tray and folded into place over the sealable film. In such a design, the Z fold may have a perforated edge allowing it to break off from the inner tray when folded into position. Upon folding, the lower part of the Z fold 908 may be adhered to the sealable film 902. The top of the inner tray 912 may have a flange surrounding the inner compartment for holding the product.
It will be understood that the present disclosure is applicable to the packaging, storing and dispensing of various items or products. Accordingly, the terms “goods”, “contents”, “articles”, “item” and “product” as used herein includes all kinds of packagable objects. Examples of such objects may include, but are not limited to, medicaments; food; electrical items; perishable goods of any sort such as tobacco; media products; and other personal or healthcare items such as contact lenses. It is envisaged that the present disclosure may be applied to provide an automatic seal for a jar-type container to preserve active ingredients in cream, lotion or ointment from deteriorating.
One skilled in the art will appreciate that various changes may be made within the scope of the present disclosure. For example, the size and shape of the tray component, the cover component and the compartment portion may be adjusted to accommodate articles of differing size or shape. Additionally, the word “seal” may mean a vacuum/hermetic seal or a mere sufficient seal to preserve the quality and limit the degradation of the packaged products.
Furthermore, it is envisaged that the application of the automated unsealing and resealing mechanism of the present disclosure may be applied to a number of package configurations, including the one-hand opening cartons that are known in the art and provide a simple-to-use package. The disclosed resealing mechanism may also be incorporated into the automated opening containers including those with child resistant features.
Moreover, the disclosed automatic resealing mechanism may be applied to a carton housing an inhaler or other medical device where a specific portion of the device or a nose or a mouth portion of an inhaler is covered by the sealing sheet. As such the flange edge to which the sealing sheet is attached and reattached may not surround the entire cavity of a carton, but rather may surround a section of the cavity. In any such application, the sealing sheet may also comprise an antimicrobial treatment.
It is to be understood that on any embodiment disclosed herein, manufacturing preferences may indicate whether a single layer of film or multiple layers of film, two or more, may be preferred. With one or more layers it may be appropriate to have a perforated or cut out portion of the film that acts as the sealable portion. The one film layer may be a material that is both heat sealable and resealable after the initial peel back from the flange area. The multi layer film solution may include at least one heat sealable film and at least one resealable film that would then be adhered in combination to the tray structure. It is also to be understood, that the one or more films may have barrier properties or may simply close the opening. Any film layers in the industry or later developed may be adapted to work with this application. In general the films tend to have a base film that may be metalized or may be polypropylene or another type of plastic that may or may not have a metalized coating with heat seal and resealable adhesive layers extruded onto the film. In the alternative, the film could be combined with paperboard that may or may not be treated. The one layer option may be a film that is resealable to the flange area without being initially heat sealed. The heat seal requirement is dependent upon the needs of the product in the package. The heat sealing may provide increased initial barrier protection. The films will vary as different products will require different barriers needs. In a one layer solution the film may be fully rolled away from the flange area when the package has been opened. In the two layer solution the film would most likely be a combination of precombined materials which may include a heat sealable film and a resealable film that would then be adhered to the tray structure in combination. The resealable film would overlap a section of the heat sealed film that would be lifted when the resealable film is rolled away as the package is opened. The action of the top layer lifting a portion of the bottom layer allows access to the compartment containing the product when the package has been opened. The base layer which may be the heat sealed film will have a lock seal to the tray flange, which may improve barrier and the lock seal may prevent the heat seal layer from being lifted from the tray. In some embodiments, the resealable layer may reseal on the heat sealed layer. It is to be understood, that the material that the resealable film attaches to will determine the appropriate adhesive material to use.
The adhesive used for the applications herein may be glue, tape, heat sealing, adhesive strips, adhesive dots, combinations thereof and any other suitable adhesive materials. It is to be understood that manufacturing preferences will indicate the appropriate adhesive to use for various applications of the package. For example stronger adhesive materials should be used to connect the sealable sheet to the outer package, lid or the Z fold and weaker adhesive should be used on the sealable portion such that a user is able to open the package when the tray is slid or rotated or moved away from the lid portion without disconnecting the attachment to the lid, outer package or Z fold.
It will be recognized that as used herein, directional references such as “top”, “bottom”, “front”, “back”, “end”, “side”, “inner”, “outer”, “upper” and “lower” do not limit the respective panels to such orientation, but merely serve to distinguish these panels from one another. Any reference to hinged connection should not be construed as necessarily referring to a single fold line only. Rather, it is envisaged that hinged connection can be formed from one or more of the following, a short slit, a frangible line or a fold line without departing from the scope of the invention.
The foregoing description relates to embodiments are exemplary and explanatory only and are not restrictive of the disclosure. Any changes and modifications may be made therein as will be apparent to those skilled in the art. Such variations are to be considered within the scope of the disclosure as defined in the following claims.
Claims
1. A package comprising:
- (A) a cover component;
- (B) a tray component complemented in structure and coupled to the cover component, the tray component being moveable relative to the cover component and including: one or more compartment portion to receive one or more articles, a flange edge framing the compartment portion; and
- (C) a sealing sheet including: a first portion resealably connecting to the flange edge of the tray component, and a second portion connecting to the cover component,
- wherein the sealing sheet being disposed between the cover and tray components such that a relative movement between the cover and tray components automates unsealing and resealing of the resealable connection between the sealing sheet and the flange edge of the tray component.
2. The package of claim 1, wherein the sealing sheet includes a barrier film.
3. The package of claim 1, wherein the connection between the second portion of the sealing sheet and the cover component is stronger than the connection between the first portion of the sealing sheet and the flange edge of the tray component.
4. The package of claim 1, further comprising a mechanical stopping element to prevent a decoupling of the tray component from the cover component.
5. The package of claim 4, wherein the mechanical stopping element includes a member selected from a group consisting of sleeve lip, tail tab, flap design, side tab design, overlapping tab, aligned tab and slot, closed end on the sleeve, and combinations thereof.
6. The package of claim 1, wherein the tray component is moveable relative to the cover component in a sliding motion.
7. The package of claim 1, wherein the tray component includes more than one compartment.
8. The package of claim 1, wherein the tray component further comprises an end closure structure for closing the package.
9. The package of claim 1, wherein the cover component includes a top panel, a bottom panel, and two side walls connecting the top and the bottom panels.
10. The package of claim 9, wherein the top panel includes:
- (a) a first ply being a frame panel of the cover component, and
- (b) a second ply being an overlapping panel for the first ply,
- wherein the second portion of the sealing sheet is bonded between the first and the second plies of the cover component.
11. The package of claim 1, wherein the cover component is a slidable lid.
12. The package of claim 1, wherein the cover component and the tray component further comprise a co-operable ratchet mechanism for effective step-wise relative movement.
13. A package comprising:
- (A) a tray component including: (i) a compartment portion to receive one or more articles, and (ii) a flange edge connecting to the compartment portion;
- (B) a lid component coupling to the tray component and including a flip-top opening feature; and
- (C) a sealing sheet including: (a) a first surface being permanently affixed to the lid component, and (b) a second surface being resealably connected to the flange edge of the tray component,
- wherein a flip-opening movement of the lid component automates unsealing and resealing of the resealable connection between the second surface of the sealing sheet and the flange edge of the tray component.
14. The package of claim 13, further comprising a sleeve component being complemented in structure to the tray component such that the tray component being slidable within the sleeve compartment.
15. A package comprising:
- (A) a cover component;
- (B) a tray component complemented in structure and coupled to the cover component, the tray component being moveable relative to the cover component and including one or more compartment portion to receive one or more articles; and
- (C) a sealing sheet including: a first portion resealably connecting to the flange edge of the tray component, and a second portion connecting to the cover component,
- wherein the sealing sheet being disposed between the cover and tray components such that a relative movement between the cover and tray components automates unsealing and resealing of the resealable connection between the sealing sheet and the tray component.
Type: Application
Filed: May 4, 2010
Publication Date: Feb 23, 2012
Applicant: MEADWESTVACO CORPORATION (Richmond, VA)
Inventors: Laurel Thomas (Portland, OR), Sara Falcon (Richmond, VA), Larry L. Sipe (Clayton, NC)
Application Number: 13/318,062
International Classification: B65D 51/18 (20060101);